WO2022205349A1

WO2022205349A1 - Wireless communication method, terminal device, and network device

Info

Publication number: WO2022205349A1
Application number: PCT/CN2021/085044
Authority: WO
Inventors: 张博源
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-10-06
Also published as: CN117242824A

Abstract

Embodiments of the present application provide a wireless communication method, a terminal device, and a network device. The method comprises: a remote terminal receives a discovery message sent by a relay terminal; according to the discovery message, the remote terminal determines relay types supported by the relay terminal; and according to a relay type selection rule, the remote terminal selects a relay type from among the relay types supported by the relay terminal. Thus, a relay type can be selected.

Description

Wireless communication method, terminal device and network device

technical field

The embodiments of the present application relate to the field of communication, and more particularly, to a wireless communication method, terminal device, and network device.

Background technique

End-to-end communication refers to end-to-end communication. For example, Vehicle to Vehicle (V2V), Vehicle to Everything (V2X), Device to Device (D2D), etc. If the distance between the sending end and the receiving end is too far, it is necessary to implement end-to-end communication between the sending end and the receiving end through a relay terminal, and both the sending end and the receiving end can be called remote terminals.

Currently, there are network relay solutions based on layer two (ie, access layer) and network relay solutions based on layer three (ie, application layer). If a relay terminal supports both the layer-2-based network relay scheme and the layer-3-based network relay scheme, the relay types supported by the relay terminal are the layer-2 relay type and the layer-3 relay type. Based on this, how the remote terminal selects the relay type is a technical problem to be solved urgently in the present application.

SUMMARY OF THE INVENTION

The present application provides a wireless communication method, terminal device and network device, so that the relay type can be selected.

A first aspect provides a wireless communication method, including: a remote terminal receives a discovery message sent by a relay terminal; the remote terminal determines a relay type supported by the relay terminal according to the discovery message; the remote terminal selects a rule according to the relay type Select the relay type from the relay types supported by the relay terminal.

In a second aspect, a wireless communication method is provided, including: a remote terminal monitors a discovery message sent by at least one relay terminal to obtain monitoring information, and sends the monitoring information to a network device; and/or, the remote terminal sends the monitoring information to the network device Send the information of the remote terminal, wherein the monitoring information and/or the information of the remote terminal is used to select the target relay terminal and the relay type of the target relay terminal; the remote terminal receives the indication message, and the indication message is used to indicate the selected relay terminal. Relay type.

In a third aspect, a wireless communication method is provided, including: a terminal device sending sidelink terminal information to a network device; wherein the sidelink terminal information includes: at least one relay type.

In a fourth aspect, a wireless communication method is provided, comprising: a network device receiving monitoring information and/or information of a remote terminal, where the monitoring information is information obtained by the remote terminal monitoring a discovery message sent by at least one relay terminal; The monitoring information and/or the information of the remote terminal selects the target relay terminal and the relay type of the target relay terminal; the network device sends an indication message to the remote terminal, where the indication message is used to indicate the selected relay type.

In a fifth aspect, a wireless communication method is provided, including: a network device receiving sidelink terminal information sent by a terminal device; wherein the sidelink terminal information includes: at least one relay type.

In a sixth aspect, a terminal device is provided for executing the methods in the above-mentioned first to third aspects or their respective implementations.

Specifically, the terminal device includes functional modules for executing the methods in the first aspect to the third aspect or the respective implementation manners thereof.

In a seventh aspect, a network device is provided for executing the methods in the foregoing fourth to fifth aspects or their respective implementations.

Specifically, the network device includes functional modules for executing the methods in the fourth aspect to the fifth aspect or the respective implementation manners thereof.

In an eighth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the methods in the first to third aspects or their respective implementations.

In a ninth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the methods in the fourth to fifth aspects or their respective implementations.

In a tenth aspect, an apparatus is provided for implementing the method in any one of the above-mentioned first aspect to the fifth aspect or each implementation manner thereof.

Specifically, the apparatus includes: a processor for invoking and running a computer program from a memory, so that a device installed with the apparatus executes the method in any one of the above-mentioned first to fifth aspects or their respective implementations .

In an eleventh aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to execute the method in any one of the above-mentioned first to fifth aspects or each of its implementations.

In a twelfth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions cause a computer to execute the method in any one of the above-mentioned first to fifth aspects or the implementations thereof.

A thirteenth aspect provides a computer program which, when run on a computer, causes the computer to perform the method in any one of the above-mentioned first to fifth aspects or the respective implementations thereof.

To sum up, in this application, the remote terminal can select the relay type according to the relay type selection rule or select the relay type by default, or the network device can select the relay type according to the monitoring information reported by the remote terminal and/or the The message selects the trunk type and indicates it to the remote terminal.

Description of drawings

FIG. 1 is an example of a system framework 100 provided by an embodiment of the present application;

FIG. 2 shows a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application;

FIG. 3 shows a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application;

FIG. 4 shows a schematic flowchart of a wireless communication method 400 according to an embodiment of the present application;

FIG. 5 shows a schematic block diagram of a remote terminal 500 according to an embodiment of the present application;

FIG. 6 shows a schematic block diagram of a remote terminal 600 according to an embodiment of the present application;

FIG. 7 shows a schematic block diagram of a terminal device 700 according to an embodiment of the present application;

FIG. 8 shows a schematic block diagram of a network device 800 according to an embodiment of the present application;

FIG. 9 shows a schematic block diagram of a network device 900 according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of an apparatus according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. FIG. 1 is an example of a system framework 100 provided by an embodiment of the present application.

As shown in FIG. 1 , the system framework 100 may include a first remote terminal 110, a first relay terminal 120, a second relay terminal 130, and a second remote terminal 140. The first remote terminal 110 may be The first relay terminal 120 and the second relay terminal 130 communicate with the second remote terminal 140, the first remote terminal 110, the first relay terminal 120, the Both the second relay terminal 130 and the second remote terminal 140 support the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP) New Radio (NR) PC5 interface protocol.

As an example, the first remote terminal 110 , the first relay terminal 120 , the second relay terminal 130 , and the second remote terminal 140 may have performed the process through the network when there is network coverage. certified terminal equipment. The first remote terminal 110 and the second remote terminal 140 may be terminal devices authenticated as being able to access the wireless network through a relay terminal, in other words, the first remote terminal 110 and the first remote terminal 140 Two remote terminals are authorized to act as remote user equipment (Remote UE). The first relay terminal 120 and the second relay terminal 130 may be terminal devices that are certified as being able to work as relay nodes. The first remote terminal 110, the first relay terminal 120, the second relay terminal 130, and the second remote terminal 140 may all be authorized to send and receive relay discovery-related message, the relay discovery-related message may include a discovery message and a discovery request message.

Wherein, the first remote terminal 110, the first relay terminal 120, the second relay terminal 130, and the second remote terminal 140 may be any device configured with a physical layer and a medium access control layer. A device or apparatus, a terminal device may also be called an access terminal. For example, User Equipment (UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless Communication-enabled handheld devices, computing devices or other linear processing devices connected to wireless modems, in-vehicle devices, wearable devices, etc. The embodiment of the present invention is described by taking a vehicle-mounted terminal as an example, but is not limited thereto.

As shown in FIG. 1 , the first remote terminal 110 and the second remote terminal 140 may support an end-to-end protocol stack, and the end-to-end protocol stack may include the Packet Data Convergence Protocol (Packet Data Convergence Protocol) of the 3GPP PC5 interface. Data Convergence Protocol (PDCP) layer and an upper protocol layer above the PDCP layer, the upper protocol layer may include a user plane protocol layer and a control plane protocol layer. Described user plane protocol layer includes but not limited to Service Data Adaptation Protocol (Service Data Adaptation Protocol, SDAP) layer and Internet Protocol (Internet Protocol, IP) layer, described control plane protocol layer includes but not limited to Radio Resource Control (Radio Resource Control (Radio Resource Control) Resource Control, RRC) layer and Non-Access Stratum (NAS).

As shown in FIG. 1 , the first remote terminal 110, the first relay terminal 120, the second relay terminal 130, and the second remote terminal 140 may support a point-to-point protocol stack, and the The point-to-point protocol stack may include the layer 2 (L2) and layer 1 (L1) protocol stacks of the 3GPP PC5 interface, the L1 and L2 protocol stacks including but not limited to the Radio Link Layer Control (Radio Link Control, RLC) layer, Media Access Control (Media Access Control, MAC) layer and physical (PHY) layer. In addition, a relay protocol layer may also be included between the PDCP protocol layer and the PC5 layer 1/2 protocol layer. The functions of the relay protocol layer can be used to transmit data packets and related control information between remote terminals through the relay terminal.

In the framework 100 , the first remote terminal (Remote UE) 110 can be connected to the second remote terminal 140 through the first relay terminal 120 and the second relay terminal 130 . Specifically, the first remote terminal 110 and the first relay terminal 120, the first relay terminal 120 and the second relay terminal 130, the second relay terminal and the Both the two remote terminals 140 can be connected or communicated through the PC5 interface of the 3GPP system. The end-to-end connection or communication between the first remote terminal 110 and the second remote terminal 140 may also be performed through the PC5 interface of the 3GPP system.

It should be understood that FIG. 1 is only an example of the present application, and should not be construed as a limitation of the present application.

For example, the system framework 100 may be a system framework in which any terminal passes through a relay terminal to another terminal. For example, the frame 100 may be a system frame from the vehicle-mounted terminal to the vehicle-mounted terminal through the relay terminal. For example, the remote vehicle goes to the remote vehicle via the relay vehicle, the remote vehicle goes to other devices via the relay device, the remote terminal goes to the remote terminal via the relay terminal, and so on.

For another example, in the system framework 100, the number of relay terminals is 2, but this application is not limited to that. For example, the present application can also be applied to a system framework for end-to-end communication through one or more relay terminals.

As mentioned above, if a relay terminal supports both the layer-2-based network relay scheme and the layer-3-based network relay scheme, the relay types supported by the relay terminal are layer-2 relay type and layer-3 relay type. Based on this, how the remote terminal selects the relay type is a technical problem to be solved urgently in the present application.

In order to solve this technical problem, in this application, the remote terminal may select the relay type according to the relay type selection rule, or the remote terminal may send monitoring information and/or remote monitoring information to the network device by monitoring the discovery message of the relay terminal. information of the end terminal, so that the network device selects the relay type according to the monitoring information and/or the information of the remote terminal.

The technical solution of the present application will be elaborated below:

FIG. 2 shows a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. The execution subject involved in the method includes: a remote terminal and a relay terminal, and the remote terminal may be the first remote terminal in FIG. 1 . terminal, correspondingly, the relay terminal may be the first relay terminal in FIG. 1 , or the remote terminal may be the second remote terminal in FIG. 1 , correspondingly, the relay terminal may be the relay terminal in FIG. 1 the second relay terminal. As shown in Figure 2, the method includes the following steps:

S210: The remote terminal receives the discovery message sent by the relay terminal.

S220: The remote terminal determines the relay type supported by the relay terminal according to the discovery message.

S230: The remote terminal selects a relay type from the relay types supported by the relay terminal according to the relay type selection rule.

It should be understood that the remote terminal can discover the relay terminal through a discovery message sent by the relay terminal, so as to implement end-to-end unicast transmission through the relay terminal.

Optionally, the discovery message includes: the relay type supported by the relay terminal.

Optionally, the relay types supported by the relay terminal include: layer 2 relay type and layer 3 relay type, but are not limited thereto.

Optionally, the relay type selection rule includes at least one of the following associations with the relay type, but is not limited to this:

(1) The relationship between the channel busy ratio (Channel Busy Rate, CBR) threshold of the resource pool of the remote terminal and the size of the current CRB.

(2) The magnitude relationship between the CBR measurement value and the CBR threshold value corresponding to each relay type of the relay terminal respectively.

(3) The relationship between the reference signal receiving power (Reference Signal Receiving Power, RSRP) threshold of the sidelink (Sidelink, SL) between the remote terminal and the relay terminal and the current RSRP of the sidelink.

(4) The relationship between the RSRP threshold of the first Uu interface and the current RSRP of the first Uu interface between the remote terminal and the network device.

(5) The size relationship between the RSRP threshold of the second Uu interface and the current RSRP of the second Uu interface between the relay terminal and the network device.

(6) The magnitude relationship between the distance threshold and the current distance between the remote terminal and the relay terminal.

(7) The relationship between the quality of service (Quality of Service, QoS) threshold and the QoS of the current service of the remote terminal.

(8) The relationship between the QoS Flow Identity (Qos Flow Identity, QFI) threshold and the QFI of the current service of the remote terminal.

(9) The relationship between the service priority threshold and the service priority of the current service of the remote terminal.

(10) Resource allocation mode of the relay terminal.

(11) List of cell identities.

(12) Destination ID list.

For item (1):

Optionally, the CBR threshold is configured by the network device for the remote terminal. The current CRB refers to the current CBR measurement value of the resource pool of the remote terminal.

Optionally, if the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, it corresponds to the Layer 2 relay type. Based on this, the remote terminal selects the Layer 2 relay type, if the current CRB is greater than or equal to the second CRB threshold. If the first CRB threshold is smaller than the second CRB threshold, it corresponds to the layer 3 relay type. Based on this, the remote terminal selects the layer 3 relay type. Or, if the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, the layer 3 relay type is corresponding. Based on this, the remote terminal selects the layer 3 relay type. If the current CRB is greater than or equal to the first CRB threshold If the CRB threshold is smaller than the second CRB threshold, it corresponds to the layer 2 relay type. Based on this, the remote terminal selects the layer 2 relay type. Wherein, the first CRB threshold is smaller than the second CRB threshold.

It should be noted that two CRB thresholds, that is, the first CRB threshold and the second CRB threshold, are configured by the network device for the remote terminal. In fact, the network device can configure other numbers for the remote terminal. Based on this, the CRB threshold can divide the entire CRB range into multiple CRB intervals, and each CRB interval corresponds to a relay type.

For item (2):

Optionally, the CBR threshold is configured by the network device for the remote terminal.

Optionally, different relay types can be associated with different resource pool configurations. For any relay type among different relay types of the relay terminal, if the CRB measurement value of the resource pool corresponding to the relay type is less than or equal to the CRB threshold value of the resource pool corresponding to the relay type, the corresponding relay Type, based on this, the remote terminal selects the relay type. Or, for any relay type among different relay types of the relay terminal, if the CRB measurement value of the resource pool corresponding to the relay type is greater than the CRB threshold of the resource pool corresponding to the relay type, then the corresponding relay type , based on this, the remote terminal selects the relay type. For example, if the CRB measurement value of the resource pool corresponding to the layer 2 relay type is less than or equal to the CRB threshold of the resource pool, the remote terminal selects the layer 2 relay type, otherwise, the layer 2 relay type is not selected. If the CRB measurement value of the resource pool corresponding to the Layer 3 relay type is less than or equal to the CRB threshold of the resource pool, the remote terminal selects the Layer 3 relay type, otherwise, the Layer 3 relay type is not selected.

It should be noted that if the remote terminal determines to select the layer 2 relay type and the layer 3 relay type according to item (2), then the remote terminal can select a relay type between the two relay types in combination with other implementations. , this application does not limit other implementations.

For item (3):

Optionally, the RSRP threshold of the side link between the remote terminal and the relay terminal is configured by the network device for the remote terminal.

Optionally, if the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or is greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, correspondingly, the remote terminal selects the layer 2 relay type. , if the current RSRP of the side link is greater than the first RSRP threshold and less than the second RSRP threshold, the layer 3 relay type is corresponding, and accordingly, the remote terminal selects the layer 3 relay type. Or, if the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding Layer 3 relay type, correspondingly, the remote terminal selects the Layer 3 relay type, if If the current RSRP of the sidelink is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the layer 2 relay type, and correspondingly, the remote terminal selects the layer 2 relay type. Wherein, the first RSRP threshold is smaller than the second RSRP threshold.

It should be noted that two RSRP thresholds, that is, the first RSRP threshold and the second RSRP threshold, are exemplified here by the network device configured for the remote terminal. In fact, the network device can configure other numbers for the remote terminal. Based on this, the RSRP threshold can divide the entire RSRP range into multiple RSRP intervals, and each RSRP interval corresponds to a relay type.

For item (4):

Optionally, the RSRP threshold of the first Uu interface between the remote terminal and the network device is configured by the network device for the remote terminal.

Optionally, if the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the layer 2 relay type. Correspondingly, the remote terminal selects the layer 2 relay type. , if the current RSRP of the first Uu interface is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the Layer 3 relay type, and correspondingly, the remote terminal selects the Layer 3 relay type. Or, if the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, then the corresponding Layer 3 relay type, correspondingly, the remote terminal selects the Layer 3 relay type, if If the current RSRP of the first Uu interface is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the layer 2 relay type, and correspondingly, the remote terminal selects the layer 2 relay type. Wherein, the first RSRP threshold is smaller than the second RSRP threshold.

For item (5):

Optionally, the RSRP threshold of the second Uu interface between the relay terminal and the network device is configured by the network device for the relay terminal.

Optionally, if the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, correspondingly, the remote terminal selects the layer 2 relay type. , if the current RSRP of the second Uu interface is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the Layer 3 relay type, and correspondingly, the remote terminal selects the Layer 3 relay type. Or, if the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, then the corresponding Layer 3 relay type, correspondingly, the remote terminal selects the Layer 3 relay type, if The current RSRP of the second Uu interface is greater than the first RSRP threshold and less than the second RSRP threshold, and corresponds to the layer 2 relay type. Correspondingly, the remote terminal selects the layer 2 relay type. Wherein, the first RSRP threshold is smaller than the second RSRP threshold.

For item (6):

Optionally, the distance threshold may be configured by the network device for the remote terminal.

When the remote terminal selects the relay type, the current distance between the remote terminal and the relay terminal can be judged by using the zone (zone) identification (Identity, ID) information carried in the relay terminal SCI.

Optionally, if the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, the layer 2 relay type corresponds to, and accordingly, the remote terminal selects Layer 2 relay type. If the current distance between the remote terminal and the relay terminal is greater than the first distance threshold and less than the second distance threshold, it corresponds to the Layer 3 relay type. Correspondingly, the remote terminal selects the Layer 3 relay. type. Or, if the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or is greater than or equal to the second distance threshold, the layer 3 relay type corresponds to, and accordingly, the remote terminal selects layer 3 Relay type, if the current distance between the remote terminal and the relay terminal is greater than the first distance threshold and less than the second distance threshold, it corresponds to the layer 2 relay type. Correspondingly, the remote terminal selects the layer 2 relay type. Wherein, the first distance threshold is smaller than the second distance threshold.

It should be noted that here, two distance thresholds, namely, the first distance threshold and the second distance threshold, are configured by the network device for the remote terminal. In fact, the network device can configure other numbers for the remote terminal. The distance threshold of , based on this, the distance threshold can divide the entire distance range into multiple distance intervals, and each distance interval corresponds to a relay type.

For item (7):

Optionally, the QoS threshold is configured by the network device for the relay terminal.

Optionally, if the QoS of the current service is less than or equal to the QoS threshold, it corresponds to the Layer 2 relay type. Correspondingly, the remote terminal selects the Layer 2 relay type. If the QoS of the current service is greater than the QoS threshold, it corresponds to the Layer 3 relay type. Relay type, correspondingly, the remote terminal selects the Layer 3 relay type. Or, if the QoS of the current service is less than or equal to the QoS threshold, it corresponds to the Layer 3 relay type. Correspondingly, the remote terminal selects the Layer 3 relay type. If the QoS of the current service is greater than the QoS threshold, it corresponds to the Layer 2 relay type. , correspondingly, the remote terminal selects the Layer 2 relay type.

It should be noted that the network device is configured with a QoS threshold as an example for the relay terminal. In fact, the network device can configure other QoS thresholds for the relay terminal. Based on this, the QoS threshold can The QoS range is divided into multiple QoS intervals, and each QoS interval corresponds to a relay type.

For item (8):

Optionally, the QFI threshold is configured by the network device for the relay terminal.

Optionally, if the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 2 relay type. Correspondingly, the remote terminal selects the layer 2 relay type. If the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 3 relay type. Relay type, correspondingly, the remote terminal selects the Layer 3 relay type. Or, if the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the Layer 3 relay type. Correspondingly, the remote terminal selects the Layer 3 relay type. If the QFI of the current service is greater than the QFI threshold, it corresponds to the Layer 2 relay type. , correspondingly, the remote terminal selects the Layer 2 relay type.

It should be noted that the network device is used as an example to configure a QFI threshold for the relay terminal. In fact, the network device can configure other QFI thresholds for the relay terminal. Based on this, the QFI threshold can The QFI range is divided into multiple QFI sections, and each QFI section corresponds to a relay type.

For item (9):

Optionally, the service priority threshold is configured by the network device for the relay terminal.

Optionally, if the service priority of the current service is less than or equal to the service priority threshold, the corresponding layer 2 relay type, correspondingly, the remote terminal selects the layer 2 relay type, if the service priority of the current service is greater than the service priority If the level threshold is set, it corresponds to the Layer 3 relay type. Correspondingly, the remote terminal selects the Layer 3 relay type. Or, if the service priority of the current service is less than or equal to the service priority threshold, the layer 3 relay type corresponds to, and accordingly, the remote terminal selects the layer 3 relay type. If the service priority of the current service is greater than the service priority threshold , it corresponds to the layer 2 relay type. Correspondingly, the remote terminal selects the layer 2 relay type.

For item (10):

Optionally, if the resource allocation mode of the relay terminal is mode 1, the corresponding layer 2 relay type is corresponding, and correspondingly, the remote terminal selects the layer 2 relay type. If the resource allocation mode of the relay terminal is mode 2, then Corresponding to the Layer 3 relay type, correspondingly, the remote terminal selects the Layer 3 relay type. Or, if the resource allocation mode of the relay terminal is Mode 1, the corresponding Layer 3 relay type is corresponding. Correspondingly, the remote terminal selects the Layer 3 relay type. If the resource allocation mode of the relay terminal is Mode 2, the corresponding Layer 3 relay type is selected. 2 relay type, correspondingly, the remote terminal selects the layer 2 relay type.

It should be understood that the mode 1 here refers to that the relay terminal obtains service resources by sending an uplink scheduling request (Scheduling Request, SR) and a buffer status report (Buffer Status Report, BSR). Mode 2 here refers to that the relay terminal acquires service resources by sensing the resource pool.

Explain for item (11):

Optionally, different relay types correspond to different cell ID lists, and the discovery message sent by the relay terminal will also carry the cell ID. Select the relay type according to the corresponding relationship of the relay type. For example, if the layer 2 relay type corresponds to cell ID list 1, the layer 3 relay type corresponds to cell ID list 2, and the cell ID carried in the discovery message sent by the relay terminal is in cell ID list 1, the remote terminal selects The relay type corresponding to the cell identifier list 1, that is, the layer 2 relay type.

It should be noted that if the cell ID carried in the discovery message sent by the relay terminal is not in any cell ID list corresponding to the relay type, the remote terminal can select the relay type according to other implementations, such as selecting the default one. Relay type, this application does not limit other implementations.

Optionally, the default relay type may be configured by the network device for the remote terminal, or pre-configured for the remote terminal, or carried by the discovery message of the relay terminal and broadcast to the remote terminal. There is no restriction on the application.

Optionally, the cell identity may be an EUTRAN Cell Global Identity (ECGI) or an NR Cell Global Identity (NCGI), which is not limited in this application.

For item (12):

Optionally, different relay types correspond to different target address identification lists. The remote terminal may select the relay type according to the correspondence between the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs and the relay type. For example: if the layer 2 trunk type corresponds to the target address identifier list 1, the layer three trunk type corresponds to the target address identifier list 2, and the target address identifier corresponding to the current service is in the target address identifier list 1, the remote terminal selects the target address identifier list 1. The address identifies the trunk type corresponding to List 1, that is, the Layer 2 trunk type.

It should be noted that if the target address identifier corresponding to the current service is not in any target address identifier list corresponding to the relay type, the remote terminal can select the relay type according to other implementation methods, such as selecting the default relay type, This application does not limit other implementations.

It should be noted that items (1) to (12) can be combined arbitrarily to form a relay type selection rule. For example: Combining items (7) and (8), if the QoS of the current service is less than or equal to the QoS threshold, and the QFI of the current service is less than or equal to the QFI threshold, then the corresponding layer 2 relay type, correspondingly, The remote terminal selects the layer 2 relay type, otherwise, it corresponds to the layer 3 relay type. Correspondingly, the remote terminal selects the layer 3 relay type. Or, if the QoS of the current service is less than or equal to the QoS threshold, and the QFI of the current service is less than or equal to the QFI threshold, then the corresponding Layer 3 relay type is used. Correspondingly, the remote terminal selects the Layer 3 relay type. 2 relay type, correspondingly, the remote terminal selects the layer 2 relay type.

Optionally, the above-mentioned relay type selection rule is configured by the network device to the remote terminal. Alternatively, the relay type selection rule is carried in the discovery message. Alternatively, the relay type selection rule is a preconfigured message, which is not limited in this application.

It should be noted that, in this application, the remote terminal may not select the relay type according to the relay type selection rule, but select the default relay type.

To sum up, in this application, the remote terminal can select the relay type according to the relay type selection rule or select the relay type by default.

FIG. 3 shows a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. The execution subjects involved in the method include: a remote terminal, a relay terminal, and a network device, where the remote terminal is located in the network device. The relay terminal may be within the coverage of the network device, and the relay terminal may not be within the coverage of the network device. The remote terminal may be the first remote terminal in FIG. 1 , correspondingly, the relay terminal may be the first relay terminal in FIG. 1 , or the remote terminal may be the second remote terminal in FIG. 1 , correspondingly, the relay terminal may be the second relay terminal in FIG. 1 . The network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in a wireless local area network (Wireless Local Area Networks, WLAN), a Global System of Mobile communication (Global System of Mobile communication, Base station (Base Transceiver Station, BTS) in GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a base station (NodeB, NB) in Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) ), it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device in an NR network Or a base station (gNB) or a network device in a future evolved Public Land Mobile Network (Public Land Mobile Network, PLMN) network, etc. As shown in Figure 3, the method includes the following steps:

S310a: The remote terminal monitors the discovery message sent by at least one relay terminal to obtain monitoring information.

S320a: The remote terminal sends monitoring information to the network device.

and / or,

S310b: The remote terminal sends the information of the remote terminal to the network device.

S330: The network device selects the target relay terminal and the relay type of the target relay terminal according to the monitoring information and/or the information of the remote terminal.

S340: The network device sends an indication message to the remote terminal, where the indication message is used to indicate the selected relay type.

That is, there are three options as follows:

Scheme 1: The remote terminal monitors the discovery message sent by at least one relay terminal to obtain monitoring information, and sends the monitoring information to the network device. The network device selects the target relay terminal and the relay type of the target relay terminal according to the monitoring information. .

Solution 2: The remote terminal sends the information of the remote terminal to the network device. The network device selects the target relay terminal and the relay type of the target relay terminal according to the information of the remote terminal.

Scheme 3: The remote terminal monitors the discovery message sent by at least one relay terminal to obtain monitoring information, and sends the monitoring information to the network device, and the remote terminal sends the information of the remote terminal to the network device, and the network device according to the monitoring information and the information of the remote terminal to select the target relay terminal and the relay type of the target relay terminal.

Optionally, the monitoring information includes at least one of the following information of each relay terminal in the at least one relay terminal, but is not limited to this:

(1) Target address identifiers corresponding to each relay type of each relay terminal respectively.

(2) The relay type supported by each relay terminal.

(3) The correspondence between each source identifier (Source ID) of each relay terminal and the relay type.

(4) The correspondence between each target address identifier of each relay terminal and the relay type.

(5) RSRP information of the second Uu interface and current RSRP of the second Uu interface between each relay terminal and the network device.

(6) The distance information between each relay terminal and the remote terminal and the current distance between each relay terminal and the remote terminal.

(7) Resource pool configuration information corresponding to each relay type of each relay terminal.

(8) QoS information corresponding to each relay type of each relay terminal.

(9) QFI information corresponding to each relay type of each relay terminal.

(10) The service priority corresponding to each relay type of each relay terminal.

(11) The resource allocation mode corresponding to each relay type of each relay terminal and the resource allocation mode currently used by each relay terminal.

(12) The list of cell identifiers corresponding to each relay type of each relay terminal and the cell identifiers included in the discovery message sent by each relay terminal.

(13) A list of target address identifiers corresponding to each relay type of each relay terminal.

Optionally, the information of the remote terminal includes at least one of the following, but is not limited to this:

(1) The CBR measurement value of the resource pool of the remote terminal.

(2) QoS of the current service of the remote terminal.

(3) QFI of the current service of the remote terminal.

(4) The service priority of the current service of the remote terminal.

(5) The current service of the remote terminal corresponds to the target address identifier.

(6) RSRP measurement value of the first Uu interface between the remote terminal and the network device.

(7) The relay type supported by the remote terminal.

(8) RSRP measurement value of the side link between the remote terminal and each relay terminal.

Optionally, the remote terminal can select a relay terminal that satisfies high-level criteria and has the best PC5 link quality as the target relay terminal according to the existing technology, or the network device selects the target relay terminal in sequence. .

Optionally, the relay type supported by the remote terminal may be a layer 2 relay type and/or a layer 3 relay type. Based on this, when selecting the target relay terminal, the network device selects the relay terminals that are consistent with the relay type supported by the network device. For example, if the remote terminal supports the layer 2 relay type and the layer 3 relay type, the network device selects the target relay terminal from the relay terminals supporting the layer 2 relay type and the layer 3 relay type.

Optionally, if the monitoring information includes at least one of items (1) to (4) of each relay terminal, then the remote terminal is based on items (1) to (4) of the target relay terminal. 4) At least one of the items can learn the relay type supported by the target relay terminal. If the target relay terminal supports both the layer 2 relay type and the layer 3 relay type, the remote terminal can randomly select the layer 2 relay type. Type or Layer 3 relay type, which is not limited in this application.

Optionally, if the monitoring information includes item (5) of the target relay terminal, then the network device may select the target relay type according to the information in item (5). The RSRP information of the second Uu interface may be understood as the RSRP threshold of the second Uu interface.

Optionally, if the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the current RSRP of the second Uu interface is greater than the first RSRP If the threshold is smaller than the second RSRP threshold, it corresponds to the Layer 3 relay type. Or, if the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or, greater than or equal to the second RSRP threshold, then the corresponding Layer 3 relay type, if the current RSRP of the second Uu interface is greater than the first RSRP threshold and If it is less than the second RSRP threshold, it corresponds to the layer 2 relay type. Wherein, the first RSRP threshold is smaller than the second RSRP threshold.

Optionally, the distance information in item (6) in the monitoring information is also called a distance threshold, which may be configured by the network device for the remote terminal.

When the remote terminal selects the relay type, it can judge the current distance between the remote terminal and the target relay terminal through the zone ID information carried in the target relay terminal SCI.

Optionally, if the current distance between the remote terminal and the target relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, it corresponds to the layer 2 relay type. If the current distance between the relay terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to the Layer 3 relay type. Or, if the current distance between the remote terminal and the target relay terminal is less than or equal to the first distance threshold, or is greater than or equal to the second distance threshold, the corresponding Layer 3 relay type, if the remote terminal and the target relay If the current distance between the terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to the layer 2 relay type. Wherein, the first distance threshold is smaller than the second distance threshold.

Optionally, the resource pool configuration information in item (7) in the monitoring information may be the CBR threshold of the resource pool. The information of the remote terminal may include: the CBR measurement value of the resource pool of the remote terminal.

Optionally, if the CBR measurement value is less than or equal to the first CRB threshold, or is greater than or equal to the second CRB threshold, the corresponding layer 2 relay type, if the CBR measurement value is greater than the first CRB threshold and less than the second CRB threshold, It corresponds to the Layer 3 trunk type. Or, if the CBR measurement value is less than or equal to the first CRB threshold, or is greater than or equal to the second CRB threshold, it corresponds to the Layer 3 relay type, and if the CBR measurement value is greater than the first CRB threshold and less than the second CRB threshold, it corresponds to Layer 2 trunk type. Wherein, the first CRB threshold is smaller than the second CRB threshold.

Optionally, the QoS information in item (8) in the monitoring information is also referred to as a QoS threshold. The information of the remote terminal may include: the QoS of the current service.

Optionally, if the QoS of the current service is less than or equal to the QoS threshold, it corresponds to the layer 2 relay type, and if the QoS of the current service is greater than the QoS threshold, it corresponds to the layer 3 relay type. Or, if the QoS of the current service is less than or equal to the QoS threshold, it corresponds to the layer 3 relay type, and if the QoS of the current service is greater than the QoS threshold, it corresponds to the layer 2 relay type.

It should be noted that the network device configures a QoS threshold for each relay terminal for illustrative purposes. In fact, the network device can configure other QoS thresholds for the relay terminal. Based on this, the QoS threshold can be The entire QoS range is divided into multiple QoS intervals, and each QoS interval corresponds to a relay type.

Optionally, the QFI information in item (9) in the monitoring information is also referred to as a QFI threshold. The information of the remote terminal may include: the QFI of the current service.

Optionally, if the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 2 relay type, and if the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 3 relay type. Alternatively, if the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the Layer 3 relay type, and if the QFI of the current service is greater than the QFI threshold, it corresponds to the Layer 2 relay type.

It should be noted that the network device configures a QFI threshold for each relay terminal for illustrative purposes. In fact, the network device can configure other QFI thresholds for the relay terminal. Based on this, the QFI threshold can be The entire QFI range is divided into multiple QFI sections, and each QFI section corresponds to a relay type.

Optionally, the service priority information in item (10) in the monitoring information is also referred to as a service priority threshold. The information of the remote terminal may include: the service priority of the current service.

Optionally, if the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 2 relay type, and if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 3 relay type. Or, if the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 3 relay type, and if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 2 relay type.

Optionally, if the current resource allocation mode of the target relay terminal is mode 1, it corresponds to the layer 2 relay type, and if the current resource allocation mode of the target relay terminal is mode 2, it corresponds to the layer 3 relay type. Or, if the resource allocation mode of the target relay terminal is Mode 1, it corresponds to the Layer 3 relay type, and if the resource allocation mode of the target relay terminal is Mode 2, it corresponds to the Layer 2 relay type.

Optionally, different relay types correspond to different cell ID lists, and the discovery message sent by the target relay terminal will also carry the cell ID. Select the relay type according to the corresponding relationship of the relay type.

It should be noted that, if the cell ID carried in the discovery message sent by the target relay terminal is not in any cell ID list corresponding to the relay type, the network device can select the relay type according to other implementations, such as selecting the default one. Relay type, this application does not limit other implementations.

Optionally, different relay types correspond to different target address identification lists. The network device may select the relay type according to the correspondence between the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs and the relay type.

It should be noted that if the target address identifier corresponding to the current service is not in any target address identifier list corresponding to the relay type, the network device can select the relay type according to other implementation methods, such as selecting the default relay type. The application does not limit other implementations.

Optionally, the network device may acquire the RSRP measurement value of the first Uu interface between the remote terminal and the network device and the RSRP threshold of the first Uu interface between the remote terminal and the network device.

Optionally, if the RSRP measurement value of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the RSRP measurement value of the first Uu interface is greater than or equal to the second RSRP threshold. One RSRP threshold and less than the second RSRP threshold corresponds to the Layer 3 relay type. Or, if the RSRP measurement value of the first Uu interface is less than or equal to the first RSRP threshold, or is greater than or equal to the second RSRP threshold, then the corresponding Layer 3 relay type, if the RSRP measurement value of the first Uu interface is greater than the first RSRP If the threshold is smaller than the second RSRP threshold, it corresponds to the layer 2 relay type. Wherein, the first RSRP threshold is smaller than the second RSRP threshold.

Optionally, the network device may obtain the RSRP measurement value of the sidelink between the remote terminal and each relay terminal, and the RSRP threshold value of the sidelink between the remote terminal and each relay terminal. .

Optionally, if the RSRP measurement value of the side link is less than or equal to the first RSRP threshold, or is greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the RSRP measurement value of the side link is greater than or equal to the first RSRP threshold. One RSRP threshold and less than the second RSRP threshold corresponds to the Layer 3 relay type. Or, if the RSRP measurement value of the side link is less than or equal to the first RSRP threshold, or is greater than or equal to the second RSRP threshold, then the corresponding layer 3 relay type, if the RSRP measurement value of the side link is greater than the first RSRP If the threshold is smaller than the second RSRP threshold, it corresponds to the layer 2 relay type. Wherein, the first RSRP threshold is smaller than the second RSRP threshold.

Optionally, the network device may explicitly indicate the selected target relay type to the remote terminal, or may indicate the selected target relay type implicitly. For example, the following implicit methods can be used, but not limited to this:

The network device indicates the target ID address list, resource allocation mode, cell ID list, etc. associated with the target relay type.

It should be noted that the network device may also indicate a default relay type to the remote terminal, and use the default relay type as the target relay type.

To sum up, in this application, the network device can select the relay type according to the monitoring information and/or the information of the remote terminal.

FIG. 4 shows a schematic flowchart of a wireless communication method 400 according to an embodiment of the present application. The execution subject involved in the method includes: a remote terminal and a network device, where the remote terminal is located within the coverage of the network device, And process the RRC connected state. The remote terminal may be the first remote terminal or the second remote terminal in FIG. 1 . The network device may be a device for communicating with mobile devices, and the network device may be an AP in WLAN, a BTS in GSM or CDMA, an NB in WCDMA, an eNB or eNodeB in LTE, or a relay station Or an access point, or a vehicle-mounted device, a wearable device, and a network device in an NR network, or a base station (gNB), or a network device in a future evolved PLMN network, etc. As shown in Figure 4, the method includes the following steps:

S410: The terminal device sends sidelink terminal information to the network device, where the sidelink terminal information includes: at least one relay type.

It should be understood that the side link terminal information is also referred to as through link terminal information (Sidelink UE Information).

Optionally, the side link terminal information further includes: at least one target address identifier. Wherein, at least one target address identifier is in one-to-one correspondence with at least one relay type. For example, the side link terminal information includes: {target address identifier 1, relay type 1; target address identifier 2, relay type 2; target address identifier 3, relay type 3}.

Optionally, the side link terminal information further includes: at least one target address identifier. Wherein, at least one target address identifier corresponds to one relay type, and at least one target address identifier corresponds to one QFI respectively. For example, the side link terminal information includes: {target address identifier 1{QFI, relay type 1; QFI2, relay type 2; QFI, relay type 1; QFI3, relay type 3}}.

Optionally, the terminal device is a remote terminal or a relay terminal.

To sum up, in this application, the terminal device can report the relay type to the network device.

FIG. 5 shows a schematic block diagram of a remote terminal 500 according to an embodiment of the present application. As shown in FIG. 5 , the remote terminal 500 includes: a communication unit 510 and a processing unit 520, wherein the communication unit 510 is used for receiving a discovery message sent by the relay terminal; the processing unit 520 is used for: determining the relay terminal according to the discovery message Supported relay type; select the relay type from the relay types supported by the relay terminal according to the relay type selection rule.

Optionally, the relay types supported by the relay terminal include: layer 2 relay type and layer 3 relay type.

Optionally, the relay type selection rule includes at least one of the following associations with the relay type:

The relationship between the CBR threshold of the remote terminal and the size of the current CRB;

The size relationship between the CBR measurement value and the CBR threshold value corresponding to each relay type of the relay terminal;

The relationship between the RSRP threshold of the sidelink between the remote terminal and the relay terminal and the current RSRP of the sidelink;

The size relationship between the RSRP threshold of the first Uu interface and the current RSRP of the first Uu interface between the remote terminal and the network device;

The size relationship between the RSRP threshold of the second Uu interface and the current RSRP of the second Uu interface between the relay terminal and the network device;

The relationship between the distance threshold and the current distance between the remote terminal and the relay terminal;

The relationship between the QoS threshold and the QoS of the current service of the remote terminal;

The relationship between the QFI threshold and the QFI of the current service of the remote terminal;

The relationship between the service priority threshold and the service priority of the current service of the remote terminal;

Resource allocation mode of the relay terminal;

List of cell identities;

A list of destination address identifiers.

Optionally, if the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, it corresponds to the Layer 2 relay type. If the current CRB is greater than the first CRB threshold and less than the second CRB threshold, it corresponds to Layer 3 relay type; or, if the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, the corresponding Layer 3 relay type, if the current CRB is greater than the first CRB threshold and less than the second CRB The threshold value corresponds to the layer 2 relay type.

Optionally, for any relay type among different relay types of the relay terminal, if the CRB measurement value corresponding to the relay type is less than or equal to the CRB threshold corresponding to the relay type, the relay type corresponds to; For any relay type among different relay types of the relay terminal, if the CRB measurement value corresponding to the relay type is greater than the CRB threshold corresponding to the relay type, it corresponds to the relay type.

Optionally, if the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the current RSRP of the sidelink is greater than the first RSRP The threshold value is smaller than the second RSRP threshold value, corresponding to the Layer 3 relay type; or, if the current RSRP of the sidelink is less than or equal to the first RSRP threshold value, or greater than or equal to the second RSRP threshold value, then the corresponding Layer 3 relay threshold Type, if the current RSRP of the sidelink is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the layer 2 relay type.

Optionally, if the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the current RSRP of the first Uu interface is greater than the first RSRP The threshold value is smaller than the second RSRP threshold, corresponding to the Layer 3 relay type; or, if the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, then the corresponding Layer 3 relay Type, if the current RSRP of the first Uu interface is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the layer 2 relay type.

Optionally, if the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the current RSRP of the second Uu interface is greater than the first RSRP The threshold value and less than the second RSRP threshold value corresponds to the layer three relay type; or, if the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold value, or is greater than or equal to the second RSRP threshold value, then the corresponding layer three relay Type, if the current RSRP of the second Uu interface is greater than the first RSRP threshold and less than the second RSRP threshold, it corresponds to the layer 2 relay type.

Optionally, if the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, it corresponds to the Layer 2 relay type. If the current distance between the terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to the Layer 3 relay type; or, if the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or , greater than or equal to the second distance threshold, corresponds to the Layer 3 relay type. If the current distance between the remote terminal and the relay terminal is greater than the first distance threshold and less than the second distance threshold, it corresponds to the Layer 2 relay type.

Optionally, if the QoS of the current service is less than or equal to the QoS threshold, it corresponds to the Layer 2 relay type; if the QoS of the current service is greater than the QoS threshold, it corresponds to the Layer 3 relay type; or, if the QoS of the current service is less than or equal to the QoS threshold The QoS threshold corresponds to the Layer 3 relay type. If the QoS of the current service is greater than the QoS threshold, it corresponds to the Layer 2 relay type.

Optionally, if the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 2 relay type; if the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 3 relay type; or, if the QFI of the current service is less than or equal to The QFI threshold corresponds to the Layer 3 trunk type. If the QFI of the current service is greater than the QFI threshold, it corresponds to the Layer 2 trunk type.

Optionally, if the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 2 relay type; if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 3 relay type; or, If the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 3 relay type; if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 2 relay type.

Optionally, if the resource allocation mode of the relay terminal is mode 1, it corresponds to the layer 2 relay type; if the resource allocation mode of the relay terminal is mode 2, it corresponds to the layer 3 relay type; or, if the relay terminal If the resource allocation mode of the relay terminal is Mode 1, it corresponds to the Layer 3 relay type. If the resource allocation mode of the relay terminal is Mode 2, it corresponds to the Layer 2 relay type.

Optionally, the processing unit 520 is specifically configured to: determine the list of cell identifiers to which the cell identifier carried in the discovery message belongs; and select the relay type according to the correspondence between the list of cell identifiers to which the cell identifier carried in the discovery message belongs and the relay type.

Optionally, the processing unit 520 is specifically configured to: determine the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs; according to the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs and the Select the relay type according to the corresponding relationship of the relay type.

Optionally, the relay type selection rule is configured by the network device to the remote terminal; or, the relay type selection rule is carried in the discovery message; or the relay type selection rule is a pre-configured message.

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

It should be understood that the remote terminal 500 according to the embodiment of the present application may correspond to the remote terminal in the method embodiment corresponding to FIG. 2 , and the above-mentioned and other operations and/or functions of each unit in the remote terminal 500 are for the purpose of realizing The corresponding process of the remote terminal in the method embodiment corresponding to FIG. 2 is not repeated here for brevity.

FIG. 6 shows a schematic block diagram of a remote terminal 600 according to an embodiment of the present application. As shown in FIG. 6, the remote terminal 600 includes: a communication unit 610, configured to: monitor a discovery message sent by at least one relay terminal to obtain monitoring information, and send the monitoring information to a network device; and/or, to the network The device sends the information of the remote terminal, wherein the monitoring information and/or the information of the remote terminal is used to select the target relay terminal and the relay type of the target relay terminal; receive an indication message, the indication message is used to indicate the selected relay type.

Optionally, the monitoring information includes at least one of the following information of each relay terminal:

The target address identifier corresponding to each relay type of each relay terminal;

The relay type supported by each relay terminal;

The correspondence between each source identifier of each relay terminal and the relay type;

The correspondence between each target address identifier of each relay terminal and the relay type;

RSRP information of the second Uu interface between each relay terminal and the network device and the current RSRP of the second Uu interface;

The distance information between each relay terminal and the remote terminal and the current distance between each relay terminal and the remote terminal;

Resource pool configuration information corresponding to each relay type of each relay terminal;

QoS information corresponding to each relay type of each relay terminal;

QFI information corresponding to each relay type of each relay terminal;

The service priority corresponding to each relay type of each relay terminal;

The resource allocation mode corresponding to each relay type of each relay terminal and the resource allocation mode currently used by each relay terminal;

The list of cell identifiers corresponding to each relay type of each relay terminal and the cell identifier included in the discovery message sent by each relay terminal;

A list of target address identifiers corresponding to each relay type of each relay terminal.

Optionally, the information of the remote terminal includes at least one of the following:

CBR measurement value of the resource pool of the remote terminal;

QoS of the current service of the remote terminal;

QFI of the current service of the remote terminal;

The service priority of the current service of the remote terminal;

The current service of the remote terminal corresponds to the target address identifier;

the RSRP measurement value of the first Uu interface between the remote terminal and the network device;

The trunk type supported by the remote terminal;

RSRP measurements for the sidelink between the remote terminal and each relay terminal.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver.

It should be understood that the remote terminal 600 according to this embodiment of the present application may correspond to the remote terminal in the method embodiment corresponding to FIG. 3 , and the above-mentioned and other operations and/or functions of each unit in the remote terminal 600 are for the purpose of realizing The corresponding process of the remote terminal in the method embodiment corresponding to FIG. 3 is not repeated here for brevity.

FIG. 7 shows a schematic block diagram of a terminal device 700 according to an embodiment of the present application. As shown in FIG. 7 , the terminal device 700 includes: a communication unit 710 for sending sidelink terminal information to a network device; wherein the sidelink terminal information includes: at least one relay type.

Optionally, the side link terminal information further includes: at least one target address identifier; wherein, the at least one target address identifier corresponds to at least one relay type one-to-one.

Optionally, the side link terminal information further includes: at least one target address identifier; wherein, at least one target address identifier corresponds to one relay type, and at least one target address identifier corresponds to one QFI respectively.

Optionally, the terminal device is a remote terminal or a relay terminal.

It should be understood that the terminal device 700 according to the embodiment of the present application may correspond to the terminal device in the method embodiment corresponding to FIG. 4 , and the above-mentioned and other operations and/or functions of the various units in the terminal device 700 are respectively for the purpose of realizing the corresponding one in FIG. 4 . For the sake of brevity, the corresponding process of the terminal device in the method embodiment is not repeated here.

FIG. 8 shows a schematic block diagram of a network device 800 according to an embodiment of the present application. As shown in FIG. 8 , the network device 800 includes: a communication unit 810 and a processing unit 820; wherein, the communication unit 810 is configured to receive monitoring information and/or information of a remote terminal, and the monitoring information is that the remote terminal monitors at least one relay The information obtained by the discovery message sent by the terminal; the processing unit 820 is used to select the target relay terminal and the relay type of the target relay terminal according to the monitoring information and/or the information of the remote terminal; the communication unit 810 is also used to send the information to the remote terminal Send an indication message, which is used to indicate the selected relay type.

The relay type supported by each relay terminal;

QoS information corresponding to each relay type of each relay terminal;

QFI information corresponding to each relay type of each relay terminal;

The service priority corresponding to each relay type of each relay terminal;

CBR measurement value of the resource pool of the remote terminal;

QoS of the current service of the remote terminal;

QFI of the current service of the remote terminal;

The service priority of the current service of the remote terminal;

The trunk type supported by the remote terminal;

It should be understood that the network device 800 according to the embodiment of the present application may correspond to the network device in the method embodiment corresponding to FIG. 3 , and the above-mentioned and other operations and/or functions of each unit in the network device 800 are respectively for the purpose of realizing the corresponding one in FIG. 3 . For the sake of brevity, the corresponding process of the network device in the method embodiment of the method is not repeated here.

FIG. 9 shows a schematic block diagram of a network device 900 according to an embodiment of the present application. As shown in FIG. 9 , the network device 900 includes: a communication unit 910 configured to receive sidelink terminal information sent by a terminal device; wherein the sidelink terminal information includes: at least one relay type.

Optionally, the terminal device is a remote terminal or a relay terminal.

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

It should be understood that the network device 900 according to the embodiment of the present application may correspond to the network device in the method embodiment corresponding to FIG. 4 , and the above-mentioned and other operations and/or functions of each unit in the network device 900 are for the purpose of realizing the corresponding method shown in FIG. 4 , respectively. For the sake of brevity, the corresponding process of the network device in the method embodiment of the method is not repeated here.

FIG. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application. The communication device 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can 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. 10 , the communication device 1000 may further include a memory 1020 . The processor 1010 may call and run a computer program from the memory 1020 to implement the methods in the embodiments of the present application.

The memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.

Optionally, as shown in FIG. 10 , the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.

Among them, the transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 1000 may specifically be the network device in this embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 1000 may specifically be a terminal device in this embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the terminal device in each method in this embodiment of the present application. For the sake of brevity, details are not repeated here. .

FIG. 11 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The apparatus 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the apparatus 1100 may further include a memory 1120 . The processor 1110 may call and run a computer program from the memory 1120 to implement the methods in the embodiments of the present application.

The memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.

Optionally, the apparatus 1100 may further include an input interface 1130 . The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the apparatus 1100 may further include an output interface 1140 . The processor 1110 may control the output interface 1140 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

Optionally, the apparatus can be applied to the network equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application, which are not repeated here for brevity.

Optionally, the apparatus may be applied to the terminal equipment in the embodiments of the present application, and the apparatus may implement the corresponding processes implemented by the terminal equipment in each method of the embodiments of the present application, which will not be repeated here for brevity.

Optionally, the device mentioned in the embodiment of the present application may also be a chip. For example, it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can 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 available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. 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 conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

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

Optionally, the computer-readable storage medium can be applied to the network device or the base station in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device or the base station in each method of the embodiments of the present application, in order to It is concise and will not be repeated here.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.

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

Optionally, the computer program product can be applied to the network device or the base station in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device or the base station in each method of the embodiments of the present application, for the sake of brevity. , and will not be repeated here.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the network device or the base station in the embodiments of the present application, and when the computer program runs on the computer, the computer can execute the corresponding methods implemented by the network device or the base station in each method of the embodiments of the present application. The process, for the sake of brevity, will not be repeated here.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

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

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A wireless communication method, comprising:

The remote terminal receives the discovery message sent by the relay terminal;

The remote terminal determines the relay type supported by the relay terminal according to the discovery message;

The remote terminal selects a relay type from the relay types supported by the relay terminal according to the relay type selection rule.
The method according to claim 1, wherein the relay types supported by the relay terminal include: a layer 2 relay type and a layer 3 relay type.
The method according to claim 1 or 2, wherein the relay type selection rule includes an association relationship between at least one of the following and the relay type:

The relationship between the resource pool channel busy ratio CBR threshold of the remote terminal and the current CRB;

The magnitude relationship between the CBR measurement value and the CBR threshold value corresponding to each relay type of the relay terminal;

The magnitude relationship between the reference signal received power RSRP threshold of the sidelink between the remote terminal and the relay terminal and the current RSRP of the sidelink;

The size relationship between the RSRP threshold of the first Uu interface between the remote terminal and the network device and the current RSRP of the first Uu interface;

The size relationship between the RSRP threshold of the second Uu interface between the relay terminal and the network device and the current RSRP of the second Uu interface;

The magnitude relationship between the distance threshold and the current distance between the remote terminal and the relay terminal;

The relationship between the quality of service QoS threshold and the QoS of the current service of the remote terminal;

QoS flow identification QFI threshold and the magnitude relationship of the QFI of the current service of the remote terminal;

The relationship between the service priority threshold and the service priority of the current service of the remote terminal;

the resource allocation mode of the relay terminal;

List of cell identities;

A list of destination address identifiers.
The method of claim 3, wherein:

If the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, the corresponding layer 2 relay type, if the current CRB is greater than the first CRB threshold and less than the second CRB threshold, corresponds to the Layer 3 relay type; or,

If the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, the corresponding Layer 3 relay type, if the current CRB is greater than the first CRB threshold and less than the second CRB The threshold value corresponds to the layer 2 relay type.
The method of claim 3, wherein:

For any relay type among different relay types of the relay terminal, if the CRB measurement value corresponding to the relay type is less than or equal to the CRB threshold corresponding to the relay type, the relay type corresponds to the relay type. ;or,

For any relay type among different relay types of the relay terminal, if the CRB measurement value corresponding to the relay type is greater than the CRB threshold corresponding to the relay type, the relay type corresponds to the relay type.
The method of claim 3, wherein:

If the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the layer 2 relay type, and if the current RSRP of the sidelink is greater than the first RSRP threshold An RSRP threshold value and less than the second RSRP threshold value corresponds to the Layer 3 relay type; or,

If the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the Layer 3 relay type, and if the current RSRP of the sidelink is greater than the first RSRP threshold An RSRP threshold that is smaller than the second RSRP threshold corresponds to a layer 2 relay type.
The method of claim 3, wherein:

If the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the current RSRP of the first Uu interface is greater than the second RSRP threshold An RSRP threshold value and less than the second RSRP threshold value corresponds to the Layer 3 relay type; or,

If the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the Layer 3 relay type, and if the current RSRP of the first Uu interface is greater than the second RSRP threshold An RSRP threshold that is smaller than the second RSRP threshold corresponds to a layer 2 relay type.
The method of claim 3, wherein:

If the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the Layer 2 relay type, and if the current RSRP of the second Uu interface is greater than the first RSRP threshold An RSRP threshold value and less than the second RSRP threshold value corresponds to the Layer 3 relay type; or,

If the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding Layer 3 relay type, if the current RSRP of the second Uu interface is greater than the first RSRP threshold An RSRP threshold that is smaller than the second RSRP threshold corresponds to a layer 2 relay type.
The method of claim 3, wherein:

If the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, it corresponds to the layer 2 relay type. If the current distance between the relay terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to the Layer 3 relay type; or,

If the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, it corresponds to the Layer 3 relay type. If the current distance between the relay terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to a layer 2 relay type.
The method of claim 3, wherein:

If the QoS of the current service is less than or equal to the QoS threshold, it corresponds to a layer 2 relay type; if the QoS of the current service is greater than the QoS threshold, it corresponds to a layer 3 relay type; or,

If the QoS of the current service is less than or equal to the QoS threshold, it corresponds to a layer 3 relay type, and if the QoS of the current service is greater than the QoS threshold, it corresponds to a layer 2 relay type.
The method of claim 3, wherein:

If the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 2 relay type; if the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 3 relay type; or,

If the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 3 relay type, and if the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 2 relay type.
The method of claim 3, wherein:

If the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 2 relay type, and if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 3 relay type; or,

If the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 3 relay type, and if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 2 relay type.
The method of claim 3, wherein:

If the resource allocation mode of the relay terminal is Mode 1, it corresponds to the Layer 2 relay type, and if the resource allocation mode of the relay terminal is Mode 2, it corresponds to the Layer 3 relay type; or,

If the resource allocation mode of the relay terminal is Mode 1, it corresponds to the Layer 3 relay type, and if the resource allocation mode of the relay terminal is Mode 2, it corresponds to the Layer 2 relay type.
The method according to claim 3, wherein the remote terminal selects a relay type according to a relay type selection rule, comprising:

determining, by the remote terminal, a list of cell identifiers to which the cell identifier carried in the discovery message belongs;

The remote terminal selects the relay type according to the correspondence between the cell ID list to which the cell ID carried in the discovery message belongs and the relay type.
The method according to claim 3, wherein the remote terminal selects a relay type according to a relay type selection rule, comprising:

The remote terminal determines the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs;

The remote terminal selects the relay type according to the correspondence between the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs and the relay type.
The method according to any one of claims 1-15, wherein the relay type selection rule is configured by a network device to the remote terminal; or, the relay type selection rule is carried in the discovery message; or, the relay type selection rule is a preconfigured message.
A wireless communication method, comprising:

The remote terminal monitors the discovery message sent by at least one relay terminal to obtain monitoring information, and sends the monitoring information to the network device; and/or the remote terminal sends the network device the information of the remote terminal to the network device. information, wherein the monitoring information and/or the information of the remote terminal is used to select the target relay terminal and the relay type of the target relay terminal;

The remote terminal receives an indication message, where the indication message is used to indicate the selected relay type.
The method according to claim 17, wherein the monitoring information includes at least one of the following information of each relay terminal:

A target address identifier corresponding to each relay type of each relay terminal;

the relay type supported by each of the relay terminals;

The correspondence between each source identifier of each of the relay terminals and the relay type;

The correspondence between each target address identifier of each described relay terminal and the relay type;

RSRP information of each second Uu interface between the relay terminal and the network device and the current RSRP of the second Uu interface;

distance information between each relay terminal and the remote terminal and the current distance between each relay terminal and the remote terminal;

Resource pool configuration information corresponding to each relay type of each relay terminal;

QoS information corresponding to each relay type of each relay terminal;

QFI information corresponding to each relay type of each relay terminal;

a service priority corresponding to each relay type of each relay terminal;

a resource allocation mode corresponding to each relay type of each of the relay terminals and a resource allocation mode currently used by each of the relay terminals;

A list of cell identifiers corresponding to each relay type of each relay terminal and a cell identifier included in a discovery message sent by each relay terminal;

A list of target address identifiers corresponding to each relay type of each relay terminal.
The method according to claim 17 or 18, wherein the information of the remote terminal includes at least one of the following:

the CBR measurement value of the resource pool of the remote terminal;

the QoS of the current service of the remote terminal;

the QFI of the current service of the remote terminal;

the service priority of the current service of the remote terminal;

a target address identifier corresponding to the current service of the remote terminal;

the RSRP measurement value of the first Uu interface between the remote terminal and the network device;

the relay type supported by the remote terminal;

RSRP measurements of the sidelink between the remote terminal and each of the relay terminals.
A wireless communication method, comprising:

The terminal device sends sidelink terminal information to the network device;

Wherein, the sidelink terminal information includes: at least one relay type.
The method according to claim 20, wherein the side link terminal information further comprises: at least one target address identifier;

The at least one target address identifier corresponds to the at least one relay type in one-to-one correspondence.
The method according to claim 20, wherein the side link terminal information further comprises: at least one target address identifier;

Wherein, the at least one target address identifier corresponds to a relay type, and the at least one target address identifier corresponds to a QFI respectively.
The method according to any one of claims 20-22, wherein the terminal device is a remote terminal or a relay terminal.
A wireless communication method, comprising:

The network device receives monitoring information and/or information of a remote terminal, where the monitoring information is information obtained by the remote terminal monitoring a discovery message sent by at least one relay terminal;

The network device selects the target relay terminal and the relay type of the target relay terminal according to the monitoring information and/or the information of the remote terminal;

The network device sends an indication message to the remote terminal, where the indication message is used to indicate the selected relay type.
The method according to claim 24, wherein the monitoring information includes at least one of the following information of each relay terminal:

A target address identifier corresponding to each relay type of each relay terminal;

the relay type supported by each of the relay terminals;

The correspondence between each source identifier of each of the relay terminals and the relay type;

The correspondence between each target address identifier of each described relay terminal and the relay type;

RSRP information of each second Uu interface between the relay terminal and the network device and the current RSRP of the second Uu interface;

distance information between each relay terminal and the remote terminal and the current distance between each relay terminal and the remote terminal;

Resource pool configuration information corresponding to each relay type of each relay terminal;

QoS information corresponding to each relay type of each relay terminal;

QFI information corresponding to each relay type of each relay terminal;

a service priority corresponding to each relay type of each relay terminal;

a resource allocation mode corresponding to each relay type of each of the relay terminals and a resource allocation mode currently used by each of the relay terminals;

A list of cell identifiers corresponding to each relay type of each relay terminal and a cell identifier included in a discovery message sent by each relay terminal;

A list of target address identifiers corresponding to each relay type of each relay terminal.
The method according to claim 24 or 25, wherein the information of the remote terminal includes at least one of the following:

the CBR measurement value of the resource pool of the remote terminal;

the QoS of the current service of the remote terminal;

the QFI of the current service of the remote terminal;

the service priority of the current service of the remote terminal;

a target address identifier corresponding to the current service of the remote terminal;

the RSRP measurement value of the first Uu interface between the remote terminal and the network device;

the relay type supported by the remote terminal;

RSRP measurements of the sidelink between the remote terminal and each of the relay terminals.
A wireless communication method, comprising:

The network device receives the sidelink terminal information sent by the terminal device;

Wherein, the sidelink terminal information includes: at least one relay type.
The method according to claim 27, wherein the side link terminal information further comprises: at least one target address identifier;

The at least one target address identifier corresponds to the at least one relay type in one-to-one correspondence.
The method according to claim 27, wherein the side link terminal information further comprises: at least one target address identifier;

Wherein, the at least one target address identifier corresponds to a relay type, and the at least one target address identifier corresponds to a QFI respectively.
The method according to any one of claims 27-29, wherein the terminal device is a remote terminal or a relay terminal.
A remote terminal, characterized in that it includes:

a communication unit, configured to receive a discovery message sent by the relay terminal;

Processing unit for:

Determine the relay type supported by the relay terminal according to the discovery message;

The relay type is selected from the relay types supported by the relay terminal according to the relay type selection rule.
The remote terminal according to claim 31, wherein the relay types supported by the relay terminal include: layer 2 relay type and layer 3 relay type.
The remote terminal according to claim 31 or 32, wherein the relay type selection rule includes an association relationship between at least one of the following and the relay type:

The relationship between the CBR threshold of the remote terminal and the size of the current CRB;

The magnitude relationship between the CBR measurement value and the CBR threshold value corresponding to each relay type of the relay terminal;

The relationship between the RSRP threshold of the sidelink between the remote terminal and the relay terminal and the current RSRP of the sidelink;

The size relationship between the RSRP threshold of the first Uu interface between the remote terminal and the network device and the current RSRP of the first Uu interface;

The size relationship between the RSRP threshold of the second Uu interface between the relay terminal and the network device and the current RSRP of the second Uu interface;

The magnitude relationship between the distance threshold and the current distance between the remote terminal and the relay terminal;

QoS threshold and the magnitude relationship of the QoS of the current service of the remote terminal;

The relationship between the QFI threshold and the QFI of the current service of the remote terminal;

The relationship between the service priority threshold and the service priority of the current service of the remote terminal;

the resource allocation mode of the relay terminal;

List of cell identities;

A list of destination address identifiers.
The remote terminal according to claim 33, wherein,

If the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, the corresponding layer 2 relay type, if the current CRB is greater than the first CRB threshold and less than the second CRB threshold, it corresponds to the Layer 3 relay type; or,

If the current CRB is less than or equal to the first CRB threshold, or greater than or equal to the second CRB threshold, the corresponding Layer 3 relay type, if the current CRB is greater than the first CRB threshold and less than the second CRB The threshold value corresponds to the layer 2 relay type.
The remote terminal according to claim 33, wherein,

For any relay type among different relay types of the relay terminal, if the CRB measurement value corresponding to the relay type is less than or equal to the CRB threshold corresponding to the relay type, the relay type corresponds to the relay type. ;or,

For any relay type among different relay types of the relay terminal, if the CRB measurement value corresponding to the relay type is greater than the CRB threshold corresponding to the relay type, the relay type corresponds to the relay type.
The remote terminal according to claim 33, wherein,

If the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the layer 2 relay type, and if the current RSRP of the sidelink is greater than the first RSRP threshold An RSRP threshold value and less than the second RSRP threshold value corresponds to the Layer 3 relay type; or,

If the current RSRP of the sidelink is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the Layer 3 relay type, and if the current RSRP of the sidelink is greater than the first RSRP threshold An RSRP threshold that is smaller than the second RSRP threshold corresponds to a layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding layer 2 relay type, if the current RSRP of the first Uu interface is greater than the second RSRP threshold An RSRP threshold value and less than the second RSRP threshold value corresponds to the Layer 3 relay type; or,

If the current RSRP of the first Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the Layer 3 relay type, and if the current RSRP of the first Uu interface is greater than the second RSRP threshold An RSRP threshold that is smaller than the second RSRP threshold corresponds to a layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, it corresponds to the Layer 2 relay type, and if the current RSRP of the second Uu interface is greater than the first RSRP threshold An RSRP threshold value and less than the second RSRP threshold value corresponds to the Layer 3 relay type; or,

If the current RSRP of the second Uu interface is less than or equal to the first RSRP threshold, or greater than or equal to the second RSRP threshold, the corresponding Layer 3 relay type, if the current RSRP of the second Uu interface is greater than the first RSRP threshold An RSRP threshold that is smaller than the second RSRP threshold corresponds to a layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, it corresponds to the layer 2 relay type. If the current distance between the relay terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to the Layer 3 relay type; or,

If the current distance between the remote terminal and the relay terminal is less than or equal to the first distance threshold, or greater than or equal to the second distance threshold, it corresponds to the Layer 3 relay type. If the current distance between the relay terminals is greater than the first distance threshold and less than the second distance threshold, it corresponds to a layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the QoS of the current service is less than or equal to the QoS threshold, it corresponds to a layer 2 relay type; if the QoS of the current service is greater than the QoS threshold, it corresponds to a layer 3 relay type; or,

If the QoS of the current service is less than or equal to the QoS threshold, it corresponds to a layer 3 relay type, and if the QoS of the current service is greater than the QoS threshold, it corresponds to a layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 2 relay type; if the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 3 relay type; or,

If the QFI of the current service is less than or equal to the QFI threshold, it corresponds to the layer 3 relay type, and if the QFI of the current service is greater than the QFI threshold, it corresponds to the layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 2 relay type, and if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 3 relay type; or,

If the service priority of the current service is less than or equal to the service priority threshold, it corresponds to the layer 3 relay type, and if the service priority of the current service is greater than the service priority threshold, it corresponds to the layer 2 relay type.
The remote terminal according to claim 33, wherein,

If the resource allocation mode of the relay terminal is Mode 1, it corresponds to the Layer 2 relay type, and if the resource allocation mode of the relay terminal is Mode 2, it corresponds to the Layer 3 relay type; or,

If the resource allocation mode of the relay terminal is Mode 1, it corresponds to the Layer 3 relay type, and if the resource allocation mode of the relay terminal is Mode 2, it corresponds to the Layer 2 relay type.
The remote terminal according to claim 33, wherein the processing unit is specifically configured to:

determining a list of cell identities to which the cell identity carried in the discovery message belongs;

The relay type is selected according to the correspondence between the cell ID list to which the cell ID carried in the discovery message belongs and the relay type.
The remote terminal according to claim 33, wherein the processing unit is specifically configured to:

Determine the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs;

The relay type is selected according to the correspondence between the target address identifier list to which the target address identifier corresponding to the current service of the remote terminal belongs and the relay type.
The remote terminal according to any one of claims 31-45, wherein the relay type selection rule is configured by a network device to the remote terminal; or, the relay type selection rule is carried in in the discovery message; or, the relay type selection rule is a preconfigured message.
A remote terminal, comprising: a communication unit for:

monitoring a discovery message sent by at least one relay terminal to obtain monitoring information, and sending the monitoring information to a network device; and/or sending information of the remote terminal to the network device, wherein the monitoring information And/or the information of the remote terminal is used to select the target relay terminal and the relay type of the target relay terminal;

An indication message is received, where the indication message is used to indicate the selected relay type.
The remote terminal according to claim 47, wherein the monitoring information includes at least one of the following information of each relay terminal:

A target address identifier corresponding to each relay type of each relay terminal;

the relay type supported by each of the relay terminals;

The correspondence between each source identifier of each of the relay terminals and the relay type;

The correspondence between each target address identifier of each described relay terminal and the relay type;

RSRP information of each second Uu interface between the relay terminal and the network device and the current RSRP of the second Uu interface;

distance information between each relay terminal and the remote terminal and the current distance between each relay terminal and the remote terminal;

Resource pool configuration information corresponding to each relay type of each relay terminal;

QoS information corresponding to each relay type of each relay terminal;

QFI information corresponding to each relay type of each relay terminal;

a service priority corresponding to each relay type of each relay terminal;

a resource allocation mode corresponding to each relay type of each of the relay terminals and a resource allocation mode currently used by each of the relay terminals;

A list of cell identifiers corresponding to each relay type of each relay terminal and a cell identifier included in a discovery message sent by each relay terminal;

A list of target address identifiers corresponding to each relay type of each relay terminal.
The remote terminal according to claim 47 or 48, wherein the information of the remote terminal includes at least one of the following:

the CBR measurement value of the resource pool of the remote terminal;

the QoS of the current service of the remote terminal;

the QFI of the current service of the remote terminal;

the service priority of the current service of the remote terminal;

a target address identifier corresponding to the current service of the remote terminal;

the RSRP measurement value of the first Uu interface between the remote terminal and the network device;

the relay type supported by the remote terminal;

RSRP measurements of the sidelink between the remote terminal and each of the relay terminals.
A terminal device, characterized in that it includes:

a communication unit, configured to send sidelink terminal information to the network device;

Wherein, the sidelink terminal information includes: at least one relay type.
The terminal device according to claim 50, wherein the side link terminal information further comprises: at least one target address identifier;

The at least one target address identifier corresponds to the at least one relay type in one-to-one correspondence.
The terminal device according to claim 50, wherein the side link terminal information further comprises: at least one target address identifier;

Wherein, the at least one target address identifier corresponds to a relay type, and the at least one target address identifier corresponds to a QFI respectively.
The terminal device according to any one of claims 50-52, wherein the terminal device is a remote terminal or a relay terminal.
A network device, comprising: a communication unit and a processing unit;

The communication unit is configured to receive monitoring information and/or information of a remote terminal, where the monitoring information is information obtained by the remote terminal monitoring a discovery message sent by at least one relay terminal;

The processing unit is configured to select the target relay terminal and the relay type of the target relay terminal according to the monitoring information and/or the information of the remote terminal;

The communication unit is further configured to send an indication message to the remote terminal, where the indication message is used to indicate the selected relay type.
The network device according to claim 54, wherein the monitoring information includes at least one of the following information of each relay terminal:

A target address identifier corresponding to each relay type of each relay terminal;

the relay type supported by each of the relay terminals;

The correspondence between each source identifier of each of the relay terminals and the relay type;

The correspondence between each target address identifier of each described relay terminal and the relay type;

RSRP information of each second Uu interface between the relay terminal and the network device and the current RSRP of the second Uu interface;

distance information between each relay terminal and the remote terminal and the current distance between each relay terminal and the remote terminal;

Resource pool configuration information corresponding to each relay type of each relay terminal;

QoS information corresponding to each relay type of each relay terminal;

QFI information corresponding to each relay type of each relay terminal;

a service priority corresponding to each relay type of each relay terminal;

a resource allocation mode corresponding to each relay type of each of the relay terminals and a resource allocation mode currently used by each of the relay terminals;

A list of cell identifiers corresponding to each relay type of each relay terminal and a cell identifier included in a discovery message sent by each relay terminal;

A list of target address identifiers corresponding to each relay type of each relay terminal.
The network device according to claim 54 or 55, wherein the information of the remote terminal includes at least one of the following:

the CBR measurement value of the resource pool of the remote terminal;

the QoS of the current service of the remote terminal;

the QFI of the current service of the remote terminal;

the service priority of the current service of the remote terminal;

a target address identifier corresponding to the current service of the remote terminal;

the RSRP measurement value of the first Uu interface between the remote terminal and the network device;

the relay type supported by the remote terminal;

RSRP measurements of the sidelink between the remote terminal and each of the relay terminals.
A network device, characterized in that it includes:

a communication unit, configured to receive sidelink terminal information sent by the terminal device;

Wherein, the sidelink terminal information includes: at least one relay type.
The network device according to claim 57, wherein the side link terminal information further comprises: at least one target address identifier;

The at least one target address identifier corresponds to the at least one relay type in one-to-one correspondence.
The network device according to claim 57, wherein the side link terminal information further comprises: at least one target address identifier;

Wherein, the at least one target address identifier corresponds to a relay type, and the at least one target address identifier corresponds to a QFI respectively.
The network device according to any one of claims 57-59, wherein the terminal device is a remote terminal or a relay terminal.
A terminal device, characterized in that it includes: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 23. one of the methods described.
A network device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 24 to 30. one of the methods described.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 23.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 24 to 30.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 23.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 24 to 30.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 23.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 24 to 30.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 23.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 24 to 30.