WO2024077454A1 - Shared carrier interference handling method and device - Google Patents

Abstract

Embodiments of the present invention disclose a shared carrier interference handling method and device, which can be applied to the technical field of communications. The method, executed by a first terminal device, comprises: when first transmission and second transmission of the first terminal device use the same carrier, performing the first transmission after sending uplink data of the second transmission on the carrier, wherein the first transmission is data transmission performed by the first terminal device and a second terminal device by means of a PC5 interface, and the second transmission is data transmission performed by the first terminal device and a network device by means of a Uu interface. Therefore, interference can be avoided, the coexistence performance between systems can be effectively ensured, and the communication quality can be guaranteed.

Description

Interference processing method and device for shared carrier Technical Field

The present disclosure relates to the field of communication technology, and in particular to a method and device for processing interference of a shared carrier.

Background technique

In the related technology, the first terminal device supports data transmission with the second terminal device through the Pc5 interface, and also supports data transmission with the network device through the Uu interface, wherein the first transmission of the first terminal device (data transmission with the second terminal device through the Pc5 interface) and the second transmission (data transmission with the network device through the Uu interface) can use the same carrier.

However, on this carrier, the uplink data of the second transmission sent by the first terminal device will interfere with the first transmission, which is a problem that needs to be solved urgently.

Summary of the invention

The embodiments of the present disclosure provide a method and device for handling interference of a shared carrier, which can avoid interference, effectively ensure the coexistence performance between different systems, and ensure the communication quality.

In a first aspect, an embodiment of the present disclosure provides an interference processing method for a shared carrier, which is executed by a first terminal device, and the method includes: when a first transmission and a second transmission of the first terminal device use the same carrier, performing the first transmission after sending the uplink data of the second transmission on the carrier; wherein the first transmission is data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is data transmission between the first terminal device and the network device through the Uu interface.

In this technical solution, when the first transmission and the second transmission of the first terminal device use the same carrier, the first transmission is performed after the uplink data of the second transmission is sent on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In a second aspect, an embodiment of the present disclosure provides another interference processing method for a shared carrier, which is executed by a first terminal device, and the method includes: when a first transmission and a second transmission of the first terminal device use the same carrier, sending uplink data of the second transmission after the first transmission on the carrier; wherein the first transmission is data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is data transmission between the first terminal device and the network device through the Uu interface.

In a third aspect, an embodiment of the present disclosure provides another interference processing method for a shared carrier, which is executed by a network device, and the method includes: sending first configuration information to a first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform a first transmission after sending uplink data of the second transmission on the carrier; or, sending second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of the second transmission after performing the first transmission on the carrier; wherein the first transmission is data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is data transmission between the first terminal device and the network device through the Uu interface; and the first terminal device uses the carrier to perform the first transmission and the second transmission.

In a fourth aspect, an embodiment of the present disclosure provides a communication device, which has some or all of the functions of the terminal device in the method described in the first aspect above. For example, the functions of the communication device may have some or all of the functions in the embodiments of the present disclosure, or may have the functions of implementing any one of the embodiments of the present disclosure alone. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device includes: a transceiver module, which is configured to perform a first transmission after sending the uplink data of the second transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

In a fifth aspect, an embodiment of the present disclosure provides another communication device, which has some or all of the functions of the first terminal device in the method example described in the second aspect above. For example, the functions of the communication device may have some or all of the functions in the embodiments of the present disclosure, or may have the functions of implementing any one of the embodiments of the present disclosure alone. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device includes: a transceiver module, which is configured to send uplink data of the second transmission after the first transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

In a sixth aspect, an embodiment of the present disclosure provides another communication device, which has some or all of the functions of the network device in the method example described in the third aspect above, such as the functions of the communication device can have some or all of the functions in the embodiments of the present disclosure, or can have the functions of implementing any one of the embodiments of the present disclosure alone. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device includes: a transceiver module, configured to send first configuration information to a first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform a first transmission after sending uplink data of a second transmission on a carrier; or, to send second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of the second transmission after performing the first transmission on the carrier; wherein the first transmission is data transmission between the first terminal device and the second terminal device via a Pc5 interface; the second transmission is data transmission between the first terminal device and a network device via a Uu interface; and the first terminal device uses the carrier for the first transmission and the second transmission.

In a seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first aspect is executed.

In an eighth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the second aspect is executed.

In a ninth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the third aspect is executed.

In the tenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first aspect above.

In the eleventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the second aspect above.

In the twelfth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the third aspect above.

In a thirteenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the first aspect above.

In a fourteenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

In a fifteenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the third aspect above.

In the sixteenth aspect, an embodiment of the present disclosure provides an interference processing system for a shared carrier, the system comprising the communication device described in the fourth aspect or the communication device described in the fifth aspect, and the communication device described in the sixth aspect, or the system comprising the communication device described in the seventh aspect or the communication device described in the eighth aspect, and the communication device described in the ninth aspect, or the system comprising the communication device described in the tenth aspect or the communication device described in the eleventh aspect, and the communication device described in the twelfth aspect, or the system comprising the communication device described in the thirteenth aspect or the communication device described in the fourteenth aspect, and the communication device described in the fifteenth aspect.

In the seventeenth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned first terminal device, and when the instructions are executed, the first terminal device executes the method described in the above-mentioned first aspect.

In an eighteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions for the first terminal device mentioned above, and when the instructions are executed, the first terminal device executes the method described in the second aspect mentioned above.

In the nineteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions used by the above-mentioned network device. When the instructions are executed, the network device executes the method described in the third aspect.

In a twentieth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

In a twenty-first aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

In the twenty-second aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the third aspect above.

In a twenty-third aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, and is used to support a first terminal device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, and the memory is used to store computer programs and data necessary for the first terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

In a twenty-fourth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, and is used to support a first terminal device to implement the functions involved in the second aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, and the memory is used to store computer programs and data necessary for the first terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

In the twenty-fifth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, and is used to support the network device to implement the functions involved in the third aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, and the memory is used to store computer programs and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

In a twenty-sixth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the first aspect.

In a twenty-seventh aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect.

In a twenty-eighth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the third aspect above.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

FIG1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

FIG2 is a schematic diagram of a first transmission and a second transmission working scenario provided by an embodiment of the present disclosure;

FIG3 is a schematic diagram of the timing of a first transmission and a second transmission provided by an embodiment of the present disclosure;

FIG4 is a schematic diagram of a method in which sending uplink data of a first transmission interferes with receiving a second transmission provided by an embodiment of the present disclosure;

FIG5 is a flow chart of a method for handling interference of a shared carrier provided by an embodiment of the present disclosure;

6 is a schematic diagram of sending uplink data of a first transmission without interfering with reception of a second transmission provided by an embodiment of the present disclosure;

FIG7 is a flowchart of another method for handling interference of a shared carrier provided in an embodiment of the present disclosure;

FIG8 is a flowchart of another method for handling interference of a shared carrier provided in an embodiment of the present disclosure;

FIG9 is a flowchart of another method for processing interference of a shared carrier provided in an embodiment of the present disclosure;

FIG10 is a flowchart of another method for handling interference of a shared carrier provided in an embodiment of the present disclosure;

FIG11 is a flowchart of another method for handling interference of a shared carrier provided in an embodiment of the present disclosure;

FIG12 is a flowchart of another method for processing interference of a shared carrier provided in an embodiment of the present disclosure;

13 is a flowchart of a method for determining a transmission timing difference between a first transmission and a second transmission provided by an embodiment of the present disclosure;

14 is a flowchart of a method for determining a protection interval of a first transmission provided by an embodiment of the present disclosure;

15 is a flowchart of a method for acquiring a first starting position time slot for a first transmission on a carrier provided by an embodiment of the present disclosure;

16 is a flowchart of a method for acquiring a second starting position time slot for sending a second transmission on a carrier provided by an embodiment of the present disclosure;

17 is a flowchart of a method for acquiring a first transmission duration for sending a second transmission on a carrier provided by an embodiment of the present disclosure;

FIG18 is a flowchart of a method for acquiring a second transmission duration for performing a first transmission on a carrier provided by an embodiment of the present disclosure;

FIG19 is a structural diagram of a communication device provided in an embodiment of the present disclosure;

FIG20 is a structural diagram of another communication device provided in an embodiment of the present disclosure;

FIG. 21 is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.

Detailed ways

In order to better understand the interference processing method and device for a shared carrier disclosed in the embodiment of the present disclosure, the communication system to which the embodiment of the present disclosure is applicable is first described below.

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. Unless otherwise indicated, when the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms "a", "the" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and/or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, for example, the word "if" used herein may be interpreted as "at the time of" or "when" or "in response to determining".

It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this disclosure are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

In addition, in order to facilitate understanding of the embodiments of the present disclosure, the following points are explained.

First, in the embodiments of the present disclosure, "used to indicate" may include being used to indicate directly or indirectly. When describing that a certain information is used to indicate A, it may include that the information directly indicates A or indirectly indicates A, but it does not mean that the information must carry A.

The information indicated by the information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (such as specified by the protocol), thereby reducing the indication overhead to a certain extent.

The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and/or sending time of these sub-information can be the same or different. The specific sending method is not limited in this disclosure. Among them, the sending period and/or sending time of these sub-information can be pre-defined, for example, pre-defined according to a protocol.

Second, in the present disclosure, the first and second are only distinguished for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, for example, to distinguish different signaling, to distinguish different information, etc.

Third, the “protocol” involved in the embodiments of the present disclosure may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, a NR protocol, a WLAN protocol, and related protocols in other communication systems, which is not limited in the present disclosure.

Fourth, the embodiments of the present disclosure list multiple implementation methods to clearly illustrate the technical solutions of the embodiments of the present disclosure. Of course, those skilled in the art can understand that the multiple embodiments provided by the embodiments of the present disclosure can be executed separately, or can be executed together with the methods of other embodiments of the embodiments of the present disclosure, or can be executed together with some methods in other related technologies separately or in combination; the embodiments of the present disclosure do not limit this.

Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. The communication system may include but is not limited to at least one network device 101 and at least one terminal device 102. It should be noted that the present application does not limit the number and form of devices.

It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as long term evolution (LTE) system, fifth generation (5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems.

The network device 101 in the embodiment of the present disclosure may include an entity for transmitting or receiving signals on the network side. For example, the network device 101 may include an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the base station. The base station provided in the embodiment of the present disclosure may be composed of a central unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the base station, such as the protocol layer of the base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

The terminal device 102 in the disclosed embodiment may be an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), a user equipment (UE), a mobile station (MS), a mobile terminal device (MT), etc. The terminal device may be a car with communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal device.

It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

In the related technology, the terminal device can support V2X communication, such as receiving or sending V2X messages. In this case, the terminal can also be called a V2X terminal. Among them, V2X messages can include but are not limited to vehicle to vehicle (V2V) messages, vehicle to person (V2P) messages, vehicle to network (V2N) messages, vehicle to infrastructure (V2I) information, collision avoidance messages between vehicles, entertainment application messages, navigation messages for interaction between vehicles, etc.

As shown in Figure 2, in an embodiment of the present disclosure, a first terminal device (e.g., UE1) supporting V2X communication can perform a second transmission with a network device (e.g., BS, base station), including uplink (UL) transmission and downlink (DL) transmission, and can also perform a first transmission (side link, SL) transmission with a second terminal device (e.g., UE2).

Among them, when NR (new radio) V2X (first transmission) and NR Uu use the same carrier (coexist in the same authorized frequency band), the first terminal device communicates with both the network device (through Uu) and the second terminal device (through PC5) on the carrier. However, the uplink transmission of the second transmission sent by the first terminal device on the carrier will interfere with the first transmission. This is a problem that needs to be solved urgently.

In the embodiment of the present disclosure, the first transmission of the first terminal device is data transmission between the first terminal device and the second terminal device via the PC5 interface, and the second transmission of the first terminal device is data transmission between the first terminal device and the network device via the Uu interface. When the first transmission and the second transmission of the first terminal device use the same carrier, on the carrier, the uplink data of the second transmission sent by the first terminal device will interfere with the first transmission.

Based on this, in an embodiment of the present disclosure, a method for handling interference of a shared carrier is provided, where when a first transmission and a second transmission of a first terminal device use the same carrier, the first transmission is performed after uplink data of the second transmission is sent on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

A method and device for handling interference of a shared carrier provided by the present disclosure are described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 3 , which is a flow chart of a method for handling interference of a shared carrier provided in an embodiment of the present disclosure.

As shown in FIG3 , the method is executed by the first terminal device, and the method may include but is not limited to the following steps:

S31: When the first transmission and the second transmission of the first terminal device use the same carrier, the first transmission is performed after sending the uplink data of the second transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

In the embodiment of the present disclosure, the first transmission and the second transmission of the first terminal device use the same carrier, and the first terminal device can perform the first transmission and the second transmission simultaneously on the carrier.

The first transmission and the second transmission of the first terminal device use the same carrier, which can be the same carrier in the TDD (time division duplex) frequency band.

Among them, the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface, including sending data to the second terminal device through the Pc5 interface, and receiving data sent by the second terminal device through the Pc5 interface.

Among them, the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

In the embodiment of the present disclosure, when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device can avoid interference of the first transmission on the second transmission by performing the first transmission after sending the uplink data of the second transmission on the carrier, thereby effectively ensuring the performance of coexistence between different systems and ensuring the communication quality.

In an embodiment of the present disclosure, the first terminal device may determine based on implementation that when the first transmission and the second transmission use the same carrier, the first transmission is performed after the uplink data of the second transmission is sent on the carrier, or the first terminal device may determine based on a network device indication that when the first transmission and the second transmission use the same carrier, the first transmission is performed after the uplink data of the second transmission is sent on the carrier, or the first terminal device may determine based on a protocol agreement that when the first transmission and the second transmission use the same carrier, the first transmission is performed after the uplink data of the second transmission is sent on the carrier.

In some embodiments, the first terminal device receives first configuration information sent by the network device, wherein the first configuration information is used to instruct the first terminal device to perform a first transmission after sending uplink data of a second transmission on a carrier.

In the embodiment of the present disclosure, the first terminal device may receive the first configuration information sent by the network device, and in the case where the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the carrier, it is determined that when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier. In this way, the interference of sending the uplink data of the second transmission on the first transmission can be avoided, and the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

It is understandable that in Release 16 (Rel-16) NR V2X, the transmission timing advance (TA) of the first terminal device is specified to be 0, that is, the transmission timing of the first transmission of the first terminal device is synchronized with the downlink of the second transmission, rather than with the uplink of the second transmission, as shown in Figure 4. When the first transmission and the second transmission use the same carrier, the transmission timing of the two cannot be synchronized, that is, there is a transmission time difference. This transmission time difference will cause the first terminal device to send the uplink data of the second transmission to interfere with the first terminal device's reception of the first transmission. In Rel-16, there is no scenario in which the first transmission and the second transmission use the same carrier, so this interference phenomenon will not occur.

However, in version 17 (Rel-17), it is proposed to define a scenario in which the first transmission and the second transmission use the same carrier. If only the design of the transmission time advance of the first transmission in Rel-16 is used, it is inevitable that the uplink transmission of the second transmission by the first terminal device will interfere with the reception of the first transmission by the first terminal device.

In the Rel-16NR, it is stipulated that for the TDD frequency band, when the first terminal device performs the first transmission and the second transmission share the same carrier, the uplink time slot of the first terminal device performing the second transmission is used for the first terminal device to transmit and/or receive the first transmission, but the time sequence of the first terminal device transmitting or receiving signals in the first transmission and the second transmission is not limited. When the first terminal device performs the first transmission and the second transmission share the same carrier and the uplink transmission of the second transmission occurs in the next time slot immediately adjacent to the reception of the first transmission, the time slot overlap occurs due to the asynchronous transmission timing of the two (as shown in the shaded part of Figure 5). In this overlapping part, the uplink data of the second transmission sent by the first terminal device will be leaked to the first terminal device receiving the first transmission in the previous time slot, thereby affecting the reception performance of the first terminal device performing the first transmission.

In one possible implementation, the first terminal device uses the last symbol of its time slot for the first transmission as a guard period (GP), which can eliminate the interference in some cases, that is, when the transmission timing difference TA difference between the first transmission and the second transmission by the first terminal device is not greater than the length of one symbol of the first transmission.

However, when the protection interval of the first transmission is smaller than the transmission timing difference TA difference between the second transmission and the first transmission, the interference cannot be avoided. The embodiment of the present disclosure will mainly propose a method for avoiding the interference caused by the transmission timing difference between the first transmission and the second transmission to solve this problem.

It is understandable that, by merely using the last symbol of each time slot of the first transmission as a guard interval to avoid partial interference, when the guard interval of the first transmission is smaller than the transmission timing difference between the second transmission and the first transmission, the interference cannot be completely eliminated.

For example, NR V2X has three subcarrier spacings (SCS) in low frequency FR1, namely 15kHz, 30kHz and 60kHz, and the corresponding symbol lengths are shown in Table 1 below:

NR V2X SCS(KHz) Each symbol length (μs) 15 71.35 30 35.68 60 17.84

Table 1

Rel-16 stipulates that the transmission time advance of the first transmission is synchronized with the downlink timing of the second transmission, but does not consider the scenario where the first transmission and the second transmission share the same carrier in the same authorized frequency band. When the first terminal device performs the first transmission in this scenario, since the transmission time advance cannot be synchronized, the uplink transmission signal of the second transmission will interfere with the reception of the first transmission.

In a possible implementation, the last symbol of each time slot of the first transmission is used as a guard interval to eliminate some interference. However, according to the above analysis, a guard interval of one symbol cannot completely eliminate the interference caused by the transmission timing difference, especially in cells with a larger radius.

The uplink timing advance TA satisfies the relationship: TA=N _TA +N _{TA offset} .

When the second transmission and the first transmission share the same carrier in the same authorized frequency band, the N _{TA offset} of the first transmission is the same as that of the second transmission. Therefore, the transmission timing difference TA difference between the first transmission and the second transmission is N _TA , which is twice the propagation delay (propagation delay from the terminal to the base station), which is determined by the cell radius.

Exemplarily, assuming that the cell radius is 15 km, the transmission timing difference TA difference between NR V2X and NR Uu satisfies the relationship: N _TA = (2*15*103/3*10^8)*106μs = 100μs.

The transmission timing difference is much larger than the minimum symbol length of NR V2X (17.84us). Therefore, the interference cannot be completely eliminated in cells with a larger radius, and the receiving performance of the first transmission will inevitably be affected by the uplink transmission of the second transmission.

Based on this, in the embodiment of the present disclosure, when the first transmission and the second transmission use the same carrier, the first terminal device can judge the transmission timing difference between the first transmission and the second transmission and the size of the protection interval of the first transmission. When it is judged that the transmission timing difference is less than the protection interval, the first transmission and the second transmission can be carried out normally; when it is judged that the transmission timing difference is greater than or equal to the protection interval, the first transmission can be carried out after the uplink data of the second transmission is sent on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Exemplarily, as shown in FIG6 , there is a transmission timing difference TA difference between sending the uplink data of the second transmission and transmitting and/or receiving the first transmission, and the reception of the first transmission (slot#3) occurs after sending the uplink data of the second transmission (slot#0, slot#1, slot#2). Therefore, the interference of the uplink transmission of the second transmission on the reception of the first transmission caused by the transmission timing difference between the first transmission and the second transmission can be effectively avoided.

In some embodiments, when a first transmission and a second transmission of a first terminal device use the same carrier and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, the first transmission is performed after the uplink data of the second transmission is sent on the carrier.

In an embodiment of the present disclosure, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission, and the protection interval of the first transmission when the first transmission and the second transmission of the first terminal device use the same carrier; when the transmission timing difference is greater than or equal to the protection interval, the first transmission is performed after sending the uplink data of the second transmission on the carrier.

Among them, the first terminal device can directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on implementation, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on network device instructions, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on protocol agreements.

It can be understood that the uplink timing advance TA of the first terminal device in the second transmission satisfies the relationship: TA=N _TA +N _{TA offset} , where _{N TA} is twice the propagation delay between the first terminal device and the network device.

When the first transmission and the second transmission use the same carrier, the transmission time advance TA of the first terminal device in the first transmission is N _{TA offset} , and N _{TA offset} is the same as N _{TA offset} in the second transmission. Therefore, the transmission timing difference TA difference between the first transmission and the second transmission is N _TA , that is, twice the propagation delay between the first terminal device and the network device, which can be understood as the uplink propagation delay from the first terminal device to the network device plus the downlink propagation delay from the network device to the first terminal device. Among them, N _TA can be determined by the cell radius size.

Exemplarily, assuming that the cell radius is 15 km, the transmission timing difference TA difference between the first transmission and the second transmission satisfies the relationship: N _TA =(2*15*10 3 /3*10^8)*10 6 μs=100 μs.

In the embodiments of the present disclosure, the first terminal device may determine the propagation delay between the first terminal device and the network device based on implementation, or may determine the propagation delay between the first terminal device and the network device based on an indication of the network device, or may determine the propagation delay between the first terminal device and the network device based on a protocol agreement, and then, based on the determined propagation delay between the first terminal device and the network device, determine a transmission timing difference that is twice the propagation delay between the first terminal device and the network device.

In some embodiments, the first terminal device receives first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In the embodiment of the present disclosure, the first terminal device can receive first indication information sent by the network device, and when the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the transmission timing difference between the first transmission and the second transmission can be determined.

It should be noted that the first indication information may directly indicate the transmission timing difference between the first transmission and the second transmission, or may also indicate a parameter that can be used to determine the transmission timing difference between the first transmission and the second transmission. By way of example, the first indication information indicates the propagation delay between the first terminal device and the network device, and the embodiments of the present disclosure do not impose any specific restrictions on this.

Among them, the first terminal device can directly or indirectly determine the protection interval of the first transmission based on implementation, or can also directly or indirectly determine the protection interval of the first transmission based on network device instructions, or can also directly or indirectly determine the protection interval of the first transmission based on protocol agreements.

The protection interval of the first transmission is a symbol length in the time slot.

Exemplarily, the first transmission has three subcarrier spacings (SCS) in the low frequency FR1, namely 15kHz, 30kHz and 60kHz, and the corresponding symbol lengths of each are shown in Table 1 above.

Among them, when the subcarrier spacing of the first transmission is 15kHz, the guard interval is 71.35us; when the subcarrier spacing of the first transmission is 30kHz, the guard interval is 35.68us; when the subcarrier spacing of the first transmission is 60kHz, the guard interval is 17.84us.

In the embodiment of the present disclosure, the first terminal device may determine the subcarrier spacing of the first transmission based on implementation, or may determine the subcarrier spacing of the first transmission based on an indication of a network device, or may determine the subcarrier spacing of the first transmission based on a protocol agreement, and then determine the protection interval of the first transmission based on the determined subcarrier spacing of the first transmission.

In some embodiments, the first terminal device receives second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In the embodiment of the present disclosure, the first terminal device can receive the second indication information sent by the network device, and when the second indication information indicates the protection interval of the first transmission, the protection interval of the first transmission can be determined.

It should be noted that the second indication information may directly indicate the protection interval, or may also indicate a parameter that can be used to determine the protection interval. Exemplarily, the second indication information indicates the subcarrier spacing of the first transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

In the disclosed embodiment, resource allocation:

In sidelink resource allocation mode 1:

For PSSCH (physical sidelink shared channel) and PSCCH (physical sidelink control channel) transmissions, dynamic grants, configured grant type 1 and configured grant type 2 are supported. Configured grant type 2 sidelink transmissions are semi-persistently scheduled by SL grants in valid activation DCI (downlink control information).

Among them, resource allocation in time domain

The UE shall transmit the PSSCH in the same slot as the associated PSCCH.

The minimum resource allocation unit in the time domain is a slot.

The UE shall transmit the PSSCH in consecutive symbols within the slot, subject to the following restrictions:

The UE shall not transmit PSSCH in symbols which are not configured for sidelink.A symbol is configured for sidelink, according to higher layer parameters sl-StartSymbol and sl-LengthSymbols,where sl-StartSymbol is the symbol index of the first symbol of sl-LengthSymbols consecutive symbols configured for sidelink.

Within the slot, PSSCH resource allocation starts at symbol sl-StartSymbol+1.

The UE shall not transmit PSSCH in symbols which are configured for use by PSFCH, if PSFCH is configured in this slot.

The UE shall not transmit PSSCH in the last symbol configured for sidelink.

The UE shall not transmit PSSCH in the symbol immediately preceding the symbols which are configured for use by PSFCH, if PSFCH is configured in this slot.

In sidelink resource allocation mode 1:

For sidelink dynamic grant, the PSSCH transmission is scheduled by a DCI format 3_0.

For sidelink configured grant type 2, the configured grant is activated by a DCI format 3_0.

For sidelink dynamic grant and sidelink configured grant type 2:

The "Time gap" field value m of the DCI format 3_0 provides an index m+1 into a slot offset table. That table is given by higher layer parameter sl-DCI-ToSL-Trans and the table value at index m+1 will be referred to as slot offset K _SL . (The "Time gap" field value m of the DCI format 3_0 provides an index m+1 into a slot offset table. That table is given by higher layer parameter sl-DCI-ToSL-Trans and the table value at index m+1 will be referred to as slot offset K _SL .)

启动的第一个SL时隙，其中T _DL是承载相应DCI的下行链路时隙的开始时间，T _TA是与接收DCI的服务单元的TAG对应的定时提前值，是DCI的时隙与调度的第一个侧链路传输之间的时隙偏移由DCI和T _slot是SL时隙持续时间。(The slot of the first sidelink transmission scheduled by the DCI is the first SL slot of the corresponding resource pool that starts not earlier than

where T _DL is the starting time of the downlink slot carrying the corresponding DCI,T _TA is the timing advance value corresponding to the TAG of the serving cell on which the DCI is received and K _SL is the slot offset between the slot of the DCI and the first sidelink transmission scheduled by DCI and T _slot is the SL slot duration.) The time slot for the first sidelink transmission scheduled by the DCI is the time slot in the corresponding resource pool that is no earlier than

_The slot of the first sidelink transmission scheduled by the DCI is the first SL _slot of the corresponding resource pool _that starts not earlier than

where T _DL is the starting time of the downlink slot carrying the corresponding DCI, T _TA is the timing advance value corresponding to the TAG of the serving cell on which the DCI is received and K _SL is the slot offset between the slot of the DCI and the first sidelink transmission scheduled by DCI and T _slot is the SL slot duration.)

The "Configuration index" field of the DCI format 3_0, if provided and not reserved, indicates the index of the sidelink configured type 2.

For sidelink configured grant type 1:

The slot of the first sidelink transmissions follows the higher layer configuration.

In some embodiments, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier, including:

The first transmission is performed after the last time slot in which uplink data of the second transmission is sent on the carrier.

In the embodiment of the present disclosure, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier, and may perform the first transmission after the last time slot of sending the uplink data of the second transmission on the carrier.

It can be understood that the first terminal device can make the first time slot for the first transmission on the carrier be located after the last time slot for sending the uplink data of the second transmission on the carrier, thereby realizing the first transmission after the last time slot for sending the uplink data of the second transmission on the carrier.

In the embodiment of the present disclosure, in order to implement the first transmission after the last time slot of uplink data of the second transmission is sent on the carrier, the first terminal device can obtain the first starting position time slot for the first transmission on the carrier, and obtain the second starting position time slot for sending the second transmission on the carrier and the first transmission duration. When the first starting position time slot is greater than or equal to the sum of the second starting position time slot and the first transmission duration, the second transmission is sent on the carrier and the first transmission is performed according to the first starting position time slot, the second starting position time slot and the first transmission duration, so as to implement the first transmission after the last time slot of uplink data of the second transmission is sent on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In some embodiments, the first terminal device performs a first transmission after the last time slot for sending uplink data of the second transmission on the carrier, including: determining that a first starting position time slot for the first transmission on the carrier is greater than or equal to the sum of a second starting position time slot for sending uplink data of the second transmission on the carrier and a first transmission duration for sending uplink data of the second transmission on the carrier.

In the embodiment of the present disclosure, the first starting position time slot of the first transmission performed by the first terminal device on the carrier can be referred to as the first parameter; the second starting position time slot of the uplink data of the second transmission sent by the first terminal device on the carrier can be referred to as the second parameter; the first transmission duration of the uplink data of the second transmission sent by the first terminal device on the carrier can be referred to as the third parameter. Among them, the first parameter, the second parameter and the third parameter satisfy the first relationship, and the first relationship is that the first parameter is greater than or equal to the sum of the second parameter and the third parameter.

The first terminal device may determine the other one of the first parameter, the second parameter and the third parameter according to any two of the first parameter, the second parameter and the third parameter and the first relationship.

Exemplarily, the first terminal device may determine the third parameter according to the first parameter, the second parameter and the first relationship.

Exemplarily, the first terminal device may determine the first parameter according to the second parameter, the third parameter and the first relationship.

In the embodiments of the present disclosure, the first terminal device may directly or indirectly determine the first starting position time slot for the first transmission on the carrier based on implementation, or may directly or indirectly determine the first starting position time slot for the first transmission on the carrier based on an indication of a network device, or may directly or indirectly determine the first starting position time slot for the first transmission on the carrier based on a protocol agreement, thereby obtaining the first starting position time slot for the first transmission on the carrier.

In the embodiments of the present disclosure, the first terminal device may directly or indirectly determine the second starting position time slot for sending the second transmission on the carrier based on implementation, or may directly or indirectly determine the second starting position time slot for sending the second transmission on the carrier based on a network device indication, or may directly or indirectly determine the second starting position time slot for sending the second transmission on the carrier based on a protocol agreement, thereby obtaining the second starting position time slot for sending the second transmission on the carrier.

In the embodiments of the present disclosure, the first terminal device may directly or indirectly determine the first transmission duration of the uplink data of the second transmission on the carrier based on implementation, or may directly or indirectly determine the first transmission duration of the uplink data of the second transmission on the carrier based on an indication of a network device, or may directly or indirectly determine the first transmission duration of the uplink data of the second transmission on the carrier based on a protocol agreement, thereby obtaining the first transmission duration of the uplink data of the second transmission on the carrier.

It is understandable that NR V2X (first transmission) has two working modes, namely Mode 1 and Mode 2. When the first terminal device in NR V2X works in Mode 1, SL resources are scheduled through the network device. When the first terminal device in NR V2X works in Mode 2, the first terminal device automatically selects SL transmission resources, but Mode 2 can only be used on the V2X dedicated frequency band.

Among them, V2X high-level parameters:

sl-DCI-ToSL-Trans

Indicate the time gap between DCI reception and the first sidelink transmission scheduled by the DCI. Value 1 included in this field corresponds to 1 slot, value 2 corresponds to 2 slots and so on, based on the numerology of sidelink BWP.

In NR V2X (first transmission), there is a high-level configuration parameter sl-DCI-ToSL-Trans related to time domain resource allocation, which is used to indicate the time interval (time gap) between DCI reception and the first sidelink SL transmission, and the starting position time slot T _sl-startslot of Sidelink transmission (the first starting position time slot for the first transmission on the carrier) can be obtained.

Uu high-level parameters:

pusch-TimeDomainAllocationList

List of time domain allocations for timing of UL assignment to UL data.

The field pusch-TimeDomainAllocationList applies to DCI format 0_0 or DCI format 0_1 when the field pusch-TimeDomainAllocationListDCI-0-1 is used. The network shall not configure pusch-TimeDomainAllocationList (without suffix) at the same time as pusch-TimeDomainAllocationListDCI-0-2-r16 or pusch-TimeDomainAllocationListDCI-0-1-r16 or pusch-TimeDomainAllocationListForMultiPUSCH-r16. (The field pusch TimeDomainAllocationList applies to DCI formats 0_0 or DCI format 0_1 when the field pusch-TimeDomainAllocationListDCI-0-1 is not configured. The network does not configure the pusch-TimeDomainAllocationList(without suffix) simultaneously with the pusch-TimeDomainAllocationListDCI-0-2-r16 or pusch-TimeDomainAllocationListDCI-0-1-r16 or pusch-TimeDomainAllocationListForMultiPUSCH-r16.)

pusch-TimeDomainAllocationListDCI-0-1

Configuration of the time domain resource allocation (TDRA) table for DCI format 0_1.

pusch-TimeDomainAllocationListDCI-0-2

Configuration of the time domain resource allocation (TDRA) table for DCI format 0_2.

pusch-TimeDomainAllocationListForMultiPUSCH

Configuration of the time domain resource allocation (TDRA) table for multiple PUSCH. The network configures at most 16 rows in this TDRA table in PUSCH-TimeDomainResourceAllocationList-r16 configured by this field. This field is not configured simultaneously with pusch-AggregationFactor.

There is a high-level configuration parameter pusch-TimeDomainAllocationList related to time domain resource allocation in NR Uu (second transmission), which is used to indicate the time domain configuration of PUSCH (Physical Uplink Shared Channel) uplink transmission. The starting position time slot T _uu-startslot (the second starting position time slot for sending the uplink data of the second transmission on the carrier) and the transmission duration L _{uu-translength} (the first transmission duration for sending the uplink data of the second transmission on the carrier) of PUSCH transmission can be obtained.

In the disclosed embodiment, the network device is configured or the first terminal device is preconfigured so that T _sl-startslot ≥T _uu-startslot +L _{uu-translength} , thereby ensuring that the transmission and/or reception of the first transmission occurs after the last uplink transmission timeslot for sending uplink data of the second transmission.

Among them, the first terminal device can obtain the first starting position time slot T _sl-startslot for the first transmission on the carrier, obtain the second starting position time slot T _uu-startslot for sending the uplink data of the second transmission on the carrier, and the first transmission duration L _{uu-translength for} sending the uplink data of the second transmission on the carrier, and when T _sl-startslot ≥T _uu-startslot +L _{uu-translength} , according to the first starting position time slot, the second starting position time slot and the first transmission duration, send the uplink data of the second transmission on the carrier and perform the first transmission, so as to realize the first transmission after the last time slot for sending the uplink data of the second transmission on the carrier. In this way, interference can be avoided, the performance of coexistence between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In the embodiment of the present disclosure, the first terminal device may determine the first starting position time slot for the first transmission on the carrier based on implementation, or may determine the first starting position time slot for the first transmission on the carrier based on a network device indication, or may determine the first starting position time slot for the first transmission on the carrier based on a protocol agreement.

In some embodiments, a first terminal device obtains a first starting position time slot for a first transmission on a carrier, including: the first terminal device receives third indication information sent by a network device, wherein the third indication information is used to indicate the first starting position time slot for the first transmission on the carrier; and according to the third indication information, determines the first starting position time slot for the first transmission on the carrier.

In an embodiment of the present disclosure, when a first terminal device receives third indication information sent by a network device, and the third indication information indicates a first starting position time slot for a first transmission on a carrier, the first terminal device can obtain the first starting position time slot for the first transmission on the carrier according to the third indication information.

It should be noted that the third indication information may directly indicate the first starting position time slot for the first transmission on the carrier, or may also indicate parameters that can be used to determine the first starting position time slot for the first transmission on the carrier. Exemplarily, the third indication information indicates the time interval between DCI reception and the first side link transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the third indication information may be a high-layer configuration parameter sl-DCI-ToSL-Trans, which is used to indicate the time interval between DCI reception and the first sidelink transmission, and to obtain the first starting position time slot T _sl-startslot for the first transmission on the carrier.

In the embodiment of the present disclosure, the first terminal device may determine the second starting position time slot for sending the second transmitted uplink data on the carrier based on implementation, or may also determine the second starting position time slot for sending the second transmitted uplink data on the carrier based on a network device indication, or may also determine the second starting position time slot for sending the second transmitted uplink data on the carrier based on a protocol agreement.

In some embodiments, the first terminal device obtains the second starting position time slot for sending the second transmitted uplink data on the carrier, including: the first terminal device receives fourth indication information sent by the network device, wherein the fourth indication information is used to indicate the second starting position time slot for sending the second transmitted uplink data on the carrier; according to the fourth indication information, obtains the second starting position time slot for sending the second transmitted uplink data on the carrier.

In an embodiment of the present disclosure, when a first terminal device receives fourth indication information sent by a network device, and the fourth indication information indicates a second starting position time slot for sending uplink data of a second transmission on a carrier, the first terminal device can obtain the second starting position time slot for sending uplink data of the second transmission on the carrier according to the fourth indication information.

It should be noted that the fourth indication information may directly indicate the second starting position time slot for sending the second transmitted uplink data on the carrier, or may also indicate parameters that can be used to determine the second starting position time slot for sending the second transmitted uplink data on the carrier. Exemplarily, the fourth indication information indicates the time domain configuration of the PUSCH uplink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the fourth indication information may be a high-layer configuration parameter pusch-TimeDomainAllocationList, which is used to indicate the time domain configuration of PUSCH uplink transmission, and may obtain a second starting position time slot T _uu-startslot for sending second transmitted uplink data on a carrier.

In the embodiment of the present disclosure, the first terminal device may determine the first transmission duration for sending the second transmission on the carrier based on implementation, or may also determine the first transmission duration for sending the uplink data of the second transmission on the carrier based on an indication of a network device, or may also determine the first transmission duration for sending the uplink data of the second transmission on the carrier based on a protocol agreement.

In some embodiments, a first terminal device obtains a first transmission duration for sending uplink data of a second transmission on a carrier, including: the first terminal device receives fifth indication information sent by a network device, wherein the fifth indication information is used to indicate a first transmission duration for sending uplink data of the second transmission on a carrier; and according to the fifth indication information, obtains a first transmission duration for sending uplink data of the second transmission on a carrier.

In an embodiment of the present disclosure, when a first terminal device receives fifth indication information sent by a network device, and the fifth indication information indicates a first transmission duration for sending uplink data of a second transmission on a carrier, the first terminal device can obtain the first transmission duration for sending the second transmission on the carrier based on the fifth indication information.

It should be noted that the fifth indication information may directly indicate the first transmission duration of the uplink data of the second transmission sent on the carrier, or may also indicate a parameter that can be used to determine the first transmission duration of the uplink data of the second transmission sent on the carrier. Exemplarily, the fifth indication information indicates the time domain configuration of the PUSCH uplink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the fifth indication information may be a higher layer configuration parameter pusch-TimeDomainAllocationList, which is used to indicate the time domain configuration of PUSCH uplink transmission, and may obtain a first transmission duration Luu _-translength for sending second transmission uplink data on a carrier.

Through the above analysis, for the scenario where NR V2X (first transmission) and NR Uu (second transmission) use the same carrier in the TDD frequency band, a solution as shown in Figure 7 is proposed:

1. Determine whether the first transmission and the second transmission use the same carrier in the TDD frequency band?

2. When it is determined that the first transmission and the second transmission use the same carrier in the TDD frequency band, determine whether the transmission timing difference TA difference between the first transmission and the second transmission is greater than one symbol length of the first transmission?

3. When it is determined that TA difference>1 NR V2X symbol length, the first starting position time slot T _sl-startslo t of the first transmission is ≥ the second starting position time slot T _uu-startslot of the second transmission + the first transmission duration L _{uu-translength} of the second transmission through network device configuration or pre-configuration of the first terminal device, thereby ensuring that the first transmission (transmission and/or reception) occurs after the last time slot of sending the second transmission.

4. When it is determined that the first transmission and the second transmission do not use the same carrier in the TDD frequency band, the first transmission and the second transmission proceed normally, and the network device does not need the configuration in step 3 or the first terminal device does not need the configuration in step 3. Also, when it is determined that the TA difference is not greater than the length of 1 NR V2X symbol, the first transmission and the second transmission proceed normally, and the network device does not need the configuration in step 3 or the first terminal device does not need the configuration in step 3.

By implementing the embodiments of the present disclosure, the interference of the uplink transmission of the second transmission on the reception of the first transmission caused by the transmission timing difference between the first transmission and the second transmission can be completely avoided, and the reception performance of the first transmission is improved when the first transmission and the second transmission use the same carrier in the same authorized frequency band. The interference can be completely avoided, and the coexistence performance between different systems is effectively guaranteed.

By implementing the embodiment of the present disclosure, when the first transmission and the second transmission of the first terminal device use the same carrier, the first transmission is performed after the uplink data of the second transmission is sent on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. Thus, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Please refer to FIG. 8 , which is a flowchart of another shared carrier interference processing method provided in an embodiment of the present disclosure.

As shown in FIG8 , the method is executed by the first terminal device, and the method may include but is not limited to the following steps:

S81: When the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device sends the uplink data of the second transmission after performing the first transmission on the carrier; wherein, the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

Among them, the first transmission and the second transmission of the first terminal device use the same carrier. For the problem of interference, please refer to the relevant description in the above embodiment, which will not be repeated here.

In the embodiment of the present disclosure, when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device can avoid interference of the uplink data of the second transmission to the first transmission by sending the uplink data of the second transmission after the first transmission on the carrier, thereby effectively ensuring the performance of coexistence between different systems and ensuring the communication quality.

In an embodiment of the present disclosure, the first terminal device may determine based on implementation that when the first transmission and the second transmission use the same carrier, the uplink data of the second transmission is sent after the first transmission is performed on the carrier, or the first terminal device may determine based on a network device indication that when the first transmission and the second transmission use the same carrier, the uplink data of the second transmission is sent after the first transmission is performed on the carrier, or the first terminal device may determine based on a protocol agreement that when the first transmission and the second transmission use the same carrier, the uplink data of the second transmission is sent after the first transmission is performed on the carrier.

In some embodiments, the first terminal device receives second configuration information sent by the network device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of a second transmission after performing a first transmission on the carrier.

In the embodiment of the present disclosure, the first terminal device may receive the first configuration information sent by the network device, and when the first configuration information is used to instruct the first terminal device to send the uplink data of the second transmission after the first transmission on the carrier, it is determined that when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device sends the uplink data of the second transmission after the first transmission on the carrier. In this way, the interference of the uplink data of the second transmission on the first transmission can be avoided, and the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

It can be understood that the first terminal device uses the last symbol of its time slot for the first transmission as a guard period (GP), which can eliminate the interference in some cases, that is, when the transmission timing difference TA difference between the first transmission and the second transmission by the first terminal device is not greater than the length of one symbol of the first transmission.

However, when the protection interval of the first transmission is smaller than the transmission timing difference TA difference between the second transmission and the first transmission, the interference cannot be avoided. The cause of this problem can be found in the relevant description in the above embodiment and will not be repeated here.

In the disclosed embodiment, when the first transmission and the second transmission use the same carrier, the first terminal device can judge the transmission timing difference between the first transmission and the second transmission and the size of the protection interval of the first transmission. When it is judged that the transmission timing difference is less than the protection interval, the first transmission and the second transmission can be performed normally; when it is judged that the transmission timing difference is greater than or equal to the protection interval, the uplink data of the second transmission can be sent after the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In some embodiments, when a first transmission and a second transmission of a first terminal device use the same carrier, the first terminal device determines the transmission timing difference between the first transmission and the second transmission, and a protection interval of the first transmission; when the transmission timing difference is greater than or equal to the protection interval, the first terminal device sends uplink data of the second transmission after performing the first transmission on the carrier.

In an embodiment of the present disclosure, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission, and the protection interval of the first transmission when the first transmission and the second transmission of the first terminal device use the same carrier; when the transmission timing difference is greater than or equal to the protection interval, the uplink data of the second transmission is sent after the first transmission is performed on the carrier.

Among them, the first terminal device can directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on implementation, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on network device instructions, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on protocol agreements.

It can be understood that the uplink timing advance TA of the first terminal device in the second transmission satisfies the relationship: TA=N _TA +N _{TA offset} , where _{N TA} is twice the propagation delay between the first terminal device and the network device.

When the second transmission uses the same carrier as the first transmission, the transmission time advance TA of the first terminal device in the first transmission is N _{TA offset} , and N _{TA offset} is the same as N _{TA offset} in the second transmission. Therefore, the transmission timing difference TA difference between the first transmission and the second transmission is N _TA , that is, twice the propagation delay between the first terminal device and the network device, which can be understood as the uplink propagation delay from the first terminal device to the network device plus the downlink propagation delay from the network device to the first terminal device. Among them, N _TA can be determined by the cell radius size.

Exemplarily, assuming that the cell radius is 15 km, the transmission timing difference TA difference between the first transmission and the second transmission satisfies the relationship: N _TA =(2*15*10 3 /3*10^8)*10 6 μs=100 μs.

In the embodiments of the present disclosure, the first terminal device may determine the propagation delay between the first terminal device and the network device based on implementation, or may determine the propagation delay between the first terminal device and the network device based on an indication of the network device, or may determine the propagation delay between the first terminal device and the network device based on a protocol agreement, and then, based on the determined propagation delay between the first terminal device and the network device, determine a transmission timing difference that is twice the propagation delay between the first terminal device and the network device.

In some embodiments, the first terminal device receives first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In the embodiment of the present disclosure, the first terminal device can receive first indication information sent by the network device, and when the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the transmission timing difference between the first transmission and the second transmission can be determined.

It should be noted that the first indication information may directly indicate the transmission timing difference between the first transmission and the second transmission, or may also indicate a parameter that can be used to determine the transmission timing difference between the first transmission and the second transmission. By way of example, the first indication information indicates the propagation delay between the first terminal device and the network device, and the embodiments of the present disclosure do not impose any specific restrictions on this.

Among them, the first terminal device can directly or indirectly determine the protection interval of the first transmission based on implementation, or can also directly or indirectly determine the protection interval of the first transmission based on network device instructions, or can also directly or indirectly determine the protection interval of the first transmission based on protocol agreements.

The protection interval of the first transmission is a symbol length in the time slot.

Exemplarily, the first transmission has three subcarrier spacings (SCS) in the low frequency FR1, namely 15kHz, 30kHz and 60kHz, and the corresponding symbol lengths of each are shown in Table 1 above.

Among them, when the subcarrier spacing of the first transmission is 15kHz, the guard interval is 71.35us; when the subcarrier spacing of the first transmission is 30kHz, the guard interval is 35.68us; when the subcarrier spacing of the first transmission is 60kHz, the guard interval is 17.84us.

In the embodiment of the present disclosure, the first terminal device may determine the subcarrier spacing of the first transmission based on implementation, or may determine the subcarrier spacing of the first transmission based on an indication of a network device, or may determine the subcarrier spacing of the first transmission based on a protocol agreement, and then determine the protection interval of the first transmission based on the determined subcarrier spacing of the first transmission.

In some embodiments, the first terminal device receives second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In the embodiment of the present disclosure, the first terminal device can receive the second indication information sent by the network device, and when the second indication information indicates the protection interval of the first transmission, the protection interval of the first transmission can be determined.

It should be noted that the second indication information may directly indicate the protection interval, or may also indicate a parameter that can be used to determine the protection interval. Exemplarily, the second indication information indicates the subcarrier spacing of the first transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

In some embodiments, the first terminal device sends the uplink data of the second transmission after the first transmission on the carrier, including: sending the uplink data of the second transmission after the last time slot of the first transmission on the carrier.

In the embodiment of the present disclosure, the first terminal device sends the uplink data of the second transmission after performing the first transmission on the carrier, and may send the uplink data of the second transmission after the last time slot of the first transmission on the carrier.

It can be understood that the first terminal device can make the last time slot of the first transmission on the carrier be before the first time slot of sending the uplink data of the second transmission on the carrier, thereby achieving the sending of the uplink data of the second transmission after the last time slot of the first transmission on the carrier.

In the embodiment of the present disclosure, in order to send the uplink data of the second transmission after the last time slot of the first transmission on the carrier, the first terminal device can obtain the first starting position time slot and the second transmission duration of the first transmission on the carrier, and obtain the second starting position time slot for sending the uplink data of the second transmission on the carrier. When the second starting position time slot is greater than or equal to the sum of the first starting position time slot and the second transmission duration, according to the first starting position time slot, the second starting position time slot and the second transmission duration, the uplink data of the second transmission is sent on the carrier and the first transmission is performed, so as to send the uplink data of the second transmission after the last time slot of the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In some embodiments, the first terminal device sends uplink data of the second transmission after the last time slot of the first transmission on the carrier, including: when the first transmission and the second transmission of the first terminal device use the same carrier and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, sending the uplink data of the second transmission after the first transmission on the carrier.

In the embodiment of the present disclosure, the first starting position time slot of the first transmission performed by the first terminal device on the carrier can be referred to as the first parameter; the second starting position time slot of the uplink data of the second transmission sent by the first terminal device on the carrier can be referred to as the second parameter; the second transmission duration of the first transmission performed by the first terminal device on the carrier can be referred to as the third parameter. Among them, the first parameter, the second parameter and the third parameter satisfy the first relationship, and the first relationship is that the second parameter is greater than or equal to the sum of the first parameter and the third parameter.

The first terminal device may determine the other one of the first parameter, the second parameter and the third parameter according to any two of the first parameter, the second parameter and the third parameter and the first relationship.

Exemplarily, the first terminal device may determine the third parameter according to the first parameter, the second parameter and the first relationship.

Exemplarily, the first terminal device may determine the first parameter according to the second parameter, the third parameter and the first relationship.

In the embodiments of the present disclosure, the first terminal device may directly or indirectly determine the first starting position time slot for the first transmission on the carrier based on implementation, or may directly or indirectly determine the first starting position time slot for the first transmission on the carrier based on an indication of a network device, or may directly or indirectly determine the first starting position time slot for the first transmission on the carrier based on a protocol agreement, thereby obtaining the first starting position time slot for the first transmission on the carrier.

In the embodiments of the present disclosure, the first terminal device may directly or indirectly determine the second starting position time slot for sending the uplink data of the second transmission on the carrier based on implementation, or may directly or indirectly determine the second starting position time slot for sending the uplink data of the second transmission on the carrier based on an indication of a network device, or may directly or indirectly determine the second starting position time slot for sending the uplink data of the second transmission on the carrier based on a protocol agreement, thereby obtaining the second starting position time slot for sending the uplink data of the second transmission on the carrier.

In the embodiments of the present disclosure, the first terminal device may directly or indirectly determine the second transmission duration of the first transmission on the carrier based on implementation, or may directly or indirectly determine the second transmission duration of the first transmission on the carrier based on an indication of a network device, or may directly or indirectly determine the second transmission duration of the first transmission on the carrier based on a protocol agreement, thereby obtaining the second transmission duration of the first transmission on the carrier.

It is understandable that NR V2X (first transmission) has two working modes, namely Mode 1 and Mode 2. When the first terminal device in NR V2X works in Mode 1, SL resources are scheduled through the network device. When the first terminal device in NR V2X works in Mode 2, the first terminal device automatically selects SL transmission resources, but Mode 2 can only be used on the V2X dedicated frequency band.

In NR V2X (first transmission), there is a high-level configuration parameter sl-DCI-ToSL-Trans related to time domain resource allocation, which is used to indicate the time interval (time gap) between DCI reception and the first sidelink SL transmission. The starting position time slot of the Sidelink transmission (the first starting position time slot of the first transmission on the carrier and the second transmission duration) can be obtained.

In NR Uu (second transmission), there is a high-level configuration parameter pusch-TimeDomainAllocationList related to time domain resource allocation, which is used to indicate the time domain configuration of PUSCH (Physical Uplink Shared Channel) uplink transmission, and the starting position time slot of PUSCH transmission can be obtained (the second starting position time slot for sending the uplink data of the second transmission on the carrier).

In the embodiment of the present disclosure, the second starting position time slot is greater than or equal to the sum of the first starting position time slot and the second transmission duration through network device configuration or pre-configuration of the first terminal device, thereby ensuring that the uplink data of the second transmission is sent after the last time slot of the transmission and/or reception of the first transmission.

Among them, the first terminal device can obtain the first starting position time slot and the second transmission duration for the first transmission on the carrier, obtain the second starting position time slot for sending the uplink data of the second transmission on the carrier, and when the second starting position time slot is greater than or equal to the sum of the first starting position time slot and the second transmission duration, according to the first starting position time slot, the second starting position time slot and the second transmission duration, send the uplink data of the second transmission on the carrier and perform the first transmission, so as to send the uplink data of the second transmission after the last time slot of the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In the embodiment of the present disclosure, the first terminal device may determine the first starting position time slot for the first transmission on the carrier based on implementation, or may determine the first starting position time slot for the first transmission on the carrier based on a network device indication, or may determine the first starting position time slot for the first transmission on the carrier based on a protocol agreement.

In some embodiments, a first terminal device obtains a first starting position time slot for a first transmission on a carrier, including: the first terminal device receives third indication information sent by a network device, wherein the third indication information is used to indicate the first starting position time slot for the first transmission on the carrier; and according to the third indication information, determines the first starting position time slot for the first transmission on the carrier.

In an embodiment of the present disclosure, when a first terminal device receives third indication information sent by a network device, and the third indication information indicates a first starting position time slot for a first transmission on a carrier, the first terminal device can obtain the first starting position time slot for the first transmission on the carrier according to the third indication information.

It should be noted that the third indication information may directly indicate the first starting position time slot for the first transmission on the carrier, or may also indicate parameters that can be used to determine the first starting position time slot for the first transmission on the carrier. Exemplarily, the third indication information indicates the time interval between DCI reception and the first side link transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the third indication information may be a high-level configuration parameter sl-DCI-ToSL-Trans, which is used to indicate the time interval between DCI reception and the first sidelink transmission, and to obtain the first starting position time slot for the first transmission on the carrier.

In the embodiments of the present disclosure, the first terminal device may determine the second starting position time slot for sending the second transmission on the carrier based on implementation, or may also determine the second starting position time slot for sending the uplink data of the second transmission on the carrier based on a network device indication, or may also determine the second starting position time slot for sending the uplink data of the second transmission on the carrier based on a protocol agreement.

In some embodiments, the first terminal device obtains the second starting position time slot for sending the second transmitted uplink data on the carrier, including: the first terminal device receives fourth indication information sent by the network device, wherein the fourth indication information is used to indicate the second starting position time slot for sending the second transmitted uplink data on the carrier; according to the fourth indication information, obtains the second starting position time slot for sending the second transmitted uplink data on the carrier.

In an embodiment of the present disclosure, when a first terminal device receives fourth indication information sent by a network device, and the fourth indication information indicates a second starting position time slot for sending uplink data of a second transmission on a carrier, the first terminal device can obtain the second starting position time slot for sending uplink data of the second transmission on the carrier according to the fourth indication information.

It should be noted that the fourth indication information may directly indicate the second starting position time slot for sending the second transmitted uplink data on the carrier, or may also indicate parameters that can be used to determine the second starting position time slot for sending the second transmitted uplink data on the carrier. Exemplarily, the fourth indication information indicates the time domain configuration of the PUSCH uplink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the fourth indication information may be a high-level configuration parameter pusch-TimeDomainAllocationList, which is used to indicate the time domain configuration of PUSCH uplink transmission, and may obtain a second starting position time slot for sending second transmitted uplink data on the carrier.

In the embodiment of the present disclosure, the first terminal device may determine the second transmission duration of the first transmission on the carrier based on implementation, or may also determine the second transmission duration of the first transmission on the carrier based on a network device indication, or may also determine the second transmission duration of the first transmission on the carrier based on a protocol agreement.

In some embodiments, a first terminal device obtains a second transmission duration of a first transmission on a carrier, including: the first terminal device receives sixth indication information sent by a network device, wherein the sixth indication information is used to indicate the second transmission duration of the first transmission on the carrier; and according to the sixth indication information, obtains the second transmission duration of the first transmission on the carrier.

In an embodiment of the present disclosure, when a first terminal device receives sixth indication information sent by a network device, and the sixth indication information indicates a second transmission duration of a first transmission on a carrier, the first terminal device can obtain the second transmission duration of the first transmission on the carrier according to the sixth indication information.

It should be noted that the sixth indication information may directly indicate the second transmission duration of the first transmission on the carrier, or may also indicate a parameter that can be used to determine the second transmission duration of the first transmission on the carrier. Exemplarily, the sixth indication information indicates the time interval between DCI reception and the first sidelink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the sixth indication information may be a high-level configuration parameter sl-DCI-ToSL-Trans, which is used to indicate the time interval between DCI reception and the first sidelink transmission, and the second transmission duration for the first transmission on the carrier may be obtained.

By implementing the embodiments of the present disclosure, the interference of the uplink data of the second transmission on the reception of the first transmission caused by the transmission timing difference between the first transmission and the second transmission can be completely avoided, and the reception performance of the first transmission is improved when the first transmission and the second transmission use the same carrier in the same authorized frequency band. The interference can be completely avoided, and the coexistence performance between different systems is effectively guaranteed.

By implementing the embodiment of the present disclosure, when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device sends the uplink data of the second transmission after the first transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. Thus, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Please refer to FIG. 9 , which is a flowchart of another shared carrier interference processing method provided in an embodiment of the present disclosure.

As shown in FIG9 , the method may include but is not limited to the following steps:

S91: When the first transmission and the second transmission of the first terminal device use the same carrier, and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, the first transmission is performed after sending the uplink data of the second transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

It can be understood that the first terminal device uses the last symbol of its time slot for the first transmission as a guard period (GP), which can eliminate the interference in some cases, that is, when the transmission timing difference TA difference between the first transmission and the second transmission by the first terminal device is not greater than the length of one symbol of the first transmission.

However, when the protection interval of the first transmission is smaller than the transmission timing difference TA difference between the second transmission and the first transmission, the interference cannot be avoided. The cause of this problem can be found in the relevant description in the above embodiment and will not be repeated here.

Based on this, in the embodiment of the present disclosure, when the first transmission and the second transmission use the same carrier, the first terminal device can judge the transmission timing difference between the first transmission and the second transmission and the size of the protection interval of the first transmission. When it is judged that the transmission timing difference is less than the protection interval, the first transmission and the second transmission can be carried out normally; when it is judged that the transmission timing difference is greater than or equal to the protection interval, the first transmission can be carried out after the uplink data of the second transmission is sent on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Exemplarily, as shown in FIG6 , there is a transmission timing difference TA difference between sending the uplink data of the second transmission and transmitting and/or receiving the first transmission, and the reception of the first transmission (slot#3) occurs after sending the uplink data of the second transmission (slot#0, slot#1, slot#2). Therefore, the interference of the uplink transmission of the second transmission on the reception of the first transmission caused by the transmission timing difference between the first transmission and the second transmission can be effectively avoided.

In an embodiment of the present disclosure, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission, and the protection interval of the first transmission when the first transmission and the second transmission of the first terminal device use the same carrier; when the transmission timing difference is greater than or equal to the protection interval, the first transmission is performed after sending the uplink data of the second transmission on the carrier.

Among them, the first terminal device can directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on implementation, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on network device instructions, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on protocol agreements.

It can be understood that the uplink timing advance TA of the first terminal device in the second transmission satisfies the relationship: TA=N _TA +N _{TA offset} , where _{N TA} is twice the propagation delay between the first terminal device and the network device.

When the first transmission and the second transmission use the same carrier, the transmission time advance TA of the first terminal device in the first transmission is N _{TA offset} , and N _{TA offset} is the same as N _{TA offset} in the second transmission. Therefore, the transmission timing difference TA difference between the first transmission and the second transmission is N _TA , that is, twice the propagation delay between the first terminal device and the network device, which can be understood as the uplink propagation delay from the first terminal device to the network device plus the downlink propagation delay from the network device to the first terminal device. Among them, N _TA can be determined by the cell radius size.

Exemplarily, assuming that the cell radius is 15 km, the transmission timing difference TA difference between the first transmission and the second transmission satisfies the relationship: N _TA =(2*15*10 3 /3*10^8)*10 6 μs=100 μs.

In the embodiments of the present disclosure, the first terminal device may determine the propagation delay between the first terminal device and the network device based on implementation, or may determine the propagation delay between the first terminal device and the network device based on an indication of the network device, or may determine the propagation delay between the first terminal device and the network device based on a protocol agreement, and then, based on the determined propagation delay between the first terminal device and the network device, determine a transmission timing difference that is twice the propagation delay between the first terminal device and the network device.

In some embodiments, the first terminal device receives first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In the embodiment of the present disclosure, the first terminal device can receive first indication information sent by the network device, and when the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the transmission timing difference between the first transmission and the second transmission can be determined.

It should be noted that the first indication information may directly indicate the transmission timing difference between the first transmission and the second transmission, or may also indicate a parameter that can be used to determine the transmission timing difference between the first transmission and the second transmission. By way of example, the first indication information indicates the propagation delay between the first terminal device and the network device, and the embodiments of the present disclosure do not impose any specific restrictions on this.

Among them, the first terminal device can directly or indirectly determine the protection interval of the first transmission based on implementation, or can also directly or indirectly determine the protection interval of the first transmission based on network device instructions, or can also directly or indirectly determine the protection interval of the first transmission based on protocol agreements.

The protection interval of the first transmission is a symbol length in the time slot.

Exemplarily, the first transmission has three subcarrier spacings (SCS) in the low frequency FR1, namely 15kHz, 30kHz and 60kHz, and the corresponding symbol lengths of each are shown in Table 1 above.

Among them, when the subcarrier spacing of the first transmission is 15kHz, the guard interval is 71.35us; when the subcarrier spacing of the first transmission is 30kHz, the guard interval is 35.68us; when the subcarrier spacing of the first transmission is 60kHz, the guard interval is 17.84us.

In the embodiment of the present disclosure, the first terminal device may determine the subcarrier spacing of the first transmission based on implementation, or may determine the subcarrier spacing of the first transmission based on an indication of a network device, or may determine the subcarrier spacing of the first transmission based on a protocol agreement, and then determine the protection interval of the first transmission based on the determined subcarrier spacing of the first transmission.

In some embodiments, the first terminal device receives second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In the embodiment of the present disclosure, the first terminal device can receive the second indication information sent by the network device, and when the second indication information indicates the protection interval of the first transmission, the protection interval of the first transmission can be determined.

It should be noted that the second indication information may directly indicate the protection interval, or may also indicate a parameter that can be used to determine the protection interval. Exemplarily, the second indication information indicates the subcarrier spacing of the first transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

It should be noted that in the embodiment of the present disclosure, S91 can be implemented alone or in combination with any other step in the embodiment of the present disclosure, for example, in combination with S31 in the embodiment of the present disclosure, and the embodiment of the present disclosure is not limited to this.

By implementing the embodiment of the present disclosure, when the first transmission and the second transmission of the first terminal device use the same carrier, and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Please refer to FIG. 10 , which is a flowchart of another shared carrier interference processing method provided in an embodiment of the present disclosure.

As shown in FIG10 , the method may include but is not limited to the following steps:

S101: When the first transmission and the second transmission of the first terminal device use the same carrier and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, the uplink data of the second transmission is sent after the first transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

It can be understood that the first terminal device uses the last symbol of its time slot for the first transmission as a guard period (GP), which can eliminate the interference in some cases, that is, when the transmission timing difference TA difference between the first transmission and the second transmission by the first terminal device is not greater than the length of one symbol of the first transmission.

However, when the protection interval of the first transmission is smaller than the transmission timing difference TA difference between the second transmission and the first transmission, the interference cannot be avoided. The cause of this problem can be found in the relevant description in the above embodiment and will not be repeated here.

In the disclosed embodiment, when the first transmission and the second transmission use the same carrier, the first terminal device can judge the transmission timing difference between the first transmission and the second transmission and the size of the protection interval of the first transmission. When it is judged that the transmission timing difference is less than the protection interval, the first transmission and the second transmission can be performed normally; when it is judged that the transmission timing difference is greater than or equal to the protection interval, the uplink data of the second transmission can be sent after the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In some embodiments, when a first transmission and a second transmission of a first terminal device use the same carrier, the first terminal device determines the transmission timing difference between the first transmission and the second transmission, and a protection interval of the first transmission; when the transmission timing difference is greater than or equal to the protection interval, the first terminal device sends uplink data of the second transmission after performing the first transmission on the carrier.

In an embodiment of the present disclosure, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission, and the protection interval of the first transmission when the first transmission and the second transmission of the first terminal device use the same carrier; when the transmission timing difference is greater than or equal to the protection interval, the uplink data of the second transmission is sent after the first transmission is performed on the carrier.

Among them, the first terminal device can directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on implementation, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on network device instructions, or can also directly or indirectly determine the transmission timing difference between the first transmission and the second transmission based on protocol agreements.

It can be understood that the uplink timing advance TA of the first terminal device in the second transmission satisfies the relationship: TA=N _TA +N _{TA offset} , where _{N TA} is twice the propagation delay between the first terminal device and the network device.

When the second transmission uses the same carrier as the first transmission, the transmission time advance TA of the first terminal device in the first transmission is N _{TA offset} , and N _{TA offset} is the same as N _{TA offset} in the second transmission. Therefore, the transmission timing difference TA difference between the first transmission and the second transmission is N _TA , that is, twice the propagation delay between the first terminal device and the network device, which can be understood as the uplink propagation delay from the first terminal device to the network device plus the downlink propagation delay from the network device to the first terminal device. Among them, N _TA can be determined by the cell radius size.

Exemplarily, assuming that the cell radius is 15 km, the transmission timing difference TA difference between the first transmission and the second transmission satisfies the relationship: N _TA =(2*15*10 3 /3*10^8)*10 6 μs=100 μs.

In the embodiments of the present disclosure, the first terminal device may determine the propagation delay between the first terminal device and the network device based on implementation, or may determine the propagation delay between the first terminal device and the network device based on an indication of the network device, or may determine the propagation delay between the first terminal device and the network device based on a protocol agreement, and then, based on the determined propagation delay between the first terminal device and the network device, determine a transmission timing difference that is twice the propagation delay between the first terminal device and the network device.

In some embodiments, the first terminal device receives first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In the embodiment of the present disclosure, the first terminal device can receive first indication information sent by the network device, and when the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the transmission timing difference between the first transmission and the second transmission can be determined.

It should be noted that the first indication information may directly indicate the transmission timing difference between the first transmission and the second transmission, or may also indicate a parameter that can be used to determine the transmission timing difference between the first transmission and the second transmission. By way of example, the first indication information indicates the propagation delay between the first terminal device and the network device, and the embodiments of the present disclosure do not impose any specific restrictions on this.

Among them, the first terminal device can directly or indirectly determine the protection interval of the first transmission based on implementation, or can also directly or indirectly determine the protection interval of the first transmission based on network device instructions, or can also directly or indirectly determine the protection interval of the first transmission based on protocol agreements.

The protection interval of the first transmission is a symbol length in the time slot.

Exemplarily, the first transmission has three subcarrier spacings (SCS) in the low frequency FR1, namely 15kHz, 30kHz and 60kHz, and the corresponding symbol lengths of each are shown in Table 1 above.

Among them, when the subcarrier spacing of the first transmission is 15kHz, the guard interval is 71.35us; when the subcarrier spacing of the first transmission is 30kHz, the guard interval is 35.68us; when the subcarrier spacing of the first transmission is 60kHz, the guard interval is 17.84us.

In the embodiment of the present disclosure, the first terminal device may determine the subcarrier spacing of the first transmission based on implementation, or may determine the subcarrier spacing of the first transmission based on an indication of a network device, or may determine the subcarrier spacing of the first transmission based on a protocol agreement, and then determine the protection interval of the first transmission based on the determined subcarrier spacing of the first transmission.

In some embodiments, the first terminal device receives second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In the embodiment of the present disclosure, the first terminal device can receive the second indication information sent by the network device, and when the second indication information indicates the protection interval of the first transmission, the protection interval of the first transmission can be determined.

It should be noted that the second indication information may directly indicate the protection interval, or may also indicate a parameter that can be used to determine the protection interval. Exemplarily, the second indication information indicates the subcarrier spacing of the first transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

It should be noted that in the embodiment of the present disclosure, S101 can be implemented alone or in combination with any other step in the embodiment of the present disclosure, for example, in combination with S81 in the embodiment of the present disclosure, and the embodiment of the present disclosure is not limited to this.

By implementing the embodiment of the present disclosure, when the first transmission and the second transmission of the first terminal device use the same carrier, and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, the first terminal device sends the uplink data of the second transmission after the first transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Please refer to FIG. 11 , which is a flowchart of another shared carrier interference processing method provided in an embodiment of the present disclosure.

As shown in FIG. 11 , the method may include but is not limited to the following steps:

S111: The network device sends first configuration information to the first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform a first transmission after sending uplink data of a second transmission on the same carrier used by the first transmission and the second transmission.

S112: When the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier according to the first configuration information, wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

Among them, the first transmission and the second transmission of the first terminal device use the same carrier. For the problem of interference, please refer to the relevant description in the above embodiment, which will not be repeated here.

In the embodiment of the present disclosure, the first terminal device may receive the first configuration information sent by the network device, and when the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the carrier, it is determined that when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier. In this way, the interference of sending the uplink data of the second transmission on the first transmission can be avoided, and the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

It can be understood that the first terminal device uses the last symbol of its time slot for the first transmission as a guard period (GP), which can eliminate the interference in some cases, that is, when the transmission timing difference TA difference between the first transmission and the second transmission by the first terminal device is not greater than the length of one symbol of the first transmission.

However, when the protection interval of the first transmission is smaller than the transmission timing difference TA difference between the second transmission and the first transmission, the interference cannot be avoided. The cause of this problem can be found in the relevant description in the above embodiment and will not be repeated here.

In some embodiments, the network device sends first indication information to the first terminal device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In an embodiment of the present disclosure, the network device can send first indication information to the first terminal device. When the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission based on the first indication information.

Among them, the relevant description of the first indication information can refer to the relevant description in the above embodiment, and will not be repeated here.

In some embodiments, the network device sends second indication information to the first terminal device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In the embodiment of the present disclosure, the network device may send second indication information to the first terminal device. When the second indication information indicates a protection interval of the first transmission, the first terminal device may determine the protection interval of the first transmission according to the second indication information.

Among them, the relevant description of the second indication information can refer to the relevant description in the above embodiment, and will not be repeated here.

In the disclosed embodiment, when the first transmission and the second transmission use the same carrier, the first terminal device can judge the transmission timing difference between the first transmission and the second transmission and the size of the protection interval of the first transmission. When it is judged that the transmission timing difference is less than the protection interval, the first transmission and the second transmission can be performed normally; when it is judged that the transmission timing difference is greater than or equal to the protection interval, the uplink data of the second transmission can be sent after the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In some embodiments, the network device sends third indication information to the first terminal device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on a carrier.

In an embodiment of the present disclosure, the network device may send third indication information to the first terminal device, and when the third indication information indicates a first starting position time slot for a first transmission on a carrier, the first terminal device may obtain the first starting position time slot for the first transmission on the carrier according to the third indication information.

Among them, the relevant description of the third indication information can refer to the relevant description in the above embodiment, which will not be repeated here.

In some embodiments, the network device sends fourth indication information to the first terminal device, wherein the fourth indication information is used to indicate the first terminal device to send a second starting position time slot of second transmitted uplink data on the carrier.

In an embodiment of the present disclosure, the network device may send fourth indication information to the first terminal device, and when the fourth indication information indicates a second starting position time slot for sending uplink data of the second transmission on a carrier, the first terminal device may obtain the second starting position time slot for sending uplink data of the second transmission on the carrier according to the fourth indication information.

Among them, the relevant description of the fourth indication information can refer to the relevant description in the above embodiment, which will not be repeated here.

In some embodiments, the network device sends fifth indication information to the first terminal device, wherein the fifth indication information is used to indicate a first transmission duration of uplink data of a second transmission sent by the first terminal device on a carrier.

In an embodiment of the present disclosure, the network device may send fifth indication information to the first terminal device, and when the fifth indication information indicates a first transmission duration for sending uplink data of the second transmission on a carrier, the first terminal device may obtain the first transmission duration for sending uplink data of the second transmission on the carrier according to the fifth indication information.

Among them, the relevant description of the fifth indication information can refer to the relevant description in the above embodiment, which will not be repeated here.

In the embodiment of the present disclosure, in order to realize the first transmission after the last time slot of the uplink data of the second transmission is sent on the carrier, the first terminal device can obtain the first starting position time slot for the first transmission on the carrier, and obtain the second starting position time slot and the first transmission duration for the uplink data of the second transmission to be sent on the carrier. When the first starting position time slot is greater than or equal to the sum of the second starting position time slot and the first transmission duration, the uplink data of the second transmission is sent on the carrier and the first transmission is performed according to the first starting position time slot, the second starting position time slot and the first transmission duration, so as to realize the first transmission after the last time slot of the uplink data of the second transmission is sent on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

It should be noted that in the embodiments of the present disclosure, S111 and S112 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, in combination with S31 and/or S91 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends the first configuration information to the first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the same carrier used by the first transmission and the second transmission; when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device performs the first transmission after sending the uplink data of the second transmission on the carrier according to the first configuration information, wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Please refer to FIG. 12 , which is a flowchart of another shared carrier interference processing method provided in an embodiment of the present disclosure.

As shown in FIG. 12 , the method may include but is not limited to the following steps:

S121: The network device sends second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of the second transmission after performing the first transmission on the same carrier used by the first transmission and the second transmission.

S122: When the first transmission and the second transmission of the first terminal device use the same carrier, the terminal device sends the uplink data of the second transmission after performing the first transmission on the carrier according to the second configuration information; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

Among them, the first transmission and the second transmission of the first terminal device use the same carrier. For the problem of interference, please refer to the relevant description in the above embodiment, which will not be repeated here.

In the embodiment of the present disclosure, the first terminal device may receive the first configuration information sent by the network device, and when the first configuration information is used to instruct the first terminal device to send the uplink data of the second transmission after the first transmission on the carrier, it is determined that when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device sends the uplink data of the second transmission after the first transmission on the carrier. In this way, the interference of the uplink data of the second transmission on the first transmission can be avoided, and the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

It can be understood that the first terminal device uses the last symbol of its time slot for the first transmission as a guard period (GP), which can eliminate the interference in some cases, that is, when the transmission timing difference TA difference between the first transmission and the second transmission by the first terminal device is not greater than the length of one symbol of the first transmission.

However, when the protection interval of the first transmission is smaller than the transmission timing difference TA difference between the second transmission and the first transmission, the interference cannot be avoided. The cause of this problem can be found in the relevant description in the above embodiment and will not be repeated here.

In some embodiments, the network device sends first indication information to the first terminal device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In an embodiment of the present disclosure, the network device can send first indication information to the first terminal device. When the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission based on the first indication information.

Among them, the relevant description of the first indication information can refer to the relevant description in the above embodiment, and will not be repeated here.

In some embodiments, the network device sends second indication information to the first terminal device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In the embodiment of the present disclosure, the network device may send second indication information to the first terminal device. When the second indication information indicates a protection interval of the first transmission, the first terminal device may determine the protection interval of the first transmission according to the second indication information.

Among them, the relevant description of the second indication information can refer to the relevant description in the above embodiment, and will not be repeated here.

In the embodiment of the present disclosure, when the first transmission and the second transmission use the same carrier, the first terminal device can judge the transmission timing difference between the first transmission and the second transmission and the size of the protection interval of the first transmission. When it is judged that the transmission timing difference is less than the protection interval, the first transmission and the second transmission can be performed normally; when it is judged that the transmission timing difference is greater than or equal to the protection interval, the second transmission can be sent after the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

In some embodiments, the network device sends third indication information to the first terminal device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on a carrier.

In an embodiment of the present disclosure, the network device may send third indication information to the first terminal device, and when the third indication information indicates a first starting position time slot for a first transmission on a carrier, the first terminal device may obtain the first starting position time slot for the first transmission on the carrier according to the third indication information.

Among them, the relevant description of the third indication information can refer to the relevant description in the above embodiment, which will not be repeated here.

In some embodiments, the network device sends fourth indication information to the first terminal device, wherein the fourth indication information is used to indicate the first terminal device to send a second starting position time slot of second transmitted uplink data on the carrier.

In an embodiment of the present disclosure, the network device may send fourth indication information to the first terminal device, and when the fourth indication information indicates a second starting position time slot for sending uplink data of the second transmission on a carrier, the first terminal device may obtain the second starting position time slot for sending uplink data of the second transmission on the carrier according to the fourth indication information.

Among them, the relevant description of the fourth indication information can refer to the relevant description in the above embodiment, which will not be repeated here.

In some embodiments, the network device sends sixth indication information to the first terminal device, wherein the sixth indication information is used to indicate a second transmission duration of a first transmission transmitted by the first terminal device on a carrier.

In an embodiment of the present disclosure, the network device may send sixth indication information to the first terminal device, and when the sixth indication information indicates a second transmission duration of the first transmission on the carrier, the first terminal device may obtain the second transmission duration of the first transmission on the carrier according to the sixth indication information.

Among them, the relevant description of the sixth indication information can refer to the relevant description in the above embodiment, which will not be repeated here.

In the disclosed embodiment, the first terminal device can obtain the first starting position time slot and the second transmission duration for the first transmission on the carrier, obtain the second starting position time slot for sending the uplink data of the second transmission on the carrier, and when the second starting position time slot is greater than or equal to the sum of the first starting position time slot and the second transmission duration, according to the first starting position time slot, the second starting position time slot and the second transmission duration, send the uplink data of the second transmission on the carrier and perform the first transmission, so as to send the uplink data of the second transmission after the last time slot of the first transmission on the carrier. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

It should be noted that in the embodiments of the present disclosure, S121 and S122 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, in combination with S81 and/or S101 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends the second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send the uplink data of the second transmission after the first transmission on the same carrier used by the first transmission and the second transmission; when the first transmission and the second transmission of the first terminal device use the same carrier, the first terminal device sends the uplink data of the second transmission after the first transmission on the carrier according to the second configuration information; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. In this way, interference can be avoided, the coexistence performance between different systems can be effectively guaranteed, and the communication quality can be guaranteed.

Please refer to FIG. 13 , which is a flowchart of a method for determining a transmission timing difference between a first transmission and a second transmission provided in an embodiment of the present disclosure.

As shown in FIG. 13 , the method may include but is not limited to the following steps:

S131: The network device sends first indication information to the first terminal device, wherein the first indication information is used to indicate a transmission timing difference between a first transmission and a second transmission.

S132: The first terminal device determines a transmission timing difference between the first transmission and the second transmission according to the first indication information.

In an embodiment of the present disclosure, the network device can send first indication information to the first terminal device. When the first indication information indicates the transmission timing difference between the first transmission and the second transmission, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission based on the first indication information.

It can be understood that the uplink timing advance TA of the first terminal device in the second transmission satisfies the relationship: TA=N _TA +N _{TA offset} , where _{N TA} is twice the propagation delay between the first terminal device and the network device.

When the second transmission uses the same carrier as the first transmission, the transmission time advance TA of the first terminal device in the first transmission is N _{TA offset} , and N _{TA offset} is the same as N _{TA offset} in the second transmission. Therefore, the transmission timing difference TA difference between the first transmission and the second transmission is N _TA , that is, twice the propagation delay between the first terminal device and the network device, which can be understood as the uplink propagation delay from the first terminal device to the network device plus the downlink propagation delay from the network device to the first terminal device. Among them, N _TA can be determined by the cell radius size.

Exemplarily, assuming that the cell radius is 15 km, the transmission timing difference TA difference between the first transmission and the second transmission satisfies the relationship: N _TA =(2*15*10 3 /3*10^8)*10 6 μs=100 μs.

It should be noted that the first indication information may directly indicate the transmission timing difference between the first transmission and the second transmission, or may also indicate a parameter that can be used to determine the transmission timing difference between the first transmission and the second transmission. By way of example, the first indication information indicates the propagation delay between the first terminal device and the network device, and the embodiments of the present disclosure do not impose any specific restrictions on this.

It should be noted that in the embodiments of the present disclosure, S131 and S132 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, they can be implemented in combination with S31 and/or S81 and/or S91 and/or S101 and/or S111 and S112 and/or S121 and S122 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends first indication information to the first terminal device, wherein the first indication information is used to indicate the transmission timing difference between the first transmission and the second transmission, and the first terminal device determines the transmission timing difference between the first transmission and the second transmission according to the first indication information. Thus, the first terminal device can determine the transmission timing difference between the first transmission and the second transmission.

Please refer to FIG. 14 , which is a flowchart of a method for determining a protection interval of a first transmission provided in an embodiment of the present disclosure.

As shown in FIG. 14 , the method may include but is not limited to the following steps:

S141: The network device sends second indication information to the first terminal device, where the second indication information is used to indicate a protection interval of the first transmission.

S142: The first terminal device determines a protection interval of the first transmission according to the second indication information.

In the embodiment of the present disclosure, the network device may send second indication information to the first terminal device. When the second indication information indicates a protection interval of the first transmission, the first terminal device may determine the protection interval of the first transmission according to the second indication information.

It should be noted that the second indication information may directly indicate the protection interval, or may also indicate a parameter that can be used to determine the protection interval. Exemplarily, the second indication information indicates the subcarrier spacing of the first transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

It can be understood that the protection interval of the first transmission is a symbol length in the time slot.

Exemplarily, the first transmission has three subcarrier spacings (SCS) in the low frequency FR1, namely 15kHz, 30kHz and 60kHz, and the corresponding symbol lengths of each are shown in Table 1 above.

Among them, when the subcarrier spacing of the first transmission is 15kHz, the guard interval is 71.35us; when the subcarrier spacing of the first transmission is 30kHz, the guard interval is 35.68us; when the subcarrier spacing of the first transmission is 60kHz, the guard interval is 17.84us.

In the embodiment of the present disclosure, the first terminal device may determine the subcarrier spacing of the first transmission based on implementation, or may determine the subcarrier spacing of the first transmission based on an indication of a network device, or may determine the subcarrier spacing of the first transmission based on a protocol agreement, and then determine the protection interval of the first transmission based on the determined subcarrier spacing of the first transmission.

It should be noted that in the embodiments of the present disclosure, S141 and S142 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, they can be implemented in combination with S31 and/or S81 and/or S91 and/or S101 and/or S111 and S112 and/or S121 and S122 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends the second indication information to the first terminal device, wherein the second indication information is used to indicate the protection interval of the first transmission, and the first terminal device determines the protection interval of the first transmission according to the second indication information. Thus, the first terminal device can determine the protection interval of the first transmission.

Please refer to FIG. 15 , which is a flowchart of a method for acquiring a first starting position time slot for a first transmission on a carrier provided in an embodiment of the present disclosure.

As shown in FIG. 15 , the method may include but is not limited to the following steps:

S151: The network device sends third indication information to the first terminal device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on a carrier.

S152: The first terminal device obtains a first starting position time slot for a first transmission on the carrier according to the third indication information.

In an embodiment of the present disclosure, the network device may send third indication information to the first terminal device, and when the third indication information indicates a first starting position time slot for a first transmission on a carrier, the first terminal device may obtain the first starting position time slot for the first transmission on the carrier according to the third indication information.

It should be noted that the third indication information may directly indicate the first starting position time slot for the first transmission on the carrier, or may also indicate parameters that can be used to determine the first starting position time slot for the first transmission on the carrier. Exemplarily, the third indication information indicates the time interval between DCI reception and the first side link transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the third indication information may be a high-layer configuration parameter sl-DCI-ToSL-Trans, which is used to indicate the time interval between DCI reception and the first sidelink transmission, and to obtain the first starting position time slot T _sl-startslot for the first transmission on the carrier.

It is understandable that NR V2X (first transmission) has two working modes, namely Mode 1 and Mode 2. When the first terminal device in NR V2X works in Mode 1, SL resources are scheduled through the network device. When the first terminal device in NR V2X works in Mode 2, the first terminal device automatically selects SL transmission resources, but Mode 2 can only be used on the V2X dedicated frequency band.

In NR V2X (first transmission), there is a high-level configuration parameter sl-DCI-ToSL-Trans related to time domain resource allocation, which is used to indicate the time interval (time gap) between DCI reception and the first sidelink SL transmission, and the starting position time slot T _sl-startslot of Sidelink transmission (the first starting position time slot for the first transmission on the carrier) can be obtained.

It should be noted that in the embodiments of the present disclosure, S151 and S152 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, they can be implemented in combination with S31 and/or S81 and/or S91 and/or S101 and/or S111 and S112 and/or S121 and S122 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends the third indication information to the first terminal device, wherein the third indication information is used to indicate the first starting position time slot for the first transmission of the first terminal device on the carrier, and the first terminal device obtains the first starting position time slot for the first transmission on the carrier according to the third indication information. Thus, the first terminal device can obtain the first starting position time slot for the first transmission on the carrier.

Please refer to FIG. 16 , which is a flowchart of a method for acquiring a second starting position time slot for sending a second transmission on a carrier provided by an embodiment of the present disclosure.

As shown in FIG16 , the method may include but is not limited to the following steps:

S161: The network device sends fourth indication information to the first terminal device, wherein the fourth indication information is used to instruct the first terminal device to send a second starting position time slot of second transmitted uplink data on the carrier.

S162: The first terminal device obtains, according to the fourth indication information, a second starting position time slot for sending uplink data of a second transmission on the carrier.

In an embodiment of the present disclosure, the network device may send fourth indication information to the first terminal device, and when the fourth indication information indicates a second starting position time slot for sending uplink data of the second transmission on a carrier, the first terminal device may obtain the second starting position time slot for sending uplink data of the second transmission on the carrier according to the fourth indication information.

It should be noted that the fourth indication information may directly indicate the second starting position time slot for sending the second transmitted uplink data on the carrier, or may also indicate parameters that can be used to determine the second starting position time slot for sending the second transmitted uplink data on the carrier. Exemplarily, the fourth indication information indicates the time domain configuration of the PUSCH uplink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the fourth indication information may be a high-layer configuration parameter pusch-TimeDomainAllocationList, which is used to indicate the time domain configuration of PUSCH uplink transmission, and may obtain a second starting position time slot T _uu-startslot for sending second transmitted uplink data on a carrier.

It can be understood that there is a high-level configuration parameter pusch-TimeDomainAllocationList related to time domain resource allocation in NR Uu (second transmission), which is used to indicate the time domain configuration of PUSCH (Physical Uplink Shared Channel) uplink transmission, and the starting position time slot T _uu-startslot of PUSCH transmission can be obtained (the second starting position time slot for sending the uplink data of the second transmission on the carrier).

It should be noted that in the embodiments of the present disclosure, S161 and S162 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, they can be implemented in combination with S31 and/or S81 and/or S91 and/or S101 and/or S111 and S112 and/or S121 and S122 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends fourth indication information to the first terminal device, wherein the fourth indication information is used to instruct the first terminal device to send the second starting position time slot of the second transmission on the carrier, and the first terminal device obtains the second starting position time slot for sending the second transmission on the carrier according to the fourth indication information. Thus, the first terminal device can obtain the second starting position time slot for sending the second transmission on the carrier.

Please refer to FIG. 17 , which is a flowchart of a method for acquiring a first transmission duration for sending a second transmission on a carrier provided by an embodiment of the present disclosure.

As shown in FIG. 17 , the method may include but is not limited to the following steps:

S171: The network device sends fifth indication information to the first terminal device, wherein the fifth indication information is used to indicate a first transmission duration of uplink data of a second transmission sent by the first terminal device on a carrier.

S172: The first terminal device obtains, according to the fifth indication information, a first transmission duration for sending second transmitted uplink data on the carrier.

In an embodiment of the present disclosure, the network device may send fifth indication information to the first terminal device, and when the fifth indication information indicates a first transmission duration for sending uplink data of the second transmission on a carrier, the first terminal device may obtain the first transmission duration for sending uplink data of the second transmission on the carrier according to the fifth indication information.

It should be noted that the fifth indication information may directly indicate the first transmission duration of the uplink data of the second transmission sent on the carrier, or may also indicate a parameter that can be used to determine the first transmission duration of the uplink data of the second transmission sent on the carrier. Exemplarily, the fifth indication information indicates the time domain configuration of the PUSCH uplink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the fifth indication information may be a higher layer configuration parameter pusch-TimeDomainAllocationList, which is used to indicate the time domain configuration of PUSCH uplink transmission, and may obtain a first transmission duration Luu _-translength for sending second transmission uplink data on a carrier.

It can be understood that there is a high-level configuration parameter pusch-TimeDomainAllocationList related to time domain resource allocation in NR Uu (second transmission), which is used to indicate the time domain configuration of PUSCH (Physical Uplink Shared Channel) uplink transmission, and the transmission duration Luu _-translength (the first transmission duration for sending the uplink data of the second transmission on the carrier) of PUSCH can be obtained.

It should be noted that in the embodiments of the present disclosure, S171 and S172 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, they can be implemented in combination with S31 and/or S81 and/or S91 and/or S101 and/or S111 and S112 and/or S121 and S122 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends fifth indication information to the first terminal device, wherein the fifth indication information is used to indicate the first transmission duration of the second transmission sent by the first terminal device on the carrier, and the first terminal device obtains the first transmission duration of sending the second transmission on the carrier according to the fifth indication information. Thus, the first terminal device can obtain the first transmission duration of sending the second transmission on the carrier.

Please refer to FIG. 18 , which is a flowchart of a method for acquiring a second transmission duration for a first transmission on a carrier provided by an embodiment of the present disclosure.

As shown in FIG. 18 , the method may include but is not limited to the following steps:

S181: The network device sends sixth indication information to the first terminal device, wherein the sixth indication information is used to indicate a second transmission duration of a first transmission performed by the first terminal device on a carrier.

S182: The first terminal device obtains a second transmission duration for performing a first transmission on the carrier according to the sixth indication information.

In an embodiment of the present disclosure, the network device may send sixth indication information to the first terminal device, and when the sixth indication information indicates a second transmission duration of the first transmission on the carrier, the first terminal device may obtain the second transmission duration of the first transmission on the carrier according to the sixth indication information.

It should be noted that the sixth indication information may directly indicate the second transmission duration of the first transmission on the carrier, or may also indicate a parameter that can be used to determine the second transmission duration of the first transmission on the carrier. Exemplarily, the sixth indication information indicates the time interval between DCI reception and the first sidelink transmission, and the embodiments of the present disclosure do not impose specific restrictions on this.

Exemplarily, the sixth indication information may be a high-level configuration parameter sl-DCI-ToSL-Trans, which is used to indicate the time interval between DCI reception and the first sidelink transmission, and the second transmission duration for the first transmission on the carrier may be obtained.

It is understandable that NR V2X (first transmission) has two working modes, namely Mode 1 and Mode 2. When the first terminal device in NR V2X works in Mode 1, SL resources are scheduled through the network device. When the first terminal device in NR V2X works in Mode 2, the first terminal device automatically selects SL transmission resources, but Mode 2 can only be used on the V2X dedicated frequency band.

In NR V2X (first transmission), there is a high-level configuration parameter sl-DCI-ToSL-Trans related to time domain resource allocation, which is used to indicate the time interval (time gap) between DCI reception and the first sidelink SL transmission, and the transmission duration of the Sidelink transmission (the second transmission duration of the first transmission on the carrier) can be obtained.

It should be noted that in the embodiments of the present disclosure, S181 and S182 can be implemented separately or in combination with any other steps in the embodiments of the present disclosure, for example, they can be implemented in combination with S31 and/or S81 and/or S91 and/or S101 and/or S111 and S112 and/or S121 and S122 in the embodiments of the present disclosure, and the embodiments of the present disclosure are not limited to this.

By implementing the embodiment of the present disclosure, the network device sends the sixth indication information to the first terminal device, wherein the sixth indication information is used to indicate the second transmission duration of the first transmission performed by the first terminal device on the carrier, and the first terminal device obtains the second transmission duration of the first transmission performed on the carrier according to the sixth indication information. Thus, the first terminal device can obtain the second transmission duration of the first transmission performed on the carrier.

In the above-mentioned embodiments provided by the present disclosure, the methods provided by the embodiments of the present disclosure are introduced from the perspectives of the first terminal device and the interaction between the first terminal device and the network device.

Please refer to Figure 19, which is a schematic diagram of the structure of a communication device 1 provided in an embodiment of the present disclosure. The communication device 1 shown in Figure 19 may include a transceiver module 11 and a processing module 12. The transceiver module may include a sending module and/or a receiving module, the sending module is used to implement the sending function, the receiving module is used to implement the receiving function, and the transceiver module can implement the sending function and/or the receiving function.

The communication device 1 may be a first terminal device, or a device in the first terminal device, or a device that can be used in conjunction with the first terminal device. Alternatively, the communication device 1 may be a network device, or a device in the network device, or a device that can be used in conjunction with the network device.

The communication device 1 is a first terminal device:

The device includes: a transceiver module 11.

The transceiver module 11 is configured to perform the first transmission after sending the uplink data of the second transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

The transceiver module 11 is further configured to perform the first transmission after sending the uplink data of the second transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission.

In some embodiments, the transceiver module 11 is further configured to receive first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In some embodiments, the transceiver module 11 is further configured to receive second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In some embodiments, the transceiver module 11 is further configured to perform the first transmission after sending the last time slot of the uplink data of the second transmission on the carrier.

In some embodiments, the device further includes: a processing module 12 .

The processing module 12 is configured to determine that the first starting position time slot for the first transmission on the carrier is greater than or equal to the sum of the second starting position time slot for sending the uplink data of the second transmission on the carrier and the first transmission duration for sending the uplink data of the second transmission on the carrier.

In some embodiments, the transceiver module 11 is further configured to receive third indication information sent by the network device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on the carrier.

In some embodiments, the device further includes: a processing module 12 .

The processing module 12 is further configured to obtain a first starting position time slot for performing a first transmission on the carrier according to the third indication information.

In some embodiments, the transceiver module 11 is further configured to receive third indication information sent by the network device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on the carrier.

The processing module 12 is further configured to obtain a first starting position time slot for performing a first transmission on the carrier according to the third indication information.

In some embodiments, the transceiver module 11 is further configured to receive fourth indication information sent by the network device, wherein the fourth indication information is used to indicate the first terminal device to send a second starting position time slot of the second transmitted uplink data on the carrier.

The processing module 12 is further configured to obtain, according to the fourth indication information, a second starting position time slot for sending the second transmitted uplink data on the carrier.

In some embodiments, the transceiver module 11 is further configured to receive fifth indication information sent by the network device, wherein the fifth indication information is used to indicate a first transmission duration of uplink data of a second transmission sent by the first terminal device on the carrier.

The processing module 12 is further configured to obtain, according to the fifth indication information, a first transmission duration for sending the second transmitted uplink data on the carrier.

In some embodiments, the transceiver module 11 is further configured to receive first configuration information sent by the network device, wherein the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the carrier.

In some embodiments, the first transmission and the second transmission of the first terminal device use the same carrier in a time division duplex TDD frequency band.

The communication device 1 is a first terminal device:

The device includes: a transceiver module 11.

The transceiver module 11 is configured to send uplink data of the second transmission after the first transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface.

In some embodiments, the transceiver module 11 is also configured to send uplink data of the second transmission after the first transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission.

In some embodiments, the transceiver module 11 is further configured to receive first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In some embodiments, the transceiver module 11 is further configured to receive second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In some embodiments, the transceiver module 11 is further configured to send uplink data of the second transmission after the last time slot of the first transmission on the carrier.

In some embodiments, the device further includes: a processing module 12 .

The processing module 12 is configured to determine that a second starting position time slot for sending uplink data of a second transmission on the carrier is greater than or equal to a first starting position time slot for a first transmission on the carrier and a second transmission duration for the first transmission on the carrier.

In some embodiments, the transceiver module 11 is further configured to receive third indication information sent by the network device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on the carrier.

The processing module 12 is further configured to obtain a first starting position time slot for performing a first transmission on the carrier according to the third indication information.

In some embodiments, the transceiver module 11 is further configured to receive sixth indication information sent by the network device, wherein the sixth indication information is used to indicate a second transmission duration of a first transmission performed by the first terminal device on the carrier.

The processing module 12 is further configured to obtain, according to the sixth indication information, a second transmission duration for performing the first transmission on the carrier.

In some embodiments, the transceiver module 11 is further configured to receive fourth indication information sent by the network device, wherein the fourth indication information is used to indicate the first terminal device to send a second starting position time slot of the second transmitted uplink data on the carrier.

The processing module 12 is further configured to obtain, according to the fourth indication information, a second starting position time slot for sending the second transmitted uplink data on the carrier.

In some embodiments, the transceiver module 11 is further configured to receive second configuration information sent by the network device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of the second transmission after performing the first transmission on the carrier.

The communication device 1 is a network device:

The device includes: a transceiver module 11.

The transceiver module 11 is configured to send first configuration information to the first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the carrier; or to send second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send the uplink data of the second transmission after performing the first transmission on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface; and the first terminal device uses the carrier to perform the first transmission and the second transmission.

In some embodiments, the transceiver module 11 is further configured to send first indication information to the first terminal device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission.

In some embodiments, the transceiver module 11 is further configured to send second indication information to the first terminal device, wherein the second indication information is used to indicate a protection interval of the first transmission.

In some embodiments, the transceiver module 11 is further configured to send third indication information to the first terminal device, wherein the third indication information is used to indicate a first starting position time slot for a first transmission by the first terminal device on the carrier.

In some embodiments, the transceiver module 11 is further configured to send fourth indication information to the first terminal device, wherein the fourth indication information is used to indicate the first terminal device to send a second starting position time slot of the second transmitted uplink data on the carrier.

In some embodiments, the transceiver module 11 is further configured to send fifth indication information to the first terminal device, wherein the fifth indication information is used to indicate a first transmission duration of uplink data of a second transmission sent by the first terminal device on the carrier.

In some embodiments, the transceiver module 11 is further configured to send sixth indication information to the first terminal device, wherein the sixth indication information is used to indicate a second transmission duration of the first transmission transmitted by the first terminal device on the carrier.

Regarding the communication device 1 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.

The communication device 1 provided in the above embodiments of the present disclosure achieves the same or similar beneficial effects as the interference processing methods for shared carriers provided in some of the above embodiments, which will not be described in detail here.

Please refer to Figure 20, which is a schematic diagram of the structure of another communication device 1000 provided in an embodiment of the present disclosure. The communication device 1000 can be a first terminal device, or a network device, or a chip, a chip system, or a processor that supports the first terminal device to implement the above method, or a chip, a chip system, or a processor that supports the network device to implement the above method. The communication device 1000 can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

The communication device 1000 may include one or more processors 1001. The processor 1001 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (such as a network device, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

Optionally, the communication device 1000 may further include one or more memories 1002, on which a computer program 1004 may be stored, and the memory 1002 executes the computer program 1004 so that the communication device 1000 executes the method described in the above method embodiment. Optionally, data may also be stored in the memory 1002. The communication device 1000 and the memory 1002 may be provided separately or integrated together.

Optionally, the communication device 1000 may further include a transceiver 1005 and an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 1005 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, the communication device 1000 may further include one or more interface circuits 1007. The interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001. The processor 1001 executes the code instructions to enable the communication device 1000 to execute the method described in the above method embodiment.

The communication device 1000 is a first terminal device: the transceiver 1005 is used to execute S31 in Figure 3: S81 in Figure 8; S91 in Figure 9; S101 in Figure 10; S111 in Figure 11; S121 in Figure 12; S131 in Figure 13; S141 in Figure 14; S151 in Figure 15; S161 in Figure 16; S171 in Figure 17; S181 in Figure 18; the processor 1001 is used to execute S92 in Figure 9; S102 in Figure 10; S112 in Figure 11; S122 in Figure 12; S132 in Figure 13; S142 in Figure 14; S152 in Figure 15; S162 in Figure 16; S172 in Figure 17; S182 in Figure 18.

The communication device 1000 is a network device: the transceiver 1005 is used to execute S111 in Figure 11; S121 in Figure 12; S131 in Figure 13; S141 in Figure 14; S151 in Figure 15; S161 in Figure 16; S171 in Figure 17; and S181 in Figure 18.

In one implementation, the processor 1001 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

In one implementation, the processor 1001 may store a computer program 1003, which runs on the processor 1001 and enables the communication device 1000 to perform the method described in the above method embodiment. The computer program 1003 may be fixed in the processor 1001, in which case the processor 1001 may be implemented by hardware.

In one implementation, the communication device 1000 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver may also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiment may be a first terminal device or a network device, but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited by FIG. 20. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

(3) ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6)Others

For the case where the communication device may be a chip or a chip system, please refer to FIG. 21 , which is a structural diagram of a chip provided in an embodiment of the present disclosure.

The chip 1100 includes a processor 1101 and an interface 1103. The number of the processor 1101 may be one or more, and the number of the interface 1103 may be multiple.

For the case where the chip is used to implement the function of the first terminal device in the embodiment of the present disclosure:

The interface 1103 is used to receive code instructions and transmit them to the processor.

The processor 1101 is configured to run code instructions to execute the interference processing method for a shared carrier as described in some of the above embodiments.

For the case where the chip is used to implement the functions of the network device in the embodiment of the present disclosure:

The interface 1103 is used to receive code instructions and transmit them to the processor.

The processor 1101 is configured to run code instructions to execute the interference processing method for a shared carrier as described in some of the above embodiments.

Optionally, the chip 1100 further includes a memory 1102, and the memory 1102 is used to store necessary computer programs and data.

Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

An embodiment of the present disclosure also provides an interference processing system for a shared carrier, the system comprising the communication device as the first terminal device and the communication device as the network device in the embodiment of FIG. 19 above, or the system comprising the communication device as the first terminal device and the communication device as the network device in the embodiment of FIG. 20 above.

The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present disclosure are only used for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, but also indicate the order of precedence.

At least one in the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

The corresponding relationships shown in the tables in the present disclosure can be configured or predefined. The values of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values or representations of the parameters can also be other values or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (34)

A method for processing interference of a shared carrier, characterized in that the method is performed by a first terminal device and includes: When the first transmission and the second transmission of the first terminal device use the same carrier, the first transmission is performed after the uplink data of the second transmission is sent on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. The method according to claim 1, characterized in that when the first transmission and the second transmission of the first terminal device use the same carrier, performing the first transmission after sending the uplink data of the second transmission on the carrier comprises: When the first transmission and the second transmission of the first terminal device use the same carrier and the transmission timing difference between the first transmission and the second transmission is greater than or equal to the protection interval of the first transmission, the first transmission is performed after the uplink data of the second transmission is sent on the carrier. The method according to claim 2, characterized in that the method further comprises: Receive first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission. The method according to claim 2, characterized in that the method further comprises: Receive second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission. The method according to any one of claims 1 to 4, characterized in that the first transmission is performed after the uplink data of the second transmission is sent on the carrier, comprising: The first transmission is performed after a last time slot for sending uplink data of the second transmission on the carrier. The method according to any one of claims 1 to 5, characterized in that the first transmission is performed after the uplink data of the second transmission is sent on the carrier, comprising: Determine that a first starting position time slot for performing the first transmission on the carrier is greater than or equal to a sum of a second starting position time slot for sending uplink data of the second transmission on the carrier and a first transmission duration for sending uplink data of the second transmission on the carrier. The method according to claim 6, characterized in that the method further comprises: Receive third indication information sent by the network device, wherein the third indication information is used to indicate a first starting position time slot for the first transmission by the first terminal device on the carrier. The method according to claim 6, characterized in that the method further comprises: Receive fourth indication information sent by the network device, wherein the fourth indication information is used to indicate the second starting position time slot of the first terminal device to send the second transmitted uplink data on the carrier. The method according to claim 6, characterized in that the method further comprises: Receive fifth indication information sent by the network device, wherein the fifth indication information is used to indicate a first transmission duration of the second transmitted uplink data sent by the first terminal device on the carrier. The method according to any one of claims 1 to 9, characterized in that the method further comprises: Receive first configuration information sent by the network device, wherein the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the carrier. The method according to any one of claims 1 to 10 is characterized in that the first transmission and the second transmission of the first terminal device use the same carrier in the time division duplex TDD frequency band. A method for processing interference of a shared carrier, characterized in that the method is performed by a first terminal device and includes: When the first transmission and the second transmission of the first terminal device use the same carrier, the uplink data of the second transmission is sent after the first transmission is performed on the carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device via the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device via the Uu interface. The method according to claim 12, wherein when the first transmission and the second transmission of the first terminal device use the same carrier, sending the uplink data of the second transmission after the first transmission on the carrier comprises: When a first transmission and a second transmission of the first terminal device use the same carrier and a transmission timing difference between the first transmission and the second transmission is greater than or equal to a protection interval of the first transmission, uplink data of the second transmission is sent after the first transmission on the carrier. The method according to claim 13, characterized in that the method further comprises: Receive first indication information sent by the network device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission. The method according to claim 13, characterized in that the method further comprises: Receive second indication information sent by the network device, wherein the second indication information is used to indicate a protection interval of the first transmission. The method according to any one of claims 12 to 15, characterized in that the sending of the uplink data of the second transmission after the first transmission on the carrier comprises: The uplink data of the second transmission is sent after the last time slot of the first transmission on the carrier. The method according to any one of claims 12 to 16, characterized in that sending the uplink data of the second transmission after the first transmission on the carrier comprises: Determine that a second starting position time slot for sending the second transmitted uplink data on the carrier is greater than or equal to a first starting position time slot for performing the first transmission on the carrier and a second transmission duration for performing the first transmission on the carrier. The method according to claim 17, characterized in that the method further comprises: Receive third indication information sent by the network device, wherein the third indication information is used to indicate a first starting position time slot for the first transmission by the first terminal device on the carrier. The method according to claim 17, characterized in that the method further comprises: Receive sixth indication information sent by the network device, wherein the sixth indication information is used to indicate a second transmission duration of the first transmission performed by the first terminal device on the carrier. The method of claim 17, wherein obtaining a second starting position time slot for sending the second transmission on the carrier comprises: Receive fourth indication information sent by the network device, wherein the fourth indication information is used to indicate the second starting position time slot of the first terminal device to send the second transmitted uplink data on the carrier. The method according to any one of claims 12 to 20, characterized in that the method further comprises: Receive second configuration information sent by the network device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of the second transmission after performing the first transmission on the carrier. A method for processing interference of a shared carrier, characterized in that the method is executed by a network device and includes: Sending first configuration information to a first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform the first transmission after sending uplink data of the second transmission on a carrier; or sending second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send uplink data of the second transmission after performing the first transmission on the carrier; Among them, the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface; and the first terminal device uses the carrier to perform the first transmission and the second transmission. The method according to claim 22, characterized in that the method further comprises: Send first indication information to the first terminal device, wherein the first indication information is used to indicate a transmission timing difference between the first transmission and the second transmission. The method according to claim 22, characterized in that the method further comprises: Send second indication information to the first terminal device, wherein the second indication information is used to indicate a protection interval of the first transmission. The method according to claim 22, characterized in that the method further comprises: Send third indication information to the first terminal device, wherein the third indication information is used to indicate a first starting position time slot for the first transmission by the first terminal device on the carrier. The method according to claim 22, characterized in that the method further comprises: Send fourth indication information to the first terminal device, wherein the fourth indication information is used to indicate the first terminal device to send the second starting position time slot of the second transmitted uplink data on the carrier. The method according to claim 22, characterized in that the method further comprises: Send fifth indication information to the first terminal device, wherein the fifth indication information is used to indicate a first transmission duration of the uplink data of the second transmission sent by the first terminal device on the carrier. The method according to claim 22, characterized in that the method further comprises: Send sixth indication information to the first terminal device, wherein the sixth indication information is used to indicate a second transmission duration of the first transmission performed by the first terminal device on the carrier. A communication device, characterized in that the device comprises: The transceiver module is configured to perform the first transmission after sending the uplink data of the second transmission on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. A communication device, characterized in that the device comprises: The transceiver module is configured to send uplink data of the second transmission after the first transmission is performed on the carrier when the first transmission and the second transmission of the first terminal device use the same carrier; wherein the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; and the second transmission is the data transmission between the first terminal device and the network device through the Uu interface. A communication device, characterized in that the device comprises: A transceiver module, configured to send first configuration information to a first terminal device, wherein the first configuration information is used to instruct the first terminal device to perform the first transmission after sending the uplink data of the second transmission on the carrier; or send second configuration information to the first terminal device, wherein the second configuration information is used to instruct the first terminal device to send the uplink data of the second transmission after performing the first transmission on the carrier; Among them, the first transmission is the data transmission between the first terminal device and the second terminal device through the Pc5 interface; the second transmission is the data transmission between the first terminal device and the network device through the Uu interface; and the first terminal device uses the carrier to perform the first transmission and the second transmission. A communication device, characterized in that the device comprises a processor and a memory, the memory stores a computer program, the processor executes the computer program stored in the memory so that the device performs the method as described in any one of claims 1 to 21, or the processor executes the computer program stored in the memory so that the device performs the method as described in any one of claims 22 to 28. A communication device, characterized in that it comprises: a processor and an interface circuit; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is used to run the code instructions to execute the method according to any one of claims 1 to 21, or is used to run the code instructions to execute the method according to any one of claims 22 to 28. A computer-readable storage medium for storing instructions, which, when executed, enables the method according to any one of claims 1 to 21 to be implemented, or, when executed, enables the method according to any one of claims 22 to 28 to be implemented.

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