CN116114366A

CN116114366A - Method for communication between terminals, terminal device and network device

Info

Publication number: CN116114366A
Application number: CN202080105171.4A
Authority: CN
Inventors: 卢前溪; 刘建华
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2023-05-12
Also published as: WO2022082434A1

Abstract

A method for communication between terminals, a terminal device and a network device, capable of enabling communication between terminals, the method comprising: the method comprises the steps that a first terminal receives first information sent by a second terminal, wherein the first information comprises identity information of the second terminal; the first terminal sends the first information to first network equipment, wherein the first network equipment is network equipment of a cell where the first terminal resides; the first terminal receives a switching command sent by the first network device, wherein the switching command is used for indicating the first terminal to switch relay connection of the first terminal; and the first terminal establishes connection with the second terminal based on the switching command.

Description

Method for communication between terminals, terminal device and network device

Technical Field

The embodiment of the application relates to the field of communication, in particular to a method for communication between terminals, terminal equipment and network equipment.

Background

In some scenarios, the current remote UE is connected to the network via the Uu interface, a relay UE may be required to connect to the network due to the mobility of the remote UE, data is transferred between the remote UE and the network, and in other scenarios, the remote UE is connected to the network via a relay UE, a new relay UE may be required to connect to the network due to the mobility of the remote UE, data is transferred between the remote UE and the network. If the remote UE is in a connected state, the relay UE is in a disconnected state, such as an idle state or a deactivated state, in which case, how to implement the communication between the terminals is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method for communication between terminals, terminal equipment and network equipment, wherein the network equipment can receive identity information of a second terminal sent by a first terminal, page the second terminal further based on the identity information of the second terminal, trigger the second terminal to enter a connection state, and establish connection between the first terminal and the second terminal, so that communication between the terminals is realized based on the connection.

In a first aspect, a method for communication between terminals is provided, comprising: the method comprises the steps that a first terminal receives first information sent by a second terminal, wherein the first information comprises identity information of the second terminal; the first terminal sends the first information to first network equipment, wherein the first network equipment is network equipment of a cell where the first terminal resides; the first terminal receives a switching command sent by the first network device, wherein the switching command is used for indicating the first terminal to switch relay connection of the first terminal; and the first terminal establishes connection with the second terminal based on the switching command.

In a second aspect, there is provided a method for communication between terminals, comprising: the method comprises the steps that a second terminal sends first information to a first terminal, wherein the first information comprises identity information of the second terminal; the second terminal receives a paging message sent by a second network device, wherein the paging message is generated according to the first information, and the second network device is the network device of a residence cell of the second terminal; the second terminal establishes connection with the second network equipment according to the paging message; the second terminal establishes a connection with the first terminal; and the second terminal relays data between the second network equipment and the first terminal.

In a third aspect, a method for communication between terminals is provided, comprising: the method comprises the steps that second network equipment receives first information sent by first equipment, wherein the first information comprises identity information of a second terminal, and the first equipment is the first terminal or the first network equipment; the second network equipment pages the second terminal according to the first information; and under the condition that the second terminal enters a connection state, the second network equipment sends a switching command to the first equipment, wherein the switching command is used for indicating the first terminal to switch the relay connection of the first terminal.

In a fourth aspect, a method for communication between terminals is provided, including: the method comprises the steps that first network equipment receives first information sent by a first terminal, wherein the first information comprises identity information of a second terminal; the first network equipment sends the first information to second network equipment, wherein the second network equipment is network equipment of a cell where the second terminal resides; the first network equipment receives a switching command sent by the second network equipment, wherein the switching command is used for indicating the first terminal to switch relay connection of the first terminal; the first network device sends the handover command to the first terminal.

A fifth aspect provides a terminal device for performing the methods of the first to second aspects or implementations thereof. Specifically, the terminal device comprises means for performing the methods of the first to second aspects or implementations thereof described above.

A sixth aspect provides a network device for performing the methods of the third to fourth aspects or implementations thereof. In particular, the network device comprises means for performing the methods of the above third to fourth aspects or implementations thereof.

In a seventh aspect, there is provided a terminal device comprising: including 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 to the second aspect or each implementation manner thereof.

In an eighth aspect, there is provided a network device comprising: including 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 to the fourth aspect or each implementation manner thereof.

A ninth aspect provides a chip for implementing the method of any one of the first to fourth aspects or each implementation thereof. Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to fourth aspects or implementations thereof described above.

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

In an eleventh aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the above first to fourth aspects or implementations thereof.

In a twelfth 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 above-described first to fourth aspects or implementations thereof.

Based on the technical scheme, the second terminal can send the identity information of the second terminal to the first terminal, and the first terminal further transmits the identity information of the second terminal to the network equipment, so that the network equipment can page the second terminal based on the identity information of the second terminal, trigger the second terminal to enter a connection state, further establish connection between the first terminal and the second terminal, and realize communication between the terminals based on the connection.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a relay transmission according to an embodiment of the present application.

Fig. 3 is a schematic interaction diagram of a method for communication between terminals according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a relay discovery process according to an embodiment of the present application.

Fig. 5 is a schematic diagram of another relay discovery process according to an embodiment of the application.

Fig. 6 is a schematic interaction diagram of a method for communication between terminals according to another 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 network device provided according to an embodiment of the present application.

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

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

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

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

Fig. 13 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, advanced long term evolution (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

Optionally, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Embodiments of the present application describe various embodiments in connection with network devices and terminal devices, where a terminal device may also be referred to as a User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, and a network device (gNB) in an NR network, or a network device in a PLMN network for future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Exemplary, a communication system 100 to which embodiments of the present application apply 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 device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and alternatively, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system in an embodiment 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 device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "pre-definition" may be implemented by pre-storing a corresponding code, a table or other manners that may be used to indicate relevant information in a device (including, for example, a terminal device and a network device), which is not limited to a specific implementation manner. Such as predefined may refer to a definition in a protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

In some scenarios, communication of a remote (remote) UE may be implemented with a terminal device-to-relay network (UE-to-network relay). The remote UE may connect to the network device in a number of connection ways:

mode a: communication with network devices is achieved using a relay network (UE-to-network).

As shown in fig. 2, the remote UE may connect to the network device through one-hop or multi-hop relay UEs.

Specifically, the remote UE and the relay UE are connected and communicated through a PC5 interface, and the last hop relay UE (i.e., the relay UE directly connected to the network device) and the network device are connected and communicated through a Uu interface, so that the remote UE is connected to a network, for example, a core evolution (Evolved Packet Core, EPC) or a 5G core network (5G Core Network,5GC).

If the multi-hop relay UE exists, the relay UE is connected and communicated through a PC5 interface.

Mode B: the remote UE is directly connected to the network device.

For example, the remote UE may implement connection and communication with a network device through a Uu interface.

The relay terminal may be, for example, a layer 2 relay or a layer 3 relay.

For layer 2 relay, it supports functions of some or all layers between a network protocol (Internet Protocol, IP) layer and a physical layer, for example, may support one or more functions of a medium access control (Media Access Control, MAC) layer, a radio link control (Radio Link Control, RLC) layer, a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer.

Layer 3 relay may support the functionality of the IP layer and optionally also the functionality of the upper layers of the IP layer. When the remote terminal accesses the network through the layer 3 relay, the layer 3 relay can bear the function of the IP layer relay, data is transferred between the remote terminal and the network, and the remote terminal and the relay terminal are connected through a side uplink.

In some scenarios, where the remote UE is connected to the network via the Uu interface, a relay UE may be required to connect to the network due to the mobility of the remote UE, transferring data between the remote UE and the network, and in other scenarios, where the remote UE is connected to the network via a relay UE, a new relay UE may be required to connect to the network due to the mobility of the remote UE, transferring data between the remote UE and the network. If the remote UE is in a connected state, the relay UE is in a disconnected state, such as an idle state or a deactivated state, in which case, how to implement the communication between the terminals is an urgent problem to be solved.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

In the embodiment of the application, the network device of the cell where the first terminal resides is denoted as a first network device, and the network device of the cell where the second terminal resides is denoted as a second network device.

In some embodiments of the present application, the first terminal is in a connected state, and the second terminal is in a non-connected state, for example, an IDLE (rrc_idle) state or a deactivated (rrc_inactive) state.

Fig. 3 is a schematic interaction diagram of a method 300 for communication between terminals according to an embodiment of the present application.

In the embodiment shown in fig. 3, the cells in which the first and second terminals reside are the same. The first network device and the second network device are the same network device, i.e. the first network device is the network device of the cell where the first terminal and the second terminal reside.

As shown in fig. 3, the method 300 may include at least some of the following:

s301, a second terminal sends first information to a first terminal, wherein the first information comprises identity information of the second terminal.

In some embodiments, the first terminal is a remote terminal and the second terminal is a relay terminal. The second terminal may be configured to communicate data between the first network device and the first terminal.

In some embodiments, the first information further comprises discontinuous reception (Discontinuous Reception, DRX) configuration information of the second terminal.

In some embodiments, the DRX configuration information may include a DRX configuration for determining Paging resources, such as Paging Frames (PFs) or Paging Occasions (POs). For example, the DRX cycle, the number of PFs included in one DRX cycle, the number of POs included in one PF, the time domain offset of the PF, etc.

Optionally, in the embodiment of the present application, the terminal device and the network device may be connected through a first interface, and the terminal device may be connected through a second interface, that is, the first interface is a communication interface between the terminal device and the network device, and the second interface is a communication interface between the terminal devices.

In some embodiments, the first interface may be a Uu interface, in which case, the connection between the terminal device and the network device may be referred to as a Uu connection, and in other alternative embodiments, the first interface may also be another interface used for communication between the terminal device and the network device, where the embodiments of the application are not limited thereto.

In some embodiments, the second interface may be a PC5 interface, in which case the connection between the terminal devices may be referred to as a PC5 connection, and in other alternative embodiments, the second interface may also be another interface for communication between the terminal devices, where the embodiments of the application are not limited thereto.

Hereinafter, the first interface is exemplified as Uu interface, and the second interface is exemplified as PC5 interface, but the present application is not limited thereto.

Optionally, in some embodiments, the identity information of the second terminal includes a first interface identifier of the second terminal and/or a second interface identifier of the second terminal, where the first interface identifier is used to identify an interface between the second terminal and the network device, and the second interface identifier is used to identify an interface between the terminal devices.

In some embodiments, the first interface identification includes at least one of: a 5G temporary mobile subscriber identity (Temporary Mobile Subscriber Identity, 5G-S-TMSI) and/or a deactivated radio network temporary identity (I-RNTI).

In other embodiments, the first interface identification includes at least one of: the first interface identification includes at least one of: the first value is determined according to the 5G-S-TMSI of the second terminal, and the second value is determined according to the I-RNTI of the second terminal.

That is, the first interface identifier may be a 5G-S-TMSI or an I-RNTI, or may be a value obtained by processing the 5G-S-TMSI or the I-RNTI, for example, the first value may be a 5G-S-TMSI mod 1024, or an I-RNTI mod 1024, where mod represents modulo.

Optionally, in some embodiments, the second interface identification includes at least one of: and the source address of the second terminal and the high-level identification of the second terminal.

As an example, the source address of the second terminal may be a medium access control (Media Access Control, MAC) address, or Layer2 (Layer 2) source address.

As an example, the higher-layer identifier of the second terminal may include an application identifier of the user to which the second terminal corresponds, such as a QQ number, a nickname, and the like.

Alternatively, in some embodiments, when the first connection is a Uu connection and the second connection is a PC5 connection, the first interface identifier may be referred to as a Uu interface identifier, and the second interface identifier may be referred to as a PC5 interface identifier.

It should be understood that the specific implementation of the first interface identifier and the second interface identifier are merely examples, and in other embodiments, the first interface identifier and the second interface identifier may also include other identifiers, which is not limited to this application.

In some embodiments of the present application, the second terminal and the first terminal may send the first information through an inter-device discovery procedure. For example, the first terminal receives a first message sent by the second terminal, where the first message includes the first information, and the first message is used for discovery between devices.

The terminal device needs to perform a discovery procedure before establishing a connection, and in some scenarios, the discovery procedure may use mode a (Model a) or mode B (Model B). Fig. 4 and 5 show an example of a discovery procedure of the pattern a and the pattern B, respectively.

As shown in fig. 4, UE1 (which may be a Relay UE) may send a notification message (Announcement message), or may be called a discovery notification message, notifying other UEs, and a UE that receives the discovery notification message may establish a connection with UE1 when a Relay service is required, and Relay data through UE 1.

As shown in fig. 5, UE1 wants to find a Relay UE, it may send a recall message (Solicitation message), or a discovery recall message, informing other UEs that the UE receiving Solicitation message may reply to the UE1 with a discovery Response message (Response message) informing UE1 that it may perform Relay service when Relay service can be performed.

Alternatively, in some embodiments, the first message may be a discovery notification message, or a discovery response message.

In other embodiments of the present application, the second terminal and the first terminal may send the first information through an inter-device communication procedure.

As an embodiment, the first terminal receives first information sent by the second terminal through a first channel, where the first channel is used for communication between terminal devices.

By way of example and not limitation, the first channel may be a physical sidelink control channel (Physical Sidelink Control Channel, PSCCH), or a physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH).

As another embodiment, the first terminal receives first information sent by the second terminal through a first bearer, where the first bearer is used for communication between terminal devices.

Optionally, the first bearer is a data radio bearer (Data Radio Bearer, DRB).

In this embodiment of the present application, after the first terminal receives the first information sent by the second terminal, in S302, the first terminal further sends the first information to the first network device.

It should be understood that the first terminal may send the first information through any uplink signaling or uplink message or uplink channel, which is not limited in this application. The physical uplink control channel (Physical Uplink Control Channel, PUCCH) is transmitted, for example, by an uplink radio resource control (Radio Resource Control, RRC) message, a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).

As a specific example, the first terminal sends a second message to the first network device, where the second message includes the first information, and the second message is used to report a measurement result of the cell.

That is, the first terminal may send the first information to the first network device in a measurement reporting process.

Optionally, in some embodiments, the first terminal may further report channel quality information of the second terminal to the first network device.

Optionally, in some embodiments, if the first network device receives channel quality information of a plurality of terminal devices, the first network device may select a target terminal device according to the channel quality information of the plurality of terminal devices, and further page the target terminal device, for example, the target terminal device may be a terminal device with optimal channel quality.

Alternatively, the channel quality information of the second terminal may be, for example, reference signal received power (Reference Signal Receiving Power, RSRP), reference signal received quality (Reference Signal Receiving Quality, RSRQ), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR).

After the first network device receives the first information, in S303, a paging message is further sent to the second terminal according to the first information.

In some embodiments, the second network device determines a paging resource, such as PF or PO, for paging the second terminal according to the identity information of the second terminal and the DRX configuration information of the second terminal.

In other embodiments, the second network device generates a paging message according to the identity information of the second terminal, and sends the paging message to the second terminal on the paging resource.

Correspondingly, the second terminal device receives the paging message on the paging resource.

In the present embodiment, the POs is made up of a series of physical downlink control channel (Physical Downlink Control Channel, PDCCH) listening occasions, where each PDCCH listening occasion may include one or more slots. The PF may refer to a radio frame, e.g., fixed 10ms, and the PF may contain one or more POs, or a start location of one or more POs.

During one DRX cycle, the second terminal may monitor the PDCCH on the PO on the PF to receive paging messages. The PF and PO, which the second terminal listens to the PDCCH in one DRX cycle, may be determined, for example, according to the following.

For example, the system frame number (System Frame Number, SFN) number of the PF is determined by the following formula:

(SFN+PF_offset)mod T＝(T/N)*(UE_ID mod N)

the number Index (i_s) where the PO is located in one PF is determined by the following equation:

i_s＝floor(UE_ID/N)mod Ns。

wherein T represents a DRX cycle;

n represents the PF number contained in one DRX cycle;

ns represents the number of POs contained in one PF;

pf_offset represents a time domain offset used to determine the PF;

the UE_ID may be, for example, 5G-S-TMSI mod 1024.

Optionally, in some embodiments, the paging message may include indication information, where the indication information is used to indicate that the paging message is used to page the relay terminal, or the indication information is used to indicate that the current paging is used for relay transmission.

Further, S304, the second terminal enters a connected state after receiving the paging message.

As an example, if the second terminal is in rrc_idle state, the rrc_connected state may be entered by establishing an RRC connection.

As another example, if the second terminal is in the rrc_inactive state, the rrc_connected state may be entered through a Resume (Resume) RRC connection.

Further, in S305, the first network device sends a handover command to the first terminal.

The switching command is used to instruct the first terminal to switch a relay connection (or a PC connection) of the second terminal, in other words, the switching command is used to instruct the first terminal to switch a transmission path of the first terminal to a network device. The handover here may include: switching from a direct connection between the first terminal and the network device (i.e. not through the relay terminal) to connecting the first terminal and the network device through the relay terminal; the first terminal is connected to the network device through one relay terminal, and is switched to be connected to the network device through the other relay terminal.

In S306, the first terminal establishes a connection with the second terminal based on the handover command.

For example, the first terminal may establish a PC5 connection with the second terminal.

Further alternatively, the second terminal relays data between the first network device and the first terminal through the PC5 connection.

Optionally, in some embodiments, the handover command may include identity information of a target terminal device, where the target terminal device may be a terminal device with optimal channel quality determined according to channel quality information of a plurality of terminal devices reported by the first terminal, and the identity information of the target terminal device is sent to the first terminal through the handover command, so that the first terminal may establish connection with the target terminal device according to the handover command, which is beneficial to ensuring reliability of data transmission between the first terminal and the network device.

Fig. 6 is a schematic interaction diagram of a method 400 for communication between terminals according to an embodiment of the present application.

In the embodiment of fig. 6, the cells in which the first and second terminals reside are different. I.e. the first network device and the second network device are different network devices.

Optionally, in some embodiments, the first terminal is a remote terminal and the second terminal is a relay terminal.

As shown in fig. 6, the method 400 may include at least some of the following:

s401, a second terminal sends first information to a first terminal, wherein the first information comprises identity information of the second terminal.

And S402, the second terminal sends the first information to the first network equipment.

It should be understood that S401 and S402 correspond to S301 and S302 in the embodiment shown in fig. 3, respectively, and the detailed description of the foregoing embodiment is referred to, which is not repeated herein for brevity.

Further, in S403, the first network device sends the first information to the second network device, so that the second network device pages the second terminal according to the first information.

In S404, the second network device sends a paging message to the second terminal according to the first information.

In S405, the second terminal receives the paging message and enters a connected state.

The S404 and S405 correspond to S303 and S304 in the embodiment shown in fig. 3, respectively, and the detailed description referring to the foregoing embodiment is omitted herein for brevity.

Further, in S406, the second network device sends a handover command to the first network device.

In S407, the first network device forwards the handover command to the first terminal.

Alternatively, in some embodiments, the handover command may be sent via an inter-node (RRC) message.

Further, in S408, the first terminal establishes a connection with the second terminal based on the handover command. Specific implementation refers to the related implementation in S306 described in fig. 3, and for brevity, a detailed description is omitted here.

Therefore, in the embodiment of the application, the second terminal to be paged can send the identity information of the second terminal to the first terminal which wants to establish connection with the second terminal, and the first terminal further transmits the identity information of the second terminal to the network device, so that the network device can page the second terminal based on the identity information of the second terminal, trigger the second terminal to enter a connection state, thereby establishing connection between the first terminal and the second terminal, and further realize communication between the terminals based on the connection.

The method embodiments of the present application are described in detail above with reference to fig. 3 to 6, and the apparatus embodiments of the present application are described in detail below with reference to fig. 7 to 13, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 7 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in fig. 7, the terminal device 500 includes:

a communication unit 510, configured to receive first information sent by a second terminal, send the first information to a first network device, and receive a handover command sent by the first network device, where the first information includes identity information of the second terminal, the first network device is a network device in which the terminal device resides in a cell, and the handover command is used to instruct the terminal device to handover a relay connection of the terminal device;

and a processing unit 520, configured to establish a connection with the second terminal based on the handover command.

Optionally, in some embodiments, the first information further includes non-connected reception DRX configuration information of the second terminal.

Optionally, in some embodiments, the first interface identification includes at least one of: the 5G temporary mobile subscriber identity 5G-S-TMSI and/or the deactivation radio network temporary identity I-RNTI.

Optionally, in some embodiments, the first interface identification includes at least one of: the first value is determined according to the 5G-S-TMSI of the second terminal, and the second value is determined according to the I-RNTI of the second terminal;

Optionally, in some embodiments, the communication unit 510 is further configured to: and receiving first information sent by the second terminal through a first message, wherein the first message is used for discovering equipment.

Optionally, in some embodiments, the communication unit 510 is further configured to: and receiving first information sent by the second terminal through a first channel, wherein the first channel is used for communication between terminal devices.

Optionally, in some embodiments, the communication unit 510 is further configured to: and receiving first information sent by the second terminal through a first bearer, wherein the first bearer is used for communication between terminal devices.

Optionally, in some embodiments, the communication unit 510 is further configured to: and sending a second message to the first network equipment, wherein the second message comprises the first information, and the second message is used for reporting the measurement result of the cell.

Optionally, in some embodiments, the second message further includes channel quality information of the second terminal.

Optionally, in some embodiments, the handover command is forwarded to the first network device by a second network device, the second network device being a network device of a cell in which the second terminal resides.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the first terminal in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing the corresponding flow of the first terminal in the embodiment of the method shown in fig. 3 to 6, which are not repeated herein for brevity.

Fig. 8 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 600 of fig. 8 includes:

the communication unit 610 is configured to receive first information sent by a first device, where the first information includes identity information of a second terminal, page the second terminal according to the first information, and send a handover command to the first device when the second terminal enters a connected state, where the first device is a first terminal or a first network device, the first network device is a network device of a cell where the first terminal resides, the network device is a network device of a cell where the second terminal resides, and the handover command is used to instruct the first terminal to handover a relay connection of the first terminal.

optionally, in some embodiments, the second interface identification includes at least one of:

and the source address of the second terminal and the application layer identification of the second terminal.

Optionally, in some embodiments, the network device further comprises:

and the processing unit is used for determining paging resources for paging the second terminal according to the identity information of the second terminal and the DRX configuration information of the second terminal.

Optionally, in some embodiments, the network device further comprises:

the processing unit is used for generating a paging message according to the identity information of the second terminal;

the communication unit 610 is further configured to send the paging message to the second terminal on the paging resource.

Optionally, in some embodiments, the paging message includes indication information, where the indication information is used to indicate that the paging message is used to page a relay terminal.

Optionally, in some embodiments, the first device is the first terminal, and the communication unit 610 is further configured to:

and receiving a second message sent by the first terminal, wherein the second message comprises the first information, and the second message is used for reporting a measurement result of the cell.

Optionally, in some embodiments, the first device is the first network device, and the communication unit 610 is further configured to: and receiving the first information sent by the first network equipment through the inter-node Radio Resource Control (RRC) message.

Optionally, in some embodiments, the handover command is sent by an inter-node RRC message.

It should be understood that the network device 600 according to the embodiment of the present application may correspond to the second network device in the method embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 600 are respectively for implementing the corresponding flow of the second network device in the method embodiment shown in fig. 3 to 6, which are not described herein for brevity.

Fig. 9 shows a schematic block diagram of a terminal device 700 according to an embodiment of the present application. As shown in fig. 9, the terminal device 700 includes:

a communication unit 710, configured to send first information to a first terminal, where the first information includes identity information of the terminal device; receiving a paging message sent by a second network device, wherein the paging message is generated according to the first information, and the second network device is the network device of the cell where the terminal device resides;

a processing unit 720, configured to establish a connection with the second network device and establish a connection with the first terminal according to the paging message;

the communication unit 710 is further configured to: and relaying data between the second network device and the first terminal.

Optionally, in some embodiments, the first information further includes non-connected reception DRX configuration information of the terminal device.

Optionally, in some embodiments, the identity information of the terminal device includes a first interface identifier of the terminal device and/or a second interface identifier of the terminal device, where the first interface identifier is used to identify an interface between the terminal device and the network device, and the second interface identifier is used to identify an interface between the terminal devices.

Optionally, in some embodiments, the first interface identification includes at least one of: the terminal equipment comprises a first value and a second value, wherein the first value is determined according to the 5G-S-TMSI of the terminal equipment, and the second value is determined according to the I-RNTI of the terminal equipment;

the source address of the terminal equipment and the application layer identifier of the terminal equipment.

Optionally, in some embodiments, the communication unit 710 is specifically configured to: and sending first information to the first terminal through a first message, wherein the first message is used for discovering between devices.

Optionally, in some embodiments, the communication unit 710 is specifically configured to: and transmitting first information to the first terminal through a first channel, wherein the first channel is used for communication between terminal devices.

Optionally, in some embodiments, the communication unit 710 is specifically configured to: and sending first information to the first terminal through a first bearer, wherein the first bearer is used for communication between terminal devices.

It should be understood that the terminal device 700 according to the embodiment of the present application may correspond to the second terminal in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 700 are respectively for implementing the corresponding flow of the second terminal in the embodiment of the method shown in fig. 3 to 6, which are not repeated herein for brevity.

Fig. 10 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 800 of fig. 10 includes:

the communication unit 810 is configured to receive first information sent by a first terminal, where the first information includes identity information of a second terminal, send the first information to a second network device, where the second network device is a network device of a cell where the second terminal resides, receive a handover command sent by the second network device, where the handover command is used to instruct the first terminal to handover a relay connection of the first terminal, and send the handover command to the first terminal.

Optionally, in some embodiments, the communication unit 810 is specifically configured to: and receiving a second message sent by the first terminal, wherein the second message comprises the first information, and the second message is used for reporting a measurement result of the cell.

Optionally, in some embodiments, the handover command is sent via an inter-node radio resource control, RRC, message.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the network device 800 according to the embodiment of the present application may correspond to the first network device in the method embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 800 are respectively for implementing the corresponding flow of the first network device in the method embodiment shown in fig. 3 to 6, which are not described herein for brevity.

Fig. 11 is a schematic structural diagram of a communication device 900 provided in an embodiment of the present application. The communication device 900 shown in fig. 11 comprises a processor 910, from which the processor 910 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 11, the communication device 900 may also include a memory 920. Wherein the processor 910 may invoke and run a computer program from the memory 920 to implement the methods in the embodiments of the present application.

Wherein 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. 11, 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 in particular, may send information or data to other devices, or receive information or data sent by other devices.

Wherein transceiver 930 may include a transmitter and a receiver. Transceiver 930 may further include antennas, the number of which may be one or more.

Optionally, the communication device 900 may be specifically a first network device or a second network device in the embodiments of the present application, and the communication device 900 may implement a corresponding flow implemented by the first network device or the second network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the communication device 900 may be specifically a first terminal or a second terminal in the embodiments of the present application, and the communication device 900 may implement a corresponding flow implemented by the first terminal or the second terminal in each method in the embodiments of the present application, which is not described herein for brevity.

Fig. 12 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1000 shown in fig. 12 includes a processor 1010, and the processor 1010 may call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 12, the chip 1000 may further include a memory 1020. Wherein the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in embodiments 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 chip 1000 may also include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. Wherein the processor 1010 may control the output interface 1040 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to the first network device or the second network device in the embodiments of the present application, and the chip may implement a corresponding flow implemented by the first network device or the second network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to the first terminal or the second terminal in the embodiments of the present application, and the chip may implement a corresponding flow implemented by the first terminal or the second terminal in each method in the embodiments of the present application, which is not described herein for brevity.

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

Fig. 13 is a schematic block diagram of a communication system 1100 provided by an embodiment of the present application. As shown in fig. 13, the communication system 900 includes a terminal device 1110 and a network device 1120.

The terminal device 1110 may be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1120 may be used to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment 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 implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks 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 a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct 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 memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to the first terminal or the second terminal in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the first terminal or the second terminal in each method of the embodiments of the present application, which is not described herein 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 network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to the first terminal or the second terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal or the second terminal in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to the first terminal or the second terminal in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding procedure implemented by the first terminal or the second terminal in each method in the embodiments of the present application, which is not described herein 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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely 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 think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to 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 communication between terminals, comprising:

the method comprises the steps that a first terminal receives first information sent by a second terminal, wherein the first information comprises identity information of the second terminal;

the first terminal sends the first information to first network equipment, wherein the first network equipment is network equipment of a cell where the first terminal resides;

the first terminal receives a switching command sent by the first network device, wherein the switching command is used for indicating the first terminal to switch relay connection of the first terminal;

and the first terminal establishes connection with the second terminal based on the switching command.
The method of claim 1, wherein the first information further comprises non-connected reception DRX configuration information for the second terminal.
Method according to claim 2, characterized in that the identity information of the second terminal comprises a first interface identification of the second terminal for identifying an interface between the second terminal and the network device and/or a second interface identification of the second terminal for identifying an interface between the terminal devices.
A method according to claim 3, wherein the first interface identification comprises at least one of: the 5G temporary mobile subscriber identity 5G-S-TMSI and/or the deactivation radio network temporary identity I-RNTI.
A method according to claim 3, wherein the first interface identification comprises at least one of: the first value is determined according to the 5G-S-TMSI of the second terminal, and the second value is determined according to the I-RNTI of the second terminal;
the method of any of claims 3-5, wherein the second interface identification comprises at least one of: and the source address of the second terminal and the high-level identification of the second terminal.
The method according to any of claims 1-6, wherein the first terminal receiving the first information sent by the second terminal comprises:

The first terminal receives first information sent by the second terminal through a first message, wherein the first message is used for discovering between devices.
The method according to any of claims 1-6, wherein the first terminal receiving the first information sent by the second terminal comprises:

the first terminal receives first information sent by the second terminal through a first channel, and the first channel is used for communication between terminal devices.
The method according to any of claims 1-6, wherein the first terminal receiving the first information sent by the second terminal comprises:

the first terminal receives first information sent by the second terminal through a first bearer, and the first bearer is used for communication between terminal devices.
The method according to any of claims 1-9, wherein the first terminal sending the first information to a first network device comprises:

the first terminal sends a second message to the first network device, wherein the second message comprises the first information, and the second message is used for reporting a measurement result of a cell.
The method of claim 10, wherein the second message further comprises channel quality information for the second terminal.
The method according to any of claims 1-11, wherein the handover command is forwarded to the first network device by a second network device, the second network device being a network device of a cell in which the second terminal resides.
A method for communication between terminals, comprising:

the method comprises the steps that second network equipment receives first information sent by first equipment, wherein the first information comprises identity information of a second terminal, and the first equipment is the first terminal or the first network equipment;

the second network equipment pages the second terminal according to the first information;

and under the condition that the second terminal enters a connection state, the second network equipment sends a switching command to the first equipment, wherein the switching command is used for indicating the first terminal to switch the relay connection of the first terminal.
The method of claim 13, wherein the first information further comprises non-connected reception DRX configuration information for the second terminal.
The method according to claim 14, wherein the identity information of the second terminal comprises a first interface identification of the second terminal and/or a second interface identification of the second terminal, wherein the first interface identification is used for identifying an interface between the second terminal and the network device, and the second interface identification is used for identifying an interface between the terminal devices.
The method of claim 15, wherein the first interface identification comprises at least one of: the 5G temporary mobile subscriber identity 5G-S-TMSI and/or the deactivation radio network temporary identity I-RNTI.
The method of claim 16, wherein the first interface identification comprises at least one of: the first value is determined according to the 5G-S-TMSI of the second terminal, and the second value is determined according to the I-RNTI of the second terminal;
the method of any of claims 15-17, wherein the second interface identification comprises at least one of:

and the source address of the second terminal and the application layer identification of the second terminal.
The method according to any of claims 15-18, wherein the second network device paging the second terminal according to the first information, comprising:

and the second network equipment determines paging resources for paging the second terminal according to the identity information of the second terminal and the DRX configuration information of the second terminal.
The method of claim 19, wherein the second network device pages the second terminal based on the first information, further comprising:

The second network equipment generates a paging message according to the identity information of the second terminal;

and sending the paging message to the second terminal on the paging resource.
The method of claim 20, wherein the paging message includes indication information for indicating that the paging message is for paging a relay terminal.
The method according to any of claims 13-21, wherein the first device is the first terminal, and the second network device receives first information sent by the first device, including:

the second network device receives a second message sent by the first terminal, where the second message includes the first information, and the second message is used to report a measurement result of the cell.
The method of claim 22, wherein the second message further comprises channel quality information for the second terminal.
The method of any of claims 13-21, wherein the first device is the first network device and the second network device receives first information sent by the first device, comprising:

the second network device receives the first information sent by the first network device through an inter-node Radio Resource Control (RRC) message.
The method of claim 24, wherein the handover command is transmitted through an inter-node RRC message.
A method for communication between terminals, comprising:

the method comprises the steps that a second terminal sends first information to a first terminal, wherein the first information comprises identity information of the second terminal;

the second terminal receives a paging message sent by a second network device, wherein the paging message is generated according to the first information, and the second network device is the network device of a residence cell of the second terminal;

the second terminal establishes connection with the second network equipment according to the paging message;

the second terminal establishes a connection with the first terminal;

and the second terminal relays data between the second network equipment and the first terminal.
The method of claim 26, wherein the first information further comprises non-connected reception DRX configuration information for the second terminal.
The method according to claim 27, wherein the identity information of the second terminal comprises a first interface identification of the second terminal and/or a second interface identification of the second terminal, wherein the first interface identification is used for identifying an interface between the second terminal and the network device, and the second interface identification is used for identifying an interface between the terminal devices.
The method of claim 28, wherein the first interface identification comprises at least one of: the 5G temporary mobile subscriber identity 5G-S-TMSI and/or the deactivation radio network temporary identity I-RNTI.
The method of claim 28, wherein the first interface identification comprises at least one of: the first value is determined according to the 5G-S-TMSI of the second terminal, and the second value is determined according to the I-RNTI of the second terminal;
the method of any of claims 28-30, wherein the second interface identification comprises at least one of:

and the source address of the second terminal and the application layer identification of the second terminal.
The method according to any of claims 26-31, wherein the second terminal sending the first information to the first terminal comprises:

the second terminal sends first information to the first terminal through a first message, wherein the first message is used for discovery between devices.
The method according to any of claims 26-31, wherein the second terminal sending the first information to the first terminal comprises:

The second terminal transmits first information to the first terminal through a first channel, and the first channel is used for communication between terminal devices.
The method according to any of claims 26-31, wherein the second terminal sending the first information to the first terminal comprises:

the second terminal sends first information to the first terminal through a first bearer, wherein the first bearer is used for communication between terminal devices.
The method according to any of claims 26-34, wherein the paging message comprises indication information indicating that the paging message is for paging a relay terminal.
A method for communication between terminals, comprising:

the method comprises the steps that first network equipment receives first information sent by a first terminal, wherein the first information comprises identity information of a second terminal;

the first network equipment sends the first information to second network equipment, wherein the second network equipment is network equipment of a cell where the second terminal resides;

the first network equipment receives a switching command sent by the second network equipment, wherein the switching command is used for indicating the first terminal to switch relay connection of the first terminal;

The first network device sends the handover command to the first terminal.
The method of claim 36, wherein the first information further comprises non-connected reception DRX configuration information for the second terminal.
The method according to claim 37, wherein the identity information of the second terminal comprises a first interface identification of the second terminal and/or a second interface identification of the second terminal, wherein the first interface identification is used for identifying an interface between the second terminal and the network device, and the second interface identification is used for identifying an interface between the terminal devices.
The method of claim 38, wherein the first interface identification comprises at least one of: the 5G temporary mobile subscriber identity 5G-S-TMSI and/or the deactivation radio network temporary identity I-RNTI.
The method of claim 38, wherein the first interface identification comprises at least one of: the first value is determined according to the 5G-S-TMSI of the second terminal, and the second value is determined according to the I-RNTI of the second terminal;
the method of any one of claims 38-40, wherein the second interface identification comprises at least one of:

And the source address of the second terminal and the application layer identification of the second terminal.
The method according to any of claims 37-41, wherein the first network device receiving the first information sent by the first terminal comprises:

the first network device receives a second message sent by the first terminal, where the second message includes the first information, and the second message is used to report a measurement result of the cell.
The method of claim 42, wherein the second message further comprises channel quality information for the second terminal.
The method of any of claims 36-43, wherein the handover command is sent via an inter-node radio resource control, RRC, message.
A terminal device, comprising:

a communication unit, configured to receive first information sent by a second terminal, send the first information to a first network device, and receive a handover command sent by the first network device, where the first information includes identity information of the second terminal, the first network device is a network device of a cell where the terminal device resides, and the handover command is used to instruct the terminal device to handover relay connection of the terminal device;

And the processing unit is used for establishing connection with the second terminal based on the switching command.
A network device, comprising:

the communication unit is used for receiving first information sent by first equipment, the first information comprises identity information of a second terminal, paging the second terminal according to the first information, and sending a switching command to the first equipment under the condition that the second terminal enters a connection state, wherein the first equipment is the first terminal or first network equipment, the first network equipment is the network equipment of a residence cell of the first terminal, the network equipment is the network equipment of a residence cell of the second terminal, and the switching command is used for indicating the first terminal to switch relay connection of the first terminal.
A terminal device, comprising:

a communication unit, configured to send first information to a first terminal, where the first information includes identity information of the terminal device, and receive a paging message sent by a second network device, where the paging message is generated according to the first information, and the second network device is a network device where the terminal device resides in a cell;

A processing unit, configured to establish a connection with the second network device and establish a connection with the first terminal according to the paging message;

the communication unit is further configured to: and relaying data between the second network device and the first terminal.
A network device, comprising:

the communication unit is configured to receive first information sent by a first terminal, send the first information to a second network device, receive a handover command sent by the second network device, and send the handover command to the first terminal, where the first information includes identity information of the second terminal, the second network device is a network device in which the second terminal resides, and the handover command is used to instruct the first terminal to handover relay connection of the first terminal.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 12, or the method of any of claims 26 to 35.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 12 or the method of any one of claims 26 to 35.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 12 or the method of any one of claims 26 to 35.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 12 or the method of any one of claims 26 to 35.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 12 or the method according to any one of claims 26 to 35.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 13 to 25, or the method of any of claims 36 to 44.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 13 to 25 or the method of any one of claims 36 to 44.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 13 to 25 or the method of any one of claims 36 to 44.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 13 to 25 or the method of any one of claims 36 to 44.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 13 to 25 or the method of any one of claims 36 to 44.