CN113557758A

CN113557758A - Method for reporting capacity of sidelink, terminal equipment and network equipment

Info

Publication number: CN113557758A
Application number: CN201980093901.0A
Authority: CN
Inventors: 卢前溪; 赵振山; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2021-10-26
Anticipated expiration: 2039-08-09
Also published as: CN113557758B; WO2021026708A1

Abstract

The embodiment of the application relates to a method for reporting the capability of a sidelink, a terminal device and a network device, wherein the method comprises the following steps: the method comprises the steps that a first terminal device reports at least one first index to a first network device, wherein the at least one first index is used for identifying first side communication capacity supported by the first terminal device. The method, the terminal device and the network device for reporting the capability of the sidelink in the embodiment of the application can realize the reporting of the capability of the terminal device in the vehicle networking system with lower signaling overhead.

Description

Method for reporting capacity of sidelink, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a capability reporting method for a sidelink, a terminal device, and a network device.

Background

The car networking system adopts a Sidelink (SL) transmission technology based on Device to Device (D2D), which is different from a mode that communication data in a traditional Long Term Evolution (LTE) system is received or sent through a base station, and adopts a mode that terminal devices directly communicate with the terminal devices, so that the car networking system has higher spectral efficiency and lower transmission delay.

After the terminal device accesses the network, the network device needs to schedule the terminal device. The capabilities supported by different terminal devices may be different, and when the network device schedules the terminal device, it needs to know the capabilities supported by the terminal device, and then performs reasonable scheduling on the terminal device according to the capabilities supported by the terminal device. Therefore, it is very important that the terminal device reports the capability supported by itself to the network device.

Therefore, how to report the capability supported by the terminal device with a small signaling overhead in the car networking system is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method for reporting the capability of a sidelink, a terminal device and a network device, which can realize the reporting of the capability of the terminal device in an Internet of vehicles system with lower signaling overhead.

In a first aspect, a method for capability reporting of a sidelink is provided, where the method includes: the method comprises the steps that a first terminal device reports at least one first index to a first network device, wherein the at least one first index is used for identifying first side communication capacity supported by the first terminal device.

In a second aspect, a method for capability reporting of a sidelink is provided, the method comprising: the first terminal device receives at least one third index sent by a second terminal device, wherein the at least one third index refers to a second side communication capability for identifying communication between the second terminal device and the first terminal device.

In a third aspect, a method for capability reporting of a sidelink is provided, where the method includes: the second terminal device sends at least one third index to the first terminal device, the at least one third index referencing a second side-communication capability identifying communication between the second terminal device and the first terminal device.

In a fourth aspect, a method for capability reporting of a sidelink is provided, the method comprising: the method comprises the steps that a first network device receives at least one first index reported by a first terminal device, wherein the at least one first index is used for identifying first side communication capacity supported by the first terminal device.

In a fifth aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a terminal device is provided for executing the method in the second aspect or its implementation manners.

In particular, the network device comprises functional modules for performing the methods of the second aspect or its implementations described above.

In a seventh aspect, a terminal device is provided, configured to perform the method in the third aspect or each implementation manner thereof.

In particular, the network device comprises functional modules for performing the method of the third aspect or its implementations.

In an eighth aspect, a network device is provided for executing the method in the fourth aspect or its implementation manners.

In particular, the network device comprises functional modules for performing the methods of the fourth aspect or its implementations.

In a ninth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a tenth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

In an eleventh aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the third aspect or each implementation manner thereof.

In a twelfth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the fourth aspect or each implementation manner thereof.

In a thirteenth aspect, there is provided an apparatus for implementing the method in any one of the first to fourth aspects or implementations thereof.

Specifically, the apparatus includes: a processor configured to call and run the computer program from the memory, so that the apparatus on which the apparatus is installed performs the method according to any one of the first to fourth aspects or the implementation manners thereof.

Optionally, the device is a chip.

In a fourteenth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to fourth aspects or implementations thereof.

In a fifteenth aspect, a computer program product is provided, comprising computer program instructions to cause a computer to perform the method of any one of the first to fourth aspects or implementations thereof.

In a sixteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to fourth aspects or implementations thereof.

According to the technical scheme, in the vehicle networking system, when the terminal equipment needs to report the sidetracking communication capacity supported by the terminal equipment to the network equipment, the terminal equipment can report the index corresponding to the sidetracking communication capacity to the network equipment without reporting the specific sidetracking communication capacity. The signaling overhead occupied by the reporting index is smaller than that occupied by the reporting side traffic capacity, so that the reporting of the terminal equipment capacity in the vehicle networking system can be realized with lower signaling overhead.

Drawings

Fig. 1 is a diagram of an application scenario of a sidelink according to an embodiment of the present application.

Fig. 2 is a diagram of another application scenario of a sidelink according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a method for reporting capability of a sidelink according to an embodiment of the present application.

Fig. 4 is a flowchart of a specific implementation of a method for reporting capability of a sidelink according to an embodiment of the present application.

Fig. 5 is a schematic diagram of another method for reporting capability of a sidelink according to an embodiment of the present disclosure.

Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of an apparatus according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Various embodiments are described herein in connection with a network device. A network device may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Alternatively, the Network device may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, a Base Station gNB in a New Radio (NR) system, a Radio controller in a Cloud Radio Access Network (CRAN), or a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, and the like.

The embodiments of the present application have been described with reference to terminal devices. Terminal devices include, but are not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Fig. 1 and 2 are schematic diagrams of an application scenario of the embodiment of the present application. Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Specifically, the terminal device 20 and the terminal device 30 may communicate in the communication mode of D2D, and when performing D2D communication, the terminal device 20 and the terminal device 30 communicate directly through a D2D link, i.e., SL, as shown in fig. 1 or fig. 2, for example. In fig. 1, terminal device 20 and terminal device 30 communicate via a sidelink, the transmission resources of which are allocated by the network device. In fig. 2, terminal device 20 and terminal device 30 communicate via a sidelink, and their transmission resources are selected by the terminal device autonomously without the need for the network device to allocate transmission resources.

Alternatively, the scenario shown in fig. 1 may be used in a Vehicle-to-Vehicle (V2V) scenario, and the mode shown in fig. 1 may be referred to as mode 3, where transmission resources of the Vehicle-mounted terminal are allocated by the base station, and the Vehicle-mounted terminal may perform data transmission on the sidelink according to the resources allocated by the base station. It should be understood that the base station may allocate resources for a single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

Alternatively, the scenario shown in fig. 2 may be used for the V2V scenario, the mode shown in fig. 2 may be referred to as mode 4, and the vehicle-mounted terminal adopts a transmission manner of listening (sending) + reserving (reservation). The vehicle-mounted terminal can acquire an available transmission resource set in the resource pool in an interception mode, and then randomly selects one resource from the set to transmit data. Because the service in the car networking system has a periodic characteristic, the terminal device usually adopts a semi-static transmission mode, that is, after the terminal device selects one transmission resource, the resource can be continuously used in a plurality of transmission cycles, so that the probability of resource reselection and resource conflict can be reduced. The terminal equipment can carry the information of the reserved secondary transmission resource in the control information transmitted this time, so that other terminal equipment can judge whether the resource is reserved and used by the user or not by detecting the control information of the user, and the aim of reducing resource conflict is fulfilled.

The D2D communication scheme may be used for V2V communication or Vehicle to other device (V2X) communication, or enhanced (cellular) Vehicle networking (eV 2X). In V2X communication, X may refer to any device with wireless receiving and transmitting capability, such as but not limited to a slow moving wireless device, a fast moving vehicle-mounted device, or a network control node with wireless transmitting and receiving capability. It should be understood that the embodiment of the present application is mainly applied to the scenario of V2X communication, but may also be applied to any other D2D communication scenario, and the embodiment of the present application is not limited in this respect.

The terminal device will typically have a variety of capabilities, which may include, for example, baseband capabilities, radio frequency capabilities, measurement capabilities, terminal class (category), resource allocation capabilities, and support capabilities for various optional functions. Different terminal devices may have different capabilities, and after the terminal device accesses the network, the terminal device sends the capability information of the terminal device to the network device, so that the network device can reasonably schedule the terminal device according to the capabilities supported by the terminal device. For example, the network device may allocate a suitable time-frequency resource, power, modulation and coding scheme, and the like to the terminal device according to the capability supported by the terminal device.

Taking NR system as an example, the baseband capability of the terminal device may include the terminal device's supporting capability for different subcarrier widths, and the subcarrier width supported by the terminal device may be, for example, 7.5kHz, 15kHz, 30kHz or 60 kHz. The transmission parameters may be different for different subcarrier widths. The wider the subcarrier, the shorter the corresponding symbol time, and the lower the delay, which can be applied to the scenes with higher requirements on the delay; the narrower the sub-carriers, the longer the corresponding symbol time, and the higher the delay. The network device can reasonably schedule the terminal device according to the subcarrier width reported by the terminal device.

For example, when the network device schedules the terminal device, the subcarrier width supported by the terminal device is considered, and when the subcarrier width of the terminal device is smaller, the network device may schedule according to the smaller subcarrier width. When the subcarrier width of the terminal device is large, the network device may schedule the terminal device according to the large subcarrier width.

The network device may also schedule the terminal device according to the uplink and downlink preparation time of the terminal device, for example, when the network device schedules the uplink signal, the time interval for scheduling the uplink signal cannot be smaller than the uplink preparation time of the terminal device. When the uplink preparation time of the terminal device is shorter, the network device may schedule the uplink signal at a shorter time interval; when the uplink preparation time of the terminal device is longer, the network device can schedule the uplink signal at a longer time interval.

In the LTE or NR system, the radio frequency capability of the terminal device may include the support capability of the terminal device for different frequency band combinations, the number of transmit antennas of the terminal device, and the like. The network device may schedule the terminal device according to the radio frequency capability of the terminal device.

For example, if the number of antennas of the terminal device is 2, when the network device sends data to the terminal device, the network device sends the data according to the receiving capabilities of the 2 antennas, for example, the network device may transmit the data to the terminal device at a lower transmission rate; if the number of the antennas of the terminal device is 4, the network device may transmit data to the terminal device according to the receiving capability of the 4 antennas when transmitting the data to the terminal device, for example, the network device may transmit data to the terminal device at a relatively high transmission rate.

In the LTE-V2X system, when reporting the sidelink related capability (for convenience of description, referred to as sidelink communication capability in this embodiment) to the network device, the terminal device reports the sidelink related capability by using a combination of frequency bands. For example, the terminal device may communicate on the frequency band combination 1 and the frequency band combination 2, and the terminal device may report the sidelink communication capabilities on the frequency band combination 1 and the frequency band combination 2 to the network device respectively. However, the sidestream communication capabilities in different frequency band combinations, even in each frequency band within one frequency band combination, have a considerable repetition part, and if the terminal device reports each repeated sidestream communication capability to the network device, this part of information may cause a large signaling overhead occupied by the sidestream communication capability.

In view of this, the embodiment of the present application provides a method for reporting a capability of a sidelink, which can implement reporting of a capability of a terminal device with a relatively small signaling overhead in an internet of vehicles system.

Hereinafter, the sidelink is also referred to as sidelink communication, and the uplink and downlink is also referred to as cellular communication.

Fig. 3 is a schematic flow chart diagram of a method 200 for capability reporting of a sidelink according to an embodiment of the present application. The method 200 includes at least some of the following.

In 210, a first terminal device reports at least one first index to a first network device, where the at least one first index is used to identify a first side communication capability supported by the first terminal device.

In 220, the first network device receives at least one first index reported by the first terminal device.

In the embodiment of the present application, the sidelink communication capability may include the above-mentioned radio frequency capability, baseband capability, measurement capability, discontinuous resource allocation capability, and the like.

Release 14(Rel-14) standardizes the vehicle networking technology (V2X), the main standardization content being single carrier transmission. In Rel-15LTE, eV2X extends to a multi-carrier scenario, i.e. one terminal device can transmit and receive on more than one carrier at the same time. Therefore, the sidelink communication capability of the embodiments of the present application may further include a Carrier Aggregation (CA) capability. If the first terminal device has the capability of supporting the CA, the network device may schedule the first terminal device according to the capability of supporting the CA, so as to increase the data transmission rate.

In addition, the sidestream communication capability may also include a communication mode capability. The communication mode may be a unicast communication mode, a multicast communication mode or a broadcast communication mode. If the first terminal device supports the unicast communication mode capability, the first terminal device can communicate with one terminal device in a unicast mode; if the first terminal device supports the multicast communication mode capability, the first terminal device can communicate with a group of terminal devices in a multicast mode; if the first terminal device supports the broadcast communication mode capability, the first terminal device may communicate with other terminal devices in a broadcast manner.

Optionally, the first mapping set includes a mapping relationship between at least one side row capability identifier and at least one side row communication capability supported by the terminal device, the second mapping set includes a mapping relationship between a combination of at least one side row capability identifier and at least one index, and a mapping relationship exists between at least one first index and a combination of at least one side row capability identifier for identifying the first side row communication capability.

That is, the first mapping set represents the capability of the terminal device on a single frequency band and/or a single carrier, the second mapping set represents the capability of the terminal device on multiple frequency bands, that is, the first mapping set lists a set of possible sidelink communication capabilities for a frequency band and/or a carrier, and the second mapping set lists a set of possible combinations of the sidelink communication capabilities of the first terminal device on different frequency band combinations when performing multi-frequency band transmission or reception.

It should be understood that, in the embodiment of the present application, the first mapping Set may also be referred to as a Feature Set (Feature Sets), and the second mapping Set may also be referred to as a Feature Set Combinations (Feature Set Combinations).

In this embodiment, the first terminal device may report the at least one first index to the first network device periodically, for example, report the at least one first index to the first network device every 10 ms.

Or, the reporting of the at least one first index to the first network device by the first terminal device may be triggered by a specific event. For example, the specific event may be that the network device requests the terminal device to report capability information.

Or before the first terminal device reports the at least one first index to the first network device, the first terminal device may obtain first indication information, where the first indication information is used to indicate that the first terminal device reports the first side communication capability to the first network device. The first indication information may be sent by the first network device, or the first indication information may be acquired by the terminal device through the system information.

In the case that the first network device sends the first indication information to the first terminal device, the first indication information may also indicate capability information that the first terminal device needs to report, that is, the first indication information may indicate capability information supported or needed by the first network device. Therefore, at least part of the capability reported by the first terminal equipment can be avoided being unsupported or unnecessary by the first network equipment, so that the signaling overhead can be saved.

Wherein, the capability information may include, but is not limited to, at least one of the following: public Land Mobile Network (PLMN) information, Radio Access Technology (RAT) information, frequency information, and terminal type information.

Alternatively, the frequency information may include information such as frequency band, frequency point, and frequency band range.

When the first indication information indicates the capability information that the first terminal device needs to report, as an example, the first indication information may indicate that the capability information that the UE needs to report is for sidelink communication. For example, the first indication information indicates LTE sidelink communication or NR sidelink communication.

As another example, the first indication information does not indicate whether capability information for sidestream communication needs to be reported. In this case, the first terminal device may report the first side communication capability and the first cellular communication capability to the first network device based on the first indication information.

Alternatively, the first terminal device may report the first cellular communication capability to the first network device based on the capability information, and determine whether reporting of the first side communication capability related to the capability information is required according to other messages.

The other message may be fifth indication information sent by the first network device to the first terminal device, where the fifth indication information is used to indicate that the first terminal device reports the sidestream communication capability related to the capability information. Alternatively, the other message may be a mapping between capability information of cellular communication and capability information of sidestream communication. Alternatively, the other message may be a protocol specification that is pre-set on the first terminal device, such as a protocol specification that reports the sidelink communication capability at the same time that the first terminal device reports the cellular communication capability.

The description will be given by taking the capability information as RAT. The first indication information indicates that the first terminal device reports the LTE-related communication capability, but does not indicate sidestream communication, and in one implementation, the first terminal device may report the LTE-related cellular communication capability and the LTE-related sidestream communication capability. In another implementation, the first terminal device may report the cellular communication capability related to LTE, and then determine, according to a mapping relationship between at least one cellular communication RAT and a sidestream communication RAT, and according to the cellular communication RAT indicated by the first indication information, the sidestream communication RAT reported to the first network device. For example, in the mapping relationship between the RATs of the at least one cellular communication and the RATs of the sidestream communication, the uplink and downlink of the LTE correspond to the sidestream of the LTE and the sidestream of the NR, and the first terminal device may also report the sidestream communication capability of the LTE and the sidestream communication capability of the NR to the first network device.

Optionally, before 210, the method 200 may further include: the first terminal device determines at least one first index according to the first mapping set, the second mapping set and the supported first side communication capability.

Specifically, the first terminal device may determine, according to the first side communication capability and the first mapping set, a side capability identifier corresponding to the side communication capability on the single frequency band, and then determine, according to the side capability identifier on the single frequency band and the second mapping set, at least one first index corresponding to a combination of the side capability identifiers. For example, the first sideline communication capability is XXY, the first terminal device determines, according to the first mapping set, that the sideline capability identifier corresponding to the sideline communication capability X is a, and the sideline capability identifier corresponding to the sideline communication capability Y is b. Then, the first terminal device determines that the index corresponding to the combination aab of the sideline capability identifiers is 1 in the second mapping set, and the first index reported to the first network device by the first terminal device is 1.

Optionally, the reporting, by the first terminal device, the at least one first index to the first network device may include: the first terminal device reports at least one first index associated with at least one sidelink frequency band combination to the first network device.

The following describes the band combination. If there are 3 frequency bands of the frequency band a, the frequency band B and the frequency band C, the first terminal device may perform communication on a single frequency band: band a, band B, or band C; alternatively, the first terminal device may communicate over a dual band, which is: band A + band B, band A + band C, or band B + band C; alternatively, the first terminal device may communicate on three frequency bands, i.e. the first terminal device may communicate on band a + band B + band C. It can be seen that there are 7 frequency band combinations, which are: (1) band A; (2) a frequency band B; (3) band C; (4) band a + band B; (5) band A + band C; (6) band B + band C; (7) band a + band B + band C.

Specifically, the first terminal device may report the set of frequency band combinations to the first network device based on the second mapping set. The set of frequency band combinations may include a frequency band combination for which the sidestream communication capability of the terminal device is for multi-band transmission or reception, and an index corresponding to a different frequency band combination, which may reference an index of the second mapping set to indicate a sidestream communication capability combination available on the different frequency band combination.

The first terminal device reports the first cellular communication capability to the first network device, and specifically, the first terminal device may determine the at least one second index according to the third mapping set, the fourth mapping set and the supported first cellular communication capability. Then, the first terminal device reports at least one second index to the first network device.

Wherein the third mapping set comprises a mapping relationship between at least one cellular capability identifier and at least one cellular communication capability, the fourth mapping set comprises a mapping relationship between a combination of at least one cellular capability identifier and at least one index, the at least one second index has a mapping relationship with a combination of at least one cellular capability identifier for identifying the first cellular communication capability, and the at least one index comprises the at least one second index.

Alternatively, the second mapping set may be independent of the fourth mapping set, i.e. the second mapping set may be defined separately for sidelink communications, separately from the fourth mapping set for cellular communications.

Alternatively, the second set of mappings may be defined jointly with the fourth set of mappings.

In this case, the total set where the second mapping set and the fourth mapping set are located may be distinguished by some particular way of distinguishing the index in the second mapping set from the index in the fourth mapping set.

For example, the total set in which the second mapping set and the fourth mapping set are located may include third information, and the third information may display information indicating that a certain index is an index in the second mapping set or an index in the fourth set. For example, the third information may indicate that the first N indexes are indexes in the second mapping set, the last N indexes are indexes in the fourth mapping set, and N is a positive integer. Alternatively, the third information may indicate that the even indices are indices in the second mapping set and the odd indices are indices in the fourth mapping set.

Further illustratively, the first terminal device may negotiate in advance with the first network device which indices are indices in the second mapping set or indices in the fourth set.

Thus, upon receiving the at least one first index and/or the at least one second index, the first network device may determine whether the received index is for a sidelink communication or a cellular communication.

Alternatively, the first mapping set may be in a different message Element (IE) than the third mapping set.

The reporting, by the first terminal device, the at least one second index to the first network device may include: the first terminal device reports to the first network device at least one second index associated with the at least one cellular frequency band combination.

With respect to the above-mentioned frequency band combination set, in a possible embodiment, the frequency band combination set may include at least one side row frequency band combination and at least one cellular frequency band combination, that is, a frequency band combination set (for convenience of description, referred to as a first frequency band combination set) in which the cellular frequency band combination is located and a frequency band combination (for convenience of description, referred to as a second frequency band combination set) in which the side row frequency band combination is located are jointly defined. In this case, the index in the second mapping set and the index in the fourth mapping set may be referenced within one band combination.

In another possible embodiment, the set of frequency band combinations may comprise only at least one side row of frequency band combinations, i.e. the first set of frequency band combinations is independent of the second set of frequency band combinations.

In this case, the first set of frequency band combinations may include first information that may be used to indicate a sidelink frequency band combination that is simultaneously supported by each of the at least one cellular frequency band combination. That is, the first information may indicate which cellular band combination may be collocated with which sidelink band combination. While the first information may indicate the sidelink frequency band combination simultaneously supported by each cellular frequency band combination, the first information may indicate the number of the sidelink frequency band combination supported by the cellular frequency band combination in the second set of frequency band combinations, for example.

Alternatively, the second set of frequency band combinations may include second information that may be used to indicate a cellular frequency band combination that is simultaneously supported by each of the at least one sideline frequency band combination.

In Rel-16NR, the scenario of V2X is extended to cross RAT (Inter-RAT), i.e. both LTE and NR can control the PC5(LTE-based PC5) interface of LTE, and both LTE and NR can control the PC5(NR-based PC5) interface of NR.

Based on this, the RAT of the sidelink communication for which the second mapping set is directed and the RAT of the cellular communication for which the fourth mapping set is directed may be different, for example, the RAT of the sidelink communication is NR, and the RAT of the cellular communication is LTE. Of course, the RAT of the sidelink communications for which the second mapping set is directed and the RAT of the cellular traffic for which the fourth mapping set is directed may also be the same, and this is not specifically limited in this embodiment of the application.

Similarly, the RAT of the cellular communication for which the first set of frequency band combinations is intended and the RAT of the sidelink communication for which the second set of frequency band combinations is intended may be different or the same.

Optionally, the first terminal device may also report Uu interface information for controlling sideline communications to the first network device. That is, the first terminal device may report to the first network device what network control from the Uu interface the sidestream communication may support.

Wherein, the Uu interface information may include, but is not limited to, at least one of the following: RAT related information of a Uu interface, cell group related information of the Uu interface, frequency band related information of the Uu interface, cell related information of the Uu interface, mode related information of the Uu interface and carrier related information of the Uu interface.

For example, the first terminal device may report to the first network device whether the Uu interface may control the sidestream communication. For example, the first terminal device reports to the first network device that the Uu interface cannot control the sidestream communication, or the Uu interface may control the sidestream communication.

Further, in a case that the Uu interface can control the sidestream communication, the first terminal device may report to the first network device what mode the Uu interface can control the sidestream communication, for example, the Uu interface can control the sidestream communication in mode 1 and/or mode 2.

Still further, the first terminal device may report to the first network device which Uu-RAT may control sidelink communications. For example, the first network device may control the sidelink communications using the Uu interface of LTE and/or NR. When the LTE-Uu controls NR-V2X, the Uu interface can be configured as in the case of LTE-LTE DC; when the NR-Uu controls LTE-V2X, the Uu interface can be configured as in the case of NR-NR DC.

Further, the first terminal device may report to the first network device which Uu frequency range may control sidelink communication.

Furthermore, the first terminal device may report to the first network device which Uu cell group may control the sidestream communication. For example, the first network device may control sidelink communications using the Uu interface of a Master Cell Group (MCG) and/or a Secondary Cell Group (SCG).

It should be understood that the term "and/or" herein is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In a scenario that a cellular network controls sidelink communication across RATs, when a first terminal device reports a communication capability to a first network device, for example, the first terminal device reports at least one first index corresponding to the first sidelink communication capability to the first network device, the first terminal device may place the communication capability in any one of the following capability containers: in the LTE Capability container UE-EUTRA-Capability, that is, in the UE-Evolved Universal Terrestrial Radio Access (E-UTRA) -Capability (Capability), NR Capability container UE-NR-Capability or in the Multi-Radio Access Technology Dual Connectivity (MR-DC) Capability container UE-MRDC-Capability.

That is, the first terminal device may place an indication of the relevant communication capabilities in the Capability container UE-EUTRA-Capability. At this point, if LTE-Uu controls NR-V2X, one or more NR side row band combinations may be associated for each LTE cellular band combination (LTE downlink band and/or uplink band combination).

Alternatively, the first terminal device may place an indication of the relevant communication capabilities in the Capability container UE-NR-Capability. At this time, if LTE-Uu controls NR-V2X, one or more LTE cellular band combinations (LTE downlink band combinations and/or uplink band combinations) may be associated for each NR side row band combination.

Still alternatively, the first terminal device may place an indication of the relevant communication capabilities in the Capability container UE-MRDC-Capability. At this time, if LTE-Uu controls NR-V2X, an association between LTE cellular band combination and NR sidestream band combination may be defined. Since this case can be used for the case where the sidestream band combines more than one RAT, e.g. LTE and NR sidestream links, there is a great flexibility to place the indication of the relevant communication capabilities in the Capability container UE-MRDC-Capability.

In different scenarios, the communication capabilities supported by the first terminal device may be different. For example, in scenario 1, the first end device supports a unicast communication mode, and in scenario 2, the first end device supports a multicast communication mode.

Therefore, for each content mentioned above, which is reported by the first terminal device to the first network device, for example, the Uu interface information used for controlling the sidestream communication reported by the first terminal device to the first network device may be reported by the first terminal device for at least one of the following granularities: a terminal device, a frequency band, a combination of frequency bands, at least one frequency band of a combination of frequency bands or a carrier.

For example, if the first terminal device reports the Uu interface information for controlling the sidestream communication to the first network device with the terminal device as the granularity, the first terminal device may only need one bit, for example, a bit "1" indicates that the Uu interface can control the sidestream communication, and a bit "0" indicates that the Uu interface cannot control the sidestream communication. If the first terminal device reports the Uu interface information for controlling the sidelink communication to the first network device with the frequency band as the granularity, the number of bits for reporting the Uu interface information by the first terminal device may be the same as the number of the frequency bands.

For the first network device, after receiving the at least one first index reported by the first terminal device, the first network device may determine the first side communication capability according to the first mapping set, the second mapping set, and the at least one first index.

Specifically, the first network device may determine, according to the second mapping set and the at least one first index, a combination of at least one side-row capability identifier corresponding to the at least one first index, and then determine, according to the first mapping set, a side-row communication capability represented by each side-row capability identifier, so as to determine the first side-row communication capability. For example, if the first index received by the first network device is 1, the first network device determines, according to the second mapping set, that the combination of the side line capability identifiers corresponding to the index 1 is aab, and then the first network device determines, according to the first mapping set, that the side line capability identifier a corresponds to the side line communication capability X, and that the side line capability identifier b corresponds to the side line communication capability Y, the first network device may determine that the first side communication capability is XXY.

Optionally, the method 200 may further include: the first network device obtains a first mapping set and a second mapping set.

As an example, the first terminal device may report the first mapping set and the second mapping combination to the first network device. For example, the first terminal device may report the first mapping set to the first network device first, and then report the second mapping set to the first network device based on the first mapping set.

As another example, the first mapping set and the second mapping set are preset on the first network device, so that the first network device may obtain the first mapping set and the second mapping set.

It should be understood that the implementation of the first network device determining the first cellular communication capability according to the third mapping set, the fourth mapping set and the at least one second index may refer to the implementation of the first network device determining the first side communication capability, and for brevity of content, will not be described herein too much.

It should also be understood that in this embodiment, the first terminal device may determine the at least one first index from only one mapping set (e.g., the fifth mapping set). The fifth mapping set comprises a mapping relationship between at least one sidelink communication capability and at least one index, and the sidelink capabilities in the fifth mapping set can comprise the sidelink communication capability on a single frequency band and the sidelink communication capability on a multi-frequency band. If the first sidelink communication capability is XXY, and the index corresponding to the sidelink communication capability XXY in the fifth mapping set is 1, the first index reported by the next first network device of the first terminal device is 1. In this case, the first terminal device may also report the fifth mapping set to the first network device.

Similarly, the first terminal device may determine the at least one second index from the sixth mapping set. Wherein the sixth mapping set comprises a mapping relationship between at least one cellular communication capability and at least one index, and the sidelink capabilities in the sixth mapping set may comprise cellular communication capabilities on a single frequency band and cellular communication capabilities on multiple frequency bands.

Optionally, the method 200 may further include: after the first terminal device reports at least one first index to the first network device, the first terminal device receives at least one third index sent by the second terminal device, and the at least one third index refers to a second side communication capability for identifying communication between the second terminal device and the first terminal device.

Before the second terminal device sends the at least one third index to the first terminal device, the second terminal device may determine the second side-communication capability according to at least one of the following capabilities:

the second network device comprises a second cellular communication capability for communication between the second terminal device and the second network device, a sidestream communication capability for communication between the second terminal device and other terminal devices except the first terminal device, a sidestream communication capability available for the second terminal device, and a sidestream communication capability which needs to be reported to the first terminal device by the second terminal device.

Specifically, in an implementation manner, after the second terminal device reports the supported communication capability to the second network device, the second network device may send the third indication information to the second terminal device based on the communication capability reported by the second terminal device.

As an example, the third indication information may be used to indicate the second cellular communication configuration.

Since there may be a coupling relationship between the cellular communication configuration of the terminal device and the capabilities available for sidelink communication, i.e. there may be situations where the terminal device shares communication capabilities between cellular communication and sidelink communication. Therefore, the second terminal device may determine the usable sidestream communication capability according to the second cellular communication configuration indicated by the third indication information. For example, if the frequency band combination usable by the first terminal device is frequency band combination 1 and frequency band combination 2, and the frequency band combination configured by the second network device for cellular communication of the second terminal device is frequency band combination 1, the frequency band combination usable for sidelink communication of the second terminal device is limited to be frequency band combination 2.

As another example, the third indication information may be used to indicate a sidestream communication capability or configuration usable by the second terminal device.

The third indication information may be, but is not limited to, a Radio Resource Control (RRC) connection reconfiguration message.

In another implementation, the first terminal device may send fourth indication information to the second terminal device, where the fourth indication information may be used to indicate a sidelink communication capability that the second terminal device needs to send to the first terminal device, that is, the fourth indication information may be used to indicate a communication capability that the first terminal device needs or is interested in from the second terminal device, for example, a communication capability of a specific RAT or a communication capability of a specific frequency band.

Further, the second terminal device may further determine the second side communication capability in combination with Quality of Service (QoS) attribute information, Service information, and the like. Illustratively, the service information may be carrier information, traffic volume, service type, etc. to which the service is applicable.

Optionally, the method 200 may further include: the first network device sends first configuration information to the first terminal device, wherein the first configuration information comprises communication configuration for communication between the first terminal device and the second terminal device.

In this step, there are two implementations, which are described separately below.

The first method is as follows: the first network device transmits the first configuration information without obtaining the second side communication capability.

At least one candidate value for a first parameter for sidestream communication may be included in the first configuration information. Alternatively, the first parameter may be configured by the first network device according to the first side communication capability. At this time, the first parameter may satisfy the first side communication capability of the first terminal device, but may not necessarily satisfy the second side communication capability.

The first terminal device may determine a usage value for the first parameter based on the second sidelink communication capability and the at least one candidate value.

As an example, the first terminal device may determine a first candidate value of the at least one candidate value as a usage value for the first parameter if the first candidate value is applicable to the second sidelink communication capability.

When the first candidate value includes a plurality of values, the first terminal device may optionally randomly select one value among the plurality of values as the use value of the first parameter.

Alternatively, the first configuration information may include a usage priority of the plurality of candidate values. At this time, the first terminal device may determine the usage value of the first parameter according to the usage priorities of the plurality of values. For example, the first terminal device may determine, as the usage value of the first parameter, a value having the highest priority among the plurality of values.

As another example, if the at least one candidate value is not applicable to the second side communication capability, the first terminal device may send second indication information to the first network device, where the second indication information indicates that the at least one candidate value is not applicable to the second side communication capability.

Alternatively, the first terminal device may reestablish the connection with the first network device.

Alternatively, the first terminal device may determine a candidate value for the first parameter as the usage value. Wherein the candidate value of the first parameter may be a default value of the first parameter given in the protocol.

Further, when the at least one candidate value includes multiple candidate values, the first configuration information may further include a value for the first terminal device to roll back to the first network device when the multiple candidate values are not applicable to the second sidelink communication capability. For example, the first configuration information may include that the first terminal device backs all of the candidate values to the first network device, or the first terminal device may back half of the candidate values with the lowest priority among the candidate values to the first network device.

The first configuration information may further include capability applicable conditions of the plurality of candidate values. For example, a value that should be used on condition of what capability of the second terminal device may be included in the first configuration information. For example, the plurality of candidate values may include a plurality of candidate values 1 and a plurality of candidate values 2, and the first terminal device may determine, in the case that the second terminal device supports CA, the candidate value 1 as the usage value of the first parameter; in the case where the second terminal device does not support CA, the first terminal device may determine candidate value 2 as the used value of the first parameter.

Alternatively, if the at least one candidate value includes one candidate value, the one candidate value may be a value supporting the most basic communication capability.

The second method comprises the following steps: and the first network equipment sends the first configuration information under the condition that the first terminal equipment reports the second side communication capability.

The first network device may send the first configuration information to the first network device for the second side communication capability, when the first terminal device reports the second side communication capability to the first network device.

The first terminal device may report the second sidelink communication capability to the first network device using the sidelink information.

After the first terminal device obtains the sidestream communication configuration for communicating with the second terminal device, second configuration information may be sent to the second terminal device, where the second configuration information includes the sidestream communication configuration for communicating between the first terminal device and the second terminal device.

It should be understood that, in this embodiment of the application, the first terminal device may also send, to the second terminal device, a sidestream communication capability for communication between the first terminal device and the second terminal device, and then, the second network device may send, to the second terminal device, a sidestream communication configuration for communication between the first terminal device and the second terminal device.

A specific implementation of the method for reporting the capability of the sidelink according to the embodiment of the present application is exemplarily described below with reference to fig. 4.

S311, the first network device (NW1) sends first indication information to the first terminal device (UE1), where the first indication information is used to indicate that the UE1 reports the first sidelink communication capability to the NW 1.

S312, the UE1 reports at least one first index to the NW1 based on the first indication information.

S321, the second network device (NW2) sends, to the second terminal device (UE2), capability acquisition information, where the capability acquisition information is used to instruct the UE2 to report, to the NW2, the sidestream communication capability supported by the UE 2.

S322, the UE2 reports an index corresponding to the supported sideline communication capability to the NW2 based on the capability acquisition information.

S331, the NW2 sends third indication information to the UE2 indicating a second cellular communication configuration for the UE2 for cellular communication.

S332, the UE1 sends fourth indication information to the UE2 indicating the sidelink communications capability from the UE2 that the UE1 requires.

S333, the UE2 determines a second sidelink communications capability for the UE1-UE2 communication that needs to be sent to the UE1, according to the second cellular communications capability and the sidelink communications capability from the UE2 that the UE1 needs.

S340, the UE2 sends at least one third index to the UE1 for identifying the second side communication capability.

S351, the UE1 reports one less third index to the NW 1.

S352, the NW1 sends first configuration information to the UE1 based on the second sidelink communication capability, the first configuration information including a sidelink communication configuration for communication between the UE1 and the UE 1.

S353, the UE1 obtains a sidelink communication configuration for communicating with the UE 2.

S360, the UE1 sends second configuration information to the UE1, the second configuration information including a sidelink communication configuration for communication between the UE1 and the UE 1.

It should be understood that, in the embodiment of the present application, reporting the communication capability, for example, reporting, by the first terminal device, the first side communication capability and/or the first cellular communication capability to the first network device refers to reporting an index corresponding to the communication capability.

It should also be understood that, in the embodiments of the present application, "first", "second", and "third", etc. are only for distinguishing different objects, but do not limit the scope of the embodiments of the present application.

In the embodiment of the application, in the car networking system, when the terminal equipment needs to report the sidetracking communication capability supported by the terminal equipment to the network equipment, the terminal equipment can report the index corresponding to the sidetracking communication capability to the network equipment without reporting the specific sidetracking communication capability. The signaling overhead occupied by the reporting index is smaller than that occupied by the reporting side traffic capacity, so that the reporting of the terminal equipment capacity in the vehicle networking system can be realized with lower signaling overhead.

Optionally, the embodiment of the present application further includes another method 400 for reporting the capability of the sidelink. As shown in fig. 5, the method 400 may include at least some of the following.

In 410, the second terminal device transmits at least one third index to the first terminal device, wherein the at least one third index references a second side-communication capability identifying communication between the second terminal device and the first terminal device.

In 420, the first terminal device receives at least one third index transmitted by the second terminal device.

Optionally, in this embodiment of the present application, the method 400 may further include: the first terminal device receives first configuration information sent by the first network device, wherein the first configuration information comprises a sideline communication configuration for communication between the first terminal device and the second terminal device.

Optionally, in this embodiment of the present application, the first configuration information includes at least one candidate value for the first parameter.

In this case, the method 400 further includes: the first terminal device determines a usage value for the first parameter based on the second side communication capability and the at least one candidate value.

Optionally, in this embodiment of the present application, the determining, by the first terminal device, the usage value for the first parameter according to the second side communication capability and the at least one candidate value includes: if a first candidate value of the at least one candidate value is applicable to the second sidelink communication capability, the first terminal device determines the first candidate value as a usage value for the first parameter.

Optionally, in this embodiment of the present application, if at least one candidate value is not applicable to the second side communication capability, the method further includes: the first terminal equipment sends second indication information to the first network equipment, wherein the second indication information is used for indicating that at least one candidate value is not applicable to the second side communication capability; or

The first terminal device reestablishes a connection with the first network device.

Optionally, in this embodiment of the present application, the determining, by the first terminal device, the usage value for the first parameter according to the second side communication capability and the at least one candidate value includes: if the at least one candidate value is not applicable to the second side communication capability, the first terminal device determines the default value of the first parameter as the usage value.

Optionally, in this embodiment of the present application, the method 400 may further include: the second terminal device determines the second side communication capability according to at least one of the following capabilities:

the second network device comprises a second cellular communication capability or a second cellular communication configuration for communication between the second terminal device and the second network device, a sidestream communication capability for communication between the second terminal device and other terminal devices except the first terminal device, a sidestream communication capability or a sidestream communication configuration usable by the second terminal device, and a sidestream communication capability which is required to be reported to the first terminal device by the second terminal device.

Optionally, in this embodiment of the present application, the method 400 may further include: and the second terminal equipment receives third indication information sent by the second network equipment, wherein the third indication information is used for indicating the second cellular communication configuration.

Optionally, in this embodiment of the present application, the method 400 may further include: and the second terminal equipment receives third indication information sent by the second network equipment, wherein the third indication information is used for indicating the sidestream communication capability or sidestream communication configuration which can be used by the second terminal equipment.

Optionally, in this embodiment of the present application, the method 400 may further include: and the second terminal equipment receives fourth indication information sent by the first terminal equipment, wherein the fourth indication information is used for indicating the sidestream communication capacity which needs to be reported to the first terminal equipment by the second terminal equipment.

Optionally, in this embodiment of the present application, the method 400 may further include: and the second terminal equipment receives second configuration information sent by the first terminal equipment, wherein the second configuration information comprises a sideline communication configuration for communication between the first terminal equipment and the second terminal equipment.

It should be understood that although

methods

200 and 400 are described above separately, this does not mean that

methods

200 and 400 are independent and that the descriptions of the respective methods may be referred to one another. For example, the associated description in method 200 may apply to method 400. For brevity of content, the method 400 is not described in detail in this embodiment of the application.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application.

For example, the various features described in the foregoing detailed description may be combined in any suitable manner without contradiction, and various combinations that may be possible are not described in this application in order to avoid unnecessary repetition.

For example, various embodiments of the present application may be arbitrarily combined with each other, and the same should be considered as the disclosure of the present application as long as the concept of the present application is not violated.

It should be understood that, in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method for reporting the capability of the sidelink according to the embodiment of the present application is described above in detail, and a communication apparatus according to the embodiment of the present application will be described below with reference to fig. 6 to 9, and the technical features described in the embodiment of the method are applicable to the following apparatus embodiments.

Fig. 6 shows a schematic block diagram of a terminal device 500 of an embodiment of the present application. As shown in fig. 6, the terminal device 500 includes:

a communication unit 510, configured to report at least one first index to a first network device, where the at least one first index is used to identify a first side communication capability supported by the terminal device 500.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: reporting a first mapping set and a second mapping set to the first network equipment;

the first mapping set comprises a mapping relation between at least one sideline capability identifier and at least one sideline communication capability supported by the terminal equipment, the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier and at least one index, and the at least one index comprises the at least one first index.

Optionally, in this embodiment of the present application, the communication unit 510 is specifically configured to: reporting the at least one first index associated with at least one sidelink frequency band combination to the first network device.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: and reporting Uu interface information for controlling sidestream communication to the first network equipment.

Optionally, in this embodiment of the present application, the Uu interface information includes at least one of the following: radio access technology RAT information of a Uu interface, cell group information of the Uu interface, frequency band information of the Uu interface, cell information of the Uu interface, mode information of the Uu interface, and carrier information of the Uu interface.

Optionally, in this embodiment of the present application, the communication unit 510 is specifically configured to: reporting the Uu interface information to the first network device based on at least one of the following granularities: at least one of a terminal device, a sideline frequency band combination, and a sideline frequency band combination.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: receiving first indication information sent by the first network device, where the first indication information is used to indicate that the terminal device 500 reports the first side communication capability to the first network device.

Optionally, in this embodiment of the application, the first indication information is used to indicate capability information of sideline communications that the terminal device 500 needs to report.

Optionally, in this embodiment of the present application, the capability information includes RAT information of sidelink communication and/or frequency band information of sidelink communication.

Optionally, in this embodiment of the application, the first indication information is used to indicate RAT information that the terminal device 500 needs to report.

Optionally, in this embodiment of the present application, the terminal device 500 further includes: a processing unit 520, configured to determine, according to the RAT of cellular communication indicated by the first indication information, the RAT of sidestream communication reported to the first network device.

Optionally, in this embodiment of the present application, the processing unit 520 is specifically configured to: and determining the RAT of the sidestream communication reported to the first network device according to the association relationship between at least one RAT of the cellular communication and the RAT of the sidestream communication and the RAT of the cellular communication indicated by the first indication information.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: reporting at least one second index to the first network device, where the at least one second index is used to identify the first cellular communication capability supported by the terminal device 500.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: reporting a third mapping set and a fourth mapping set to the first network equipment;

wherein the third mapping set comprises a mapping relationship between at least one cellular capability identifier and at least one cellular communication capability supported by the terminal device, the fourth mapping set comprises a mapping relationship between a combination of at least one cellular capability identifier and at least one index, and the at least one index comprises the at least one second index.

Optionally, in this embodiment of the present application, the second mapping set is independent of the fourth mapping set;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.

Optionally, in this embodiment of the present application, the second mapping set and the fourth mapping set are jointly defined;

Optionally, in this embodiment, the RAT of the sidelink communication for which the second mapping set is directed and the RAT of the cellular communication for which the fourth mapping set is directed are different.

Optionally, in this embodiment of the present application, the communication unit 510 is specifically configured to: reporting the at least one second index associated with at least one cellular frequency band combination to the first network device.

Optionally, in this embodiment of the present application, a first set of frequency band combinations in which the at least one cellular frequency band combination is located is defined jointly with a second set of frequency band combinations in which the at least one sidelink frequency band combination is located.

Optionally, in this embodiment of the present application, the first set of frequency band combinations in which the at least one cellular frequency band combination is located is independent of the second set of frequency band combinations in which the at least one sidelink frequency band combination is located.

Optionally, in this embodiment, the first set of frequency band combinations includes first information, where the first information is used to indicate a sidelining frequency band combination that is simultaneously supported by a cellular frequency band combination in the at least one cellular frequency band combination.

Optionally, in this embodiment, the second set of frequency band combinations includes second information, where the second information is used to indicate a cellular frequency band combination that is simultaneously supported by a side row frequency band combination in the at least one side row frequency band combination.

Optionally, in this embodiment, the RAT of the cellular communication for which the first set of frequency band combinations is intended and the RAT of the sidelink communication for which the second set of frequency band combinations is intended are different.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: receiving at least one third index sent by a second terminal device, the at least one third index referring to a second side-communication capability identifying communication between the second terminal device and the terminal device 500.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: reporting a fifth mapping set to the first network device, where the fifth mapping set includes a mapping relationship between at least one sidestream communication capability and at least one index, and the at least one index includes the at least one first index.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: receiving first configuration information sent by the first network device, where the first configuration information includes a sideline communication configuration for performing communication between the terminal device 500 and the second terminal device.

Optionally, in this embodiment of the present application, the first configuration information includes at least one candidate value for a first parameter;

the terminal device 500 further includes: a processing unit 520, configured to determine a usage value for the first parameter according to the second sidelink communication capability and the at least one candidate value.

Optionally, in this embodiment of the present application, the processing unit 520 is specifically configured to: determining a first candidate value of the at least one candidate value as a used value for the first parameter if the first candidate value is applicable to the second sidelink communications capability.

Optionally, in this embodiment of the present application, if the at least one candidate value is not applicable to the second side communication capability, the communication unit 510 is further configured to: sending second indication information to the first network device, the second indication information indicating that the at least one candidate value is not applicable to the second sidelink communication capability; or

The processing unit 520 is further configured to reestablish a connection with the first network device.

Optionally, in this embodiment of the present application, the processing unit 520 is specifically configured to: determining a default value of the first parameter as the usage value if the at least one candidate value is not applicable to the second side communication capability.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: and reporting the information of the second side communication capacity to the first network equipment.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: and sending second configuration information to the second terminal device, where the second configuration information includes a sideline communication configuration for performing communication between the terminal device 500 and the second terminal device.

It should be understood that the terminal device 500 may correspond to the terminal device in the method 200, and corresponding operations of the terminal device in the method 200 may be implemented, which are not described herein again for brevity.

Fig. 7 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in fig. 7, the terminal apparatus 600 includes:

a communication unit 610, configured to receive at least one third index sent by a second terminal device, where the at least one third index refers to a second side communication capability identifying communication between the second terminal device and the terminal device 600.

Optionally, in this embodiment of the present application, the communication unit 610 is further configured to: receiving first configuration information sent by the first network device, where the first configuration information includes a sideline communication configuration for performing communication between the terminal device 600 and the second terminal device.

the terminal apparatus 600 further includes: a processing unit 620, configured to determine a usage value for the first parameter according to the second side communication capability and the at least one candidate value.

Optionally, in this embodiment of the present application, the processing unit 620 is specifically configured to: determining a first candidate value of the at least one candidate value as a used value for the first parameter if the first candidate value is applicable to the second sidelink communications capability.

Optionally, in this embodiment of the present application, if the at least one candidate value is not applicable to the second side communication capability, the communication unit 610 is further configured to: sending second indication information to the first network device, the second indication information indicating that the at least one candidate value is not applicable to the second sidelink communication capability; or

The processing unit 620 is further configured to reestablish a connection with the first network device.

Optionally, in this embodiment of the present application, the processing unit 620 is specifically configured to: determining a default value of the first parameter as the usage value if the at least one candidate value is not applicable to the second side communication capability.

It should be understood that the terminal device 600 may correspond to the terminal device in the method 400, and corresponding operations of the terminal device in the method 400 may be implemented, which are not described herein again for brevity.

Fig. 8 shows a schematic block diagram of a terminal device 700 of an embodiment of the present application. As shown in fig. 8, the terminal device 700 includes:

a communication unit 710 configured to send at least one third index to the first terminal device, the at least one third index referring to a second side communication capability identifying communication between the terminal device 700 and the first terminal device.

Optionally, in this embodiment of the present application, the terminal device 700 further includes: a processing unit 720, configured to determine the second side communication capability according to at least one of the following capabilities:

a second cellular communication capability or a second cellular communication configuration for communication between the terminal device 700 and a second network device, a sidestream communication capability for communication between the terminal device 700 and other terminal devices except the first terminal device, a sidestream communication capability or a sidestream communication configuration usable by the terminal device 700, and a sidestream communication capability that the terminal device 700 needs to report to the first terminal device.

Optionally, in this embodiment of the present application, the communication unit 710 is further configured to: receiving third indication information sent by the second network device, where the third indication information is used for indicating the second cellular communication configuration.

Optionally, in this embodiment of the present application, the communication unit 710 is further configured to: and receiving third indication information sent by the second network device, where the third indication information is used to indicate a sidestream communication capability or a sidestream communication configuration usable by the terminal device 700.

Optionally, in this embodiment of the present application, the communication unit 710 is further configured to: receiving fourth indication information sent by the first terminal device, where the fourth indication information is used to indicate a sideline communication capability that the terminal device 700 needs to report to the first terminal device.

Optionally, in this embodiment of the present application, the communication unit 710 is further configured to: and receiving second configuration information sent by the first terminal device, where the second configuration information includes a sideline communication configuration for performing communication between the first terminal device and the terminal device 700.

It should be understood that the terminal device 700 may correspond to the terminal device in the method 400, and corresponding operations of the terminal device in the method 400 may be implemented, which are not described herein again for brevity.

Fig. 9 shows a schematic block diagram of a network device 800 of an embodiment of the application. As shown in fig. 9, the network device 800 includes:

a communication unit 810, configured to receive at least one first index reported by a first terminal device, where the at least one first index is used to identify a first side communication capability supported by the first terminal device.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: receiving a first mapping set and a second mapping set reported by the first terminal equipment;

Optionally, in this embodiment of the present application, the network device 800 further includes: a processing unit 820, configured to determine the first side communication capability according to the first mapping set, the second mapping set and the at least one first index.

Optionally, in this embodiment of the present application, the communication unit 810 is specifically configured to: receiving the at least one first index associated with at least one sidelink frequency band combination reported by the first terminal device.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: and receiving Uu interface information which is reported by the first terminal equipment and is used for controlling sidestream communication.

Optionally, in this embodiment of the present application, the communication unit 810 is specifically configured to: receiving the Uu interface information reported by the first terminal device based on at least one of the following granularities: at least one of a terminal device, a sideline frequency band combination, and a sideline frequency band combination.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: and sending first indication information to the first terminal device, where the first indication information is used to indicate that the first terminal device reports the first side communication capability to the network device 800.

Optionally, in this embodiment of the application, the first indication information is used to indicate capability information of sideline communications that the first terminal device needs to report.

Optionally, in this embodiment of the application, the first indication information is used to indicate RAT information that the first terminal device needs to report.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: and receiving at least one second index reported by the first terminal equipment, wherein the at least one second index is used for identifying the first cellular communication capability supported by the first terminal equipment.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: receiving a third mapping set and a fourth mapping set reported by the first terminal equipment;

Optionally, in this embodiment of the present application, the network device 800 further includes: a processing unit 820 configured to determine the first cellular communication capability according to the third mapping set, the fourth mapping set and the at least one second index.

Optionally, in this embodiment of the present application, the communication unit 810 is specifically configured to: receiving the at least one second index associated with at least one cellular frequency band combination reported by the first terminal device.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: receiving a fifth mapping set reported by the first terminal device, where the fifth mapping set includes a mapping relationship between at least one sidestream communication capability and at least one index, and the at least one index includes the at least one first index.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: and sending first configuration information to the first terminal equipment, wherein the first configuration information comprises a sideline communication configuration for communication between the first terminal equipment and the second terminal equipment.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: and receiving second indication information sent by the first terminal device, wherein the second indication information is used for indicating that at least one candidate value is not applicable to a second sidestream communication capability, and the second sidestream communication capability is the sidestream communication capability of communication between the first terminal device and the second terminal device.

Optionally, in this embodiment of the present application, the communication unit 810 is further configured to: and receiving at least one third index reported by the first terminal equipment, wherein the at least one third index refers to a sideline communication capability for identifying communication between the first terminal equipment and the second terminal equipment.

Optionally, in this embodiment of the present application, the communication unit 810 is specifically configured to: and sending the configuration information to the first terminal equipment according to the second side communication capacity.

It should be understood that the network device 800 may correspond to the network device in the method 200, and corresponding operations of the network device in the method 200 may be implemented, which are not described herein for brevity.

Fig. 10 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. The communication device 900 shown in fig. 10 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the communication device 900 may further include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include one or more antennas.

Optionally, the communication device 900 may specifically be a network device in this embodiment, such as a first network device, and the communication device 900 may implement a corresponding process implemented by the network device in each method in this embodiment, which is not described herein again for brevity.

Optionally, the communication device 900 may specifically be a terminal device in the embodiment of the present application, such as a first terminal device or a second terminal device, and the communication device 900 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Fig. 11 is a schematic configuration diagram of an apparatus according to an embodiment of the present application. The apparatus 1000 shown in fig. 11 includes a processor 1010, and the processor 1010 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the apparatus 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the apparatus 1000 may further comprise an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically may obtain information or data transmitted by the other devices or chips.

Optionally, the apparatus 1000 may further comprise an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and may particularly output information or data to the other devices or chips.

Optionally, the apparatus may be applied to a terminal device in the embodiment of the present application, such as a first terminal device or a second terminal device, and the apparatus may implement a corresponding process implemented by the terminal device in each method of the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the apparatus may be applied to a network device in the embodiment of the present application, such as the first network device, and the apparatus may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Alternatively, the device may be a chip. It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 12 is a schematic block diagram of a communication system 1100 provided in an embodiment of the present application. As shown in fig. 12, the communication system 1100 includes a first terminal device 1110 and a first network device 1120.

The first terminal device 1110 may be configured to implement the corresponding function implemented by the first terminal device in the foregoing method, and the first network device 1120 may be configured to implement the corresponding function implemented by the first network device in the foregoing method, which is not described herein again for brevity.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to a terminal device in the embodiment of the present application, such as a first terminal device or a second terminal device, and the computer program enables a computer to execute corresponding processes implemented by the terminal device in the methods of the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to a network device in the embodiments of the present application, such as the first network device, and the computer program enables the computer to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a terminal device in this embodiment, such as a first terminal device or a second terminal device, and the computer program instructions enable a computer to execute corresponding processes implemented by the terminal device in the methods in this embodiment.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, such as the first network device, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a terminal device in the embodiment of the present application, such as the first terminal device or the second terminal device, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the terminal device in the methods in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program may be applied to a network device in the embodiment of the present application, such as the first network device, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, and for brevity, details are not described here again.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for capability reporting of a sidelink, the method comprising:

the method comprises the steps that a first terminal device reports at least one first index to a first network device, wherein the at least one first index is used for identifying first side communication capacity supported by the first terminal device.
The method of claim 1, further comprising:

the first terminal device reports a first mapping set and a second mapping set to the first network device;

the first mapping set comprises a mapping relation between at least one sideline capability identifier and at least one sideline communication capability supported by the terminal equipment, the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier and at least one index, and the at least one index comprises the at least one first index.
The method of claim 1 or 2, wherein reporting, by the first terminal device, the at least one first index to the first network device comprises:

the first terminal device reports the at least one first index associated with at least one sidelink frequency band combination to the first network device.
The method according to any one of claims 1 to 3, further comprising:

and the first terminal equipment reports Uu interface information for controlling sidestream communication to the first network equipment.
The method of claim 4, wherein the Uu interface information comprises at least one of: radio access technology RAT information of a Uu interface, cell group information of the Uu interface, frequency band information of the Uu interface, cell information of the Uu interface, mode information of the Uu interface, and carrier information of the Uu interface.
The method according to claim 4 or 5, wherein the reporting, by the first terminal device, the Uu interface information for controlling the sidelink communication to the first network device includes:

the first terminal device reports the Uu interface information to the first network device based on at least one of the following granularities:

at least one of a terminal device, a sideline frequency band combination, and a sideline frequency band combination.
The method according to any one of claims 1 to 6, further comprising:

the first terminal device receives first indication information sent by the first network device, where the first indication information is used to indicate that the first terminal device reports the first side communication capability to the first network device.
The method of claim 7, wherein the first indication information is used to indicate capability information of sideline communications that the first terminal device needs to report.
The method of claim 8, wherein the capability information comprises RAT information of sidelink communication and/or frequency band information of sidelink communication.
The method of claim 7, wherein the first indication information is used to indicate RAT information that needs to be reported by the first terminal device.
The method of claim 10, further comprising:

and the first terminal equipment determines the RAT of the sidestream communication reported to the first network equipment according to the RAT of the cellular communication indicated by the first indication information.
The method of claim 11, wherein the determining, by the first terminal device, the RAT of sidestream communication to report to the first network device according to the RAT of cellular communication comprises:

and the first terminal equipment determines the RAT of the sidestream communication reported to the first network equipment according to the association relationship between at least one RAT of the cellular communication and the RAT of the sidestream communication and the RAT of the cellular communication indicated by the first indication information.
The method according to any one of claims 1 to 12, further comprising:

the first terminal device reports at least one second index to the first network device, where the at least one second index is used to identify a first cellular communication capability supported by the first terminal device.
The method of claim 13, further comprising:

the first terminal device reports a third mapping set and a fourth mapping set to the first network device;

wherein the third mapping set comprises a mapping relationship between at least one cellular capability identifier and at least one cellular communication capability supported by the terminal device, the fourth mapping set comprises a mapping relationship between a combination of at least one cellular capability identifier and at least one index, and the at least one index comprises the at least one second index.
The method of claim 14, wherein the second set of mappings is independent of the fourth set of mappings;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The method of claim 14, wherein a second set of mappings and the fourth set of mappings are jointly defined;

the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, and the at least one index comprises the at least one first index.
The method of claim 15 or 16, wherein the RAT of the sidelink communications for which the second mapping set is directed and the RAT of the cellular communications for which the fourth mapping set is directed are different.
The method according to any of claims 13 to 17, wherein reporting, by the first terminal device, at least one second index to the first network device comprises:

the first terminal device reports the at least one second index associated with at least one cellular frequency band combination to the first network device.
The method of claim 18, wherein a first set of frequency band combinations in which the at least one cellular frequency band combination is located is defined jointly with a second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The method of claim 18, wherein the first set of frequency band combinations in which the at least one cellular frequency band combination is located is independent of the second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The method of claim 20, wherein the first set of frequency band combinations comprises first information indicating a sidelink frequency band combination simultaneously supported by a cellular frequency band combination of the at least one cellular frequency band combination.
The method of claim 20, wherein the second set of frequency band combinations comprises second information indicating a cellular frequency band combination simultaneously supported by a sideline frequency band combination of the at least one sideline frequency band combination.
The method of any of claims 19-22, wherein a RAT of cellular communication for which the first set of frequency band combinations is intended and a RAT of sidestream communication for which the second set of frequency band combinations is intended are different.
The method of claim 1, further comprising:

the first terminal device reports a fifth mapping set to the first network device, where the fifth mapping set includes a mapping relationship between at least one sidestream communication capability and at least one index, and the at least one index includes the at least one first index.
The method of any one of claims 1 to 24, further comprising:

the first terminal device receives at least one third index sent by a second terminal device, wherein the at least one third index refers to a second side communication capability for identifying communication between the second terminal device and the first terminal device.
The method of claim 25, further comprising:

the first terminal device receives first configuration information sent by the first network device, wherein the first configuration information includes a sidestream communication configuration for communication between the first terminal device and the second terminal device.
The method of claim 26, wherein the first configuration information comprises at least one candidate value for a first parameter;

the method further comprises the following steps:

the first terminal device determines a usage value for the first parameter based on the second sidelink communication capability and the at least one candidate value.
The method of claim 27, wherein the determining, by the first terminal device, the usage value for the first parameter based on the second side communication capability and the at least one candidate value comprises:

the first terminal device determines a first candidate value of the at least one candidate value as a usage value for the first parameter if the first candidate value is applicable to the second sidelink communications capability.
The method of claim 27, wherein if the at least one candidate value is not applicable to the second side communication capability, the method further comprises:

the first terminal device sends second indication information to the first network device, wherein the second indication information is used for indicating that the at least one candidate value is not applicable to the second side communication capability; or

And the first terminal equipment reestablishes the connection with the first network equipment.
The method of claim 27, wherein the determining, by the first terminal device, the usage value for the first parameter based on the second side communication capability and the at least one candidate value comprises:

the first terminal device determines a default value of the first parameter as the usage value if the at least one candidate value is not applicable to the second sidelink communications capability.
The method of any one of claims 26 to 30, further comprising:

and the first terminal equipment reports the information of the second side communication capacity to the first network equipment.
The method of any one of claims 26 to 31, further comprising:

and the first terminal equipment sends second configuration information to the second terminal equipment, wherein the second configuration information comprises the sidestream communication configuration of the communication between the first terminal equipment and the second terminal equipment.
A method for capability reporting of a sidelink, the method comprising:

the first terminal device receives at least one third index sent by a second terminal device, wherein the at least one third index refers to a second side communication capability for identifying communication between the second terminal device and the first terminal device.
The method of claim 33, further comprising:

the first terminal device receives first configuration information sent by the first network device, wherein the first configuration information includes a sidestream communication configuration for communication between the first terminal device and the second terminal device.
The method of claim 34, wherein the first configuration information comprises at least one candidate value for a first parameter;

the method further comprises the following steps:

the first terminal device determines a usage value for the first parameter based on the second sidelink communication capability and the at least one candidate value.
The method of claim 35, wherein the determining, by the first terminal device, the usage value for the first parameter based on the second side communication capability and the at least one candidate value comprises:

the first terminal device determines a first candidate value of the at least one candidate value as a usage value for the first parameter if the first candidate value is applicable to the second sidelink communications capability.
The method of claim 35, wherein if the at least one candidate value is not applicable to the second side communication capability, the method further comprises:

the first terminal device sends second indication information to the first network device, wherein the second indication information is used for indicating that the at least one candidate value is not applicable to the second side communication capability; or

And the first terminal equipment reestablishes the connection with the first network equipment.
The method of claim 35, wherein the determining, by the first terminal device, the usage value for the first parameter based on the second side communication capability and the at least one candidate value comprises:

the first terminal device determines a default value of the first parameter as the usage value if the at least one candidate value is not applicable to the second sidelink communications capability.
A method for capability reporting of a sidelink, the method comprising:

the second terminal device sends at least one third index to the first terminal device, the at least one third index referencing a second side-communication capability identifying communication between the second terminal device and the first terminal device.
The method of claim 39, further comprising:

the second terminal device determines the second side communication capability according to at least one of the following capabilities:

the second cellular communication capability or the second cellular communication configuration for communication between the second terminal device and the second network device, the sidestream communication capability for communication between the second terminal device and other terminal devices except the first terminal device, the sidestream communication capability or the sidestream communication configuration usable by the second terminal device, and the sidestream communication capability which the second terminal device needs to report to the first terminal device.
The method of claim 40, further comprising:

and the second terminal equipment receives third indication information sent by the second network equipment, wherein the third indication information is used for indicating the second cellular communication configuration.
The method of claim 40, further comprising:

and the second terminal device receives third indication information sent by the second network device, wherein the third indication information is used for indicating the sidestream communication capability or sidestream communication configuration which can be used by the second terminal device.
The method of any one of claims 40 to 42, further comprising:

and the second terminal device receives fourth indication information sent by the first terminal device, wherein the fourth indication information is used for indicating the sidestream communication capability which needs to be reported to the first terminal device by the second terminal device.
The method of any one of claims 39 to 43, further comprising:

and the second terminal equipment receives second configuration information sent by the first terminal equipment, wherein the second configuration information comprises a sideline communication configuration for communication between the first terminal equipment and the second terminal equipment.
A method for capability reporting of a sidelink, the method comprising:

the method comprises the steps that a first network device receives at least one first index reported by a first terminal device, wherein the at least one first index is used for identifying first side communication capacity supported by the first terminal device.
The method of claim 45, further comprising:

the first network equipment receives a first mapping set and a second mapping set reported by the first terminal equipment;

the first mapping set comprises a mapping relation between at least one sideline capability identifier and at least one sideline communication capability supported by the terminal equipment, the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier and at least one index, and the at least one index comprises the at least one first index.
The method of claim 46, further comprising:

the first network device determines the first side communication capability according to the first mapping set, the second mapping set and the at least one first index.
The method according to any one of claims 45 to 47, wherein the receiving, by the first network device, the at least one first index reported by the first terminal device comprises:

the first network device receives the at least one first index associated with at least one sidelink frequency band combination reported by the first terminal device.
The method of any one of claims 45 to 48, further comprising:

and the first network equipment receives Uu interface information which is reported by the first terminal equipment and is used for controlling sidestream communication.
The method of claim 49, wherein the Uu interface information comprises at least one of: radio access technology RAT information of a Uu interface, cell group information of the Uu interface, frequency band information of the Uu interface, cell information of the Uu interface, mode information of the Uu interface, and carrier information of the Uu interface.
The method of claim 49 or 50, wherein the receiving, by the first network device, the Uu interface information reported by the first terminal device for controlling sidelink communication includes:

the first network device receives the Uu interface information reported by the first terminal device based on at least one of the following granularities:

at least one of a terminal device, a sideline frequency band combination, and a sideline frequency band combination.
The method of any one of claims 45 to 51, further comprising:

the first network device sends first indication information to the first terminal device, where the first indication information is used to indicate that the first terminal device reports the first side communication capability to the first network device.
The method of claim 52, wherein the first indication information is used to indicate capability information of sideline communications that needs to be reported by the first terminal device.
The method of claim 53, wherein the capability information comprises RAT information of sidelink communication and/or frequency band information of sidelink communication.
The method of claim 52, wherein the first indication information is used for indicating RAT information that needs to be reported by the first terminal device.
The method of any one of claims 45 to 55, further comprising:

and the first network equipment receives at least one second index reported by the first terminal equipment, wherein the at least one second index is used for identifying the first cellular communication capability supported by the first terminal equipment.
The method of claim 56, further comprising:

the first network equipment receives a third mapping set and a fourth mapping set reported by the first terminal equipment;

wherein the third mapping set comprises a mapping relationship between at least one cellular capability identifier and at least one cellular communication capability supported by the terminal device, the fourth mapping set comprises a mapping relationship between a combination of at least one cellular capability identifier and at least one index, and the at least one index comprises the at least one second index.
The method of claim 57, further comprising:

the first network device determines the first cellular communication capability according to the third mapping set, a fourth mapping set and the at least one second index.
The method of claim 57 or 58, wherein the second set of mappings is independent of the fourth set of mappings;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The method according to claim 57 or 58, wherein the second mapping set and the fourth mapping set are jointly defined;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The method of claim 59 or 60, wherein the RAT of the sidelink communications for which the second mapping set is directed and the RAT of the cellular communications for which the fourth mapping set is directed are different.
The method according to any one of claims 56 to 61, wherein the receiving, by the first network device, the at least one second index reported by the first terminal device comprises:

the first network device receives the at least one second index associated with at least one cellular frequency band combination reported by the first terminal device.
The method of claim 62, wherein a first set of frequency band combinations in which the at least one cellular frequency band combination is located is defined jointly with a second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The method of claim 62, wherein the first set of frequency band combinations in which the at least one cellular frequency band combination is located is independent of the second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The method of claim 64, wherein the first set of frequency band combinations comprises first information indicating a sidelink frequency band combination simultaneously supported by a cellular frequency band combination of the at least one cellular frequency band combination.
The method of claim 64, wherein the second set of frequency band combinations comprises second information indicating a cellular frequency band combination simultaneously supported by a sideline frequency band combination of the at least one sideline frequency band combination.
The method of any of claims 63-66, wherein a RAT of cellular communication for which the first set of frequency band combinations is intended and a RAT of sidelink communication for which the second set of frequency band combinations is intended are different.
The method of claim 45, further comprising:

the first network device receives a fifth mapping set reported by the first terminal device, where the fifth mapping set includes a mapping relationship between at least one sidestream communication capability and at least one index, and the at least one index includes the at least one first index.
The method of any one of claims 45 to 68, further comprising:

the first network device sends first configuration information to the first terminal device, wherein the first configuration information comprises a sideline communication configuration for communication between the first terminal device and a second terminal device.
The method of claim 69, wherein at least one candidate value for a first parameter is included in the first configuration information.
The method of claim 70, further comprising:

the first network device receives second indication information sent by the first terminal device, where the second indication information is used to indicate that at least one candidate value is not applicable to a second sidestream communication capability, and the second sidestream communication capability is a sidestream communication capability for communication between the first terminal device and a second terminal device.
The method of any one of claims 69 to 71, further comprising:

and the first network equipment receives at least one third index reported by the first terminal equipment, wherein the at least one third index refers to a sideline communication capability for identifying communication between the first terminal equipment and the second terminal equipment.
The method of claim 72, wherein the first network device sends configuration information to the first terminal device, comprising:

and the first network equipment sends the configuration information to the first terminal equipment according to the second side communication capacity.
A terminal device, comprising:

a communication unit, configured to report at least one first index to a first network device, where the at least one first index is used to identify a first side communication capability supported by the terminal device.
The terminal device of claim 74, wherein the communication unit is further configured to:

reporting a first mapping set and a second mapping set to the first network equipment;

the first mapping set comprises a mapping relation between at least one sideline capability identifier and at least one sideline communication capability supported by the terminal equipment, the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier and at least one index, and the at least one index comprises the at least one first index.
The terminal device according to claim 74 or 75, wherein the communication unit is specifically configured to:

reporting the at least one first index associated with at least one sidelink frequency band combination to the first network device.
The terminal device according to any of claims 74-76, wherein the communication unit is further configured to:

and reporting Uu interface information for controlling sidestream communication to the first network equipment.
The terminal device of claim 77, wherein the Uu interface information comprises at least one of: radio access technology RAT information of a Uu interface, cell group information of the Uu interface, frequency band information of the Uu interface, cell information of the Uu interface, mode information of the Uu interface, and carrier information of the Uu interface.
The terminal device according to claim 77 or 78, wherein the communication unit is specifically configured to:

reporting the Uu interface information to the first network device based on at least one of the following granularities:

at least one of a terminal device, a sideline frequency band combination, and a sideline frequency band combination.
The terminal device of any one of claims 74-79, wherein the communication unit is further configured to:

and receiving first indication information sent by the first network device, where the first indication information is used to indicate that the terminal device reports the first side communication capability to the first network device.
The terminal device of claim 80, wherein the first indication information is used to indicate capability information of sidelink communications that needs to be reported by the terminal device.
The terminal device of claim 81, wherein the capability information comprises RAT information for sidelink communications and/or frequency band information for sidelink communications.
The terminal device of claim 80, wherein the first indication information is used to indicate RAT information that needs to be reported by the terminal device.
The terminal device of claim 83, wherein the terminal device further comprises:

and a processing unit, configured to determine, according to the RAT of cellular communication indicated by the first indication information, the RAT of sidelink communication reported to the first network device.
The terminal device of claim 84, wherein the processing unit is specifically configured to:

and determining the RAT of the sidestream communication reported to the first network device according to the association relationship between at least one RAT of the cellular communication and the RAT of the sidestream communication and the RAT of the cellular communication indicated by the first indication information.
The terminal device according to any of claims 74-85, wherein the communication unit is further configured to:

reporting at least one second index to the first network device, where the at least one second index is used to identify the first cellular communication capability supported by the terminal device.
The terminal device of claim 86, wherein the communication unit is further configured to:

reporting a third mapping set and a fourth mapping set to the first network equipment;

wherein the third mapping set comprises a mapping relationship between at least one cellular capability identifier and at least one cellular communication capability supported by the terminal device, the fourth mapping set comprises a mapping relationship between a combination of at least one cellular capability identifier and at least one index, and the at least one index comprises the at least one second index.
The terminal device of claim 87, wherein the second mapping set is independent of the fourth mapping set;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The terminal device of claim 87, wherein a second mapping set and the fourth mapping set are jointly defined;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The terminal device of claim 88 or 89, wherein the RAT for sidelink communications for which the second mapping set is intended and the RAT for cellular communications for which the fourth mapping set is intended are different.
The terminal device according to any one of claims 86 to 90, wherein the communication unit is specifically configured to:

reporting the at least one second index associated with at least one cellular frequency band combination to the first network device.
The terminal device of claim 91, wherein a first set of frequency band combinations in which the at least one cellular frequency band combination is located is jointly defined with a second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The terminal device of claim 91, wherein the first set of frequency band combinations in which the at least one cellular frequency band combination is located is independent of the second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The terminal device of claim 93, wherein the first set of frequency band combinations comprises first information indicating which sidelink frequency band combinations of the at least one cellular frequency band combination are simultaneously supported.
The terminal device of claim 93, wherein the second set of frequency band combinations comprises second information indicating a cellular frequency band combination simultaneously supported by a sidelink frequency band combination of the at least one sidelink frequency band combination.
The terminal device of any one of claims 92-95, wherein the RAT of cellular communication for which the first set of frequency band combinations is intended and the RAT of sidestream communication for which the second set of frequency band combinations is intended are different.
The terminal device of claim 74, wherein the communication unit is further configured to:

reporting a fifth mapping set to the first network device, where the fifth mapping set includes a mapping relationship between at least one sidestream communication capability and at least one index, and the at least one index includes the at least one first index.
The terminal device according to any of claims 74-97, wherein the communication unit is further configured to:

receiving at least one third index sent by a second terminal device, the at least one third index referencing a second side-communication capability identifying communication between the second terminal device and the terminal device.
The terminal device of claim 98, wherein the communication unit is further configured to:

and receiving first configuration information sent by the first network device, wherein the first configuration information comprises a sideline communication configuration for communication between the terminal device and the second terminal device.
The terminal device of claim 99, wherein the first configuration information comprises at least one candidate value for a first parameter;

the terminal device further includes:

a processing unit configured to determine a usage value for the first parameter according to the second side communication capability and the at least one candidate value.
The terminal device of claim 100, wherein the processing unit is specifically configured to:

determining a first candidate value of the at least one candidate value as a used value for the first parameter if the first candidate value is applicable to the second sidelink communications capability.
The terminal device of claim 100, wherein if the at least one candidate value is not applicable to the second side communication capability, the communication unit is further configured to:

sending second indication information to the first network device, the second indication information indicating that the at least one candidate value is not applicable to the second sidelink communication capability; or

The processing unit is further configured to reestablish a connection with the first network device.
The terminal device of claim 100, wherein the processing unit is specifically configured to:

determining a default value of the first parameter as the usage value if the at least one candidate value is not applicable to the second side communication capability.
The terminal device according to any of claims 99-103, wherein the communication unit is further configured to:

and reporting the information of the second side communication capacity to the first network equipment.
The terminal device of any one of claims 99-104, wherein the communication unit is further configured to:

and sending second configuration information to the second terminal device, wherein the second configuration information comprises a sideline communication configuration for communication between the terminal device and the second terminal device.
A terminal device, comprising:

a communication unit, configured to receive at least one third index sent by a second terminal device, where the at least one third index refers to a second side communication capability that identifies communication between the second terminal device and the terminal device.
The terminal device of claim 106, wherein the communication unit is further configured to:

and receiving first configuration information sent by the first network device, wherein the first configuration information comprises a sideline communication configuration for communication between the terminal device and the second terminal device.
The terminal device of claim 107, wherein the first configuration information comprises at least one candidate value for a first parameter;

the terminal device further includes:

a processing unit configured to determine a usage value for the first parameter according to the second side communication capability and the at least one candidate value.
The terminal device of claim 108, wherein the processing unit is specifically configured to:

determining a first candidate value of the at least one candidate value as a used value for the first parameter if the first candidate value is applicable to the second sidelink communications capability.
The terminal device of claim 108, wherein if the at least one candidate value is not applicable to the second side communication capability, the communication unit is further configured to:

sending second indication information to the first network device, the second indication information indicating that the at least one candidate value is not applicable to the second sidelink communication capability; or

The processing unit is further configured to reestablish a connection with the first network device.
The terminal device of claim 108, wherein the processing unit is specifically configured to:

determining a default value of the first parameter as the usage value if the at least one candidate value is not applicable to the second side communication capability.
A terminal device, comprising:

a communication unit configured to send at least one third index to a first terminal device, the at least one third index referring to a second side communication capability identifying communication between the terminal device and the first terminal device.
The terminal device of claim 112, wherein the terminal device further comprises:

a processing unit configured to determine the second side communication capability according to at least one of the following capabilities:

the terminal device comprises a first cellular communication capability or a first cellular communication configuration for communication between the terminal device and the first network device, a second cellular communication capability or a second cellular communication configuration for communication between the terminal device and the second network device, a sidestream communication capability for communication between the terminal device and other terminal devices except the first terminal device, a sidestream communication capability or a sidestream communication configuration usable by the terminal device, and a sidestream communication capability which is required to be reported to the first terminal device by the terminal device.
The terminal device of claim 113, wherein the communication unit is further configured to:

receiving third indication information sent by the second network device, where the third indication information is used for indicating the second cellular communication configuration.
The terminal device of claim 113, wherein the communication unit is further configured to:

and receiving third indication information sent by the second network device, where the third indication information is used to indicate a sidestream communication capability or a sidestream communication configuration usable by the terminal device.
The terminal device of any one of claims 113-115, wherein the communication unit is further configured to:

and receiving fourth indication information sent by the first terminal device, where the fourth indication information is used to indicate a sideline communication capability that the terminal device needs to report to the first terminal device.
The terminal device of any one of claims 112-116, wherein the communication unit is further configured to:

and receiving second configuration information sent by the first terminal equipment, wherein the second configuration information comprises a sideline communication configuration for communication between the first terminal equipment and the terminal equipment.
A network device, comprising:

a communication unit, configured to receive at least one first index reported by a first terminal device, where the at least one first index is used to identify a first side communication capability supported by the first terminal device.
The network device of claim 115, wherein the communication unit is further configured to:

receiving a first mapping set and a second mapping set reported by the first terminal equipment;

the first mapping set comprises a mapping relation between at least one sideline capability identifier and at least one sideline communication capability supported by the terminal equipment, the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier and at least one index, and the at least one index comprises the at least one first index.
The network device of claim 119, wherein the network device further comprises:

a processing unit, configured to determine the first side communication capability according to the first mapping set, the second mapping set, and the at least one first index.
The network device according to any one of claims 118 to 120, wherein the communication unit is specifically configured to:

receiving the at least one first index associated with at least one sidelink frequency band combination reported by the first terminal device.
The network device of any one of claims 118-121, wherein the communication unit is further configured to:

and receiving Uu interface information which is reported by the first terminal equipment and is used for controlling sidestream communication.
The network device of claim 122, wherein the Uu interface information comprises at least one of: radio access technology RAT information of a Uu interface, cell group information of the Uu interface, frequency band information of the Uu interface, cell information of the Uu interface, mode information of the Uu interface, and carrier information of the Uu interface.
The network device of claim 122 or 123, wherein the communication unit is specifically configured to:

receiving the Uu interface information reported by the first terminal device based on at least one of the following granularities:

at least one of a terminal device, a sideline frequency band combination, and a sideline frequency band combination.
The network device of any one of claims 118-123, wherein the communication unit is further configured to:

and sending first indication information to the first terminal device, wherein the first indication information is used for indicating the first terminal device to report the first side communication capability to the network device.
The network device of claim 125, wherein the first indication information is used to indicate capability information of sidestream communication that needs to be reported by the first terminal device.
The network device of claim 126, wherein the capability information comprises RAT information for sidelink communications and/or frequency band information for sidelink communications.
The network device of claim 125, wherein the first indication information is used to indicate RAT information that needs to be reported by the first terminal device.
The network device of any one of claims 118-128, wherein the communication unit is further configured to:

and receiving at least one second index reported by the first terminal equipment, wherein the at least one second index is used for identifying the first cellular communication capability supported by the first terminal equipment.
The network device of claim 129, wherein the communication unit is further configured to:

receiving a third mapping set and a fourth mapping set reported by the first terminal equipment;

wherein the third mapping set comprises a mapping relationship between at least one cellular capability identifier and at least one cellular communication capability supported by the terminal device, the fourth mapping set comprises a mapping relationship between a combination of at least one cellular capability identifier and at least one index, and the at least one index comprises the at least one second index.
The network device of claim 130, wherein the network device further comprises:

a processing unit configured to determine the first cellular communication capability according to the third mapping set, the fourth mapping set and the at least one second index.
The network device of claim 130 or 131, wherein the second set of mappings is independent of the fourth set of mappings;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The network device of claim 130 or 131, wherein the second set of mappings and the fourth set of mappings are jointly defined;

and the second mapping set comprises a mapping relation between a combination of at least one sideline capability identifier supported by the terminal equipment and at least one index, wherein the at least one index comprises the at least one first index.
The network device of claim 132 or 133, wherein the RAT of the sidelink communications for which the second mapping set is directed and the RAT of the cellular communications for which the fourth mapping set is directed are different.
The network device according to any one of claims 129 to 134, wherein the communication unit is specifically configured to:

receiving the at least one second index associated with at least one cellular frequency band combination reported by the first terminal device.
The network device of claim 135, wherein a first set of frequency band combinations in which the at least one cellular frequency band combination is located is jointly defined with a second set of frequency band combinations in which the at least one sidelink frequency band combination is located.
The network device of claim 135, wherein the at least one cellular frequency band combination is in a first set of frequency band combinations that is independent of a second set of frequency band combinations in which the at least one sidelink frequency band combination is in.
The network device of claim 137, wherein the first set of frequency band combinations comprises first information indicating sidelink frequency band combinations that are simultaneously supported by a cellular frequency band combination of the at least one cellular frequency band combination.
The network device of claim 137, wherein the second set of frequency band combinations comprises second information indicating a cellular frequency band combination simultaneously supported by a sidelink frequency band combination of the at least one sidelink frequency band combination.
The network device of any one of claims 136-139, wherein a RAT of cellular communication for which the first set of frequency band combinations is intended is different from a RAT of sidestream communication for which the second set of frequency band combinations is intended.
The network device of claim 118, wherein the communication unit is further configured to:

receiving a fifth mapping set reported by the first terminal device, where the fifth mapping set includes a mapping relationship between at least one sidestream communication capability and at least one index, and the at least one index includes the at least one first index.
The network device of any one of claims 118-141, wherein the communication unit is further configured to:

and sending first configuration information to the first terminal equipment, wherein the first configuration information comprises a sideline communication configuration for communication between the first terminal equipment and the second terminal equipment.
The network device of claim 142, wherein the first configuration information comprises at least one candidate value for a first parameter.
The network device of claim 143, wherein the communication unit is further configured to:

and receiving second indication information sent by the first terminal device, wherein the second indication information is used for indicating that at least one candidate value is not applicable to a second sidestream communication capability, and the second sidestream communication capability is the sidestream communication capability of communication between the first terminal device and the second terminal device.
The network device of any one of claims 142-144, wherein the communication unit is further configured to:

and receiving at least one third index reported by the first terminal equipment, wherein the at least one third index refers to a sideline communication capability for identifying communication between the first terminal equipment and the second terminal equipment.
The network device of claim 145, wherein the communication unit is specifically configured to:

and sending the configuration information to the first terminal equipment according to the second side communication capacity.
A terminal device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any of claims 1-32.
A terminal device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 33 to 38.
A terminal device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 39 to 44.
A network device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 45 to 73.
An apparatus, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 32.
An apparatus, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 33 to 38.
An apparatus, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 39 to 44.
An apparatus, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 45 to 73.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 32.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 33 to 38.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 39 to 44.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 45 to 73.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 32.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 33 to 38.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 39 to 44.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 45 to 73.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1-32.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 33 to 38.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 39 to 44.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 45 to 73.