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

Abstract

The application discloses a QoS parameter segmentation method and device, a communication device, a communication system and a readable storage medium, and belongs to the technical field of communication. The QoS parameter segmentation method of the application embodiment comprises the following steps: a first relay user equipment (UE) receives a first QoS parameter sent by a first UE, the first UE is a UE connected with the first relay UE at one hop upstream, and the first QoS parameter comprises QoS parameters between the first UE and a target UE; the first relay UE determines second QoS parameters according to the first QoS parameter; the first relay UE sends the second QoS parameters to a second UE, the second UE is a UE connected with the first relay UE at one hop downstream; wherein the second QoS parameters comprise QoS parameters between the first relay UE and the target UE; and the source UE and the target UE perform sidelink communication through the first relay UE.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a QoS parameter segmentation method, apparatus, communication equipment, communication system, and readable storage medium. Background Technology

[0002] Currently, when a source user equipment (UE) needs to transmit data with a target UE, and the source UE has poor coverage, the source UE can find an end-to-end (UE to UE, U2U) relay UE (hereinafter referred to as relay UE) to relay the data. Generally speaking, the relay UE is open and can serve any source UE and target UE.

[0003] Specifically, the source UE sends the end-to-end Quality of Service (QoS) parameters between the source UE and the target UE to the relay UE. These end-to-end QoS parameters are determined by the service QoS requirements between the source UE and the target UE. The relay UE directly determines the QoS splitting of the end-to-end QoS parameters.

[0004] However, the above method is not applicable to multi-hop (multiple relay UE) scenarios. When the data transmission between the source UE and the target UE involves multiple relay UEs passing through in sequence, any one of the multiple relay UEs cannot know the radio link status of each hop in time, resulting in poor end-to-end QoS parameter segmentation performance. The actual transmission cannot meet the service QoS requirements between the source UE and the target UE. Summary of the Invention

[0005] This application provides a QoS parameter segmentation method, apparatus, communication device, communication system, and readable storage medium, which can solve the problem that the end-to-end QoS parameter segmentation performance is poor and the actual transmission cannot meet the service QoS requirements between the source UE and the target UE.

[0006] In a first aspect, a QoS parameter segmentation method is provided, applied to a first relay UE. The method includes: the first relay user equipment (UE) receiving a first QoS parameter sent by a first UE, wherein the first UE is a UE connected to the upstream of the first relay UE, and the first QoS parameter includes QoS parameters between the first UE and a target UE; the first relay UE determining a second QoS parameter based on the first QoS parameter; the first relay UE sending the second QoS parameter to a second UE, wherein the second UE is a UE connected to the downstream of the first relay UE; wherein the second QoS parameter includes QoS parameters between the first relay UE and the target UE; and the source UE and the target UE communicating via a secondary link through the first relay UE.

[0007] Secondly, a QoS parameter segmentation device is provided, comprising: a receiving module, a determining module, and a sending module. The receiving module receives a first QoS parameter sent by a first UE, the first UE being a UE connected to the upstream one-hop of the QoS parameter segmentation device, and the first QoS parameter includes QoS parameters between the first UE and a target UE. The determining module determines a second QoS parameter based on the first QoS parameter received by the receiving module. The sending module sends the second QoS parameter determined by the determining module to a second UE, the second UE being a UE connected to the downstream one-hop of the QoS parameter segmentation device. The second QoS parameter includes QoS parameters between the second UE and the target UE; the source UE and the target UE communicate via a secondary link through the second UE.

[0008] Thirdly, a QoS parameter segmentation method is provided, applied to a source UE. The method includes: the source UE determining a fifth QoS parameter based on a target QoS parameter; the source UE sending the fifth QoS parameter to a second relay UE, the second relay UE being a relay UE connected one hop downstream of the source UE; wherein the target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the source UE and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to the radio link between the source UE and the second relay UE, and QoS parameters between the second relay UE and the target UE.

[0009] Fourthly, a QoS parameter segmentation device is provided, comprising a determining module and a transmitting module. The determining module is used to determine a fifth QoS parameter based on a target QoS parameter; the transmitting module is used to transmit the fifth QoS parameter determined by the determining module to a second relay UE, the second relay UE being a relay UE connected one hop downstream of the QoS parameter segmentation device; wherein the target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the QoS parameter segmentation device and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to the radio link between the QoS parameter segmentation device and the second relay UE, and QoS parameters between the second relay UE and the target UE.

[0010] Fifthly, a QoS parameter segmentation method is provided, applied to a target UE. The method includes: the target UE receiving a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected one hop upstream of the target UE, and the sixth QoS parameter is a candidate QoS parameter corresponding to the radio link between the third relay UE and the target UE; the target UE determining the adopted QoS parameter of the radio link based on the sixth QoS parameter; and the target UE sending the adopted QoS parameter to the third relay UE.

[0011] In a sixth aspect, a QoS parameter segmentation device is provided, comprising: a receiving module, a determining module, and a transmitting module; the receiving module is configured to receive a sixth QoS parameter transmitted by a third relay UE, wherein the third relay UE is a relay UE connected to the upstream of the QoS parameter segmentation device, and the sixth QoS parameter is a candidate QoS parameter corresponding to the radio link between the third relay UE and the QoS parameter segmentation device; the determining module is configured to determine the adopted QoS parameter of the radio link based on the sixth QoS parameter received by the receiving module; and the transmitting module is configured to transmit the adopted QoS parameter determined by the determining module to the third relay UE.

[0012] In a seventh aspect, a communication device is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the methods of the first, third, or fifth aspects.

[0013] Eighthly, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a first QoS parameter sent by a first UE, the first UE being a UE connected to the upstream one-hop of the communication device, and the first QoS parameter including QoS parameters between the first UE and a target UE; the processor is used to determine a second QoS parameter based on the first QoS parameter, the second QoS parameter including QoS parameters between the communication device and the target UE; the source UE and the target UE communicate via a secondary link through the communication device.

[0014] A ninth aspect provides a communication device, including a processor and a communication interface, wherein the processor is configured to determine a fifth QoS parameter based on a target QoS parameter; the communication interface is configured to send the fifth QoS parameter to a second relay UE, the second relay UE being a relay UE connected downstream of the communication device; the target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the communication device and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to the radio link between the communication device and the second relay UE, and QoS parameters between the second relay UE and the target UE.

[0015] In a tenth aspect, a communication device is provided, including a processor and a communication interface. The communication interface is configured to receive a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected one hop upstream of the communication device, and the sixth QoS parameter is a candidate QoS parameter corresponding to the radio link between the third relay UE and the communication device. The processor is configured to determine the adopted QoS parameter of the radio link between the third relay UE and the communication device based on the sixth QoS parameter. The communication interface is further configured to send the adopted QoS parameter to the third relay UE.

[0016] In the eleventh aspect, a secondary link communication system is provided, including a source UE, a relay UE, and a target UE. The source UE can be used to perform the steps of the QoS parameter segmentation method as described in the third aspect, the relay UE can be used to perform the steps of the QoS parameter segmentation method as described in the first aspect, and the target UE can be used to perform the steps of the QoS parameter segmentation method as described in the fifth aspect above.

[0017] In a twelfth aspect, a readable storage medium is provided on which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the methods of the first, third, or fifth aspects are implemented.

[0018] In a thirteenth aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the methods of the first, third, or fifth aspects.

[0019] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the method as described in the first, third, or fifth aspects.

[0020] In the embodiments of this application, since any UE (e.g., the first UE) in the secondary link communication system can send the QoS parameters between the first UE and the target UE to the UE connected to the downstream one-hop connection of the first UE (e.g., the first relay UE), the first relay UE can further determine the QoS parameters between the first relay UE and the target UE. In this way, multiple UEs in the secondary link communication system can participate in the negotiation of end-to-end QoS parameter segmentation, thereby improving the QoS parameter segmentation performance and ultimately meeting the service QoS requirements between the source UE and the target UE. Attached Figure Description

[0021] Figure 1 This is a block diagram of a secondary link communication system applicable to embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the secondary link communication process in a single-hop scenario;

[0023] Figure 3 This is one of the schematic diagrams of an end-to-end relay protocol stack in a single-hop relay scenario;

[0024] Figure 4 This is one of the flowcharts illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0025] Figure 5 This is a second flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0026] Figure 6 This is the third flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0027] Figure 7 This is the fourth flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0028] Figure 8 This is the fifth flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0029] Figure 9 This is the sixth flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0030] Figure 10 This is the seventh flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0031] Figure 11 This is the eighth flowchart illustrating the QoS parameter segmentation method provided in the embodiments of this application;

[0032] Figure 12 This is the ninth flowchart of the QoS parameter segmentation method provided in the embodiments of this application;

[0033] Figure 13 This is one of the structural schematic diagrams of the QoS parameter segmentation device provided in the embodiments of this application;

[0034] Figure 14 This is a second schematic diagram of the QoS parameter segmentation device provided in the embodiments of this application;

[0035] Figure 15 This is the third schematic diagram of the QoS parameter segmentation device provided in the embodiments of this application;

[0036] Figure 16 This is one of the structural schematic diagrams of the communication device provided in the embodiments of this application;

[0037] Figure 17 This is the second schematic diagram of the communication device provided in the embodiments of this application. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0039] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0040] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes NR systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) wireless communication systems. th Generation 6G communication system.

[0041] The following section will first explain some of the terms or terms used in the claims and description of this application.

[0042] 1. Introduction to Sidelink (SL)

[0043] Secondary links are also called side links, edge links, etc.

[0044] like Figure 1As shown, the Long Term Evolution (LTE) system supports secondary links starting from release 12. Secondary links are used for direct data transmission between UEs 11 without going through network-side device 12.

[0045] LTE SL is designed for specific public safety applications (such as emergency communications in disaster areas like fire scenes or earthquakes) or vehicle-to-everything (V2X) communications. V2X communications include various services, such as basic safety communications, advanced (autonomous) driving, platooning, sensor extension, and more. Because LTE SL only supports Broadcast (BC) communications, it is primarily used for basic safety communications. Advanced V2X communication services with stringent QoS requirements regarding latency and reliability will be supported by 5G NR SL.

[0046] 2. NR SL transmission format

[0047] NR SL transmission primarily uses several types of transmission (cast types): broadcast, multicast (group cast, GC), and unicast (unicast, UC). Unicast, as the name suggests, is a one-to-one transmission. Multicast is a one-to-many transmission. Broadcast is also a one-to-many transmission, but it does not have the concept of UEs belonging to the same group.

[0048] 3. Side-link mechanism based on relay UE (SL-based U2U Relay)

[0049] To achieve better coverage and lower power consumption for terminals, the NR system researches a relay mechanism based on the SL wireless air interface. Typical scenarios are as follows: Figure 2 As shown, the example is a single-hop relay (i.e., there is only one relay UE):

[0050] like Figure 2 As shown, the source UE needs to transmit data with the target UE, but due to poor coverage, an end-to-end relay UE is found as a relay. The relay UE and the source UE share a secondary link PC5 interface; the relay UE and the source UE also share a secondary link PC5 interface. Generally, the relay UE is open and can serve any source UE and target UE.

[0051] It is understandable that the source UE can also be called the remote UE, and the target UE can also be called the destination UE.

[0052] PC5 interface: This is the interface for interaction between vehicle modules, vehicle, roadside equipment, and people. It is the interface for direct device-to-device communication between UEs using V2X services.

[0053] It should be noted that, Figure 2 The above describes a single-hop relay scenario. In actual implementation, if it is a multi-hop relay scenario, there are more than one relay UE connecting the source UE and the target UE.

[0054] L2 U2U relay protocol stack

[0055] Figure 3 This is a schematic diagram of the 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 divided into two parts: the QoS parameters between the source UE and the relay UE, and the QoS parameters between the relay UE and the target UE.

[0056] PC5-RRC: Radio Resource Control protocol based on PC5 interface. RRC stands for Radio Resource Control.

[0057] PC5-PDCP: Packet Data Convergence Protocol based on the PC5 interface;

[0058] PC5-SRAP: SL relay adaptation protocol based on PC5 interface. The full English name of SRAP is SL (sidelink) Relay Adaptation Protocol.

[0059] PC5-RLC: A wireless link layer control protocol based on the PC5 interface. RLC stands for Radio Link Control.

[0060] PC5-MAC: A media access control protocol based on the PC5 interface. MAC stands for Media Access Control.

[0061] PC5-PHY: Physical layer protocol based on the PC5 interface. PHY stands for Physical.

[0062] The QoS parameter segmentation method, apparatus, communication equipment, communication system, and readable storage medium provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0063] The QoS parameter segmentation method based on a single relay UE (i.e., single-hop relay scenario) is illustrated below with examples of QoS parameter segmentation methods for Layer-3 and Layer-2 relay scenarios.

[0064] 1. The QoS parameter segmentation method for Layer 3 relay scenarios may include the following steps 5a to 5e:

[0065] Step 5a: The source UE sends the end-to-end QoS parameters to the relay UE. These end-to-end QoS parameters are determined by the service QoS requirements between the source UE and the target UE.

[0066] Step 5b: The relay UE receives and is responsible for QoS parameter segmentation, that is, segmenting the end-to-end QoS parameters into: {the first hop QoS parameters of the radio link between the source UE and the relay UE} + {the second hop QoS parameters of the radio link between the relay UE and the target UE}.

[0067] Step 5c: The relay UE sends the second-hop QoS parameters of the radio link between the relay UE and the target UE to the target UE.

[0068] Step 5d: The relay UE receives a response from the target UE for the second-hop QoS parameters of the radio link between the relay UE and the target UE.

[0069] Step 5e: The relay UE further sends a response to the source UE for the first hop QoS parameters of the radio link between the source UE and the relay UE.

[0070] After the above steps, the source UE begins service data transmission with the target UE.

[0071] 2. The QoS parameter segmentation method for Layer 2 relay scenarios may include the following steps 6a to 6f.

[0072] Step 6a: Establish an end-to-end connection between the source UE and the target UE, and determine the end-to-end QoS parameters during the connection establishment process. These end-to-end QoS parameters are determined by the service QoS requirements between the source UE and the target UE.

[0073] Steps 6b-6f: The core idea is the same as steps 5a-5e above. The main difference is that in the Layer 2 relay scenario, QoS segmentation needs to be initiated after an end-to-end connection is established between the Source UE and the target UE, while in the Layer 3 relay scenario, there is no concept of an end-to-end connection, and QoS parameter segmentation can be initiated from the beginning.

[0074] After the above steps, the source UE begins service data transmission with the target UE.

[0075] It can be seen that the relay UE directly determines the QoS parameters of the two wireless links.

[0076] The purpose of the QoS parameter segmentation method provided in this application is to support each UE in a relay link to participate in the QoS parameter segmentation process of at least one upstream and / or downstream radio link, so that each UE can segment the corresponding QoS parameters based on its own situation (e.g., upstream / downstream radio link quality, current resource pool congestion of each UE, etc.) to achieve the best QoS segmentation result. In particular, the QoS parameter segmentation method provided in this application also adds negotiation and selection based on multiple sets of candidate QoS parameters, as well as UE handling of "QoS segmentation failure", thus improving the QoS segmentation signaling process.

[0077] The QoS parameter segmentation method provided in this application is designed for relay scenarios based on the SL radio air interface, and mainly addresses the wireless QoS parameter segmentation method in this scenario. Specifically, it introduces signaling and procedures for multi-party QoS parameter negotiation among the source UE, at least one relay UE, and the target UE to determine how to segment end-to-end QoS parameters into hop-by-hop QoS parameters.

[0078] The QoS parameter segmentation method provided in this application supports multiple UEs (e.g., each UE) in a U2U relay link to participate in QoS segmentation negotiation, enabling UEs to combine their own circumstances (e.g., upstream / downstream wireless link quality, current resource pool congestion, etc.) to achieve the best QoS segmentation result and improve the service experience of secondary links.

[0079] This application provides a QoS parameter segmentation method. Figure 4 A flowchart illustrating the QoS parameter segmentation method provided in an embodiment of this application is shown, as follows: Figure 4 As shown, the QoS parameter segmentation method provided in this application embodiment may include the following steps 500 to 504.

[0080] Step 500: The first UE sends the first QoS parameters to the first relay UE.

[0081] Step 501: The first relay UE receives the first QoS parameters.

[0082] Among them, the first UE is the UE connected to the upstream of the first relay UE.

[0083] In this embodiment of the application, the first QoS parameter may include the QoS parameters between the first UE and the target UE.

[0084] It should be noted that the first OoS parameter may include the QoS parameters between the first UE and the target UE. In other words, the first QoS parameter is the total QoS parameters that can be occupied by all hops of radio links between the first UE and the target UE. Optionally, the first QoS parameter may include the unsegmented QoS parameters between the first UE and the target UE; or the first QoS parameter may include all QoS parameters obtained by segmenting the total QoS parameters between the first UE and the target UE.

[0085] In this embodiment, the first QoS parameter can be at least a portion of the target QoS parameters. For example, the target QoS parameters can be determined by the source UE based on the service QoS requirements of the secondary link communication between the source UE and the target UE.

[0086] It should be noted that in this application, the upstream hop can also be referred to as the previous hop. The definition of an upstream hop in this application is: the first UE adjacent to the source UE in the relay link is the UE connected by the upstream hop. For example, if the source UE is connected to the target UE through relay UE1, then the source UE is the upstream hop UE of relay UE1, and the link between the source UE and relay UE1 is simply referred to as the upstream hop. Another example is: source UE ——…—— relay UE1 —— relay UE2 ——…—— target UE, then for relay UE2, relay UE1 is the upstream hop UE, and the link between relay UE1 and relay UE2 is the upstream hop. The definition of a downstream hop in this application is: the first UE adjacent to the target UE in the relay link is the UE connected by the downstream hop. For example, if the source UE is connected to the target UE through relay UE1, then the target UE is the downstream UE of relay UE1, and the link between relay UE1 and the target UE is simply called the downstream hop; or, for another example, if the path is source UE ——…—— relay UE2 —— relay UE3 ——…—— target UE, then for relay UE2, relay UE3 is the downstream UE, and the link between relay UE2 and relay UE3 is the downstream hop.

[0087] Optionally, assuming the target QoS parameters include M parameter items, then both the first QoS parameters and the second QoS parameters include M parameter items, where M is a positive integer.

[0088] For example, the target QoS parameters should include at least one parameter item from at least one of the following dimensions: 1) to 4)

[0089] 1) QoS Identifier (PC5 5G QoS Identifier, PC5 5QI or PQI) parameter: This field indicates either the PQI for standardized PQI or non-standardized QoS parameters.

[0090] 2) Guaranteed Flow Bit Rate (GFBR) parameter: Indicates the guaranteed bit rate of the QoS stream. Unit: Kbit / s;

[0091] 3) Maximum Flow Bit Rate (MFBR) parameter, which represents the maximum bit rate of the GBR QoS flow. The unit is Kbit / s.

[0092] 4) Range parameter: This field represents the communication range parameter of the QoS flow, in meters.

[0093] Among them, 1) above is further subdivided into the following dimensions of parameter items:

[0094] Resource type; Priority level; Packet delay budget; Packet error rate; Averaging window; MaxDataBurstVolume.

[0095] Optionally, the first UE can be the source UE or the relay UE connected upstream of the first relay UE.

[0096] Step 502: The first relay UE determines the second QoS parameter based on the first QoS parameter.

[0097] In this embodiment of the application, the second QoS parameter may include the QoS parameters between the first relay UE and the target UE.

[0098] It should be noted that the second OoS parameter may include the total QoS parameters between the first relay UE and the target UE. In other words, the second QoS parameter is the total QoS parameters that all radio links between the first relay UE and the target UE can utilize.

[0099] For further details on the second QoS parameter, please refer to the relevant description of the first QoS parameter.

[0100] In this embodiment of the application, the first relay UE can perform segmentation processing on the first QoS parameter based on the first information to obtain the second QoS parameter, thereby achieving the best QoS segmentation decision.

[0101] Optionally, the first information may include at least one of the following: the link quality of the radio link between the first relay UE and the second UE (a UE connected one hop downstream of the first relay UE), the congestion level of the current resource pool of the first relay UE, and the QoS parameters that the upper layer of the first relay UE can accept. Here, "upper layer" generally refers to the protocol layer above the Access Stratum (AS) layer of the first relay UE, including the V2X (Vehicle-to-Everything) layer, the Proximity Service (ProSe) layer, the application layer, etc.

[0102] Step 502 will be explained in detail below.

[0103] One possible implementation is that any UE in the secondary link communication system participates in determining the QoS parameter allocation of its upstream one-hop radio link.

[0104] Alternatively, in one possible implementation, step 502 can be specifically implemented through step 502a as described below.

[0105] Step 502a: The first relay UE determines the second QoS parameter based on the first QoS parameter and the first candidate QoS parameter.

[0106] The first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the first relay UE, and the first candidate QoS parameter is determined based on the first QoS parameter.

[0107] Optionally, the first candidate QoS parameter can be obtained by segmenting the first QoS parameter by the first relay UE.

[0108] Optionally, the first QoS parameter may include a first candidate QoS parameter and a second QoS parameter. It can be understood that the values ​​of each parameter item of the first QoS parameter are composed of the values ​​of the first candidate QoS parameter and the values ​​of the second QoS parameter.

[0109] Optionally, 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 ​​from the at least one set of second candidate values.

[0110] The first QoS parameter can include a candidate value from each set of first candidate values ​​and a candidate value from the second candidate values ​​that corresponds to the candidate value in the first candidate values.

[0111] For example, consider a scenario where each set of candidate values ​​corresponds to a set of second candidate values. Taking the delay parameter (Packet DelayBudget, PDB) as an example, assuming the delay in the first QoS parameter is 100ms, then as shown in Table 1 below, the first candidate QoS parameter can include four sets of first candidate values: 20ms, 30ms, 50ms, and 80ms; correspondingly, the second QoS parameter can include four sets of second candidate values: 80ms, 70ms, 50ms, and 20ms.

[0112] Table 1

[0113]

[0114] Optionally, if the first UE is the source UE, the first QoS parameter can be the target QoS parameter, which corresponds to the service QoS requirements of the secondary link communication between the source UE and the target UE.

[0115] In one possible implementation, the source UE does not participate in the segmentation of the target QoS parameters, but directly sends the target QoS parameters to the relay UE connected one hop downstream of the source UE, which then segments the target QoS parameters.

[0116] In this embodiment, since the first relay UE can determine the second QoS parameter based on the first QoS parameter and the first candidate QoS parameter, the second QoS parameter can be prevented from exceeding the QoS parameter between the first UE and the target UE, thereby improving the accuracy of QoS parameter segmentation.

[0117] Another possible implementation is that in the secondary link communication system, each UE participates in determining the QoS parameter allocation of its downstream one-hop radio link.

[0118] Optionally, in another possible implementation, the first QoS parameter may include a first candidate QoS parameter and a third QoS parameter. The first candidate QoS parameter may be a candidate QoS parameter corresponding to the radio link between the first UE and the first relay UE, and the third QoS parameter may be a QoS parameter between the first relay UE and the target UE. Step 502 described above can be specifically implemented through step 502b below.

[0119] Step 502b: The first relay UE determines the second QoS parameter based at least on the third QoS parameter.

[0120] The second QoS parameter may include: candidate QoS parameters corresponding to the radio link between the first relay UE and the second UE (hereinafter referred to as the second candidate QoS parameter), and QoS parameters between the second UE and the target UE. The second UE is a UE connected one hop downstream of the first relay UE.

[0121] In this embodiment of the application, "QoS parameters between the second UE and the target UE" can be understood as the total QoS parameters that all radio links between the second UE and the target UE can occupy.

[0122] 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". In this case, the second QoS parameter may only include the second candidate QoS parameter.

[0123] In this embodiment, before sending the first QoS parameter to the first relay UE, the first UE can first segment the first QoS parameter to obtain a third QoS parameter and a first candidate QoS parameter; then, the third QoS parameter and the first candidate QoS parameter are sent to the first relay UE. That is, when the first relay UE sends the second QoS parameter to the second UE, it is actually sending to the second UE: the candidate QoS parameter corresponding to the radio link between the first relay UE and the second UE, and the QoS parameter between the second UE and the target UE.

[0124] It is understandable that the first UE can perform segmentation processing on the first QoS parameter based on the second information to obtain the first candidate QoS parameter and the third QoS parameter.

[0125] Optionally, the second information may include at least one of the following: the link quality of the radio link between the first UE and the first relay UE, the congestion level of the current resource pool of the first UE, and the QoS parameters that the upper layer of the AS layer of the first UE can accept.

[0126] The term "upper layer" generally refers to the protocol layers above the access layer of the first UE, including the V2X layer, ProSe layer, application layer, etc.

[0127] For other descriptions in step 502b, please refer to the relevant descriptions in step 502a above. To avoid repetition, they will not be repeated here.

[0128] In this embodiment, since the first relay UE can determine the candidate QoS parameters of the radio link between the first relay UE and the second relay UE, as well as the QoS parameters between the second UE and the target UE, based on the QoS parameters between the first relay UE and the target UE, that is, the first relay UE can participate in determining the candidate QoS parameters of the radio link one hop downstream of the first relay UE (i.e., the radio link between the first relay UE and the second UE), it can be ensured that the candidate QoS parameters of the radio link one hop downstream of the first relay UE meet the needs of the first relay UE, thereby improving the accuracy of QoS parameter segmentation.

[0129] Optionally, step 502b above can be implemented through step 502b1 below.

[0130] Step 502b1: The first relay UE selects the first candidate QoS parameter and determines the second QoS parameter based on the third QoS parameter and the selected first candidate QoS parameter.

[0131] It is understood that in step 502b1, the first relay UE not only participates in the determination of the candidate QoS parameters of its downstream one-hop radio link, but also participates in the determination of the candidate QoS parameters of its upstream one-hop radio link.

[0132] Optionally, assume that the first candidate QoS parameter includes N sets of first candidate values, and the third QoS parameter may include K sets of third candidate values, with each set of first candidate values ​​corresponding to one or more sets of third candidate values ​​from at least one set of third candidate values. A parameter value of the first QoS parameter may include one candidate value from each set of first candidate values ​​and the candidate value from the third set that corresponds to the candidate value in the first set of first candidate values, where N and K are both positive integers, and K is greater than or equal to N.

[0133] After receiving the first QoS parameter, the first relay UE can select P sets of first candidate values ​​from N sets of first candidate values ​​based on the third information to obtain the selected first candidate QoS parameter, where P is a positive integer less than or equal to N.

[0134] Then, the first relay UE can select H sets of third candidate values ​​from K sets of third candidate values ​​based on the selected P sets of first candidate values, and each set of first candidate values ​​in the P sets of first candidate values ​​corresponds to at least one set of third candidate values ​​in the H sets of third candidate values. Thus, the first relay UE can perform at least one segmentation process on each set of at least one set of third candidate values. After the segmentation process of the at least one set of third candidate values, the second QoS parameters can be obtained.

[0135] It is understood that the first relay UE performs a segmentation process on each of the at least one set of third candidate values ​​to obtain a set of fourth candidate values ​​in the second candidate QoS parameters; based on each set of third candidate values ​​and the set of fourth candidate values, a set of fifth candidate values ​​in the QoS parameters between the second UE and the target UE can be determined.

[0136] Optionally, the third information may include at least one of the following: the link quality of the radio link between the first UE and the first relay UE, the link quality of the radio link between the first UE and the second UE, the congestion level of the current resource pool of the first relay UE, and the QoS parameters that the upper layer of the AS layer of the first relay UE can accept.

[0137] Optionally, in this embodiment of the application, the third QoS parameter may include: candidate QoS parameters corresponding to the radio link between the first relay UE and the second UE; and QoS parameters between the second UE and the target UE.

[0138] It can be understood that the values ​​of each parameter item of the third QoS parameter are composed 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.

[0139] Step 503: The first relay UE sends the second QoS parameters to the second UE.

[0140] Step 504: The second UE receives the second QoS parameters.

[0141] In this embodiment of the application, the source UE and the target UE can communicate via a secondary link through a first relay UE.

[0142] Optionally, when the source UE and the target UE communicate via a secondary link through multiple relay UEs, the multiple relay UEs include the first relay UE.

[0143] Optionally, when the source UE and the target UE communicate via a secondary link through a relay UE, the second UE is the target UE;

[0144] When the source UE and the target UE communicate via a secondary link through multiple relay UEs, the second UE can be the target UE or a relay UE connected one hop downstream of the first relay UE.

[0145] Optionally, when the second UE is a relay UE, the second QoS parameter is used at least by the second UE to determine the QoS parameters between the second UE and the target UE (i.e., the total QoS parameters that can be occupied).

[0146] When the second UE is the target UE, the second QoS parameter is used by the target UE to determine the adoption QoS parameter of the radio link between the first relay UE and the target UE.

[0147] Optionally, step 503 above can be implemented through step 503a below.

[0148] Step 503a: If the target conditions are met, the first relay UE sends the second QoS parameters to the second UE;

[0149] The target condition may include at least one of the following: there are available candidate QoS parameters in the radio link between the first UE and the first relay UE; there are available QoS parameters between the first relay UE and the target UE.

[0150] In this embodiment, since the first relay UE only sends the second QoS parameter to the second UE when the target condition is met, that is, the first relay UE only continues to send the second QoS parameter when it is sure that there is still a QoS parameter that can be segmented, the smooth progress of QoS segmentation can be ensured, and the validity of the second QoS parameter can be ensured, thereby improving the efficiency of QoS parameter segmentation.

[0151] In the QoS parameter segmentation method provided in this application embodiment, since any UE (e.g., the first UE) in the secondary link communication system can send the QoS parameters between the first UE and the target UE to the downstream one-hop connected UE (e.g., the first relay UE), the first relay UE can further determine the QoS parameters between the first relay UE and the target UE. In this way, multiple UEs in the secondary link communication system can participate in the negotiation of end-to-end QoS parameter segmentation, thereby improving the QoS parameter segmentation performance and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0152] Optionally, after step 502 above, the QoS parameter segmentation method provided in this application embodiment may further include steps 505 and 506 as described below.

[0153] Step 505: If the target conditions are not met, the first relay UE sends a notification message to the first UE.

[0154] Step 506: The first UE receives the notification message.

[0155] The aforementioned notification message is used to notify the first UE that the QoS segmentation process has failed.

[0156] For a detailed description of the target conditions, please refer to the relevant descriptions of the target conditions in the above embodiments. To avoid repetition, they will not be repeated here.

[0157] In this embodiment of the application, since the first relay UE can send a notification message to the first UE to notify the first UE that the QoS parameter segmentation process has failed even if the target conditions are not met, that is, the first relay UE can immediately report the result of the QoS segmentation process failure to its upstream UE so that the first UE can handle the QoS segmentation process failure event in a timely manner, the robustness of the QoS parameter segmentation process can be improved.

[0158] Optionally, combined Figure 4 ,like Figure 5 As shown, after step 504 above, the QoS parameter segmentation method provided in this application embodiment may further include steps 507 to 511 below.

[0159] Step 507: The second UE sends at least one set of first adoption QoS parameters to the first relay UE.

[0160] Step 508: The first relay UE receives at least one set of first adoption QoS parameters.

[0161] Each set of first adoption QoS parameters can be: the adoption QoS parameters of one hop radio link in at least one hop radio link, where the at least one hop radio link includes each hop radio link between the first relay UE and the target UE.

[0162] For example, assuming that there are relay UE1, relay UE2 and relay UE3 linked sequentially between the source UE and the target UE, and the first relay UE is relay UE1, then at least one hop radio link includes: the radio link between UE1 and UE2, the radio link between UE2 and UE3, and the radio link between UE3 and the target UE.

[0163] It should be noted that at least one set of first adoption QoS parameters includes at least: the adoption QoS parameters of the radio link between the first relay UE and the second UE. That is, each UE in the secondary link communication system can send the adoption QoS parameters of the radio link between these two UEs to the UE connected to its upstream one hop. And these adoption QoS parameters are determined by the UE that is downstream of the two UEs.

[0164] Step 509: The first relay UE determines a set of second adoption QoS parameters based on at least one set of first adoption QoS parameters and the first QoS parameters.

[0165] Among them, the aforementioned second set of adopted QoS parameters are the adopted QoS parameters of the radio link between the first UE and the first relay UE.

[0166] In this embodiment of the application, each relay UE in the secondary link communication system can determine or define the adoption QoS parameters of the radio link between the relay UE and the UE connected to the upstream one-hop of the relay UE.

[0167] Step 510: The first relay UE sends at least one set of third adoption QoS parameters to the first UE.

[0168] Step 511: The first UE receives at least one set of third adoption QoS parameters.

[0169] Each set of third adoption QoS parameters may include at least one of the following: a set of first adoption QoS parameters from the above-mentioned at least one set of first adoption QoS parameters, and a set of second adoption parameters.

[0170] In this embodiment of the application, when the first UE is the source UE, the at least one set of third adoption parameters is used to indicate that the first UE has successfully performed end-to-end QoS parameter segmentation, so that the first UE can start secondary link data transmission through the first relay UE. When the first UE is a relay UE, the at least one set of third adoption parameters is used by the first UE to determine the adoption QoS parameters of the radio link between the first UE and the upstream one-hop connected UE.

[0171] In this embodiment, since the first relay UE can determine the adopted QoS parameters of the wireless link between the first relay UE and the second UE based at least on the first QoS parameters and the adopted QoS parameters of the wireless link between the first relay UE and the second UE sent by the second UE, that is, the first relay UE at least refers to the adopted QoS parameters of the wireless link between itself and the UE connected to its downstream one-hop, the QoS parameter segmentation can be more accurate.

[0172] Step 509 will be described in detail below, combining the first and second methods.

[0173] The first method: In the secondary link communication system, any UE determines the adoption QoS parameters of the radio link between itself and the target UE based on the total QoS parameters between itself and the target UE and the adoption QoS parameters of all radio links between itself and the target UE.

[0174] Optionally, in the first approach, the aforementioned at least one set of first adopted QoS parameters may include: the adopted QoS parameters for each hop of the radio link between the first relay UE and the target UE. That is, the at least one set of first adopted QoS parameters may include: the adopted QoS parameters for all radio links between the first relay UE and the target UE. Step 509 can be specifically implemented through step 509a as described below.

[0175] Step 509a: The first relay UE performs segmentation processing on the first QoS parameter and the fourth QoS parameter to obtain a set of second adopted QoS parameters. The fourth QoS parameter is composed of at least one set of first adopted QoS parameters.

[0176] Optionally, the first relay UE can first perform addition on at least one set of first adopted QoS parameters to obtain a fourth QoS parameter, and then perform subtraction on the first QoS parameter and the fourth QoS parameter to obtain a set of second adopted QoS parameters. Alternatively, the first relay UE can use the first QoS parameter to sequentially perform subtraction on at least one set of first adopted 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.

[0177] Of course, in actual implementation, any other possible methods can be used to perform segmentation processing on the first QoS parameter and the fourth QoS parameter to obtain a set of second adoption QoS parameters.

[0178] Optionally, in actual implementation, the second UE may first perform addition processing on the above-mentioned at least one set of first adopted QoS parameters to obtain the sum of 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.

[0179] It is understood that in this embodiment of the application, when the first UE is a relay UE, the aforementioned at least one set of third adopted QoS parameters includes: a set of second adopted QoS parameters and at least one set of first adopted QoS parameters. This is so that after receiving at least one set of third adopted QoS parameters, the first UE can further determine the adopted QoS parameters of the radio link between the first UE and the UE connected to its upstream hop based on the at least one set of third adopted QoS parameters.

[0180] In this embodiment, since the first relay UE can determine the adopted QoS parameters of the radio link between the first relay UE and the UE connected one hop upstream of the first relay UE (i.e., the first UE) based on the QoS parameters between the first relay UE and the target UE, as well as the adopted QoS parameters of each hop radio link between the first relay UE and the target UE, it can ensure that the adopted QoS parameters of the radio link between the first relay UE and the target UE meet the QoS service requirements between the first relay UE and the target UE, thereby improving the accuracy of QoS parameter segmentation.

[0181] The second method: Any UE in the secondary link communication system determines the adopted QoS parameters of the radio link between itself and the UE connected to its previous hop based on the candidate QoS parameters of the radio link between itself and the UE connected to its next hop, and the adopted QoS parameters of the radio link between itself and the UE connected to its next downstream hop.

[0182] Understandably, in the second approach, each UE needs to maintain candidate QoS parameters for the radio link between itself and the UE connected to its upstream hop, either by the UE connected to its upstream hop or by each UE determining its own parameters.

[0183] Optionally, in the second approach, the aforementioned at least one set of first adoption QoS parameters may include at least: adoption QoS parameters for the radio link between the first relay UE and the second UE. Step 509 can be specifically implemented through step 509b below.

[0184] Step 509b: The first relay UE determines a set of second adopted QoS parameters from the first candidate QoS parameters based on at least one set of first adopted QoS parameters.

[0185] The first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the first relay UE. The first candidate QoS parameter is determined by the third UE based on the first QoS parameter. The third UE includes at least one of the following: the first UE and the first relay UE.

[0186] It should be noted that when at least one set of first adoption QoS parameters also includes the adoption QoS parameters of other radio links in the above-mentioned at least one-hop radio link, the first relay UE shall take into account the adoption QoS parameters of these other radio links when determining the second QoS parameters.

[0187] It is understood that in the embodiments of this application, when the first UE is a relay UE, the above-mentioned at least one set of third adopted QoS parameters may include at least the above-mentioned second adopted QoS parameters.

[0188] Optionally, the first relay UE determines a set of second adopted QoS parameters from the first candidate QoS parameters based on at least one set of first adopted QoS parameters by: the first relay UE selecting the second candidate adopted QoS parameters from the first candidate QoS parameters using at least one set of first adopted QoS parameters as an index. That is, it selects a set of first candidate values ​​from at least one set of first candidate values ​​of the first candidate QoS parameters.

[0189] In this embodiment of the application, since the first relay UE can directly determine the adopted QoS parameters of the wireless link between the first relay UE and the first UE from the first candidate QoS parameters based on the adopted QoS parameters of its downstream wireless link, the ease of operation in determining the adopted QoS parameters can be improved.

[0190] Furthermore, since the adoption QoS parameters of the radio link between the first relay UE and the first UE can be determined solely based on the adoption QoS parameters of the radio link one hop downstream of the first relay UE, the signaling overhead of each UE in the secondary link communication system can be saved.

[0191] This application also provides a QoS parameter segmentation method. Figure 6 A flowchart illustrating the QoS parameter segmentation method provided in an embodiment of this application is shown, as follows: Figure 6 As shown, the QoS parameter segmentation method provided in this application embodiment may include the following steps 700 to 702.

[0192] Step 700: The source UE determines the fifth QoS parameter based on the target QoS parameter.

[0193] Step 701: The source UE sends the fifth QoS parameter to the second relay UE.

[0194] Step 702: The second relay UE receives the fifth QoS parameter.

[0195] The second relay UE is a relay UE connected one hop downstream of the source UE; the target QoS parameters are determined based on the service QoS requirements of the secondary link communication between the source UE and the target UE.

[0196] In this embodiment of the application, the fifth QoS parameter may include: candidate QoS parameters corresponding to the radio link between the source UE and the second relay UE, and QoS parameters between the second relay UE and the target UE.

[0197] It is understood that when the first relay UE in the other possible implementation described above is the first relay UE in the secondary link communication system, the source UE in this embodiment is the first UE in the other possible implementation described above. In this case, the source UE in this embodiment can perform all the operations performed by the first UE in the other possible implementation described above, and the fifth QoS parameter is the same as the first QoS parameter in the other possible implementation described above, and the second relay UE is the same as the first relay UE in the other possible implementation described above.

[0198] For further descriptions of steps 700 to 702, please refer to the relevant descriptions in the other method described above. To avoid repetition, they will not be repeated here.

[0199] In the QoS parameter segmentation method provided in this application embodiment, since the source UE can participate in QoS parameter segmentation, the accuracy of QoS segmentation can be improved.

[0200] Optionally, combined Figure 6 ,like Figure 7 As shown, after step 702 above, the QoS parameter segmentation method provided in this application embodiment may further include steps 703 to 704 as described below.

[0201] Step 703: The second relay UE sends at least one set of fourth adoption QoS parameters to the source UE.

[0202] Step 704: The source UE receives at least one set of fourth adoption QoS parameters.

[0203] Among them, the above-mentioned at least one set of fourth adoption QoS parameters may include: adoption QoS parameters of at least one hop radio link between the source UE and the target UE.

[0204] For example, the aforementioned at least one set of fourth adoption parameters may include: adoption QoS parameters for each hop of the radio link between the source UE and the target UE, or the aforementioned at least one set of fourth adoption QoS parameters may include: adoption QoS parameters for the radio link between the source UE and the second relay UE.

[0205] In this embodiment, the source UE can determine that the QoS parameter segmentation process is successful by receiving at least one set of fourth adoption QoS parameters, thereby enabling the source UE to communicate with the target UE via a secondary link through at least one relay UE. This at least one relay UE may include a second relay UE.

[0206] In this embodiment of the application, the source UE can determine that the current QoS parameter segmentation process is successful based on at least one set of fourth adoption QoS parameters received, so that the source UE can communicate with the target UE through at least one relay UE via a secondary link.

[0207] Optionally, in combination with the above Figure 6 ,like Figure 8 As shown, after step 702 above, the QoS parameter segmentation method provided in this application embodiment may further include steps 705 and 706 as described below.

[0208] Step 705: The second relay UE sends a target notification message to the source UE.

[0209] Step 706: The source UE receives the target notification message.

[0210] The target notification message can be used to notify the source UE that the QoS segmentation process has failed.

[0211] In this embodiment of the application, the second relay UE can send a target notification message to the source UE if the QoS parameter segmentation process fails.

[0212] For further details on step 705, please refer to the relevant description of step 505 in the above embodiments.

[0213] It is understood that in the embodiments of this application, the second relay UE may send a target notification message to the source UE when it is determined that there are no available QoS parameters between the second relay UE and the target UE, for example, when there are no available candidate QoS parameters in the radio link between the second relay UE and the UE connected to the downstream one-hop of the second relay UE.

[0214] In this embodiment of the application, since the second relay UE can send a target notification message to the source UE to notify the source UE that the QoS segmentation process has failed, the source UE can be informed of the result of the QoS segmentation process in a timely manner and respond accordingly to the result.

[0215] Optionally, after step 706 above, the QoS parameter segmentation method provided in this application embodiment may further include at least one of steps 707 and 708 below.

[0216] Step 707: Release the end-to-end connection between the source UE and the target UE.

[0217] Step 708: Source triggers QoS parameter renegotiation between the source and target UE.

[0218] In this embodiment of the application, since the source UE releases the end-to-end connection with the target UE after determining that the QoS segmentation process has failed, and / or can trigger QoS parameter renegotiation with the target UE, the QoS segmentation process can be improved.

[0219] This application also provides a QoS parameter segmentation method. Figure 9 A flowchart illustrating the QoS parameter segmentation method provided in an embodiment of this application is shown, as follows: Figure 9 As shown, the QoS parameter segmentation method provided in this application embodiment may include the following steps 1000 to 1004.

[0220] Step 1000: The third relay UE sends the sixth QoS parameter to the target UE.

[0221] Step 1001: The target UE receives the sixth QoS parameter.

[0222] Among them, the third relay UE is the relay UE connected one hop upstream of the target UE, and the sixth QoS parameter is the candidate QoS parameter corresponding to the radio link between the third relay UE and the target UE.

[0223] Optionally, the sixth QoS parameter may include at least one set of sixth candidate values.

[0224] Step 1002: The target UE determines the adoption QoS parameters of the radio link between the third relay UE and the target UE based on the sixth QoS parameter.

[0225] In this embodiment of the application, the target UE can select a set of sixth candidate values ​​from at least one set of sixth candidate values ​​as the adoption QoS parameter of the radio link between the third relay UE and the target UE.

[0226] Step 1003: The target UE sends the adoption QoS parameters of the radio link between the third relay UE and the target UE to the third relay UE.

[0227] Step 1004: The third relay UE receives the adoption QoS parameters of the radio link between the third relay UE and the target UE.

[0228] In this embodiment, when the second UE in the above embodiments is the target UE, the third relay UE is the same as the first relay UE in the above embodiments and can perform all the operations performed by the first relay UE. In this case, the sixth QoS parameter can be the same as the second QoS parameter.

[0229] In the QoS parameter segmentation method provided in this application embodiment, since the target UE can participate in determining the adoption QoS parameters of the radio link between the target UE and the third relay UE, it can ensure that the adoption QoS parameters of the radio link between the target UE and the third relay UE can meet the needs of the target UE, thereby improving the accuracy of the QoS segmentation process.

[0230] To facilitate understanding of the QoS parameter segmentation method provided in this application embodiment, the following example illustrates the QoS parameter segmentation method provided in this application embodiment using the example of source UE and target UE communicating via a secondary link through three relay UEs.

[0231] In the following implementation methods 1 to 3, it is assumed that there are S relay UEs connecting the source UE and the target UE, and the radio link between the source UE and the first relay UE is called hop-0, the radio link between the first relay UE and the second relay UE is called hop-1, and so on, the radio link between the Sth relay UE and the target UE is called hop-S, where S is a positive integer.

[0232] Implementation Method 1: In the secondary link communication system, each UE participates in determining the QoS parameter allocation of its upstream one-hop radio link.

[0233] In this implementation method 1, the source UE (because there is no upstream) does not participate in QoS segmentation; the first relay UE determines the candidate QoS parameters for hop-0, the first relay UE participates in determining the candidate QoS parameters for hop-1, ..., and so on, the Sth relay UE determines the candidate QoS parameters for hop-(S-1) and the candidate QoS parameters for hop-S.

[0234] For example, taking S=3 as an example, the secondary link communication system includes a source UE, relay UE1, relay UE2, relay UE3, and target UE connected sequentially. The radio link between the source UE and relay UE1 is called hop-0, the radio link between relay UE1 and relay UE2 is called hop-1, the radio link between relay UE2 and relay UE3 is called hop-2, and the radio link between relay UE3 and target UE is called hop-3. Figure 10 As shown, the QoS parameter segmentation method provided in this application embodiment may include the following steps 1 to 11:

[0235] Step 1: The source UE sends the end-to-end QoS parameters ( Figure 10 The E2E QoS (target QoS parameter) is sent to relay UE1. This end-to-end QoS parameter is determined by the service QoS requirements between the source UE and the target UE.

[0236] Thus, relay UE1 can receive the end-to-end QoS parameters.

[0237] Step 2: Based on the end-to-end QoS parameters, relay UE1 determines the "candidate QoS parameters for hop-0". Figure 10 The QoS for hop-0 (e.g., the first candidate QoS parameter). The "candidate QoS parameter for hop-0" must possess at least one of the following characteristics:

[0238] The “candidate QoS parameters of hop-0” consist of at least one set of candidate values, such as at least one set of first candidate values ​​in the above embodiments.

[0239] Based on the "candidate QoS parameters of hop-0" and the end-to-end QoS parameters, the "total QoS parameters between relay UE1 and the target UE" can be derived. Figure 10 (See "QoS for remaining 3hops" in the text). The "Total QoS Parameters between Relay UE1 and Target UE" also consists of at least one set of candidate values.

[0240] For example, taking latency as a typical QoS parameter, assuming the end-to-end QoS parameter is 100ms, if the "candidate QoS parameters of hop-0" include at least one set of candidate values, then the following candidate combinations exist: the latency of hop0 is 20ms, and the latency of the total QoS parameter between relay UE1 and the target UE is 80ms; the latency of hop0 is 50ms, and the latency of the total QoS parameter between relay UE1 and the target UE is 50ms.

[0241] Relay UE1 can combine its own AS layer and upper layer conditions (such as upstream / downstream radio link quality, current resource pool congestion, upper layer acceptable QoS, etc.) to achieve the best QoS decision.

[0242] Step 3: If relay UE1 determines that there are available "candidate QoS parameters for hop-0" or "total QoS parameters between relay UE1 and the target UE", then relay UE1 will send the "total QoS parameters between relay UE1 and the target UE" to its downstream node, namely relay UE2. Thus, relay UE2 can receive the "total QoS parameters between relay UE1 and the target UE".

[0243] Otherwise, relay UE1 notifies the source UE of a "QoS segmentation process failure", that is, sends a notification message to the source UE to inform the source UE that a "QoS segmentation process failure" has occurred.

[0244] Step 4: After receiving the "total QoS parameters between relay UE1 and the target UE", relay UE2 determines the "candidate QoS parameters for hop-1" based on the "total QoS parameters between relay UE1 and the target UE". Figure 10 In the QoS for hop-1), the "candidate QoS parameters for hop-1" have at least one of the following characteristics:

[0245] The “candidate QoS parameters of hop-1” consist of at least one set of candidate values.

[0246] Based on "candidate QoS parameters of hop-1" and "total QoS parameters between relay UE1 and target UE" Figure 10 From the QoS for remaining 2 hops, the "total QoS parameters between relay UE2 and the target UE" can be derived. The "total QoS parameters between relay UE2 and the target UE" also consists of at least one set of candidate values.

[0247] Step 5: If relay UE2 determines that there are available "candidate QoS parameters of hop-1" or "total QoS parameters between UE2 and target UE", then relay UE2 will send the "total QoS parameters between relay UE2 and target UE" to its downstream node, namely relay UE3.

[0248] Otherwise, relay UE2 will notify its upstream node (i.e., relay UE1) of a "QoS segmentation process failure".

[0249] Step 6: After receiving the "total QoS parameters between relay UE2 and the target UE", relay UE3 determines the "candidate QoS parameters for hop-2" based on the "total QoS parameters between relay UE2 and the target UE". Figure 10 (QoS for hop-2). The "candidate QoS parameters for hop-2" must possess at least one of the following characteristics:

[0250] The “candidate QoS parameters for hop-2” consist of at least one set of candidate values.

[0251] Based on the "candidate QoS parameters of hop-2" and the "total QoS parameters between relay UE2 and the target UE", the "total QoS parameters between relay UE3 and the target UE" can be derived. Figure 10 The QoS for remaining 1 hops, "Total QoS parameters between relay UE3 and target UE" also consists of at least one set of candidate values.

[0252] Step 7: If relay UE3 determines that there are available "candidate QoS parameters for hop-2" or "total QoS parameters between relay UE3 and target UE", then relay UE3 will send the "total QoS parameters between relay UE3 and target UE" to the target UE.

[0253] Otherwise, relay UE3 will notify its upstream node (i.e., relay UE) of a "QoS segmentation process failure".

[0254] After receiving the "total QoS parameters between relay UE3 and the target UE", the target UE determines the "adoption QoS parameters of hop-3" based on the "total QoS parameters between relay UE3 and the target UE". Figure 10 The "accepted QoS for hop-3" parameter has one set of candidate values ​​from the "candidate QoS parameters for hop-2".

[0255] Step 8: The target UE sends the "acceptance QoS parameters of hop-3" to the relay UE3.

[0256] After receiving the "acceptance QoS parameters for hop-3", relay UE3 decides on the "acceptance QoS parameters for hop-2". Figure 10 (Accepted QoS for hop-2).

[0257] Step 9: Relay UE3 shall at least send the “acceptance QoS parameters of hop-2” to relay UE2.

[0258] Then, relay UE3 can determine the "acceptance QoS parameters of hop-1" ( Figure 10 (Accepted QoS for hop-1).

[0259] Step 10: Relay UE2 shall send at least the “acceptance QoS parameters of hop-1” to relay UE1.

[0260] Then relay UE2 can determine the "acceptance QoS parameters of hop-0" ( Figure 10 (Accepted QoS for hop-0).

[0261] Step 11: Relay UE1 shall send at least the “acceptance QoS parameters of hop-0” to the source UE.

[0262] If the source UE receives any of the adopted QoS parameters in step 11, the QoS segmentation process is considered to have been successfully completed; otherwise, the QoS segmentation process is considered to have failed.

[0263] If the source UE determines that the QoS segmentation process has failed, it shall take one of the following measures: release the end-to-end connection with the target UE; or trigger end-to-end QoS renegotiation with the target UE.

[0264] Optionally, the above-described QoS segmentation steps are implemented using PC5-RRC or PC5-S signaling procedures. If it is a PC5-RRC signaling procedure, the messages in steps 1, 3, 5, and 7 can be PC5 RRC reconfiguration messages, and the messages in steps 8 to 11 can be PC5 RRC reconfiguration complete messages or PC5 RRC reconfiguration failure messages. If it is a PC5-S signaling procedure, the messages in steps 1, 3, 5, and 7 can be PC5-S link modification messages, and the messages in steps 8 to 11 can be PC5-S link modification accept messages or PC5-S link modification reject messages.

[0265] Implementation Method 2: In the secondary link communication system, each UE participates in determining the QoS parameter segmentation of its downstream one-hop radio link.

[0266] In this implementation method 2, the source UE determines the candidate QoS parameters for hop-0, the first relay UE participates in determining the candidate QoS parameters for hop-1, ..., and so on, the Sth relay UE determines the candidate QoS parameters for hop-(S), and the target UE does not participate in the determination of candidate QoS parameters since it has no downstream UE.

[0267] For example, taking S=3 as an example, the secondary link communication system includes a source UE, relay UE1, relay UE2, relay UE3, and target UE connected sequentially. The radio link between the source UE and relay UE1 is called hop-0, the radio link between relay UE1 and relay UE2 is called hop-1, the radio link between relay UE2 and relay UE3 is called hop-2, and the radio link between relay UE3 and target UE is called hop-3. Figure 11 As shown, the QoS parameter segmentation method provided in this application embodiment may include the following steps 12 to 23:

[0268] Step 12: The source UE determines the "candidate QoS parameters for hop-0" ( Figure 11 QoS for hop-0. The "candidate QoS parameters for hop-0" must possess at least one of the following characteristics:

[0269] The “candidate QoS parameters of hop-0” consist of at least one set of candidate values, such as at least one set of first candidate values ​​in the above embodiments.

[0270] Based on the "candidate QoS parameters of hop-0" and the end-to-end QoS parameters, the "total QoS parameters between relay UE1 and the target UE" can be derived. Figure 11 The QoS parameters for the remaining 3 hops are also defined in the table. The total QoS parameters between relay UE1 and the target UE also consist of at least one set of candidate values. The end-to-end QoS parameters are determined by the service QoS requirements between the source UE and the target UE.

[0271] Step 13: The source UE sends the "candidate QoS parameters of hop-0" and the "total QoS parameters between relay UE1 and the target UE" to relay UE1.

[0272] Therefore, relay UE1 can receive "candidate QoS parameters of hop-0" and "total QoS parameters between relay UE1 and target UE".

[0273] Step 14: Relay UE1 determines the "candidate QoS parameters for hop-1" Figure 11 (QoS for hop-1). The "candidate QoS parameters for hop-1" must possess at least one of the following characteristics:

[0274] The “candidate QoS parameters of hop-1” consist of at least one set of candidate values.

[0275] Based on the "candidate QoS parameters of hop-1" and the "total QoS parameters between relay UE1 and the target UE", the "total QoS parameters between relay UE2 and the target UE" can be derived. Figure 11 The total QoS parameters between relay UE2 and the target UE also consist of at least one set of candidate values.

[0276] Step 15: If relay UE1 determines that there are available "candidate QoS parameters for hop-1" or "total QoS parameters between relay UE2 and target UE", then relay UE1 sends the "candidate QoS parameters for hop-1" and "total QoS parameters between relay UE2 and target UE" to its downstream node (relay UE2).

[0277] Otherwise, relay UE1 will notify the source UE that "QoS segmentation process failed".

[0278] Step 16: After receiving the "candidate QoS parameters of hop-1" and the "total QoS parameters between relay UE2 and the target UE", relay UE2 determines the "candidate QoS parameters of hop-2". Figure 11 (QoS for hop-2). The "candidate QoS parameters for hop-2" must possess at least one of the following characteristics:

[0279] The “candidate QoS parameters for hop-2” consist of at least one set of candidate values.

[0280] Based on the "candidate QoS parameters of hop-2" and the "total QoS parameters between relay UE2 and the target UE", the "total QoS parameters between relay UE3 and the target UE" can be derived. Figure 11 The total QoS parameters between relay UE3 and the target UE also consist of at least one set of candidate values.

[0281] Step 17: If relay UE2 determines that there are available "candidate QoS parameters for hop-2" or "total QoS parameters between relay UE2 and target UE", then relay UE2 sends the "candidate QoS parameters for hop-2" and the "total QoS parameters between relay UE2 and target UE" to its downstream node (i.e., relay UE3).

[0282] Otherwise, relay UE2 will notify its upstream node (i.e., relay UE2) of a "QoS segmentation process failure".

[0283] Step 18: After receiving the "candidate QoS parameters for hop-2" and the "total QoS parameters between relay UE2 and the target UE", relay UE3 determines the "candidate QoS parameters for hop-3". Figure 11The QoS for hop-3. The "candidate QoS parameters for hop-3" must possess at least one of the following characteristics:

[0284] The “candidate QoS parameters for hop-3” consist of at least one set of candidate values.

[0285] The “candidate QoS parameters for hop-3” are at least one set of candidate values ​​from the “candidate QoS parameters for hop-2”.

[0286] Step 19: If the relay UE3 determines that there are available "candidate QoS parameters for hop-3", then the relay UE3 will send the "candidate QoS parameters for hop-3" to the target UE.

[0287] If relay UE3 determines that there are no available "candidate QoS parameters for hop-3", then relay UE3 notifies relay UE2 that "QoS segmentation process failed".

[0288] After receiving the "candidate QoS parameters for hop-3", the target UE can determine the "adopted QoS parameters for hop-3". Figure 11 The "accepted QoS parameters for hop-3" refers to a set of candidate values ​​from the "candidate QoS parameters for hop-3".

[0289] Step 20: The target UE will send the "acceptance QoS parameters of hop-3" to relay UE3.

[0290] After receiving the "acceptance QoS parameters of hop-3", relay UE3 can determine the "acceptance QoS parameters of hop-2". Figure 11 (Accepted QoS for hop-2).

[0291] Step 21: Relay UE3 shall send at least the “acceptance QoS parameters of hop-2” to relay UE2.

[0292] After receiving the adoption QoS parameters in step 21, relay UE2 determines the "adoption QoS parameters of hop-1" ( Figure 11 (Accepted QoS for hop-1).

[0293] Step 22: Relay UE2 sends at least the "acceptance QoS parameters of hop-1" to relay UE1.

[0294] After receiving the adoption QoS parameters in step 22, relay UE1 can determine the "adoption QoS parameters of hop-0" ( Figure 11(Accepted QoS for hop-0).

[0295] Step 23: Relay UE1 shall send at least the “acceptance QoS parameters of hop-0” to the source UE.

[0296] If the source UE receives one or more of the adopted QoS parameters in step 23, the QoS segmentation process is considered to have been successfully completed; otherwise, the QoS segmentation process is considered to have failed.

[0297] If the source UE determines that the QoS segmentation process has failed, it shall take one of the following measures: - Release the end-to-end connection with the target UE; - Trigger end-to-end QoS renegotiation with the target UE.

[0298] Optionally, the above-described QoS segmentation steps are implemented using PC5-RRC or PC5-S signaling procedures. If it is a PC5-RRC signaling procedure, the messages in steps 13, 15, 17, and 19 can be PC5 RRC reconfiguration messages, and the messages in steps 20 to 23 can be PC5 RRC reconfiguration complete messages or PC5 RRC reconfiguration failure messages. If it is a PC5-S signaling procedure, the messages in steps 13, 15, 17, and 19 can be PC5-S link modification messages, and the messages in steps 20 to 23 can be PC5-S link modification accept messages or PC5-S link modification reject messages.

[0299] Implementation Method 3: In the secondary link communication system, each UE participates in determining the QoS parameter allocation of its upstream and downstream radio links.

[0300] In this implementation method 3, the source UE and the first relay UE determine the candidate QoS parameters of hop-0, the first relay UE and the second relay UE participate in determining the candidate QoS parameters of hop-1, ..., and so on, until the Sth relay UE determines the candidate QoS parameters of hop-(S).

[0301] For example, taking S=3 as an example, the secondary link communication system includes a source UE, relay UE1, relay UE2, relay UE3, and target UE connected sequentially. The radio link between the source UE and relay UE1 is called hop-0, the radio link between relay UE1 and relay UE2 is called hop-1, the radio link between relay UE2 and relay UE3 is called hop-2, and the radio link between relay UE3 and target UE is called hop-3. Figure 12 As shown, the QoS parameter segmentation method provided in this application embodiment may include the following steps 24 to 35:

[0302] Step 24: The source UE determines the "candidate QoS parameters for hop-0" ( Figure 12 QoS for hop-0. The "candidate QoS parameters for hop-0" must possess at least one of the following characteristics:

[0303] The “candidate QoS parameters of hop-0” consist of at least one set of candidate values, such as at least one set of first candidate values ​​in the above embodiments.

[0304] Based on the "candidate QoS parameters of hop-0" and the end-to-end QoS parameters, the "total QoS parameters between relay UE1 and the target UE" can be derived. Figure 12 The QoS parameters for the remaining 3 hops are also defined in the table. The total QoS parameters between relay UE1 and the target UE also consist of at least one set of candidate values. The end-to-end QoS parameters are determined by the service QoS requirements between the source UE and the target UE.

[0305] Step 25: The source UE sends the "candidate QoS parameters of hop-0" and the "total QoS parameters between relay UE1 and the target UE" to relay UE1.

[0306] Therefore, relay UE1 can receive "candidate QoS parameters of hop-0" and "total QoS parameters between relay UE1 and target UE".

[0307] Step 26: Relay UE1 determines the "final candidate QoS parameters for hop-0" and the "candidate QoS parameters for hop-1" ( Figure 12 The QoS for hop-1. The "candidate QoS parameters for hop-1" must possess at least one of the following characteristics:

[0308] The “candidate QoS parameters of hop-1” consist of at least one set of candidate values.

[0309] Based on the "final candidate QoS parameters of hop-0", the "candidate QoS parameters of hop-1", and the "total QoS parameters between relay UE1 and the target UE", the "total QoS parameters between relay UE2 and the target UE" can be derived. The "total QoS parameters between relay UE2 and the target UE" also consists of at least one set of candidate values.

[0310] Specifically, the relay UE1 determines the "final candidate QoS parameters of hop-0" by selecting at least one set of candidate values ​​from the "candidate QoS parameters of hop-0" determined by the source UE.

[0311] Step 27: If relay UE1 determines that there are available "candidate QoS parameters for hop-1" or "total QoS parameters between relay UE2 and target UE", then relay UE1 sends the "candidate QoS parameters for hop-1" and "total QoS parameters between relay UE2 and target UE" to its downstream node (i.e., relay UE2).

[0312] Otherwise, relay UE1 will notify the source UE that "QoS segmentation process failed".

[0313] Step 28: After receiving the "candidate QoS parameters of hop-1" and the "total QoS parameters between hop-2 and the target UE", relay UE2 can determine the "final candidate QoS parameters of hop-1" and the "candidate QoS parameters of hop-2". Figure 12 (QoS for hop-2). The "candidate QoS parameters for hop-2" must possess at least one of the following characteristics:

[0314] The “candidate QoS parameters for hop-2” consist of at least one set of candidate values.

[0315] Based on the "final candidate QoS parameters of hop-1", the "candidate QoS parameters of hop-2", and the "total QoS parameters between relay UE2 and the target UE", the "total QoS parameters between relay UE3 and the target UE" can be derived. The "total QoS parameters between relay UE3 and the target UE" also consists of at least one set of candidate values.

[0316] Specifically, relay UE2 determines the "final candidate QoS parameters of hop-1" by selecting at least one set of candidate values ​​from the "candidate QoS parameters of hop-1" determined by relay UE1.

[0317] Step 28: If relay UE2 determines that there are available "candidate QoS parameters for hop-2" or "total QoS parameters between relay UE3 and the target UE", then relay UE2 sends the "candidate QoS parameters for hop-2" and "total QoS parameters between relay UE3 and the target UE" to its downstream node (i.e., relay UE3).

[0318] Otherwise, relay UE2 will notify its upstream node (i.e., relay UE1) of a "QoS segmentation process failure".

[0319] Step 29: After receiving the "candidate QoS parameters of hop-2" and the "total QoS parameters between hop-3 and the target UE", relay UE3 can determine the "final candidate QoS parameters of hop-2" and the "candidate QoS parameters of hop-3". Figure 12(QoS for hop-3). The "candidate QoS parameters for hop-3" must possess at least one of the following characteristics:

[0320] The “candidate QoS parameters for hop-3” consist of at least one set of candidate values.

[0321] "Candidate QoS parameters for hop-3" refers to at least one set of candidate values ​​for "total QoS parameters between relay UE3 and target UE" determined by relay UE2.

[0322] Specifically, relay UE3 determines the "final candidate QoS parameters of hop-2" by selecting at least one set of candidate values ​​from the "candidate QoS parameters of hop-2" determined by relay UE2.

[0323] Step 30: If the relay UE3 determines that there are available "candidate QoS parameters for hop-3", then the relay UE3 will send the "candidate QoS parameters for hop-3" to the target UE.

[0324] If relay UE3 determines that there are no available "candidate QoS parameters for hop-3", then relay UE3 notifies its upstream node (i.e., relay UE2) that "QoS splitting process failed".

[0325] After receiving the "candidate QoS parameters for hop-3", the target UE determines the "adopted QoS parameters for hop-3". Figure 12 The "accepted QoS for hop-3" parameter is a set of candidate values ​​from the "candidate QoS parameters for hop-3" parameter.

[0326] Step 31: The target UE will send the "acceptance QoS parameters of hop-3" to the relay UE3.

[0327] Thus, relay UE3 can receive the "acceptance QoS parameters of hop-3". Then, relay UE3 can determine the "acceptance QoS parameters of hop-2" (…). Figure 12 (Accepted QoS for hop-2).

[0328] Step 32: Relay UE3 shall send at least the “acceptance QoS parameters of hop-2” to relay UE2.

[0329] Therefore, relay UE2 receives at least the "acceptance QoS parameters for hop-2". Then, relay UE2 can determine the "acceptance QoS parameters for hop-1" (…). Figure 12 (Accepted QoS for hop-1).

[0330] Step 33: Relay UE2 shall send at least the “acceptance QoS parameters of hop-1” to relay UE1.

[0331] Therefore, relay UE1 can at least receive the "acceptance QoS parameters of hop-1", and then relay UE1 can determine the "acceptance QoS parameters of hop-0" ( Figure 12 (Accepted QoS for hop-0).

[0332] Step 34: Relay UE1 shall send at least the “acceptance QoS parameters of hop-0” to the source UE.

[0333] Step 35: If the source UE receives at least one of the QoS parameters adopted in step 34, the QoS segmentation process is considered to have been successfully completed; otherwise, the QoS segmentation process is considered to have failed.

[0334] If the source UE determines that the QoS segmentation process has failed, it shall take one of the following measures: release the end-to-end connection with the target UE; or trigger end-to-end QoS renegotiation with the target UE.

[0335] Optionally, the above-described QoS segmentation steps are implemented using PC5-RRC or PC5-S signaling procedures. If it is a PC5-RRC signaling procedure, the messages in steps 25, 27, 29, and 31 can be PC5 RRC reconfiguration messages, and the messages in steps 32 to 35 can be PC5 RRC reconfiguration complete messages or PC5 RRC reconfiguration failure messages. If it is a PC5-S signaling procedure, the messages in steps 25, 27, 29, and 31 can be PC5-S link modification messages, and the messages in steps 32 to 35 can be PC5-S link modification accept messages or PC5-S link modification reject messages.

[0336] The QoS parameter segmentation method provided in this application can be executed by a QoS parameter segmentation device. This application uses an example of a QoS parameter segmentation device executing the QoS parameter segmentation method to illustrate the QoS parameter segmentation device provided in this application.

[0337] This application also provides a QoS parameter segmentation device. Figure 13 A possible structural schematic diagram of the QoS parameter segmentation device provided in the embodiments of this application is shown below. Figure 13As shown, the QoS parameter segmentation device 130 may include: a receiving module 131, a determining module 132, and a sending module 133; the receiving module 131 is used to receive a first QoS parameter sent by a first UE, the first UE being a UE connected to the upstream one-hop of the QoS parameter segmentation device 130, and the first QoS parameter includes QoS parameters between the first UE and the target UE; the determining module 132 is used to determine a second QoS parameter based on the first QoS parameter received by the receiving module 131; the sending module 133 is used to send the second QoS parameter determined by the determining module 132 to a second UE, the second UE being a UE connected to the downstream one-hop of the QoS parameter segmentation device 130; wherein, the second QoS parameter includes QoS parameters between the QoS parameter segmentation device 130 and the target UE; the source UE and the target UE communicate via a secondary link through the QoS parameter segmentation device 130.

[0338] In one possible implementation, the determining module 132 is specifically used to determine the second QoS parameter based on the first QoS parameter and the first candidate QoS parameter. The first candidate QoS parameter is a candidate QoS parameter corresponding to the wireless link between the first UE and the QoS parameter segmentation device 130, and the first candidate QoS parameter is determined based on the first QoS parameter.

[0339] In one possible implementation, the first QoS parameter includes the first candidate QoS parameter and the second QoS parameter.

[0340] In one possible implementation, 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 a candidate value in each set of first candidate values ​​and a candidate value in the second candidate values ​​that corresponds to the candidate value in the first candidate values.

[0341] In one possible implementation, when the first UE is the source UE, the first QoS parameter is the target QoS parameter, and the target QoS parameter corresponds to the service QoS requirements of the secondary link communication between the source UE and the target UE.

[0342] In one possible implementation, the first QoS parameter includes a first candidate QoS parameter and a third QoS parameter. The first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the QoS parameter segmentation device 130, and the third QoS parameter is the QoS parameter between the QoS parameter segmentation device 130 and the target UE.

[0343] The determining module 132 is specifically used to determine the second QoS parameter based at least on the third QoS parameter;

[0344] The second QoS parameter includes: candidate QoS parameters corresponding to the radio link between the QoS parameter segmentation device 130 and the second UE, and QoS parameters between the second UE and the target UE.

[0345] In one possible implementation, the determining module 132 is specifically used to select the first candidate QoS parameter and determine the second QoS parameter based on the third QoS parameter and the selected first candidate QoS parameter.

[0346] In one possible implementation, the third QoS parameter includes: candidate QoS parameters corresponding to the radio link between the QoS parameter segmentation device 130 and the second UE;

[0347] QoS parameters between the second UE and the target UE.

[0348] In one possible implementation, the source UE and the target UE communicate via a secondary link through multiple relay UEs, among which the QoS parameter segmentation device 130 is included.

[0349] In one possible implementation, the sending module 133 is specifically configured to send the second QoS parameter to the second UE when a target condition is met; wherein the target condition includes at least one of the following:

[0350] There are available candidate QoS parameters in the wireless link between the first UE and the QoS parameter segmentation device 130;

[0351] There are available QoS parameters between the QoS parameter segmentation device 130 and the target UE.

[0352] In one possible implementation, the sending module 133 is further configured to send a notification message to the first UE if the target condition is not met, the notification message being used to notify the first UE that the QoS segmentation process has failed.

[0353] In one possible implementation, the receiving module 131 is further configured to receive at least one set of first adoption QoS parameters sent by the second UE after the sending module 133 sends the second QoS parameters to the second UE. Each set of first adoption QoS parameters is: the adoption QoS parameters of one hop radio link in at least one hop radio link, and the at least one hop radio link includes each hop radio link between the QoS parameter segmentation device 130 and the target UE.

[0354] The determining module 132 is further configured to determine a set of second adoption QoS parameters based on the at least one set of first adoption QoS parameters and the first QoS parameters received by the receiving module 131, wherein the set of second adoption QoS parameters is the adoption QoS parameters of the wireless link between the first UE and the QoS parameter segmentation device 130;

[0355] The sending module 133 is further configured to send at least one set of third adoption QoS parameters to the first UE, each set of third adoption QoS parameters including any one of the following: a set of first adoption QoS parameters from the at least one set of first adoption QoS parameters, and a set of second adoption parameters.

[0356] In one possible implementation, at least one set of first adoption QoS parameters includes: adoption QoS parameters for each hop of the radio link between the QoS parameter segmentation device 130 and the target UE;

[0357] The determining module 132 is specifically used to perform segmentation processing on the first QoS parameter and the fourth QoS parameter to obtain the second set of adopted QoS parameters, wherein the fourth QoS parameter is composed of the at least one set of first adopted QoS parameters.

[0358] In one possible implementation, the above-mentioned at least one set of first adoption QoS parameters includes at least: adoption QoS parameters of the radio link between the QoS parameter segmentation device 130 and the second UE;

[0359] The determining module 132 is specifically used to determine the second set of adoption QoS parameters from the first candidate QoS parameters based on the at least one set of first adoption QoS parameters.

[0360] Wherein, the first candidate QoS parameter is the candidate QoS parameter corresponding to the wireless link between the first UE and the QoS parameter segmentation device 130, and the first candidate QoS parameter is determined by the third UE based on the first QoS parameter, and the third UE includes at least one of the following: the first UE, the QoS parameter segmentation device 130.

[0361] In the QoS parameter segmentation method provided in this application embodiment, since the QoS parameter segmentation device can receive the QoS parameters between the first UE and the target UE sent by the first UE, the first relay UE can further determine the QoS parameters between the first relay UE and the target UE. In this way, multiple UEs in the secondary link communication system can participate in the negotiation of end-to-end QoS parameter segmentation, thereby improving the accuracy of QoS parameter segmentation and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0362] This application also provides a QoS parameter segmentation device. Figure 14 A possible structural schematic diagram of the QoS parameter segmentation device provided in the embodiments of this application is shown below. Figure 14 As shown, the QoS parameter segmentation device 140 may include: a determining module 141 and a sending module 142; the determining module 141 is used to determine a fifth QoS parameter based on the target QoS parameter; the sending module 142 is used to send the fifth QoS parameter determined by the determining module 141 to a second relay UE, the second relay UE being a relay UE connected downstream of the QoS parameter segmentation device 140; wherein, the target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the QoS parameter segmentation device 140 and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to the radio link between the QoS parameter segmentation device 140 and the second relay UE, and QoS parameters between the second relay UE and the target UE.

[0363] In one possible implementation, the QoS parameter segmentation device 140 further includes: a receiving module and a communication module;

[0364] The receiving module is configured to receive at least one set of fourth adoption QoS parameters sent by the second relay UE after the sending module 142 sends the fifth QoS parameters to the second relay UE. The at least one set of fourth adoption QoS parameters includes: adoption QoS parameters of at least one hop radio link between the QoS parameter segmentation device 140 and the target UE.

[0365] In one possible implementation, the receiving module is further configured to, after the sending module 142 sends the fifth QoS parameter to the second relay UE,

[0366] The system receives a target notification message sent by the second relay UE, which is used to notify the QoS parameter segmentation device 140 that the QoS segmentation process has failed.

[0367] In one possible implementation, the QoS parameter segmentation device 140 further includes a processing module, which is configured to release the end-to-end connection with the target UE and / or trigger QoS parameter renegotiation with the target UE after the receiving module receives the target notification message sent by the second relay UE.

[0368] In the QoS parameter segmentation device provided in this application embodiment, since the QoS parameter segmentation device can determine the fifth QoS parameter between the second relay UE and the target UE based on the QoS parameters between the QoS parameter segmentation device and the target UE, it can ensure that the fifth QoS parameter meets the requirements of the QoS parameter segmentation device, thereby improving the segmentation accuracy of the QoS parameter and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0369] This application also provides a QoS parameter segmentation device. Figure 15 A possible structural schematic diagram of the QoS parameter segmentation device provided in the embodiments of this application is shown below. Figure 15 As shown, the QoS parameter segmentation device 150 may include: a receiving module 151, a determining module 152, and a sending module 153; the receiving module 151 is used to receive a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected to the upstream of the QoS parameter segmentation device 150, and the sixth QoS parameter is a candidate QoS parameter corresponding to the radio link between the third relay UE and the QoS parameter segmentation device 150; the determining module 152 is used to determine the adopted QoS parameter of the radio link based on the sixth QoS parameter received by the receiving module 151; the sending module 153 is used to send the adopted QoS parameter determined by the determining module 152 to the third relay UE.

[0370] In one possible implementation, the candidate QoS parameters are determined by at least one of the following: the third relay UE, and the QoS parameter segmentation device 150.

[0371] In the QoS parameter segmentation device provided in this application embodiment, since the QoS parameter segmentation device can use the candidate QoS parameters corresponding to the wireless link between the third relay UE and the QoS parameter segmentation device sent by the third relay UE, and determine the adopted QoS parameters of the wireless link based on the candidate QoS parameters, the adopted QoS parameters of the wireless link can meet the requirements of the QoS parameter segmentation device, thereby improving the accuracy of QoS parameter segmentation and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0372] The QoS parameter segmentation device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0373] The QoS parameter segmentation device provided in this application embodiment can achieve... Figures 1 to 12 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0374] This application also provides a communication device 5000, such as... Figure 16 As shown, the device includes a processor 5001 and a memory 5002. The memory 5002 stores programs or instructions that can run on the processor 5001. For example, when the communication device 5000 is a first relay UE, the program or instructions executed by the processor 5001 implement the various steps executed by the first relay UE in the above method embodiment and achieve the same technical effect. To avoid repetition, this will not be described in detail here. Alternatively, when the communication device 5000 is a source UE, the program or instructions executed by the processor 5001 implement the various steps executed by the source UE in the above method embodiment and achieve the same technical effect. To avoid repetition, this will not be described in detail here. Or, when the communication device 5000 is a target UE, the program or instructions executed by the processor 5001 implement the various steps executed by the target UE in the above method embodiment and achieve the same technical effect. To avoid repetition, this will not be described in detail here.

[0375] This application embodiment also provides a communication device, including a processor and a communication interface. The processor is used to determine a second QoS parameter based on a first QoS parameter. The communication interface is used to receive the first QoS parameter sent by a first UE, where the first UE is a UE connected to the terminal communication device upstream of the terminal communication device. The first QoS parameter includes QoS parameters between the first UE and a target UE, and the second QoS parameter includes QoS parameters between the communication device and the target UE. The source UE and the target UE communicate via a secondary link through the communication device. The communication device embodiment corresponds to the above-described method embodiment on the first relay UE side. All implementation processes and methods of the above method embodiment can be applied to the communication device embodiment and can achieve the same technical effect.

[0376] Alternatively, the processor is used to determine a fifth QoS parameter based on the target QoS parameter; the communication interface is used to send the fifth QoS parameter to the second relay UE, which is a relay UE connected downstream of the communication device; the target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the communication device and the target UE, and the fifth QoS parameter includes: candidate QoS parameters corresponding to the radio link between the communication device and the second relay UE, and QoS parameters between the second relay UE and the target UE; the communication device embodiment corresponds to the above-described source UE-side method embodiment, and all implementation processes and methods of the above-described method embodiment can be applied to the communication device embodiment and can achieve the same technical effect.

[0377] Alternatively, a communication interface is used to receive a sixth QoS parameter sent by a third relay UE, wherein the third relay UE is a relay UE connected one hop upstream of the communication device, and the sixth QoS parameter is a candidate QoS parameter corresponding to the radio link between the third relay UE and the communication device; a processor is used to determine the adopted QoS parameter of the radio link between the third relay UE and the communication device based on the sixth QoS parameter; the communication interface is also used to send the adopted QoS parameter to the third relay UE; the communication device embodiment corresponds to the above-described target UE-side method embodiment, and all implementation processes and methods of the above-described method embodiment can be applied to the communication device embodiment and can achieve the same technical effect.

[0378] Specifically, Figure 17 A schematic diagram of the hardware structure of a communication device to implement an embodiment of this application. For example... Figure 17 As shown, the communication device 7000 includes, but is not limited to, at least some of the following components: radio frequency unit 7001, network module 7002, audio output unit 7003, input unit 7004, sensor 7005, display unit 7006, user input unit 7007, interface unit 7008, memory 7009, and processor 7010.

[0379] Those skilled in the art will understand that the communication device 7000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 7010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 17 The communication device structure shown does not constitute a limitation on the communication device. The communication device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0380] It should be understood that, in this embodiment, the input unit 7004 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 7006 may include a display panel 7061, which 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 called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0381] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 7001 can transmit it to the processor 7010 for processing; in addition, the radio frequency unit 7001 can send uplink data to the network-side device. Typically, the radio frequency unit 7001 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0382] The memory 7009 can be used to store software programs or instructions, as well as various data. The memory 7009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 7009 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 709 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0383] Processor 7010 may include one or more processing units; optionally, processor 7010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 7010.

[0384] In this embodiment, when the communication device is the first relay UE, the radio frequency unit 7001 is used to receive a first QoS parameter sent by the first UE, where the first UE is a UE connected to the communication device one hop upstream, and the first QoS parameter includes the QoS parameter between the first UE and the target UE; the processor 7010 is used to determine a second QoS parameter based on the first QoS parameter received by the radio frequency unit 7001; the radio frequency unit 7001 is used to send the second QoS parameter determined by the processor 7010 to the second UE, where the second UE is a UE connected to the communication device one hop downstream; wherein the second QoS parameter includes the QoS parameter between the communication device and the target UE; the source UE and the target UE communicate via a secondary link through the communication device.

[0385] In the communication device provided in this application embodiment, since the communication device can receive the QoS parameters between the first UE and the target UE sent by the first UE, the communication device can further determine the QoS parameters between the communication device and the target UE. In this way, multiple UEs in the secondary link communication system can participate in the negotiation of end-to-end QoS parameter segmentation, thereby improving the accuracy of QoS parameter segmentation and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0386] Wherein, when the communication device is the source UE in the above method embodiment, the processor 7010 is used to determine the fifth QoS parameter according to the target QoS parameter;

[0387] Radio frequency unit 7001 is used to send the fifth QoS parameter determined by processor 7010 to the second relay UE, wherein the second relay UE is a relay UE connected downstream of the communication device.

[0388] The target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the communication device and the target UE. The fifth QoS parameter includes: candidate QoS parameters corresponding to the radio link between the communication device and the second relay UE, and QoS parameters between the second relay UE and the target UE.

[0389] In the communication device provided in this application embodiment, since the communication device can determine the fifth QoS parameter between the second relay UE and the target UE based on the QoS parameter between the communication device and the target UE, it can ensure that the fifth QoS parameter meets the QoS requirements of the communication device, thereby improving the accuracy of QoS parameter segmentation and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0390] Wherein, when the communication device is the target UE in the above method embodiment, the radio frequency unit 7001 is used to receive the sixth QoS parameter sent by the third relay UE, wherein the third relay UE is a relay UE connected to the upstream of the communication device, and the sixth QoS parameter is a candidate QoS parameter corresponding to the wireless link between the third relay UE and the communication device.

[0391] The processor 7010 is configured to determine the adoption QoS parameters of the wireless link based on the sixth QoS parameters received by the radio frequency unit 7001; the radio frequency unit 7001 is configured to send the adoption QoS parameters determined by the processor 7010 to the third relay UE.

[0392] In the communication device provided in this application embodiment, since the communication device can determine the adopted QoS parameters of the wireless link between the third relay UE and the communication device based on the candidate QoS parameters sent by the third relay UE, it can ensure that the adopted QoS parameters of the wireless link meet the requirements of the communication device, thereby improving the accuracy of QoS parameter segmentation and ultimately meeting the service QoS requirements between the source UE and the target UE.

[0393] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described QoS parameter segmentation method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0394] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0395] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described QoS parameter segmentation method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0396] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0397] This application also provides a computer program / program product, which is stored in a non-volatile storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-described QoS parameter segmentation method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0398] This application also provides a secondary link communication system, including: a source UE, a relay UE, and a target UE. The source UE can be used to execute the steps executed by the source UE in the above method embodiments, the relay UE can be used to execute the steps executed by the first relay UE in the above method embodiments, and the target UE is used to execute the steps executed by the target UE in the above method embodiments.

[0399] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0400] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0401] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for segmenting Quality of Service (QoS) parameters, characterized in that, include: The first relay user equipment (UE) receives the first QoS parameters sent by the first UE, wherein the first UE is a UE connected one hop upstream of the first relay UE, and the first QoS parameters include the QoS parameters between the first UE and the target UE. The first relay UE determines the second QoS parameter based on the first QoS parameter; The first relay UE sends the second QoS parameter to the second UE, where the second UE is a UE connected one hop downstream of the first relay UE; The second QoS parameter includes the QoS parameters between the first relay UE and the target UE; The source UE and the target UE communicate via a secondary link through multiple relay UEs, including the first relay UE; The first QoS parameter includes a first candidate QoS parameter and a third QoS parameter. The first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the first relay UE, and the third QoS parameter is the QoS parameter between the first relay UE and the target UE. The first relay UE determines the second QoS parameter based on the first QoS parameter, including: The first relay UE performs selection processing on the first candidate QoS parameter, and determines the second QoS parameter based on the third QoS parameter and the selected first candidate QoS parameter; The second QoS parameter includes: candidate QoS parameters corresponding to the radio link between the first relay UE and the second UE, and QoS parameters between the second UE and the target UE.

2. The method according to claim 1, characterized in that, The first relay UE determines the second QoS parameter based on the first QoS parameter, including: The first relay UE determines the second QoS parameter based on the first QoS parameter and the first candidate QoS parameter. The first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the first relay UE, and the first candidate QoS parameter is determined based on the first QoS parameter.

3. The method according to claim 2, characterized in that, The first QoS parameter includes the first candidate QoS parameter and the second QoS parameter.

4. The method according to claim 3, characterized in that, 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 ​​from the at least one set of second candidate values; Wherein, one parameter value of the first QoS parameter includes one candidate value from each set of first candidate values ​​and one candidate value from the second candidate values ​​that corresponds to the candidate value in the first candidate values.

5. The method according to any one of claims 2 to 4, characterized in that, When the first UE is the source UE, the first QoS parameter is the target QoS parameter, and the target QoS parameter corresponds to the service QoS requirements of the secondary link communication between the source UE and the target UE.

6. The method according to claim 1, characterized in that, The third QoS parameter includes: Candidate QoS parameters corresponding to the radio link between the first relay UE and the second UE; QoS parameters between the second UE and the target UE.

7. The method according to claim 1, characterized in that, The first relay UE sends the second QoS parameters to the second UE, including: If the target conditions are met, the first relay UE sends the second QoS parameters to the second UE; The target conditions include at least one of the following: There are available candidate QoS parameters for the radio link between the first UE and the first relay UE; There are available QoS parameters between the first relay UE and the target UE.

8. The method according to claim 7, characterized in that, The method further includes: If the target conditions are not met, the first relay UE sends a notification message to the first UE, the notification message being used to notify the first UE that the QoS segmentation process has failed.

9. The method according to any one of claims 1 to 4, characterized in that, After the first relay UE sends the second QoS parameter to the second UE, the method further includes: The first relay UE receives at least one set of first adoption QoS parameters sent by the second UE. Each set of first adoption QoS parameters is: the adoption QoS parameters of one hop radio link in at least one hop radio link, and the at least one hop radio link includes each hop radio link between the first relay UE and the target UE. The first relay UE determines a set of second adoption QoS parameters based on the at least one set of first adoption QoS parameters and the first QoS parameters. The set of second adoption QoS parameters is the adoption QoS parameters of the radio link between the first UE and the first relay UE. The first relay UE sends at least one set of third adoption QoS parameters to the first UE. Each set of third adoption QoS parameters includes any one of the following: a set of first adoption QoS parameters from the at least one set of first adoption QoS parameters, and a set of second adoption QoS parameters.

10. The method according to claim 9, characterized in that, The at least one set of first adoption QoS parameters includes: adoption QoS parameters for each hop of radio link between the first relay UE and the target UE; The first relay UE determines a set of second adoption QoS parameters based on the at least one set of first adoption QoS parameters and the first QoS parameters, including: The first relay UE performs segmentation processing on the first QoS parameter and the fourth QoS parameter to obtain the second set of adopted QoS parameters, wherein the fourth QoS parameter is composed of the at least one set of first adopted QoS parameters.

11. The method according to claim 9, characterized in that, The at least one set of first adoption QoS parameters includes at least: adoption QoS parameters of the radio link between the first relay UE and the second UE; The first relay UE determines a set of second adoption QoS parameters based on the at least one set of first adoption QoS parameters and the first QoS parameters, including: The first relay UE determines the second set of adopted QoS parameters from the first candidate QoS parameters based on the at least one set of first adopted QoS parameters; Wherein, the first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the first relay UE, and the first candidate QoS parameter is determined by the third UE based on the first QoS parameter, wherein the third UE includes at least one of the following: the first UE, the first relay UE.

12. A QoS parameter segmentation method, characterized in that, include: The source UE determines the fifth QoS parameter based on the target QoS parameters; The source UE sends the fifth QoS parameter to the second relay UE, where the second relay UE is a relay UE connected one hop downstream of the source UE; The target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the source UE and the target UE. The fifth QoS parameter includes: the candidate QoS parameter corresponding to the radio link between the source UE and the second relay UE, and the QoS parameter between the second relay UE and the target UE. The source UE receives at least one set of fourth adoption QoS parameters sent by the second relay UE, and the at least one set of fourth adoption QoS parameters includes: adoption QoS parameters of at least one hop radio link between the source UE and the target UE; The adoption QoS parameters for each hop of the at least one set of fourth adoption QoS parameters are: adoption QoS parameters determined by the downstream UE in the current hop of the wireless link and aggregated to the second relay UE through hierarchical reporting.

13. The method according to claim 12, characterized in that, After the source UE sends the fifth QoS parameter to the second relay UE, the method further includes: The source UE receives a target notification message sent by the second relay UE, the target notification message being used to notify the source UE that the QoS segmentation process has failed.

14. The method according to claim 13, characterized in that, After the source UE receives the target notification message sent by the second relay UE, the method further includes: The source UE releases the end-to-end connection with the target UE and / or triggers QoS parameter renegotiation with the target UE.

15. A QoS parameter segmentation device, characterized in that, The QoS parameter segmentation device includes: a receiving module, a determining module, and a sending module; The receiving module is used to receive the first QoS parameters sent by the first UE, the first UE being a UE connected to the upstream of the QoS parameter segmentation device, and the first QoS parameters including the QoS parameters between the first UE and the target UE. The determining module is used to determine the second QoS parameter based on the first QoS parameter received by the receiving module; The sending module is used to send the second QoS parameters determined by the determining module to the second UE, wherein the second UE is a UE connected to the downstream of the QoS parameter segmentation device; The second QoS parameter includes the QoS parameters between the QoS parameter segmentation device and the target UE; The source UE and the target UE communicate via secondary links through multiple relay UEs, among which the QoS parameter segmentation device is included; The first QoS parameter includes a first candidate QoS parameter and a third QoS parameter. The first candidate QoS parameter is the candidate QoS parameter corresponding to the radio link between the first UE and the QoS parameter segmentation device, and the third QoS parameter is the QoS parameter between the QoS parameter segmentation device and the target UE. The determining module is specifically used to select the first candidate QoS parameter and determine the second QoS parameter based on the third QoS parameter and the selected first candidate QoS parameter. The second QoS parameter includes: candidate QoS parameters corresponding to the radio link between the QoS parameter segmentation device and the second UE, and QoS parameters between the second UE and the target UE.

16. The apparatus according to claim 15, characterized in that, The determining module is specifically used to determine the second QoS parameter based on the first QoS parameter and the first candidate QoS parameter. The first candidate QoS parameter is a candidate QoS parameter corresponding to the wireless link between the first UE and the QoS parameter segmentation device, and the first candidate QoS parameter is determined based on the first QoS parameter.

17. The apparatus according to claim 15, characterized in that, The sending module is specifically used to send the second QoS parameter to the second UE when the target conditions are met; The target conditions include at least one of the following: There are available candidate QoS parameters in the wireless link between the first UE and the QoS parameter segmentation device; There are available QoS parameters between the QoS parameter segmentation device and the target UE.

18. The apparatus according to claim 17, characterized in that, The sending module is further configured to send a notification message to the first UE if the target condition is not met, the notification message being used to notify the first UE that the QoS segmentation process has failed.

19. The apparatus according to any one of claims 15 to 18, characterized in that, The receiving module is further configured to receive at least one set of first adoption QoS parameters sent by the second UE after the sending module sends the second QoS parameters to the second UE. Each set of first adoption QoS parameters is: the adoption QoS parameters of one hop radio link in at least one hop radio link, and the at least one hop radio link includes each hop radio link between the QoS parameter segmentation device and the target UE. The determining module is further configured to determine a set of second adoption QoS parameters based on the at least one set of first adoption QoS parameters and the first QoS parameters received by the receiving module, wherein the set of second adoption QoS parameters is the adoption QoS parameters of the wireless link between the first UE and the QoS parameter segmentation device; The sending module is further configured to send at least one set of third adoption QoS parameters to the first UE, each set of third adoption QoS parameters including any one of the following: a set of first adoption QoS parameters from the at least one set of first adoption QoS parameters, and a set of second adoption QoS parameters.

20. The apparatus according to claim 19, characterized in that, The at least one set of first adoption QoS parameters includes: adoption QoS parameters for each hop of the radio link between the QoS parameter segmentation device and the target UE; The determining module is specifically used to perform segmentation processing on the first QoS parameter and the fourth QoS parameter to obtain the second set of adopted QoS parameters, wherein the fourth QoS parameter is composed of the at least one set of first adopted QoS parameters.

21. The apparatus according to claim 19, characterized in that, The at least one set of first adoption QoS parameters includes at least: adoption QoS parameters of the radio link between the QoS parameter segmentation device and the second UE; The determining module is specifically used to determine the second set of adoption QoS parameters from the first candidate QoS parameters based on the at least one set of first adoption QoS parameters. Wherein, the first candidate QoS parameter is the candidate QoS parameter corresponding to the wireless link between the first UE and the QoS parameter segmentation device, and the first candidate QoS parameter is determined by the third UE based on the first QoS parameter, wherein the third UE includes at least one of the following: the first UE, and the QoS parameter segmentation device.

22. A QoS parameter segmentation device, characterized in that, The QoS parameter segmentation device may include: a determination module and a transmission module; The determining module is used to determine the fifth QoS parameter based on the target QoS parameter; The sending module is used to send the fifth QoS parameter determined by the determining module to the second relay UE, wherein the second relay UE is a relay UE connected one hop downstream of the QoS parameter segmentation device; The target QoS parameter is determined based on the service QoS requirements of the secondary link communication between the QoS parameter segmentation device and the target UE. The fifth QoS parameter includes: the candidate QoS parameter corresponding to the radio link between the QoS parameter segmentation device and the second relay UE, and the QoS parameter between the second relay UE and the target UE. The QoS parameter segmentation device further includes: a receiving module; The receiving module is configured to receive at least one set of fourth adoption QoS parameters sent by the second relay UE after the sending module sends the fifth QoS parameters to the second relay UE. The at least one set of fourth adoption QoS parameters includes: adoption QoS parameters of at least one hop radio link between the QoS parameter segmentation device and the target UE. The adoption QoS parameters for each hop of the at least one set of fourth adoption QoS parameters are: adoption QoS parameters determined by the downstream UE in the current hop of the wireless link and aggregated to the second relay UE through hierarchical reporting.

23. The apparatus according to claim 22, characterized in that, 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 used to notify the QoS parameter segmentation device that the QoS segmentation process has failed.

24. The apparatus according to claim 23, characterized in that, The QoS parameter segmentation device further includes a processing module, which is used to release the end-to-end connection with the target UE and / or trigger QoS parameter renegotiation with the target UE after the receiving module receives the target notification message sent by the second relay UE.

25. A communication device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the QoS parameter segmentation method as described in any one of claims 1 to 11; or to implement the steps of the QoS parameter segmentation method as described in any one of claims 12 to 14.

26. A secondary link communication system, characterized in that, It includes the QoS parameter segmentation apparatus as described in any one of claims 15 to 21 and the apparatus as described in any one of claims 22 to 24.

27. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of any one of claims 1 to 14.

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