CN117278179A

CN117278179A - QoS parameter segmentation method, qoS parameter segmentation device, communication equipment, communication system and readable storage medium

Info

Publication number: CN117278179A
Application number: CN202210682272.9A
Authority: CN
Inventors: 郑倩; 王文
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2023-12-22
Also published as: WO2023241559A1

Abstract

The application discloses a QoS parameter segmentation method, a device, a communication system and a readable storage medium, which belong to the technical field of communication, and the QoS parameter segmentation method in the embodiment of the application comprises the following steps: the method comprises the steps that first relay User Equipment (UE) receives a first QoS parameter sent by the first UE, wherein the first UE is connected with the upstream one-hop of the first relay UE, and the first QoS parameter comprises a QoS parameter between the first UE and a target UE; the first relay UE determines a second QoS parameter according to the first QoS parameter; the first relay UE sends a second QoS parameter to a second UE, wherein the second UE is connected with the downstream one-hop of the first relay UE; wherein the second QoS parameter includes a QoS parameter between the first relay UE and the target UE; the source UE and the target UE communicate with each other through the first relay UE.

Description

QoS parameter segmentation method, qoS parameter segmentation device, communication equipment, communication system and readable storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a QoS parameter segmentation method, a QoS parameter segmentation device, communication equipment, a communication system and a readable storage medium.

Background

Currently, when a Source (Source) UE needs to transmit data with a Target (Target) UE, and the Source UE has poor coverage, the Source UE may find an end-to-end (U2U) Relay (Relay) UE (hereinafter referred to as a Relay UE) as data therein, and in general, the Relay UE is open and may serve any Source UE and Target UE.

Specifically, the source UE sends an end-to-end quality of service (Quality of Service, qoS) parameter between the source UE and the target UE to the relay UE, where the end-to-end QoS parameter is determined by a service QoS requirement between the source UE and the target UE; the relay UE directly determines segmentation of the end-to-end QoS parameters (QoS segmentation).

However, the above method is not suitable for a multi-hop (multiple relay UE) scenario, when data transmission between a source UE and a target UE involves a plurality of relay UEs to relay in turn, any one of the plurality of relay UEs cannot timely learn about a wireless link condition of each hop, so that segmentation performance of an end-to-end QoS parameter is poor, and actual transmission cannot meet a service QoS requirement between the source UE and the target UE.

Disclosure of Invention

The embodiment of the application provides a QoS parameter segmentation method, a device, communication equipment, a communication system and a readable storage medium, which can solve the problems that the segmentation performance of end-to-end QoS parameters is poor and the actual transmission cannot meet the service QoS requirement between source UE and target UE.

In a first aspect, a QoS parameter segmentation method is provided, applied to a first relay UE, the method including: the method comprises the steps that first relay User Equipment (UE) receives a first QoS parameter sent by the first UE, wherein the first UE is connected with the upstream one-hop of the first relay UE, and the first QoS parameter comprises a QoS parameter between the first UE and a target UE; the first relay UE determines a second QoS parameter according to the first QoS parameter; the first relay UE sends a second QoS parameter to a second UE, wherein the second UE is connected with the downstream one-hop of the first relay UE; wherein the second QoS parameter includes a QoS parameter between the first relay UE and the target UE; the source UE and the target UE communicate with each other through the first relay UE.

In a second aspect, there is provided a QoS parameter splitting apparatus comprising: the device comprises a receiving module, a determining module and a sending module. The receiving module is used for receiving a first QoS parameter sent by a first UE, wherein the first UE is the UE connected with the upstream one-hop of the QoS parameter dividing device, and the first QoS parameter comprises the QoS parameter between the first UE and the target UE; the determining module is used for determining a second QoS parameter according to the first QoS parameter received by the receiving module; the sending module is used for sending the second QoS parameter determined by the determining module to a second UE, wherein the second UE is connected with the downstream one-hop of the QoS parameter segmentation device; wherein the second QoS parameter comprises a QoS parameter between the UE and the target UE; the source UE communicates with the target UE via the UE.

In a third aspect, a QoS parameter segmentation method is provided, applied to a source UE, and the method includes: the source UE determines a fifth QoS parameter according to the target QoS parameter; the source UE sends a fifth QoS parameter to a second relay UE, wherein the second relay UE is a relay UE connected with a downstream one-hop of the source UE; wherein the target QoS parameter is determined according to a traffic QoS requirement of the sidelink communication between the source UE and the target UE, and the fifth QoS parameter comprises: candidate QoS parameters corresponding to a radio link between the source UE and the second relay UE, qoS parameters between the second relay UE and the target UE.

In a fourth aspect, there is provided a QoS parameter splitting apparatus including: a determining module and a transmitting module. A determining module, configured to determine a fifth QoS parameter according to the target QoS parameter; the sending module is used for sending the fifth QoS parameter determined by the determining module to the second relay UE, wherein the second relay UE is a relay UE connected with the downstream one-hop of the QoS parameter segmentation device; wherein the target QoS parameter is determined according to a traffic QoS requirement of the sidelink communication between the QoS parameter splitting apparatus and the target UE, and the fifth QoS parameter includes: the QoS parameter segmentation device is used for segmenting the candidate QoS parameter corresponding to the wireless link between the second relay UE and the target UE.

In a fifth aspect, a QoS parameter segmentation method is provided, applied to a target UE, and the method includes: the target UE receives a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected with the upstream one-hop of the target UE, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the target UE; the target UE determines the adopted QoS parameters of the wireless link according to the sixth QoS parameters; the target UE sends the adopted QoS parameters to the third relay UE.

In a sixth aspect, there is provided a QoS parameter splitting apparatus comprising: the device comprises a receiving module, a determining module and a sending module; the receiving module is used for receiving a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected with the upstream of the QoS parameter segmentation device by one hop, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the QoS parameter segmentation device; the determining module is used for determining the adopted QoS parameters of the wireless link according to the sixth QoS parameters received by the receiving module; and the sending module is used for sending the adopted QoS parameters determined by the determining module to the third relay UE.

In a seventh aspect, there is provided a communication device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method as in the first, third or fifth aspects when executed by the processor.

An eighth aspect provides a communication device, including a processor and a communication interface, where the communication interface is configured to receive a first QoS parameter sent by a first UE, the first UE being a UE connected upstream of the communication device by one hop, and the first QoS parameter includes a QoS parameter between the first UE and a target UE; a processor configured to determine a second QoS parameter according to the first QoS parameter, the second QoS parameter including a QoS parameter between the communication device and the target UE; the source UE and the target UE communicate by a sidelink through the communication device.

A ninth aspect provides a communication device comprising a processor and a communication interface, wherein the processor is configured to determine a fifth QoS parameter according to a target QoS parameter; the communication interface is used for sending the fifth QoS parameter to the second relay UE, and the second relay UE is a relay UE connected with the downstream one-hop of the communication equipment; the target QoS parameter is determined according to a traffic QoS requirement of the sidelink communication between the communication device and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to a radio link between the communication device and the second relay UE, qoS parameters between the second relay UE and the target UE.

In a tenth aspect, a communication device is provided, including a processor and a communication interface, where the communication interface is configured to receive a sixth QoS parameter sent by a third relay UE, where the third relay UE is a relay UE connected upstream of the communication device by one hop, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the communication device; a processor configured to determine an adopted QoS parameter of the wireless link between the third relay UE and the communication device according to the sixth QoS parameter; and the communication interface is further used for sending the adopted QoS parameters to the third relay UE.

In an eleventh aspect, there is provided a sidelink communication system comprising a source UE, a relay UE and a target UE, the source UE being operable to perform the steps of the QoS parameter segmentation method as in the third aspect, the relay UE being operable to perform the steps of the QoS parameter segmentation method as in the first aspect, the target UE being operable to perform the steps of the QoS parameter segmentation method as in the fifth aspect.

In a twelfth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method of the first, third or fifth aspects.

In a thirteenth aspect, there is provided a chip comprising a processor and a communications interface, the communications interface being coupled to the processor for running a program or instructions to implement a method as in the first, third or fifth aspects.

In a fourteenth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to perform the steps of the method as in the first, third or fifth aspects.

In the embodiment of the application, as any UE (for example, the first UE) in the sidelink communication system can send the QoS parameter between the first UE and the target UE to the UE (for example, the first relay UE) connected in one hop downstream of the UE, the first relay UE can further determine the QoS parameter between the first relay UE and the target UE, so that a plurality of UEs in the sidelink communication system can participate in the negotiation of end-to-end QoS parameter segmentation, the segmentation performance of the QoS parameter can be improved, and the service QoS requirement between the source UE and the target UE can be finally met.

Drawings

FIG. 1 is a block diagram of a sidelink communication system to which embodiments of the present application may be applied;

FIG. 2 is a schematic diagram of a sidelink communication flow in a single hop scenario;

FIG. 3 is one of the end-to-end relay protocol stack schematics in a single hop relay scenario;

fig. 4 is a flowchart of a QoS parameter segmentation method according to an embodiment of the present application;

fig. 5 is a second flowchart of a QoS parameter segmentation method according to an embodiment of the present disclosure;

fig. 6 is a third flowchart of a QoS parameter partitioning method according to an embodiment of the present disclosure;

fig. 7 is a flowchart illustrating a QoS parameter partitioning method according to an embodiment of the present disclosure;

fig. 8 is a fifth flowchart of a QoS parameter partitioning method according to an embodiment of the present application;

fig. 9 is a flowchart illustrating a QoS parameter partitioning method according to an embodiment of the present application;

fig. 10 is a flowchart of a QoS parameter segmentation method according to an embodiment of the present disclosure;

fig. 11 is a flowchart illustrating a QoS parameter partitioning method according to an embodiment of the present disclosure;

fig. 12 is a flowchart illustrating a QoS parameter partitioning method according to an embodiment of the present disclosure;

fig. 13 is one of schematic structural diagrams of a QoS parameter segmentation apparatus according to an embodiment of the present application;

Fig. 14 is a second schematic structural diagram of a QoS parameter partitioning apparatus according to an embodiment of the present disclosure;

fig. 15 is a third schematic structural diagram of a QoS parameter partitioning apparatus according to an embodiment of the present disclosure;

fig. 16 is one of schematic structural diagrams of a communication device provided in an embodiment of the present application;

fig. 17 is a second schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes an NR system for purposes of example and NR terminology is used in much of the description below, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

The following first explains some nouns or terms referred to in the claims and the specification of the present application.

Description of Sidelink (SL)

The sidelinks are also referred to as side links, etc.

As shown in fig. 1, the long term evolution (Long Term Evolution, LTE) system supports a sidelink from release 12, and the sidelink is used for direct data transmission between UEs 11 without through the network side device 12.

The design of LTE SL is applicable to specific public safety transactions (e.g. emergency communication in disaster sites such as fire or earthquake), or internet of vehicles (vehicle to everything, V2X) communication, etc. V2X communications include various services, such as basic security class communications, advanced (automated) driving, formation, sensor expansion, and so forth. Since LTE SL only supports Broadcast (BC) communication, it is mainly used for basic security class communication, and other advanced V2X communication services with strict QoS requirements in terms of latency, reliability, etc. will be supported by fifth generation mobile communication technology (5 th Generation Mobile Communication Technology, abbreviated as 5G) NR SL.

Transmission form of 2, NR SL

The transmission form of NR SL is mainly broadcast, multicast (GC), unicast (UC) and several transmission types (cast type). Unicast, as the name implies, is a one-to-one (one to one) transmission. Multicasting is a one-to-many (one-to-many) transmission. Broadcast is also a one-to-many (one-to-many) transmission, but broadcast does not have the concept that UEs belong to the same group.

3, relay UE based side Link (SL-based U2U Relay) mechanism

In order to better cover and achieve the terminal power saving effect, the NR system researches a relay mechanism based on the SL wireless air interface. A typical scenario is illustrated in fig. 2 below, with single hop relay (i.e. only one relay UE) being exemplified:

as shown in fig. 2, the source UE needs to transmit data with the target UE, but finds the end-to-end relay UE as a relay because of poor coverage. The auxiliary link PC5 interface is arranged between the relay UE and the source UE; also between the relay UE and the source UE is a sidelink PC5 interface. In general, relay UEs are open and can serve any source UE and target UE.

It will be appreciated that the source UE may also be referred to as a Remote (Remote) UE and the Target UE may also be referred to as a Destination (Destination) UE.

The PC5 interface is the interface between the module of the vehicle and the vehicle, road side equipment and human interaction. Interface for device-to-device direct communication between UEs using V2X services.

In fig. 2, a single-hop relay scenario is illustrated, and in actual implementation, if a multi-hop relay scenario is illustrated, more than one relay UE is connected between the source UE and the target UE.

L2U 2U relay protocol stack

Fig. 3 is a schematic diagram of an L2 end-to-end relay (U2U relay) protocol stack in a single-hop relay scenario. It can be seen that the end-to-end QoS parameters are partitioned into 2 parts, respectively: qoS parameters between source UE and relay UE, qoS parameters between relay UE and target UE.

PC5-RRC: the radio resource control protocol based on the PC5 interface, the English of RRC is called: radio Resource Control;

PC5-PDCP: the English of PDCP is called as all based on the packet data convergence protocol of the PC5 interface: packet Data Convergence Protocol;

PC5-SRAP: SL relay adaptation protocol based on PC5 interface, the english of SRAP is all called: SL (sidelink) Relay Adaptation Protocol.

PC5-RLC: the English of the RLC is called as the whole based on the wireless link layer control protocol of the PC5 interface: radio Link Control.

PC5-MAC: the English of MAC is called Media Access Control based on the media access control protocol of the PC5 interface.

PC5-PHY: based on the physical layer protocol of the PC5 interface, the English of PHY is fully called: and (3) Physical.

The QoS parameter segmentation method, apparatus, communication device, communication system and readable storage medium provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings by some embodiments and application scenarios thereof.

QoS parameter segmentation methods based on a single relay UE (i.e., a single hop relay scenario), the QoS parameter segmentation methods of Layer 3 (Layer-3) and Layer 2 relay scenarios are exemplarily described below, respectively

The QoS parameter segmentation method of the layer 3 relay scenario may include the following steps 5a to 5e:

Step 5a: the source UE sends end-to-end QoS parameters to the relay UE, the end-to-end QoS parameters being determined by the traffic QoS requirements between the source UE and the target UE.

Step 5b: the relay UE receives and is responsible for QoS parameter segmentation, i.e. end-to-end QoS parameter segmentation into: { first hop QoS parameter of wireless link between source UE and relay UE } + { second hop QoS parameter of wireless link between relay UE and target UE }.

Step 5c: the relay UE transmits { the second hop QoS parameters of the wireless link between the relay UE and the target UE } to the target UE.

Step 5d: the relay UE receives an acknowledgement from the target UE for the second hop QoS parameter of the wireless link between the relay UE and the target UE.

Step 5e: the relay UE further sends an acknowledgement to the source UE for the first hop QoS parameter of the wireless link between the source UE and the relay UE.

Based on the above steps, the source UE starts traffic data transmission with the target UE.

The QoS parameter segmentation method of the layer 2 relay scenario may include the following steps 6a to 6f.

And 6a, establishing end-to-end connection between the source UE and the target UE, and determining an end-to-end QoS parameter in the process of establishing the connection, wherein the end-to-end QoS parameter is determined by the service QoS requirement between the source UE and the target UE.

Step 6 b-step 6f: the core idea is the same as that of the steps 5a-5e. The main difference is that the layer 2 relay scenario needs to initiate QoS segmentation after an end-to-end connection is established between Source UE and target UE, whereas the layer 3 relay scenario has no concept of end-to-end connection and can initiate QoS parameter segmentation from the beginning.

It can be seen that the relay UE directly decides what the QoS parameters of the two radio links are, respectively.

The QoS parameter segmentation method provided by the embodiment of the application aims at: in the QoS parameter segmentation process supporting at least one of the uplink and/or the downstream wireless links, each UE can segment the corresponding QoS parameter according to the conditions (such as the quality of the uplink/downstream wireless links, the congestion degree of the current resource pool of each UE, etc.), so as to realize the best QoS segmentation result. In particular, the QoS parameter segmentation method provided by the embodiment of the application also increases negotiation and selection based on multiple sets of candidate QoS parameters and the processing of 'QoS segmentation failure' by UE, thereby perfecting QoS segmentation signaling flow.

The QoS parameter segmentation method provided by the embodiment of the application aims at a relay scene based on an SL wireless air interface, and mainly solves the problem of wireless QoS parameter segmentation method in the scene. Specifically, a signaling and a flow for multiparty QoS parameter negotiation between a source UE, at least one relay UE, and a target UE are introduced, and it is determined how to segment end-to-end QoS parameters into Hop-by-Hop QoS parameters (Hop-by-Hop QoS).

The QoS parameter segmentation method provided by the embodiment of the application supports the negotiation of QoS segmentation of a plurality of UE (such as each UE) in the U2U relay link, so that the UE can combine the conditions (such as the quality of an uplink/downlink wireless link, the congestion degree of a current resource pool and the like) to realize the optimal QoS segmentation result, and the service experience of a secondary link is improved.

The embodiment of the present application provides a QoS parameter segmentation method, fig. 4 shows a flowchart of the QoS parameter segmentation method provided by the embodiment of the present application, and as shown in fig. 4, the QoS parameter segmentation method provided by the embodiment of the present application may include the following steps 500 to 504.

Step 500, the first UE sends a first QoS parameter to the first relay UE.

Step 501, the first relay UE receives a first QoS parameter.

The first UE is UE connected upstream of the first relay UE in one hop.

In the embodiment of the present application, the first QoS parameter may include a QoS parameter between the first UE and the target UE.

It should be noted that the first OoS parameter may include a QoS parameter between the first UE and the target UE. In other words, the first QoS parameter is a total QoS parameter that can be occupied by wireless links of all hops between the first UE and the target UE. Optionally, the first QoS parameter may include an undivided QoS parameter between the first UE and the target UE; or the first QoS parameters include all QoS parameters obtained by dividing the total QoS parameters between the first UE and the target UE.

In the embodiment of the present application, the first QoS parameter may be at least part of QoS parameters in the target QoS parameters. For example, the target QoS parameters may be determined for the source UE based on traffic QoS requirements of sidelink communications between the source UE and the target UE.

In this application, the upstream hop may also be referred to as a previous hop, and the definition of the upstream hop in this application is: the first UE adjacent to the source UE in the relay link is the UE connected in the upstream one-hop. For example: the source UE is connected with the target UE through the relay UE1, and the source UE is an upstream one-hop UE of the relay UE1, and a link between the source UE and the relay UE1 is simply called an upstream one-hop; for another example, the source UE …, the relay UE1, the relay UE2, the …, and the target UE, the relay UE1 is an upstream one-hop UE, and the link between the relay UE1 and the relay UE2 is an upstream one-hop UE for the relay UE 2. The definition of downstream hop in this application is: the first UE adjacent to the target UE in the relay link is the UE connected in the downstream one-hop. For example: the source UE is connected with the target UE through the relay UE1, the target UE is a downstream one-hop UE of the relay UE1, and a link between the relay UE1 and the target UE is simply called a downstream one-hop; for another example, the source UE- … -relay UE 2-relay UE 3- … -target UE, then for the relay UE2, the relay UE3 is a downstream one-hop UE, and the link between the relay UE2 and the relay UE3 is a downstream one-hop.

Optionally, assuming that the target QoS parameter includes M parameter entries, the first QoS parameter and the second QoS parameter each include M parameter entries, where M is a positive integer.

For example, the target QoS parameters include at least parameter items of at least one dimension of 1) to 4) below:

1) QoS identification (PC 5 5G QoS Identifier,PC5 5QI or PQI) parameters: this field represents the PQI (This field indicates either the PQI for standardized PQI or non-standardized QoS parameters) of either standardized PQI or non-standardized QoS parameters;

2) Guaranteed stream bit rate (Guaranteed Flow Bit Rate, GFBR) parameters: indicating a guaranteed bit rate (Guaranteed Bit Rate, GBR) QoS flow. The unit is: kbit/s;

3) A maximum traffic bit rate (Maximum Flow Bit Rate, MFBR) parameter representing a maximum bit rate of the GBR QoS flow. The unit is: kbit/s.

4) Range parameter: this field indicates the communication range parameter of the QoS flow in meters.

Wherein, 1) above also subdivides the parameter items of the following dimensions in particular:

resource Type (Resource Type); priority Level, packet delay budget (Packet Delay Budget), packet error rate (Packet Error Rate); average window (averaging window), maximum data burst transmission capacity (maxdataburst volume).

Alternatively, the first UE may be a source UE, or may be a relay UE connected upstream of the first relay UE.

Step 502, the first relay UE determines a second QoS parameter according to the first QoS parameter.

In the embodiment of the present application, the second QoS parameter may include a QoS parameter between the first relay UE and the target UE.

It should be noted that the second OoS parameter may include a total QoS parameter between the first relay UE and the target UE. In other words, the second QoS parameter is a total QoS parameter that all wireless links between the first relay UE and the target UE can occupy.

For other descriptions of the second QoS parameters, reference may be made in particular to the relevant descriptions of the first QoS parameters.

In the embodiment of the present application, the first relay UE may perform segmentation processing on the first QoS parameter according to the first information to obtain the second QoS parameter, so that an optimal QoS segmentation decision may be implemented.

Optionally, the first information may include at least one of: link quality of a wireless link between a first relay UE and a first UE, link quality of a wireless link between a first relay UE and a second UE (a UE connected one hop downstream of the first relay UE), congestion degree of a current resource pool of the first relay UE, and QoS parameters admissible by an upper layer of the first relay UE. The upper layer generally refers to protocol layers above an Access layer (AS) of the first relay UE, including a V2X (Vehicle-to-evaluation) layer, a short-range service ProSe (Proximity Service) layer, an application layer, and the like.

Step 502 is described in detail below.

One possible implementation manner, any UE in the sidelink communication system participates in determining QoS parameter segmentation of its upstream one-hop wireless link

Alternatively, in one possible implementation manner, the above step 502 may be specifically implemented by the following step 502 a.

In step 502a, the first relay UE determines a second QoS parameter according to the first QoS parameter and the first candidate QoS parameter.

The first candidate QoS parameters are candidate QoS parameters corresponding to a radio link between the first UE and the first relay UE, and the first candidate QoS parameters are determined according to the first QoS parameters.

Alternatively, the first candidate QoS parameters may be obtained by dividing the first QoS parameters by the first relay UE.

Optionally, the first QoS parameter may include a first candidate QoS parameter and a second QoS parameter. It will be appreciated that the values of the parameter entries of the first QoS parameter consist of the values of the first candidate QoS parameter and the values of the second QoS parameter.

Optionally, the first candidate QoS parameters include at least one set of first candidate values, and the second QoS parameters include at least one set of second candidate values. Each set of first candidate values corresponds to one or more sets of second candidate values in the at least one set of second candidate values;

Wherein, one parameter value of the first QoS parameter may include one candidate value in each set of first candidate values and a candidate value corresponding to the candidate value in the first candidate values in the second candidate values.

For example, consider each set of candidates corresponding to a set of second candidates. Taking the delay parameter (Packet Delay Budget, PDB) as an example, assuming that the delay in the first QoS parameter is 100ms, as shown in table 1 below, the first candidate QoS parameter may include 4 sets of first candidate values, respectively: 20ms,30ms,50ms,80ms; correspondingly, the second QoS parameters may include 4 sets of second candidate values, respectively: 80ms,70ms,50ms,20ms.

TABLE 1

Alternatively, in the case that the first UE is the source UE, the first QoS parameter may be a target QoS parameter, where the target QoS parameter corresponds to a traffic QoS requirement of the sidelink communication between the source UE and the target UE.

That is, in one possible implementation, the source UE does not participate in the segmentation of the target QoS parameters, and directly transmits the target QoS parameters to the relay UE connected downstream of the source UE by one hop, and the relay UE segments the target QoS parameters.

In the embodiment of the present application, since the first relay UE may determine the second QoS parameter according to the first QoS parameter and the first candidate QoS parameter, the second QoS parameter may be prevented from exceeding the QoS parameter between the first UE and the target UE, so that accuracy of QoS parameter segmentation may be improved.

In another possible implementation, any UE in the sidelink communication system at least participates in determining QoS parameter segmentation of its own downstream one-hop wireless link

Optionally, in another possible implementation manner, the first QoS parameter may include a first candidate QoS parameter and a third QoS parameter, where the first candidate QoS parameter may be a candidate QoS parameter corresponding to a radio link between the first UE and the first relay UE, and the third QoS parameter is a QoS parameter between the first relay UE and the target UE. The above step 502 may be specifically implemented by the following step 502 b.

In step 502b, the first relay UE determines a second QoS parameter at least according to the third QoS parameter.

Wherein the second QoS parameters may include: a candidate QoS parameter (hereinafter referred to as a second candidate QoS parameter) corresponding to a radio link between the first relay UE and the second UE, and a QoS parameter between the second UE and the target UE. The second UE is a UE connected one hop downstream of the first relay UE.

In this embodiment, the "QoS parameter between the second UE and the target UE" may be understood as a total QoS parameter that can be occupied by all radio links between the second UE and the target UE.

Optionally, when the second UE is the target UE, the "second candidate QoS parameter" is the same as the "QoS parameter between the second UE and the target UE", and at this time, the second QoS parameter may include only: a second candidate QoS parameter.

In this embodiment of the present application, before sending the first QoS parameter to the first relay UE, the first UE may segment the first QoS parameter to obtain a third QoS parameter and a first candidate QoS parameter; and then transmitting the third QoS parameter and the first candidate QoS parameter to the first relay UE. That is, the first relay UE sends the second QoS parameters to the second UE, in effect, to the second UE: candidate QoS parameters corresponding to a radio link between the first relay UE and the second UE, qoS parameters between the second UE and the target UE.

It is understood that the first UE may perform a segmentation process on the first QoS parameter according to the second information to obtain the first candidate QoS parameter and the third QoS parameter.

Optionally, the second information may include at least one of: the link quality of the wireless link between the first UE and the first relay UE, the congestion degree of the current resource pool of the first UE, and the QoS parameters acceptable to the upper layer of the AS layer of the first UE.

Wherein, the upper layer refers to protocol layers above the access layer of the first UE, including V2X layer, proSe layer, application layer, etc.

For other descriptions in step 502b, reference may be specifically made to the descriptions related to step 502a, and for avoiding repetition, details are not repeated here.

In the embodiment of the present application, since the first relay UE may determine, according to the QoS parameter between the first relay UE and the target UE, the candidate QoS parameter of the radio link between the first relay UE and the second relay UE, and the QoS parameter between the second UE and the target UE, that is, the first relay UE may participate in determining the candidate QoS parameter of the radio link of the first relay UE downstream one hop (that is, the radio link between the first relay UE and the second UE), it may be ensured that the candidate QoS parameter of the radio link of the first relay UE downstream one hop meets the requirement of the first relay UE, thereby improving the accuracy of the segmentation of the QoS parameter.

Alternatively, the step 502b may be specifically implemented by the following step 502b 1.

Step 502b1, the first relay UE performs selection processing on the first candidate QoS parameters, and determines a second QoS parameter according to the third QoS parameter and the selected first candidate QoS parameter.

It will be appreciated that in step 502b1, the first relay UE participates in not only the determination of the candidate QoS parameters for its downstream one-hop wireless link, but also the determination of the candidate QoS parameters for the upstream one-hop wireless link of the first relay UE.

Alternatively, assuming that the first candidate QoS parameters include N sets of first candidate values, the third QoS parameters may include K sets of third candidate values, each set of first candidate values corresponding to one or more of the at least one set of third candidate values. The first QoS parameters may include one candidate value in each set of first candidate values and a candidate value corresponding to the candidate value in the first candidate values in the third candidate values, where N and K are positive integers, and K is greater than or equal to N.

After the first relay UE receives the first QoS parameter, the first relay UE may select, according to the third information, P sets of first candidate values from the N sets of first candidate values to obtain the selected first candidate QoS parameter, where P is a positive integer less than or equal to N.

The first relay UE may then select H sets of third candidates from the K sets of third candidates based on the selected P sets of first candidates, and each of the P sets of first candidates corresponds to at least one of the H sets of third candidates. So that the first relay UE may perform at least one segmentation process for each of the at least one set of third candidates. After the at least one third set of candidate values is partitioned, a second QoS parameter may be obtained.

It can be appreciated that the first relay UE performs a segmentation process on each set of third candidate values in the at least one set of third candidate values, so as to obtain a set of fourth candidate values in the second candidate QoS parameters; from the third candidate set and the fourth candidate set, a fifth candidate set of QoS parameters between the second UE and the target UE may be determined.

Optionally, the third information may include at least one of: the method comprises the steps of enabling the link quality of a wireless link between a first UE and a first relay UE, enabling the link quality of the wireless link between the first UE and a second UE, enabling the congestion degree of a current resource pool of the first relay UE, and enabling an upper layer of an AS layer of the first relay UE to accept QoS parameters.

Optionally, in an embodiment of the present application, the third QoS parameter may include: candidate QoS parameters corresponding to a wireless link between a first relay UE and a second UE; qoS parameters between the second UE and the target UE.

It will be appreciated that the values of the parameter entries of the third QoS parameter consist of the values of the candidate QoS parameters corresponding to the radio link between the first relay UE and the second UE and the values of the QoS parameters between the second UE and the target UE.

Step 503, the first relay UE sends the second QoS parameters to the second UE.

Step 504, the second UE receives the second QoS parameter.

In the embodiment of the present application, the source UE and the target UE may perform sidelink communication through the first relay UE.

Optionally, in a case where the source UE and the target UE perform sidelink communication through a plurality of relay UEs, the plurality of relay UEs includes the first relay UE therein.

Optionally, when the source UE and the target UE perform sidelink communication through a relay UE, the second UE is the target UE;

when the source UE and the target UE perform sidelink communication through a plurality of relay UEs, the second UE may be the target UE or a relay UE connected by one hop downstream of the first relay UE.

Optionally, when the second UE is a relay UE, the second QoS parameter is at least used for the second UE to determine a QoS parameter (i.e. an overall QoS parameter that can be occupied) between the second UE and the target UE.

When the second UE is the target UE, the second QoS parameter is used by the target UE to determine an adopted QoS parameter for the wireless link between the first relay UE and the target UE.

Alternatively, the above step 503 may be specifically implemented by the following step 503 a.

Step 503a, under the condition that the target condition is met, the first relay UE sends a second QoS parameter to the second UE;

wherein the target condition may include at least one of: the wireless link between the first UE and the first relay UE has available candidate QoS parameters; there are available QoS parameters between the first relay UE and the target UE.

In the embodiment of the present application, the first relay UE sends the second QoS parameter to the second UE only when the first relay UE meets the target condition, that is, the first relay UE continues to send the second QoS parameter downwards only when the first relay UE is ensured to have the QoS parameter that can be divided, so that smooth QoS division can be ensured, validity of the second QoS parameter can be ensured, and QoS parameter division efficiency is improved.

In the QoS parameter segmentation method provided in the embodiment of the present application, since any UE (e.g., the first UE) in the sidelink communication system may send the QoS parameter between the first UE and the target UE to the UE (e.g., the first relay UE) connected in one hop downstream of the UE, the first relay UE may further determine the QoS parameter between the first relay UE and the target UE, so that a plurality of UEs in the sidelink communication system may participate in negotiation of end-to-end QoS parameter segmentation, thereby improving segmentation performance of the QoS parameter and finally meeting service QoS requirements between the source UE and the target UE.

Optionally, after the step 502, the QoS parameter segmentation method provided in the embodiment of the present application may further include the following steps 505 and 506.

Step 505, the first relay UE sends a notification message to the first UE if the target condition is not satisfied.

Step 506, the first UE receives the notification message.

The notification message is used for notifying the first UE that the QoS segmentation process fails.

For the description of the target conditions, reference may be specifically made to the description of the target conditions in the above embodiments, and in order to avoid repetition, the description is omitted here.

In the embodiment of the present invention, the first relay UE may send a notification message for notifying the first UE that the QoS parameter segmentation process fails to the first UE under the condition that the target condition is not satisfied, that is, the first relay UE may immediately feed back the result of the QoS segmentation process failure to the UE upstream thereof, so that the first UE may process the event of the QoS segmentation process failure in time, thereby improving the robustness of the QoS parameter segmentation process.

Optionally, as shown in fig. 5 in conjunction with fig. 4, after the above step 504, the QoS parameter segmentation method provided in the embodiment of the present application may further include the following steps 507 to 511.

Step 507, the second UE sends at least one set of first adopted QoS parameters to the first relay UE.

Step 508, the first relay UE receives at least one set of first adopted QoS parameters.

Wherein each set of first adopted QoS parameters may be: the QoS parameters are adopted for one-hop wireless links of at least one-hop wireless links including each-hop wireless link between the first relay UE and the target UE.

For example, assuming that a relay UE1, a relay UE2, and a relay UE3 are sequentially linked between a source UE and a target UE, and the first relay UE is the relay UE1, the at least one-hop wireless link includes: a radio link between UE1 and UE2, a radio link between UE2 and UE3, and a radio link between UE3 and the target UE.

It should be noted that at least one set of first adopted QoS parameters includes at least: the adopted QoS parameters of the wireless link between the first relay UE and the second UE. I.e. each UE in the sidelink communication system, may send the adapted QoS parameters of the radio link between these two UEs to the UE connected one hop upstream thereof. And the admission QoS parameters are determined for the UE of the two UEs that is downstream.

Step 509, the first relay UE determines a set of second adopted QoS parameters according to at least one set of first adopted QoS parameters and the first QoS parameters.

Wherein the set of second adopted QoS parameters is adopted QoS parameters of a wireless link between the first UE and the first relay UE.

In the embodiment of the application, each relay UE in the sidelink communication system may determine or determine the adopted QoS parameters of the wireless link between the relay UE and the UE connected by one hop upstream of the relay UE.

Step 510, the first relay UE sends at least one set of third adopted QoS parameters to the first UE.

Step 511, the first UE receives at least one third set of adopted QoS parameters.

Wherein each set of third adopted QoS parameters may include at least any one of: one set of first adopted QoS parameters and one set of second adopted parameters in the at least one set of first adopted QoS parameters.

In this embodiment of the present application, when the first UE is a source UE, the at least one set of third adaptation parameters is used to indicate that the end-to-end QoS parameter of the first UE is successfully segmented, so that the first UE may start to perform the sidelink data transmission through the first relay UE. When the first UE is a relay UE, the at least one third set of admission parameters is used by the first UE to determine admission QoS parameters for a wireless link between the first UE and a UE connected one hop upstream of the first UE.

In the embodiment of the present application, since the first relay UE may determine the adopted QoS parameter of the wireless link between the first relay UE and the first relay UE at least according to the first QoS parameter and the adopted QoS parameter of the wireless link between the first relay UE and the second UE transmitted by the second UE, that is, the first relay UE refers to at least the adopted QoS parameter of the wireless link between the first relay UE and the UE connected with the downstream one-hop UE, it is ensured that the QoS parameter segmentation is more accurate.

Step 509 is described in detail below in connection with the first and second modes.

The first way is: any UE in a sidelink communication system determines an adopted QoS parameter of a wireless link between the UE and a UE connected by one hop upstream of the UE based on a total QoS parameter of the UE and a target UE and adopted QoS parameters of all wireless links between the UE and the target UE

Optionally, in a first manner, the at least one set of first adopted QoS parameters may include: the QoS parameters are adopted for each hop wireless link between the first relay UE and the target UE. I.e., the at least one set of first adopted QoS parameters may include: the adopted QoS parameters for all wireless links between the first relay UE and the target UE. The above step 509 may be specifically implemented by the following step 509 a.

In step 509a, the first relay UE performs segmentation processing on the first QoS parameter and a fourth QoS parameter, to obtain a set of second adopted QoS parameters, where the fourth QoS parameter is composed of at least one set of first adopted QoS parameters.

Optionally, the first relay UE may perform addition processing on at least one set of first adaptive QoS parameters to obtain a fourth QoS parameter, and then perform subtraction processing on the first QoS parameter and the fourth QoS parameter to obtain a set of second adaptive QoS parameters. Alternatively, the first relay UE may perform subtraction processing on at least one set of first adopted QoS parameters in order using the first QoS parameters to obtain a set of second adopted QoS parameters. It can be seen that the second adopted QoS parameter is the difference between the first QoS parameter and at least one set of first adopted QoS parameters.

Of course, in practical implementation, any other possible manner may be used to perform the segmentation process on the first QoS parameter and the fourth QoS parameter, so as to obtain a set of second adopted QoS parameters.

Optionally, in an actual implementation, the second UE may further perform addition processing on the at least one set of first adopted QoS parameters to obtain a sum of the at least one set of first adopted QoS parameters, and then send the sum of the at least one set of first adopted QoS parameters to the first relay UE.

It may be appreciated that, in the embodiment of the present application, when the first UE is a relay UE, the at least one set of third adopted QoS parameters includes: a set of second adopted QoS parameters, at least one set of first QoS adopted parameters. So that the first UE, after receiving the at least one third set of adopted QoS parameters, continues to determine adopted QoS parameters for the wireless link between the first UE and the UE connected one hop upstream of the first UE based on the at least one third set of QoS parameters.

In the embodiment of the present application, since the first relay UE may determine the adopted QoS parameter of the wireless link between the first relay UE and the UE connected upstream of the first relay UE by one hop (i.e., the first UE) according to the QoS parameter between the first relay UE and the target UE and the adopted QoS parameter of each hop wireless link between the first relay UE and the target UE, it is ensured that the adopted QoS parameter of the wireless link between the first relay UE and the first UE meets the QoS service requirement between the first relay UE and the target UE, and the accuracy of QoS parameter segmentation is improved.

The second way is: and any UE in the auxiliary link communication system determines the adopted QoS parameters of the wireless link between the UE and the UE connected with the last hop of the UE according to the candidate QoS parameters of the wireless link between the UE and the UE connected with the last hop of the UE and the adopted QoS parameters of the wireless link between the UE and the UE connected with the last hop of the UE.

It will be appreciated that in the second approach, each UE needs to maintain candidate QoS parameters for the wireless link between that UE and the UE connected one hop upstream of that UE, as sent by each UE connected one hop upstream of that UE, or as determined by each UE itself.

Optionally, in a second manner, at least one set of the first adopted QoS parameters may include: the adopted QoS parameters of the wireless link between the first relay UE and the second UE. The above step 509 may be specifically realized by the following step 509 b.

In step 509b, the first relay UE determines a set of second adopted QoS parameters from the first candidate QoS parameters according to at least one set of first adopted QoS parameters.

The first candidate QoS parameter is a candidate QoS parameter corresponding to a radio link between the first UE and the first relay UE, the first candidate QoS parameter is determined by a third UE according to the first QoS parameter, and the third UE includes at least one of the following: the first UE, the first relay UE.

It should be noted that, when the at least one set of first adopted QoS parameters further includes adopted QoS parameters of other wireless links in the at least one hop wireless link, the first relay UE comprehensively considers adopted QoS parameters of the other wireless links when determining the second QoS parameters.

It may be appreciated that, in the embodiment of the present application, when the first UE is a relay UE, the at least one set of third adopted QoS parameters may at least include: the second adaptation QoS parameters are described above.

Optionally, the first relay UE may determine, according to at least one set of first adopted QoS parameters, a set of second adopted QoS parameters from the first candidate QoS parameters, as follows: the first relay UE selects a second candidate adopted QoS parameter from the first candidate QoS parameters with at least one set of first adopted QoS parameters as an index. I.e. a set of first candidate values is selected from at least one set of first candidate values of the first candidate QoS parameters.

In the embodiment of the present application, since the first relay UE may directly determine the adopted QoS parameter of the wireless link between the first relay UE and the first UE from the first candidate QoS parameters based on the adopted QoS parameter of the downstream wireless link, the operation convenience for determining the adopted QoS parameter may be improved.

Further, since the adopted QoS parameters of the radio link between the first relay UE and the first UE can be determined only according to the adopted QoS parameters of the radio link of one hop downstream of the first relay UE, signaling overhead of each UE in the sidelink communication system can be saved.

The embodiment of the present application further provides a QoS parameter segmentation method, fig. 6 shows a flowchart of the QoS parameter segmentation method provided by the embodiment of the present application, and as shown in fig. 6, the QoS parameter segmentation method provided by the embodiment of the present application may include the following steps 700 to 702.

Step 700, the source UE determines a fifth QoS parameter according to the target QoS parameter.

Step 701, the source UE sends a fifth QoS parameter to the second relay UE.

Step 702, the second relay UE receives the fifth QoS parameter.

The second relay UE is a relay UE connected with the downstream of the source UE by one hop; the target QoS parameters are determined based on traffic QoS requirements for sidelink communications between the source UE and the target UE.

In the embodiment of the present application, the fifth QoS parameters may include: candidate QoS parameters corresponding to a radio link between the source UE and the second relay UE, qoS parameters between the second relay UE and the target UE.

It can be appreciated that, when the first relay UE in the above another possible implementation manner is the first relay UE in the sidelink communication system, the source UE in the embodiment of the present application is the first UE in the above another possible implementation manner. In this case, the source UE in the embodiment of the present application may perform all operations performed by the first UE in the above another possible implementation, and the fifth QoS parameter is the same as the first QoS parameter in the above another possible implementation, and the second relay UE is the same as the first relay UE in the above another possible implementation.

For other descriptions of steps 700 to 702, reference may be made specifically to the related descriptions in the other manner, and for avoiding repetition, details are omitted here.

In the QoS parameter segmentation method provided by the embodiment of the present application, since the source UE can participate in QoS parameter segmentation, the accuracy of QoS segmentation can be improved.

Optionally, as shown in fig. 7 in conjunction with fig. 6, after the step 702, the QoS parameter segmentation method provided in the embodiment of the present application may further include the following steps 703 to 704.

Step 703, the second relay UE sends at least one fourth set of adopted QoS parameters to the source UE.

Step 704, the source UE receives at least one fourth set of adopted QoS parameters.

Wherein the at least one fourth adopted QoS parameter set may include: the adopted QoS parameters for at least one hop wireless link between the source UE and the target UE.

For example, the at least one fourth set of adoption parameters may include: the adopted QoS parameters of each hop wireless link between the source UE and the target UE, or the at least one fourth set of adopted QoS parameters may include: the adopted QoS parameters of the wireless link between the source UE and the second relay UE.

In the embodiment of the present application, the source UE may determine that the current QoS parameter segmentation procedure is successful after receiving at least one set of fourth adopted QoS parameters, so that the source UE may perform sidelink communication with the target UE through at least one relay UE. The at least one relay UE may include a second relay UE therein.

In this embodiment of the present application, the source UE may determine that the current QoS parameter segmentation procedure is successful according to the received at least one set of fourth adopted QoS parameters, so that the source UE may perform sidelink communications with the target UE through at least one relay UE.

Optionally, in conjunction with fig. 6, as shown in fig. 8, after step 702, the QoS parameter segmentation method provided in the embodiment of the present application may further include steps 705 and 706 described below.

Step 705, the second relay UE sends a target notification message to the source UE.

In step 706, the source UE receives the target notification message.

Wherein, the target notification message may be used to notify the source UE that the QoS segmentation procedure fails.

In the embodiment of the present application, the second relay UE may send the target notification message to the source UE when determining that the QoS parameter segmentation procedure fails.

For further details of step 705, reference may be made to the relevant description of step 505 in the above embodiments.

It may be appreciated that in the embodiment of the present application, the second relay UE may send the target notification message to the source UE in a case where it is determined that no QoS parameter is available between the second relay UE and the target UE, for example, a candidate QoS parameter is not available for a wireless link between the second relay UE and a UE connected by one hop downstream of the second relay UE.

In the embodiment of the present application, since the second relay UE may send the source UE a target notification message for notifying the source UE that the QoS segmentation procedure fails, the source UE may be enabled to learn the result of the QoS segmentation procedure in time and respond to the result accordingly.

Optionally, after the step 706, the QoS parameter segmentation method provided in the embodiment of the present application may further include at least one of the following steps 707 and 708.

Step 707, the source UE releases the end-to-end connection with the target UE.

Step 708, source triggers QoS parameter renegotiation with target UE.

In the embodiment of the present application, after determining that the QoS segmentation process fails, the source UE releases the end-to-end connection with the target UE, and/or may trigger the QoS parameter renegotiation with the target UE, so that the QoS segmentation process may be perfected.

The embodiment of the application also provides a QoS parameter segmentation method, fig. 9 shows a flow chart of the QoS parameter segmentation method provided by the embodiment of the application, and as shown in fig. 9, the QoS parameter segmentation method provided by the embodiment of the application may include the following steps 1000 to 1004.

Step 1000, the third relay UE sends the sixth QoS parameter to the target UE.

In step 1001, the target UE receives the sixth QoS parameter.

The third relay UE is a relay UE connected upstream of the target UE by one hop, and the sixth QoS parameter is a candidate QoS parameter corresponding to a radio link between the third relay UE and the target UE.

Optionally, at least one set of sixth candidate values may be included in the sixth QoS parameter.

Step 1002, the target UE determines an adopted QoS parameter of the radio link between the third relay UE and the target UE according to the sixth QoS parameter.

In the embodiment of the present application, the target UE may select a set of sixth candidate values from at least one set of sixth candidate values, as the adopted QoS parameters of the radio link between the third relay UE and the target UE.

Step 1003, the target UE sends the adopted QoS parameters of the radio link between the third relay UE and the target UE to the third relay UE.

Step 1004, the third relay UE receives an adopted QoS parameter of the radio link between the third relay UE and the target UE.

In this embodiment of the present application, when the second UE in the above embodiment is the target UE, the third relay UE is the same as the first relay UE in the above embodiment, and may perform all the operations performed by the first relay UE. At this time, the sixth QoS parameter may be the same as the second QoS parameter described above.

In the QoS parameter segmentation method provided by the embodiment of the present application, since the target UE may participate in determining the adopted QoS parameter of the wireless link between the target UE and the third relay UE, it may be ensured that the adopted QoS parameter of the wireless link between the target UE and the third relay UE may meet the requirement of the target UE, so that the accuracy of the QoS segmentation procedure may be improved.

In order to facilitate understanding of the QoS parameter segmentation method provided in the embodiment of the present application, the QoS parameter segmentation method provided in the embodiment of the present application is further exemplarily described below by taking as an example that a source UE and a target UE perform sidelink communication through 3 relay UEs.

In the following embodiments 1 to 3, it is assumed that S relay UEs are connected between a source UE and a target UE, and that a radio link between the source UE and a 1 st relay UE is referred to as hop-0, a radio link between the 1 st relay UE and a 2 nd relay UE is referred to as hop-1, and so on, a radio link between the S-th relay UE and the target UE is referred to as hop-S, and S is a positive integer.

Embodiment 1: each UE in a sidelink communication system is involved in deciding QoS parameter segmentation for its own upstream one-hop radio link

In embodiment 1, the source UE (because there is no upstream) does not participate in QoS segmentation; the 1 st relay UE determines the candidate QoS parameters for hop-0, the 1 st relay UE participates in determining the candidate QoS parameters for hop-1, and so on.

Illustratively, s=3 is taken as an example, that is, a sidelink communication system includes a source UE, a relay UE1, a relay UE2, a relay UE3, and a target UE connected in sequence. The wireless link between the source UE and the relay UE1 is referred to as hop-0, the wireless link between the relay UE1 and the relay UE2 is referred to as hop-1, the wireless link between the relay UE2 and the relay UE3 is referred to as hop-2, and the wireless link between the relay UE3 and the target UE is referred to as hop-3. As shown in fig. 10, the QoS parameter segmentation method provided in the embodiment of the present application may include the following steps 1 to 11:

step 1: the source UE sends an end-to-end QoS parameter (E2E QoS in fig. 10, i.e., a target QoS parameter) to the relay UE1, which is determined by the traffic QoS requirements between the source UE and the target UE.

So that relay UE1 can receive the end-to-end QoS parameters.

Step 2: relay UE1 determines "hop-0 candidate QoS parameters" (QoS for hop-0 in fig. 10, e.g., first candidate QoS parameters) from the end-to-end QoS parameters. Wherein the "hop-0 candidate QoS parameters" have at least one of the following characteristics:

the "hop-0 candidate QoS parameters" consist of at least one set of candidate values, such as at least one set of first candidate values in the above-described embodiment.

From the "hop-0 candidate QoS parameters" and the end-to-end QoS parameters, "the total QoS parameters between the relay UE1 and the target UE" (in fig. 10, "QoS for remaining hops") can be derived. The "total QoS parameters between relay UE1 and target UE" also consists of at least one set of candidate values.

For example, with delay as a typical QoS parameter, assuming an end-to-end QoS parameter of 100ms, if the "hop-0 candidate QoS parameter" includes at least one set of candidate values, then the following candidate combination exists: the delay of hop0 is 20ms, and the delay of the total QoS parameter between the relay UE1 and the target UE is 80ms; the delay of hop0 is 50ms, and the delay of the total QoS parameter between relay UE1 and target UE is 50ms.

Relay UE1 may combine the own AS layer and upper layer cases (e.g., uplink/downlink radio link quality, current resource pool congestion level, upper layer admissible QoS, etc.) to achieve an optimal QoS decision.

Step 3: if the relay UE1 determines that there is a "hop-0 candidate QoS parameter" or "total QoS parameter between the relay UE1 and the target UE" available, the relay UE1 transmits the "total QoS parameter between the relay UE1 and the target UE" to its own downstream node, i.e., the relay UE2. Thus, the relay UE2 can receive the "total QoS parameter between the relay UE1 and the target UE".

Otherwise, the relay UE1 notifies the source UE of the occurrence of the "QoS segmentation flow failure", that is, sends a notification message to the source UE notifying the source UE of the occurrence of the "QoS segmentation flow failure".

Step 4: after receiving the "total QoS parameter between the relay UE1 and the target UE", the relay UE2 determines a "hop-1 candidate QoS parameter" (QoS for hop-1 in fig. 10) according to the "total QoS parameter between the relay UE1 and the target UE", where the "hop-1 candidate QoS parameter" has at least one of the following characteristics:

the "hop-1 candidate QoS parameters" consist of at least one set of candidate values.

From the "hop-1 candidate QoS parameters" and the "total QoS parameters between relay UE1 and target UE" (QoS for remaining hops in fig. 10), the "total QoS parameters between relay UE2 and target UE" can be derived. The "total QoS parameters between relay UE2 and target UE" also consists of at least one set of candidate values.

Step 5: if the relay UE2 determines that "the candidate QoS parameters of hop-1" or "the total QoS parameters between UE2 and the target UE" are available, the relay UE2 transmits "the total QoS parameters between the relay UE2 and the target UE" to its own downstream node, i.e., relay UE3.

Otherwise, the relay UE2 notifies itself to the upstream node (i.e., relay UE 1) that the "QoS segmentation flow failure" has occurred.

Step 6: after the relay UE3 receives the "total QoS parameter between the relay UE2 and the target UE", the relay UE3 determines "candidate QoS parameters of hop-2" according to the "total QoS parameter between the relay UE2 and the target UE" (QoS for hop-2 in fig. 10). Wherein the "hop2 candidate QoS parameters" have at least one of the following characteristics:

the "hop-2 candidate QoS parameters" consist of at least one set of candidate values.

From the "hop-2 candidate QoS parameters" and the "total QoS parameters between relay UE2 and target UE", it is possible to derive the "total QoS parameters between relay UE3 and target UE" (QoS for remaining hops in fig. 10), and the "total QoS parameters between relay UE3 and target UE" also consist of at least one set of candidate values.

Step 7: if the relay UE3 determines that there is "hop-2 candidate QoS parameter" or "total QoS parameter between the relay UE3 and the target UE" available, the relay UE3 transmits "total QoS parameter between the relay UE3 and the target UE" to the target UE.

Otherwise, the relay UE3 notifies itself to the upstream node (i.e., relay UE) that the "QoS segmentation flow failure" has occurred.

After the target UE receives the "total QoS parameter between relay UE3 and target UE", the target UE determines "hop-3 adopted QoS parameter" according to the "total QoS parameter between relay UE3 and target UE" (accepted QoS for hop-3 in fig. 10). Wherein the adopted QoS parameter of "hop-3" has one set of candidate values that are the candidate QoS parameters of "hop-2".

Step 8: the target UE sends the "hop-3 adopted QoS parameters" to the relay UE3.

After the relay UE3 receives the "hop-3 adopted QoS parameters", the relay UE3 decides "hop-2 adopted QoS parameters" (accepted QoS for hop-2 in fig. 10).

Step 9: the relay UE3 transmits at least "hop-2 adopted QoS parameters" to the relay UE2.

The relay UE3 may then determine the adopted QoS parameters of "hop-1" (accepted QoS for hop-1 in fig. 10).

Step 10: the relay UE2 transmits at least "hop-1 adopted QoS parameters" to the relay UE1.

The relay UE2 may then determine the adopted QoS parameter of "hop-0" (accepted QoS for hop-0 in fig. 10).

Step 11: the relay UE1 transmits at least "hop-0 adopted QoS parameters" to the source UE.

If the source UE receives any one of the adopted QoS parameters in the step 11, the QoS segmentation flow is considered to be successfully completed; otherwise, the QoS segmentation flow is considered to fail.

If the source UE judges that the QoS segmentation flow fails, one of the following measures is adopted: releasing the end-to-end connection with the target UE; triggering end-to-end QoS renegotiation with the target UE.

Optionally, the series of steps of QoS segmentation described above is implemented by PC5-RRC or PC5-S signaling procedures. In case of a PC5-RRC signaling procedure, the messages in steps 1, 3, 5 and 7 may be PC5 RRC reconfiguration messages, and the messages in steps 8 to 11 may be PC5 RRC reconfiguration complete messages or PC5 RRC reconfiguration failure messages. In the case of a PC5-S signaling flow, the messages in steps 1, 3, 5 and 7 may be PC5-S link modification messages, and the messages in steps 8 to 11 may be PC5-S link modification accept messages or PC5-S link modification reject messages.

Embodiment 2: each UE in a sidelink communication system participates in determining QoS parameter partitioning for its own downstream one-hop wireless link

In embodiment 2, the source UE determines the candidate QoS parameters of hop-0, the 1 st relay UE participates in determining the candidate QoS parameters of hop-1, and so on, and the S-th relay UE determines the candidate QoS parameters of hop- (S), and the target UE does not participate in determining the candidate QoS parameters because there is no downstream UE.

Illustratively, s=3 is taken as an example, that is, a sidelink communication system includes a source UE, a relay UE1, a relay UE2, a relay UE3, and a target UE connected in sequence. The wireless link between the source UE and the relay UE1 is referred to as hop-0, the wireless link between the relay UE1 and the relay UE2 is referred to as hop-1, the wireless link between the relay UE2 and the relay UE3 is referred to as hop-2, and the wireless link between the relay UE3 and the target UE is referred to as hop-3. As shown in fig. 11, the QoS parameter segmentation method provided in the embodiment of the present application may include the following steps 12 to 23:

step 12: the source UE determines the "hop-0 candidate QoS parameters" (QoS for hop-0 in fig. 11). Wherein the "hop-0 candidate QoS parameters" have at least one of the following characteristics:

From the "hop-0 candidate QoS parameters" and the end-to-end QoS parameters, "the" total QoS parameters between relay UE1 and target UE "(QoS for remaining hops in fig. 11) can be derived. The "total QoS parameters between relay UE1 and target UE" also consists of at least one set of candidate values. The end-to-end QoS parameters are determined by the traffic QoS requirements between the source UE and the target UE.

Step 13: the source UE transmits the "hop-0 candidate QoS parameters" and the "total QoS parameters between the relay UE1 and the target UE" to the relay UE1.

Thus, relay UE1 may receive "hop-0's candidate QoS parameters" and "total QoS parameters between relay UE1 and target UE".

Step 14: relay UE1 determines "hop-1 candidate QoS parameters" (QoS for hop-1 in fig. 11). Wherein the "hop-1 candidate QoS parameters" have at least one of the following characteristics:

From the "candidate QoS parameters of hop-1" and the "total QoS parameters between relay UE1 and target UE", the "total QoS parameters between relay UE2 and target UE" (QoS for remaining hops in fig. 11) can be derived. The "total QoS parameters between relay UE2 and target UE" also consists of at least one set of candidate values.

Step 15: if the relay UE1 judges that "candidate QoS parameters of hop-1" or "total QoS parameters between relay UE2 and target UE" are available, the relay UE1 transmits "candidate QoS parameters of hop-1" and "total QoS parameters between relay UE2 and target UE" to its own downstream node (relay UE 2).

Otherwise, the relay UE1 notifies the source UE that "QoS segmentation flow failure" has occurred.

Step 16: after the relay UE2 receives the "candidate QoS parameters for hop-1" and the "total QoS parameters between the relay UE2 and the target UE", the relay UE2 determines the "candidate QoS parameters for hop-2" (QoS for hop-2 in fig. 11). Wherein the "hop-2 candidate QoS parameters" have at least one of the following characteristics:

From the "candidate QoS parameters of hop-2" and the "total QoS parameters between relay UE2 and target UE", the "total QoS parameters between relay UE3 and target UE" (QoS for remaining hops in fig. 11) can be derived. The "total QoS parameters between relay UE3 and target UE" also consists of at least one set of candidate values.

Step 17: if the relay UE2 determines that "hop-2 candidate QoS parameters" or "total QoS parameters between the relay UE2 and the target UE" are available, the relay UE2 transmits "hop-2 candidate QoS parameters" and "total QoS parameters between the relay UE2 and the target UE" to its own downstream node (i.e., relay UE 3).

Otherwise, the relay UE2 notifies itself to the upstream node (i.e., relay UE 2) that "QoS segmentation flow failure" has occurred.

Step 18: after the relay UE3 receives the "candidate QoS parameters for hop-2" and the "total QoS parameters between the relay UE2 and the target UE", the relay UE3 determines the "candidate QoS parameters for hop-3" (QoS for hop-3 in fig. 11). Wherein the "hop-3 candidate QoS parameters" have at least one of the following characteristics:

the "hop-3 candidate QoS parameters" consist of at least one set of candidate values.

The "hop-3 candidate QoS parameter" is at least one set of candidate values in the "hop-2 candidate QoS parameter".

Step 19: if the relay UE3 determines that there are available "hop-3 candidate QoS parameters", the relay UE3 transmits "hop-3 candidate QoS parameters" to the target UE.

If the relay UE3 judges that there is no "hop-3 candidate QoS parameter" available, the relay UE3 notifies the relay UE2 that "QoS segmentation procedure failure" has occurred.

After the target UE receives the "hop-3 candidate QoS parameters", the target UE may determine "hop-3 adopted QoS parameters" (accepted QoS for hop-3 in fig. 11). Wherein the adopted QoS parameter of hop-3 is a set of candidate values in the candidate QoS parameter of hop-3.

Step 20: the target UE will send the "hop-3 adopted QoS parameters" to the relay UE3.

After the relay UE3 receives the "hop-3 adopted QoS parameters", the relay UE3 may determine "hop-2 adopted QoS parameters" (accepted QoS for hop-2 in fig. 11).

Step 21: the relay UE3 transmits at least "hop-2 adopted QoS parameters" to the relay UE2.

After the relay UE2 receives the adopted QoS parameters in step 21, the relay UE2 determines "hop-1 adopted QoS parameters" (accepted QoS for hop-1 in fig. 11).

Step 22: the relay UE2 transmits at least "hop-1 adopted QoS parameters" to the relay UE1.

After the relay UE1 receives the adopted QoS parameters in step 22, it can determine "hop-0 adopted QoS parameters" (accepted QoS for hop-0 in fig. 11).

Step 23: the relay UE1 transmits at least "hop-0 adopted QoS parameters" to the source UE.

If the source UE receives one or more adopted QoS parameters in the step 23, the QoS segmentation flow is considered to be successfully completed; otherwise, the QoS segmentation flow is considered to fail.

If the source UE judges that the QoS segmentation flow fails, one of the following measures is adopted: releasing the end-to-end connection with the target UE; triggering an end-to-end QoS renegotiation with the target UE.

Optionally, the series of steps of QoS segmentation described above is implemented by PC5-RRC or PC5-S signaling procedures. In case of a PC5-RRC signaling procedure, the messages in steps 13, 15, 17 and 19 may be PC5 RRC reconfiguration messages, and the messages in steps 20 to 23 may be PC5 RRC reconfiguration complete messages or PC5 RRC reconfiguration failure messages. In the case of a PC5-S signaling flow, the messages in steps 13, 15, 17 and 19 may be PC5-S link modification messages, and the messages in steps 20 to 23 may be PC5-S link modification accept messages or PC5-S link modification reject messages.

Embodiment 3: each UE in a sidelink communication system is involved in deciding QoS parameter segmentation for its own upstream one-hop wireless link and downstream one-hop wireless link

In this embodiment 3, the source UE and the 1 st relay UE determine candidate QoS parameters for hop-0, the 1 st relay UE and the 2 nd relay UE participate in determining candidate QoS parameters for hop-1, and so on, and the S-th relay UE determines candidate QoS parameters for hop- (S).

Illustratively, s=3 is taken as an example, that is, a sidelink communication system includes a source UE, a relay UE1, a relay UE2, a relay UE3, and a target UE connected in sequence. The wireless link between the source UE and the relay UE1 is referred to as hop-0, the wireless link between the relay UE1 and the relay UE2 is referred to as hop-1, the wireless link between the relay UE2 and the relay UE3 is referred to as hop-2, and the wireless link between the relay UE3 and the target UE is referred to as hop-3. As shown in fig. 12, the QoS parameter segmentation method provided in the embodiment of the present application may include the following steps 24 to 35:

Step 24: the source UE determines the "hop-0 candidate QoS parameters" (QoS for hop-0 in fig. 12). Wherein the "hop-0 candidate QoS parameters" have at least one of the following characteristics:

From the "hop-0 candidate QoS parameters" and the end-to-end QoS parameters, "the" total QoS parameters between relay UE1 and target UE "(QoS for remaining hops in fig. 12) can be derived. The "total QoS parameters between relay UE1 and target UE" also consists of at least one set of candidate values. The end-to-end QoS parameters are determined by the traffic QoS requirements between the source UE and the target UE.

Step 25: the source UE transmits the "hop-0 candidate QoS parameters" and the "total QoS parameters between the relay UE1 and the target UE" to the relay UE1.

Step 26: relay UE1 determines the final candidate QoS parameter for "hop-0" and the candidate QoS parameter for "hop-1" (QoS for hop-1 in fig. 12). Wherein the "hop-1 candidate QoS parameters" have at least one of the following characteristics:

From the "final candidate QoS parameter of hop-0" and the "candidate QoS parameter of hop-1" and the "total QoS parameter between relay UE1 and target UE", the "total QoS parameter between relay UE2 and target UE" may be derived. The "total QoS parameters between relay UE2 and target UE" also consists of at least one set of candidate values.

Wherein, the relay UE1 determines that the final candidate QoS parameter of hop-0 is at least one candidate value of the candidate QoS parameter of hop-0 determined by selecting the source UE.

Step 27: if the relay UE1 determines that "hop-1 candidate QoS parameters" or "total QoS parameters between the relay UE2 and the target UE" are available, the relay UE1 transmits "hop-1 candidate QoS parameters" and "total QoS parameters between the relay UE2 and the target UE" to its own downstream node (i.e., relay UE 2).

Step 28: after the relay UE2 receives the "hop-1 candidate QoS parameters" and the "total QoS parameters between the relay UE2 and the target UE", it can determine the "hop-1 final candidate QoS parameters" and the "hop-2 candidate QoS parameters" (QoS for hop-2 in fig. 12). Wherein the "hop-2 candidate QoS parameters" have at least one of the following characteristics:

From the "final candidate QoS parameters for hop-1", "candidate QoS parameters for hop-2" and "total QoS parameters between relay UE2 and target UE", the "total QoS parameters between relay UE3 and target UE" may be derived. The "total QoS parameters between relay UE3 and target UE" also consists of at least one set of candidate values.

Wherein, the relay UE2 decides that the final candidate QoS parameter of "hop-1" is at least one candidate value of "hop-1 candidate QoS parameter" determined by selecting relay UE 1.

Step 28: if the relay UE2 determines that "hop-2 candidate QoS parameters" or "total QoS parameters between the relay UE3 and the target UE" are available, the relay UE2 transmits "hop-2 candidate QoS parameters" and "total QoS parameters between the relay UE3 and the target UE" to its own downstream node (i.e., relay UE 3).

Otherwise, the relay UE2 notifies itself to the upstream node (i.e., relay UE 1) that "QoS segmentation flow failure" has occurred.

Step 29: after the relay UE3 receives the "candidate QoS parameters for hop-2" and the "total QoS parameters between the relay UE3 and the target UE", it can determine the "final candidate QoS parameters for hop-2" and the "candidate QoS parameters for hop-3" (QoS for hop-3 in fig. 12). Wherein the "hop-3 candidate QoS parameters" have at least one of the following characteristics:

The "hop-3 candidate QoS parameters" are at least one set of candidate values of the "total QoS parameters between relay UE3 and target UE" determined by relay UE 2.

Wherein, the final candidate QoS parameter of hop-2 is determined by the relay UE3, and is at least one candidate value of the candidate QoS parameter of hop-2 determined by selecting the relay UE 2.

Step 30: if the relay UE3 determines that there are available "hop-3 candidate QoS parameters", the relay UE3 transmits "hop-3 candidate QoS parameters" to the target UE.

If the relay UE3 determines that there is no "hop-3 candidate QoS parameter" available, the relay UE3 notifies itself to the upstream node (i.e., relay UE 2) that "QoS segmentation flow failure" has occurred.

After the target UE receives the "hop-3 candidate QoS parameters", the target UE determines "hop-3 adopted QoS parameters" (accepted QoS for hop-3 in FIG. 12). Wherein the "hop-3 adopted QoS parameters" are a set of candidate values in the step "hop-3 candidate QoS parameters".

Step 31: the target UE will send the "hop-3 adopted QoS parameters" to the relay UE3.

So that the relay UE3 can receive the "hop-3 adopted QoS parameters". The relay UE3 may then determine "hop-2 adopted QoS parameters" (accepted QoS for hop-2 in fig. 12).

Step 32: the relay UE3 transmits at least "hop-2 adopted QoS parameters" to the relay UE2.

Thus, relay UE2 receives at least the "hop-2 adopted QoS parameters". The relay UE2 may then determine "hop-1's adopted QoS parameters" (accepted QoS for hop-1 in fig. 12).

Step 33: the relay UE2 transmits at least "hop-1 adopted QoS parameters" to the relay UE1.

So that relay UE1 can receive at least "hop-1's adopted QoS parameters", and then relay UE1 can determine "hop-0's adopted QoS parameters" (accepted QoS for hop-0 in fig. 12).

Step 34: the relay UE1 transmits at least "hop-0 adopted QoS parameters" to the source UE.

Step 35: if the source UE receives at least one adopted QoS parameter in the step 34, the QoS segmentation flow is considered to be successfully completed; otherwise, the QoS segmentation flow is considered to fail.

Optionally, the series of steps of QoS segmentation described above is implemented by PC5-RRC or PC5-S signaling procedures. In case of a PC5-RRC signaling procedure, the messages in steps 25, 27, 29, 31 may be PC5 RRC reconfiguration messages and the messages in steps 32 to 35 may be PC5 RRC reconfiguration complete messages or PC5 RRC reconfiguration failure messages. In case of a PC5-S signaling procedure, the messages in steps 25, 27, 29, 31 may be PC5-S link modification messages and the messages in steps 32 to 35 may be PC5-S link modification accept messages or PC5-S link modification reject messages.

According to the QoS parameter segmentation method provided by the embodiment of the application, the execution main body can be the QoS parameter segmentation device. In the embodiment of the present application, a QoS parameter splitting device is described by taking a QoS parameter splitting method performed by a QoS parameter splitting device as an example.

The embodiment of the present application further provides a QoS parameter splitting apparatus, fig. 13 is a schematic diagram of a possible structure of the QoS parameter splitting apparatus provided in the embodiment of the present application, as shown in fig. 13, where the QoS parameter splitting apparatus 130 may include: a receiving module 131, a determining module 132, and a transmitting module 133; the receiving module 131 is configured to receive a first QoS parameter sent by a first UE, where the first UE is a UE connected upstream of the QoS parameter splitting device 130 by one hop, and the first QoS parameter includes a QoS parameter between the first UE and a target UE; the determining module 132 is configured to determine a second QoS parameter according to the first QoS parameter received by the receiving module 131; the sending module 133 is configured to send the second QoS parameter determined by the determining module 132 to a second UE, where the second UE is a UE connected downstream of the QoS parameter splitting apparatus 130 by one hop; wherein the second QoS parameters include QoS parameters between the QoS parameter segmentation means 130 and the target UE; the source UE and the target UE perform sidelink communication through the QoS parameter segmentation apparatus 130.

In a possible implementation manner, the determining module 132 is specifically configured to determine the second QoS parameter according to the first QoS parameter and a first candidate QoS parameter, where the first candidate QoS parameter is a candidate QoS parameter corresponding to a radio link between the first UE and the QoS parameter segmentation device 130, and the first candidate QoS parameter is determined according to the first QoS parameter.

In a possible implementation manner, the first QoS parameter includes the first candidate QoS parameter and the second QoS parameter.

In a possible implementation manner, the first candidate QoS parameter includes at least one set of first candidate values, and the second QoS parameter includes at least one set of second candidate values; each set of first candidate values corresponds to one or more sets of second candidate values in the at least one set of second candidate values; wherein, a parameter value of the first QoS parameter includes one candidate value in each set of first candidate values and a candidate value corresponding to the candidate value in the first candidate values in the second candidate values.

In a possible implementation manner, in a case that the first UE is a source UE, the first QoS parameter is a target QoS parameter, where the target QoS parameter corresponds to a traffic QoS requirement of a sidelink communication between the source UE and the target UE.

In a possible implementation manner, the first QoS parameters include a first candidate QoS parameter and a third QoS parameter, where the first candidate QoS parameter is a candidate QoS parameter corresponding to a radio link between the first UE and the QoS parameter segmentation device 130, and the third QoS parameter is a QoS parameter between the QoS parameter segmentation device 130 and the target UE;

the determining module 132 is specifically configured to determine the second QoS parameter according to at least the third QoS parameter;

wherein the second QoS parameters include: the QoS parameter segmentation device 130 is configured to segment candidate QoS parameters corresponding to a radio link between the second UE and the target UE.

In a possible implementation manner, the determining module 132 is specifically configured to perform a selection process on the first candidate QoS parameter, and determine the second QoS parameter according to the third QoS parameter and the selected first candidate QoS parameter.

In a possible implementation, the third QoS parameter includes: the QoS parameter segmentation means 130 is configured to segment candidate QoS parameters corresponding to a radio link between the second UE;

QoS parameters between the second UE and the target UE.

In a possible implementation manner, the source UE and the target UE perform sidelink communication through a plurality of relay UEs, and the plurality of relay UEs include the QoS parameter splitting apparatus 130.

In a possible implementation manner, the sending module 133 is specifically configured to send the second QoS parameter to the second UE when the target condition is met; wherein the target condition includes at least one of:

the wireless link between the first UE and the QoS parameter partitioning means 130 has candidate QoS parameters available;

there are QoS parameters available between the QoS parameter partitioning means 130 and the target UE.

In a possible implementation manner, the sending module 133 is further configured to send a notification message to the first UE, where the target condition is not met, where the notification message is used to notify the first UE that the QoS segmentation procedure fails.

In a possible implementation manner, the receiving module 131 is further configured to receive, after the sending module 133 sends the second QoS parameters to the second UE, at least one set of first adopted QoS parameters sent by the second UE, where each set of first adopted QoS parameters is: an adopted QoS parameter for a one-hop wireless link of at least one-hop wireless links, the at least one-hop wireless link comprising each-hop wireless link between the QoS parameter partitioning means 130 and the target UE;

The determining module 132 is further configured to determine a set of second adopted QoS parameters according to the at least one set of first adopted QoS parameters and the first QoS parameters received by the receiving module 131, where the set of second adopted QoS parameters is adopted QoS parameters of the wireless link between the first UE and the QoS parameter splitting device 130;

the sending module 133 is further configured to send at least one set of third adopted QoS parameters to the first UE, where each set of third adopted QoS parameters includes any one of the following: a set of first adopted QoS parameters of the at least one set of first adopted QoS parameters, and the set of second adopted parameters.

In one possible implementation, the at least one set of first adopted QoS parameters includes: the QoS parameter partitioning means 130 and the QoS parameters adopted for each hop wireless link between the target UEs;

the determining module 132 is specifically configured to perform segmentation processing on the first QoS parameter and a fourth QoS parameter, so as to obtain the set of second adopted QoS parameters, where the fourth QoS parameter is composed of the at least one set of first adopted QoS parameters.

In a possible implementation manner, at least one set of the first adopted QoS parameters includes: the QoS parameter partitioning means 130 and the second UE employ QoS parameters for the wireless link;

The determining module 132 is specifically configured to determine, according to the at least one set of first adopted QoS parameters, the set of second adopted QoS parameters from the first candidate QoS parameters;

wherein the first candidate QoS parameter is a candidate QoS parameter corresponding to a radio link between the first UE and the QoS parameter segmentation device 130, the first candidate QoS parameter is determined by a third UE according to the first QoS parameter, and the third UE includes at least one of the following: the first UE, the QoS parameter partitioning means 130.

In the QoS parameter segmentation method provided in the embodiment of the present application, since the QoS parameter segmentation device may receive the QoS parameter between the first UE and the target UE, which is sent by the first UE, the first relay UE may further determine the QoS parameter between the first relay UE and the target UE, so that multiple UEs in the sidelink communication system may participate in the negotiation of end-to-end QoS parameter segmentation, thereby improving the segmentation accuracy of the QoS parameter, and finally meeting the service QoS requirement between the source UE and the target UE.

The embodiment of the present application further provides a QoS parameter splitting apparatus, fig. 14 is a schematic diagram of a possible structure of the QoS parameter splitting apparatus provided in the embodiment of the present application, and as shown in fig. 14, the QoS parameter splitting apparatus 140 may include: a determining module 141 and a transmitting module 142; the determining module 141 is configured to determine a fifth QoS parameter according to the target QoS parameter; the sending module 142 is configured to send the fifth QoS parameter determined by the determining module 141 to a second relay UE, where the second relay UE is a relay UE connected downstream of the QoS parameter splitting apparatus 140 by one hop; wherein the target QoS parameter is determined according to a traffic QoS requirement of the sidelink communication between the QoS parameter splitting device 140 and the target UE, and the fifth QoS parameter includes: the QoS parameter segmentation device 140 is configured to segment candidate QoS parameters corresponding to a radio link between a second relay UE and the target UE.

In a possible implementation manner, the QoS parameter splitting apparatus 140 further includes: a receiving module and a communication module;

the receiving module is configured to receive at least one set of fourth adopted QoS parameters sent by the second relay UE after the sending module 142 sends the fifth QoS parameters to the second relay UE, where the at least one set of fourth adopted QoS parameters includes: the QoS parameter partitioning means 140 adapts QoS parameters for at least one hop wireless link between the target UE.

In a possible implementation, the receiving module is further configured to, after the sending module 142 sends the fifth QoS parameter to the second relay UE,

and receiving a target notification message sent by the second relay UE, where the target notification message is used to notify the QoS parameter segmentation device 140 that the QoS segmentation procedure fails.

In a possible implementation manner, the QoS parameter splitting apparatus 140 further includes a processing module, where the processing module is configured to release an end-to-end connection with the target UE and/or trigger a QoS parameter renegotiation with the target UE after the receiving module receives the target notification message sent by the second relay UE.

In the QoS parameter splitting apparatus provided in the embodiment of the present application, since the QoS parameter splitting apparatus may determine a fifth QoS parameter between the second relay UE and the target UE according to the QoS parameter between the QoS parameter splitting apparatus and the target UE, it may be ensured that the fifth QoS parameter meets the requirement of the QoS parameter splitting apparatus, so that the accuracy of splitting the QoS parameter may be improved, and finally, the service QoS requirement between the source UE and the target UE may be satisfied.

The embodiment of the present application further provides a QoS parameter splitting apparatus, fig. 15 is a schematic diagram of a possible structure of the QoS parameter splitting apparatus provided in the embodiment of the present application, and as shown in fig. 15, the QoS parameter splitting apparatus 150 may include: a receiving module 151, a determining module 152, and a transmitting module 153; the receiving module 151 is configured to receive a sixth QoS parameter sent by a third relay UE, where the third relay UE is a relay UE connected upstream of the QoS parameter splitting apparatus 150 in a one-hop manner, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the QoS parameter splitting apparatus 150; the determining module 152 is configured to determine an adopted QoS parameter of the wireless link according to the sixth QoS parameter received by the receiving module 151; the sending module 153 is configured to send the adopted QoS parameter determined by the determining module 152 to the third relay UE.

In one possible implementation, the candidate QoS parameters are determined by at least one of: the third relay UE, the QoS parameter segmentation device 150.

In the QoS parameter splitting apparatus provided in the embodiment of the present application, since the QoS parameter splitting apparatus may be configured to determine, according to the candidate QoS parameter, the adopted QoS parameter of the wireless link, where the candidate QoS parameter corresponds to the wireless link between the third relay UE and the QoS parameter splitting apparatus, and the QoS parameter is sent by the third relay UE, the adopted QoS parameter of the wireless link may meet the requirement of the QoS parameter splitting apparatus, thereby improving the accuracy of splitting the QoS parameter, and finally meeting the service QoS requirement between the source UE and the target UE.

The QoS parameter dividing apparatus in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The QoS parameter segmentation apparatus provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 to 12, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The embodiment of the present application further provides a communication device 5000, as shown in fig. 16, including a processor 5001 and a memory 5002, where the memory 5002 stores a program or an instruction that can be executed on the processor 5001, for example, when the communication device 5000 is a first relay UE, the program or the instruction is executed by the processor 5001 to implement each step executed by the first relay UE in the foregoing method embodiment, and the same technical effect can be achieved, so that repetition is avoided and details are not repeated herein; or when the communication device 5000 is a source UE, the program or the instruction when executed by the processor 5001 implements each step executed by the source UE in the above method embodiment, and the same technical effect can be achieved, so that repetition is avoided, and no further description is given here; or, when the communication device 5000 is the target UE, the program or the instruction implements each step executed by the target UE in the above method embodiment when executed by the processor 5001, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the processor is used for determining a second QoS parameter according to the first QoS parameter, the communication interface is used for receiving the first QoS parameter sent by a first UE, the first UE is the UE connected with the upstream one-hop of the terminal communication equipment, the first QoS parameter comprises the QoS parameter between the first UE and a target UE, and the second QoS parameter comprises the QoS parameter between the communication equipment and the target UE; the source UE and the target UE carry out sidelink communication through communication equipment; the communication device embodiment corresponds to the first relay UE side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the communication device embodiment and can achieve the same technical effect.

Or the processor is used for determining a fifth QoS parameter according to the target QoS parameter; the communication interface is used for sending a fifth QoS parameter to the second relay UE, wherein the second relay UE is a relay UE connected with the downstream one-hop of the communication equipment; the target QoS parameter is determined according to a traffic QoS requirement of a sidelink communication between the communication device and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to a wireless link between a communication device and a second relay UE, the QoS parameters between the second relay UE and the target UE; the communication device embodiment corresponds to the source UE side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the communication device embodiment and can achieve the same technical effect.

Or, the communication interface is configured to receive a sixth QoS parameter sent by a third relay UE, where the third relay UE is a relay UE connected upstream by one hop of the communication device, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the communication device; a processor configured to determine an adopted QoS parameter of a wireless link between the third relay UE and the communication device according to a sixth QoS parameter; the communication interface is further used for sending the adopted QoS parameters to the third relay UE; the communication device embodiment corresponds to the target UE side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the communication device embodiment and can achieve the same technical effect.

Specifically, fig. 17 is a schematic diagram of a hardware structure of a communication device implementing an embodiment of the present application. As shown in fig. 17, communication device 7000 includes, but is not limited to: at least some of the components of the radio frequency unit 7001, the network module 7002, the audio output unit 7003, the input unit 7004, the sensor 7005, the display unit 7006, the user input unit 7007, the interface unit 7008, the memory 7009, the processor 7010, and the like.

Those skilled in the art will appreciate that the communication device 7000 may further include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 7010 by a power management system to perform functions such as managing charging, discharging, and power consumption by the power management system. The communication device structure shown in fig. 17 does not constitute a limitation of the communication device, and the communication device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 7004 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 7006 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 7007 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 7001 may transmit the downlink data to the processor 7010 for processing; in addition, the radio frequency unit 7001 may send uplink data to the network side device. In general, radio frequency units 7001 include, but are not limited to, antennas, amplifiers, transceivers, couplers, low noise amplifiers, diplexers, and the like.

The memory 7009 may be used to store software programs or instructions and various data. The memory 7009 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 7009 may include volatile memory or nonvolatile memory, or the memory 7009 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 7010 may include one or more processing units; the processor 7010 optionally integrates an application processor that primarily handles operations involving an operating system, user interfaces, applications, etc., and a modem processor that primarily handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 7010.

When the communication device is the first relay UE in the above method embodiment, the radio frequency unit 7001 is configured to receive a first QoS parameter sent by the first UE, where the first UE is a UE connected by one hop upstream of the communication device, and the first QoS parameter includes a QoS parameter between the first UE and a target UE; the processor 7010 is configured to determine a second QoS parameter according to the first QoS parameter received by the radio frequency unit 7001; the radio frequency unit 7001 is configured to send the second QoS parameter determined by the processor 7010 to a second UE, where the second UE is a UE connected downstream by one hop of the communication device; wherein the second QoS parameter comprises a QoS parameter between the communication device and the target UE; and the source UE and the target UE are communicated with each other through a secondary link by communication equipment.

In the communication device provided in the embodiment of the present application, since the communication device may receive the QoS parameter between the first UE and the target UE, which is sent by the first UE, the communication device may further determine the QoS parameter between the communication device and the target UE, so that a plurality of UEs in the sidelink communication system may participate in the negotiation of end-to-end QoS parameter segmentation, thereby improving the accuracy of segmentation of the QoS parameter, and finally meeting the service QoS requirement between the source UE and the target UE.

Wherein, when the communication device is the source UE in the above method embodiment, the processor 7010 is configured to determine a fifth QoS parameter according to the target QoS parameter;

a radio frequency unit 7001, configured to send the fifth QoS parameter determined by the processor 7010 to a second relay UE, where the second relay UE is a relay UE connected downstream by one hop of the communication device;

wherein the target QoS parameter is determined according to a traffic QoS requirement of a sidelink communication between the communication device and the target UE, and the fifth QoS parameter comprises: candidate QoS parameters corresponding to a wireless link between a communication device and a second relay UE, the QoS parameters between the second relay UE and the target UE.

In the communication device provided in the embodiment of the present application, since the communication device may determine the fifth QoS parameter between the second relay UE and the target UE according to the QoS parameter between the communication device and the target UE, it may be ensured that the fifth QoS parameter meets the QoS requirement of the communication device, so that the accuracy of segmentation of the QoS parameter may be improved, and finally the service QoS requirement between the source UE and the target UE may be satisfied.

When the communication device is the target UE in the above method embodiment, the radio frequency unit 7001 is configured to receive a sixth QoS parameter sent by a third relay UE, where the third relay UE is a relay UE connected upstream of the communication device in a one-hop manner, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the communication device;

the processor 7010 is configured to determine an adopted QoS parameter of the wireless link according to the sixth QoS parameter received by the radio frequency unit 7001; the radio frequency unit 7001 is configured to send the adopted QoS parameter determined by the processor 7010 to the third relay UE.

In the communication device provided in the embodiment of the present application, since the communication device may send, by using the third relay UE, a candidate QoS parameter corresponding to a wireless link between the third relay UE and the communication device, and determine, according to the candidate QoS parameter, an adopted QoS parameter of the wireless link, so that the adopted QoS parameter of the wireless link may be ensured to meet the requirement of the communication device, thereby improving the accuracy of segmentation of the QoS parameter, and finally meeting the service QoS requirement between the source UE and the target UE.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the foregoing QoS parameter segmentation method embodiment are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, implementing each process of the QoS parameter segmentation method embodiment, and achieving the same technical effect, so as to avoid repetition, and no redundant description is provided herein.

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

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a nonvolatile storage medium, and the computer program/program product is executed by at least one processor to implement each process of the QoS parameter segmentation method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a sidelink communication system, which comprises: the method comprises a source UE, a relay UE and a target UE, wherein the source UE can be used for executing steps executed by the source UE in the method embodiments, the relay UE can be used for executing steps executed by the first relay UE in the method embodiments, and the target UE is used for executing steps executed by the target UE in the method embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method for partitioning quality of service QoS parameters, comprising:

a first relay User Equipment (UE) receives a first QoS parameter sent by a first UE, wherein the first UE is the UE connected upstream of the first relay UE by one hop, and the first QoS parameter comprises the QoS parameter between the first UE and a target UE;

the first relay UE determines a second QoS parameter according to the first QoS parameter;

the first relay UE sends the second QoS parameter to a second UE, wherein the second UE is connected with the downstream of the first relay UE in a one-hop manner;

wherein the second QoS parameters include QoS parameters between the first relay UE and the target UE;

and the source UE and the target UE carry out sidelink communication through the first relay UE.

2. The method of claim 1, wherein the first relay UE determining a second QoS parameter from the first QoS parameter comprises:

the first relay UE determines the second QoS parameter according to the first QoS parameter and a first candidate QoS parameter, wherein the first candidate QoS parameter is a candidate QoS parameter corresponding to a wireless link between the first UE and the first relay UE, and the first candidate QoS parameter is determined according to the first QoS parameter.

3. The method of claim 2, wherein the first QoS parameter comprises the first candidate QoS parameter and the second QoS parameter.

4. A method according to claim 3, wherein the first candidate QoS parameters comprise at least one set of first candidate values and the second QoS parameters comprise at least one set of second candidate values;

each set of first candidate values corresponds to one or more sets of second candidate values in the at least one set of second candidate values;

wherein, a parameter value of the first QoS parameter includes one candidate value in each set of first candidate values and a candidate value corresponding to the candidate value in the first candidate values in the second candidate values.

5. The method according to any of claims 2 to 4, wherein in case the first UE is a source UE, the first QoS parameter is a target QoS parameter corresponding to a traffic QoS requirement of a sidelink communication between the source UE and the target UE.

6. The method according to claim 1, wherein the first QoS parameters include a first candidate QoS parameter and a third QoS parameter, the first candidate QoS parameter being a candidate QoS parameter corresponding to a radio link between the first UE and the first relay UE, the third QoS parameter being a QoS parameter between the first relay UE and the target UE;

The first relay UE determining a second QoS parameter according to the first QoS parameter, including:

the first relay UE determines the second QoS parameter at least according to the third QoS parameter;

wherein the second QoS parameters include: candidate QoS parameters corresponding to a radio link between the first relay UE and the second UE, qoS parameters between the second UE and the target UE.

7. The method of claim 6, wherein the first relay UE determining the second QoS parameter based at least on the third QoS parameter comprises:

and the first relay UE performs selection processing on the first candidate QoS parameters and determines the second QoS parameters according to the third QoS parameters and the selected first candidate QoS parameters.

8. The method according to claim 6 or 7, wherein the third QoS parameter comprises:

candidate QoS parameters corresponding to a wireless link between the first relay UE and the second UE;

QoS parameters between the second UE and the target UE.

9. The method of claim 1, wherein the source UE and the target UE are in sidelink communication via a plurality of relay UEs, including the first relay UE.

10. The method of claim 1, wherein the first relay UE transmitting the second QoS parameters to a second UE comprises:

the first relay UE sends the second QoS parameter to the second UE under the condition that a target condition is met;

wherein the target condition includes at least one of:

a wireless link between the first UE and the first relay UE has available candidate QoS parameters;

there are available QoS parameters between the first relay UE and the target UE.

11. The method according to claim 10, wherein the method further comprises:

and under the condition that the target condition is not met, the first relay UE sends a notification message to the first UE, wherein the notification message is used for notifying the first UE that the QoS segmentation flow fails.

12. The method of claim 1, 2, 3, 4, 6, or 7, wherein after the first relay UE transmits the second QoS parameter to the second UE, the method further comprises:

the first relay UE receives at least one set of first adopted QoS parameters sent by the second UE, and each set of first adopted QoS parameters is as follows: an adopted QoS parameter for a one-hop wireless link of at least one-hop wireless links, the at least one-hop wireless link comprising each-hop wireless link between the first relay UE and the target UE;

The first relay UE determines a set of second adopted QoS parameters according to the at least one set of first adopted QoS parameters and the first QoS parameters, wherein the set of second adopted QoS parameters are adopted QoS parameters of a wireless link between the first UE and the first relay UE;

the first relay UE sends at least one set of third adopted QoS parameters to the first UE, each set of third adopted QoS parameters comprising any one of: a set of first adopted QoS parameters of the at least one set of first adopted QoS parameters, and the set of second adopted parameters.

13. The method of claim 12, wherein the at least one set of first adopted QoS parameters comprises: an adopted QoS parameter for each hop wireless link between the first relay UE and the target UE;

the first relay UE determining a set of second adopted QoS parameters according to the at least one set of first adopted QoS parameters and the first QoS parameters, including:

and the first relay UE executes segmentation processing on the first QoS parameters and fourth QoS parameters to obtain the set of second adopted QoS parameters, wherein the fourth QoS parameters consist of the at least one set of first adopted QoS parameters.

14. The method of claim 12, wherein the at least one set of first adopted QoS parameters comprises at least: an adopted QoS parameter of a wireless link between the first relay UE and the second UE;

the first relay UE determines the set of second adopted QoS parameters from first candidate QoS parameters according to the at least one set of first adopted QoS parameters;

15. A QoS parameter segmentation method, comprising:

the source UE determines a fifth QoS parameter according to the target QoS parameter;

the source UE sends the fifth QoS parameter to a second relay UE, wherein the second relay UE is a relay UE connected with a downstream one-hop of the source UE;

wherein the target QoS parameter is determined according to a traffic QoS requirement of a sidelink communication between the source UE and the target UE, and the fifth QoS parameter comprises: candidate QoS parameters corresponding to a wireless link between the source UE and a second relay UE, qoS parameters between the second relay UE and the target UE.

16. The method of claim 15, wherein after the source UE sends the fifth QoS parameters to the second relay UE, the method further comprises:

the source UE receives at least one set of fourth adopted QoS parameters sent by the second relay UE, where the at least one set of fourth adopted QoS parameters includes: an adopted QoS parameter for at least one hop wireless link between the source UE and the target UE.

17. The method of claim 15, wherein after the source UE sends the fifth QoS parameters to the second relay UE, the method further comprises:

and the source UE receives a target notification message sent by the second relay UE, wherein the target notification message is used for notifying the source UE that the QoS segmentation process fails.

18. The method of claim 17, wherein after the source UE receives the target notification message sent by the second relay UE, the method further comprises:

the source UE releases the end-to-end connection with the target UE and/or triggers a QoS parameter renegotiation with the target UE.

19. A QoS parameter segmentation method, comprising:

the method comprises the steps that a target UE receives a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected with an upstream one-hop of the target UE, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the target UE;

The target UE determines the adopted QoS parameters of the wireless link according to the sixth QoS parameters;

the target UE sends the adopted QoS parameters to the third relay UE.

20. A QoS parameter segmentation apparatus, comprising: the device comprises a receiving module, a determining module and a sending module;

the receiving module is configured to receive a first QoS parameter sent by a first UE, where the first UE is a UE connected upstream of the QoS parameter splitting device by one hop, and the first QoS parameter includes a QoS parameter between the first UE and a target UE;

the determining module is configured to determine a second QoS parameter according to the first QoS parameter received by the receiving module;

the sending module is configured to send the second QoS parameter determined by the determining module to a second UE, where the second UE is a UE connected downstream of the QoS parameter splitting device in a one-hop manner;

wherein the second QoS parameters include QoS parameters between the QoS parameter segmentation device and the target UE;

and the source UE and the target UE carry out sidelink communication through the QoS parameter segmentation device.

21. The apparatus according to claim 20, wherein the determining module is specifically configured to determine the second QoS parameter according to the first QoS parameter and a first candidate QoS parameter, where the first candidate QoS parameter is a candidate QoS parameter corresponding to a radio link between the first UE and the QoS parameter splitting apparatus, and the first candidate QoS parameter is determined according to the first QoS parameter.

22. The apparatus of claim 20 wherein the first QoS parameters include a first candidate QoS parameter and a third QoS parameter, the first candidate QoS parameter being a candidate QoS parameter for a radio link between the first UE and the QoS parameter segmentation apparatus, the third QoS parameter being a QoS parameter between the QoS parameter segmentation apparatus and the target UE;

the determining module is specifically configured to determine the second QoS parameter according to at least the third QoS parameter;

wherein the second QoS parameters include: and the QoS parameter segmentation device and the candidate QoS parameter corresponding to the wireless link between the second UE and the target UE.

23. The apparatus of claim 22, wherein the determining module is configured to perform a selection process on the first candidate QoS parameters, and determine the second QoS parameters based on the third QoS parameters and the selected first candidate QoS parameters.

24. The apparatus according to claim 20, wherein the sending module is specifically configured to send the second QoS parameter to the second UE if a target condition is met;

Wherein the target condition includes at least one of:

a wireless link between the first UE and the QoS parameter partitioning means has candidate QoS parameters available;

there are available QoS parameters between the QoS parameter partitioning means and the target UE.

25. The apparatus of claim 24, wherein the means for sending is further configured to send a notification message to the first UE if the target condition is not met, the notification message being configured to notify the first UE that the QoS segmentation procedure failed.

26. The apparatus of any one of claims 20 to 25, wherein the receiving module is further configured to receive at least one set of first adopted QoS parameters sent by the second UE after the sending module sends the second QoS parameters to the second UE, each set of first adopted QoS parameters being: an adopted QoS parameter for a one-hop wireless link of at least one-hop wireless links, the at least one-hop wireless link comprising each-hop wireless link between the QoS parameter partitioning means and the target UE;

the determining module is further configured to determine a set of second adopted QoS parameters according to the at least one set of first adopted QoS parameters and the first QoS parameters received by the receiving module, where the set of second adopted QoS parameters is a adopted QoS parameter of a wireless link between the first UE and the QoS parameter splitting device;

The sending module is further configured to send at least one set of third adopted QoS parameters to the first UE, where each set of third adopted QoS parameters includes any one of the following: a set of first adopted QoS parameters of the at least one set of first adopted QoS parameters, and the set of second adopted parameters.

27. The apparatus of claim 26, wherein the at least one first set of adopted QoS parameters comprises: the QoS parameter segmentation device and the target UE adopt QoS parameters of each hop wireless link between the QoS parameter segmentation device and the target UE;

the determining module is specifically configured to perform segmentation processing on the first QoS parameter and a fourth QoS parameter, to obtain the set of second adopted QoS parameters, where the fourth QoS parameter is composed of the at least one set of first adopted QoS parameters.

28. The apparatus of claim 26, wherein the at least one set of first adopted QoS parameters comprises at least: the QoS parameter segmentation device and the second UE adopt QoS parameters of a wireless link;

the determining module is specifically configured to determine, according to the at least one set of first adopted QoS parameters, the set of second adopted QoS parameters from the first candidate QoS parameters;

the first candidate QoS parameter is a candidate QoS parameter corresponding to a wireless link between the first UE and the QoS parameter segmentation device, the first candidate QoS parameter is determined by a third UE according to the first QoS parameter, and the third UE includes at least one of the following: the first UE, the QoS parameter partitioning means.

29. A QoS parameter partitioning apparatus, the QoS parameter partitioning apparatus may comprise: a determining module and a transmitting module;

the determining module is used for determining a fifth QoS parameter according to the target QoS parameter;

the sending module is configured to send the fifth QoS parameter determined by the determining module to a second relay UE, where the second relay UE is a relay UE connected downstream of the QoS parameter splitting device by one hop;

wherein the target QoS parameter is determined according to a traffic QoS requirement of a sidelink communication between the QoS parameter splitting device and the target UE, and the fifth QoS parameter includes: and the QoS parameter segmentation device and the second relay UE are used for segmenting the candidate QoS parameter corresponding to the wireless link between the second relay UE and the target UE.

30. The apparatus of claim 29, wherein the QoS parameter partitioning means further comprises: a receiving module;

the receiving module is configured to receive at least one set of fourth adopted QoS parameters sent by the second relay UE after the sending module sends the fifth QoS parameters to the second relay UE, where the at least one set of fourth adopted QoS parameters includes: the QoS parameter partitioning means and the target UE employ QoS parameters for at least one hop wireless link.

31. The apparatus of claim 29, wherein the receiving module is further configured to receive a target notification message sent by the second relay UE after the sending module sends the fifth QoS parameter to the second relay UE, the target notification message being configured to notify the QoS parameter segmentation device that QoS segmentation procedure fails.

32. The apparatus of claim 31, wherein the QoS parameter partitioning apparatus further comprises a processing module, the processing module configured to release an end-to-end connection with the target UE and/or trigger a QoS parameter renegotiation with the target UE after the receiving module receives the target notification message sent by the second relay UE.

33. A QoS parameter segmentation apparatus, comprising: the device comprises a receiving module, a determining module and a sending module;

the receiving module is configured to receive a sixth QoS parameter sent by a third relay UE, where the third relay UE is a relay UE connected upstream of the QoS parameter splitting device in a one-hop manner, and the sixth QoS parameter is a candidate QoS parameter corresponding to a wireless link between the third relay UE and the QoS parameter splitting device;

The determining module is configured to determine an adopted QoS parameter of the wireless link according to the sixth QoS parameter received by the receiving module;

and the sending module is used for sending the adopted QoS parameters determined by the determining module to the third relay UE.

34. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the QoS parameter segmentation method of any one of claims 1 to 14; or implementing a QoS parameter partitioning method as claimed in any one of claims 15 to 18; or the step of implementing the QoS parameter segmentation method of claim 19.

35. A sidelink communication system comprising QoS parameter partitioning means as claimed in any one of claims 20 to 28, means as claimed in any one of claims 29 to 32 and QoS parameter partitioning means as claimed in claim 33.

36. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of any one of claims 1 to 19.