WO2025111805A1 - Sidelink periodic reference signal sending method, terminal, and storage medium - Google Patents

Abstract

The present disclosure relates to the technical field of communications, and in particular to a sidelink periodic reference signal sending method, a terminal, and a storage medium. The sidelink periodic reference signal sending method comprises: receiving first information from a second terminal, wherein the first information is used for instructing a first terminal to periodically send a reference signal. The second terminal knows configurations of reference signals sent by a plurality of first terminals connected to the second terminal, and therefore, whether there is overlap or conflict between the reference signals can be determined, and the configurations of the reference signals are determined on the basis of an actual situation, so that the overlap or conflict between the reference signals is avoided, failure of reception of the reference signals due to the second terminal being not able to clearly simulate a receiving beam is avoided, and thus no impact is caused to beam failure detection and beam failure recovery.

Description

Sidelink periodic reference signal transmission method, terminal and storage medium Technical Field

The present disclosure relates to the field of communication technology, and in particular to a sidelink periodic reference signal sending method, a terminal and a storage medium.

Background Art

The sidelink (SL) communication mode can support beam-based reception and transmission. If a receiving end can receive periodic reference signals from multiple transmitting ends, there may be a situation where the periodic reference signal resources overlap, resulting in the receiving end being unable to clearly determine which analog receiving beam should be used.

Summary of the invention

The embodiments of the present disclosure propose a sidelink periodic reference signal sending method, terminal and storage medium to solve the technical problem in the related art that the receiving end cannot clearly apply which analog receiving beam to use.

According to a first aspect of an embodiment of the present disclosure, a method for sending a sidelink periodic reference signal is proposed, which is performed by a first terminal. The method includes: receiving first information from a second terminal, where the first information is used to indicate that the first terminal periodically sends a reference signal.

According to a second aspect of an embodiment of the present disclosure, a method for sending a sidelink periodic reference signal is proposed, which is executed by a second terminal. The method includes: sending first information to at least one first terminal, wherein the first information is used to indicate that the first terminal periodically sends a reference signal.

According to a third aspect of an embodiment of the present disclosure, a method for sending a sidelink periodic reference signal is proposed, including:

The second terminal sends first information to the first terminal, where the first information is used to instruct the first terminal to periodically send a reference signal;

The first terminal determines a configuration of the reference signal based on the first information.

According to the fourth aspect of an embodiment of the present disclosure, a sidelink periodic reference signal sending device is proposed, the device comprising: a transceiver module for receiving first information from a second terminal, the first information being used to indicate periodic sending of a reference signal; and a processing module for determining a configuration of the reference signal based on the first information.

According to the fifth aspect of an embodiment of the present disclosure, a sidelink periodic reference signal sending device is proposed, the device comprising: a processing module, used to determine first information corresponding to at least one first terminal, the first information being used to indicate that the first terminal periodically sends a reference signal; and a transceiver module, used to send the first information to the at least one first terminal.

According to the sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein the executable instructions, when executed by the processor, enable the terminal to execute the sidelink periodic reference signal sending method described in the first aspect or the second aspect above.

According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a second terminal and at least one first terminal, wherein the first terminal is configured to implement the sidelink periodic reference signal sending method described in the first aspect, and the second terminal is configured to implement the sidelink periodic reference signal sending method described in the second aspect.

According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the sidelink periodic reference signal sending method described in the first aspect or the second aspect above.

According to an embodiment of the present disclosure, a first terminal may periodically send a reference signal to a second terminal based on the first information sent by the second terminal. Since the second terminal has mastered the configurations of reference signal sending by multiple first terminals connected to it, it may determine whether overlap or conflict occurs between the reference signals, and determine the configuration of each reference signal according to the actual situation, thereby avoiding overlap or conflict between reference signals, and avoiding failure of reference signal reception due to the inability of the second terminal to clearly simulate the receiving beam, and thus will not have any impact on beam failure detection and beam failure recovery.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

FIG2 is an interactive schematic diagram of a method for sending a sidelink periodic reference signal according to an embodiment of the present disclosure.

FIG3A is a schematic flowchart of a method for sending a sidelink periodic reference signal according to an embodiment of the present disclosure.

FIG3B is a schematic diagram showing resource configuration of a reference signal according to an embodiment of the present disclosure.

FIG3C is a schematic diagram showing resource configuration of a reference signal according to an embodiment of the present disclosure.

FIG3D is a schematic diagram showing resource configuration of a reference signal according to an embodiment of the present disclosure.

FIG4 is a schematic flowchart of a method for sending a sidelink periodic reference signal according to an embodiment of the present disclosure.

FIG5 is a schematic block diagram showing a device structure of a first terminal according to an embodiment of the present disclosure.

FIG6 is a schematic block diagram showing a device structure of a second terminal according to an embodiment of the present disclosure.

FIG. 7 is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure.

FIG8 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.

DETAILED DESCRIPTION

Embodiments of the present disclosure provide a sidelink periodic reference signal sending method, a terminal, and a storage medium.

In a first aspect, an embodiment of the present disclosure proposes a method for sending a sidelink periodic reference signal, which is performed by a first terminal. The method includes: receiving first information from a second terminal, wherein the first information is used to indicate that the first terminal periodically sends a reference signal.

In the above embodiment, the first terminal can periodically send a reference signal to the second terminal based on the first information sent by the second terminal. Since the second terminal has mastered the configuration of the reference signals sent by multiple first terminals connected to it, it can determine whether there is overlap or conflict between the reference signals, and determine the configuration of each reference signal according to the actual situation, so as to avoid overlap or conflict between the reference signals, and avoid the failure of reference signal reception due to the inability of the second terminal to clearly simulate the receiving beam, and thus will not have any impact on beam failure detection and beam failure recovery.

In combination with some embodiments of the first aspect. In some embodiments, the first information is used to indicate at least one of the following: overlap or conflict between the reference signal and reference signals sent by other terminals; first cycle duration; the first cycle duration is the duration of the first cycle for the second terminal to receive the reference signal; the time domain position allocated to the reference signal in the first cycle; the unoccupied time domain position in the first cycle; the starting position of the time period for the first terminal to send the reference signal in the system frame.

In combination with some embodiments of the first aspect, in some embodiments, the first cycle duration corresponds to the number of first terminals sending reference signals to the second terminal.

In combination with some embodiments of the first aspect. In some embodiments, the method further includes:

Determine at least one of the following configurations of the reference signal based on the first information: determine a second cycle duration corresponding to a second cycle in which the first terminal sends a reference signal; wherein the second cycle duration is M times the first cycle duration, and M is a positive integer greater than 1; determine a time domain position for sending the reference signal in the second cycle; determine a starting position of the time period in a system frame.

In combination with some embodiments of the first aspect, in some embodiments, the time period includes at least one second period.

In combination with some embodiments of the first aspect. In some embodiments, the determining of the time domain position for sending the reference signal in the second period includes: determining a first sub-period among the M sub-periods included in the second period, the period duration of the sub-period being the first period duration; determining the time domain position for sending the reference signal in the first sub-period as the time domain position for sending the reference signal in the second period; wherein the time domain position for sending the reference signal in the first sub-period corresponds to the time domain position allocated for the reference signal in the first period.

In combination with some embodiments of the first aspect, in some embodiments, the reference signal is a reference signal for beam failure detection.

In combination with some embodiments of the first aspect, in some embodiments, the reference signal is a channel state information reference signal CSI-RS.

In a second aspect, an embodiment of the present disclosure proposes a method for sending a sidelink periodic reference signal, which is executed by a second terminal. The method includes: sending first information to at least one first terminal, wherein the first information is used to indicate that the first terminal periodically sends a reference signal.

In combination with some embodiments of the second aspect. In some embodiments, the first information is used to indicate at least one of the following: the reference signal overlaps or conflicts with reference signals sent by other terminals; the first cycle duration; the first cycle duration is the duration of the first cycle for the second terminal to receive the reference signal; the time domain position allocated to the reference signal in the first cycle; the unoccupied time domain position in the first cycle; the starting position of the time period for the first terminal to send the reference signal in the system frame.

In combination with some embodiments of the second aspect. In some embodiments, the first cycle duration is The number of first terminals to which the reference signal is sent corresponds.

In a third aspect, a method for sending a sidelink periodic reference signal is proposed, the method comprising: a second terminal sends first information to a first terminal, the first information being used to indicate that the first terminal periodically sends a reference signal; the first terminal determines the configuration of the reference signal based on the first information.

In a fourth aspect, a sidelink periodic reference signal sending device is proposed, the device comprising: a transceiver module for receiving first information from a second terminal, the first information being used to indicate periodic sending of a reference signal; and a processing module for determining a configuration of the reference signal based on the first information.

In the fifth aspect, a sidelink periodic reference signal sending device is proposed, and the device includes: a processing module, used to determine first information corresponding to at least one first terminal, and the first information is used to indicate that the first terminal periodically sends a reference signal; a transceiver module, used to send the first information to the at least one first terminal.

In the sixth aspect, a terminal is proposed, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein the executable instructions, when executed by the processor, enable the terminal to execute the sidelink periodic reference signal sending method described in the optional embodiment of the first aspect or the second aspect.

In the seventh aspect, an embodiment of the present disclosure proposes a communication device, wherein the communication device includes: one or more processors; a memory coupled to the processor, wherein the memory stores executable instructions, wherein when the executable instructions are executed by the processor, the processor calls the executable instructions so that the communication device executes the sidelink periodic reference signal sending method described in the optional embodiment of the first aspect or the second aspect.

In an eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a second terminal and at least one first terminal; wherein the first terminal is configured to execute the method described in the optional embodiment of the first aspect, and the second terminal is configured to execute the method described in the optional embodiment of the second aspect.

In a ninth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional embodiment of the first aspect or the second aspect.

In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional embodiment of the first aspect or the second aspect.

In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method as described in the first aspect or the optional embodiment of the second aspect.

It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be repeated here.

The disclosed embodiments propose a sidelink periodic reference signal transmission method, a terminal, a network device, and a storage medium. In some embodiments, the terms information transmission method, information receiving method, information processing method, communication method, etc. can be replaced with each other, the terms terminal, network device, information processing device, communication device, etc. can be replaced with each other, and the terms information processing system, communication system, etc. can be replaced with each other.

The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional embodiments in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional embodiments of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "one", "an", "the", "above", "said", "foregoing", "this", etc., may mean "one and only one", or may mean "one or more", "at least one", etc.

For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

In the embodiments of the present disclosure, “plurality” refers to two or more.

In some embodiments, terms such as "at least one of", "one or more", "a plurality of", "multiple" and the like can be used interchangeably.

In some embodiments, "at least one of A, B", "A and/or B", "in one case A, The recording methods such as "in another case B", "in response to one case A, in response to another case B", etc. may include the following technical solutions according to the situation: in some embodiments A (A is executed independently of B); in some embodiments B (B is executed independently of A); in some embodiments A and B are selected for execution (A and B are selectively executed); in some embodiments A and B (both A and B are executed). When there are more branches such as A, B, C, etc., it is similar to the above.

In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar.

The prefixes such as "first" and "second" in the embodiments of the present disclosure are only for distinguishing different description objects and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be constituted due to the use of prefixes.

For example, if the description object is "field", the ordinal number before "field" in "first field" and "second field" does not limit the position or order between "fields", "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of "first field" and "second field". For another example, if the description object is "level", the ordinal number before "level" in "first level" and "second level" does not limit the priority between "levels". For another example, the number of description objects is not limited by ordinal numbers and can be one or more. For example, "first device" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", "first device" and "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably.

In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

In some embodiments, devices and the like can be interpreted as physical or virtual, and their names are not limited to those in the embodiments.

The recorded names, terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

In some embodiments, the terms "access network device (AN device), "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission/reception point (TRP)", "panel", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell", "macro cell", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell)", "serving cell", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part (BWP))" and so on can be used interchangeably.

In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.

In some embodiments, the access network device, the core network device, or the network device may be replaced by a terminal. For example, the communication between the access network device, the core network device, or the network device and the terminal is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2T), etc.). V2X) and other structures), the embodiments of the present disclosure may also be applied. In this case, it may also be configured that the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" may also be replaced with terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be replaced with side channels, and uplinks, downlinks, etc. may be replaced with side links.

In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.

In some embodiments, acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

In some embodiments, data, information, etc. may be obtained with the user's consent.

In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.

FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

As shown in FIG. 1 , a communication system 100 includes a first terminal 101 and at least one second terminal 102 .

In some embodiments, the first terminal 101 and the second terminal 102 include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, 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 a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), and at least one of a wireless terminal device in a smart home (smart home), but are not limited to these.

In some embodiments, the communication system 100 may further include a network device, and the network device includes at least one of the following: an access network device and a core network device. The access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a wireless network, etc. in a 5G communication system. At least one of a controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a base band unit (base band unit, BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and an access node in a Wi-Fi system, but not limited thereto.

In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC).

In some embodiments, the technical solution of the present disclosure may be applicable to the Open RAN architecture. In this case, the interfaces between access network devices or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

In some embodiments, the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit). The CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.

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 proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto. The subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.

The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), 5G new radio (NR), future wireless Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine-to-Machine (M2M) system, Internet of Things (IoT) Things, IoT) system, vehicle-to-everything (V2X), systems using other communication methods, and next-generation systems based on them. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application.

FIG2 is an interactive schematic diagram of a method for sending a sidelink periodic reference signal according to an embodiment of the present disclosure.

As shown in FIG2 , the sidelink periodic reference signal sending method includes:

Step S201: The second terminal 102 sends first information to the first terminal 101, where the first information is used to instruct the first terminal to periodically send a reference signal.

In some embodiments, after establishing a SideLink connection with the first terminal, the second terminal may determine the configuration of the reference signal corresponding to the first terminal, and then send first information to the first terminal, where the first information is used to instruct the first terminal to periodically send a reference signal to the second terminal.

Step S202: The first terminal 101 determines the configuration of the reference signal based on the first information.

In some embodiments, after establishing a SideLink connection between the first terminal and the second terminal, the first terminal can receive first information from the second terminal, where the first information is used to instruct the first terminal to periodically send a reference signal to the second terminal. The first terminal can determine the configuration for periodically sending the reference signal based on the first information.

In some embodiments, after establishing SideLink connections with multiple first terminals, the second terminal can determine the configuration of the reference signal corresponding to each first terminal according to actual needs, and then send first information to each first terminal respectively, where the first information is used to instruct each first terminal to periodically send a reference signal to the second terminal, so that each first terminal determines its corresponding configuration for periodically sending the reference signal based on the received first information.

In some embodiments, before sending the first information to the first terminal, the second terminal may first determine the periodic The configuration of the corresponding reference signal is received from each first terminal. When it is determined that the reference signals periodically sent by the multiple first terminals overlap or conflict, the first information is sent to the corresponding first terminal.

After receiving the first information, the first terminal may adjust the configuration of the reference signal sent periodically so that the adjusted reference signal no longer overlaps or conflicts.

In some embodiments, after receiving the first information, the first terminal may re-determine the configuration of the periodically transmitted reference signal according to the first information, and periodically transmit the reference signal to the second terminal using the analog transmit beam corresponding to the second terminal based on the updated configuration. Correspondingly, the second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the updated configuration.

In some embodiments, the reference signal may be a reference signal used for beam failure detection.

In some embodiments, the reference signal is a channel state information reference signal CSI-RS.

In some embodiments, the first information may be used to indicate that the reference signal periodically sent by the first terminal overlaps or conflicts with the reference signal sent by other terminals. After receiving the first information, the first terminal may adjust the configuration of the reference signal periodically sent by the first terminal, and send the adjusted configuration to the second terminal, so that the second terminal updates the configuration of receiving the reference signal of the first terminal according to the adjusted configuration.

In some embodiments, the first cycle duration corresponds to the number of first terminals sending reference signals to the second terminal.

In some embodiments, after receiving the first information, the second terminal can also determine at least one of the following configurations of the reference signal based on the first information: determine the second cycle duration corresponding to the second cycle for sending the reference signal by the first terminal; wherein the second cycle duration is M times the first cycle duration, and M is a positive integer greater than 1; determine the time domain position for sending the reference signal in the second cycle; determine the starting position of the time period in the system frame.

In some embodiments, the second terminal may send first information to at least one first terminal, where the first information may be used to indicate that a reference signal periodically sent by the first terminal overlaps or conflicts with a reference signal sent by other terminals.

After receiving the first information, the first terminal may adjust the configuration of the reference signal periodically sent by the first terminal, and send the adjusted configuration to the second terminal, so that the second terminal updates the configuration of receiving the reference signal of the first terminal according to the adjusted configuration.

In some embodiments, the second terminal may send first information to at least one first terminal, wherein the first information The information can be used to indicate the length of the first cycle; the length of the first cycle is the length of the first cycle for the second terminal to receive the reference signal.

After receiving the first information, the first terminal may determine, based on the first cycle duration, a second cycle duration corresponding to a second cycle in which the first terminal sends a reference signal.

In some embodiments, the second terminal may send first information to at least one first terminal, where the first information may be used to indicate a first cycle duration and unoccupied time domain positions in the first cycle.

After receiving the first access information, the first terminal can determine the second cycle duration of the second cycle for sending the reference signal by the first terminal based on the received first cycle duration, and based on the unoccupied time domain positions in the first cycle, determine the time domain position for sending the reference signal from the unoccupied time domain positions in the second cycle.

In some embodiments, the second terminal may send first information to at least one first terminal, where the first information may be used to indicate a first cycle duration corresponding to the first cycle and a time domain position allocated to the reference signal in the first cycle.

After receiving the first information, the first terminal can determine the second cycle duration of the second cycle for sending the reference signal by the first terminal based on the received first cycle duration, and determine the time domain position for sending the reference signal in the second cycle based on the time domain position allocated to the reference signal in the first cycle.

In some embodiments, the first information sent by the second terminal to at least one first terminal may also be used to indicate the starting position of the time period for the first terminal to periodically send the reference signal in the system frame. The first terminal may determine the starting position of the time period for the first terminal to periodically send the reference signal in the system frame based on the first information, that is, determine the boundary of the second period corresponding to the first terminal in the system frame.

In some embodiments, reference may be made to other optional embodiments described before or after the description corresponding to FIG. 2 .

In some embodiments, the sidelink communication technology can support direct communication between a terminal (also called a user equipment (UE)) and a terminal. In the sidelink communication mode, it is mainly based on the transmission and reception of omnidirectional antennas. However, in some frequency bands, such as the frequency band of Frequency Range 2 (FR2), the coverage performance of SideLink based on omnidirectional antenna reception and transmission is limited. In order to further enhance the coverage performance of UE, SideLink can adopt beam-based reception and transmission.

The side link may also be called a side link, an edge link, a side link, a secondary link, etc.

The transmission of reference signals in SideLink can support non-periodic configuration, and the transmission of the non-periodic reference signals The transmission is not independent and needs to be sent together with the SideLink data. For beam-based SideLink communication, in order to more effectively manage the beam and detect beam failure, the configuration of the periodic reference signal can be used.

For the beam failure detection process in SideLink, the receiver of the reference signal needs to calculate its reference signal received power (RSRP) on the resources of the pre-configured periodic reference signal and compare it with the preset threshold, and then determine whether there is a beam failure based on the comparison result.

Since SideLink communication supports direct communication between terminals, unicast connections may be established between multiple terminals. At the same time, in beam-based SideLink transmission, different terminal pairs (UE pairs) communicate using different simulated transmit and receive beams.

When a receiving end establishes a connection with multiple transmitting ends, the configuration information carried by the PC5-RRC (Radio Resource Control) information based on the PC5 interface between the multiple transmitting ends cannot be interoperable, such as the configuration information of the periodic reference signal. Therefore, in a certain time slot, there may be a situation where multiple transmitting ends send reference signals at the same time. Correspondingly, for the receiving end, there may be a situation where the resources of the reference signals overlap in the configuration information of the periodic reference signals received from the multiple transmitting ends. In this case, the receiving end cannot clearly know which analog receiving beam should be used to receive the reference signal.

An embodiment of the present disclosure proposes a method for sending a sidelink periodic reference signal. FIG3A is a schematic flow chart of a method for sending a sidelink periodic reference signal according to an embodiment of the present disclosure. The method for sending a sidelink periodic reference signal shown in this embodiment can be performed by a first terminal. The first terminal is a transmitter of a reference signal.

As shown in FIG3A , the sidelink periodic reference signal sending method may include the following steps:

In step S301, first information is received from a second terminal, where the first information is used to instruct the first terminal to periodically send a reference signal.

In some embodiments, a SideLink connection may be established between the first terminal and the second terminal, and the first terminal may send a reference signal to the second terminal based on a beam according to the configuration of the reference signal.

The reference signal may be a reference signal for beam failure detection, for example, a channel state information reference signal (CSI-RS) or a primary synchronization signal (PSS). For simplicity, CSI-RS is used as an example in the following embodiments.

Furthermore, the reference signal may be a reference signal sent aperiodically or periodically. A reference signal, for example, the reference signal may be a CSI-RS sent periodically.

Furthermore, the configuration of the reference signal may be determined in various ways, for example, may be determined by one of the following ways: protocol pre-definition; high-level indication; or carried in the first information sent by the second terminal to the first terminal.

In some embodiments, after the first terminal establishes a SideLink connection with the second terminal, the first terminal may first determine the configuration of the SCI-RS to be periodically sent to the second terminal, and may send the configuration of the CSI-RS to the second terminal through messages such as PC5-RRC or SCI. The first terminal may periodically send the CSI-RS to the second terminal using an analog transmit beam corresponding to the second terminal based on the configuration. Accordingly, the second terminal periodically receives the CSI-RS sent by the first terminal from the first terminal using an analog receive beam corresponding to the first terminal based on the received configuration.

In some embodiments, after establishing a SideLink connection between the first terminal and the second terminal, the first terminal can receive first information from the second terminal, where the first information is used to instruct the first terminal to periodically send CSI-RS to the second terminal. The first terminal can determine the configuration for periodically sending CSI-RS based on the first information.

If the first information received by the first terminal indicates the configuration of the CSI-RS, the first terminal may periodically send the CSI-RS to the second terminal using the simulated transmit beam corresponding to the second terminal based on the configuration of the CSI-RS indicated by the first information. Correspondingly, the second terminal periodically receives the CSI-RS sent by the first terminal from the first terminal using the simulated receive beam corresponding to the first terminal.

If the first information received by the first terminal does not indicate the configuration of the CSI-RS, the first terminal can autonomously determine the configuration of the CSI-RS and then send the configuration of the CSI-RS to the second terminal. Then, the first terminal can periodically send the CSI-RS to the second terminal based on the configuration using the simulated transmit beam corresponding to the second terminal. Correspondingly, the second terminal periodically receives the CSI-RS sent by the first terminal from the first terminal using the simulated receive beam corresponding to the first terminal based on the received configuration.

In some embodiments, after establishing a SideLink connection with the first terminal, the second terminal may determine the configuration of the CSI-RS corresponding to the first terminal, and then send first information to the first terminal, where the first information is used to instruct the first terminal to periodically send CSI-RS to the second terminal. The first terminal determines the configuration of periodically sending CSI-RS to the second terminal based on the reception of the first information, and periodically sends CSI-RS to the second terminal using the simulated transmit beam corresponding to the second terminal based on the configuration. The second terminal periodically receives the CSI-RS sent by the first terminal from the first terminal using the simulated receive beam corresponding to the first terminal based on the configuration.

In some embodiments, after establishing SideLink connections with multiple first terminals, the second terminal may first determine the configuration of the CSI-RS corresponding to each first terminal according to actual needs, such as determining the resources of the CSI-RS corresponding to each first terminal, and then send first information to each first terminal respectively, wherein the first information is used to indicate each The first terminal periodically sends CSI-RS to the second terminal, so that each first terminal determines the configuration of periodically sending CSI-RS based on the received first information. Each first terminal can periodically send CSI-RS to the second terminal using the simulated transmission beam corresponding to the second terminal based on the configuration of periodically sending CSI-RS. Correspondingly, the second terminal can periodically receive the corresponding CSI-RS from each first terminal using the simulated reception beam corresponding to each first terminal.

In some embodiments, after establishing SideLink connections with multiple first terminals, the second terminal may determine the configuration of periodically receiving the corresponding CSI-RS from each first terminal, and based on the configuration of the CSI-RS corresponding to each first terminal, use the simulated receiving beam corresponding to each first terminal to receive the CSI-RS from each first terminal. The configuration of the CSI-RS corresponding to each first terminal may be indicated by a higher layer of the second terminal, or indicated by each first terminal respectively.

Since the first terminal cannot know the configuration of periodically sending CSI-RS by other first terminals, when the second terminal receives CSI-RS corresponding to each first terminal, there may be overlap or conflict between multiple CSI-RS, for example, the resources occupied by multiple CSI-RS overlap or conflict. As shown in Figure 3B, the multiple first terminals connected to the second terminal include UE1, UE2 and UE3, and the second terminal receives the configuration of CSI-RS periodically sent by UE1, UE2 and UE3 respectively; wherein, the CSI-RS corresponding to UE1 occupies time slots S1, S4, S7; the CSI-RS corresponding to UE2 occupies time slots S1, S3, S5, S7; the CSI-RS corresponding to UE3 occupies time slots S2, S4, S6, S8. It can be seen that in time slot S1, the CSI-RS corresponding to UE1 and UE2 conflict, in time slot S4, the CSI-RS corresponding to UE1 and UE3 conflict, and in time slot S7, the CSI-RS corresponding to UE1 and UE2 conflict.

When the second terminal determines that the CSI-RS periodically sent by multiple first terminals overlap or conflict, it can send first information to the corresponding first terminal, wherein the first information is used to instruct the first terminal to adjust the configuration of the periodically sent CSI-RS. After receiving the first information, the first terminal can adjust the configuration of the periodically sent CSI-RS so that the adjusted reference signal no longer overlaps or conflicts.

After receiving the first information, the first terminal may re-determine the configuration of the periodically transmitted reference signal according to the first information, and periodically transmit the reference signal to the second terminal using the analog transmit beam corresponding to the second terminal based on the updated configuration. Correspondingly, the second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the updated configuration.

It can be seen from the technical solution of the above embodiment that the first terminal can periodically send a reference signal to the second terminal based on the first information sent by the second terminal. Since the second terminal has mastered the reference signals sent by multiple first terminals connected to it, By considering the configuration of the reference signal, it is possible to determine whether there is overlap or conflict between the reference signals, and determine the configuration of each reference signal according to the actual situation, so as to avoid overlap or conflict between the reference signals, and avoid the failure of reference signal reception due to the inability of the second terminal to clearly simulate the receiving beam, thereby not having any impact on beam failure detection and beam failure recovery.

In some embodiments, after establishing a SideLink connection with the first terminal, the second terminal may determine the configuration of the reference signal periodically sent to the first terminal, wherein the configuration of the reference signal may include resources for the second terminal to receive the reference signal periodically sent by the first terminal. If the second terminal determines that the resources of the reference signal periodically sent by the first terminal overlap or conflict with the resources of the reference signal sent by other terminals, the second terminal may send the first information to the first terminal.

The first information may be used to instruct the first terminal to adjust the configuration of a reference signal sent periodically.

After receiving the first information from the second terminal, the first terminal may adjust the configuration of the periodically transmitted reference signal based on the first information, and periodically transmit the reference signal using the analog transmit beam corresponding to the second terminal based on the adjusted configuration. The second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the adjusted configuration.

In some embodiments, the first information can be used to indicate at least one of the following: overlap or conflict between the reference signal and reference signals sent by other terminals; the first cycle duration corresponding to the first cycle; the time domain position allocated to the reference signal in the first cycle; the unoccupied time domain position in the first cycle; the starting position of the time period in the system frame during which the first terminal sends the reference signal.

The first period may be a receiving period used by the second terminal when periodically receiving a reference signal from at least one first terminal. The second terminal may allocate corresponding time domain resources to the reference signal sent by each first terminal in the first period, and use the analog receiving beam corresponding to the first terminal to receive the reference signal sent by the first terminal in the time domain resources corresponding to the reference signal sent by the first terminal. For example, a time slot is allocated to each first terminal in the first period, and the analog receiving beam corresponding to the first terminal is used to receive the reference signal sent by the first terminal in the time slot corresponding to each first terminal in the first period.

The first cycle duration may indicate the duration of the receiving cycle used by the second terminal when receiving the reference signal; the time domain position allocated for the reference signal in the first cycle may be used to indicate the time domain resource allocated for the reference signal sent by the first terminal in the first cycle; the unoccupied time domain position in the first cycle may be used to indicate the time domain resource not allocated in the first cycle, that is, to indicate the time domain resource that the first terminal can use in the first cycle. The candidate time domain resources for sending the reference signal, the first terminal may determine the time domain resource for sending the reference signal from the candidate time domain resources.

Further, the first cycle duration can be determined according to the relevant configuration of the second terminal. For example, the first cycle duration can correspond to the number of first terminals that send reference signals to the second terminal. In one embodiment, the time domain resources contained in the first cycle at least need to satisfy the ability to allocate one time domain resource to each first terminal, that is, the number of time domain resources occupied by the first cycle duration can be greater than or equal to the number of first terminals. For example, if the number of first terminals that periodically send reference signals to the second terminal is N, the first cycle duration corresponding to the first cycle can be N time slots, and the second terminal can allocate a time slot to each first terminal within the first cycle, and use the analog receiving beam corresponding to each first terminal to receive the corresponding reference signal in the time slot corresponding to each first terminal in turn.

The first cycle duration indicated by the first information can be used to enable the first terminal to determine the second cycle duration corresponding to the second cycle used when the first terminal sends a reference signal. The second cycle can be considered as the sending cycle used by the first terminal when sending the reference signal, that is, the first terminal periodically sends the reference signal to the first terminal based on the second cycle. Among them, the second cycle duration can be M times the first cycle duration, and M is a positive integer greater than or equal to 1. If M is equal to 1, it means that the first terminal uses the same second cycle duration as the first cycle duration corresponding to the first cycle to send the reference signal; if M is greater than 1, it means that the first terminal uses a second cycle duration that is an integer multiple of the first cycle duration corresponding to the first cycle to send the reference signal. For example, if the first cycle duration corresponding to the first cycle is N time slots, the second cycle duration corresponding to the second cycle is N*M time slots. Among them, the size of M can be set according to the actual needs of the first terminal. Further, the above information indicated by the first information can be sent by the same message, or can be sent by different messages, which is not specifically limited here.

In some embodiments, the first terminal may receive first information from the second terminal, and the first information may be used to indicate that a reference signal periodically sent by the first terminal overlaps or conflicts with a reference signal sent by another terminal. After receiving the first information, the first terminal may adjust the configuration of the reference signal periodically sent by the first terminal, and send the adjusted configuration to the second terminal, so that the second terminal updates the configuration of receiving the reference signal of the first terminal according to the adjusted configuration.

The first terminal periodically sends a reference signal to the second terminal using the analog transmit beam corresponding to the second terminal based on the adjusted configuration. Correspondingly, the second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the adjusted configuration.

Further, after receiving the adjusted configuration sent by the first terminal, the second terminal may also The adjusted configuration re-determines whether the reference signal sent by the first terminal still overlaps or conflicts with the reference signals sent by other terminals; if there is still overlap or conflict, the second terminal can send the first information to the first terminal again, so that the first terminal adjusts the configuration of the reference signal again until the reference signal no longer overlaps or conflicts with the reference signals sent by other terminals; if there is no overlap or conflict, the second terminal can choose to send or not send the configuration determination information to the first terminal.

It can be seen from the above embodiments that the first terminal can adjust the configuration of periodically sending the reference signal after receiving the first information indicating that the reference signal overlaps or conflicts from the second terminal, so as to avoid overlap or conflict with the reference signals sent by other terminals, and avoid the failure of reference signal reception due to the inability of the second terminal to clearly simulate the receiving beam, thereby not having any impact on beam failure detection and beam failure recovery.

In some embodiments, the first terminal may receive first information from the second terminal, where the first information may be used to indicate a first cycle duration; the first cycle duration is the duration of a first cycle for the second terminal to receive a reference signal.

After receiving the first information, the first terminal can determine, based on the first cycle duration, a second cycle duration corresponding to the second cycle used by the first terminal to send a reference signal, wherein the second cycle duration corresponding to the second cycle can be M times the first cycle duration, and M is a positive integer greater than or equal to 1.

Further, if the duration of the second cycle is the duration of M first cycles and M is greater than 1, it can be considered that the second cycle includes M sub-cycles, the cycle duration of each sub-cycle is the duration of the first cycle, and the first terminal can determine at least one first sub-cycle from the M sub-cycles for sending reference signals, that is, the first terminal can send reference signals in the first sub-cycle of the second cycle, and not in other sub-cycles. For example, if M=3, the second cycle in which the first terminal periodically sends a reference signal can include 3 sub-cycles. If the first terminal determines the second sub-cycle of the 3 sub-cycles as the first sub-cycle, the first terminal sends a reference signal in the second sub-cycle of each second cycle.

Further, if the first terminal determines to send a reference signal to the second terminal in a first sub-period of each second period, the interval between each reference signal is the duration of the second period; if the first terminal determines to send a reference signal to the second terminal in multiple first sub-periods of each second period, the interval between two adjacent reference signals is an integer multiple of the duration of the first period. Accordingly, the second terminal can use an analog receiving beam corresponding to the first terminal at a fixed time domain position in each first period to receive the reference signal sent by the first terminal.

It can be seen from the above embodiment that the first terminal can flexibly adjust the second cycle duration corresponding to the second cycle of sending the reference signal and adjust the frequency of sending the reference signal by receiving the first cycle duration from the second terminal. This can avoid overlap or conflict with reference signals sent by other terminals, and avoid failure to receive reference signals due to the second terminal's inability to clearly simulate the receiving beam, thereby not causing any impact on beam failure detection and beam failure recovery.

In some embodiments, the first terminal may receive first information from the second terminal, and the first information may be used to indicate a first cycle duration and a time domain position that is not occupied in the first cycle. After receiving the first information, the first terminal may determine a second cycle duration of a second cycle in which the first terminal sends a reference signal based on the received first cycle duration, and determine candidate time domain resources that can be used to send a reference signal from the second cycle based on the time domain position that is not occupied in the first cycle, so as to select a time domain resource for sending a reference signal from the candidate time domain resources, and further determine a time domain position for sending the reference signal in the second cycle.

Further, if the duration of the second cycle is the duration of M first cycles, it can be considered that the second cycle includes M sub-cycles, and the cycle duration of each sub-cycle is the duration of the first cycle. The first terminal can determine at least one first sub-cycle from the M sub-cycles for sending a reference signal, and determine the candidate time domain resources that can be used to send the reference signal in the first sub-cycle based on the unoccupied time domain positions in the first cycle, and determine the time domain resources for sending the reference signal from the candidate time domain resources that can be used to send the reference signal in the first sub-cycle, and then determine the time domain position for sending the reference signal. The first terminal can send a reference signal to the second terminal using an analog transmit beam corresponding to the second terminal at the time domain position determined in the first sub-cycle of each second cycle.

Furthermore, the first terminal can send the adjusted configuration of the reference signal to the second terminal, so that the second terminal determines the time domain position allocated to the reference signal corresponding to the first terminal in the first period based on the adjusted configuration, and uses the analog receiving beam corresponding to the first terminal to periodically receive the reference signal sent by the first terminal at this time domain position in each first period.

In some embodiments, the first information received by the first terminal from the second terminal may include a resource indication for indicating adjustment of the configuration of the reference signal, which may be referred to as an adjustment indication or an adjustment codebook, and may be represented by a bitmap, for example; wherein the length of the resource indication may be used to indicate that the first period corresponds to the first period duration, for example, if the length of the resource indication is N bits, it indicates that the first period duration is N time slots, and each bit corresponds to one time slot in the N time slots; the indication content of the resource indication may be used to indicate an unoccupied time domain in the first period, for example, a bit assigned a value of 1 or 0 may be used to indicate an unoccupied time domain position in the first period.

For example, if the resource indication received by the first terminal from the second terminal is 011, it means that the first cycle duration is 3 time slots, and the first time slot corresponding to the bit of 0 in each first cycle is an unoccupied time slot. The terminal can determine that the second period duration corresponding to the second period for periodically sending CSI-RS is 3M time slots, and the first terminal can determine the first sub-period from the M sub-periods, and determine the first time slot in the first sub-period as the time slot for sending CSI-RS. The first terminal can use the analog transmission beam corresponding to the second terminal in the first time slot of the first sub-period of each second period to send a reference signal to the second terminal. Correspondingly, the second terminal can use the analog reception beam corresponding to the first terminal in the first time slot of each first period to periodically receive the reference signal sent by the first terminal.

It can be seen from the above embodiments that the first terminal can flexibly adjust the configuration of sending the reference signal by receiving the first cycle duration and the unoccupied time domain position in the first cycle from the second terminal, thereby avoiding overlap or conflict with reference signals sent by other terminals, and avoiding the failure of reference signal reception due to the inability of the second terminal to clearly simulate the receiving beam, and thus will not have any impact on beam failure detection and beam failure recovery.

In some embodiments, the first terminal may receive first information from the second terminal, and the first information may be used to indicate a first cycle duration corresponding to the first cycle and a time domain position allocated for the reference signal in the first cycle. After receiving the first information, the first terminal may determine a second cycle duration of a second cycle in which the first terminal sends a reference signal based on the received first cycle duration, and determine a time domain position for sending the reference signal in the second cycle based on the time domain position allocated for the reference signal in the first cycle.

Further, if the duration of the second cycle is the duration of M first cycles, it can be considered that the second cycle includes M sub-cycles, the cycle length of each sub-cycle is the duration of the first cycle, and the first terminal can determine at least one first sub-cycle from the M sub-cycles for sending a reference signal, and based on the time domain position allocated to the reference signal in the first cycle, determine the time domain position for sending the reference signal in the first sub-cycle as the time domain position for sending the reference signal in the second cycle; wherein, the time domain position for sending the reference signal in the first sub-cycle corresponds to the time domain position allocated to the reference signal in the first cycle.

Further, if the second terminal establishes connections with multiple first terminals, the second terminal allocates different time domain positions to reference signals corresponding to different first terminals in the first period.

In some embodiments, the first information received by the first terminal from the second terminal may include a resource indication for indicating adjustment of the configuration of the reference signal, which may be referred to as an adjustment indication or an adjustment codebook; wherein the length of the resource indication may be used to indicate that the first period corresponds to the first period duration, for example, if the length of the resource indication is N bits, it indicates that the first period duration is N time slots, and each bit corresponds to one time slot in the N time slots; the indication content of the resource indication may be used to indicate the time domain position allocated for the reference signal in the first period, for example, a bit assigned a value of 1 or 0 may be used to indicate the time domain position allocated for the reference signal in the first period. If the time domain position allocated to the reference signal in the first period is represented by a bit of 1, the N bits of the resource indication may include only one bit of 1, and the other bits are all 0, and the time slot allocated to the reference signal in the N time slots of the first period is represented by the position of the bit of 1 in the N bits.

For example, if the resource indication received by the first terminal from the second terminal is 001, it means that the first cycle duration is 3 time slots, and the third time slot corresponding to the bit of 1 in each first cycle is the time slot allocated for the reference signal. The first terminal can determine that the second cycle duration corresponding to the second cycle for periodically sending CSI-RS is 3M time slots, and the first terminal can determine the first sub-cycle from the M sub-cycles, and determine the third time slot in the first sub-cycle as the time slot for sending CSI-RS. The first terminal can use the analog transmission beam corresponding to the second terminal in the third time slot of the first sub-cycle of each second cycle to send a reference signal to the second terminal. Accordingly, the second terminal can use the analog reception beam corresponding to the first terminal in the third time slot of each first cycle to periodically receive the reference signal sent by the first terminal.

It can be seen from the above embodiments that the first terminal can flexibly adjust the configuration of sending the reference signal by receiving the first cycle duration and the time domain position allocated to the reference signal in the first cycle from the second terminal, thereby avoiding overlap or conflict with reference signals sent by other terminals, and avoiding failure of reference signal reception due to the inability of the second terminal to clearly simulate the receiving beam, and thus will not have any impact on beam failure detection and beam failure recovery.

In some embodiments, the periodic transmission of reference information by the first terminal refers to the periodic transmission of reference signals to the second terminal within a preset time period, and correspondingly, the periodic reception of reference signals by the second terminal also refers to the periodic reception of reference signals from each first terminal within the preset time period. The preset time period may include at least one second period, and the first terminal may periodically transmit reference signals to the second terminal based on the second period within the preset time period. In order to ensure that the boundaries of the second periods of different first terminals are aligned, that is, to ensure that different first terminals can start timing the second periods at the same time, the first information received by the first terminal from the second terminal may also be used to indicate the starting position of the time period for the first terminal to periodically transmit the reference signal in the system frame, that is, the starting position for starting timing the second period in the system frame. The first terminal may determine the starting position of the time period for the first terminal to periodically transmit the reference signal in the system frame based on the first information, that is, to determine the boundary of the second period corresponding to the first terminal in the system frame.

Further, the starting position may be represented by a time slot offset.

Furthermore, the starting positions of the time periods during which different first terminals periodically send reference signals in the system frame are same.

It can be seen from the above embodiments that the first terminal can align the boundary of the second period corresponding to the first terminal in the system frame by receiving the starting position of the time period in which the first terminal periodically sends the reference signal from the second terminal, thereby avoiding overlap or conflict of reference signals caused by misaligned boundaries.

In some embodiments, for the second terminal, the second terminal determines the configuration of the CSI-RS periodically sent by each first terminal connected to it according to the high-level configuration, determines the CSI-RS that may overlap according to the time domain resources occupied by each CSI-RS, and sends first information to the corresponding first terminal, wherein the first information includes a resource indication for adjusting the configuration of the CSI-RS.

Wherein, if the number of first terminals establishing a connection with the second terminal is N, the length of the resource indication is N bits, which is used to indicate that the first cycle duration corresponding to the first cycle is N time slots, and each bit in the resource indication is used to indicate the corresponding time slot;

The N-bit resource indication sent by the second terminal to different first terminals includes only one bit that is 1, and the remaining N-1 bits are 0; the position of the bit that is 1 in the resource indication indicates the time slot in which the first terminal sends the reference signal in the N time slots of the first period;

The bits that are 1 in the resource indication sent by the second terminal to different terminals are at different bit positions in the resource indication, indicating that it is sent in different time slots within the N time slots.

In order to align the boundaries of the time periods in which different first terminals send CSI-RS, the first information sent by the second terminal to the first terminal may also include the time slot offset of the time period in which the first terminal periodically sends CSI-RS in the system frame.

Different first terminals periodically send CSI-RS in different time slots within the N time slots of the first period, but if N time slots are used as the second period for sending CSI-RS, the overall time slot offset of the second period in the system frame is the same for different first terminals.

In some embodiments, for a first terminal, the first terminal receives first information sent by a second terminal, wherein the first information includes a resource indication for adjusting the configuration of the CSI-RS and a time slot offset in a system frame for a time period in which the first terminal periodically sends the CSI-RS. The first terminal can flexibly adjust the configuration of the periodically sent CSI-RS in combination with its own configuration information.

Among them, different first terminals can determine the overall time slot offset of the second period of sending CSI-RS in the system frame according to the time slot offset in the system frame, and determine the time slot for sending CSI-RS in the second period according to the resource indication. Location;

If the length of the received resource indication is N bits, the second period duration N1 corresponding to the second period configured by the first terminal is an integer multiple M of N time slots: N1=N*M, M is a positive integer, and the first terminal can flexibly determine the value of M according to the current resource configuration.

For example, if the length of the resource indication is N=3, the length of the first cycle is determined to be 3 time slots;

The first terminals that establish a connection with the second terminal include UE1, UE2, and UE3. The resource indication carried in the first information received by each first terminal from the second terminal is shown in the following Table 1:

Table 1

The first terminal UE1 determines that the second cycle duration N11 corresponding to the second cycle for sending the CSI-RS is equal to the first cycle duration according to the current time-frequency domain resource configuration of the first terminal UE1:
N11 = N*M = 3*1 = 3;

According to the resource indication 100 sent to the first terminal UE1, it is determined that the first terminal UE1 can send the CSI-RS in the first time slot of each second period.

The first terminal UE2 determines, according to the current time-frequency domain resource configuration of the first terminal UE1, that the second cycle duration N12 corresponding to the second cycle of sending the CSI-RS is equal to the first cycle duration:
N12 = N*M = 3*1 = 3;

According to the resource indication 001 sent to the first terminal UE2, it is determined that the first terminal UE1 can send the CSI-RS in the third time slot of each second period.

The first terminal UE3 determines, according to the current time-frequency domain resource configuration of the first terminal UE3, that the second cycle duration N13 corresponding to the second cycle of sending the CSI-RS is equal to twice the first cycle duration:
N13 = N*M = 3*2 = 6;

The sub-time slots consisting of the first three time slots of the second cycle are determined according to the resource indication 010 sent to the first terminal UE3. The CSI-RS is sent in the second time slot in the cycle.

The time slot offset of the second period corresponding to UE1, UE2 and UE3 based on the system frame boundary can be determined according to the value of the time slot offset reported by the second terminal.

FIG3C shows a schematic diagram of resources of CSI-RS periodically sent by different first terminals after receiving resource indication adjustment. As shown in FIG3C, the first terminals UE1, UE2 and UE3 all start timing the corresponding second period at the same time slot offset position after the start of the system frame, and send CSI-RS based on the corresponding second period respectively. Among them, for UE1, after starting to time the second period, CSI-RS is sent in the first time slot of every three time slots; for UE2, after starting to time the second period, CSI-RS is sent in the third time slot of every three time slots; for UE3, after starting to time the second period, CSI-RS is sent in the second time slot of every six time slots.

For another example, if the length of the resource indication is N=4, the length of the first cycle is determined to be 4 time slots;

The first terminals that establish a connection with the second terminal include UE1, UE2, UE3 and UE4, and the resource indication carried in the first information received by each first terminal from the second terminal is shown in the following Table 2:

Table 2

The first terminal UE1 determines that the second cycle duration N21 corresponding to the second cycle for sending the CSI-RS is equal to the first cycle duration according to the current time-frequency domain resource configuration of the first terminal UE1:
N21 = N*M = 4*1 = 4;

According to the resource indication 1000 sent to the first terminal UE1, it is determined that the first terminal UE1 can send the CSI-RS in the first time slot of each second period.

The first terminal UE2 determines, according to the current time-frequency domain resource configuration of the first terminal UE2, that the second cycle duration N22 corresponding to the second cycle for sending the CSI-RS is equal to the first cycle duration:
N22 = N*M = 4*1 = 4;

According to the resource indication 0010 sent to the first terminal UE2, it is determined that the first terminal UE1 can send the CSI-RS in the third time slot of each second period.

The first terminal UE3 determines, according to the current time-frequency domain resource configuration of the first terminal UE3, that the second cycle duration N23 corresponding to the second cycle of sending the CSI-RS is equal to twice the first cycle duration:
N23 = N*M = 4*2 = 8;

According to the resource indication 0100 sent to the first terminal UE3, it is determined that the CSI-RS is sent in the second time slot of the sub-cycle composed of the first 4 time slots of the second cycle.

The first terminal UE4 determines, according to the current time-frequency domain resource configuration of the first terminal UE4, that the second cycle duration N24 corresponding to the second cycle of sending the CSI-RS is equal to twice the first cycle duration:
N24=N*M=4*2=8;

According to the resource indication 0001 sent to the first terminal UE3, it is determined that the CSI-RS is sent in the 4th time slot in the sub-cycle consisting of the last 4 time slots of the second cycle.

The time slot offset of the second period corresponding to UE1, UE2, UE3 and UE4 based on the system frame boundary can be determined according to the time slot offset value reported by the second terminal.

FIG3D shows a schematic diagram of resources of CSI-RS periodically sent by different first terminals after receiving resource indication adjustment. As shown in FIG3D, the first terminals UE1, UE2, UE3 and UE4 all start timing the corresponding second period at the same time slot offset position after the start of the system frame, and send CSI-RS based on the corresponding second period respectively. Among them, for UE1, after starting to time the second period, CSI-RS is sent in the first time slot of every 4 time slots; for UE2, after starting to time the second period, CSI-RS is sent in the third time slot of every 4 time slots; for UE3, after starting to time the second period, CSI-RS is sent in the second time slot of every 8 time slots; for UE4, after starting to time the second period, CSI-RS is sent in the eighth time slot of every 8 time slots.

In some embodiments, after establishing SideLink connections with multiple first terminals, the second terminal may periodically check whether periodically received reference signals overlap or conflict; or, after establishing a SideLink connection with a new first terminal, check whether the reference signal corresponding to the new first terminal overlaps or conflicts with the reference signals corresponding to other first terminals. If the second terminal determines that the reference signals overlap or conflict, it may send the first information to each first terminal, or send the first information to the first terminal corresponding to the reference signal with overlap or conflict. The first information is sent to reconfigure the reference signals periodically sent by each first terminal so that the reference signals no longer overlap or conflict with each other.

It should be noted that the embodiments shown in FIGS. 3A-3D may be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific implementation may be selected as needed and the present disclosure is not limited thereto.

In a second aspect, an embodiment of the present disclosure proposes a method for sending a sidelink periodic reference signal. Figure 4 is a schematic flow chart of a method for sending a sidelink periodic reference signal according to an embodiment of the present disclosure. The method for sending a sidelink periodic reference signal shown in this embodiment can be executed by a second terminal.

As shown in FIG4 , the sidelink periodic reference signal sending method may include the following steps:

In step S401, first information is sent to at least one first terminal, where the first information is used to instruct the first terminal to periodically send a reference signal.

In some embodiments, after establishing a SideLink connection with the first terminal, the second terminal may determine the configuration of the CSI-RS corresponding to the first terminal, and then send first information to the first terminal, where the first information is used to instruct the first terminal to periodically send CSI-RS to the second terminal. The first terminal determines the configuration of periodically sending CSI-RS to the second terminal based on the reception of the first information, and periodically sends CSI-RS to the second terminal using the simulated transmit beam corresponding to the second terminal based on the configuration. The second terminal periodically receives the CSI-RS sent by the first terminal from the first terminal using the simulated receive beam corresponding to the first terminal based on the configuration.

Further, the reference signal may be a reference signal that is sent aperiodically, or may be a reference signal that is sent periodically. For example, the reference signal may be a CSI-RS that is sent periodically.

In some embodiments, after establishing SideLink connections with multiple first terminals, the second terminal may first determine the configuration of the CSI-RS corresponding to each first terminal according to actual needs, such as determining the resources of the CSI-RS corresponding to each first terminal, and then send first information to each first terminal respectively, wherein the first information is used to instruct each first terminal to periodically send CSI-RS to the second terminal, so that each first terminal determines its corresponding configuration for periodically sending CSI-RS based on the received first information. Each first terminal may periodically send CSI-RS to the second terminal using an analog transmission beam corresponding to the second terminal based on the configuration for periodically sending CSI-RS. Accordingly, the second terminal may periodically receive the corresponding CSI-RS from each first terminal using an analog reception beam corresponding to each first terminal.

In some embodiments, after establishing SideLink connections with multiple first terminals, the second terminal may determine the configuration of periodically receiving the corresponding CSI-RS from each first terminal, and based on the configuration corresponding to each first terminal, The configuration of the CSI-RS uses the simulated receiving beam corresponding to each first terminal to receive the CSI-RS from each first terminal. The configuration of the CSI-RS corresponding to each first terminal may be indicated by a higher layer of the second terminal, or indicated by each first terminal respectively.

When the second terminal determines that the CSI-RS periodically sent by multiple first terminals overlap or conflict, it can send first information to the corresponding first terminal, wherein the first information is used to instruct the first terminal to adjust the configuration of the periodically sent CSI-RS. After receiving the first information, the first terminal can adjust the configuration of the periodically sent CSI-RS so that the adjusted reference signal no longer overlaps or conflicts.

After receiving the first information, the first terminal may re-determine the configuration of the periodically transmitted reference signal according to the first information, and periodically transmit the reference signal to the second terminal using the analog transmit beam corresponding to the second terminal based on the updated configuration. Correspondingly, the second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the updated configuration.

In some embodiments, after establishing a SideLink connection with the first terminal, the second terminal may determine the configuration of the reference signal periodically sent to the first terminal, wherein the configuration of the reference signal may include resources for the second terminal to receive the reference signal periodically sent by the first terminal. If the second terminal determines that the resources of the reference signal periodically sent by the first terminal overlap or conflict with the resources of the reference signal sent by other terminals, the second terminal may send the first information to the first terminal.

The first information may be used to instruct the first terminal to adjust the configuration of a reference signal sent periodically.

After receiving the first information from the second terminal, the first terminal may adjust the configuration of the periodically transmitted reference signal based on the first information, and periodically transmit the reference signal using the analog transmit beam corresponding to the second terminal based on the adjusted configuration. The second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the adjusted configuration.

In some embodiments, the first information is used to indicate at least one of the following: overlap or conflict between the reference signal and reference signals sent by other terminals; first cycle duration; the first cycle duration is the duration of the first cycle for the second terminal to receive the reference signal; the time domain position allocated to the reference signal in the first cycle; an unoccupied time domain position in the first cycle; the starting position of the time period for the first terminal to send the reference signal in the system frame.

Furthermore, the above information indicated by the first information may be sent by the same message, or may be sent by different messages, which is not specifically limited here.

In some embodiments, the second terminal may send first information to at least one first terminal, where the first information may be used to indicate that a reference signal periodically sent by the first terminal overlaps or conflicts with a reference signal sent by other terminals.

After receiving the first information, the first terminal may adjust the configuration of the reference signal periodically sent by the first terminal, and send the adjusted configuration to the second terminal, so that the second terminal updates the configuration of receiving the reference signal of the first terminal according to the adjusted configuration.

The first terminal periodically sends a reference signal to the second terminal using the analog transmit beam corresponding to the second terminal based on the adjusted configuration. Correspondingly, the second terminal receives the reference signal using the analog receive beam corresponding to the first terminal based on the adjusted configuration.

Furthermore, after receiving the adjusted configuration sent by the first terminal, the second terminal can also re-determine whether the reference signal sent by the first terminal still overlaps or conflicts with the reference signals sent by other terminals based on the adjusted configuration; if there is still overlap or conflict, the second terminal can send the first information to the first terminal again to enable the first terminal to adjust the configuration of the reference signal again until the reference signal no longer overlaps or conflicts with the reference signals sent by other terminals; if there is no overlap or conflict, the second terminal can choose to send or not send the configuration determination information to the first terminal.

In some embodiments, the second terminal may send first information to at least one first terminal, and the first information may be used to indicate a first cycle duration; the first cycle duration is the duration of a first cycle for the second terminal to receive a reference signal. The first cycle duration may be determined according to the relevant configuration of the second terminal, for example, the first cycle duration may correspond to the number of first terminals that send reference signals to the second terminal, and the number of time domain resources occupied by the first cycle duration needs to be greater than or equal to the number of terminals that periodically send reference signals to the second terminal.

After receiving the first information, the first terminal can determine, based on the first cycle duration, a second cycle duration corresponding to a second cycle for sending a reference signal by the first terminal, wherein the second cycle duration corresponding to the second cycle can be M times the first cycle duration, and M is a positive integer greater than 1.

Further, if the duration of the second cycle is the duration of M first cycles, it can be considered that the second cycle includes M sub-cycles, the cycle length of each sub-cycle is the length of the first cycle, and the first terminal can determine at least one first sub-cycle from the M sub-cycles for sending a reference signal, that is, the first terminal can send a reference signal in the first sub-cycle in the second cycle, but not in other sub-cycles.

Further, if the first terminal determines to send to the second terminal in a first sub-period of each second period reference signal, the interval between each reference signal is the second cycle duration; if the first terminal determines to send a reference signal to the second terminal in multiple first sub-periods of each second cycle, the interval between two adjacent reference signals is an integer multiple of the first cycle duration. Accordingly, the second terminal can use the analog receiving beam corresponding to the first terminal at a fixed time domain position in each first cycle to receive the reference signal sent by the first terminal.

In some embodiments, the first cycle duration corresponds to the number of first terminals sending reference signals to the second terminal.

In some embodiments, the second terminal may send first information to at least one first terminal, where the first information may be used to indicate a first cycle duration and unoccupied time domain positions in the first cycle.

After receiving the first access information, the first terminal can determine the second cycle duration of the second cycle for sending the reference signal by the first terminal based on the received first cycle duration, and based on the unoccupied time domain positions in the first cycle, determine the time domain position for sending the reference signal from the unoccupied time domain positions in the second cycle.

Further, if the duration of the second cycle is the duration of M first cycles, it can be considered that the second cycle includes M sub-cycles, the cycle duration of each sub-cycle is the duration of the first cycle, and the first terminal can determine at least one first sub-cycle from the M sub-cycles for sending a reference signal, and determine the unoccupied time domain position in the first sub-cycle based on the unoccupied time domain position in the first cycle, and determine the time domain position for sending the reference signal from the unoccupied time domain position in the first sub-cycle. The first terminal can send a reference signal to the second terminal using an analog transmit beam corresponding to the second terminal at the time domain position determined in the first sub-cycle of each second cycle.

Furthermore, the first terminal can send the adjusted configuration of the reference signal to the second terminal, so that the second terminal determines the time domain position allocated to the reference signal corresponding to the first terminal in the first period based on the adjusted configuration, and uses the analog receiving beam corresponding to the first terminal to periodically receive the reference signal sent by the first terminal at this time domain position in each first period.

In some embodiments, the first information sent by the second terminal to at least one first terminal may include a resource indication for indicating adjustment of the configuration of the reference signal, which may be referred to as an adjustment indication or an adjustment codebook, and may be represented by a bitmap, for example; wherein the length of the resource indication may be used to indicate that the first cycle corresponds to the first cycle duration, for example, if the length of the resource indication is N bits, it indicates that the first cycle duration is N time slots, and each bit corresponds to one time slot in the N time slots; the indication content of the resource indication may be used to indicate an unoccupied time domain in the first cycle.

In some embodiments, the second terminal may send first information to at least one first terminal, wherein the first information The information may be used to indicate a first cycle duration corresponding to the first cycle and a time domain position allocated to the reference signal in the first cycle.

After receiving the first information, the first terminal can determine the second cycle duration of the second cycle for sending the reference signal by the first terminal based on the received first cycle duration, and determine the time domain position for sending the reference signal in the second cycle based on the time domain position allocated to the reference signal in the first cycle.

Further, if the duration of the second cycle is the duration of M first cycles, it can be considered that the second cycle includes M sub-cycles, the cycle length of each sub-cycle is the duration of the first cycle, and the first terminal can determine at least one first sub-cycle from the M sub-cycles for sending a reference signal, and based on the time domain position allocated to the reference signal in the first cycle, determine the time domain position for sending the reference signal in the first sub-cycle as the time domain position for sending the reference signal in the second cycle; wherein, the time domain position for sending the reference signal in the first sub-cycle corresponds to the time domain position allocated to the reference signal in the first cycle.

Further, if the second terminal establishes connections with multiple first terminals, the second terminal allocates different time domain positions to reference signals corresponding to different first terminals in the first period.

In some embodiments, the first information sent by the second terminal to at least one first terminal may include a resource indication for indicating adjustment of the configuration of the reference signal, which may be referred to as an adjustment indication or an adjustment codebook; wherein the length of the resource indication may be used to indicate that the first cycle corresponds to the first cycle duration, for example, if the length of the resource indication is N bits, it indicates that the first cycle duration is N time slots, and each bit corresponds to one time slot in the N time slots; the indication content of the resource indication may be used to indicate the time domain position allocated to the reference signal in the first cycle.

In some embodiments, in order to ensure that the boundaries of the second periods of different first terminals are aligned, the first information sent by the second terminal to at least one first terminal may also be used to indicate the starting position of the time period for the first terminal to periodically send the reference signal in the system frame. The first terminal may determine the starting position of the time period for the first terminal to periodically send the reference signal in the system frame based on the first information, that is, determine the boundary of the second period corresponding to the first terminal in the system frame.

Further, the starting position may be represented by a time slot offset.

Furthermore, the time periods in which different first terminals periodically send reference signals have the same starting position in the system frame.

It should be noted that the embodiment shown in FIG. 4 can be implemented independently or in combination with at least one other embodiment of the present disclosure. The embodiments may be combined for implementation and may be selected as needed, and the present disclosure is not limited thereto.

In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, terms such as "moment", "time point", "time", and "time position" can be interchangeable, and terms such as "duration", "period", "time window", "window", and "time" can be interchangeable.

In some embodiments, terms such as "component carrier (CC)", "cell", "frequency carrier", and "carrier frequency" can be used interchangeably.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

Corresponding to the aforementioned embodiment of the method for sending a sidelink periodic reference signal, the present disclosure also provides embodiments of a terminal and a network device.

An embodiment of the present disclosure also proposes a terminal, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein when the executable instructions are executed by the processor, the terminal executes the sidelink periodic reference signal sending method described in the above embodiment.

FIG5 is a schematic block diagram of a device structure of a first terminal according to an embodiment of the present disclosure. As shown in FIG5 , the first terminal 500 may be a sidelink periodic reference signal sending device, and the device includes a processing module 501 and a transceiver module 502 .

In some embodiments, the transceiver module 502 is used to receive first information from the second terminal, wherein the first information The information is used to indicate the periodic sending of the reference signal; the processing module 501 is used to determine the configuration of the reference signal based on the first information.

Furthermore, the first information is used to indicate at least one of the following: overlap or conflict between the reference signal and reference signals sent by other terminals; duration of the first cycle; duration of the first cycle being the duration of the first cycle for the second terminal to receive the reference signal; a time domain position allocated to the reference signal in the first cycle; an unoccupied time domain position in the first cycle; and a starting position in the system frame of the time period for the first terminal to send the reference signal.

Furthermore, the first cycle duration corresponds to the number of first terminals that send reference signals to the second terminal.

Furthermore, the processing module 501 is also used to determine at least one of the following configurations of the reference signal based on the first information: determine a second cycle duration corresponding to a second cycle in which the first terminal sends a reference signal; wherein the second cycle duration is M times the first cycle duration, and M is a positive integer greater than 1; determine a time domain position for sending the reference signal in the second cycle; and determine a starting position of the time period in a system frame.

Furthermore, the time period includes at least one of the second cycles.

Further, the processing module 501 is used to determine a first sub-period among the M sub-periods included in the second period, and the period length of the sub-period is the first period length; determine the time domain position for sending the reference signal in the first sub-period as the time domain position for sending the reference signal in the second period; wherein the time domain position for sending the reference signal in the first sub-period corresponds to the time domain position allocated to the reference signal in the first period.

Furthermore, the reference signal is a reference signal used for beam failure detection.

Furthermore, the reference signal is a channel state information reference signal CSI-RS.

It should be noted that the modules included in the terminal are not limited to the modules described in the above embodiments, and may also include other modules, such as a storage module, a display module, etc.

FIG6 is a schematic block diagram of a second terminal according to an embodiment of the present disclosure. As shown in FIG6 , the second terminal 600 may be a sidelink periodic reference signal sending device, and the device includes a processing module 601 and a transceiver module 602 .

In some embodiments, the processing module 601 is used to determine the first signal corresponding to at least one first terminal. The first information is used to instruct the first terminal to periodically send a reference signal; the transceiver module 602 is used to send the first information to the at least one first terminal.

Furthermore, the first information is used to indicate at least one of the following: overlap or conflict between the reference signal and reference signals sent by other terminals; duration of the first cycle; duration of the first cycle being the duration of the first cycle for the second terminal to receive the reference signal; a time domain position allocated to the reference signal in the first cycle; an unoccupied time domain position in the first cycle; and a starting position in the system frame of the time period for the first terminal to send the reference signal.

Furthermore, the first cycle duration corresponds to the number of first terminals that send reference signals to the second terminal.

It should be noted that the modules included in the network device are not limited to the modules described in the above embodiments, and may also include other modules, such as a storage module, a display module, etc.

For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

An embodiment of the present disclosure also proposes a communication device, comprising: one or more processors; a memory coupled to the processor, wherein the memory stores executable instructions, wherein when the executable instructions are executed by the processor, the processor calls the executable instructions so that the communication device executes the sidelink periodic reference signal sending method described in the above optional embodiment.

An embodiment of the present disclosure also proposes a communication system, comprising a second terminal and at least one first terminal, wherein the first terminal is configured to implement the sidelink periodic reference signal sending method described in the above optional embodiment, and the second terminal is configured to implement the sidelink periodic reference signal sending method described in the above optional embodiment.

An embodiment of the present disclosure further proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the sidelink periodic reference signal sending method described in the above optional embodiment.

The present disclosure also provides a device for implementing any of the above methods. For example, a device is provided. The device includes a unit or module for implementing each step executed by the terminal in any of the above methods. For example, another device is also proposed, including a unit or module for implementing each step executed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits. The hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in the form of hardware circuits.

In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it may also be a hardware circuit designed for artificial intelligence, which may be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DLP), or a computer programmable logic device (CLP). Processing Unit, DPU) etc.

FIG7 is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. The communication device 7100 may be a terminal (e.g., a first terminal or a second terminal, etc.), or may be a chip, a chip system, or a processor, etc. that supports the terminal to implement any of the above methods. The communication device 7100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

As shown in FIG. 7 , the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a dedicated processor, for example, 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 base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program. The processor 7101 is used to call instructions so that the communication device 7100 executes any of the above methods.

In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memory 7102 may also be outside the communication device 7100.

In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps such as sending and receiving in the above method are executed by the transceiver 7103, and the other steps are executed by the processor 7101.

In some embodiments, the transceiver may include a receiver and a transmitter, and the receiver and the transmitter may be separate or integrated. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

The communication device 7100 described in the above embodiment may be a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, Wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.; (6) Others, etc.

Fig. 8 is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. In the case where the communication device 7100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 8200 shown in Fig. 8, but the present disclosure is not limited thereto.

The chip 8200 includes one or more processors 8201, and the processor 8201 is used to call instructions so that the chip 8200 executes any of the above methods.

In some embodiments, the chip 8200 further includes one or more interface circuits 8202, the interface circuits 8202 are connected to the memory 8203, the interface circuits 8202 can be used to receive signals from the memory 8203 or other devices, and the interface circuits 8202 can be used to send signals to the memory.

8203 or other devices to send signals. For example, the interface circuit 8202 can read the instructions stored in the memory 8203 and send the instructions to the processor 8201. Optionally, the terms such as interface circuit, interface, transceiver pin, transceiver, etc. can be replaced with each other.

In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memory 8203 may be outside the chip 8200.

The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above methods. Optionally, the program product is a computer program product.

The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims (18)

A method for sending a sidelink periodic reference signal, characterized in that it is performed by a first terminal, and the method includes: First information is received from a second terminal, where the first information is used to instruct the first terminal to periodically send a reference signal. The method according to claim 1, wherein the first information is used to indicate at least one of the following: The reference signal overlaps or conflicts with reference signals sent by other terminals; First cycle duration; the first cycle duration is the duration of the first cycle for the second terminal to receive the reference signal; a time domain position allocated to the reference signal in the first period; time domain positions that are not occupied in said first period; The starting position of the time period in which the first terminal sends the reference signal in the system frame. The method according to claim 2 is characterized in that the first cycle duration corresponds to the number of first terminals sending reference signals to the second terminal. The method according to claim 2 or 3, characterized in that the method further comprises: Determine at least one of the following in the configuration of the reference signal according to the first information: Determine a second cycle duration corresponding to a second cycle in which the first terminal sends a reference signal; wherein the second cycle duration is M times the first cycle duration, and M is a positive integer greater than 1; Determining a time domain position for sending the reference signal in the second period; The starting position of the time period in the system frame is determined. The method according to claim 4, characterized in that the time period includes at least one of the second cycles. The method according to claim 5, characterized in that the determining the time domain position for sending the reference signal in the second period comprises: Determine a first sub-cycle among the M sub-cycles included in the second cycle, where the period length of the sub-cycle is the first period length; Determine the time domain position of sending the reference signal in the first sub-cycle as the time domain position of sending the reference signal in the second sub-cycle The time domain position of the reference signal; wherein the time domain position of sending the reference signal in the first sub-period corresponds to the time domain position allocated to the reference signal in the first period. The method according to any one of claims 1-6 is characterized in that the reference signal is a reference signal used for beam failure detection. The method according to any one of claims 1 to 7 is characterized in that the reference signal is a channel state information reference signal CSI-RS. A method for sending a sidelink periodic reference signal, characterized in that it is performed by a second terminal, and the method includes: First information is sent to a first terminal, where the first information is used to instruct the first terminal to periodically send a reference signal. The method according to claim 9, wherein the first information is used to indicate at least one of the following: The reference signal overlaps or conflicts with reference signals sent by other terminals; First cycle duration; the first cycle duration is the duration of the first cycle for the second terminal to receive the reference signal; a time domain position allocated to the reference signal in the first period; time domain positions that are not occupied in said first period; The starting position of the time period in which the first terminal sends the reference signal in the system frame. The method according to claim 10 is characterized in that the first cycle duration corresponds to the number of first terminals sending reference signals to the second terminal. A method for sending a sidelink periodic reference signal, comprising: The second terminal sends first information to the first terminal, where the first information is used to instruct the first terminal to periodically send a reference signal; The first terminal determines a configuration of the reference signal based on the first information. A sidelink periodic reference signal sending device, characterized by comprising: A transceiver module, configured to receive first information from a second terminal, wherein the first information is used to indicate periodic transmission of a reference signal; A processing module is used to determine the configuration of the reference signal based on the first information. A sidelink periodic reference signal sending device, characterized by comprising: a processing module, configured to determine first information corresponding to at least one first terminal, wherein the first information is used to instruct the first terminal to periodically send a reference signal; The transceiver module is used to send the first information to the at least one first terminal. A terminal, characterized by comprising: one or more processors; A memory coupled to the processor, wherein the memory stores executable instructions, wherein when the executable instructions are executed by the processor, the terminal executes the sidelink periodic reference signal sending method according to any one of claims 1 to 8, or the sidelink periodic reference signal sending method according to any one of claims 9 to 11. A communication device, comprising: one or more processors; A memory coupled to the processor, wherein the memory stores executable instructions, wherein when the executable instructions are executed by the processor, the processor is used to call instructions so that the communication device performs the sidelink periodic reference signal sending method according to any one of claims 1 to 8, or the sidelink periodic reference signal sending method according to any one of claims 9 to 11. A communication system, characterized in that it includes a second terminal and at least one first terminal, wherein the first terminal is configured to implement the sidelink periodic reference signal sending method described in any one of claims 1-8, and the second terminal is configured to implement the sidelink periodic reference signal sending method described in any one of claims 9-11. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes the sidelink periodic reference signal sending method described in any one of claims 1 to 8, or the sidelink periodic reference signal sending method described in any one of claims 9 to 11.