Techniques for configuring sidelink data radio bearers for relayed communications
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2023-08-11
- Publication Date
- 2026-06-17
AI Technical Summary
Existing wireless communication systems face challenges in configuring sidelink data radio bearers (DRBs) for relayed communications, particularly in ensuring end-to-end quality of service (QoS) across multiple hops.
The proposed techniques involve a first user equipment (UE) establishing a communication link with a second UE acting as a relay. The first UE transmits end-to-end traffic information and QoS profiles to the second UE, which determines the radio link control (RLC) layer and channel configuration for the relayed communication link, ensuring compliance with end-to-end QoS requirements.
This approach enables effective coordination of RLC layer and channel configurations between UEs, thereby satisfying end-to-end QoS requirements for relayed communications, enhancing the reliability and efficiency of sidelink communications.
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Figure CN2023112492_20022025_PF_FP_ABST
Abstract
Description
TECHNIQUES FOR CONFIGURING SIDELINK DATA RADIO BEARERS FOR RELAYED COMMUNICATIONS
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including techniques for configuring sidelink data radio bearers (DRBs) for relayed communications.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .
[0004] A wireless communications system may support sidelink communication. Sidelink communication may be described as communication between two or more UEs. In some examples, UEs participating in sidelink communication may utilize one or more relay devices to increase a range of the sidelink communications. Relay devices may receive a sidelink message from a source UE and relay the sidelink message to a destination UE.SUMMARY
[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support techniques for configuring sidelink data radio bearers (DRBs) for relayed communications. In some examples, a first user equipment (UE) may establish a first communication link with a second UE. The second UE may function or operate as a relay for communications between the first UE and a third UE over an end-to end communication link. Further, the method may include the first UE transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of quality of service (QoS) profiles associated with the communication link. In some aspects, the end-to-end traffic information may include one or more QoS flow identifiers (IDs) or one or more DRB IDs, which may be used by the second UE to determine a radio link control (RLC) layer and channel configuration for a second communication link between the second UE and the third UE, and which may be mapped to a DRB of the end-to-end communication link. In some examples, the first UE may receive, from the second UE, a second message indicating configuration information for a first communication link between the first UE and the second UE (e.g., a first hop) . In some examples, the configuration information may include an indication of a first portion of QoS profiles of the set of QoS profiles that are associated with the first communication link, or an indication of an RLC layer and channel configuration for the first communications link, as determined by the second UE.
[0006] A method for wireless communications by a first UE is described. The method may include establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link, transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0007] A first UE for wireless communications is described. The first UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may be individually or collectively operable to execute the code to cause the first UE to establish a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link, transmit, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and receive, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0008] Another first UE for wireless communications is described. The first UE may include means for establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link, means for transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and means for receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0009] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors individually or collectively to establish a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link, transmit, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and receive, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0010] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link, where the end-to-end traffic information includes an indication of the mapping.
[0011] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from a network entity, a third message indicating the mapping between the one or more end-to-end QoS flow IDs and the respective end-to-end DRBs, where the mapping may be determined based on the third message.
[0012] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the mapping may be determined based on a preconfigured mapping between the one or more end-to-end QoS flow IDs and the respective end-to-end DRBs.
[0013] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first portion of end-to-end QoS profiles of the set of end-to-end QoS profiles for the first communication link based on the configuration information indicating the first portion of end-to-end QoS profiles and one or more corresponding end-to-end QoS flow IDs for the first communication link and communicating, via the second UE, with the third UE based on a first RLC layer and channel configuration for the first communication link, the first RLC layer and channel configuration mapped to an end-to-end DRB of the end-to-end communication link.
[0014] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first RLC layer and channel configuration for the first communication link based on the configuration information indicating the first RLC layer and channel configuration for the first communication link, the first RLC layer and channel configuration mapped to an end-to-end DRB of the end-to-end communication link and communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0015] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first RLC layer and channel configuration for the first communication link and a second RLC layer and channel configuration for a second communication link between the second UE and the third UE, where the first RLC layer and channel configuration and the second RLC layer and channel configuration may be based on the configuration information and a mapping between one or more end-to-end QoS flow IDs and an end-to-end DRB of the end-to-end communication link, transmitting, to the second UE, a fourth message indicating an index of the end-to-end DRB and the second RLC layer and channel configuration for the second communication link, where the second RLC layer and channel configuration may be mapped to the end-to-end DRB, and communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0016] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the configuration information includes an indication of a first portion of end-to-end QoS profiles from the set of end-to-end QoS profiles and a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles.
[0017] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles.
[0018] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link and the configuration information includes an indication of a first portion of end-to-end QoS profiles from the set of end-to-end QoS profiles and further includes a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles or a set of DRB IDs corresponding to the first portion of end-to-end QoS profiles.
[0019] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first RLC layer and channel configuration for the first communication link, where the first RLC layer and channel configuration may be for the set of end-to-end QoS flow IDs or the set of DRB IDs, transmitting, to the second UE, a fifth message indicating the first RLC layer and channel configuration, and communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0020] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link and the configuration information includes an indication of a first RLC layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end QoS flow IDs associated with the first RLC layer and channel configuration or a set of DRB IDs associated with first RLC layer and channel configuration.
[0021] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining, for the set of end-to-end QoS flow IDs or the set of DRB IDs, the first RLC layer and channel configuration for the first communication link based on the indication of the first RLC layer and channel configuration and communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0022] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to a network entity, a sixth message including the indication of the first RLC layer and channel configuration and a first portion of end-to-end QoS profiles and receiving, from the network entity, a seventh message indicating a modified RLC layer and channel configuration that may be different from the first RLC layer and channel configuration indicated by the second UE, where the determined first RLC layer and channel configuration includes the modified RLC layer and channel configuration based on the seventh message.
[0023] Some examples of the method, first UE, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to a network entity, a sixth message including the indication of the first RLC layer and channel configuration and a first portion of end-to-end QoS profiles and receiving, from the network entity, a seventh message indicating an unmodified RLC layer and channel configuration that may be the same as the first RLC layer and channel configuration indicated by the second UE, where the determined first RLC layer and channel configuration includes the unmodified RLC layer and channel configuration.
[0024] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the configuration information further includes an indication of a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles.
[0025] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the first message, the second message, or both, includes a PC5 radio resource control (RRC) message or a PC5 signaling message.
[0026] A method for wireless communications by a first UE is described. The method may include establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link, receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0027] A first UE for wireless communications is described. The first UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may be individually or collectively operable to execute the code to cause the first UE to establish a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link, receive, from the second UE, a first message indicating end- to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and transmit, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0028] Another first UE for wireless communications is described. The first UE may include means for establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link, means for receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and means for transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0029] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors individually or collectively to establish a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link, receive, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, and transmit, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0030] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the end-to-end traffic information includes an indication of a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for identifying an end-to-end DRB of the end-to-end communication link based on the mapping and determining, for the identified end-to-end DRB, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles may be associated with the first communication link and the second portion of end-to-end QoS profiles may be associated with a second communication link between the first UE and the third UE.
[0031] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first RLC layer and channel configuration for the first communication link, or a second RLC layer and channel configuration for the second communication link, or both.
[0032] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the configuration information includes an indication of the first portion of end-to-end QoS profiles and one or more corresponding end-to-end QoS flow IDs for the first communication link and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration for the second communication link.
[0033] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the configuration information includes an indication of the first RLC layer and channel configuration for the first communication link and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration for the second communication link.
[0034] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the first RLC layer and channel configuration or the second RLC layer and channel configuration, or both, may be determined based on signaling from a network entity, or one or more preconfigured RLC layer and channel configurations, or any combination thereof.
[0035] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the end-to-end traffic information of includes one or more QoS flow IDs corresponding to the set of end-to-end QoS profiles and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for determining, based on the set of end-to-end QoS profiles and the one or more QoS flow IDs, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles may be associated with the first communication link and the second portion of end-to-end QoS profiles may be associated with a second communication link between the first UE and the third UE, where the configuration information includes an indication of the first portion of end-to-end QoS profiles and a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles.
[0036] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the second UE, a fourth message indicating an index of an end-to-end DRB of the end-to-end communication link and an indication of a second RLC layer and channel configuration for the second communication link, where the second RLC layer and channel configuration may be mapped to the end-to-end DRB, determining the second RLC layer and channel configuration based on the indication of the second RLC layer and channel configuration, and relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration.
[0037] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to a network entity, an eighth message including the indication of the second RLC layer and channel configuration and receiving, from the network entity, a ninth message indicating a modified RLC layer and channel configuration that may be different from the second RLC layer and channel configuration indicated by the second UE, where the determined second RLC layer and channel configuration includes the modified RLC layer and channel configuration.
[0038] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the eighth message further includes an indication of the second portion of end-to-end QoS profiles for the second communication link.
[0039] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to a network entity, an eighth message including the indication of the second RLC layer and channel configuration and receiving, from the network entity, a ninth message indicating an unmodified RLC layer and channel configuration that may be the same as the second RLC layer and channel configuration indicated by the second UE, where the determined second RLC layer and channel configuration includes the unmodified RLC layer and channel configuration.
[0040] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for determining a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles may be associated with the first communication link and the second portion of end-to-end QoS profiles may be associated with a second communication link between the first UE and the third UE, and where the configuration information includes an indication of the first portion of end-to-end QoS profiles and further indicates a first set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles or a set of DRB IDs corresponding to the first portion of end-to-end QoS profiles.
[0041] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the second UE, a fifth message indicating a first RLC layer and channel configuration for the first communication link, where the first RLC layer and channel configuration may be based on the first set of end-to-end QoS flow IDs or the set of DRB IDs, determining a second RLC layer and channel configuration for the second communication link based on the first RLC layer and channel configuration, the second portion of end-to-end QoS profiles, the set of DRB IDs, or any combination thereof, and relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration.
[0042] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, determining the second RLC layer and channel configuration may include operations, features, means, or instructions for determining, for a second portion of end-to-end QoS flows, the second RLC layer and channel configuration for the second communication link based on the first RLC layer and channel configuration and the second portion of end-to-end QoS profiles.
[0043] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to a network entity, an tenth message indicating the second portion of end-to-end QoS profiles and receiving, from the network entity, an eleventh message indicating the second RLC layer and channel configuration that may be based on the second portion of end-to-end QoS profiles, where the second RLC layer and channel configuration may be determined based on the eleventh message.
[0044] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for storing a first mapping between the first RLC layer and channel configuration and the first communication link and a second mapping between the second RLC layer and channel configuration and the second communication link.
[0045] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, determining the second RLC layer and channel configuration may include operations, features, means, or instructions for determining, for the set of DRB IDs, the second RLC layer and channel configuration for the second communication link.
[0046] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from a network entity, a twelfth message indicating the second RLC layer and channel configuration, where the second RLC layer and channel configuration may be determined based on the twelfth message.
[0047] In some examples of the method, first UEs, and non-transitory computer-readable medium described herein, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link and the configuration information includes an indication of a first RLC layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end QoS flow IDs associated with the first RLC layer and channel configuration or a set of DRB IDs associated with the first RLC layer and channel configuration.
[0048] Some examples of the method, first UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles may be associated with the first communication link and the second portion of end-to-end QoS profiles may be associated with a second communication link between the first UE and the third UE, determining the first RLC layer and channel configuration for the first communication link and a second RLC layer and channel configuration for the second communication link, and relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration.
[0049] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the first RLC layer and channel configuration or the second RLC layer and channel configuration, or both, may be determined based on signaling from a network entity, or one or more preconfigured RLC layer and channel configurations, or any combination thereof.
[0050] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the configuration information further includes an indication of the first portion of end-to-end QoS profiles and the second portion of end-to-end QoS profiles.
[0051] In some examples of the method, first UE, and non-transitory computer-readable medium described herein, the first message, the second message, or both, includes a PC5 RRC message or a PC5 signaling message.BRIEF DESCRIPTION OF THE DRAWINGS
[0052] FIGs. 1 and 2 show examples of a wireless communications system that supports techniques for configuring sidelink data radio bearers (DRBs) for relayed communications in accordance with one or more aspects of the present disclosure.
[0053] FIGs. 3 through 7 show examples of process flows that support techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure.
[0054] FIGs. 8 and 9 show block diagrams of devices that support techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure.
[0055] FIG. 10 shows a block diagram of a communications manager that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure.
[0056] FIG. 11 shows a diagram of a system including a device that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure.
[0057] FIGs. 12 through 15 show flowcharts illustrating methods that support techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0058] A wireless communications system may support sidelink communication. Sidelink communication may be described as communication between two wireless devices (e.g., user equipment (UEs) ) . To increase coverage of sidelink communications, a pair of UEs may utilize a relay UE. The relay UE may relay traffic between a first UE (e.g., a source UE) and a second UE (e.g., a destination UE) . In such cases, respective communication links may be established between the source UE and the relay UE and between the relay UE and the destination UE, where the respective communication links may be referred to as “hops” or some similar terminology. In some examples, the relay UE may support Layer-2 signal relaying. To support end-to-end quality of service (QoS) for the Layer-2 signal relaying, the relay UE may configure a radio link control (RLC) layer channel for a second hop (e.g., from relay UE to destination UE) of an end-to-end communication link (e.g., from the source UE to the destination UE) that satisfies the end-to-end QoS requirements. However, the relay UE may not be aware of a mapping between end-to-end QoS flow identifiers (IDs) and end-to-end data radio bearers (DRBs) (e.g., for a first hop between the source UE and the relay UE, which may be determined by the source UE) , and the relay UE may be unable to configure the RLC channel for the second hop in a way that meets the end-to-end QoS service requirements for the end-to-end communication link between the source and the destination UEs.
[0059] As described herein, the relay UE may receive QoS profiles and traffic information (e.g., QoS flow IDs and DRB IDs) such that the relay UE may derive the RLC channel configuration for the second hop. In one example, the source UE may transmit, to the relay UE, signaling indicating a mapping between QoS flow IDs and DRB IDs as well as signaling indicating QoS flow IDs and corresponding QoS profiles. Based on the signaling, the relay UE may derive one or both of the RLC channel configuration for the first hop or the second hop. In another example, the source UE may transmit, to the relay UE, signaling indicating QoS flow IDs and corresponding QoS profiles. Based on the signaling, the relay UE may derive a QoS profile per hop and transmit the per-hop QoS to the source UE such that the source UE may derive the RLC channel configuration for both hops. Using the methods as described herein may enable coordination of RLC layer and channel configurations between UEs, which may satisfy end-to-end QoS requirements for relayed communications (e.g., for layer-2-based relaying) .
[0060] Aspects of the disclosure are initially described in the context of wireless communications systems. Additional aspects are described in the context of process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to techniques for configuring sidelink DRBs for relayed communications.
[0061] FIG. 1 shows an example of a wireless communications system 100 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0062] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0063] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.
[0064] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0065] In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) , one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0066] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140) .
[0067] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0068] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., RLC layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more RUs 170) . In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.
[0069] In wireless communications systems (e.g., wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140) . The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120) . IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.
[0070] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support techniques for configuring sidelink DRBs for relayed communications as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180) .
[0071] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
[0072] The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0073] The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105) .
[0074] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0075] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0076] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0077] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0078] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
[0079] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.
[0080] Some UEs 115, such as MTC or IoT devices, may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) . M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a network entity 105 (e.g., a base station 140) without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that uses the information or presents the information to humans interacting with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
[0081] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0082] In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0083] In some systems, a D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) . In some examples, vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., network entities 105, base stations 140, RUs 170) using vehicle-to-network (V2N) communications, or with both.
[0084] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0085] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0086] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0087] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0088] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0089] The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.
[0090] The wireless communications system 100 may support techniques for coordinating RLC channel configurations that support end-to-end QoS requirements. As described herein, a first UE 115 may establish a first communication link with a second UE 115. The second UE 115 may function or operate as a relay for communications between the first UE 115 and a third UE 115 over an end-to end communication link. Further, the method may include the first UE 115 transmitting, to the second UE 115, a first message indicating end-to-end traffic information and a set of QoS profiles associated with the communication link. In some aspects, the end-to-end traffic information may include one or more QoS flow IDs or one or more DRB IDs, which may be used by the second UE 115 to determine a RLC layer and channel configuration for a second communication link between the second UE 115 and the third UE 115, and which may be mapped to a DRB of the end-to-end communication link. In some examples, the first UE 115 may receive, from the second UE 115, a second message indicating configuration information for a first communication link between the first UE 115 and the second UE 115 (e.g., for a first hop) . In some examples, the configuration information may include an indication of a first portion of QoS profiles of the set of QoS profiles that are associated with the first communication link, or an indication of an RLC layer and channel configuration for the first communications link, as determined by the second UE 115.
[0091] FIG. 2 shows an example of a wireless communications system 200 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. In some examples, the wireless communications system 200 may support aspects of a wireless communications system 100. For example, the wireless communications system 200 may include UEs 215 which may be examples of UEs 115 as described with reference to FIG. 1.
[0092] In some examples, the wireless communications system 200 may support sidelink communication. Sidelink communication may be described as communication between two or more UEs. In the example of FIG. 2, sidelink communication may include communication between the UE 215-a and the UE 215-c. However, in some cases, the UE 215-a and the UE 215-c may be out of range from one another and may be unable to communicate via sidelink or, in another case, a direct communication link between the UE 215-a and the UE 215-c may be blocked (e.g., by some physical object) causing sidelink communication between the UE 215-a and the UE 215-c to fail. In such scenarios, the UE 215-a and the UE 215-c may utilize the UE 215-b (e.g., a relay UE) to perform sidelink communications with one another.
[0093] The purpose of the relay UE may be to relay messages from a source UE (e.g., the UE 215-a) and a destination UE (e.g., the UE 215-c) . As an example, the UE 215-a may transmit a message to the UE 215-b via a link 205-a (or a first hop) and the UE 215-b may relay the message to the UE 215-c via a link 205-b (or a second hop) . The UE 215-b may be located in a different area or location than the UE 215-a and the UE 215-c (e.g., between the UE 215-a and the UE 215-c) which may increase coverage for the UE 215-a and the UE 215-c or may allow the UE 215-a and the UE 215-c to avoid obstacles that would otherwise block sidelink communications between the UE 215-a and the UE 215-c. To utilize the UE 215-b for sidelink communications between the UE 215-a and the UE 215-c, the UE 215-a, the UE 215-b, and the UE 215-c may undergo one or more operations including relay discovery, route discovery and selection, per-hop link (or link 205-a and link 205-b) setup, end-to-end link (or link 205-c) setup, and end-to-end QoS management.
[0094] In some cases, the UEs (e.g., the UE 215-a, the UE 215-b, and / or the UE 215-c) may support a different relaying techniques, which may be associated with different protocol stacks. For example, layer-3 relaying may be associated with layer-3 relay protocol stacks (e.g., including control plane (PC5-S, PC5-RRC) and user plane protocol stacks) , whereas layer-2 relaying may be associated with layer-2 protocol stacks (e.g., including control plane (PC5-S, PC5-RRC) and user plane protocol stacks) . The layer-3 protocol stack may include a physical (PHY) layer, a MAC layer, an RLC layer, a sidelink relay adaptation (SRAP) layer, a packet data convergence protocol (PDCP) layer, and a ProSe Sidelink (PC5) layer for control plane (e.g., PCS-signaling (PC5-S) or PCS-RRC) or an IP / non-IP layer for the user plane. Alternatively, the layer-2 protocol stack may include the PHY layer, the MAC layer, the RLC layer, and the SRAP layer. The link 205-c (e.g., end-to-end communication link) between the UE 215-a and the UE 215-c may support the PC5 layer and the PDCP layer, whereas a link 205-a (a first communication link, a first portion of the link 205-c, a first hop) between the UE 215-a and the UE 215-b as well as the link 205-b (a second communication link, a second portion of the link 205-c, a second hop) between the UE 215-b and the UE 215-c may not support the PC5 layer and the PDCP layer.
[0095] In some examples, the UE 215-a and UE 215-c may utilize one or more DRBs (e.g., end-to-end sidelink (SL) DRBs) to communicate with one another over the PDCP layer and PC5 layer of the layer-3 protocol stack using link 205-c (or end-to-end communication link) . Further, each DRB of the one or more DRBs may be mapped to one or more QoS flows (e.g., end-to-end QoS flows) . QoS flows may allow for prioritization of different applications, users, or data flow or may guarantee a certain level of performance to a data flow. The types of QoS flows may include guaranteed bit rate (GBR) QoS flow, Non-GBR QoS flow, or Delay Critical QoS flow. Further, each QoS flow may be characterized by a QoS profile. The QoS profile may include PC5 QoS parameters such as PC5 QoS Indicator (PQI) , PC5 flow bit rates, PC5 link aggregated bit rates, range, and default values. PQI may be known as a special 5QI and may be used as a reference to PC5 QoS characteristics such as resource type (e.g., GBR, Delay Critical, or Non-GBR) , priority level, packet delay budget, packet error rate, averaging window, or maximum data burst volume.
[0096] To enforce end-to-end QoS for sidelink communications between the UE 215-a and the UE 215-c, an RLC layer and channel corresponding to the link 205-a and a RLC layer and channel corresponding to the link 205-b may be configured to satisfy QoS requirements. However, the UE 215-b may be unable to configure the RLC layer and channel corresponding to the link 205-b because the UE 215-b may not have access to traffic information for configuring the RLC layer and channel corresponding to the link 205-b.
[0097] As described herein, the UE 215-b may obtain traffic information 210 and utilize the traffic information 210 to configure the RLC layer and channel for the link 205-b such that the RLC layer and channel adheres to QoS requirements. The traffic information 210 may refer to end-to-end traffic information and may relate to the link 205-c. As one option, a channel configuration component 220 of the UE 215-a may derive an RLC layer and channel configuration for the link 205-b based on receiving signaling from the UE 215-a indicating a mapping between QoS flow IDs and DRB IDs (or end-to-end traffic information) and splitting the QoS profile corresponding to the QoS flow for each DRB into QoS flows for the link 205-a and QoS flows for the link 205-b as described in more detail in FIG. 3.
[0098] Additionally, or alternatively, the UE 215-a may derive an RLC layer and channel configuration for the link 205-a and an RLC layer and channel configuration for the link 205-b and provide the RLC configuration for the link 205-b to the UE 215-b as described in more detail in FIG. 4. Additionally, or alternatively, the UE 215-a derives an RLC layer and channel configuration for the link 205-a and provides the RLC layer and channel configuration to the UE 215-b as well as corresponding QoS flow IDs such that the UE 215-b may derive the RLC layer and channel configuration for the link 205-b as described in more detail in FIG. 5.
[0099] Additionally, or alternatively, the UE 215-b may derive an RLC layer and channel configuration for the link 205-a and an RLC layer and channel configuration for the link 205-b and provides the RLC layer and channel configuration for the link 205-a to the UE 215-a as well as corresponding QoS flow IDs or DRB IDs as described in more detail in FIG. 6. In some examples, there may be multiple DRBs configured for the link 205-c. In such case, the UE 215-a or the UE 215-b may determine multiple RLC layer and channel configurations (e.g., using the above described methods) for each of the links 205-a and 205-b for each DRB of the multiple DRBs.
[0100] The UE 215-a may then transmit one or more packets to the UE 215-b using the RLC layer and channel configuration for the link 205-a and the UE 215-b may forward the one or more packets to the UE 215-c using the RLC layer and channel configuration for the link 205-b. Using the method as described herein may allow a relay UE to adhere to layer-3 QoS requirements during sidelink communication.
[0101] FIG. 3 shows an example of a process flow 300 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. In some examples, the process flow 300 may implement, or be implemented by, aspects of a wireless communications system 100 and a wireless communications system 200. For example, the process flow 300 may be performed by UEs 315 which may be examples of UEs 115 or UEs 215 as described with reference to FIGs. 1 and 2. Alternative examples of the following may be implemented, where some steps are performed in a different order then described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
[0102] As described with reference to FIG. 2, a wireless communications system may support sidelink communication. In the example of FIG. 3, sidelink communication may occur between a UE 315-a (e.g., a source UE) and a UE 315-c (e.g., a destination UE) with the UE 315-b acting as a relay between the UE 315-a and the UE 315-c.
[0103] At 305, the UE 315-a may transmit first signaling to the UE 315-b indicating a mapping between one or more QoS flows and one or more DRBs. As one example, the first signaling may indicate that a first PC5 QoS flow ID (e.g., PFI#1) , a second PC5 QoS flow ID (e.g., PFI#2) , and a third PC5 QoS flow ID (e.g., PFI#3) is mapped to a first end-to-end SL-DRB ID (e.g., DRB#1) . In some examples, the UE 315-a may receive the mapping from a network entity or the UE 315-a may be preconfigured with the mapping. Further, the UE 315-a may transmit the first signaling including the mapping to the UE 315-b via a PC5-RRC message or a PC5-S message.
[0104] At 310, the UE 315-a may transmit second signaling to the UE 315-b indicating the one or more QoS flows (or QoS flow IDs) and corresponding QoS profiles. In some examples, the UE 315-a may transmit the second signaling to the UE 315-b via a PC5-RRC message or a PC5-S message.
[0105] At 320, using one or both of the first signaling or the second signaling, the UE 315-b may derive (e.g., determine) the one or more DRBs and additionally, derive the QoS profiles for each of the one or more DRBs.
[0106] At 325, the UE 315-b may split the QoS profiles for each DRB of the one or more DRBs into per-hop QoS profiles. In the example of FIG. 3, the UE 315-a may communicate with the UE 315-c in two hops. A first hop may refer to communication between the UE 315-a and the UE 315-b and a second hop may refer to communication between the UE 315-b and the UE 315-c. Thus, for each DRB, the UE 315-b may split the QoS profiles into a first portion of QoS profiles for the first hop and a second portion of QoS profiles for the second hop.
[0107] Further, the UE 315-b may derive RLC layer and channel configurations for one or both of the first hop or the second hop. As one example, at 330-a, the UE 315-b may utilize one or both of the first signaling or the signaling to derive the RLC layer and channel configuration for the second hop. After deriving the RLC layer and channel configuration for the second hop, the UE 315-b may transmit third signaling to the UE 315-a indicating the first portion of QoS profiles for the first hop as well as the QoS flows (e.g., one or more QoS flow IDs) corresponding to the QoS profiles. In some examples, the UE 315-b may transmit the third signaling to the UE 315-a via a PC5-S message or an PC5-RRC message. Using the third signaling, the UE 315-a may derive (e.g., determine) the RLC layer and channel configuration for the first hop.
[0108] Alternatively, at 330-b, the UE 315-b may derive the RLC layer and channel configuration for the first hop using the first portion of QoS profiles corresponding to the first hop and additionally, derive the RLC layer and channel configuration for the second hop using the second portion of QoS profiles corresponding the second hop. Further, the UE 315-b may transmit fourth signaling to the UE 315-a indicating the RLC layer and channel configuration for the first hop. In some examples, the UE 315-b may transmit the fourth signaling to the UE 315-a via a PC5-S message or an PC5-RRC message.
[0109] In either of 330-a or 330-b, the UE 315-b may obtain the RLC layer and channel configuration for one or both of the RLC layer and channel configuration for the first hop or the RLC layer and channel configuration for the second hop from a network entity. For example, the UE 315-b may transmit the second portion of QoS profiles corresponding to the second hop to the network entity. The network entity may derive the RLC layer and channel configuration for the second hop and transmit fifth signaling to the UE 315-b indicating the RLC layer and channel configuration for the second hop. Alternatively, the UE 315-b may obtain the RLC layer and channel configuration for the first hop or the RLC layer and channel configuration for the second hop using preconfiguration.
[0110] At 335, the UE 315-a may transmit packets to the UE 315-b using the RLC layer and channel configuration for the first hop and the UE 315-b may relay the packets to the UE 315-c using the RLC layer and channel configuration for the second hop.
[0111] FIG. 4 shows an example of a process flow 400 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. In some examples, the process flow 400 may implement, or be implemented by, aspects of a wireless communications system 100, a wireless communications system 200, or a process flow 300. For example, the process flow 400 may be performed by UEs 415 which may be examples of UEs 115, UEs 215, or UEs 315 as described with reference to FIGs. 1 through 3. Alternative examples of the following may be implemented, where some steps are performed in a different order then described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
[0112] As described with reference to FIG. 2, a wireless communications system may support sidelink communication. In the example of FIG. 4, sidelink communication may occur between a UE 415-a (e.g., a source UE) and a UE 415-c (e.g., a destination UE) with the UE 415-b acting as a relay between the UE 415-a and the UE 415-c.
[0113] At 405, the UE 415-a may transmit first signaling indicating QoS profiles and corresponding QoS flows (or QoS flow IDs) to the UE 415-b. In some examples, the UE 415-a may transmit the first signaling to the UE 415-b using a PC5-S message or a PC5-RRC message.
[0114] At 410, the UE 415-b may split the QoS profiles into per-hop QoS profiles. In the example of FIG. 4, the UE 415-a may communicate with the UE 415-c in two hops. A first hop may refer to communication between the UE 415-a and the UE 415-b and a second hop may refer to communication between the UE 415-b and the UE 415-c. Thus, the UE 415-b may split the QoS profiles into a first portion of QoS profiles for the first hop and a second portion of QoS profiles for the second hop.
[0115] At 420, the UE 415-b may transmit second signaling indicating the first portion of QoS profiles for the first hop as well as the corresponding QoS flows to the UE 415-a. In some examples, the UE 415-b may transmit the second signaling to the UE 415-a using a PC5-S message or a PC5-RRC message.
[0116] At 425, the UE 415-a may derive an RLC layer and channel configuration for the first hop and an RLC layer and channel configuration for the second hop using a mapping between one or more DRBs and one or more QoS flows.
[0117] At 430, the UE 415-a may transmit third signaling indicating the RLC layer and channel configuration for the second hop as well of the one or more DRBs (or one or more DRB IDs) to the UE 415-b. In some examples, the UE 415-a may transmit the third signaling to the UE 415-b using a PC5-S message or a PC5-RRC message.
[0118] At 435, the UE 415-a may utilize (or take into account) the RLC layer and channel configuration for the second hop to derive a second RLC layer and channel configuration for the second hop for the one or more DRBs. In some examples, the UE 415-a may transmit fourth signaling to a network entity indicating the RLC layer and channel configuration received from the UE 415-a and optionally, the second portion of QoS profiles for the second hop. The network entity may utilize the fourth signaling to derive the second RLC layer and channel configuration and transmit fifth signaling to the UE 415-b indicating the second RLC layer and channel configuration.
[0119] At 440, the UE 415-a may transmit packets to the UE 415-b using the RLC layer and channel configuration for the first hop and the UE 415-b may relay the packets to the UE 415-c using the second RLC layer and channel configuration for the second hop.
[0120] FIG. 5 shows an example of a process flow 500 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. In some examples, the process flow 500 may implement, or be implemented by, aspects of a wireless communications system 100, a wireless communications system 200, a process flow 300, and a process flow 400. For example, the process flow 500 may be performed by UEs 515 which may be examples of UEs 115, UEs 215, UEs 315, or UEs 415 as described with reference to FIGs. 1 through 4. Alternative examples of the following may be implemented, where some steps are performed in a different order then described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
[0121] As described with reference to FIG. 2, a wireless communications system may support sidelink communication. In the example of FIG. 5, sidelink communication may occur between a UE 515-a (e.g., a source UE) and a UE 515-c (e.g., a destination UE) with the UE 515-b acting as a relay between the UE 515-a and the UE 515-c.
[0122] At 505, the UE 515-a may transmit first signaling indicating one or more QoS profiles and corresponding QoS flows (or QoS flow IDs) or corresponding DRBs (or DRB IDs) to the UE 515-b. In some examples, the UE 515-a may transmit the first signaling to the UE 515-b via a PC5-S message or a PC5-RRC message.
[0123] At 510, the UE 515-b may split the QoS profiles into per-hop QoS profiles. In the example of FIG. 5, the UE 515-a may communicate with the UE 515-c in two hops. A first hop may refer to communication between the UE 515-a and the UE 515-b and a second hop may refer to communication between the UE 515-b and the UE 515-c. Thus, the UE 515-b may split the QoS profiles into a first portion of QoS profiles for the first hop and a second portion of QoS profiles for the second hop.
[0124] At 520, the UE 515-b may transmit second signaling indicating the first portion of QoS profiles for the first hop as well as the corresponding QoS flows or DRBs to the UE 515-a. In some examples, the UE 515-b may transmit the second signaling to the UE 515-a via a PC5-S message or a PC5-RRC message.
[0125] At 525, using the second signaling, the UE 515-a may derive an RLC layer and channel configuration for the first hop for the corresponding QoS flows or the DRBs.
[0126] At 530, the UE 515-a may transmit third signaling indicating the RLC layer and channel configuration for the first hop to the UE 515-b. In some examples, the UE 515-a may transmit the third signaling to the UE 515-b via a PC5-S message or a PC5-RRC message.
[0127] At 535, the UE 515-b may derive an RLC layer and channel configuration for the second hop. For example, the UE 515-b may utilize (or take into account) the RLC layer and channel configuration for the first hop and the QoS profiles for the second hop to derive (e.g., determine) the RLC layer and channel configuration for the second hop for the corresponding QoS flows or DRBs. In some examples, the UE 515-b may transmit the second portion of QoS profiles for the second hop to a network entity. Using the second portion of QoS profiles for the second hop, the network entity may derive the RLC layer and channel configuration for the second hop for the QoS flows or DRBs and transmit fourth signaling to the UE 515-b indicating the RLC layer and channel configuration for the second hop.
[0128] At 540, the UE 515-a may transmit packets to the UE 515-b using the RLC channel configuration for the first hop and the UE 515-b may relay the packets to the UE 515-c using the RLC layer and channel configuration for the second hop. In some examples, the UE 515-b may maintain the mapping between an RLC layer and channel configuration and a respective hop. That is, the UE 515-b may store (e.g., in one or more memories) one or more mapping configurations for use with future communications in which the UE 515-b operates as a relay UE (e.g., between the UE 515-a and the UE 515-c) .
[0129] FIG. 6 shows an example of a process flow 600 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. In some examples, the process flow 600 may implement, or be implemented by, aspects of a wireless communications system 100, a wireless communications system 200, a process flow 300, a process flow 400, and a process flow 600. For example, the process flow 600 may be performed by UEs 615 which may be examples of UEs 115, UEs 215, UEs 315, UEs 415, or UEs 515 as described with reference to FIGs. 1 through 5. Alternative examples of the following may be implemented, where some steps are performed in a different order then described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
[0130] As described with reference to FIG. 2, a wireless communications system may support sidelink communication. In the example of FIG. 6, sidelink communication may occur between a UE 615-a (e.g., a source UE) and a UE 615-c (e.g., a destination UE) with the UE 615-b acting as a relay between the UE 615-a and the UE 615-c.
[0131] At 605, the UE 615-a may transmit first signaling indicating QoS profiles and corresponding QoS flows (or QoS flow IDs) or DRBs (or DRB IDs) to the UE 615-b. In some examples, the UE 615-a may transmit the first signaling via a PC5-S message or a PC5-RRC message.
[0132] At 610, the UE 615-b may split the QoS profiles into per-hop QoS profiles. In the example of FIG. 6, the UE 615-a may communicate with the UE 615-c in two hops. A first hop may refer to communication between the UE 615-a and the UE 615-b and a second hop may refer to communication between the UE 615-b and the UE 615-c. Thus, the UE 615-b may split the QoS profiles into a first portion of QoS profiles for the first hop and a second portion of QoS profiles for the second hop.
[0133] At 620, the UE 615-b may derive an RLC layer and channel configuration for the first hop (e.g., using the first portion of QoS profiles corresponding to the first hop) and the RLC layer and channel configuration for the second hop (e.g., using the second portion of QoS profiles corresponding to the second hop) for the corresponding QoS flows or DRBs.
[0134] At 625, the UE 615-b may transmit second signaling to the UE 615-a indicating the RLC layer and channel configuration for the first hop as well as the corresponding QoS flows or the DRBs. Further, the second signaling may optionally include the first portion or the second portion of QoS profiles. In some examples, the UE 615-b may transmit the second signaling via a PC5-S message or a PC5-RRC message.
[0135] At 630, the UE 615-a may utilize (or take into account) the RLC layer and channel configuration for the first hop received from the UE 615-b to derive (e.g., determine) a second RLC layer and channel configuration for the first hop for the corresponding QoS flows or DRBs. In some examples, the UE 615-b may transmit third signaling to a network entity indicating the RLC layer and channel configuration for the first hop as well as QoS profiles for the first hop. The network entity may utilize the third signaling to derive the second RLC layer and channel configuration for the first hop and transmit fourth signaling to the UE 615-b indicating the second RLC layer and channel configuration for the first hop.
[0136] At 635, the UE 615-a may transmit packets to the UE 615-b using the second RLC layer and channel configuration for the first hop and the UE 615-b may relay the packets to the UE 615-c using the RLC layer and channel configuration for the second hop.
[0137] FIG. 7 shows an example of a process flow 700 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. In some examples, the process flow 700 may implement, or be implemented by, aspects of a wireless communications system 100, a wireless communications system 200, a process flow 300, a process flow 400, a process flow 500, and a process flow 600. For example, the process flow 700 may be performed by UEs 715 which may be examples of UEs 115, UEs 215, UEs 315, UEs 415, UEs 515, and UEs 615 as described with reference to FIGs. 1 through 6. Alternative examples of the following may be implemented, where some steps are performed in a different order then described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
[0138] At 705, a UE 715-a (a source UE or a remote UE) may establish a first communication link with a UE 715-b (a relay UE) . Further, the UE 715-b may establish a second communication link with a UE 715-c (a destination UE or a target UE) . The UE 715-b may operate as a relay for communications between the UE 715-a and the UE 715-c. Communications between the UE 715-a and the UE 715-c may be associated with an end-to-end communication link.
[0139] At 710, the UE 715-a may transmit signaling indicating traffic load information and a set of end-to-end QoS profiles associated with the end-to-end communication link. In some examples, the UE 715-a may determine a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link and the traffic load information may include an indication of the mapping. In some examples, the UE 715-a may receive signaling from a network entity indicating the mapping or the UE 715-a may determine the mapping based on a pre-configured mapping between the one or more end-to-end QoS flow IDs and respective end-to-end DRBs. Further, in some examples, the traffic load information may include one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles. Additionally, or alternatively, the traffic load information may include one or more DRB IDs associated with the end-to-end communication link. In some examples, the UE 715-a may transmit the traffic load information via a PC5-RRC message or a PC5-S message.
[0140] At 720, the UE 715-b may split the set of end-to-end QoS profiles. For example, the UE 715-b may identify an end-to-end DRB of the end-to-end communication link based on the mapping and determine, for the identified end-to-end DRB, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles. The first portion may be associated with the first communication link and the second portion may be associated with the second communication link. In some examples, the UE 715-b may determine a second RLC layer and channel configuration for the second communication link based on the traffic load information, signaling from a network entity, or preconfigured RLC layer and channel configurations.
[0141] At 725, the UE 715-b may transmit configuration information to the UE 715-a for a first portion of the end-to-end communication link or the first communication link. In one example, the configuration information may include an indication of one or both of the first portion of the end-to-end QoS profiles or the second portion of the end-to-end QoS profiles. Further, the channel configuration information may include a set of end-to-end QoS flow IDs corresponding to the first portion. Additionally, or alternatively, the configuration information may include a set of DRBs IDs corresponding to the first portion of end-to-end QoS profiles. In some examples, the UE 715-b may transmit the configuration information via a PC5-RRC message or a PC5-S message.
[0142] In some examples, the UE 715-a may determine a first RLC layer and channel configuration for the first communication link. In some examples, the UE 715-a may determine the first RLC layer and channel configuration based on the configuration information received from the UE 715-b at 725. In some examples, the UE 715-a may transmit signaling to the UE 715-b indicating the first RLC layer and channel configuration and the UE 715-b may determine the second RLC layer and channel configuration based on the first RLC layer and channel configuration. In some examples, the UE 715-b may store a first mapping between the first RLC layer and channel configuration and the first communication link and a second mapping between the second RLC layer and channel configuration and the second communication link.
[0143] In another example, the UE 715-b may determine the first RLC layer and channel configuration based on the first portion of end-to-end QoS profiles and transmit signaling to the UE 715-a indicating the first RLC layer and channel configuration. In some examples, after receiving the first RLC layer and channel configuration, the UE 715-a may update the first RLC and channel configuration based on the configuration information. The UE 715-a may update (or modify) the first RLC layer and channel configuration by transmitting the first RLC layer and channel configuration received from the UE 715-b to a network entity along with the configuration information and receiving an updated (or modified) first RLC layer and channel configuration. In some examples, the modified first RLC layer and channel configuration is the same or different from the first RLC layer and channel configuration received by the UE 715-a from the UE 715-b. In some examples, the first RLC layer and channel configuration may be for the set of end-to-end QoS flow IDs or the set of DRB IDs.
[0144] In some examples, the UE 715-a may determine the first RLC layer and channel configuration and a second RLC layer and channel configuration for the second communication link based on the configuration information received from the UE 715-b at 725. Further, the UE 715-a may transmit signaling to the UE 715-b indicating one or both of an index of an end-to-end DRB and the second RLC layer and channel configuration. The second RLC layer and channel configuration may be mapped to the end-to-end DRB. In some examples, based on receiving the second RLC layer and channel configuration, the UE 715-b may update the second RLC and channel configuration. The UE 715-b may update (or modify) the second RLC layer and channel configuration by transmitting the second RLC layer and channel configuration received from the UE 715-a to a network entity and receiving the updated (or modified) second RLC layer and channel configuration. In some examples, the modified second RLC layer and channel configuration is the same or different as the second RLC layer and channel configuration received by the UE 715-b from the UE 715-a.
[0145] At 730, the UE 715-a may communicate with the UE 715-c. For example, the UE 715-a may transmit packets to the UE 715-b based on the first RLC layer and channel configuration and the UE 715-b may relay the packets to the UE 715-c based on the second RLC layer and channel configuration.
[0146] FIG. 8 shows a block diagram 800 of a device 805 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805, or one or more components of the device 805 (e.g., the receiver 810, the transmitter 815, and the communications manager 820) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0147] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for configuring sidelink DRBs for relayed communications) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0148] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for configuring sidelink DRBs for relayed communications) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0149] The communications manager 820, the receiver 810, the transmitter 815, or various combinations thereof or various components thereof may be examples of means for performing various aspects of techniques for configuring sidelink DRBs for relayed communications as described herein. For example, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0150] In some examples, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0151] Additionally, or alternatively, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor. If implemented in code executed by at least one processor, the functions of the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0152] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0153] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The communications manager 820 is capable of, configured to, or operable to support a means for receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0154] Additionally, or alternatively, the communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link. The communications manager 820 is capable of, configured to, or operable to support a means for receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0155] By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 (e.g., at least one processor controlling or otherwise coupled with the receiver 810, the transmitter 815, the communications manager 820, or a combination thereof) may support techniques for more efficient utilization of communication resources and extended sidelink communication coverage. For example, the described techniques supported by the communications manager 820 may enable enhanced coordination of link configurations (e.g., RLC layer and channel configurations) such that end-to-end QoS requirements are satisfied for relayed communications.
[0156] FIG. 9 shows a block diagram 900 of a device 905 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a device 805 or a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one or more components of the device 905 (e.g., the receiver 910, the transmitter 915, and the communications manager 920) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0157] The receiver 910 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for configuring sidelink DRBs for relayed communications) . Information may be passed on to other components of the device 905. The receiver 910 may utilize a single antenna or a set of multiple antennas.
[0158] The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for configuring sidelink DRBs for relayed communications) . In some examples, the transmitter 915 may be co-located with a receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.
[0159] The device 905, or various components thereof, may be an example of means for performing various aspects of techniques for configuring sidelink DRBs for relayed communications as described herein. For example, the communications manager 920 may include an establishment component 925, a traffic information component 930, a channel configuration component 935, or any combination thereof. The communications manager 920 may be an example of aspects of a communications manager 820 as described herein. In some examples, the communications manager 920, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
[0160] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The establishment component 925 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The traffic information component 930 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The channel configuration component 935 is capable of, configured to, or operable to support a means for receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0161] Additionally, or alternatively, the communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The establishment component 925 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The traffic information component 930 is capable of, configured to, or operable to support a means for receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The channel configuration component 935 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0162] FIG. 10 shows a block diagram 1000 of a communications manager 1020 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. The communications manager 1020 may be an example of aspects of a communications manager 820, a communications manager 920, or both, as described herein. The communications manager 1020, or various components thereof, may be an example of means for performing various aspects of techniques for configuring sidelink DRBs for relayed communications as described herein. For example, the communications manager 1020 may include an establishment component 1025, a traffic information component 1030, a channel configuration component 1035, a mapping component 1040, a communication component 1045, a DRB component 1050, a per-hop QoS profile component 1055, a relay component 1060, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0163] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The establishment component 1025 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The traffic information component 1030 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0164] In some examples, the mapping component 1040 is capable of, configured to, or operable to support a means for determining a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link, where the end-to-end traffic information includes an indication of the mapping.
[0165] In some examples, the mapping component 1040 is capable of, configured to, or operable to support a means for receiving, from a network entity, a third message indicating the mapping between the one or more end-to-end QoS flow IDs and the respective end-to-end DRBs, where the mapping is determined based on the third message. In some examples, the mapping is determined based on a preconfigured mapping between the one or more end-to-end QoS flow IDs and the respective end-to-end DRBs.
[0166] In some examples, the per-hop QoS profile component 1055 is capable of, configured to, or operable to support a means for determining a first portion of end-to-end QoS profiles of the set of end-to-end QoS profiles for the first communication link based on the configuration information indicating the first portion of end-to-end QoS profiles and one or more corresponding end-to-end QoS flow IDs for the first communication link. In some examples, the communication component 1045 is capable of, configured to, or operable to support a means for communicating, via the second UE, with the third UE based on a first RLC layer and channel configuration for the first communication link, the first RLC layer and channel configuration mapped to an end-to-end DRB of the end-to-end communication link.
[0167] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining a first RLC layer and channel configuration for the first communication link based on the configuration information indicating the first RLC layer and channel configuration for the first communication link, the first RLC layer and channel configuration mapped to an end-to-end DRB of the end-to-end communication link. In some examples, the communication component 1045 is capable of, configured to, or operable to support a means for communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0168] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining a first RLC layer and channel configuration for the first communication link and a second RLC layer and channel configuration for a second communication link between the second UE and the third UE, where the first RLC layer and channel configuration and the second RLC layer and channel configuration are based on the configuration information and a mapping between one or more end-to-end QoS flow IDs and an end-to-end DRB of the end-to-end communication link. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a fourth message indicating an index of the end-to-end DRB and the second RLC layer and channel configuration for the second communication link, where the second RLC layer and channel configuration is mapped to the end-to-end DRB. In some examples, the communication component 1045 is capable of, configured to, or operable to support a means for communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0169] In some examples, the configuration information includes an indication of a first portion of end-to-end QoS profiles from the set of end-to-end QoS profiles and a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles.
[0170] In some examples, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles.
[0171] In some examples, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link. In some examples, the configuration information includes an indication of a first portion of end-to-end QoS profiles from the set of end-to-end QoS profiles and further includes a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles or a set of DRB IDs corresponding to the first portion of end-to-end QoS profiles.
[0172] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining a first RLC layer and channel configuration for the first communication link, where the first RLC layer and channel configuration is for the set of end-to-end QoS flow IDs or the set of DRB IDs. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a fifth message indicating the first RLC layer and channel configuration. In some examples, the communication component 1045 is capable of, configured to, or operable to support a means for communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0173] In some examples, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link. In some examples, the configuration information includes an indication of a first RLC layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end QoS flow IDs associated with the first RLC layer and channel configuration or a set of DRB IDs associated with first RLC layer and channel configuration.
[0174] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining, for the set of end-to-end QoS flow IDs or the set of DRB IDs, the first RLC layer and channel configuration for the first communication link based on the indication of the first RLC layer and channel configuration. In some examples, the communication component 1045 is capable of, configured to, or operable to support a means for communicating, via the second UE, with the third UE based on the first RLC layer and channel configuration.
[0175] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to a network entity, a sixth message including the indication of the first RLC layer and channel configuration and a first portion of end-to-end QoS profiles. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the network entity, a seventh message indicating a modified RLC layer and channel configuration that is different from the first RLC layer and channel configuration indicated by the second UE, where the determined first RLC layer and channel configuration includes the modified RLC layer and channel configuration based on the seventh message.
[0176] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to a network entity, a sixth message including the indication of the first RLC layer and channel configuration and a first portion of end-to-end QoS profiles. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the network entity, a seventh message indicating an unmodified RLC layer and channel configuration that is the same as the first RLC layer and channel configuration indicated by the second UE, where the determined first RLC layer and channel configuration includes the unmodified RLC layer and channel configuration.
[0177] In some examples, the configuration information further includes an indication of a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles. In some examples, the first message, the second message, or both, includes a PC5 radio resource control message or a PC5 signaling message.
[0178] Additionally, or alternatively, the communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. In some examples, the establishment component 1025 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link. In some examples, the traffic information component 1030 is capable of, configured to, or operable to support a means for receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0179] In some examples, the end-to-end traffic information includes an indication of a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link, and the DRB component 1050 is capable of, configured to, or operable to support a means for identifying an end-to-end DRB of the end-to-end communication link based on the mapping. In some examples, the end-to-end traffic information includes an indication of a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link, and the per-hop QoS profile component 1055 is capable of, configured to, or operable to support a means for determining, for the identified end-to-end DRB, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE.
[0180] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining a first RLC layer and channel configuration for the first communication link, or a second RLC layer and channel configuration for the second communication link, or both.
[0181] In some examples, the configuration information includes an indication of the first portion of end-to-end QoS profiles and one or more corresponding end-to-end QoS flow IDs for the first communication link, and the relay component 1060 is capable of, configured to, or operable to support a means for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration for the second communication link.
[0182] In some examples, the configuration information includes an indication of the first RLC layer and channel configuration for the first communication link, and the relay component 1060 is capable of, configured to, or operable to support a means for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration for the second communication link.
[0183] In some examples, the first RLC layer and channel configuration or the second RLC layer and channel configuration, or both, is determined based on signaling from a network entity, or one or more preconfigured RLC layer and channel configurations, or any combination thereof.
[0184] In some examples, the end-to-end traffic information of includes one or more QoS flow IDs corresponding to the set of end-to-end QoS profiles, and the per-hop QoS profile component 1055 is capable of, configured to, or operable to support a means for determining, based on the set of end-to-end QoS profiles and the one or more QoS flow IDs, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE, where the configuration information includes an indication of the first portion of end-to-end QoS profiles and a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles.
[0185] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the second UE, a fourth message indicating an index of an end-to-end DRB of the end-to-end communication link and an indication of a second RLC layer and channel configuration for the second communication link, where the second RLC layer and channel configuration is mapped to the end-to-end DRB. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining the second RLC layer and channel configuration based on the indication of the second RLC layer and channel configuration. In some examples, the relay component 1060 is capable of, configured to, or operable to support a means for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration.
[0186] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to a network entity, an eighth message including the indication of the second RLC layer and channel configuration. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the network entity, a ninth message indicating a modified RLC layer and channel configuration that is different from the second RLC layer and channel configuration indicated by the second UE, where the determined second RLC layer and channel configuration includes the modified RLC layer and channel configuration.
[0187] In some examples, the eighth message further includes an indication of the second portion of end-to-end QoS profiles for the second communication link.
[0188] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for transmitting, to a network entity, an eighth message including the indication of the second RLC layer and channel configuration. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the network entity, a ninth message indicating an unmodified RLC layer and channel configuration that is the same as the second RLC layer and channel configuration indicated by the second UE, where the determined second RLC layer and channel configuration includes the unmodified RLC layer and channel configuration.
[0189] In some examples, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link, and the per-hop QoS profile component 1055 is capable of, configured to, or operable to support a means for determining a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE, and where the configuration information includes an indication of the first portion of end-to-end QoS profiles and further indicates a first set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles or a set of DRB IDs corresponding to the first portion of end-to-end QoS profiles.
[0190] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the second UE, a fifth message indicating a first RLC layer and channel configuration for the first communication link, where the first RLC layer and channel configuration is based on the first set of end-to-end QoS flow IDs or the set of DRB IDs. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining a second RLC layer and channel configuration for the second communication link based on the first RLC layer and channel configuration, the second portion of end-to-end QoS profiles, the set of DRB IDs, or any combination thereof. In some examples, the relay component 1060 is capable of, configured to, or operable to support a means for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration.
[0191] In some examples, to support determining the second RLC layer and channel configuration, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining, for a second portion of end-to-end QoS flows, the second RLC layer and channel configuration for the second communication link based on the first RLC layer and channel configuration and the second portion of end-to-end QoS profiles.
[0192] In some examples, the per-hop QoS profile component 1055 is capable of, configured to, or operable to support a means for transmitting, to a network entity, an tenth message indicating the second portion of end-to-end QoS profiles. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from the network entity, an eleventh message indicating the second RLC layer and channel configuration that is based on the second portion of end-to-end QoS profiles, where the second RLC layer and channel configuration is determined based on the eleventh message.
[0193] In some examples, the mapping component 1040 is capable of, configured to, or operable to support a means for storing a first mapping between the first RLC layer and channel configuration and the first communication link and a second mapping between the second RLC layer and channel configuration and the second communication link.
[0194] In some examples, to support determining the second RLC layer and channel configuration, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining, for the set of DRB IDs, the second RLC layer and channel configuration for the second communication link.
[0195] In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for receiving, from a network entity, a twelfth message indicating the second RLC layer and channel configuration, where the second RLC layer and channel configuration is determined based on the twelfth message.
[0196] In some examples, the end-to-end traffic information includes one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link. In some examples, the configuration information includes an indication of a first RLC layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end QoS flow IDs associated with the first RLC layer and channel configuration or a set of DRB IDs associated with the first RLC layer and channel configuration.
[0197] In some examples, the per-hop QoS profile component 1055 is capable of, configured to, or operable to support a means for determining a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE. In some examples, the channel configuration component 1035 is capable of, configured to, or operable to support a means for determining the first RLC layer and channel configuration for the first communication link and a second RLC layer and channel configuration for the second communication link. In some examples, the relay component 1060 is capable of, configured to, or operable to support a means for relaying signaling between the second UE and the third UE based on the second RLC layer and channel configuration.
[0198] In some examples, the first RLC layer and channel configuration or the second RLC layer and channel configuration, or both, is determined based on signaling from a network entity, or one or more preconfigured RLC layer and channel configurations, or any combination thereof.
[0199] In some examples, the configuration information further includes an indication of the first portion of end-to-end QoS profiles and the second portion of end-to-end QoS profiles. In some examples, the first message, the second message, or both, includes a PC5 radio resource control message or a PC5 signaling message.
[0200] FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of or include the components of a device 805, a device 905, or a UE 115 as described herein. The device 1105 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1120, an input / output (I / O) controller 1110, a transceiver 1115, an antenna 1125, at least one memory 1130, code 1135, and at least one processor 1140. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1145) .
[0201] The I / O controller 1110 may manage input and output signals for the device 1105. The I / O controller 1110 may also manage peripherals not integrated into the device 1105. In some cases, the I / O controller 1110 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1110 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1110 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1110 may be implemented as part of one or more processors, such as the at least one processor 1140. In some cases, a user may interact with the device 1105 via the I / O controller 1110 or via hardware components controlled by the I / O controller 1110.
[0202] In some cases, the device 1105 may include a single antenna 1125. However, in some other cases, the device 1105 may have more than one antenna 1125, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1115 may communicate bi-directionally, via the one or more antennas 1125, wired, or wireless links as described herein. For example, the transceiver 1115 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1115 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1125 for transmission, and to demodulate packets received from the one or more antennas 1125. The transceiver 1115, or the transceiver 1115 and one or more antennas 1125, may be an example of a transmitter 815, a transmitter 915, a receiver 810, a receiver 910, or any combination thereof or component thereof, as described herein.
[0203] The at least one memory 1130 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1130 may store computer-readable, computer-executable code 1135 including instructions that, when executed by the at least one processor 1140, cause the device 1105 to perform various functions described herein. The code 1135 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1135 may not be directly executable by the at least one processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1130 may contain, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0204] The at least one processor 1140 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some cases, the at least one processor 1140 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1140. The at least one processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting techniques for configuring sidelink DRBs for relayed communications) . For example, the device 1105 or a component of the device 1105 may include at least one processor 1140 and at least one memory 1130 coupled with or to the at least one processor 1140, the at least one processor 1140 and at least one memory 1130 configured to perform various functions described herein. In some examples, the at least one processor 1140 may include multiple processors and the at least one memory 1130 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 1140 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1140) and memory circuitry (which may include the at least one memory 1130) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. As such, the at least one processor 1140 or a processing system including the at least one processor 1140 may be configured to, configurable to, or operable to cause the device 1105 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 1130 or otherwise, to perform one or more of the functions described herein.
[0205] The communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The communications manager 1120 is capable of, configured to, or operable to support a means for receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE.
[0206] Additionally, or alternatively, the communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, where the communications between the second UE and the third UE are associated with an end-to-end communication link. The communications manager 1120 is capable of, configured to, or operable to support a means for receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE.
[0207] By including or configuring the communications manager 1120 in accordance with examples as described herein, the device 1105 may support techniques for improved communication reliability, more efficient utilization of communication resources, and improved coordination between devices. For example, the described techniques supported by the communications manager 1120 may enable enhanced coordination of link configurations (e.g., RLC layer and channel configurations) such that end-to-end QoS requirements are satisfied for relayed communications between two UEs 115.
[0208] In some examples, the communications manager 1120 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1115, the one or more antennas 1125, or any combination thereof. Although the communications manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1120 may be supported by or performed by the at least one processor 1140, the at least one memory 1130, the code 1135, or any combination thereof. For example, the code 1135 may include instructions executable by the at least one processor 1140 to cause the device 1105 to perform various aspects of techniques for configuring sidelink DRBs for relayed communications as described herein, or the at least one processor 1140 and the at least one memory 1130 may be otherwise configured to, individually or collectively, perform or support such operations.
[0209] FIG. 12 shows a flowchart illustrating a method 1200 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0210] At 1205, the method may include establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by an establishment component 1025 as described with reference to FIG. 10.
[0211] At 1210, the method may include transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by a traffic information component 1030 as described with reference to FIG. 10.
[0212] At 1215, the method may include receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE. The operations of 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by a channel configuration component 1035 as described with reference to FIG. 10.
[0213] FIG. 13 shows a flowchart illustrating a method 1300 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE or its components as described herein. For example, the operations of the method 1300 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0214] At 1305, the method may include establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, where the communications between the first UE and the third UE are associated with an end-to-end communication link. The operations of 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by an establishment component 1025 as described with reference to FIG. 10.
[0215] At 1310, the method may include determining a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link. The operations of 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a mapping component 1040 as described with reference to FIG. 10.
[0216] At 1315, the method may include transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link, wherein the end-to-end traffic information includes an indication of the mapping. The operations of 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by a traffic information component 1030 as described with reference to FIG. 10.
[0217] At 1320, the method may include receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link including the first communication link between the first UE and the second UE. The operations of 1320 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by a channel configuration component 1035 as described with reference to FIG. 10.
[0218] FIG. 14 shows a flowchart illustrating a method 1400 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with aspects of the present disclosure. The operations of the method 1400 may be implemented by a UE (e.g., a first UE) or its components as described herein. For example, the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0219] At 1405, the method may include establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, and where the communications between the second UE and the third UE are associated with an end-to-end communication link. The operations of 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by an establishment component 1025 as described with reference to FIG. 10.
[0220] At 1410, the method may include receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a traffic information component 1030 as described with reference to FIG. 10.
[0221] At 1415, the method may include transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE. The operations of 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a channel configuration component 1035 as described with reference to FIG. 10.
[0222] FIG. 15 shows a flowchart illustrating a method 1500 that supports techniques for configuring sidelink DRBs for relayed communications in accordance with aspects of the present disclosure. The operations of the method 1500 may be implemented by a UE (e.g., a first UE) or its components as described herein. For example, the operations of the method 1500 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0223] At 1505, the method may include establishing a first communication link with a second UE, where the first UE operates as a relay for communications between the second UE and a third UE, and where the communications between the second UE and the third UE are associated with an end-to-end communication link. The operations of 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by an establishment component 1025 as described with reference to FIG. 10.
[0224] At 1510, the method may include receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link. The operations of 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a traffic information component 1030 as described with reference to FIG. 10.
[0225] At 1515, the method may include identifying an end-to-end DRB of the end-to-end communication link based on a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link. The operations of 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a DRB component 1050 as described with reference to FIG. 10.
[0226] At 1520, the method may include determining, for the identified end-to-end DRB, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, where the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the second UE and the third UE. The operations of 1520 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed by a per-hop QoS profile component 1055 as described with reference to FIG. 10.
[0227] At 1525, the method may include transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part including the first communication link between the first UE and the second UE. The operations of 1525 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1525 may be performed by a channel configuration component 1035 as described with reference to FIG. 10.
[0228] The following provides an overview of aspects of the present disclosure:
[0229] Aspect 1: A method for wireless communications at a first UE, comprising: establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, wherein the communications between the first UE and the third UE are associated with an end-to-end communication link; transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link; and receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link comprising the first communication link between the first UE and the second UE.
[0230] Aspect 2: The method of aspect 1, further comprising: determining a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link, wherein the end-to-end traffic information comprises an indication of the mapping.
[0231] Aspect 3: The method of aspect 2, further comprising: receiving, from a network entity, a third message indicating the mapping between the one or more end-to-end QoS flow IDs and the respective end-to-end DRBs, wherein the mapping is determined based at least in part on the third message.
[0232] Aspect 4: The method of any of aspects 2 through 3, wherein the mapping is determined based at least in part on a preconfigured mapping between the one or more end-to-end QoS flow IDs and the respective end-to-end DRBs.
[0233] Aspect 5: The method of any of aspects 2 through 4, further comprising: determining a first portion of end-to-end QoS profiles of the set of end-to-end QoS profiles for the first communication link based at least in part on the configuration information indicating the first portion of end-to-end QoS profiles and one or more corresponding end-to-end QoS flow IDs for the first communication link; and communicating, via the second UE, with the third UE based at least in part on a first RLC layer and channel configuration for the first communication link, the first RLC layer and channel configuration mapped to an end-to-end DRB of the end-to-end communication link.
[0234] Aspect 6: The method of any of aspects 2 through 5, further comprising: determining a first RLC layer and channel configuration for the first communication link based at least in part on the configuration information indicating the first RLC layer and channel configuration for the first communication link, the first RLC layer and channel configuration mapped to an end-to-end DRB of the end-to-end communication link; and communicating, via the second UE, with the third UE based at least in part on the first RLC layer and channel configuration.
[0235] Aspect 7: The method of any of aspects 1 through 6, further comprising: determining a first RLC layer and channel configuration for the first communication link and a second RLC layer and channel configuration for a second communication link between the second UE and the third UE, wherein the first RLC layer and channel configuration and the second RLC layer and channel configuration are based at least in part on the configuration information and a mapping between one or more end-to-end QoS flow IDs and an end-to-end DRB of the end-to-end communication link; transmitting, to the second UE, a fourth message indicating an index of the end-to-end DRB and the second RLC layer and channel configuration for the second communication link, wherein the second RLC layer and channel configuration is mapped to the end-to-end DRB; and communicating, via the second UE, with the third UE based at least in part on the first RLC layer and channel configuration.
[0236] Aspect 8: The method of aspect 7, wherein the configuration information comprises an indication of a first portion of end-to-end QoS profiles from the set of end-to-end QoS profiles and a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles.
[0237] Aspect 9: The method of any of aspects 7 through 8, wherein the end-to-end traffic information comprises one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles.
[0238] Aspect 10: The method of any of aspects 1 through 9, wherein the end-to-end traffic information comprises one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link, and the configuration information comprises an indication of a first portion of end-to-end QoS profiles from the set of end-to-end QoS profiles and further comprises a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles or a set of DRB IDs corresponding to the first portion of end-to-end QoS profiles.
[0239] Aspect 11: The method of aspect 10, further comprising: determining a first RLC layer and channel configuration for the first communication link, wherein the first RLC layer and channel configuration is for the set of end-to-end QoS flow IDs or the set of DRB IDs; transmitting, to the second UE, a fifth message indicating the first RLC layer and channel configuration; and communicating, via the second UE, with the third UE based at least in part on the first RLC layer and channel configuration.
[0240] Aspect 12: The method of any of aspects 1 through 11, wherein the end-to-end traffic information comprises one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link, and the configuration information comprises an indication of a first RLC layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end QoS flow IDs associated with the first RLC layer and channel configuration or a set of DRB IDs associated with first RLC layer and channel configuration.
[0241] Aspect 13: The method of aspect 12, further comprising: determining, for the set of end-to-end QoS flow IDs or the set of DRB IDs, the first RLC layer and channel configuration for the first communication link based at least in part on the indication of the first RLC layer and channel configuration; and communicating, via the second UE, with the third UE based at least in part on the first RLC layer and channel configuration.
[0242] Aspect 14: The method of aspect 13, further comprising: transmitting, to a network entity, a sixth message including the indication of the first RLC layer and channel configuration and a first portion of end-to-end QoS profiles; and receiving, from the network entity, a seventh message indicating a modified RLC layer and channel configuration that is different from the first RLC layer and channel configuration indicated by the second UE, wherein the determined first RLC layer and channel configuration comprises the modified RLC layer and channel configuration based at least in part on the seventh message.
[0243] Aspect 15: The method of any of aspects 13 through 14, further comprising: transmitting, to a network entity, a sixth message including the indication of the first RLC layer and channel configuration and a first portion of end-to-end QoS profiles; and receiving, from the network entity, a seventh message indicating an unmodified RLC layer and channel configuration that is the same as the first RLC layer and channel configuration indicated by the second UE, wherein the determined first RLC layer and channel configuration comprises the unmodified RLC layer and channel configuration.
[0244] Aspect 16: The method of any of aspects 12 through 15, wherein the configuration information further comprises an indication of a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles.
[0245] Aspect 17: The method of any of aspects 1 through 16, wherein the first message, the second message, or both, comprises a PC5 RRC message or a PC5 signaling message.
[0246] Aspect 18: A method for wireless communications at a first UE, comprising: establishing a first communication link with a second UE, wherein the first UE operates as a relay for communications between the second UE and a third UE, and wherein the communications between the second UE and the third UE are associated with an end-to-end communication link; receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end QoS profiles associated with the end-to-end communication link; and transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part comprising the first communication link between the first UE and the second UE.
[0247] Aspect 19: The method of aspect 18, wherein the end-to-end traffic information comprises an indication of a mapping between one or more end-to-end QoS flow IDs and respective end-to-end DRBs corresponding to the end-to-end communication link, the method further comprising: identifying an end-to-end DRB of the end-to-end communication link based at least in part on the mapping; and determining, for the identified end-to-end DRB, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, wherein the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE.
[0248] Aspect 20: The method of aspect 19, further comprising: determining a first RLC layer and channel configuration for the first communication link, or a second RLC layer and channel configuration for the second communication link, or both.
[0249] Aspect 21: The method of aspect 20, wherein the configuration information comprises an indication of the first portion of end-to-end QoS profiles and one or more corresponding end-to-end QoS flow IDs for the first communication link, the method further comprising: relaying signaling between the second UE and the third UE based at least in part on the second RLC layer and channel configuration for the second communication link.
[0250] Aspect 22: The method of any of aspects 20 through 21, wherein the configuration information comprises an indication of the first RLC layer and channel configuration for the first communication link, the method further comprising: relaying signaling between the second UE and the third UE based at least in part on the second RLC layer and channel configuration for the second communication link.
[0251] Aspect 23: The method of any of aspects 20 through 22, wherein the first RLC layer and channel configuration or the second RLC layer and channel configuration, or both, is determined based at least in part on signaling from a network entity, or one or more preconfigured RLC layer and channel configurations, or any combination thereof.
[0252] Aspect 24: The method of any of aspects 18 through 23, wherein the end-to-end traffic information of comprises one or more QoS flow IDs corresponding to the set of end-to-end QoS profiles, the method further comprising: determining, based at least in part on the set of end-to-end QoS profiles and the one or more QoS flow IDs, a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, wherein the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE, wherein the configuration information comprises an indication of the first portion of end-to-end QoS profiles and a set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles.
[0253] Aspect 25: The method of aspect 24, further comprising: receiving, from the second UE, a fourth message indicating an index of an end-to-end DRB of the end-to-end communication link and an indication of a second RLC layer and channel configuration for the second communication link, wherein the second RLC layer and channel configuration is mapped to the end-to-end DRB; determining the second RLC layer and channel configuration based at least in part on the indication of the second RLC layer and channel configuration; and relaying signaling between the second UE and the third UE based at least in part on the second RLC layer and channel configuration.
[0254] Aspect 26: The method of aspect 25, further comprising: transmitting, to a network entity, an eighth message including the indication of the second RLC layer and channel configuration; and receiving, from the network entity, a ninth message indicating a modified RLC layer and channel configuration that is different from the second RLC layer and channel configuration indicated by the second UE, wherein the determined second RLC layer and channel configuration comprises the modified RLC layer and channel configuration.
[0255] Aspect 27: The method of aspect 26, wherein the eighth message further includes an indication of the second portion of end-to-end QoS profiles for the second communication link.
[0256] Aspect 28: The method of any of aspects 25 through 27, further comprising: transmitting, to a network entity, an eighth message including the indication of the second RLC layer and channel configuration; and receiving, from the network entity, a ninth message indicating an unmodified RLC layer and channel configuration that is the same as the second RLC layer and channel configuration indicated by the second UE, wherein the determined second RLC layer and channel configuration comprises the unmodified RLC layer and channel configuration.
[0257] Aspect 29: The method of any of aspects 18 through 28, wherein the end-to-end traffic information comprises one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link, the method further comprising: determining a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, wherein the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE, and wherein the configuration information comprises an indication of the first portion of end-to-end QoS profiles and further indicates a first set of end-to-end QoS flow IDs corresponding to the first portion of end-to-end QoS profiles or a set of DRB IDs corresponding to the first portion of end-to-end QoS profiles.
[0258] Aspect 30: The method of aspect 29, further comprising: receiving, from the second UE, a fifth message indicating a first RLC layer and channel configuration for the first communication link, wherein the first RLC layer and channel configuration is based at least in part on the first set of end-to-end QoS flow IDs or the set of DRB IDs; determining a second RLC layer and channel configuration for the second communication link based at least in part on the first RLC layer and channel configuration, the second portion of end-to-end QoS profiles, the set of DRB IDs, or any combination thereof; and relaying signaling between the second UE and the third UE based at least in part on the second RLC layer and channel configuration.
[0259] Aspect 31: The method of aspect 30, wherein the end-to-end traffic information comprises the first set of end-to-end QoS flow IDs, and wherein determining the second RLC layer and channel configuration comprises: determining, for a second portion of end-to-end QoS flows, the second RLC layer and channel configuration for the second communication link based at least in part on the first RLC layer and channel configuration and the second portion of end-to-end QoS profiles.
[0260] Aspect 32: The method of aspect 31, further comprising: transmitting, to a network entity, an tenth message indicating the second portion of end-to-end QoS profiles; and receiving, from the network entity, an eleventh message indicating the second RLC layer and channel configuration that is based at least in part on the second portion of end-to-end QoS profiles, wherein the second RLC layer and channel configuration is determined based at least in part on the eleventh message.
[0261] Aspect 33: The method of any of aspects 30 through 32, further comprising: storing a first mapping between the first RLC layer and channel configuration and the first communication link and a second mapping between the second RLC layer and channel configuration and the second communication link.
[0262] Aspect 34: The method of any of aspects 30 through 33, wherein the end-to-end traffic information comprises the set of DRB IDs, and wherein determining the second RLC layer and channel configuration comprises: determining, for the set of DRB IDs, the second RLC layer and channel configuration for the second communication link.
[0263] Aspect 35: The method of aspect 34, further comprising: receiving, from a network entity, a twelfth message indicating the second RLC layer and channel configuration, wherein the second RLC layer and channel configuration is determined based at least in part on the twelfth message.
[0264] Aspect 36: The method of any of aspects 18 through 35, wherein the end-to-end traffic information comprises one or more end-to-end QoS flow IDs corresponding to the set of end-to-end QoS profiles or one or more DRB IDs associated with the end-to-end communication link, and the configuration information comprises an indication of a first RLC layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end QoS flow IDs associated with the first RLC layer and channel configuration or a set of DRB IDs associated with the first RLC layer and channel configuration.
[0265] Aspect 37: The method of aspect 36, further comprising: determining a first portion of end-to-end QoS profiles and a second portion of end-to-end QoS profiles of the set of end-to-end QoS profiles, wherein the first portion of end-to-end QoS profiles is associated with the first communication link and the second portion of end-to-end QoS profiles is associated with a second communication link between the first UE and the third UE; determining the first RLC layer and channel configuration for the first communication link and a second RLC layer and channel configuration for the second communication link; and relaying signaling between the second UE and the third UE based at least in part on the second RLC layer and channel configuration.
[0266] Aspect 38: The method of aspect 37, wherein the first RLC layer and channel configuration or the second RLC layer and channel configuration, or both, is determined based at least in part on signaling from a network entity, or one or more preconfigured RLC layer and channel configurations, or any combination thereof.
[0267] Aspect 39: The method of any of aspects 37 through 38, wherein the configuration information further comprises an indication of the first portion of end-to-end QoS profiles and the second portion of end-to-end QoS profiles.
[0268] Aspect 40: The method of any of aspects 18 through 39, wherein the first message, the second message, or both, comprises a PC5 RRC message or a PC5 signaling message.
[0269] Aspect 41: A first UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first UE to perform a method of any of aspects 1 through 17.
[0270] Aspect 42: A first UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 17.
[0271] Aspect 43: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors individually or collectively to perform a method of any of aspects 1 through 17.
[0272] Aspect 44: A first UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first UE to perform a method of any of aspects 18 through 40.
[0273] Aspect 45: A first UE for wireless communications, comprising at least one means for performing a method of any of aspects 18 through 40.
[0274] Aspect 46: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors individually or collectively to perform a method of any of aspects 18 through 40.
[0275] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0276] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0277] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0278] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0279] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0280] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0281] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0282] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “a component” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0283] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0284] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.
[0285] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration, ” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0286] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A first user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first UE to:establish a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, wherein the communications between the first UE and the third UE are associated with an end-to-end communication link;transmit, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andreceive, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link comprising the first communication link between the first UE and the second UE.2.The first UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a mapping between one or more end-to-end quality of service flow identifiers and respective end-to-end data radio bearers corresponding to the end-to-end communication link, wherein the end-to-end traffic information comprises an indication of the mapping.3.The first UE of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:receive, from a network entity, a third message indicating the mapping between the one or more end-to-end quality of service flow identifiers and the respective end-to-end data radio bearers, wherein the mapping is determined based at least in part on the third message.4.The first UE of claim 2, wherein the mapping is determined based at least in part on a preconfigured mapping between the one or more end-to-end quality of service flow identifiers and the respective end-to-end data radio bearers.5.The first UE of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles for the first communication link based at least in part on the configuration information indicating the first portion of end-to-end quality of service profiles and one or more corresponding end-to-end quality of service flow identifiers for the first communication link; andcommunicating, via the second UE, with the third UE based at least in part on a first radio link control layer and channel configuration for the first communication link, the first radio link control layer and channel configuration mapped to an end-to-end data radio bearer of the end-to-end communication link.6.The first UE of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first radio link control layer and channel configuration for the first communication link based at least in part on the configuration information indicating the first radio link control layer and channel configuration for the first communication link, the first radio link control layer and channel configuration mapped to an end-to-end data radio bearer of the end-to-end communication link; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.7.The first UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first radio link control layer and channel configuration for the first communication link and a second radio link control layer and channel configuration for a second communication link between the second UE and the third UE, wherein the first radio link control layer and channel configuration and the second radio link control layer and channel configuration are based at least in part on the configuration information and a mapping between one or more end-to-end quality of service flow identifiers and an end-to-end data radio bearer of the end-to-end communication link;transmit, to the second UE, a fourth message indicating an index of the end-to-end data radio bearer and the second radio link control layer and channel configuration for the second communication link, wherein the second radio link control layer and channel configuration is mapped to the end-to-end data radio bearer; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.8.The first UE of claim 7, wherein the configuration information comprises an indication of a first portion of end-to-end quality of service profiles from the set of end-to-end quality of service profiles and a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles.9.The first UE of claim 7, wherein the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles.10.The first UE of claim 1, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, andthe configuration information comprises an indication of a first portion of end-to-end quality of service profiles from the set of end-to-end quality of service profiles and further comprises a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles or a set of data radio bearer identifiers corresponding to the first portion of end-to-end quality of service profiles.11.The first UE of claim 10, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first radio link control layer and channel configuration for the first communication link, wherein the first radio link control layer and channel configuration is for the set of end-to-end quality of service flow identifiers or the set of data radio bearer identifiers;transmit, to the second UE, a fifth message indicating the first radio link control layer and channel configuration; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.12.The first UE of claim 1, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, andthe configuration information comprises an indication of a first radio link control layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end quality of service flow identifiers associated with the first radio link control layer and channel configuration or a set of data radio bearer identifiers associated with first radio link control layer and channel configuration.13.The first UE of claim 12, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine, for the set of end-to-end quality of service flow identifiers or the set of data radio bearer identifiers, the first radio link control layer and channel configuration for the first communication link based at least in part on the indication of the first radio link control layer and channel configuration; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.14.The first UE of claim 13, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:transmit, to a network entity, a sixth message including the indication of the first radio link control layer and channel configuration and a first portion of end-to-end quality of service profiles; andreceive, from the network entity, a seventh message indicating a modified radio link control layer and channel configuration that is different from the first radio link control layer and channel configuration indicated by the second UE, wherein the determined first radio link control layer and channel configuration comprises the modified radio link control layer and channel configuration based at least in part on the seventh message.15.The first UE of claim 13, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:transmit, to a network entity, a sixth message including the indication of the first radio link control layer and channel configuration and a first portion of end-to-end quality of service profiles; andreceive, from the network entity, a seventh message indicating an unmodified radio link control layer and channel configuration that is the same as the first radio link control layer and channel configuration indicated by the second UE, wherein the determined first radio link control layer and channel configuration comprises the unmodified radio link control layer and channel configuration.16.The first UE of claim 12, wherein the configuration information further comprises an indication of a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles.17.The first UE of claim 1, wherein the first message, the second message, or both, comprises a PC5 radio resource control message or a PC5 signaling message.18.A first user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first UE to:establish a first communication link with a second UE, wherein the first UE operates as a relay for communications between the second UE and a third UE, wherein the communications between the second UE and the third UE are associated with an end-to-end communication link;receive, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andtransmit, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part comprising the first communication link between the first UE and the second UE.19.The first UE of claim 18, wherein the end-to-end traffic information comprises an indication of a mapping between one or more end-to-end quality of service flow identifiers and respective end-to-end data radio bearers corresponding to the end-to-end communication link, and the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:identify an end-to-end data radio bearer of the end-to-end communication link based at least in part on the mapping; anddetermine, for the identified end-to-end data radio bearer, a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE.20.The first UE of claim 19, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first radio link control layer and channel configuration for the first communication link, or a second radio link control layer and channel configuration for the second communication link, or both.21.The first UE of claim 20, wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and one or more corresponding end-to-end quality of service flow identifiers for the first communication link, and the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:relay signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration for the second communication link.22.The first UE of claim 20, wherein the configuration information comprises an indication of the first radio link control layer and channel configuration for the first communication link, and the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:relay signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration for the second communication link.23.The first UE of claim 20, wherein the first radio link control layer and channel configuration or the second radio link control layer and channel configuration, or both, is determined based at least in part on signaling from a network entity, or one or more preconfigured radio link control layer and channel configurations, or any combination thereof.24.The first UE of claim 18, wherein the end-to-end traffic information of comprises one or more quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles, and the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine, based at least in part on the set of end-to-end quality of service profiles and the one or more quality of service flow identifiers, a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE, wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles.25.The first UE of claim 24, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:receive, from the second UE, a fourth message indicating an index of an end-to-end data radio bearer of the end-to-end communication link and an indication of a second radio link control layer and channel configuration for the second communication link, wherein the second radio link control layer and channel configuration is mapped to the end-to-end data radio bearer;determine the second radio link control layer and channel configuration based at least in part on the indication of the second radio link control layer and channel configuration; andrelay signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration.26.The first UE of claim 25, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:transmit, to a network entity, an eighth message including the indication of the second radio link control layer and channel configuration; andreceive, from the network entity, a ninth message indicating a modified radio link control layer and channel configuration that is different from the second radio link control layer and channel configuration indicated by the second UE, wherein the determined second radio link control layer and channel configuration comprises the modified radio link control layer and channel configuration.27.The first UE of claim 26, wherein the eighth message further includes an indication of the second portion of end-to-end quality of service profiles for the second communication link.28.The first UE of claim 25, wherein the one or more processors are individually or collectively further operable to execute the code to cause the second UE to:transmit, to a network entity, an eighth message including the indication of the second radio link control layer and channel configuration; andreceive, from the network entity, a ninth message indicating an unmodified radio link control layer and channel configuration that is the same as the second radio link control layer and channel configuration indicated by the second UE, wherein the determined second radio link control layer and channel configuration comprises the unmodified radio link control layer and channel configuration.29.The first UE of claim 18, wherein the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, and the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE, and wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and further indicates a first set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles or a set of data radio bearer identifiers corresponding to the first portion of end-to-end quality of service profiles.30.The first UE of claim 29, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:receive, from the second UE, a fifth message indicating a first radio link control layer and channel configuration for the first communication link, wherein the first radio link control layer and channel configuration is based at least in part on the first set of end-to-end quality of service flow identifiers or the set of data radio bearer identifiers;determine a second radio link control layer and channel configuration for the second communication link based at least in part on the first radio link control layer and channel configuration, the second portion of end-to-end quality of service profiles, the set of data radio bearer identifiers, or any combination thereof; andrelay signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration.31.The first UE of claim 30, wherein, to determine the second radio link control layer and channel configuration, the one or more processors are individually or collectively operable to execute the code to cause the first UE to:determine, for a second portion of end-to-end quality of service flows, the second radio link control layer and channel configuration for the second communication link based at least in part on the first radio link control layer and channel configuration and the second portion of end-to-end quality of service profiles.32.The first UE of claim 31, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:transmit, to a network entity, an tenth message indicating the second portion of end-to-end quality of service profiles; andreceive, from the network entity, an eleventh message indicating the second radio link control layer and channel configuration that is based at least in part on the second portion of end-to-end quality of service profiles, wherein the second radio link control layer and channel configuration is determined based at least in part on the eleventh message.33.The first UE of claim 30, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:store a first mapping between the first radio link control layer and channel configuration and the first communication link and a second mapping between the second radio link control layer and channel configuration and the second communication link.34.The first UE of claim 30, wherein, to determine the second radio link control layer and channel configuration, the one or more processors are individually or collectively operable to execute the code to cause the first UE to:determine, for the set of data radio bearer identifiers, the second radio link control layer and channel configuration for the second communication link.35.The first UE of claim 34, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:receive, from a network entity, a twelfth message indicating the second radio link control layer and channel configuration, wherein the second radio link control layer and channel configuration is determined based at least in part on the twelfth message.36.The first UE of claim 18, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, andthe configuration information comprises an indication of a first radio link control layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end quality of service flow identifiers associated with the first radio link control layer and channel configuration or a set of data radio bearer identifiers associated with the first radio link control layer and channel configuration.37.The first UE of claim 36, wherein the one or more processors are individually or collectively further operable to execute the code to cause the first UE to:determine a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE;determine the first radio link control layer and channel configuration for the first communication link and a second radio link control layer and channel configuration for the second communication link; andrelay signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration.38.The first UE of claim 37, wherein the first radio link control layer and channel configuration or the second radio link control layer and channel configuration, or both, is determined based at least in part on signaling from a network entity, or one or more preconfigured radio link control layer and channel configurations, or any combination thereof.39.The first UE of claim 37, wherein the configuration information further comprises an indication of the first portion of end-to-end quality of service profiles and the second portion of end-to-end quality of service profiles.40.The first UE of claim 18, wherein the first message, the second message, or both, comprises a PC5 radio resource control message or a PC5 signaling message.41.A method for wireless communications at a first user equipment (UE) , comprising:establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, wherein the communications between the first UE and the third UE are associated with an end-to-end communication link;transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andreceiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link comprising the first communication link between the first UE and the second UE.42.The method of claim 41, further comprising:determining a mapping between one or more end-to-end quality of service flow identifiers and respective end-to-end data radio bearers corresponding to the end-to-end communication link, wherein the end-to-end traffic information comprises an indication of the mapping.43.The method of claim 42, further comprising:determining a first subset of end-to-end quality of service profiles of the set of end-to-end quality of service profiles for the first communication link based at least in part on the second message indicating the subset of end-to-end quality of service profiles and one or more corresponding end-to-end quality of service flow identifiers for the first communication link; andcommunicating, via the second UE, with the third UE based at least in part on a first radio link control channel configuration for the first communication link, the first radio link control channel configuration mapped to an end-to-end data radio bearer of the end-to-end communication link, wherein the first radio link control channel configuration is based at least in part on the first subset of end-to-end quality of service profiles.44.The method of claim 42, further comprising:determining a first radio link control channel configuration for the first communication link based at least in part on the second message indicating the first radio link control channel configuration for the first communication link, the first radio link control channel configuration mapped to an end-to-end data radio bearer of the end-to-end communication link, wherein the first radio link control channel configuration is based at least in part on a subset of end-to-end quality of service profiles of the set of end-to-end quality of service profiles for the first communication link; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control channel configuration.45.The method of claim 41, further comprising:determining a first radio link control layer and channel configuration for the first communication link and a second radio link control layer and channel configuration for a second communication link between the second UE and the third UE, wherein the first radio link control layer and channel configuration and the second radio link control layer and channel configuration are based at least in part on the configuration information and a mapping between one or more end-to-end quality of service flow identifiers and an end-to-end data radio bearer of the end-to-end communication link;transmitting, to the second UE, a fourth message indicating an index of the end-to-end data radio bearer and the second radio link control layer and channel configuration for the second communication link, wherein the second radio link control layer and channel configuration is mapped to the end-to-end data radio bearer; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.46.The method of claim 41, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link; andthe configuration information comprises an indication of a first portion of end-to-end quality of service profiles from the set of end-to-end quality of service profiles and further comprises a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles or a set of data radio bearer identifiers corresponding to the first portion of end-to-end quality of service profiles.47.The method of claim 41, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link; andthe configuration information comprises an indication of a first radio link control layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end quality of service flow identifiers associated with the first radio link control layer and channel configuration or a set of data radio bearer identifiers associated with first radio link control layer and channel configuration.48.A method for wireless communications at a first user equipment (UE) , comprising:establishing a first communication link with a second UE, wherein the first UE operates as a relay for communications between the second UE and a third UE, and wherein the communications between the second UE and the third UE are associated with an end-to-end communication link;receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andtransmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part comprising the first communication link between the first UE and the second UE.49.The method of claim 48, wherein the end-to-end traffic information comprises an indication of a mapping between one or more end-to-end quality of service flow identifiers and respective end-to-end data radio bearers corresponding to the end-to-end communication link, the method further comprising:identifying an end-to-end data radio bearer of the end-to-end communication link based at least in part on the mapping; anddetermining, for the identified end-to-end data radio bearer, a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE.50.The method of claim 48, wherein the end-to-end traffic information of comprises one or more quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles, the method further comprising:determining, based at least in part on the set of end-to-end quality of service profiles and the one or more quality of service flow identifiers, a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE, wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles.51.The method of claim 48, wherein the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, the method further comprising:determining a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE, and wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and further indicates a first set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles or a set of data radio bearer identifiers corresponding to the first portion of end-to-end quality of service profiles.52.The method of claim 48, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link; andthe configuration information comprises an indication of a first radio link control layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end quality of service flow identifiers associated with the first radio link control layer and channel configuration or a set of data radio bearer identifiers associated with the first radio link control layer and channel configuration.53.A first user equipment (UE) for wireless communications, comprising:means for establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, wherein the communications between the first UE and the third UE are associated with an end-to-end communication link;means for transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andmeans for receiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link comprising the first communication link between the first UE and the second UE.54.A first user equipment (UE) for wireless communications, comprising:means for establishing a first communication link with a second UE, wherein the first UE operates as a relay for communications between the second UE and a third UE, wherein the communications between the second UE and the third UE are associated with an end-to-end communication link;means for receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andmeans for transmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part comprising the first communication link between the first UE and the second UE.55.A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors individually or collectively to:establish a first communication link with a second UE operating as a relay for communications between a first UE and a third UE, wherein the communications between the first UE and the third UE are associated with an end-to-end communication link;transmit, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andreceive, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link comprising the first communication link between the first UE and the second UE.56.A non-transitory computer-readable medium storing code for wireless communications at a first user equipment (UE) , the code comprising instructions executable by one or more processors individually or collectively to:establish a first communication link with a second UE, wherein the first UE operates as a relay for communications between the second UE and a third UE, and wherein the communications between the second UE and the third UE are associated with an end-to-end communication link;receive, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andtransmit, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part comprising the first communication link between the first UE and the second UE.57.A method for wireless communications by a first user equipment (UE) , comprising:establishing a first communication link with a second UE operating as a relay for communications between the first UE and a third UE, wherein the communications between the first UE and the third UE are associated with an end-to-end communication link;transmitting, to the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andreceiving, from the second UE, a second message indicating configuration information for at least a first portion of the end-to-end communication link, the first portion of the end-to-end communication link comprising the first communication link between the first UE and the second UE.58.The method of claim 57, further comprising:determining a mapping between one or more end-to-end quality of service flow identifiers and respective end-to-end data radio bearers corresponding to the end-to-end communication link, wherein the end-to-end traffic information comprises an indication of the mapping.59.The method of claim 58, further comprising:receiving, from a network entity, a third message indicating the mapping between the one or more end-to-end quality of service flow identifiers and the respective end-to-end data radio bearers, wherein the mapping is determined based at least in part on the third message.60.The method of any of claims 58 through 59, wherein the mapping is determined based at least in part on a preconfigured mapping between the one or more end-to-end quality of service flow identifiers and the respective end-to-end data radio bearers.61.The method of any of claims 58 through 60, further comprising:determining a first portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles for the first communication link based at least in part on the configuration information indicating the first portion of end-to-end quality of service profiles and one or more corresponding end-to-end quality of service flow identifiers for the first communication link; andcommunicating, via the second UE, with the third UE based at least in part on a first radio link control layer and channel configuration for the first communication link, the first radio link control layer and channel configuration mapped to an end-to-end data radio bearer of the end-to-end communication link.62.The method of any of claims 58 through 61, further comprising:determining a first radio link control layer and channel configuration for the first communication link based at least in part on the configuration information indicating the first radio link control layer and channel configuration for the first communication link, the first radio link control layer and channel configuration mapped to an end-to-end data radio bearer of the end-to-end communication link; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.63.The method of claim 57, further comprising:determining a first radio link control layer and channel configuration for the first communication link and a second radio link control layer and channel configuration for a second communication link between the second UE and the third UE, wherein the first radio link control layer and channel configuration and the second radio link control layer and channel configuration are based at least in part on the configuration information and a mapping between one or more end-to-end quality of service flow identifiers and an end-to-end data radio bearer of the end-to-end communication link;transmitting, to the second UE, a fourth message indicating an index of the end-to-end data radio bearer and the second radio link control layer and channel configuration for the second communication link, wherein the second radio link control layer and channel configuration is mapped to the end-to-end data radio bearer; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.64.The method of claim 63, wherein the configuration information comprises an indication of a first portion of end-to-end quality of service profiles from the set of end-to-end quality of service profiles and a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles.65.The method of any of claims 63 through 64, wherein the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles.66.The method of claim 57, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, andthe configuration information comprises an indication of a first portion of end-to-end quality of service profiles from the set of end-to-end quality of service profiles and further comprises a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles or a set of data radio bearer identifiers corresponding to the first portion of end-to-end quality of service profiles.67.The method of claim 66, further comprising:determining a first radio link control layer and channel configuration for the first communication link, wherein the first radio link control layer and channel configuration is for the set of end-to-end quality of service flow identifiers or the set of data radio bearer identifiers;transmitting, to the second UE, a fifth message indicating the first radio link control layer and channel configuration; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.68.The method of claim 57, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, andthe configuration information comprises an indication of a first radio link control layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end quality of service flow identifiers associated with the first radio link control layer and channel configuration or a set of data radio bearer identifiers associated with first radio link control layer and channel configuration.69.The method of claim 68, further comprising:determining, for the set of end-to-end quality of service flow identifiers or the set of data radio bearer identifiers, the first radio link control layer and channel configuration for the first communication link based at least in part on the indication of the first radio link control layer and channel configuration; andcommunicating, via the second UE, with the third UE based at least in part on the first radio link control layer and channel configuration.70.The method of claim 69, further comprising:transmitting, to a network entity, a sixth message including the indication of the first radio link control layer and channel configuration and a first portion of end-to-end quality of service profiles; andreceiving, from the network entity, a seventh message indicating a modified radio link control layer and channel configuration that is different from the first radio link control layer and channel configuration indicated by the second UE, wherein the determined first radio link control layer and channel configuration comprises the modified radio link control layer and channel configuration based at least in part on the seventh message.71.The method of any of claim 69, further comprising:transmitting, to a network entity, a sixth message including the indication of the first radio link control layer and channel configuration and a first portion of end-to-end quality of service profiles; andreceiving, from the network entity, a seventh message indicating an unmodified radio link control layer and channel configuration that is the same as the first radio link control layer and channel configuration indicated by the second UE, wherein the determined first radio link control layer and channel configuration comprises the unmodified radio link control layer and channel configuration.72.The method of any of claims 68 through 71, wherein the configuration information further comprises an indication of a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles.73.The method of any of claims 57 through 72, wherein the first message, the second message, or both, comprises a PC5 radio resource control message or a PC5 signaling message.74.A method for wireless communications by a first user equipment (UE) , comprising:establishing a first communication link with a second UE, wherein the first UE operates as a relay for communications between the second UE and a third UE, and wherein the communications between the second UE and the third UE are associated with an end-to-end communication link;receiving, from the second UE, a first message indicating end-to-end traffic information and a set of end-to-end quality of service profiles associated with the end-to-end communication link; andtransmitting, to the second UE, a second message indicating configuration information for at least a first part of the end-to-end communication link, the first part comprising the first communication link between the first UE and the second UE.75.The method of claim 74, wherein the end-to-end traffic information comprises an indication of a mapping between one or more end-to-end quality of service flow identifiers and respective end-to-end data radio bearers corresponding to the end-to-end communication link, the method further comprising:identifying an end-to-end data radio bearer of the end-to-end communication link based at least in part on the mapping; anddetermining, for the identified end-to-end data radio bearer, a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE.76.The method of claim 75, further comprising:determining a first radio link control layer and channel configuration for the first communication link, or a second radio link control layer and channel configuration for the second communication link, or both.77.The method of claim 76, wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and one or more corresponding end-to-end quality of service flow identifiers for the first communication link, the method further comprising:relaying signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration for the second communication link.78.The method of any of claims 76 through 77, wherein the configuration information comprises an indication of the first radio link control layer and channel configuration for the first communication link, the method further comprising:relaying signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration for the second communication link.79.The method of any of claims 76 through 78, wherein the first radio link control layer and channel configuration or the second radio link control layer and channel configuration, or both, is determined based at least in part on signaling from a network entity, or one or more preconfigured radio link control layer and channel configurations, or any combination thereof.80.The method of claim 74, wherein the end-to-end traffic information of comprises one or more quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles, the method further comprising:determining, based at least in part on the set of end-to-end quality of service profiles and the one or more quality of service flow identifiers, a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE, wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and a set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles.81.The method of claim 80, further comprising:receiving, from the second UE, a fourth message indicating an index of an end-to-end data radio bearer of the end-to-end communication link and an indication of a second radio link control layer and channel configuration for the second communication link, wherein the second radio link control layer and channel configuration is mapped to the end-to-end data radio bearer;determining the second radio link control layer and channel configuration based at least in part on the indication of the second radio link control layer and channel configuration; andrelaying signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration.82.The method of claim 81, further comprising:transmitting, to a network entity, an eighth message including the indication of the second radio link control layer and channel configuration; andreceiving, from the network entity, a ninth message indicating a modified radio link control layer and channel configuration that is different from the second radio link control layer and channel configuration indicated by the second UE, wherein the determined second radio link control layer and channel configuration comprises the modified radio link control layer and channel configuration.83.The method of claim 82, wherein the eighth message further includes an indication of the second portion of end-to-end quality of service profiles for the second communication link.84.The method of claim 81, further comprising:transmitting, to a network entity, an eighth message including the indication of the second radio link control layer and channel configuration; andreceiving, from the network entity, a ninth message indicating an unmodified radio link control layer and channel configuration that is the same as the second radio link control layer and channel configuration indicated by the second UE, wherein the determined second radio link control layer and channel configuration comprises the unmodified radio link control layer and channel configuration.85.The method of claim 74, wherein the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, the method further comprising:determining a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE, and wherein the configuration information comprises an indication of the first portion of end-to-end quality of service profiles and further indicates a first set of end-to-end quality of service flow identifiers corresponding to the first portion of end-to-end quality of service profiles or a set of data radio bearer identifiers corresponding to the first portion of end-to-end quality of service profiles.86.The method of claim 85, further comprising:receiving, from the second UE, a fifth message indicating a first radio link control layer and channel configuration for the first communication link, wherein the first radio link control layer and channel configuration is based at least in part on the first set of end-to-end quality of service flow identifiers or the set of data radio bearer identifiers;determining a second radio link control layer and channel configuration for the second communication link based at least in part on the first radio link control layer and channel configuration, the second portion of end-to-end quality of service profiles, the set of data radio bearer identifiers, or any combination thereof; andrelaying signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration.87.The method of claim 86, wherein determining the second radio link control layer and channel configuration comprises:determining, for a second portion of end-to-end quality of service flows, the second radio link control layer and channel configuration for the second communication link based at least in part on the first radio link control layer and channel configuration and the second portion of end-to-end quality of service profiles.88.The method of claim 87, further comprising:transmitting, to a network entity, an tenth message indicating the second portion of end-to-end quality of service profiles; andreceiving, from the network entity, an eleventh message indicating the second radio link control layer and channel configuration that is based at least in part on the second portion of end-to-end quality of service profiles, wherein the second radio link control layer and channel configuration is determined based at least in part on the eleventh message.89.The method of any of claims 86 through 88, further comprising:storing a first mapping between the first radio link control layer and channel configuration and the first communication link and a second mapping between the second radio link control layer and channel configuration and the second communication link.90.The method of any of claims 86 through 89, wherein determining the second radio link control layer and channel configuration comprises determining, for the set of data radio bearer identifiers, the second radio link control layer and channel configuration for the second communication link.91.The method of claim 90, further comprising:receiving, from a network entity, a twelfth message indicating the second radio link control layer and channel configuration, wherein the second radio link control layer and channel configuration is determined based at least in part on the twelfth message.92.The method of claim 74, wherein:the end-to-end traffic information comprises one or more end-to-end quality of service flow identifiers corresponding to the set of end-to-end quality of service profiles or one or more data radio bearer identifiers associated with the end-to-end communication link, andthe configuration information comprises an indication of a first radio link control layer and channel configuration for the first communication link, the configuration information further indicating a set of end-to-end quality of service flow identifiers associated with the first radio link control layer and channel configuration or a set of data radio bearer identifiers associated with the first radio link control layer and channel configuration.93.The method of claim 92, further comprising:determining a first portion of end-to-end quality of service profiles and a second portion of end-to-end quality of service profiles of the set of end-to-end quality of service profiles, wherein the first portion of end-to-end quality of service profiles is associated with the first communication link and the second portion of end-to-end quality of service profiles is associated with a second communication link between the first UE and the third UE;determining the first radio link control layer and channel configuration for the first communication link and a second radio link control layer and channel configuration for the second communication link; andrelaying signaling between the second UE and the third UE based at least in part on the second radio link control layer and channel configuration.94.The method of claim 93, wherein the first radio link control layer and channel configuration or the second radio link control layer and channel configuration, or both, is determined based at least in part on signaling from a network entity, or one or more preconfigured radio link control layer and channel configurations, or any combination thereof.95.The method of any of claims 93 through 94, wherein the configuration information further comprises an indication of the first portion of end-to-end quality of service profiles and the second portion of end-to-end quality of service profiles.96.The method of any of claims 74 through 95, wherein the first message, the second message, or both, comprises a PC5 radio resource control message or a PC5 signaling message.