CN113508618A

CN113508618A - Sidelink communication method and device, and terminal

Info

Publication number: CN113508618A
Application number: CN201980093291.4A
Authority: CN
Inventors: 卢前溪; 杨皓睿; 刘建华
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2021-10-15
Anticipated expiration: 2039-08-15
Also published as: CN113508618B; WO2021026905A1

Abstract

The embodiment of the application provides a sidelink communication method, a device and a terminal, wherein the method comprises the following steps: the first terminal sends a second RAT associated message to the second terminal over the first radio access technology, RAT.

Description

Sidelink communication method and device, and terminal

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a sidelink communication method, a device and a terminal.

Background

Device-to-Device (D2D) communication is based on the Sidelink (SL) transmission technique, and unlike the conventional cellular system in which communication data is received or transmitted through a base station, D2D is a direct terminal-to-terminal communication method, and thus has higher spectral efficiency and lower transmission delay.

In D2D communication, the basic design mechanism is performed inside a Radio Access Technology (RAT), such as a User Equipment (UE) 1 sending information about RAT1 to UE2 over RAT 1. However, the mechanism of sidelink communication across RATs has not been clarified yet.

Disclosure of Invention

The embodiment of the application provides a sidelink communication method, a device and a terminal.

The sidelink communication method provided by the embodiment of the application comprises the following steps:

the first terminal sends a message associated with the second RAT to the second terminal through the first RAT.

The sidelink communication device that this application embodiment provided includes:

a sending unit, configured to send a message associated with a second RAT to a second terminal through a first RAT.

The terminal provided by the embodiment of the application comprises 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 to execute the sidelink communication method.

The chip provided by the embodiment of the application is used for realizing the sidelink communication method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the side link communication method.

A computer-readable storage medium provided in an embodiment of the present application stores a computer program, where the computer program enables a computer to execute the above-mentioned sidelink communication method.

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions enable a computer to execute the above-mentioned sidelink communication method.

The computer program provided by the embodiment of the present application, when running on a computer, causes the computer to execute the above-mentioned sidelink communication method.

By the technical scheme, a cross-RAT sidelink communication mechanism is provided, a mode of forcing a terminal to independently transmit messages in different RATs is avoided, the flexibility of signaling transmission is improved, and the signaling overhead is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

fig. 2 is a schematic diagram of mode a in D2D communication provided in an embodiment of the present application;

fig. 3 is a schematic diagram of mode B in D2D communication provided by an embodiment of the present application;

fig. 4 is a flowchart illustrating a sidelink communication method according to an embodiment of the present application;

fig. 5 is a first flowchart illustrating a cross-RAT sidelink communication method according to an embodiment of the present disclosure;

fig. 6 is a second flowchart illustrating a cross-RAT sidelink communication method according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a sidelink communications apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 10 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.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 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, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be 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, or the like.

The communication system 100 further comprises at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a 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 arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is 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. A terminal can 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 in a 5G network, or a terminal in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminals 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing 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 addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description will be made of related technologies related to the embodiments of the present application.

In the Third Generation partnership Project (3 GPP), D2D defines two transmission modes: mode a and mode B. Mode a and mode B are described below.

Mode A: as shown in fig. 2, the transmission resource of the terminal is allocated by the base station, and specifically, the base station issues a control message for indicating Grant (Grant) resource to the terminal through a Downlink (DL); then, the terminal transmits data on the SL according to the transmission resource allocated by the base station. In mode a, the base station may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

And (3) mode B: as shown in fig. 3, the terminal acquires an available transmission resource set in the resource pool by means of listening, and the terminal randomly selects a resource from the transmission resource set to transmit the sidelink data. Because the service in the car networking system has a periodic characteristic, the terminal generally adopts a semi-static transmission mode, that is, after the terminal selects one transmission resource, the resource is continuously used in a plurality of transmission cycles, so that the probability of resource reselection and resource conflict is reduced. The terminal can carry the information of the reserved secondary transmission resource in the control information transmitted this time, so that other terminals can judge whether the resource is reserved and used by the terminal by detecting the control information of the terminal, and the purpose of reducing resource conflict is achieved.

It should be noted that, the mode a is used to indicate that the transmission resource of the terminal is allocated by the base station, the mode B is used to indicate that the transmission resource of the terminal is selected by the terminal, and the mode a and the mode B may also be defined as other transmission modes, such as mode 1 and mode 2, which is not limited in this embodiment of the present application.

In 3GPP, D2D was studied in the following different stages.

Proximity based Service (ProSe): in Rel-12/13, D2D was studied for ProSe scenarios, which are mainly directed to public safety class traffic.

Vehicle networking (Vehicle to influencing, V2X): in Rel-14/15, D2D was studied for the V2X scenario, which is mainly directed to traffic for vehicle-to-vehicle and vehicle-to-vehicle communications that move at relatively high speeds.

Wearable device (FeD 2D): in Rel-14, D2D was studied for a scenario where a wearable device accesses a network through a cell phone, which is mainly oriented to a scenario where the mobile device is low in moving speed and low in power access.

In D2D communication, the basic design mechanism is performed inside the RAT, for example, UE1 sends information related to RAT1 (e.g., sidelink control information, sidelink measurement information of RAT 1) to UE2 on RAT1, because the standardization work of two different RATs of LTE and NR is performed only for V2X, while V2X is standardized only for broadcast in LTE, and the specific control and measurement mechanism depends on unicast communication and multicast communication, which are standardized only in NR V2X, so there is no need for control and measurement across RATs.

In Rel-17, 3GPP will discuss NR ProSe, and LTE ProSe is for unicast communication and multicast communication, so there is a possibility that LTE ProSe and NR ProSe perform cross-RAT control and measurement. In order to achieve the purpose of cross-RAT control and measurement, the following technical solutions of the embodiments of the present application are proposed.

All technical solutions of the embodiments of the present application are applicable to a D2D communication system, and the terminal in the embodiments of the present application may be a vehicle-mounted terminal, a handheld terminal, a Personal Digital Assistant (PDA), a wearable terminal, or the like.

Fig. 4 is a schematic flowchart of a sidelink communication method provided in an embodiment of the present application, and as shown in fig. 4, the sidelink communication method includes the following steps:

step 401: the first terminal sends a message associated with the second RAT to the second terminal through the first RAT.

In the embodiment of the application, the first RAT and the second RAT correspond to two different access modes. In an alternative embodiment, the first RAT is LTE and the second RAT is NR. In another alternative embodiment, the first RAT is NR and the second RAT is LTE.

In the embodiment of the application, device-to-device communication between the first terminal and the second terminal may be achieved through the first RAT, and device-to-device communication may also be achieved through the second RAT. To implement a sidelink communication mechanism across RATs, a first terminal sends a second RAT associated message to a second terminal over a first RAT.

In an optional embodiment of the present application, the second RAT associated message includes at least one of:

PC 5-Radio Resource Control (RRC) message, PC 5-Signaling (S) message, PC5 discovery message, PC5 Physical (PHY) layer message, PC5 Media Access Control (MAC) layer message, PC5 Radio Link Control (RLC) layer message, PC5 Packet Data Convergence Protocol (PDCP) Control Channel (Control Channel), PC5PDCP Protocol Data Unit (PDU).

The messages related to the second RAT are all referred to as PC5 interface related messages. Wherein the PC5 interface is an interface between terminals, such as an interface between the first terminal and the second terminal.

In this embodiment of the application, the second RAT-related message further includes self attribute information of the first terminal on the second RAT and/or parameter configuration information of the second terminal on the second RAT, where the self attribute information and/or the parameter configuration information may be for a sidelink and may also be for a first link (specifically, an uplink and/or a downlink), which are respectively described below.

The second RAT associated message comprises first attribute information of the first terminal on the second RAT for a sidelink and/or first parameter configuration information of the second terminal on the second RAT for the sidelink.

In an alternative embodiment, the first attribute information includes at least one of: sidelink identity information, sidelink capability information, sidelink measurement information.

Further, optionally, the sidelink identity information includes at least one of the following information associated with the sidelink: application identification, address, logical channel identification, logical channel group identification.

Further, optionally, the sidelink measurement information includes at least one of: channel Busy Ratio (CBR) measurement information, Reference Signal Received Power (RSRP) measurement information.

In an alternative embodiment, the first parameter configuration information includes at least one of: configuration information for sidelink measurements, configuration information for sidelink communications, configuration information for sidelink capability transmissions.

Further, optionally, the configuration information for sidelink measurement includes at least one of: CBR measurement configuration information, RSRP measurement configuration information.

Further, optionally, the configuration information for sidelink communication includes at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of a Service Data Adaptation Protocol (SDAP) layer.

Further, optionally, the configuration information sent for the sidelink capability is used to instruct the second terminal to determine the communication capability of the second RAT that needs to be reported.

The second RAT associated message comprises second attribute information of the first terminal on the second RAT for a first link and/or second parameter configuration information of the second terminal on the second RAT for a first link, wherein the first link comprises an uplink and/or a downlink.

In an alternative embodiment, the second attribute information includes at least one of: first link identity information, first link capability information, first link measurement information.

Further, optionally, the first link identity information includes at least one of the following information associated with the first link: a Globally Unique Temporary UE Identity (GUTI), an International Mobile Subscriber Identity (IMSI), a Subscription hidden Identity (sui), a Subscription Permanent Identity (SUPI), a Tracking Area Identity (TAI) information, a Cell identification information, a Cell Radio Network Temporary Identity (C-RNTI) information, a logical channel Identity, a logical channel group Identity.

Further, optionally, the first link measurement information includes at least one of: RSRP measurement information, Reference Signal Receiving Quality (RSRQ) measurement information.

In an alternative embodiment, the second parameter configuration information includes at least one of:

configuration information for first link measurements, configuration information for first link communications.

Further, optionally, the configuration information for the first link measurement includes at least one of: RSRP measurement configuration information and RSRQ measurement configuration information.

Further, optionally, the configuration information for the first link communication includes at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.

In an optional embodiment of the present application, after the first terminal sends a message associated with a second RAT to a second terminal through a first RAT, the first terminal communicates with the second terminal through the first RAT and/or the second RAT.

The technical solution of the embodiment of the present application is illustrated below with reference to fig. 5 and 6.

As shown in fig. 5, fig. 5 is a first flowchart of a cross-RAT sidelink communication method provided in the embodiment of the present application, including the following steps:

step 501: the first terminal sends a RAT2 associated message to the second terminal over RAT 1.

Here, the RAT2 associated message includes at least one of: PC5-RRC message, PC5-S message, PC5 discovery message, PC5PHY layer message, PC5MAC layer message, PC5RLC layer message, PC5PDCP control channel, PC5PDCP PDU.

Further, the RAT2 associated message further includes self attribute information of the first terminal on the RAT2, specifically, the RAT2 associated message further includes at least one of the following:

sidelink identity information of the first terminal on RAT 2;

sidelink capability information of the first terminal on the RAT 2;

sidelink measurement information for the first terminal on RAT 2.

Further, the RAT2 associated message further includes parameter configuration information of the second terminal on the RAT2, specifically, the RAT2 associated message further includes at least one of the following:

configuration information for sidelink measurements;

configuration information for sidelink communications;

configuration information sent for sidelink capabilities.

Step 502: the second terminal communicates with the first terminal via RAT1 and/or RAT 2.

As shown in fig. 6, fig. 6 is a second flowchart of a cross-RAT sidelink communication method provided in the embodiment of the present application, including the following steps:

step 601: the first terminal communicates with a Network (NW) 1 via a Uu interface.

Step 602: the second terminal communicates with the NW2 via the Uu interface.

It should be noted that there is no sequence between the above step 601 and step 602.

Step 603: the first terminal sends a RAT2 associated message to the second terminal over RAT 1.

uplink identity information and/or downlink side identity information of the first terminal on the RAT 2;

uplink capability information and/or downlink capability information of the first terminal on the RAT 2;

capability information measurement information and/or downlink measurement information of the first terminal on the RAT 2.

configuration information for uplink measurements and/or downlink measurements;

configuration information for uplink communications and/or downlink communications.

Step 604: the second terminal communicates with the first terminal via RAT1 and/or RAT 2.

Fig. 7 is a schematic structural diagram of a sidelink communication device according to an embodiment of the present application, where as shown in fig. 7, the sidelink communication device includes:

a sending unit 701, configured to send a message associated with a second RAT to a second terminal through a first RAT.

PC5-RRC message, PC5-S message, PC5 discovery message, PC5PHY layer message, PC5MAC layer message, PC5RLC layer message, PC5PDCP control channel, PC5PDCP PDU.

In an optional embodiment of the present application, the second RAT-associated message includes first attribute information for a sidelink on the second RAT of the first terminal and/or first parameter configuration information for a sidelink on the second RAT of the second terminal.

In an optional embodiment of the present application, the first attribute information includes at least one of:

sidelink identity information, sidelink capability information, sidelink measurement information.

In an optional embodiment of the present application, the sidelink identity information includes at least one of the following information associated with the sidelink: application identification, address, logical channel identification, logical channel group identification.

In an optional embodiment of the present application, the sidelink measurement information includes at least one of: CBR measurement information, RSRP measurement information.

In an optional embodiment of the present application, the first parameter configuration information includes at least one of:

configuration information for sidelink measurements, configuration information for sidelink communications, configuration information for sidelink capability transmissions.

In an optional embodiment of the present application, the configuration information for sidelink measurement includes at least one of: CBR measurement configuration information, RSRP measurement configuration information.

In an optional embodiment of the present application, the configuration information for sidelink communication includes at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.

In an optional embodiment of the present application, the configuration information sent for the sidelink capability is used to instruct the second terminal to determine a communication capability related to the second RAT that needs to be reported.

In an optional embodiment of the present application, the second RAT associated message includes second attribute information of the first terminal on the second RAT for a first link, and/or second parameter configuration information of the second terminal on the second RAT for a first link, where the first link includes an uplink and/or a downlink.

In an optional embodiment of the present application, the second attribute information includes at least one of:

first link identity information, first link capability information, first link measurement information.

In an optional embodiment of the present application, the first link identity information includes at least one of the following information associated with the first link: GUTI, IMSI, SUCI, SUPI, TAI information, cell identification information, C-RNTI information, logical channel identification, logical channel group identification.

In an optional embodiment of the present application, the first link measurement information includes at least one of: RSRP measurement information, RSRQ measurement information.

In an optional embodiment of the present application, the second parameter configuration information includes at least one of:

In an optional embodiment of the present application, the configuration information for the first link measurement includes at least one of: RSRP measurement configuration information and RSRQ measurement configuration information.

In an optional embodiment of the present application, the configuration information for the first link communication includes at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.

In an optional embodiment of the present application, the apparatus further comprises:

a communication unit 702, configured to communicate with the second terminal through the first RAT and/or the second RAT.

It should be understood by those skilled in the art that the above-mentioned related description of the sidelink communication apparatus according to the embodiments of the present application can be understood by referring to the related description of the sidelink communication method according to the embodiments of the present application.

Fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device may be a terminal or a network device, and the communication device 800 shown in fig. 8 includes a processor 810, and the processor 810 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. 8, the communication device 800 may also include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, as shown in fig. 8, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 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 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

Optionally, the communication device 800 may specifically be a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 800 may specifically be a mobile terminal/terminal according to this embodiment, and the communication device 800 may implement a corresponding process implemented by the mobile terminal/terminal in each method according to this embodiment, which is not described herein again for brevity.

Fig. 9 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 900 shown in fig. 9 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. 9, the chip 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, the chip 900 may further comprise an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 900 may further include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the 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.

Optionally, the chip may be applied to the mobile terminal/terminal in the embodiment of the present application, and the chip may implement a corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, and for brevity, no further description is given here.

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.

Fig. 10 is a schematic block diagram of a communication system 1000 provided in an embodiment of the present application. As shown in fig. 10, the communication system 1000 includes a terminal 1010 and a network device 1020.

The terminal 1010 may be configured to implement corresponding functions implemented by the terminal in the foregoing method, and the network device 1020 may be configured to implement corresponding functions implemented by the network device in the foregoing method, which is not described herein for brevity.

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.

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 the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is 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 the network device in the embodiment of the present application, 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.

Optionally, the computer program product may be applied to the mobile terminal/terminal in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal 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 the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the 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.

Optionally, the computer program may be applied to the mobile terminal/terminal in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein again for brevity.

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 of sidelink communication, said method comprising:

the first terminal sends a second RAT associated message to the second terminal over the first radio access technology, RAT.
The method of claim 1, wherein the second RAT associated message comprises at least one of:

PC5-RRC message, PC5-S message, PC5 discovery message, PC5PHY layer message, PC5MAC layer message, PC5RLC layer message, PC5PDCP control channel, PC5PDCP PDU.
The method according to claim 1 or 2, wherein the second RAT associated message comprises first attribute information for a sidelink on the second RAT for the first terminal and/or first parameter configuration information for a sidelink on the second RAT for the second terminal.
The method of claim 3, wherein the first attribute information comprises at least one of:

sidelink identity information, sidelink capability information, sidelink measurement information.
The method of claim 4, wherein the sidelink identity information comprises sidelink associated information of at least one of: application identification, address, logical channel identification, logical channel group identification.
The method of claim 4 or 5, wherein the sidelink measurement information comprises at least one of: CBR measurement information, RSRP measurement information.
The method of any of claims 3 to 6, wherein the first parameter configuration information comprises at least one of:

configuration information for sidelink measurements, configuration information for sidelink communications, configuration information for sidelink capability transmissions.
The method of claim 7, wherein the configuration information for sidelink measurements comprises at least one of: CBR measurement configuration information, RSRP measurement configuration information.
The method of claim 7 or 8, wherein the configuration information for sidelink communications comprises at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.
The method according to any of claims 7 to 9, wherein the configuration information sent for sidelink capability is used to instruct the second terminal to determine the communication capability of the second RAT that needs to be reported.
The method according to claim 1 or 2, wherein the second RAT associated message comprises second attribute information for a first link of the first terminal on the second RAT and/or second parameter configuration information for a first link of the second terminal on the second RAT, the first link comprising an uplink and/or a downlink.
The method of claim 11, wherein the second attribute information comprises at least one of:

first link identity information, first link capability information, first link measurement information.
The method of claim 12, wherein the first link identity information comprises at least one of the following information associated with the first link: GUTI, IMSI, SUCI, SUPI, TAI information, cell identification information, C-RNTI information, logical channel identification, logical channel group identification.
The method of claim 12 or 13, wherein the first link measurement information comprises at least one of: RSRP measurement information, RSRQ measurement information.
The method of any of claims 11 to 14, wherein the second parameter configuration information comprises at least one of:

configuration information for first link measurements, configuration information for first link communications.
The method of claim 15, wherein the configuration information for the first link measurement comprises at least one of: RSRP measurement configuration information and RSRQ measurement configuration information.
The method of claim 15 or 16, wherein the configuration information for the first link communication comprises at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.
The method of any of claims 1 to 17, wherein the method further comprises:

the first terminal communicates with the second terminal via the first RAT and/or the second RAT.
A sidelink communications apparatus, the apparatus comprising:

a sending unit, configured to send a message associated with a second RAT to a second terminal through a first RAT.
The apparatus of claim 19, wherein the second RAT associated message comprises at least one of:

PC5-RRC message, PC5-S message, PC5 discovery message, PC5PHY layer message, PC5MAC layer message, PC5RLC layer message, PC5PDCP control channel, PC5PDCP PDU.
The apparatus of claim 19 or 20, wherein the second RAT associated message comprises first attribute information for a sidelink on the second RAT for the first terminal and/or first parameter configuration information for a sidelink on the second RAT for the second terminal.
The apparatus of claim 21, wherein the first attribute information comprises at least one of:

sidelink identity information, sidelink capability information, sidelink measurement information.
The apparatus of claim 22, wherein the sidelink identity information comprises sidelink associated information of at least one of: application identification, address, logical channel identification, logical channel group identification.
The apparatus of claim 22 or 23, wherein the sidelink measurement information comprises at least one of: CBR measurement information, RSRP measurement information.
The apparatus according to any of claims 21 to 24, wherein the first parameter configuration information comprises at least one of:

configuration information for sidelink measurements, configuration information for sidelink communications, configuration information for sidelink capability transmissions.
The apparatus of claim 25, wherein the configuration information for sidelink measurements comprises at least one of: CBR measurement configuration information, RSRP measurement configuration information.
The apparatus of claim 25 or 26, wherein the configuration information for sidelink communications comprises at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.
The apparatus of any of claims 25 to 27, wherein the configuration information sent for sidelink capabilities is used to instruct the second terminal to determine communication capabilities with respect to the second RAT that need to be reported.
The apparatus of claim 19 or 20, wherein the second RAT associated message comprises second attribute information for a first link of the first terminal on the second RAT and/or second parameter configuration information for a first link of the second terminal on the second RAT, the first link comprising an uplink and/or a downlink.
The apparatus of claim 29, wherein the second attribute information comprises at least one of:

first link identity information, first link capability information, first link measurement information.
The apparatus of claim 30, wherein the first link identity information comprises at least one of the following information associated with the first link: GUTI, IMSI, SUCI, SUPI, TAI information, cell identification information, C-RNTI information, logical channel identification, logical channel group identification.
The apparatus of claim 30 or 31, wherein the first link measurement information comprises at least one of: RSRP measurement information, RSRQ measurement information.
The apparatus according to any of claims 29 to 32, wherein the second parameter configuration information comprises at least one of:

configuration information for first link measurements, configuration information for first link communications.
The apparatus of claim 33, wherein the configuration information for the first link measurement comprises at least one of: RSRP measurement configuration information and RSRQ measurement configuration information.
The apparatus of claim 33 or 34, wherein the configuration information for the first link communication comprises at least one of: configuration information of a PHY layer, configuration information of a MAC layer, configuration information of an RLC layer, configuration information of a PDCP layer, and configuration information of an SDAP layer.
The apparatus of any one of claims 19 to 35, wherein the apparatus further comprises:

a communication unit, configured to communicate with the second terminal through the first RAT and/or the second RAT.
A terminal, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 18.
A chip, 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 18.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 18.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 18.
A computer program for causing a computer to perform the method of any one of claims 1 to 18.