WO2024197961A1 - Communication method, apparatus and device, and storage medium - Google Patents

Abstract

The present disclosure relates to a communication method, apparatus and device, and a storage medium. The method comprises: determining at least two timing advances; determining an uplink time unit boundary according to the at least two timing advances; and sending uplink data on the basis of the uplink time unit boundary. A plurality of different timing advances are configured for a terminal, so that the terminal can determine an uplink time unit boundary by using an appropriate timing advance under a corresponding condition and send uplink data. Therefore, the number of symbols before and after uplink and downlink switching occupied by a network device during the uplink and downlink switching can be reduced, thereby increasing the number of available symbols, and improving the uplink transmission performance.

Description

A communication method, device, equipment and storage medium Technical Field

The present disclosure relates to the field of communication technology, and in particular to a communication method, apparatus, device and storage medium.

Background Art

In the related art, in the scenario of dynamic time division duplex (DTDD), in order to improve the corresponding uplink communication performance. In the time division duplex (TDD) configuration, the proportion of the corresponding uplink (UL) transmission time slot increases accordingly. DTDD can be called dynamic TDD, that is, the proportion of the UL transmission time slot and the downlink (DL) transmission time slot in the TDD configuration can be dynamically adjusted. Assuming that the serving cell and the neighboring cell have made different dynamic adjustments to the TDD structures of their respective cells, the TDD structures of their respective cells will be inconsistent, such as the transmission directions of the two cells are inconsistent, which will cause serious interference.

In order to measure the interference between multiple network devices in two adjacent cells, the corresponding interference can be measured by sending reference signals by the network devices. Since the reference signal only occupies a part of the frequency domain resources, in order to improve resource utilization efficiency, the network device can receive uplink data sent by the terminal in the same service cell and the reference signal sent by the network device in the adjacent cell at the same time. For the network device in the service cell, the reference signal and the uplink data will be received at the same time, causing serious inter-symbol interference (ISI).

Summary of the invention

In order to overcome the problems existing in the related art, the present disclosure provides a communication method, an apparatus, a device and a storage medium.

According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is executed by a terminal and includes: determining at least two time advances; determining an uplink time unit boundary based on the at least two time advances; and sending uplink data based on the uplink time unit boundary.

In some implementations, at least two timing advances are determined in at least one of the following ways: receiving first configuration information, and determining at least two timing advances based on the first configuration information; and determining at least two timing advances based on a first predefined rule.

In some embodiments, at least two time advances include: a first time advance; the method also includes: determining a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; determining the uplink time unit boundary based on the at least two time advances, including: within the first time window, determining the uplink time unit boundary based on the first time advance.

In some embodiments, at least two timing advances include: a second timing advance; the method further includes: determining Determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; determine an uplink time unit boundary according to at least two time advances, including: within the second time window, determine the uplink time unit boundary based on the second time advance.

In some embodiments, the first time window and/or the second time window is determined by at least one of the following methods: receiving second configuration information, and determining the first time window and/or the second time window based on the second configuration information; determining the first time window and/or the second time window based on a second predefined rule.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, the terminal does not expect to send an uplink channel and/or an uplink signal.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, the terminal does not expect to receive a downlink channel and/or a downlink signal.

In some implementations, the first timing advance is less than or equal to zero.

In some implementations, the second timing advance is greater than or equal to zero.

According to a second aspect of an embodiment of the present disclosure, a communication method is provided, which is executed by a network device and includes: determining at least two time advances; determining an uplink time unit boundary based on the at least two time advances; and receiving uplink data based on the uplink time unit boundary.

In some embodiments, determining at least two timing advances includes: determining first configuration information, the first configuration information is used to indicate at least two timing advances; sending the first configuration information; and/or, determining at least two timing advances based on a first predefined rule.

In some embodiments, at least two time advances include: a first time advance; the method also includes: determining a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; determining the uplink time unit boundary based on the at least two time advances, including: within the first time window, determining the uplink time unit boundary based on the first time advance.

In some embodiments, at least two time advances include: a second time advance; the method also includes: determining a second time window, wherein the second time window does not overlap with the first time window in the time domain; determining the uplink time unit boundary based on the at least two time advances, including: within the second time window, determining the uplink time unit boundary based on the second time advance.

In some embodiments, the first time window and/or the second time window is determined by: determining second configuration information, the second configuration information is used to indicate the first time window and/or the second time window; sending the second configuration information; and/or,

Based on the second predefined rule, the first time window and/or the second time window is determined.

In some implementations, an uplink channel and/or an uplink signal from the terminal is not received at a first time unit after the first time window and/or at a last time unit within the first time window.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, no downlink channel and/or downlink signal is sent to the terminal.

In some implementations, the first timing advance is less than or equal to zero.

In some implementations, the second timing advance is greater than or equal to zero.

According to the third aspect of an embodiment of the present disclosure, a communication device is provided, which may include: a processing module for determining at least two time advances; the processing module is also used to determine an uplink time unit boundary based on the at least two time advances; and a sending module for sending uplink data based on the uplink time unit boundary.

In some embodiments, the device further includes: a receiving module for receiving first configuration information; the processing module is also used to determine at least two time advances based on the first configuration information; the processing module is also used to determine at least two time advances based on a first predefined rule.

In some embodiments, at least two time advances include: a first time advance; the processing module is also used to: determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; within the first time window, determine the uplink time unit boundary based on the first time advance.

In some embodiments, at least two time advances include: a second time advance; the processing module is also used to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; within the second time window, determine the uplink time unit boundary based on the second time advance.

In some embodiments, the device also includes: a receiving module for receiving second configuration information; the processing module is also used to determine the first time window and/or the second time window based on the second configuration information; the processing module is also used to determine the first time window and/or the second time window based on a second predefined rule.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, the terminal does not expect to send an uplink channel and/or an uplink signal.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, the terminal does not expect to receive a downlink channel and/or a downlink signal.

In some implementations, the first timing advance is less than or equal to zero.

In some implementations, the second timing advance is greater than or equal to zero.

According to the fourth aspect of an embodiment of the present disclosure, a communication device is provided, comprising: a processing module for determining at least two time advances; the processing module is also used to determine an uplink time unit boundary based on the at least two time advances; and a receiving module for receiving uplink data based on the uplink time unit boundary.

In some embodiments, the apparatus further includes: the processing module is further used to determine first configuration information, the first configuration information is used to indicate at least two timing advances; the sending module is further used to send the first configuration information; and/or the processing module The method is further configured to determine, based on a first predefined rule, at least two timing advances.

In some embodiments, at least two time advances include: a first time advance; the processing module is also used to: determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; within the first time window, determine the uplink time unit boundary based on the first time advance.

In some embodiments, at least two time advances include: a second time advance; the processing module is also used to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; within the second time window, determine the uplink time unit boundary based on the second time advance.

In some embodiments, the device also includes: a processing module is also used to determine second configuration information, the second configuration information is used to indicate the first time window and/or the second time window; a sending module is used to send the second configuration information; and/or the processing module is also used to determine the first time window and/or the second time window based on a second predefined rule.

In some implementations, an uplink channel and/or an uplink signal from the terminal is not received at a first time unit after the first time window and/or at a last time unit within the first time window.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, no downlink channel and/or downlink signal is sent to the terminal.

In some implementations, the first timing advance is less than or equal to zero.

In some implementations, the second timing advance is greater than or equal to zero.

According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to: execute the first aspect and any one of the methods in the first aspect.

According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to: execute the second aspect and any one of the methods in the second aspect.

According to the seventh aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided. When instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the first aspect and any one of the methods in the first aspect.

According to an eighth aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided. When instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute the second aspect and any one of the methods in the second aspect.

The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects: by configuring a plurality of different timing advances for a terminal, the terminal can use an appropriate timing advance to determine the uplink time unit edge in a corresponding situation. The uplink data is sent after the uplink and downlink switching. This can reduce the number of symbols occupied by the network equipment before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.

Fig. 2 is a schematic diagram showing an interference scenario according to an exemplary embodiment.

Fig. 3 is a schematic diagram showing an ISI interference according to an exemplary embodiment.

Fig. 4 is a schematic diagram showing a timing sequence of transmission symbols according to an exemplary embodiment.

Fig. 5 is a flow chart of a communication method according to an exemplary embodiment.

Fig. 6 is a schematic diagram of uplink symbols using a first timing advance according to an exemplary embodiment.

Fig. 7 is a schematic diagram of uplink symbols using a second timing advance according to an exemplary embodiment.

Fig. 8 is a flow chart showing another communication method according to an exemplary embodiment.

Fig. 9 is a flow chart showing yet another communication method according to an exemplary embodiment.

Fig. 10 is a flow chart of yet another communication method according to an exemplary embodiment.

Fig. 11 is a flow chart showing another communication method according to an exemplary embodiment.

Fig. 12 is a flow chart of yet another communication method according to an exemplary embodiment.

Fig. 13 is a schematic diagram showing another timing of transmission symbols according to an exemplary embodiment.

Fig. 14 is a schematic diagram showing yet another transmission symbol timing according to an exemplary embodiment.

Fig. 15 is a schematic diagram of a communication device according to an exemplary embodiment.

Fig. 16 is a schematic diagram of another communication device according to an exemplary embodiment.

Fig. 17 is a schematic diagram of a communication device according to an exemplary embodiment.

Fig. 18 is a schematic diagram of another communication device according to an exemplary embodiment.

DETAILED DESCRIPTION

Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

The communication method involved in the present disclosure can be applied to the wireless communication system 100 shown in Figure 1. The network system may include a network device 110 and a terminal 120. It can be understood that the wireless communication system shown in Figure 1 is only for schematic illustration, and the wireless communication system may also include other network devices, for example, core network devices, wireless relay devices, and wireless backhaul devices, which are not shown in Figure 1. The embodiment of the present disclosure does not limit the number of network devices and the number of terminals included in the wireless communication system.

It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division multiple access (time division multiple access, TDMA), frequency division multiple access (frequency division multiple access, FDMA), orthogonal frequency division multiple access (orthogonal frequency-division multiple access, OFDMA), single carrier frequency division multiple access (single carrier-frequency division multiple access, SC-FDMA), carrier sense multiple access/collision avoidance (carrier sense multiple access with collision avoidance). According to the capacity, rate, delay and other factors of different networks, networks can be divided into 2G (English: generation) networks, 3G networks, 4G networks or future evolution networks, such as the 5th generation wireless communication system (5G) network. 5G network can also be called new radio (NR). For the convenience of description, the present disclosure sometimes refers to wireless communication networks as networks.

Furthermore, the network device 110 involved in the present disclosure may also be referred to as a wireless access network device. The wireless access network device may be: a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a TRP, etc. It may also be a gNB in an NR system, or it may also be a component or a part of a device constituting a base station, etc. When it is a vehicle-to-everything (V2X) communication system, the network device may also be a vehicle-mounted device. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.

Furthermore, the terminal 120 involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and/or data connectivity to users. For example, the terminal may be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: smart phones (mobile phones), pocket personal computers (pocket personal computers, PPCs), handheld computers, personal digital assistants (personal digital assistants, PDAs), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

In the embodiments of the present disclosure, the network device 110 and the terminal 120 may use any feasible wireless communication technology to achieve mutual data transmission. Among them, the transmission channel corresponding to the data sent by the network device 110 to the terminal 120 is called a downlink channel (DL), and the transmission channel corresponding to the data sent by the terminal 120 to the network device 110 is called an UL. It can be understood that the network device involved in the embodiments of the present disclosure may be a base station. Of course, the network device may also be any other possible network device, and the terminal may be any possible terminal, which is not limited by the present disclosure.

In the DTDD scenario of version (Rel) 18, in order to improve the corresponding uplink communication performance, the proportion of the corresponding UL transmission time slot in the TDD configuration is increased accordingly. DTDD can be called dynamic TDD, that is, the proportion of the UL transmission time slot and the downlink (DL) transmission time slot in the TDD configuration can be dynamically adjusted. Assume that the serving cell and the neighboring cell have made different dynamic adjustments to the TDD structure of their respective cells. This will lead to inconsistent TDD structures of the respective cells, such as inconsistent transmission directions of the two cells, which will cause serious interference.

For example, in the scenario shown in FIG2, it can be seen that the service cell may include terminal 1 and network device 1. The neighboring cell adjacent to the service cell may include terminal 2 and network device 2. When the TDD structures of the service cell and the neighboring cell may be inconsistent, the service cell and the neighboring cell may perform uplink transmission and downlink transmission respectively in a certain time slot. For example, as shown in FIG2, network device 1 sends downlink data to terminal 1, and terminal 2 sends uplink data to network device 2. The two black solid arrows shown in FIG2 represent different transmission states in different cells at the same time. In this case, since terminal 2 is in the time slot for uplink transmission, the data sent by terminal 2 will also be transmitted to terminal 1. For terminal 1, it may receive the downlink data sent by network device 1 and the data sent by terminal 2 at the same time, thereby generating ISI. Among them, the dotted arrow pointing from terminal 2 to terminal 1 in FIG2 represents the interference caused by the data sent by terminal 2 to terminal 1.

In order to measure the interference between network devices and network devices in adjacent cells. In Rel-18 radio access network (RAN) 1, CLI reference signals are supported to be sent between different network devices to measure the corresponding interference conditions. For example, in some schemes, for the cross-link interference (CLI) measurement and/or channel measurement of the same channel between network devices, RAN1 at least supports periodic non-zero power channel state information reference signal (NZP CSI-RS) or synchronization signal/physical broadcast channel block (SSB) for CLI measurement and/or channel measurement between network devices. Among them, SSB can be cell defining (CD) SSB or non cell defining (NCD) SSB.

One of the scenarios is that the aggressor network device sends a corresponding reference signal (RS) based on scheduling, such as CLI RS. The serving network device receives the corresponding reference signal. The serving network device can also be called a victim network device. The victim network device is a network device in the serving cell, and the aggressor network device is a network device in the neighboring cell. The victim network device receives the CLI RS sent by the aggressor network device to perform CLI measurement. Considering that CLI RS only occupies a part of the frequency domain resources. In order to improve resource utilization efficiency, the victim network device can receive uplink data (data) sent from the terminal in the service cell at the same time. As shown in Figure 3, the time interval between the arrival of CLI RS and UL data is N _{TA, offset} T _c +T _delay . Among them, N _{TA, offset} is the cell-level timing advance (Timing Advance, TA) information configured by the victim network device, T _c is the basic time quantity, and T _delay is the propagation delay of CLI RS between the victim network device and the aggressor network device. It can be understood that T _{TA, offset} in Figure 3 is equal to N _{TA, offset} T _c .

In the TDD scenario of frequency range (FR) 1, the default value of N _{TA, offset} T _c can be 13 microseconds (μs) or 20μs, depending on whether it is in the dynamic spectrum sharing (DSS) band. In this scenario, when the time difference N _{TA, offset} T _c + T _delay exceeds the duration of the cyclic prefix (CP), if the victim network device receives CLI RS and UL data at the same time, it will cause severe ISI interference.

It can be seen that when receiving CLI RS and UL data at the same time, some CLI RS are received outside the CP duration, and cause serious ISI interference to the CLI RS and UL data received within the CP duration. How to avoid the above interference has become a problem that needs to be solved.

In some schemes, in order to reduce ISI interference, a zero N _TA,offset scheme is proposed. By configuring the cell-level TA information of the serving cell to 0, that is, N _TA,offset is configured to 0, so that the UL data and CLI RS of the serving cell can arrive within the CP duration.

However, N _{TA, offset} is mainly defined based on the uplink and downlink conversion time of the network equipment. If N _{TA, offset} is configured to 0, no time is reserved for the network equipment to perform uplink and downlink conversion. The network equipment will occupy one or more orthogonal frequency division multiplexing (OFDM) symbols before and after the uplink and downlink conversion for uplink and downlink conversion. On the corresponding occupied OFDM symbols, the base station will not be able to perform corresponding reception and processing on the data sent by the terminal in the service cell, thereby reducing the communication performance of the cell.

As shown in Figure 4, assuming that the time when the neighboring cell network device sends downlink data is used as a benchmark, and assuming that the neighboring cell network device sends a reference signal, the time for the serving cell network device to receive the reference signal needs to be T _delay . In the case of adopting the zeroN _{TA, offset} scheme, assuming that the serving cell network device occupies the last uplink symbol before the uplink-downlink conversion for uplink-downlink conversion, the network device will not be able to receive the data sent by the terminal on the uplink symbol. In other words, the network device cannot communicate normally on the uplink symbol, that is, the uplink symbol is unavailable to the network device. As shown in Figure 4, the shaded area in the second row indicates the uplink-downlink conversion, and the gray uplink symbol indicates that part of the uplink symbol is occupied for the network device to perform uplink-downlink switching. From the perspective of the terminal, in the same uplink symbol, taking into account If the network device is unavailable, the terminal may not send data. It is understandable that even if the terminal sends data on the uplink symbol occupied by the network device for uplink and downlink switching, the network device cannot receive such data. Therefore, the terminal usually does not send data on the uplink symbol when the network device is unavailable.

From another perspective, the terminal also needs to perform uplink and downlink conversion. Therefore, for the terminal, when the terminal of the serving cell adopts the zeroN _{TA, offset} solution, if the terminal occupies uplink symbols or downlink symbols for uplink and downlink switching, the terminal does not transmit data on the occupied uplink symbols or downlink symbols, that is, it is considered that the occupied uplink symbols or downlink symbols are unavailable to the terminal.

The last row in FIG4 shows that the terminal in the serving cell adopts the non-zero N _{TA, offset} solution, and the uplink and downlink switching will not occupy other uplink symbols or downlink symbols, so it does not affect the terminal's data transmission on different uplink symbols or downlink symbols.

Obviously, simply introducing the zeroN _TA,offset solution will cause a large number of symbols to be occupied for network equipment to perform uplink/downlink conversion, or downlink/uplink conversion, making these occupied symbols unable to communicate normally, thereby reducing the communication performance of the cell.

Therefore, the present disclosure provides a communication method, apparatus, device and storage medium. By configuring a plurality of different time advances for a terminal, the terminal can use an appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation. The number of symbols occupied by the network device before and after the uplink and downlink switching can be reduced, thereby increasing the number of available symbols and improving the uplink transmission performance.

FIG5 is a flow chart of a communication method according to an exemplary embodiment. As shown in FIG5 , the method may be executed by a terminal, and the method may include the following steps:

In step S11 , at least two timing advances are determined.

In some embodiments, the terminal may determine at least two timing advances. For example, different timing advances may be applicable to different conditions associated with interference measurement performed by a network device, or different timing advances may be applicable to pre-configured specified scenarios, which are not limited in the present disclosure.

For example, the terminal may determine at least two cell-level TA information. For example, there may be two N _{TA, offsets} . Different N _{TA, offsets} are applicable to different conditions. For example, different conditions may be related to interference measurement performed by a network device. Then, one N _{TA, offset} may be related to interference measurement performed by a network device, and another N _{TA, offset} may be related to not performing interference measurement performed by the network device.

For example, the terminal can directly configure at least two N _{TA, offsets} through the configuration information sent by the network device. The at least two N _{TA, offsets} configured in the configuration information can be used by the terminal in different scenarios. Assume that at least two N _{TA, offset} includes a first N _{TA, offset} and a second N _{TA, offset} . Among them, the first N _{TA, offset} can be applied to the first scenario. The terminal can use the first N _{TA, offset} as the N _{TA, offset} used in the time domain range corresponding to the first scenario, so that the terminal determines the uplink time unit boundary for sending uplink data based on the first N _{TA, offset} in the time domain range corresponding to the first scenario. Or, the terminal receives configuration information, which configures the first N _{TA, offset} , configures the first N _{TA, offset} corresponding to the first scenario, and configures the time domain range corresponding to the first scenario. That is, the configuration information indicates the first N _{TA, offset} corresponding to the first scenario, and the time domain range in which the first scenario is effective. The terminal can determine the first N _{TA, offset} used in the first scenario based on the configuration information. So that the terminal uses the first N _{TA, offset} to determine the uplink time unit boundary for sending uplink data within the time domain range corresponding to the first scenario. Similarly, the second N _{TA, offset} can be applied to the second scenario. The terminal may use the second N _{TA, offset} as the N _{TA, offset} used in the time domain range corresponding to the second scenario, so that the terminal determines the uplink time unit boundary for sending uplink data based on the second N _{TA, offset} in the time domain range corresponding to the second scenario. Alternatively, the terminal receives configuration information, which configures the second N _{TA, offset} , configures the second N _{TA, offset} corresponding to the second scenario, and configures the time domain range corresponding to the second scenario. That is, the configuration information indicates the second N _{TA, offset} corresponding to the second scenario, and the time domain range in which the second scenario is effective. The terminal may determine the second N _{TA, offset} used in the second scenario based on the configuration information. So that the terminal uses the second N _{TA, offset} to determine the uplink time unit boundary for sending uplink data within the time domain range corresponding to the second scenario.

For another example, the terminal may configure at least two N _{TA, offset} according to a predefined rule. Among them, at least two N _{TA, offset} may be predefined in the predefined rule. For example, based on different usage scenarios, corresponding N _{TA, offset} are predefined respectively. For example, N _{TA, offset} corresponding to each scenario in at least two application scenarios is predefined. Assume that at least two N _{TA, offset} include a first N _{TA, offset} and a second N _{TA, offset} . The first N _{TA, offset} may be applied to the first scenario, and the second N _{TA, offset} may be applied to the second scenario. According to the predefined rule, the terminal may determine the first N _{TA, offset} used in the first scenario, and/or determine the second N _{TA, offset} used in the second scenario. So that the terminal can determine the uplink time unit boundary for sending uplink data based on the first N _{TA, offset} within the time domain range corresponding to the first scenario. And/or, within the time domain range corresponding to the second scenario, determine the uplink time unit boundary for sending uplink data based on the second N _{TA, offset} . It can be understood that the first scenario and the second scenario are different application scenarios.

In some cases, one of the first scenario and the second scenario mentioned above may be a scenario in which the network device performs interference measurement, and the other scenario may be a scenario in which the network device does not perform interference measurement. The time domain range for the network device to perform interference measurement may be determined by signaling instructions or predefined rules. The specific determination method is similar to the time window type. Similarly, reference may be made to the description of the corresponding subsequent embodiments, and the present disclosure will not go into details therein.

In step S12, an uplink time unit boundary is determined according to at least two timing advances.

In some embodiments, the terminal may determine the uplink time unit boundary according to the at least two timing advances determined in S11.

For example, the terminal may determine the uplink time unit boundary by using one of the at least two _NTA,offsets determined in S11 according to the current time domain range of the terminal. In some cases, the current time domain range of the terminal may be related to whether the network device performs interference measurement. Different time domain ranges may correspond to different scenarios.

For example, the terminal determines different N _{TA, offset} and the scenarios corresponding to each N _{TA, offset} based on configuration information or predefined rules in S11. The terminal can select N _{TA, offset} corresponding to the scenario in the corresponding scenario to determine the uplink time unit boundary.

It can be understood that the uplink time unit boundary represents the time boundary for sending uplink data, such as the start time boundary for the terminal to send uplink data. The uplink time unit boundary can be the boundary of the uplink OFDM symbol or the boundary of the uplink OFDM slot.

The "boundary" in the present disclosure can generally be understood as a starting position, such as the starting position of an OFDM symbol, the starting position of an OFDM slot, etc. Among them, the uplink time unit boundary can be considered as the starting position of an uplink OFDM symbol or an uplink OFDM slot. For example, the starting position of an uplink OFDM symbol or an uplink OFDM slot can be determined by frame timing.

In step S13, uplink data is sent based on the uplink time unit boundary.

In some embodiments, the terminal may send uplink data based on the uplink time unit boundary determined in S12.

It can be understood that the terminal can determine the uplink time unit boundary in S12 according to at least two N _{TA, offset} determined in S11. And send uplink data based on the uplink time unit boundary. By configuring multiple N _{TA, offset} , the terminal can use appropriate N _{TA, offset} in different scenarios to determine the uplink time unit boundary in the corresponding scenario. Compared with the fixed use of zero N _{TA, offset} in some schemes, the present disclosure can reduce the number of unusable symbols in the cell. And when the scenario is related to interference measurement of the network device, the terminal can also use appropriate N _{TA, offset} to determine the uplink time unit boundary, thereby avoiding ISI interference with the reference signal sent by the network device.

In some embodiments, in order to enable the serving cell network device to receive the uplink signal sent by the serving cell terminal and the reference signal sent by the neighboring cell network device within the CP duration, the first N _{TA, offset} may be less than or equal to 0. For example, as shown in FIG6 , the terminal determines the uplink time unit boundary for sending uplink data based on the first N _{TA, offset} , and transmits the uplink data based on the above uplink time unit boundary. Under the condition of N _{TA, offset} = 0, the uplink data arrives at The time between the arrival time of the reference signal sent by the neighboring cell network device and the arrival time interval of the reference signal sent by the neighboring cell network device is equal to T _delay . Wherein, T _delay is the transmission time of the reference signal from the neighboring cell network device to the serving cell network device. Considering that the distance between the serving cell network device and the neighboring cell network device is relatively close (for example, it can be 500m). In most scenarios, T _delay is less than the CP duration in the corresponding OFDM symbol. Based on this, it can be ensured that the network device receives the uplink data sent by the terminal of the same serving cell and the reference signal sent by the neighboring cell network device within the CP range, thereby effectively reducing the ISI interference between the signals and improving the data transmission efficiency and the interference measurement accuracy. It can be understood that the reference signal sent by the neighboring cell can be a reference signal for interference measurement, such as CLI RS.

In some embodiments, in order to ensure the uplink and downlink switching time of the network device and/or the terminal, the second N _{TA, offset} may be greater than 0. For example, as shown in FIG7 , the terminal determines the uplink time unit boundary for sending uplink data based on the second N _{TA, offset} . It can be seen that the uplink time unit and the downlink time unit for sending uplink data by the terminal have a certain delay, that is, the oblique line filled area shown in FIG7 . The delay can be determined based on the second N _{TA, offset} . In some examples, assuming that the scenario used by the second N _{TA, offset} is a scenario in which the network device does not perform interference measurement, there is no need to consider whether the network device can receive the uplink data sent by the terminal of the serving cell and the reference signal sent by the neighboring cell network device within the CP duration. In this case, the serving cell network device determines the uplink time unit boundary for receiving uplink data based on the second N _{TA, offset,} so that the uplink time unit is ahead of the downlink time unit by a certain time duration. When the network device performs uplink and downlink switching, it can use this time period for uplink and downlink switching, and thus does not need to occupy a certain symbol before or after the uplink and downlink switching. This avoids the number of symbols occupied by uplink and downlink switching, and improves the uplink transmission performance.

The present disclosure configures a plurality of different time advances for the terminal so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation, which can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided by the embodiment of the present disclosure, at least two time advances can be determined in at least one of the following ways: receiving first configuration information, and determining at least two time advances based on the first configuration information; and determining at least two time advances based on a first predefined rule.

In some embodiments, the terminal may receive first configuration information. The terminal may determine at least two timing advances based on the received first configuration information.

For example, the terminal receives first configuration information sent by the network device. The first configuration information is used to indicate at least two timing advances. The terminal can determine at least two timing advances according to the received first configuration information.

For example, the first configuration information may be carried in radio resource control (RRC) signaling, medium access control element (MAC CE) signaling and/or downlink control information (DCI).

For example, taking the first configuration information carried in the RRC signaling, the at least two N _{TA, offsets} are two N _{TA, offsets} as an example. The two N _{TA, offsets} may include a first N _{TA, offset} and a second N _{TA, offset} .

For the first N _{TA, offset} , the terminal may receive a first RRC signaling, which may be used to indicate the first N _{TA, offset} . In some cases, the terminal may use the first N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the first scenario to send uplink data. In another case, the terminal may receive a first RRC signaling, which indicates the first N _{TA, offset} , indicates that the first N _{TA, offset} corresponds to the first scenario, and configures the time domain range corresponding to the first scenario. For example, the first RRC signaling indicates the first N _{TA, offset} corresponding to the first scenario, and the time domain range in which the first scenario is effective. The terminal may determine the first N _{TA, offset} corresponding to the first scenario based on the first RRC signaling. And use the first N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the first scenario to send uplink data.

Similarly, for the second N _{TA, offset} , the terminal may receive a second RRC signaling, which may be used to indicate the second N _{TA, offset} . In some cases, the terminal may use the second N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the second scenario to send uplink data. In another case, the terminal may receive a second RRC signaling, which indicates the second N _{TA, offset} , indicates that the second N _{TA, offset} corresponds to the second scenario, and configures the time domain range corresponding to the second scenario. For example, the second RRC signaling indicates the second N _TA, offset corresponding to the second scenario, and the time domain range in which the second scenario is effective. The terminal may determine the second N _{TA, offset} corresponding to the second scenario based on the second RRC signaling. And use the second N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the second scenario to send uplink data.

In some embodiments, the second RRC signaling may be n-timing advance offset (n-TimingAdvanceOffset) signaling.

In some embodiments, the first RRC signaling and the second RRC signaling mentioned above may be the same RRC signaling. For example, the first RRC signaling and the second RRC signaling may be the same newly defined RRC signaling, or may reuse an existing RRC signaling.

In some embodiments, the first RRC signaling and the second RRC signaling are different RRC signalings. For example, the first RRC signaling may be the same newly defined RRC signaling, or may reuse an existing RRC signaling. The second RRC signaling may be n-TimingAdvanceOffset signaling.

In some embodiments, one of the first scenario and the second scenario may be a scenario in which the network device performs interference measurement, and the other scenario may be a scenario in which the network device does not perform interference measurement. The configuration information indicates two N _TA,offset , which may include: N _TA,offset corresponding to when the network device performs interference measurement, and N _TA,offset corresponding to when the network device does not perform interference measurement. The terminal may determine, based on the received first configuration information, N _TA,offset corresponding to when the network device performs interference measurement, and N _TA,offset corresponding to when the network device does not perform interference measurement.

It is worth noting that in the disclosed solution, the time domain range corresponding to the interference measurement performed by the network device can be determined by configuration information or predefined rules. For example, the terminal can determine the time domain range corresponding to the interference measurement performed by the network device based on rate matching resource (RMR) signaling, and apply the corresponding N _{TA, offset} within the corresponding time domain range.

In some embodiments, the terminal may determine at least two timing advances based on a first predefined rule.

For example, multiple N _{TA, offset} may be predefined, such as N _{TA, offset} corresponding to a first scenario is predefined, and N _{TA, offset} corresponding to a second scenario is predefined. The terminal determines N _{TA, offset} corresponding to the predefined first scenario and N _{TA, offset} corresponding to the predefined second scenario according to the first predefined rule. It can be considered that the first predefined rule can predefine N TA, offset corresponding to the corresponding scenario based on different usage scenarios. So that the terminal can determine N _{TA, offset} corresponding to different scenarios based on the first predefined rule, and use N _{TA, offset corresponding} to the scenario to determine the uplink time unit boundary within the time domain range corresponding to the corresponding scenario.

For example, taking the at least two N _{TA, offset} as two N _{TA, offset} as an example, the two N _{TA, offset} may include a first N _{TA, offset} and a second N _{TA, offset} .

For the first N _{TA, offset} , the first N _{TA, offset} may be predefined, that is, the first predefined rule predefines the first N _{TA, offset} . The first predefined rule may predefine the first N _{TA, offset} , and the first N _{TA, offset} corresponds to the first scenario. The terminal may determine the first N _{TA, offset} corresponding to the first scenario based on the first predefined rule. So that the terminal determines the uplink time unit boundary based on the first N _{TA, offset} within the time domain range corresponding to the first scenario.

For the second N _{TA, offset} , the second N _{TA, offset} may be predefined, that is, the first predefined rule predefines the second N _{TA, offset} . The first predefined rule may predefine the second N _{TA, offset} , and the second N _{TA, offset} corresponds to the second scenario. The terminal may determine the second N _{TA, offset} corresponding to the second scenario based on the first predefined rule. So that the terminal determines the uplink time unit boundary based on the second N _{TA, offset} within the time domain range corresponding to the second scenario.

In some embodiments, one of the first scenario and the second scenario may be a scenario in which the network device performs interference measurement, and the other scenario may be a scenario in which the network device does not perform interference measurement. The time domain range of the quantity may be determined by signaling indication or predefined rules. The specific determination method is similar to the time window. Please refer to the description of the corresponding subsequent embodiments, and the present disclosure will not go into details. In this case, assuming that the first predefined rule defines two N _{TA, offset} , it may include: N _{TA, offset} corresponding to when the network device performs interference measurement, and N _{TA, offset} corresponding to when the network device does not perform interference measurement. The terminal may determine, according to the first predefined rule, N _{TA, offset} corresponding to when the network device performs interference measurement, and N _{TA, offset} corresponding to when the network device does not perform interference measurement.

In some embodiments, the terminal may determine at least two timing advances based on the first configuration information and the first predefined rule.

For example, the terminal may first determine whether the first configuration information is received. In the case where the terminal receives the first configuration information, at least two time advances may be determined based on the first configuration information. If the terminal does not receive the first configuration information within the first preset time, the terminal may determine at least two time advances based on a first predefined rule. Alternatively, the first configuration information received by the terminal only indicates one or more of the at least two time advances, that is, the first configuration information does not indicate all of the at least two time advances. The terminal may determine the time advance not indicated in the first configuration information based on the first predefined rule.

For example, taking the at least two N _{TA, offset} as two N _{TA, offset} as an example, the two N _{TA, offset} may include a first N _{TA, offset} and a second N _{TA, offset} .

In some cases, if the terminal receives the first configuration information within the first preset time, the terminal can determine the first N _{TA, offset} and the second N _{TA, offset} based on the first configuration information. For example, the first RRC signaling and the second RRC signaling are received, the first RRC signaling is used to indicate the first N _{TA, offset} , and the second RRC signaling is used to indicate the second N _{TA, offset} . Among them, the first RRC signaling and the second RRC signaling can be the same RRC signaling or different RRC signaling. In other cases, if the terminal does not receive the first configuration information within the first preset time, the terminal can determine the first N _{TA, offset} and the second N _{TA, offset} based on the first preset rule. For example, the first preset rule predefines the first N _{TA, offset} corresponding to the first scenario and the second N _{TA, offset} corresponding to the second scenario. The terminal can determine the N _{TA, offset} corresponding to the corresponding scenario based on the first preset rule.

In other cases, the first configuration information may indicate only one of the first N _{TA, offset} and the second N TA _{, offset} . For example, the first N _{TA, offset} and the second N _{TA, offset} are indicated by different RRC signalings. The terminal may receive only one RRC signaling. For example, the terminal only receives the first RRC signaling or the second RRC signaling. The terminal may determine the N _{TA, offset} indicated by the RRC signaling based on the received RRC signaling. In this case, the terminal may further determine another unindicated N _{TA, offset} based on the first predefined rule. Assuming that the terminal receives the first RRC signaling, A first N _TA,offset corresponding to the first scenario is determined based on the first RRC signaling. Meanwhile, a second N _TA,offset corresponding to the second scenario is predefined in the first predefined rule, and the terminal can determine the second N _TA,offset corresponding to the second scenario based on the first predefined rule.

For example, it can be assumed that the terminal receives the n-TimingAdvanceOffset signaling within the first preset time, and determines the second N _{TA, offset} corresponding to the second scenario based on the n-TimingAdvanceOffset signaling. It can be assumed that the second scenario is a scenario in which the network device does not perform interference measurement. When the first N _{TA, offset} corresponding to the first scenario is predefined in the first predefined rule, the terminal can also determine the first N _{TA, offset} corresponding to the first scenario based on the first predefined rule. Among them, the first scenario can be a scenario in which the network device performs interference measurement.

Of course, in the above embodiments, the terminal determines at least two N _{TA, offset} based on the first configuration information, which may be executed when the terminal receives the first configuration information, or at a certain time point after the terminal receives the first configuration information. The present disclosure does not limit this. At the same time, in the above embodiments, the terminal determines at least two N _{TA, offset} based on the first predefined rule, which may be executed when the terminal is in the corresponding scenario, or the terminal determines at least two N _{TA, offset} based on the first predefined rule at a certain time point in advance, so as to further determine the uplink time unit boundary according to the determined N _{TA, offset} when the terminal is in the corresponding scenario, which is not limited in the present disclosure.

It can be understood that the first preset time mentioned above can be a time period for the terminal to determine whether the first configuration information is received. For example, a first preset time is pre-set for the terminal to determine whether the first configuration information is received within the time period, or all of at least two N _{TA, offsets} are determined based on the first configuration information. For example, the start time of the first preset time and the duration of the preset first time can be pre-defined, or the start time of the first preset time and the end time of the first preset time can be pre-defined. When the terminal is within the time domain range corresponding to the first preset time, if the first configuration information is not received, or all of at least two N _{TA, offsets} are not determined based on the first configuration information, the terminal can further determine the remaining undetermined N _{TA, offset} through the first predefined rule.

In some embodiments, the first preset time may be defined based on an OFDM symbol, an OFDM time slot, a frame or a subframe, which is not limited in the present disclosure.

It should be understood that the above-mentioned first preset time can be set arbitrarily according to actual conditions, and the present disclosure does not limit it.

In some embodiments, the first configuration information may be any one or more combinations of RRC signaling, MAC CE signaling and/or DCI, which is not limited in the present disclosure.

It can be understood that in this embodiment, the terminal can jointly determine at least two timing advances based on the first configuration information and the first predefined rule.

The present disclosure provides multiple ways to determine at least two timing advances so that the terminal can use appropriate timing advances in corresponding situations. The uplink time unit boundary is determined by an appropriate time advance, and uplink data is sent. This can reduce the number of symbols occupied by network devices before and after uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

In the communication method provided in the embodiment of the present disclosure, at least two timing advances include a first timing advance. FIG8 is a flow chart of another communication method according to an exemplary embodiment. As shown in FIG8 , the method may further include the following steps:

In step S21 , a first time window is determined.

In some embodiments, the at least two timing advances may include a first timing advance.

In some embodiments, the terminal may further determine a first time window, wherein the first time window may be a time window for the network device to perform interference measurement, and/or the first time window may be a time window for applying the first time advance.

For example, the terminal receives configuration information sent by the network device, and the configuration information may indicate the first time window. The terminal determines the first time window based on the configuration information.

It can be understood that the configuration information can directly indicate the time window for the network device to perform interference measurement. The terminal can use the time window for performing interference measurement as the first time window, and the terminal can perform subsequent S22 within the time window. The configuration information can also directly indicate the time window for applying the first time advance, and the terminal performs S22 within the time window. However, it should be understood that the time window for applying the first time advance can be the time window for the network device to perform interference measurement, and it may not be the time window for the network device to perform interference measurement, and the present disclosure does not limit it.

For example, the configuration information received by the terminal may include one or more parameters such as the configuration period of the first time window, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols of the first time window. The terminal may determine the first time window based on one or more parameters such as the configuration period, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols in the configuration information. Of course, the first time window may be a time window for the network device to perform interference measurement, or the first time window may be a time window for applying the first time advance, which is not limited in the present disclosure. Among them, the time window for applying the first time advance may be a time window for the network device to perform interference measurement, or a time window for the network device not to perform interference measurement.

In some cases, the configuration information may include parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the first time window, the number of continuous time slots in the first time window, the number of continuous frames in the first time window, the number of continuous subframes in the first time window, etc.

For another example, the terminal determines the first time window based on the second predefined rule. Among them, the second predefined rule may predefine a time window for the network device to perform interference measurement, or a first time window for applying the first time advance. For example, the second predefined rule predefines which time domains are time windows for the network device to perform interference measurement, or predefines which time domains are first time windows for applying the first time advance. The terminal can determine the first time window based on the second predefined rule. Determine the first time window.

For example, the second predefined rule may predefine N continuous time units and a time unit offset. The time unit may be an OFDM symbol, an OFDM time slot, a frame or a subframe. Assume that 10 OFDM time slots are a first time window. Then the second predefined rule may predefine a starting time slot and a duration, or a starting time slot and an ending time slot. For example, taking the starting time slot as 0 as an example, within the same frame, time slot 0 to time slot 9 is a time window, time slot 10 to time slot 19 is another time window, and so on. Of course, assuming that the time unit offset is 2, within the same frame, time slot 2 to time slot 11 is a time window, time slot 12 to time slot 21 is another time window, and so on.

In some embodiments, assuming that the first time window is associated with the first N _TA,offset , the first predefined rule for predefining the time offset may also predefine a window index associated with the first N _TA,offset , thereby indicating the association between the first N _TA,offset and the first time window.

Assume that the first time window can be a time window when the network device performs interference measurement, and set the terminal to use the first time advance to determine the uplink time unit boundary within the first time window. It can be considered that the first time advance is the time advance used by the terminal when the network device performs interference measurement. In some cases, the first time advance can be set to be less than or equal to 0, such as shown in Figure 6. The serving cell network device can receive the uplink data sent by the same cell terminal within the CP duration, and the reference signal for interference measurement sent by the neighboring cell network device, thereby avoiding ISI interference between the uplink data sent by the same cell terminal and the reference signal sent by the neighboring cell network device.

Determining the uplink time unit boundary according to at least two time advances in S12 may further include the following steps:

In step S22, within the first time window, an uplink time unit boundary is determined based on the first timing advance.

In some embodiments, the terminal may determine the uplink time unit boundary based on the first timing advance within the first time window determined in S21.

That is, the terminal may determine the uplink time unit boundary based on the first time advance within the time window in which the network device performs interference measurement. And/or, the terminal may determine the uplink time unit boundary based on the first time advance within the time window in which the first time advance is applied.

For example, the terminal can determine the time window for the network device to perform interference measurement, and can pre-set the time window for the network device to perform interference measurement to correspond to the first time advance. Then the terminal can determine the uplink time unit boundary based on the first time advance within the time window for the network device to perform interference measurement. And send uplink data using the determined uplink time unit boundary within the time window for the network device to perform interference measurement. It can be understood that this example corresponds to a scenario of directly indicating the time window for the network device to perform interference measurement. In this scenario, the first time advance can be a time advance corresponding to the time window dedicated to the network device for performing interference measurement.

For another example, if the first time window determined by the terminal is a time window for applying the first time advance, the terminal can directly determine the uplink time unit boundary based on the first time advance in the time window. The uplink data is sent at the uplink time unit boundary. This situation may be a scenario where the terminal directly determines the time window for applying the first time advance, and the time window for applying the first time advance may be related to or unrelated to the interference measurement performed by the network device, which is not limited in the present disclosure.

The present disclosure determines the corresponding time advance through the time window, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device for uplink and downlink switching before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided in the embodiment of the present disclosure, at least two timing advances include a second timing advance. FIG9 is a flow chart of another communication method according to an exemplary embodiment. As shown in FIG9 , the method may further include the following steps:

In step S31 , a second time window is determined.

In some embodiments, the at least two timing advances may include a second timing advance.

In some embodiments, the terminal may also determine a second time window, wherein the second time window does not overlap with the first time window in the time domain.

It is understandable that, since the second time window does not overlap with the first time window in the time domain, the second time window may be a time window in which the network device does not perform interference measurement, and/or the second time window may be a time window in which the second time advance is applied.

For example, the terminal receives configuration information sent by the network device, and the configuration information may indicate the second time window. The terminal determines the second time window based on the configuration information.

It can be understood that the terminal can directly determine the time window in which the network device does not perform interference measurement through configuration information. In some cases, the terminal can use the time window in which no interference measurement is performed as the second time window, and can perform subsequent S32 within the time window. The terminal can also directly determine the time window for applying the second time advance through configuration information, and perform S32 within the time window. The terminal can also determine the first time window through configuration information, and implicitly indicate the second time window. That is, except for the first time window, all can be considered as the second time window. However, it should be understood that the time window for applying the second time advance can be a time window in which the network device does not perform interference measurement, or a time window in which the network device performs interference measurement, which is not limited in the present disclosure.

For example, the configuration information received by the terminal may include one or more parameters such as the configuration period of the second time window, the measurement time slot offset or the measurement symbol offset, the number of continuous time slots or symbols in the second time window. The terminal may determine the second time window based on one or more parameters such as the configuration period, the measurement time slot offset or the measurement symbol offset, the number of continuous time slots or symbols in the configuration information. Of course, the second time window may be a time window in which the network device does not perform interference measurement, or the second time window may be a time window in which the second time advance is applied, which is not limited in the present disclosure. Among them, the time window in which the second time advance is applied may be a time window in which the network device does not perform interference measurement, or the time window in which the network device performs interference measurement. time window.

In some cases, the configuration information may include parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the first time window, the number of continuous time slots in the first time window, the number of continuous frames in the first time window, the number of continuous subframes in the first time window, etc.

For another example, the terminal determines the second time window based on the second predefined rule. Among them, the second predefined rule may predefine a time window in which the network device does not perform interference measurement, or a second time window in which the second time advance is applied. For example, in the second predefined rule, which time domains are predefined as time windows in which the network device does not perform interference measurement, or which time domains are predefined as second time windows in which the second time advance is applied. The terminal can determine the second time window based on the second predefined rule.

For example, the second predefined rule may predefine M continuous time units and a time unit offset. The time unit may be an OFDM symbol, an OFDM time slot, a frame or a subframe. Assume that 10 OFDM time slots are a second time window. Then the second predefined rule may predefine a starting time slot and a continuous duration, or a starting time slot and an ending time slot. For example, taking the starting time slot as 0 as an example, time slot 0 to time slot 9 in the same frame is a time window, time slot 10 to time slot 19 is another time window, and so on. Of course, assuming that the time unit offset is 2, then in the same frame, time slot 2 to time slot 11 is a time window, time slot 12 to time slot 21 is another time window, and so on.

In some embodiments, assuming that the second time window is associated with the second N _TA,offset , the first predefined rule for predefining the time offset may also predefine a window index associated with the second N _TA,offset , thereby indicating the association between the second N _TA,offset and the second time window.

For another example, the terminal may determine a first time window and use a time window other than the first time window as a second time window. The manner of determining the first time window may refer to the corresponding description in S21, and will not be described in detail in this disclosure.

Assuming that the second time window can be a time window when the network device does not perform interference measurement, the terminal is set to use the second time advance to determine the uplink time unit boundary within the second time window. It can be considered that the second time advance is the time advance used by the terminal when the network device does not perform interference measurement. In some cases, the second time advance can be set to be greater than or equal to 0. For example, as shown in Figure 7, when the second time advance is greater than 0, the network device is reserved for uplink and downlink conversion time, which can reduce the number of other symbols occupied by the network device for uplink and downlink conversion, reduce the situation where the occupied symbols cannot communicate, increase the number of available symbols, and thus improve data transmission efficiency. When the second time advance is equal to 0, it can be configured to be the same as the first time advance, that is, only one time advance is configured, reducing the communication overhead generated by configuring the time advance.

Determining the uplink time unit boundary according to at least two time advances in S12 may further include the following steps:

In step S32, within the second time window, an uplink time unit boundary is determined based on the second timing advance.

In some embodiments, the terminal may determine the uplink time unit boundary based on the second timing advance within the second time window determined in S31.

That is, the terminal may determine the uplink time unit boundary based on the second time advance in a time window in which the network device does not perform interference measurement. And/or, the terminal may determine the uplink time unit boundary based on the second time advance in a time window in which the second time advance is applied. And/or, the terminal may determine the uplink time unit boundary based on the second time advance in a time window other than the first time window.

For example, the terminal can determine the time window in which the network device does not perform interference measurement, and can pre-set the time window in which the network device does not perform interference measurement to correspond to the second time advance. Then the terminal can determine the uplink time unit boundary based on the second time advance within the time window in which the network device does not perform interference measurement. And send uplink data using the determined uplink time unit boundary within the time window in which the network device does not perform interference measurement. It can be understood that this example corresponds to a scenario of a time window that directly indicates that the network device does not perform interference measurement. In this scenario, the second time advance can be a time advance corresponding to a time window dedicated to the network device not performing interference measurement.

For another example, if the second time window determined by the terminal is a time window for applying the second time advance, the terminal can directly determine the uplink time unit boundary based on the second time advance within the time window. And send uplink data using the determined uplink time unit boundary within the second time window. This situation can be a scenario where the terminal directly determines the time window for applying the second time advance, and the time window for applying the second time advance may be related to or not related to the network device not performing interference measurement, which is not limited in the present disclosure.

For another example, if the terminal determines the first time window and then determines that the time window other than the first time window is the second time window, the terminal can determine the uplink time unit boundary within the time window based on the second time advance. And send uplink data using the determined uplink time unit boundary within the second time window. Of course, in this case, the corresponding relationship between the second time window and the second time advance can be preset.

The present disclosure determines the corresponding time advance through the time window, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device for uplink and downlink switching before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided by the embodiment of the present disclosure, the first time window and/or the second time window can be determined by at least one of the following methods: receiving second configuration information, and determining the first time window and/or the second time window based on the second configuration information; determining the first time window and/or the second time window based on a second predefined rule.

In some embodiments, the terminal may receive the second configuration information. The terminal may determine the first time window and/or the second time window based on the received second configuration information.

For example, the terminal receives second configuration information sent by the network device. The second configuration information is used to indicate the first time window and/or the second time window. The terminal determines the first time window and/or the second time window according to the received second configuration information. Window.

For example, the second configuration information may indicate the first time window and/or the second time window. The first time window may correspond to the first N _{TA, offset} , and the second time window may correspond to the second N _{TA, offset} . In some cases, the first time window may be set as the time window corresponding to when the network device performs interference measurement, and the second time window may be set as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window may also be the time window corresponding to when the network device does not perform interference measurement, and the second time window may also be the time window corresponding to when the network device performs interference measurement, which is not limited in the present disclosure. The terminal may determine the above-mentioned first time window and/or second time window based on the received second configuration information, so that the terminal may subsequently determine the uplink time unit boundary based on the corresponding N _{TA, offset} within the first time window and/or the second time window, and send uplink data.

It can be understood that the present disclosure configures the first N _{TA, offset} associated with the first time window and the second N _{TA, offset} associated with the second time window. It can be ensured that when the first N _{TA, offset} is less than or equal to 0, as shown in FIG6, ISI interference between the uplink data sent by the terminal and the reference signal sent by the neighboring cell network device is avoided in the first time window. And when the second N _{TA, offset} is greater than 0, as shown in FIG7, it can be ensured that the number of other symbols occupied by the network device for uplink and downlink conversion is reduced in the second time window, the number of available symbols is increased, and the data transmission efficiency is improved.

For example, the second configuration information can be carried in RRC signaling, MAC CE signaling and/or DCI.

For example, the terminal can receive the RMR configuration sent by the network device, and the terminal determines the first time window and/or the second time window according to the corresponding information indicated in the RMR. Among them, RMR can be carried by RRC signaling, MAC CE signaling and/or DCI. For example, it can be carried by one of the signalings among RRC signaling, MAC CE signaling and DCI, or by multiple signalings. For example, part of the time window is indicated by RRC signaling, and then one or more of the multiple time windows indicated by RRC are activated by DCI, thereby determining the first time window and/or the second time window. Afterwards, the terminal can determine the uplink time unit boundary based on the corresponding N _{TA, offset} within the time domain range corresponding to the first time window and/or the second time window, and send uplink data.

For the first time window, the terminal may receive second configuration information, where the second configuration information is used to indicate the first time window. The terminal may receive second configuration information, where the second configuration information indicates a time window for the network device to perform interference measurement, and the terminal may use the time window as the first time window. Alternatively, the terminal may receive second configuration information, where the second configuration information indicates a time window for applying the first time advance, and the terminal may use the time window as the first time window.

For example, the second configuration information configures one or more parameters such as a configuration period of the first time window, a measurement time slot offset or a measurement symbol offset, and a continuous time slot or symbol number of the first time window. The terminal may determine the first time window based on one or more parameters such as a configuration period, a measurement time slot offset or a measurement symbol offset, and a continuous time slot or symbol number in the configuration information.

In some cases, the second configuration information may include parameters related to the first time window, such as parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the first time window, the number of continuous time slots in the first time window, the number of continuous frames in the first time window, the number of continuous subframes in the first time window, and the like.

Similarly, for the second time window, the terminal may receive second configuration information, which is used to indicate the second time window. The terminal may receive second configuration information, which indicates a time window in which the network device does not perform interference measurement, and the terminal may use the time window as the second time window. Alternatively, the terminal may receive second configuration information, which indicates a time window in which the second time advance is applied, and the terminal may use the time window as the second time window. Alternatively, the terminal may receive second configuration information, which indicates the first time window, and the terminal may use all time windows other than the first time window as the second time window.

For example, the second configuration information configures one or more of the parameters such as the configuration period of the second time window, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols of the second time window. The terminal may determine the second time window based on the configuration period, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols, and the one or more parameters in the configuration information.

In some cases, the second configuration information may include parameters related to the second time window, such as parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the second time window, the number of continuous time slots in the second time window, the number of continuous frames in the second time window, the number of continuous subframes in the second time window, and the like.

In some embodiments, the terminal may determine the first time window and/or the second time window based on a second predefined rule.

For example, the second predefined rule predefines the first time window and/or the second time window, such as predefines the first time window using the first N _{TA, offset} , and/or the second time window using the second N _{TA, offset} . In some cases, the first time window can be set as the time window corresponding to when the network device performs interference measurement, and the second time window can be set as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window can also be the time window corresponding to when the network device does not perform interference measurement, and the second time window can also be the time window corresponding to when the network device performs interference measurement, which is not limited in the present disclosure. The terminal determines the first time window and/or the second time window according to the predefined second predefined rule, so that the terminal subsequently determines the uplink time unit boundary based on the corresponding N _{TA, offset} within the time domain range corresponding to the first time window and/or the second time window, and sends uplink data.

For example, the second predefined rule may predefine N continuous time units and/or M time units, wherein the time unit may be an OFDM symbol, an OFDM time slot, a frame or a subframe. Assume that 10 OFDM time slots are a first time window and 5 OFDM time slots are a second time window. Then the second predefined rule may predefine the start time slot and duration of each time window, or the start time slot and end time slot of each time window. For example, within the same frame, Slot 0 to slot 9 is a first time window, slot 10 to slot 14 is a second time window, etc. Of course, the second predefined rule can also define an offset parameter of the time window. Assuming the offset parameter is 2, in the same frame, slot 2 to slot 11 is a first time window, slot 12 to slot 16 is a second time window, etc.

In some embodiments, assuming that the first time window is associated with the first N _{TA, offset} , and/or the second time window is associated with the second N _{TA, offset} , then in the first predefined rule for predefining the time offset, the window index associated with the first N _{TA, offset} may be predefined, and/or the window index associated with the second N _{TA, offset} may be predefined, thereby indicating the association between the first N TA _{, offset} and the first time window, and/or indicating the association between the second N _{TA, offset} and the second time window.

In some embodiments, the terminal may determine the first time window and/or the second time window based on the second configuration information and the second predefined rule.

For example, the terminal may first determine whether the second configuration information is received. In the case where the terminal receives the second configuration information, the first time window and/or the second time window may be determined based on the second configuration information. If the terminal does not receive the second configuration information within the second preset time, the terminal may determine the first time window and/or the second time window based on a second predefined rule. Alternatively, the second configuration information received by the terminal only indicates the first time window or the second time window, that is, the second configuration information does not indicate all of at least two time windows. The terminal may determine the time window not indicated in the second configuration information based on the second predefined rule.

For example, taking the at least two time windows as two time windows as an example, the two time windows may include a first time window and a second time window.

In some cases, if the terminal receives the second configuration information within the second preset time, the terminal can determine the first time window and the second time window based on the second configuration information. In other cases, if the terminal does not receive the second configuration information within the second preset time, the terminal can determine the first time window and the second time window based on the second preset rule. For example, the second preset rule predefines the time window for the network device to perform interference detection, or predefines the time window for applying the first N _{TA, offset} ; and, the second preset rule predefines the time window for the network device not to perform interference detection, or predefines the time window for applying the second N _{TA, offset} , or predefines the first time window and implicitly indicates the second time window (that is, all time windows other than the first time window are the second time window). The terminal can determine the first time window and the second time window based on the second preset rule.

In other cases, the second configuration information may indicate only one of the first time window and the second time window. The terminal may determine the time window indicated by the second configuration information based on the received second configuration information. In this case, the terminal may further determine another unindicated time window based on the second predefined rule. Assuming that the terminal receives the second configuration information and determines the first time window based on the second configuration information. At the same time, the second time window is predefined in the second predefined rule, the terminal may determine the second time window based on the second predefined rule.

For example, it can be assumed that the terminal receives the RMR configuration within the second preset time and determines the first time window or the second time window based on the RMR configuration. It can be assumed that the second predefined rule predefines the time window that is not determined in the first time window and the second time window, and the terminal can also determine the time window not indicated in the second configuration information based on the second predefined rule. In some cases, one of the first time window and the second time window may be a time window in which the network device performs interference measurement, and the other may be a time window in which the network device does not perform interference measurement.

It can be understood that how the second predefined rule defines the first time window and the second time window can be referred to the description of the aforementioned embodiment, and the present disclosure will not elaborate on it.

Of course, in the above embodiments, the terminal determines at least two time windows based on the second configuration information, which may be performed when the terminal receives the second configuration information, or at a certain time point after the terminal receives the second configuration information. This disclosure is not limited. At the same time, in the above embodiments, the terminal determines at least two time windows based on the second predefined rule, which may be the terminal determining at least two time windows based on the second predefined rule at any time point, which is not limited in this disclosure.

It can be understood that the second preset time mentioned above can be a time period for the terminal to determine whether the second configuration information is received. For example, a second preset time is pre-set for the terminal to determine whether the second configuration information is received within the time period, or all of at least two time windows are determined based on the second configuration information. For example, the start time of the second preset time and the duration of the second preset time can be pre-defined, or the start time of the preset second time and the end time of the second preset time can be pre-defined. When the terminal is within the time domain range corresponding to the second preset time, if the second configuration information is not received, or all of at least two time windows are not determined based on the second configuration information, the terminal can further determine the remaining undetermined time advance through a second predefined rule.

In some embodiments, the second preset time may be defined based on an OFDM symbol, an OFDM time slot, a frame or a subframe, which is not limited in the present disclosure.

It should be understood that the second preset time mentioned above can be set arbitrarily according to actual conditions, and the present disclosure does not limit it.

In some embodiments, the second configuration information may be any one or more combinations of RRC signaling, MAC CE signaling and/or DCI, which is not limited in the present disclosure.

It can be understood that in this embodiment, the terminal can jointly determine the first time window and/or the second time window based on the second configuration information and the second predefined rule.

The present disclosure provides multiple ways to determine the time window, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary within the corresponding time window and send uplink data. It can reduce the number of symbols occupied by the network device for uplink and downlink switching before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided by the embodiment of the present disclosure, the terminal does not expect to send an uplink channel and/or an uplink signal in the first time unit after the first time window and/or in the last time unit within the first time window.

In some embodiments, at the first time unit after the first time window, the terminal does not expect to send an uplink channel and/or uplink signals.

For example, in some cases, the network device may occupy the first time unit after the downlink/uplink conversion, such as an OFDM symbol or an OFDM time slot, when performing uplink/downlink conversion. The network device cannot complete the reception of the data sent by the terminal in this time unit. Therefore, the terminal does not expect to send an uplink channel and/or an uplink signal in this time unit.

For example, the uplink channel may include one or more of a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH). The uplink signal may be a sounding reference signal (SRS).

In some embodiments, at the last time unit in the first time window, the terminal does not expect to send an uplink channel and/or an uplink signal.

For example, in some cases, the network device may occupy the last time unit before the uplink/downlink conversion, such as an OFDM symbol or an OFDM time slot. The network device cannot complete the reception of the data sent by the terminal in this time unit. Therefore, the terminal does not expect to send an uplink channel and/or an uplink signal in this time unit.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

It can be understood that the "not expecting" involved in the present disclosure means not paying attention to whether the event described later occurs. For example, if the terminal does not expect to receive information A, it means that the terminal does not care whether information A can be received. In other words, the other end may not send information A, and the terminal will not be able to receive information A. Alternatively, the other end may still send information A, but the terminal may choose to ignore information A, or discard or mark information A as invalid after receiving it. Of course, the present disclosure does not limit the specific implementation process.

In some embodiments, the terminal does not expect to send an uplink channel and/or an uplink signal in a plurality of adjacent time units after the first time window.

For example, in some cases, the network device may occupy multiple adjacent time units after the downlink/uplink conversion, such as OFDM symbols or OFDM time slots. The network device cannot complete the reception of the data sent by the terminal in these multiple time units. Therefore, the terminal does not expect to send an uplink channel and/or an uplink signal in these multiple time units.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

In some embodiments, the terminal does not expect to send an uplink channel and/or an uplink signal during the last multiple time units within the first time window.

For example, in some cases, the network device may occupy the last multiple time units before the uplink/downlink conversion, such as OFDM symbols or OFDM time slots. The network device cannot complete the reception of the data sent by the terminal in these multiple time units. Therefore, the terminal does not expect to send an uplink channel and/or an uplink signal in this time unit.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

The present invention avoids the problem of network devices performing It can solve the data transmission failure caused by uplink and downlink switching and improve the data transmission efficiency.

In the communication method provided by the embodiment of the present disclosure, at the first time unit after the first time window and/or at the last time unit within the first time window, the terminal does not expect to receive a downlink channel and/or a downlink signal.

In some embodiments, at a first time unit after the first time window, the terminal does not expect to receive a downlink channel and/or a downlink signal.

For example, in some cases, the network device may occupy the first time unit after the uplink/downlink conversion, such as an OFDM symbol or an OFDM time slot. The network device cannot send data in this time unit. Therefore, the terminal does not expect to receive a downlink channel and/or a downlink signal in this time unit.

For example, the downlink channel may include one or more of a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH). The downlink signal may be a CSI-RS.

In some embodiments, at the last time unit in the first time window, the terminal does not expect to receive a downlink channel and/or a downlink signal.

For example, in some cases, the network device may occupy the last time unit before the downlink/uplink conversion, such as an OFDM symbol or an OFDM time slot, when performing uplink/downlink conversion. The network device cannot send data in this time unit. Therefore, the terminal does not expect to receive a downlink channel and/or a downlink signal in this time unit.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

In some embodiments, the terminal does not expect to receive a downlink channel and/or a downlink signal during a plurality of time units after the first time window.

For example, in some cases, the network device may occupy multiple time units after the uplink/downlink conversion, such as OFDM symbols or OFDM time slots. The network device cannot send data in these multiple time units. Therefore, the terminal does not expect to receive the downlink channel and/or downlink signal in this time unit.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

In some embodiments, the terminal does not expect to receive a downlink channel and/or a downlink signal during the last plurality of time units within the first time window.

For example, in some cases, the network device may occupy the last multiple time units before the downlink/uplink conversion, such as OFDM symbols or OFDM time slots, for uplink/downlink conversion. The network device cannot send data in these multiple time units. Therefore, the terminal does not expect to receive the downlink channel and/or downlink signal in these time units.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

The present disclosure improves data transmission efficiency by not expecting to receive channels and/or signals in specific time units to avoid data transmission failures caused by uplink and downlink switching of network devices.

In the communication method provided by the embodiment of the present disclosure, the first timing advance is less than or equal to 0.

In some embodiments, the first timing advance may be less than or equal to zero.

For example, the first N _{TA, offset} is less than 0. Or, the first N _{TA, offset} is equal to 0.

It can be understood that when the first N _{TA, offset} is less than or equal to 0, as shown in FIG6 , the uplink time unit boundary determined by the terminal of the serving cell based on the first N _{TA, offset} can be the same as the reference time. This allows the network equipment of the serving cell to receive the uplink data sent by the terminal of the serving cell and the reference signal sent by the network equipment of the neighboring cell within the CP duration. This avoids ISI interference between the uplink data sent by the terminal of the serving cell and the reference signal sent by the network equipment of the neighboring cell.

In some embodiments, it is considered that the network device may occupy a symbol before or after the uplink and downlink switching when performing uplink and downlink switching, and the network device cannot perform data transmission on the occupied symbol, that is, the symbol is unavailable to the network device. The terminal also needs to perform uplink and downlink switching, and when the terminal adopts the first _NTA,offset , the uplink and downlink switching will also occupy a symbol before or after the uplink and downlink switching. And the terminal cannot perform data transmission on the occupied symbol, that is, the symbol is unavailable to the terminal.

Therefore, in some embodiments, the terminal and the network device unavailable symbol may be configured as the same symbol, that is, a symbol before and after the uplink and downlink switching occupied by the network device is the same symbol as a symbol before and after the uplink and downlink switching occupied by the terminal.

In some embodiments, a certain symbol before and after the uplink and downlink switching that the terminal expects to be occupied by can be configured to be the same symbol as a certain symbol before and after the uplink and downlink switching occupied by the network device for uplink and downlink switching.

Alternatively, in some embodiments, the terminal may be configured not to expect a certain symbol before and after the uplink and downlink switching to be occupied by the uplink and downlink switching, which is different from a certain symbol before and after the uplink and downlink switching occupied by the network device for the uplink and downlink switching.

The present disclosure provides a more specific first time advance so that the terminal uses an appropriate time advance to determine the uplink time unit boundary and send uplink data. It can ensure that the serving cell network device receives the uplink data sent by the same serving cell terminal within the CP duration, and the reference signal for interference measurement sent by the neighboring cell network device, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

In the communication method provided by the embodiment of the present disclosure, the second timing advance is greater than or equal to 0.

In some embodiments, the second timing advance may be greater than or equal to zero.

For example, the second N _{TA, offset} is greater than 0. Or, the second N _{TA, offset} is equal to 0.

It can be understood that when the second N _TA,offset is equal to 0, it can be considered that the second N _TA,offset can be the same as the first N _TA,offset . Therefore, only one timing advance value may be configured, thereby reducing resource consumption and signaling overhead caused by configuring multiple timing advance values.

When the second N _{TA, offset} is greater than 0, the second N _{TA, offset} may be the same as N _{TA, offset} in the TDD scenario in the conventional scheme. In this case, as shown in FIG7 , the terminal determines the boundary of the uplink time unit for sending uplink data based on the second N _{TA, offset} . As shown in FIG7 , the starting position corresponding to the first uplink (UL) symbol. The starting position is the position indicated by the uplink data sending time in FIG7 . T _{TA, offset} shown in FIG7 represents the specific advance duration determined based on N _{TA, offset} . Among them, T _{TA, offset} is equal to N _{TA, offset} T _c , and T _c is the basic amount of time. It can be seen that the oblique line filled area shown in FIG7 represents the delay between the uplink time unit and the downlink time unit for the terminal to send uplink data. Among them, the delay can be determined based on the second N _{TA, offset} . In some examples, assuming that the scenario used by the second _{NTA, offset} is a scenario in which the network device does not perform interference measurement, there is no need to consider whether the network device can receive the uplink data sent by the terminal of the serving cell and the reference signal sent by the neighboring cell network device within the CP duration. In this case, the network device can use this time period for uplink and downlink switching, and does not need to occupy a symbol before or after the uplink and downlink switching. This avoids the number of symbols occupied by uplink and downlink switching and improves uplink transmission performance.

The present disclosure provides a more specific second time advance so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data. It can reduce the number of symbols occupied by the network device for uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

Based on the same concept, the present disclosure also provides a communication method applied to a network device.

FIG. 10 is a flow chart of another communication method according to an exemplary embodiment. As shown in FIG. 10 , the method may be executed by a network device, and the method may include the following steps:

In step S41, at least two timing advances are determined.

In some embodiments, the network device may determine at least two timing advances. For example, different timing advances may be applicable to different conditions associated with interference measurement performed by the network device, or different timing advances may be applicable to pre-configured specified scenarios, which are not limited in the present disclosure.

For example, the network device may determine at least two cell-level TA information. For example, there may be two N _{TA, offsets} . Different N _{TA, offsets} are applicable to different conditions. For example, different conditions may be related to the network device performing interference measurement. Then one N _{TA, offset} may be related to the network device performing interference measurement, and another N _{TA, offset} may be related to the network device not performing interference measurement.

For example, the network device may directly configure at least two N _{TA, offsets} . The configured at least two N _{TA, offsets} may be used in different scenarios. Assume that the at least two N _{TA, offsets} include a first N _{TA, offset} and a second N _{TA, offset} . The first N _{TA, offset} can be applied to the first scenario. The network device can configure the first N _{TA, offset} and use the first N _{TA, offset} as the N _{TA, offset} used in the time domain range corresponding to the first scenario, so that the network device determines the uplink time unit boundary for sending uplink data based on the first N _{TA, offset} within the time domain range corresponding to the first scenario. Alternatively, the network device configures the first N _{TA, offset} , configures the first N _{TA, offset} corresponding to the first scenario, and configures the time domain range corresponding to the first scenario. The network device can determine the first N _{TA, offset} used in the first scenario based on the configuration. So that the terminal uses the first N _{TA, offset} to determine the uplink time unit boundary for sending uplink data within the time domain range corresponding to the first scenario. Similarly, the second N _{TA, offset} can be applied to the second scenario. The network device can configure the second N _{TA, offset} . And the second N _{TA, offset} is used as the N _{TA, offset} used in the time domain range corresponding to the second scenario, so that the network device determines the uplink time unit boundary for sending uplink data based on the second N _{TA, offset} in the time domain range corresponding to the second scenario. Alternatively, the network device is configured with the second N _{TA, offset} , and the second N _{TA, offset} is configured to correspond to the second scenario, and the time domain range corresponding to the second scenario is configured. The network device can determine the second N _{TA, offset} used in the second scenario based on the configuration. So that the terminal uses the second N _{TA, offset} to determine the uplink time unit boundary for sending uplink data in the time domain range corresponding to the second scenario.

For another example, the network device may determine at least two N _{TA, offsets} according to predefined rules. Among them, at least two N _{TA, offsets} may be predefined in the predefined rules. For example, based on different usage scenarios, corresponding N _{TA, offsets} are predefined respectively. For example, N _{TA, offsets} corresponding to each scenario in at least two application scenarios are predefined. Assume that at least two N _{TA, offsets} include a first N _{TA, offset} and a second N _{TA, offset} . The first N _{TA, offset} may be applied to the first scenario, and the second N _{TA, offset} may be applied to the second scenario. The network device may determine the first N _{TA, offset} used in the first scenario and/or determine the second N _{TA, offset} used in the second scenario according to the predefined rules. So that the network device can determine the uplink time unit boundary for sending uplink data based on the first N _{TA, offset} within the time domain range corresponding to the first scenario. And/or, determine the uplink time unit boundary for sending uplink data based on the second N _{TA, offset} within the time domain range corresponding to the second scenario. It can be understood that the first scenario and the second scenario are different application scenarios. Among them, the time domain range for the network device to perform interference measurement can be determined by signaling instructions or predefined rules. The specific determination method is similar to the time window. Please refer to the description of the subsequent corresponding embodiments, and this disclosure will not repeat it.

In some cases, one of the first scenario and the second scenario mentioned above may be a scenario in which the network device performs interference measurement, and the other scenario may be a scenario in which the network device does not perform interference measurement.

In step S42, an uplink time unit boundary is determined according to at least two timing advances.

In some embodiments, the network device may determine the uplink time unit boundary according to the at least two timing advances determined in S41.

For example, the network device may determine the uplink time unit boundary using one of the at least two _NTA,offsets determined in S41 based on the current time domain range of the network device. In some cases, the current time domain range of the network device may be related to whether the network device performs interference measurement. Different time domain ranges may correspond to different scenarios.

For example, the network device determines different N _{TA, offset} and the scenarios corresponding to each N _{TA, offset} based on configuration or predefined rules in S41. Then the network device can select N _{TA, offset} corresponding to the scenario in the corresponding scenario to determine the uplink time unit boundary.

It can be understood that the uplink time unit boundary represents the time boundary for receiving uplink data, such as the starting time boundary for a network device to receive uplink data. The uplink time unit boundary can be the boundary of an uplink OFDM symbol or the boundary of an uplink OFDM slot.

The "boundary" in the present disclosure can generally be understood as a starting position, such as the starting position of an OFDM symbol, the starting position of an OFDM slot, etc. Among them, the uplink time unit boundary can be considered as the starting position of an uplink OFDM symbol or an uplink OFDM slot. For example, the starting position of an uplink OFDM symbol or an uplink OFDM slot can be determined by frame timing.

In step S43, uplink data is received based on the uplink time unit boundary.

In some embodiments, the network device may receive uplink data based on the uplink time unit boundary determined in S42, wherein the uplink data may be uplink data sent by a terminal in the same serving cell as the network device.

In some embodiments, the network device may also receive a reference signal sent by a neighboring cell network device, and the reference signal may be a reference signal used for interference measurement. It is understood that the interference measurement may be a CLI measurement.

It can be understood that the network device can determine the uplink time unit boundary in S42 according to the at least two determined N _{TA, offset} . And receive the uplink data sent by the service cell terminal based on the uplink time unit boundary. By configuring multiple N _{TA, offset} , the network device can use appropriate N _{TA, offset} in different scenarios to determine the uplink time unit boundary in the corresponding scenario. Compared with the fixed use of zero N _{TA, offset} in some schemes, the present disclosure can reduce the number of unusable symbols in the cell. And when the scenario is related to the interference measurement of the network device, the terminal can also use appropriate N _{TA, offset} to determine the uplink time unit boundary, thereby avoiding ISI interference with the reference signal sent by the neighboring cell network device.

In some embodiments, in order to enable the serving cell network device to receive the uplink signal sent from the serving cell terminal and the reference signal sent from the neighboring cell network device within the CP duration, the first _{NTA, offset} may be less than Or equal to 0. For example, as shown in Figure 6, the network device determines the uplink time unit boundary for sending uplink data based on the first N _{TA, offset} , and transmits the uplink data based on the above uplink time unit boundary. Under the condition of N _{TA, offset} = 0, the time interval between the time when the uplink data arrives at the network device and the time when the reference signal sent by the neighboring cell network device arrives is equal to T _delay . Among them, T _delay is the transmission time of the reference signal from the neighboring cell network device to the serving cell network device. Considering that the distance between the serving cell network device and the neighboring cell network device is relatively close (for example, it can be 500m). In most scenarios, T _delay is less than the CP duration in the corresponding OFDM symbol. Based on this, it can be ensured that the network device receives the uplink data sent by the terminal of the same serving cell and the reference signal sent by the neighboring cell network device within the CP range, thereby effectively reducing the ISI interference between the signals and improving the data transmission efficiency and interference measurement accuracy. It can be understood that the reference signal sent by the neighboring cell can be a reference signal for interference measurement, such as CLI RS.

In some embodiments, in order to ensure the uplink and downlink switching time of the network device and/or the terminal, the second N _{TA, offset} may be greater than 0. For example, as shown in FIG7, the network device determines the uplink time unit boundary for sending uplink data based on the second N _{TA, offset} . It can be seen that the uplink time unit and the downlink time unit for sending uplink data by the network device have a certain delay, that is, the oblique line filled area shown in FIG7. The delay can be determined based on the second N _{TA, offset} . In some examples, assuming that the scenario used by the second N _{TA, offset} is a scenario in which the network device does not perform interference measurement, there is no need to consider whether the network device can receive the uplink data sent by the terminal of the serving cell and the reference signal sent by the neighboring cell network device within the CP duration. In this case, the serving cell network device determines the uplink time unit boundary for receiving uplink data based on the second N _{TA, offset} , so that the uplink time unit is ahead of the downlink time unit by a certain time duration. When the network device performs uplink and downlink switching, it can use this time period for uplink and downlink switching, and thus does not need to occupy a certain symbol before or after the uplink and downlink switching. This avoids the number of symbols occupied by uplink and downlink switching, and improves the uplink transmission performance.

The present disclosure configures a plurality of different time advances for the terminal so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data in the corresponding situation. This can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided by the embodiment of the present disclosure, determining at least two time advances in S41 may include: determining first configuration information, the first configuration information is used to indicate at least two time advances; sending the first configuration information; and/or, based on a first predefined rule, determining at least two time advances.

In some embodiments, the network device may determine first configuration information. The first configuration information is used to indicate at least two timing advances. The network device may send the first configuration information.

For example, the network device determines first configuration information. The first configuration information is used to indicate at least two timing advances. The network device may also send the first configuration information to the terminal so that the terminal determines at least two timing advances based on the first configuration information.

For example, the first configuration information can be carried in RRC signaling, MAC CE signaling and/or DCI.

For example, taking the first configuration information carried in the RRC signaling, the at least two N _{TA, offsets} are two N _{TA, offsets} as an example. The two N _{TA, offsets} may include a first N _{TA, offset} and a second N _{TA, offset} .

For the first N _{TA, offset} , the network device may determine a first RRC signaling, which may be used to indicate the first N _{TA, offset} . In some cases, the network device may determine the first RRC signaling, and determine that the first N _{TA, offset} is associated with the first scenario for determining the first RRC signaling. The network device may use the first N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the first scenario to receive uplink data. In another case, the network device may determine the first RRC signaling, which indicates the first N _{TA, offset} , and indicates that the first N _{TA, offset} corresponds to the first scenario, and indicates the time domain range corresponding to the first scenario. For example, the first RRC signaling indicates the first N _{TA, offset} corresponding to the first scenario, and the time domain range in which the first scenario is effective. The network device uses the first N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the first scenario to receive uplink data.

Similarly, for the second N _{TA, offset} , the network device may determine a second RRC signaling, which may be used to indicate the second N _{TA, offset} . In some cases, the network device may determine the second RRC signaling, and determine that the second N _{TA, offset} is associated with the second scenario for determining the second RRC signaling. The network device may use the second N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the second scenario to receive uplink data. In another case, the network device may determine a second RRC signaling, which indicates the second N _{TA, offset} , and indicates that the second N _{TA, offset} corresponds to the second scenario, and configures the time domain range corresponding to the second scenario. For example, the second RRC signaling indicates the second N _{TA, offset} corresponding to the second scenario, and the time domain range in which the second scenario is effective. The network device uses the second N _{TA, offset} to determine the uplink time unit boundary within the time domain range corresponding to the second scenario to receive uplink data.

In some embodiments, the second RRC signaling may be n-TimingAdvanceOffset signaling.

In some embodiments, the first RRC signaling and the second RRC signaling mentioned above may be the same RRC signaling. For example, the first RRC signaling and the second RRC signaling may be the same newly defined RRC signaling, or may reuse an existing RRC signaling.

In some embodiments, the first RRC signaling and the second RRC signaling are different RRC signalings. For example, the first RRC signaling may be the same newly defined RRC signaling, or may reuse an existing RRC signaling. The second RRC signaling may be n-TimingAdvanceOffset signaling.

In some embodiments, one of the first scenario and the second scenario may be a scenario in which the network device performs interference measurement, and the other scenario may be a scenario in which the network device does not perform interference measurement. The configuration information indicates two N _TA,offset , which may include: N _TA,offset corresponding to when the network device performs interference measurement, and N _TA,offset corresponding to when the network device does not perform interference measurement. The terminal may determine, based on the received first configuration information, N _TA,offset corresponding to when the network device performs interference measurement, and N _TA,offset corresponding to when the network device does not perform interference measurement.

It is worth noting that in the disclosed solution, the time domain range corresponding to the interference measurement performed by the network device can be determined by configuration information or predefined rules. For example, the terminal can determine the time domain range corresponding to the interference measurement performed by the network device based on rate matching resource (RMR) signaling, and apply the corresponding N _{TA, offset} within the corresponding time domain range.

In some embodiments, the network device may determine at least two timing advances based on a first predefined rule.

For example, multiple N _{TA, offset} may be predefined, such as N _{TA, offset} corresponding to a first scenario is predefined, and N _{TA, offset} corresponding to a second scenario is predefined. The network device determines N _{TA, offset} corresponding to the predefined first scenario and N _{TA, offset} corresponding to the predefined second scenario according to the first predefined rule. It can be considered that the first predefined rule can predefine N TA, offset corresponding to the corresponding scenario based on different usage scenarios. So that the network device can determine N _{TA, offset} corresponding to different scenarios based on the first predefined rule, and use N _{TA, offset corresponding} to the scenario to determine the uplink time unit boundary within the time domain range corresponding to the corresponding scenario.

For example, taking the at least two N _{TA, offset} as two N _{TA, offset} as an example, the two N _{TA, offset} may include a first N _{TA, offset} and a second N _{TA, offset} .

For the first N _{TA, offset} , the first N _{TA, offset} may be predefined, that is, the first predefined rule predefines the first N _{TA, offset} . The first predefined rule may predefine the first N _{TA, offset} , and the first N _{TA, offset} corresponds to the first scenario. The network device may determine the first N _{TA, offset} corresponding to the first scenario based on the first predefined rule. In this way, the network device determines the uplink time unit boundary based on the first N _{TA, offset} within the time domain range corresponding to the first scenario.

For the second N _{TA, offset} , the second N _{TA, offset} may be predefined, that is, the first predefined rule predefines the second N _{TA, offset} . The first predefined rule may predefine the second N _{TA, offset} , and the second N _{TA, offset} corresponds to the second scenario. The network device may determine the second N _{TA, offset} corresponding to the second scenario based on the first predefined rule. In this way, the network device determines the uplink time unit boundary based on the second N _{TA, offset} within the time domain range corresponding to the second scenario.

In some embodiments, one of the first scenario and the second scenario may be a scenario in which the network device performs interference measurement, and the other scenario may be a scenario in which the network device does not perform interference measurement. The time domain range of the quantity may be determined by signaling indication or predefined rules. The specific determination method is similar to the time window. Please refer to the description of the corresponding subsequent embodiments, and the present disclosure will not go into details. In this case, assuming that the first predefined rule defines two N _{TA, offset} , it may include: N _{TA, offset} corresponding to when the network device performs interference measurement, and N _{TA, offset} corresponding to when the network device does not perform interference measurement. The terminal may determine, according to the first predefined rule, N _{TA, offset} corresponding to when the network device performs interference measurement, and N _{TA, offset} corresponding to when the network device does not perform interference measurement.

In some embodiments, the network device may determine at least two timing advances based on the first configuration information and the first predefined rule.

For example, the network device may first determine the first configuration information. If the network device does not determine the first configuration information, at least two time advances may be determined based on the first predefined rule. Alternatively, the first configuration information only indicates one or more of the at least two time advances, and the network device may determine the time advance not indicated in the first configuration information based on the first predefined rule.

For example, taking the at least two N _{TA, offset} as two N _{TA, offset} as an example, the two N _{TA, offset} may include a first N _{TA, offset} and a second N _{TA, offset} .

In some cases, the network device is configured with a first N _{TA, offset} and a second N _{TA, offset} . For example, a first RRC signaling and a second RRC signaling are determined, the first RRC signaling is used to indicate the first N _{TA, offset} , and the second RRC signaling is used to indicate the second N _{TA, offset} . Among them, the first RRC signaling and the second RRC signaling can be the same RRC signaling or different RRC signaling. In other cases, if the network device is not configured with the first N _{TA, offset} and the second N _{TA, offset} , the network device can determine the first N _{TA, offset} and the second N _{TA, offset} based on a first preset rule. For example, the first preset rule predefines the first N _{TA, offset} corresponding to the first scenario and the second N _{TA, offset} corresponding to the second scenario. The network device can determine the N _{TA, offset} corresponding to the corresponding scenario based on the first preset rule.

In other cases, the network device may configure only one of the first N _{TA, offset} and the second N _{TA ,} offset. In this case, the network device may further determine another unconfigured N TA, offset based on the first predefined rule. Assume that the network device configures the first N _{TA, offset corresponding} to the first scenario. At the same time, the first predefined rule predefines the second N _{TA, offset} corresponding to the second scenario, then the network device may determine the second N _{TA, offset} corresponding to the second scenario based on the first predefined rule.

For example, it can be assumed that the network device determines the n-TimingAdvanceOffset signaling and indicates the second _NTA,offset corresponding to the second scenario based on the n-TimingAdvanceOffset signaling. It can be assumed that the second scenario is a scenario in which the network device does not perform interference measurement. When the first predefined rule predefines the first scenario corresponding to the first N _TA,offset , the network device may also determine a first N _TA,offset corresponding to a first scenario based on a first predefined rule, wherein the first scenario may be a scenario in which the network device performs interference measurement.

Of course, in the above embodiments, the network device determines at least two N _{TA, offset} based on the first predefined rule, which can be executed when the network device is in the corresponding scenario, or the network device determines at least two N _{TA, offset} based on the first predefined rule in advance at a certain time point, so that when the network device is in the corresponding scenario, the uplink time unit boundary is further determined according to the determined N _{TA, offset} , which is not limited in the present disclosure.

In some embodiments, the first configuration information may be carried through any one or more combinations of RRC signaling, MAC CE signaling and/or DCI, which is not limited in the present disclosure.

It can be understood that in this embodiment, the network device can jointly determine at least two timing advances based on the first configuration information and the first predefined rule.

The present disclosure provides multiple ways to determine at least two time advances, so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided in the embodiment of the present disclosure, at least two timing advances include a first timing advance. FIG11 is a flow chart of another communication method according to an exemplary embodiment. As shown in FIG11 , the method may further include the following steps:

In step S51, a first time window is determined.

In some embodiments, the at least two timing advances may include a first timing advance.

In some embodiments, the network device may further determine a first time window, wherein the first time window may be a time window for the network device to perform interference measurement, and/or the first time window may be a time window for applying the first time advance.

For example, the configuration information determined by the network device may indicate the first time window.

It can be understood that the configuration information determined by the network device can directly indicate the time window for the network device to perform interference measurement. The network device can use the time window for performing interference measurement as the first time window, and can perform subsequent S52 within the time window. The configuration information determined by the network device can also directly indicate the time window for applying the first time advance, and perform S52 within the time window. However, it should be understood that the time window for applying the first time advance can be the time window for the network device to perform interference measurement, or it can not be the time window for the network device to perform interference measurement, and the present disclosure does not limit it.

For example, the network device may configure one or more of the following parameters: a configuration period of the first time window, a measurement time slot offset or a measurement symbol offset, a continuous time slot or a symbol number of the first time window. Based on one or more parameters such as the configuration period, the measurement time slot offset or the measurement symbol offset, the continuous time slot or a symbol number, the first time window may be indicated. Of course, the first time window may be a time window for the network device to perform interference measurement, or the first time window may be a time window for applying the first time advance. The time window for applying the first timing advance may be a time window for the network device to perform interference measurement, or a time window for the network device not to perform interference measurement.

In some cases, the configuration information may include parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the first time window, the number of continuous time slots in the first time window, the number of continuous frames in the first time window, the number of continuous subframes in the first time window, etc.

For another example, the network device determines the first time window based on the second predefined rule. Among them, the second predefined rule may predefine a time window for the network device to perform interference measurement, or a first time window for applying the first time advance. For example, in the second predefined rule, which time domains are predefined as time windows for the network device to perform interference measurement, or which time domains are predefined as first time windows for applying the first time advance. The network device can determine the first time window based on the second predefined rule.

For example, the second predefined rule may predefine N continuous time units and a time unit offset. The time unit may be an OFDM symbol, an OFDM time slot, a frame or a subframe. Assume that 10 OFDM time slots are a first time window. Then the second predefined rule may predefine a starting time slot and a duration, or a starting time slot and an ending time slot. For example, taking the starting time slot as 0 as an example, within the same frame, time slot 0 to time slot 9 is a time window, time slot 10 to time slot 19 is another time window, and so on. Of course, assuming that the time unit offset is 2, within the same frame, time slot 2 to time slot 11 is a time window, time slot 12 to time slot 21 is another time window, and so on.

In some embodiments, assuming that the first time window is associated with the first N _TA,offset , the first predefined rule for predefining the time offset may also predefine a window index associated with the first N _TA,offset , thereby indicating the association between the first N _TA,offset and the first time window.

Assuming that the first time window can be a time window when the network device performs interference measurement, the network device is set to use a first time advance to determine the uplink time unit boundary within the first time window. It can be considered that the first time advance is the time advance used when the network device performs interference measurement. In some cases, the first time advance can be set to be less than or equal to 0, such as shown in Figure 6. The serving cell network device can receive the uplink data sent by the same cell terminal and the reference signal for interference measurement sent by the neighboring cell network device within the CP duration, thereby avoiding ISI interference between the uplink data sent by the same cell terminal and the reference signal sent by the neighboring cell network device.

Determining the uplink time unit boundary according to at least two time advances in S42 may further include the following steps:

In step S52, within the first time window, an uplink time unit boundary is determined based on the first timing advance.

In some embodiments, the network device may determine the uplink time unit boundary based on the first timing advance within the first time window determined in S51.

That is, the network device can measure the interference based on the first time advance within the time window of the network device. Determine an uplink time unit boundary. And/or, the network device may determine an uplink time unit boundary based on the first time advance within a time window in which the first time advance is applied.

For example, the network device can determine the time window for the network device to perform interference measurement, and can pre-set the time window for the network device to perform interference measurement to correspond to the first time advance. Then the network device can determine the uplink time unit boundary based on the first time advance within the time window for the network device to perform interference measurement. And receive uplink data and reference signals using the determined uplink time unit boundary within the time window for the network device to perform interference measurement. It can be understood that this example corresponds to a scenario in which the time window for the network device to perform interference measurement is directly determined. In this scenario, the first time advance can be a time advance corresponding to the time window dedicated to the network device for performing interference measurement.

For another example, if the first time window determined by the network device is a time window for applying the first time advance, the network device can directly determine the uplink time unit boundary based on the first time advance within the time window. And receive uplink data and reference signals using the determined uplink time unit boundary within the first time window. This situation may be a scenario where the network device directly determines the time window for applying the first time advance, and the time window for applying the first time advance may be related to or unrelated to the interference measurement performed by the network device, which is not limited in the present disclosure.

The present disclosure determines the corresponding time advance through the time window, so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data under corresponding circumstances. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided in the embodiment of the present disclosure, at least two timing advances include a second timing advance. FIG12 is a flow chart of another communication method according to an exemplary embodiment. As shown in FIG12, the method may further include the following steps:

In step S61 , a second time window is determined.

In some embodiments, the at least two timing advances may include a second timing advance.

In some embodiments, the network device may further determine a second time window, wherein the second time window does not overlap with the first time window in the time domain.

It is understandable that, since the second time window does not overlap with the first time window in the time domain, the second time window may be a time window in which the network device does not perform interference measurement, and/or the second time window may be a time window in which the second time advance is applied.

For example, the configuration information determined by the network device may indicate the second time window.

It can be understood that the network device can directly determine the time window in which the network device does not perform interference measurement through configuration information. In some cases, the network device can use the time window in which the network device does not perform interference measurement as the second time window, and can perform subsequent S62 within the time window. The network device can also directly determine the time window in which the second time advance is applied through configuration information, and perform S62 within the time window. The network device can also determine the first time window through configuration information, and implicitly Indicates the second time window. That is, except for the first time window, all other time windows can be considered as the second time window. However, it should be understood that the time window for applying the second time advance can be a time window in which the network device does not perform interference measurement, or a time window in which the network device performs interference measurement, which is not limited in the present disclosure.

For example, the network device configures one or more of the configuration period of the second time window, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols of the second time window. Based on one or more parameters such as the configuration period, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols, the second time window can be indicated. Of course, the second time window can be a time window in which the network device does not perform interference measurement, or the second time window can be a time window in which the second time advance is applied, which is not limited in the present disclosure. Among them, the time window in which the second time advance is applied can be a time window in which the network device does not perform interference measurement, or a time window in which the network device performs interference measurement.

In some cases, the configuration information may include parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the first time window, the number of continuous time slots in the first time window, the number of continuous frames in the first time window, the number of continuous subframes in the first time window, etc.

For another example, the terminal determines the second time window based on the second predefined rule. Among them, the second predefined rule may predefine a time window in which the network device does not perform interference measurement, or a second time window in which the second time advance is applied. For example, in the second predefined rule, it is predefined which time domains are time windows in which the network device does not perform interference measurement, or it is predefined which time domains are second time windows in which the second time advance is applied. The network device can determine the second time window based on the second predefined rule.

For example, the second predefined rule may predefine M continuous time units and a time unit offset. The time unit may be an OFDM symbol, an OFDM time slot, a frame or a subframe. Assume that 10 OFDM time slots are a second time window. Then the second predefined rule may predefine a starting time slot and a continuous duration, or a starting time slot and an ending time slot. For example, taking the starting time slot as 0 as an example, time slot 0 to time slot 9 in the same frame is a time window, time slot 10 to time slot 19 is another time window, and so on. Of course, assuming that the time unit offset is 2, then in the same frame, time slot 2 to time slot 11 is a time window, time slot 12 to time slot 21 is another time window, and so on.

In some embodiments, assuming that the second time window is associated with the second N _TA,offset , the first predefined rule for predefining the time offset may also predefine a window index associated with the second N _TA,offset , thereby indicating the association between the second N _TA,offset and the second time window.

For another example, the network device may determine a first time window and use a time window other than the first time window as a second time window. The manner of determining the first time window may refer to the corresponding description in S51, and will not be described in detail in this disclosure.

Assuming that the second time window may be a time window when the network device does not perform interference measurement, the network device is set to use the second time advance to determine the uplink time unit boundary within the second time window. It can be considered that the second time advance is the time window of the network device. The time advance used by the network device when no interference measurement is performed. In some cases, the second time advance can be set to be greater than or equal to 0. For example, as shown in Figure 7, when the second time advance is greater than 0, the network device is reserved for uplink and downlink conversion time, which can reduce the number of other symbols occupied by the network device for uplink and downlink conversion, reduce the situation where the occupied symbols cannot communicate, increase the number of available symbols, and thus improve data transmission efficiency. When the second time advance is equal to 0, it can be configured to be the same as the first time advance, that is, only one time advance is configured, reducing the communication overhead generated by configuring the time advance.

Determining the uplink time unit boundary according to at least two timing advances in S42 may further include the following steps:

In step S62, within the second time window, an uplink time unit boundary is determined based on the second timing advance.

In some embodiments, the network device may determine the uplink time unit boundary based on the second timing advance within the second time window determined in S61.

That is, the network device may determine the uplink time unit boundary based on the second time advance in a time window in which the network device does not perform interference measurement. And/or, the network device may determine the uplink time unit boundary based on the second time advance in a time window in which the second time advance is applied. And/or, the network device may determine the uplink time unit boundary based on the second time advance in a time window other than the first time window.

For example, the network device may determine a time window in which the network device does not perform interference measurement, and may pre-set the time window in which the network device does not perform interference measurement to correspond to the second time advance. The network device may determine the uplink time unit boundary based on the second time advance within the time window in which the network device does not perform interference measurement. And receive uplink data and reference signals using the determined uplink time unit boundary within the time window in which the network device does not perform interference measurement. It can be understood that this example corresponds to a scenario in which the time window in which the network device does not perform interference measurement is directly determined. In this scenario, the second time advance may be a time advance corresponding to a time window dedicated to the network device not performing interference measurement.

For another example, if the second time window determined by the network device is a time window for applying the second time advance, the network device can directly determine the uplink time unit boundary based on the second time advance within the time window. And receive uplink data and reference signals using the determined uplink time unit boundary within the second time window. This situation can be a scenario in which the network device directly determines the time window for applying the second time advance, and the time window for applying the second time advance may be related to or unrelated to the network device not performing interference measurement, which is not limited in the present disclosure.

For another example, if the network device determines the first time window and then determines that the time window other than the first time window is the second time window, the network device can determine the uplink time unit boundary within the time window based on the second time advance. And receive the uplink data and reference signal using the determined uplink time unit boundary within the second time window. Of course, in this case, the corresponding relationship between the second time window and the second time advance can be preset.

The present disclosure determines the corresponding time advance through the time window, so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data in the corresponding situation. The number of symbols occupied before and after the uplink and downlink switching is exchanged, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided by the embodiment of the present disclosure, the first time window and/or the second time window may be determined by at least one of the following methods: determining second configuration information, the second configuration information is used to indicate the first time window and/or the second time window; sending the second configuration information. And/or, based on a second predefined rule, determining the first time window and/or the second time window.

In some embodiments, the network device may determine the second configuration information. The second configuration information is used to indicate the first time window and/or the second time window. The network device may send the second configuration information.

For example, the network device determines the second configuration information. The second configuration information is used to indicate the first time window and/or the second time window. The network device may send the second configuration information to the terminal so that the terminal determines the first time window and/or the second time window based on the second configuration information.

For example, the second configuration information may indicate the first time window and/or the second time window. The first time window may correspond to the first N _{TA, offset} , and the second time window may correspond to the second N _{TA, offset} . In some cases, the first time window may be set as the time window corresponding to when the network device performs interference measurement, and the second time window may be set as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window may also be the time window corresponding to when the network device does not perform interference measurement, and the second time window may also be the time window corresponding to when the network device performs interference measurement, which is not limited in the present disclosure. The network device may determine the above-mentioned first time window and/or second time window according to the second configuration information, so as to subsequently determine the uplink time unit boundary based on the corresponding N _{TA, offset} in the first time window and/or the second time window, and receive uplink data.

It can be understood that the present disclosure configures the first N _{TA, offset} associated with the first time window and the second N _{TA, offset} associated with the second time window. It can be ensured that when the first N _{TA, offset} is less than or equal to 0, as shown in FIG6, ISI interference between the uplink data sent by the terminal and the reference signal sent by the neighboring cell network device is avoided in the first time window. And when the second N _{TA, offset} is greater than 0, as shown in FIG7, it can be ensured that the number of other symbols occupied by the network device for uplink and downlink conversion is reduced in the second time window, the number of available symbols is increased, and the data transmission efficiency is improved.

For example, the second configuration information can be carried in RRC signaling, MAC CE signaling and/or DCI.

For example, the network device may indicate the first time window and/or the second time window by configuring the RMR and indicating the corresponding information in the RMR. Among them, the RMR may be carried by RRC signaling, MAC CE signaling and/or DCI. For example, it may be carried by one of RRC signaling, MAC CE signaling and DCI, or by multiple signaling. For example, a partial time window may be indicated by RRC signaling, and then one or more of the multiple time windows indicated by RRC may be activated by DCI. Afterwards, the terminal may determine the uplink time unit boundary based on the corresponding N _{TA, offset} within the time domain range corresponding to the first time window and/or the second time window, and send uplink data.

For the first time window, the network device may configure second configuration information, where the second configuration information is used to indicate the first time window. The second configuration information indicates a time window in which the network device performs interference measurement, and the network device may use the time window as the first time window. Alternatively, the second configuration information indicates a time window in which the first time advance is applied, and the network device may use the time window as the first time window.

For example, the second configuration information configures one or more of the parameters such as the configuration period of the first time window, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols of the first time window. Based on one or more parameters such as the configuration period, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols in the configuration information, the first time window can be indicated.

In some cases, the second configuration information may include parameters related to the first time window, such as parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the first time window, the number of continuous time slots in the first time window, the number of continuous frames in the first time window, the number of continuous subframes in the first time window, and the like.

Similarly, for the second time window, the network device may configure second configuration information, and the second configuration information is used to indicate the second time window. The second configuration information indicates a time window in which the network device does not perform interference measurement, and the network device may use the time window as the second time window. Alternatively, the second configuration information indicates a time window in which the second time advance is applied, and the network device may use the time window as the second time window. Alternatively, the second configuration information indicates the first time window, and the network device may use all time windows other than the first time window as the second time window.

For example, the second configuration information configures one or more of the parameters such as the configuration period of the second time window, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols of the second time window. Based on one or more parameters such as the configuration period, the measurement time slot offset or the measurement symbol offset, the continuous time slot or the number of symbols in the configuration information, the second time window can be indicated.

In some cases, the second configuration information may include parameters related to the second time window, such as parameters based on OFDM symbols, time slots, frames or subframes, such as measuring one or more of OFDM symbol offset, time slot offset, frame offset, subframe offset, the number of continuous OFDM symbols in the second time window, the number of continuous time slots in the second time window, the number of continuous frames in the second time window, the number of continuous subframes in the second time window, and the like.

In some embodiments, the network device may determine the first time window and/or the second time window based on a second predefined rule.

For example, the second predefined rule predefines the first time window and/or the second time window, such as predefines the first time window using the first N _{TA, offset} , and/or the second time window using the second N _{TA, offset} . In some cases, the first time window can be set as the time window corresponding to when the network device performs interference measurement, and the second time window can be set as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window can also be the time window corresponding to when the network device performs interference measurement, and the second time window can also be the time window corresponding to when the network device does not perform interference measurement, which is not limited in the present disclosure. The network device determines the first time window and/or the second time window according to a predefined second predefined rule, so that subsequently, within the time domain range corresponding to the first time window and/or the second time window, the uplink time unit boundary is determined based on the corresponding _NTA,offset , and uplink data is received.

For example, the second predefined rule can predefine N continuous time units and/or M time units, where the time unit can be an OFDM symbol, an OFDM time slot, a frame or a subframe. Assume that 10 OFDM time slots are a first time window. 5 OFDM time slots are a second time window. Then the second predefined rule can predefine the starting time slot and duration of each time window, or the starting time slot and end time slot of each time window. For example, in the same frame, time slot 0 to time slot 9 is a first time window, time slot 10 to time slot 14 is a second time window, etc. Of course, the offset parameter of the time window can also be defined in the second predefined rule. Assuming that the offset parameter is 2, in the same frame, time slot 2 to time slot 11 is a first time window, time slot 12 to time slot 16 is a second time window, etc.

In some embodiments, assuming that the first time window is associated with the first N _{TA, offset} , and/or the second time window is associated with the second N _{TA, offset} , then in the first predefined rule for predefining the time offset, the window index associated with the first N _{TA, offset} may be predefined, and/or the window index associated with the second N _{TA, offset} may be predefined, thereby indicating the association between the first N TA _{, offset} and the first time window, and/or indicating the association between the second N _{TA, offset} and the second time window.

In some embodiments, the network device may determine the first time window and/or the second time window based on the second configuration information and the second predefined rule.

For example, the network device may first determine the second configuration information, and determine the first time window and/or the second time window based on the second configuration information. If the network device does not determine the second configuration information, the network device may determine the first time window and/or the second time window based on the second predefined rule. Alternatively, the network device is only configured with the first time window or the second time window, and the network device may determine the time window not indicated in the second configuration information based on the second predefined rule.

For example, taking the at least two time windows as two time windows as an example, the two time windows may include a first time window and a second time window.

In some cases, if the network device is not configured with the first time window and the second time window. For example, the second preset rule predefines the time window for the network device to perform interference detection, or predefines the time window for applying the first N _{TA, offset} ; and the second preset rule predefines the time window for the network device not to perform interference detection, or predefines the time window for applying the second N _{TA, offset} , or predefines the first time window and implicitly indicates the second time window (that is, all time windows other than the first time window are the second time window). The terminal can determine the first time window and the second time window based on the second preset rule.

In other cases, the network device may configure only one of the first time window and the second time window. In this case, the network device may further determine another unconfigured time window based on the second predefined rule. Assume that the network device is configured with a first time window. Meanwhile, the second predefined rule predefines a second time window, and the network device can determine the second time window based on the second predefined rule.

For example, it can be assumed that the network device is configured with RMR, and the RMR can indicate the first time window or the second time window. It can be assumed that the second predefined rule predefines a time window that is not configured in the first time window and the second time window, and the network device can also determine the unconfigured time window based on the second predefined rule. In some cases, one of the first time window and the second time window can be a time window in which the network device performs interference measurement, and the other can be a time window in which the network device does not perform interference measurement.

It can be understood that how the second predefined rule defines the first time window and the second time window can be referred to the description of the aforementioned embodiment, and the present disclosure will not elaborate on it.

Of course, in the above embodiments, the network device determines at least two time windows based on the second predefined rule. The network device may determine at least two time windows based on the second predefined rule at any time point, which is not limited in the present disclosure.

It should be understood that the second preset time mentioned above can be set arbitrarily according to actual conditions, and the present disclosure does not limit it.

In some embodiments, the second configuration information may be carried through any one or more combinations of RRC signaling, MAC CE signaling and/or DCI, which is not limited in the present disclosure.

It can be understood that in this embodiment, the network device can jointly determine the first time window and/or the second time window based on the second configuration information and the second predefined rule.

The present disclosure provides multiple ways to determine the time window so that the network device can use the appropriate time advance to determine the uplink time unit boundary within the corresponding time window and receive uplink data. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In the communication method provided by the embodiment of the present disclosure, an uplink channel and/or an uplink signal from the terminal is not received in the first time unit after the first time window and/or in the last time unit within the first time window.

In some embodiments, in a first time unit after the first time window, no uplink channel and/or uplink signal from the terminal is received.

For example, in some cases, the network device may occupy the first time unit after the downlink/uplink conversion, such as an OFDM symbol or an OFDM time slot, for uplink/downlink conversion. The network device cannot complete the reception of the data sent by the terminal in this time unit. Therefore, the network device does not receive the uplink channel and/or uplink signal from the terminal in this time unit. In other words, the network device does not expect to receive the uplink channel and/or uplink signal.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

In some embodiments, in the last time unit in the first time window, no uplink channel and/or uplink signal is received from the terminal.

For example, in some cases, the network equipment performing uplink/downlink conversion may occupy the last A time unit, such as an OFDM symbol or an OFDM time slot. The network device cannot receive the data sent by the terminal in this time unit. Therefore, the network device does not receive the uplink channel and/or uplink signal from the terminal in this time unit. In other words, the network device does not expect to receive the uplink channel and/or uplink signal.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

In some embodiments, the terminal does not expect to send an uplink channel and/or an uplink signal in a plurality of adjacent time units after the first time window.

For example, in some cases, the network device may occupy multiple adjacent time units after the downlink/uplink conversion, such as OFDM symbols or OFDM time slots. The network device cannot complete the reception of the data sent by the terminal in these multiple time units. Therefore, the terminal does not expect to send an uplink channel and/or an uplink signal in these multiple time units.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

In some embodiments, the terminal does not expect to send an uplink channel and/or an uplink signal during the last multiple time units within the first time window.

For example, in some cases, the network device may occupy the last multiple time units before the uplink/downlink conversion, such as OFDM symbols or OFDM time slots. The network device cannot complete the reception of the data sent by the terminal in these multiple time units. Therefore, the terminal does not expect to send an uplink channel and/or an uplink signal in this time unit.

For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

The present disclosure improves data transmission efficiency by not expecting to send channels and/or signals in specific time units to avoid data transmission failure caused by uplink and downlink switching of network devices.

In the communication method provided by the embodiment of the present disclosure, at the first time unit after the first time window and/or at the last time unit within the first time window, no downlink channel and/or downlink signal is scheduled to the terminal.

In some embodiments, in a first time unit after the first time window, no downlink channel and/or downlink signal is sent to the terminal.

For example, in some cases, the network device may occupy the first time unit after the uplink/downlink conversion, such as an OFDM symbol or an OFDM time slot. The network device cannot send data in this time unit. Therefore, the network device does not send a downlink channel and/or a downlink signal to the terminal in this time unit. In other words, the network device does not expect to send a downlink channel and/or a downlink signal.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

In some embodiments, in the last time unit in the first time window, no downlink channel and/or downlink signal is sent to the terminal.

For example, in some cases, the network device may occupy the last time unit before the downlink/uplink conversion, such as an OFDM symbol or an OFDM time slot. The network device cannot send data in this time unit. Therefore, the network device does not send a downlink channel and/or a downlink signal to the terminal in the time unit. In other words, the network device does not expect to send a downlink channel and/or a downlink signal.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

In some embodiments, the terminal does not expect to receive a downlink channel and/or a downlink signal during a plurality of time units after the first time window.

For example, in some cases, the network device may occupy multiple time units after the uplink/downlink conversion, such as OFDM symbols or OFDM time slots. The network device cannot send data in these multiple time units. Therefore, the terminal does not expect to receive the downlink channel and/or downlink signal in this time unit.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

In some embodiments, the terminal does not expect to receive a downlink channel and/or a downlink signal during the last plurality of time units within the first time window.

For example, in some cases, the network device may occupy the last multiple time units before the downlink/uplink conversion, such as OFDM symbols or OFDM time slots, for uplink/downlink conversion. The network device cannot send data in these multiple time units. Therefore, the terminal does not expect to receive the downlink channel and/or downlink signal in these time units.

For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS. The present disclosure improves data transmission efficiency by not expecting to receive channels and/or signals in specific time units to avoid data transmission failures caused by uplink and downlink switching of network devices.

In the communication method provided by the embodiment of the present disclosure, the first timing advance is less than or equal to 0.

In some embodiments, the first timing advance may be less than or equal to zero.

For example, the first N _{TA, offset} is less than 0. Or, the first N _{TA, offset} is equal to 0.

It can be understood that when the first N _{TA, offset} is less than or equal to 0, as shown in FIG6 , the uplink time unit boundary determined by the terminal of the serving cell based on the first N _{TA, offset} can be the same as the reference time. This allows the network equipment of the serving cell to receive the uplink data sent by the terminal of the serving cell and the reference signal sent by the network equipment of the neighboring cell within the CP duration. This avoids ISI interference between the uplink data sent by the terminal of the serving cell and the reference signal sent by the network equipment of the neighboring cell.

In some embodiments, it is considered that the network device may occupy a symbol before and after the uplink and downlink switching when performing uplink and downlink switching, and the network device cannot perform data transmission on the occupied symbol, that is, the symbol is unavailable to the network device. The terminal also needs to perform uplink and downlink switching, and when the terminal adopts the first _NTA,offset , the uplink and downlink switching will also occupy a symbol before and after the uplink and downlink switching. And the terminal cannot perform data transmission on the occupied symbol, that is, the symbol is unavailable to the terminal.

Therefore, in some embodiments, the terminal and the network device unavailable symbol may be configured as the same symbol, that is, a symbol before and after the uplink and downlink switching occupied by the network device is the same symbol as a symbol before and after the uplink and downlink switching occupied by the terminal.

In some embodiments, a certain symbol before and after the uplink and downlink switching that the terminal expects to be occupied by can be configured to be the same symbol as a certain symbol before and after the uplink and downlink switching occupied by the network device for uplink and downlink switching.

Alternatively, in some embodiments, the terminal may be configured not to expect a certain symbol before and after the uplink and downlink switching to be occupied by the uplink and downlink switching, which is different from a certain symbol before and after the uplink and downlink switching occupied by the network device for the uplink and downlink switching.

The present disclosure provides a more specific first time advance, so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data. It can ensure that the serving cell network device receives the uplink data sent by the same serving cell terminal within the CP duration, and the reference signal for interference measurement sent by the neighboring cell network device, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

In the communication method provided by the embodiment of the present disclosure, the second timing advance is greater than or equal to 0.

In some embodiments, the second timing advance may be greater than or equal to zero.

For example, the second N _{TA, offset} is greater than 0. Or, the second N _{TA, offset} is equal to 0.

It can be understood that when the second N _TA,offset is equal to 0, it can be considered that the second N _TA,offset can be the same as the first N _TA,offset . Therefore, only one timing advance value can be configured, thereby reducing resource consumption and signaling overhead caused by configuring multiple timing advance values.

When the second N _{TA, offset} is greater than 0, the second N _{TA, offset} may be the same as N _{TA, offset} in the TDD scenario in the conventional scheme. In this case, as shown in FIG7 , the terminal determines the boundary of the uplink time unit for sending uplink data based on the second N _{TA, offset} . As shown in FIG7 , the starting position corresponding to the first uplink (uplink, UL) symbol. The starting position is the position indicated by the uplink data sending time in FIG7 . T _{TA, offset} shown in FIG7 represents the specific advance duration determined based on N _{TA, offset} . Among them, T _{TA, offset} is equal to N _{TA, offset} T _c , and T _c is the basic amount of time. It can be seen that the oblique line filled area shown in FIG7 represents the delay between the uplink time unit and the downlink time unit for the terminal to send uplink data. Among them, the delay can be determined based on the second N _{TA, offset} . In some examples, assuming that the scenario used by the second _{NTA, offset} is a scenario in which the network device does not perform interference measurement, there is no need to consider whether the network device can receive the uplink data sent by the terminal of the service cell and the reference signal sent by the neighboring cell network device within the CP duration. In this case, the network device can use this time period to perform uplink and downlink switching, and there is no need to occupy a symbol before or after the uplink and downlink switching. This avoids the number of symbols occupied by uplink and downlink switching and improves uplink transmission performance.

The present disclosure provides a more specific second time advance so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data, which can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

The solutions involved in the present disclosure will be described below with reference to more specific examples.

In one implementation, taking the interference measurement as CLI measurement as an example, it can be assumed that the terminal is a Rel-18 or later version terminal, and the terminal is a terminal supporting the DTDD feature. The terminal performs corresponding CLI measurement reporting at a corresponding time-frequency domain position based on the network device configuration.

Wherein, N _{TA, offset} is a cell-level parameter, and all devices in the same serving cell correspond to the same N _{TA, offset} . Therefore, the present disclosure provides two N _{TA, offset} .

Two N _{TA, offsets} may be defined, namely, a first N _{TA, offset} and a second N _{TA, offset} . The first N _{TA, offset} is applied to the time domain range for the network device to perform CLI measurement, and the second N _{TA, offset} is applied outside the time domain range for the network device to perform CLI measurement. In some examples, the second N _{TA, offset} may be configured based on the signaling n-TimingAdvanceOffset. If the signaling n-TimingAdvanceOffset is not configured, it may be determined based on Table 1.

Table 1

For the first N _{TA, offset} , it can be determined based on the following method:

Method 1: The terminal receives RRC configuration signaling and determines the corresponding first N _{TA, offset} . The first N _{TA, offset is} configured based on the cell-level RRC signaling.

Method 2: The terminal determines based on a first predefined rule. Exemplarily, the first N _{TA, offset} is equal to 0, or the first N _{TA, offset} <0.

Method 3: The terminal receives RRC signaling and determines the first N _TA,offset . If the RRC signaling is not configured, the terminal determines the value of the first N _TA,offset based on the first predefined rule of method 2.

In some embodiments, the terminal may also determine one of the first N _TA,offset and the second N _TA,offset based on RRC signaling, and determine the other N _TA,offset based on a first predefined rule.

The present disclosure introduces two N _TA,offset , and the terminal applies one of the two N _TA,offset in different time domain ranges, which is beneficial to improving data transmission efficiency while ensuring the measurement accuracy of the CLI of the network device.

In one implementation, the terminal determines the time domain location where the network device performs CLI measurement between network devices, and the specific method includes:

Method 1: The terminal receives configuration signaling, which may be RRC, MAC CE and/or DCI. Determine the time domain location of the CLI measurement, which may specifically include: determining the measurement period, the measurement time slot offset, and the symbol where the measurement is located.

Method 2: Considering the time-frequency domain location where the network device performs the CLI measurement between network devices, the terminal cannot transmit data. To determine the time-frequency domain location where the terminal cannot transmit data, such time-frequency domain resources can be determined through RMR configuration. The terminal determines the OFDM symbol location where the network device CLI measurement is located based on the resources corresponding to the RMR and the CLI measurement between network devices.

Based on the OFDM symbol range where the network device CLI measures, the terminal may apply a first N _TA,offset on the OFDM symbol where the network device CLI measures; and the terminal may apply a second N _TA,offset outside the OFDM symbol range where the network device CLI measures.

Exemplarily, as shown in FIG13, between the terminal applying the first N _{TA, offset} and the terminal applying the second N _{TA, offset} , in order to achieve alignment of the boundary corresponding to the UL OFDM symbol corresponding to different N _TA , offset, the terminal does not expect to send PUSCH, PUCCH and/or SRS (i.e., UL OFDM symbol) on the first adjacent UL OFDM symbol after the first N _{TA, offset} , i.e., the symbol corresponding to "X!" in FIG13. Of course, in other examples, the alignment method for the boundary corresponding to the DL OFDM symbol is similar, i.e., the terminal does not expect to receive PDCCH, PDSCH and/or CSI-RS (i.e., DL OFDM symbol) on the first adjacent DL OFDM symbol after the first N _{TA, offset} .

The present disclosure determines the application time domain range corresponding to two N _TA,offsets , which is beneficial to improving data transmission efficiency while ensuring the measurement accuracy of the network device CLI.

In some implementations, the terminal determines N _TA,offset based on an existing mechanism, the network device receives a corresponding CLI RS signal on a CLI symbol, and abandons receiving uplink data of a corresponding serving cell.

The terminal determines the OFDM symbol where the network device CLI is measured. As shown in FIG14, at the OFDM symbol where the network device CLI is measured and the next adjacent OFDM symbol, the terminal does not expect to send PUSCH, PUCCH and/or SRS on the symbol (i.e., UL OFDM symbol), i.e., the symbol corresponding to "X!" in FIG14. Of course, in other examples, for the case where the network device sends the CLI reference signal on the DL OFDM symbol, the terminal does not expect to receive PDCCH, PDSCH and/or CSI-RS on the symbol (i.e., DL OFDM symbol).

The present disclosure takes into account the implementation of the base station to receive the corresponding CLI RS. In order to reduce the interference from the UL data of the serving UE, the terminal does not expect to transmit data in the OFDM symbol where the CLI RS is located. This can effectively reduce the impact of the standard and improve the CLI measurement accuracy.

It should be noted that those skilled in the art can understand that the various implementation methods/embodiments involved in the embodiments of the present disclosure can be used in conjunction with the aforementioned embodiments or can be used independently. Whether used alone or in conjunction with the aforementioned embodiments, the implementation principle is similar. In the implementation of the present disclosure, some embodiments are described in terms of implementation methods used together. Of course, those skilled in the art can understand that such examples are not limitations of the embodiments of the present disclosure.

Based on the same concept, the embodiments of the present disclosure also provide a communication device and equipment.

It is understandable that the communication device and equipment provided by the embodiments of the present disclosure include hardware structures and/or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of the present disclosure.

Fig. 15 is a schematic diagram of a communication device according to an exemplary embodiment. Referring to Fig. 15, the device 200 is applied to a terminal, and the device 200 may include: a processing module 201, used to determine at least two time advances; the processing module 201 is also used to determine an uplink time unit boundary according to the at least two time advances; a sending module 202, used to send uplink data based on the uplink time unit boundary.

The present disclosure configures a plurality of different time advances for the terminal so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation, which can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, the device 200 also includes: a receiving module 203, used to receive first configuration information; the processing module 201 is also used to determine at least two time advances based on the first configuration information; the processing module 201 is also used to determine at least two time advances based on a first predefined rule.

The present disclosure provides multiple ways to determine at least two time advances, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, at least two time advances include a first time advance; the processing module 201 is also used to: determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; within the first time window, determine the uplink time unit boundary based on the first time advance.

The present disclosure determines the corresponding time advance through the time window, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device for uplink and downlink switching before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, at least two time advances include a second time advance; the processing module 201 is also used to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; within the second time window, determine the uplink time unit boundary based on the second time advance.

The present disclosure determines the corresponding time advance through the time window, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device for uplink and downlink switching before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, the device 200 also includes: a receiving module 203 for receiving second configuration information; the processing module 201 is also used to determine the first time window and/or the second time window based on the second configuration information; the processing module 201 is also used to determine the first time window and/or the second time window based on a second predefined rule.

The present disclosure provides multiple ways to determine the time window, so that the terminal can use the appropriate time advance to determine the uplink time unit boundary within the corresponding time window and send uplink data. It can reduce the number of symbols occupied by the network device for uplink and downlink switching before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, the terminal does not expect to send an uplink channel and/or an uplink signal.

The present disclosure avoids data transmission failures caused by uplink and downlink switching of network devices by not expecting to send channels and/or signals in specific time units, thereby reducing the number of symbols occupied by uplink and downlink switching of network devices before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

In some embodiments, at a first time unit after the first time window, and/or within the first time window In the last time unit, the terminal does not expect to receive a downlink channel and/or a downlink signal.

The present disclosure avoids data transmission failures caused by uplink and downlink switching of network devices by not expecting to receive channels and/or signals in specific time units, thereby reducing the number of symbols occupied by uplink and downlink switching of network devices before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

In some implementations, the first timing advance is less than or equal to zero.

The present disclosure provides a more specific first time advance so that the terminal uses an appropriate time advance to determine the uplink time unit boundary and send uplink data. It can ensure that the serving cell network device receives the uplink data sent by the same serving cell terminal within the CP duration, and the reference signal for interference measurement sent by the neighboring cell network device, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

In some implementations, the second timing advance is greater than or equal to zero.

The present disclosure provides a more specific second time advance so that the terminal can use the appropriate time advance to determine the uplink time unit boundary and send uplink data. It can reduce the number of symbols occupied by the network device for uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

Fig. 16 is a schematic diagram of another communication device according to an exemplary embodiment. Referring to Fig. 16, the device 300 is applied to a network device, and the device 300 may include: a processing module 301, used to determine at least two timing advances; the processing module 301 is also used to determine an uplink time unit boundary according to the at least two timing advances; a receiving module 302, used to receive uplink data and a reference signal based on the uplink time unit boundary, wherein the reference signal is used for interference detection.

The present disclosure configures a plurality of different time advances for the terminal so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data in the corresponding situation. This can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, the device 300 also includes: the processing module 301 is also used to determine first configuration information, the first configuration information is used to indicate at least two time advance amounts; the sending module 303 is also used to send the first configuration information; and/or the processing module 301 is also used to determine at least two time advance amounts based on a first predefined rule.

The present disclosure provides multiple ways to determine at least two time advances, so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data in the corresponding situation. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, at least two time advances include a first time advance; the processing module 301 is also used to: determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; within the first time window, determine the uplink time unit boundary based on the first time advance.

The present invention determines the corresponding time advance through the time window, so that the network device can use the appropriate The time advance of the uplink time unit is used to determine the uplink time unit boundary and receive uplink data. This can reduce the number of symbols occupied by network devices before and after uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

In some embodiments, at least two time advances include a second time advance; the processing module 301 is also used to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; within the second time window, determine the uplink time unit boundary based on the second time advance.

The present disclosure determines the corresponding time advance through the time window, so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data under corresponding circumstances. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some embodiments, the device 300 also includes: the processing module 301 is also used to determine second configuration information, the second configuration information is used to indicate the first time window and/or the second time window; the sending module 303 is used to send the second configuration information; and/or the processing module 301 is also used to determine the first time window and/or the second time window based on a second predefined rule.

The present disclosure provides multiple ways to determine the time window so that the network device can use the appropriate time advance to determine the uplink time unit boundary within the corresponding time window and receive uplink data. It can reduce the number of symbols occupied by the network device before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving the uplink transmission performance.

In some implementations, an uplink channel and/or an uplink signal of the terminal is not received at a first time unit after the first time window and/or at a last time unit within the first time window.

The present disclosure avoids data transmission failures caused by uplink and downlink switching of network devices by not expecting to send channels and/or signals in specific time units, thereby reducing the number of symbols occupied by uplink and downlink switching of network devices before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

In some implementations, at a first time unit after the first time window and/or at a last time unit within the first time window, no downlink channel and/or downlink signal is sent to the terminal.

The present disclosure avoids data transmission failures caused by uplink and downlink switching of network devices by not expecting to receive channels and/or signals in specific time units, thereby reducing the number of symbols occupied by uplink and downlink switching of network devices before and after the uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

In some implementations, the first timing advance is less than or equal to zero.

The present disclosure provides a more specific first time advance so that the network device can use the appropriate time advance to determine the uplink time unit boundary and receive uplink data. It can ensure that the serving cell network device receives the uplink data sent by the same serving cell terminal within the CP duration, and the reference signal for interference measurement sent by the neighboring cell network device, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

In some implementations, the second timing advance is greater than or equal to zero.

The present disclosure provides a more specific second time advance so that the network device can use an appropriate time advance to determine The uplink time unit boundary is detected and uplink data is received. This can reduce the number of symbols occupied by network devices before and after uplink and downlink switching, thereby increasing the number of available symbols and improving uplink transmission performance.

Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

Fig. 17 is a schematic diagram of a communication device according to an exemplary embodiment. For example, the device 400 may be any terminal such as a mobile phone, a computer, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

17 , device 400 may include one or more of the following components: a processing component 402 , a memory 404 , a power component 406 , a multimedia component 408 , an audio component 410 , an input/output (I/O) interface 412 , a sensor component 414 , and a communication component 416 .

The processing component 402 generally controls the overall operation of the device 400, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 402 may include one or more modules to facilitate the interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

The memory 404 is configured to store various types of data to support operations on the device 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phone book data, messages, pictures, videos, etc. The memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

The power component 406 provides power to the various components of the device 400. The power component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 400.

The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front camera and/or a rear camera. When the device 400 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 410 is configured to output and/or input audio signals. For example, the audio component 410 includes a microphone (MIC), and when the device 400 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 404 or sent via the communication component 416. In some embodiments, the audio component 410 also includes a speaker for outputting audio signals.

I/O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 414 includes one or more sensors for providing various aspects of status assessment for the device 400. For example, the sensor assembly 414 can detect the open/closed state of the device 400, the relative positioning of components, such as the display and keypad of the device 400, and the sensor assembly 414 can also detect the position change of the device 400 or a component of the device 400, the presence or absence of user contact with the device 400, the orientation or acceleration/deceleration of the device 400, and the temperature change of the device 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 414 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 416 is configured to facilitate wired or wireless communication between the device 400 and other devices. The device 400 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of the device 400 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

FIG18 is a schematic diagram of another communication device according to an exemplary embodiment. For example, device 500 may be provided as a base station or a server. Referring to FIG18 , device 500 includes a processing component 522, which further includes one or more processors, and a memory resource represented by a memory 532 for storing data that can be executed by the processing component 522. The application stored in the memory 532 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 522 is configured to execute instructions to perform the above method.

The device 500 may also include a power supply component 526 configured to perform power management of the device 500, a wired or wireless network interface 550 configured to connect the device 500 to a network, and an input/output (I/O) interface 558. The device 500 may operate based on an operating system stored in the memory 532, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

The present disclosure configures two N _{TA, offsets} and designs rules to determine the application time domain ranges of the two N _{TA, offsets} , and uses corresponding N _{TA, offsets} to send uplink data in different time domain ranges, thereby improving uplink transmission performance as much as possible while ensuring CLI measurement accuracy.

It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

It is further understood that the meanings of the words "in response to" and "if" involved in the present disclosure depend on the context and the actual usage scenario. For example, the word "in response to" used herein can be interpreted as "at..." or "when..." or "if" or "if".

It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure.

It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims (24)

A communication method, characterized in that the method is executed by a terminal, comprising: determining at least two time advances; Determine an uplink time unit boundary according to the at least two time advances; Uplink data is sent based on the uplink time unit boundary. The method according to claim 1, characterized in that the at least two timing advances are determined in at least one of the following ways: receiving first configuration information, and determining the at least two timing advances based on the first configuration information; Based on a first predefined rule, the at least two timing advances are determined. The method according to claim 1 or 2, characterized in that the at least two timing advances include: a first timing advance; the method further includes: Determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; The determining the uplink time unit boundary according to the at least two time advances includes: In the first time window, the uplink time unit boundary is determined based on the first timing advance. The method according to claim 3, characterized in that the at least two timing advances include: a second timing advance; the method further includes: Determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; The determining the uplink time unit boundary according to the at least two time advances includes: In the second time window, the uplink time unit boundary is determined based on the second timing advance. The method according to claim 3 or 4, characterized in that the first time window and/or the second time window is determined by at least one of the following methods: receiving second configuration information, and determining the first time window and/or the second time window based on the second configuration information; Based on a second predefined rule, the first time window and/or the second time window are determined. The method according to any one of claims 3-5 is characterized in that, at the first time unit after the first time window and/or at the last time unit within the first time window, the terminal does not expect to send an uplink channel and/or an uplink signal. The method according to any one of claims 3-5 is characterized in that, at the first time unit after the first time window and/or at the last time unit within the first time window, the terminal does not expect to receive a downlink channel and/or a downlink signal. The method according to any one of claims 3 to 7, characterized in that the first timing advance is less than or equal to 0. The method according to claim 4, characterized in that the second timing advance is greater than or equal to 0. A communication method, characterized in that the method is executed by a network device, comprising: determining at least two time advances; Determine an uplink time unit boundary according to the at least two time advances; Uplink data is received based on the uplink time unit boundary. The method according to claim 10, characterized in that the determining of at least two timing advances comprises: determining first configuration information, where the first configuration information is used to indicate the at least two timing advances; sending the first configuration information; and/or, Based on a first predefined rule, the at least two timing advances are determined. The method according to claim 10 or 11, characterized in that the at least two timing advances include: a first timing advance; the method further includes: Determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and/or the first time window is a time window for applying the first time advance; The determining the uplink time unit boundary according to the at least two time advances includes: In the first time window, the uplink time unit boundary is determined based on the first timing advance. The method according to claim 12, characterized in that the at least two timing advances include: a second timing advance; the method further includes: Determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; The determining the uplink time unit boundary according to the at least two time advances includes: In the second time window, the uplink time unit boundary is determined based on the second timing advance. The method according to claim 12 or 13, characterized in that the first time window and/or the second time window is determined by: determining second configuration information, where the second configuration information is used to indicate the first time window and/or the second time window; sending the second configuration information; and/or, Based on a second predefined rule, the first time window and/or the second time window is determined. The method according to any one of claims 12-14 is characterized in that an uplink channel and/or uplink signal from the terminal is not received in a first time unit after the first time window and/or in a last time unit within the first time window. The method according to any one of claims 12-14 is characterized in that no downlink channel and/or downlink signal is sent to the terminal in the first time unit after the first time window and/or in the last time unit within the first time window. The method according to any one of claims 12-16 is characterized in that the first timing advance is less than or equal to 0. The method according to claim 13, characterized in that the second timing advance is greater than or equal to 0. A communication device, characterized in that the device comprises: A processing module, configured to determine at least two timing advances; The processing module is further used to determine an uplink time unit boundary according to the at least two time advances; A sending module is used to send uplink data based on the uplink time unit boundary. A communication method, characterized in that the method is executed by a network device, comprising: A processing module, configured to determine at least two timing advances; The processing module is further used to determine an uplink time unit boundary according to the at least two time advances; A receiving module is used to receive uplink data and a reference signal based on the uplink time unit boundary, wherein the reference signal is used for interference detection. A communication device, comprising: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the method described in any one of claims 1 to 9. An interference measurement device, characterized in that it comprises: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the method described in any one of claims 10 to 18. A non-temporary computer-readable storage medium, characterized in that when the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the method described in any one of claims 1 to 9. A non-transitory computer-readable storage medium, characterized in that when the instructions in the storage medium are transmitted by a network When executed by a processor of a network device, the network device is enabled to execute the method described in any one of claims 10 to 18.