TW202207722A - Enhancements for sidelink resource allocation - Google Patents

Abstract

Various examples and schemes pertaining to enhancements for sidelink (SL) resource allocation in New Radio (NR) vehicle-to-everything (V2X) communications are described. A user equipment (UE) transmits to a peer UE assistance information with respect to a result of sensing of one or more resources reserved for a SL communication. The UE then receives a transmission from the peer UE on a resource selected by the peer UE based on the assistance information.

Description

Enhanced mechanism for sidelink resource allocation

The present invention relates generally to wireless communications, and, more particularly, to enhanced mechanisms for sidelink (SL) resource allocation.

Unless otherwise indicated, the approaches described in this section are not considered prior art to the scope of the claims listed below, and are not admitted to be prior art by inclusion in this section.

Under the 3rd Generation Partnership Project (3GPP) specification for 5th Generation (5G) NR, vehicle-to-everything (V2X) SL communication can be carried out through unicast, multicast and broadcast communication. However, there are still some issues that need to be addressed in terms of SL resource allocation for improving reliability and reducing SL communication latency. Therefore, there is a need for a solution that enhances SL resource allocation.

The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce the concepts, gist, benefits, and benefits of the novel and non-obvious techniques described herein. Selected embodiments are further described in the Detailed Description below. Accordingly, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.

It is an object of the present invention to propose various schemes, concepts, designs, methods, systems and apparatuses related to enhanced mechanisms for SL resource allocation. The various schemes proposed here can provide enhanced mechanisms for SL resource allocation as a solution to specific problems in V2X communication.

In one aspect, a method may include sending assistance information to a peer user equipment (UE) regarding sensing results of one or more resources reserved for SL communication. The method may also include receiving transmissions from the counterpart UE on resources selected by the counterpart UE based on the assistance information.

In another aspect, a method may include receiving assistance information from a peer UE regarding sensing results of one or more resources reserved for SL communication. The method may also include performing transmission to the counterpart UE on resources selected based on the assistance information.

In another aspect, an apparatus can include a transceiver and a processor coupled to the transceiver. Transceivers can be configured to communicate wirelessly in V2X networks. The processor may be configured to send assistance information on the sensing result of the one or more resources reserved for SL communication to the opposite UE via the transceiver. The processor may also be configured to receive, via the transceiver, transmissions from the counterpart UE on resources selected by the counterpart UE based on the assistance information.

In another aspect, an apparatus can include a transceiver and a processor coupled to the transceiver. Transceivers can be configured to communicate wirelessly in V2X networks. The processor may be configured to receive, via the transceiver, assistance information on the sensing result of one or more resources reserved for SL communication from the counterpart UE. The processor may also be configured to perform, via the transceiver, the transmission to the counterpart UE on resources selected based on the assistance information.

The sidelink resource configuration method and device provided by the present invention can improve the reliability of sidelink communication and reduce the overall delay.

It is worth noting that while the descriptions provided herein are within the context of specific radio access technologies, networks and network topologies such as fifth generation (5G) and NR V2X, the concepts, schemes and any variations/ Derivatives can be derived from, used for, and implemented by any other type of radio access technology, network and network topology, such as, but not limited to, Long-Term Evolution (LTE), LTE-Advanced, Advanced LTE-Advanced Pro, Wireless Fidelity (Wi-Fi) and any future network and technology. Accordingly, the scope of the present invention is not limited to the examples described herein.

Detailed examples and implementations of the claimed subject matter are disclosed herein. It should be understood, however, that the disclosed embodiments and implementations are merely illustrative of the claimed subject matter, which may be embodied in various forms. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that this description of the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the following description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview

The embodiments of the present invention relate to various technologies, methods, solutions and/or solutions for SL resource configuration enhancement in NR V2X communication. According to the invention, several possible solutions are implemented individually or in combination. That is, although these possible solutions are described individually below, two or more of these possible solutions may also be implemented in combination or otherwise.

Under the proposed scheme for SL resource allocation according to the present invention, a receiver (Rx) user equipment (UE)-assisted resource allocation mechanism can be applied to improve the reliability of SL communication and reduce the overall delay. This Rx UE-assisted resource configuration mechanism may be implemented or used alone or in conjunction with a counterpart transmitter (Tx) UE based sensing and resource configuration mechanism. Under the proposed scheme, the Rx UE can autonomously send (eg, via broadcast, unicast, or multicast) feedback information (interchangeably herein) to the opposite Tx UE (also referred to herein as "Tx UE"). referred to as "auxiliary information"), or the Rx UE may trigger the transmission of sidelink control information (SCI) and/or data by the Rx UE upon receipt from the Tx UE (e.g. via broadcast, unicast or multicast) ) auxiliary information.

The auxiliary information sent by the Rx UE as feedback to the Tx UE may carry resource sensing information, channel state information (CSI), observed Doppler/delay/moving velocity related information from the Rx UE (may involve absolute velocity or Tx relative velocity between the UE and the Rx UE) and/or multiple-input multiple-output (MIMO) related feedback information to specify the Tx UE implementation resource, modulation coding scheme (MCS), MIMO and/or demodulation reference signal (DMRS) mode Choose an action. Resource sensing information may include preferred or non-preferred (represented herein as "(non)preferred") time and/or frequency resources based on sensing operations performed by the Rx UE. The sensing operation on the Rx UE side is similar to the sensing operation on the Tx UE side. That is, the Rx UE can perform the reference signal received power (RSRP) measurement on the Rx resource pool for reception (or the Tx resource pool for transmission performed by the peer Tx UE) by measuring the reference signal received power (RSRP) according to the detected SCI of other UEs on the resource pool. Sensing operation.

Under the proposed scheme, the Tx UE can inform the Rx UE of the Rx resource pool for sensing (or the Tx resource pool for transmission by the Tx UE) through signaling, so that the Rx UE can provide sensing results to assist the Tx UE Make a resource selection or re-selection (represented here as a "(re)selection"). Alternatively, the resource pool to be sensed may be configured or preconfigured (represented herein as "(pre)configured"), and in this case no signaling from Tx UE to Rx UE is required.

Based on a number of factors, including: the measured RSRP, the transmission priority of the peer Tx UE, the sensed priority of the UE, and/or the corresponding resources reserved by the SCI from the peer Tx UE, the Rx UE may From the perspective of judging whether the resources reserved by the peer Tx UE are preferable, so as to avoid the hidden node problem. Here, the transmission priority order of the opposite Tx UE may be determined according to the priority order indicated in the SCI, or the (pre)configured priority order of a medium access control (MAC) flow or a link pair between the Rx UE and the Tx UE. When performing sensing, the priority order of the sensed UE can be obtained from the SCI of other UEs as the priority order detected by the Rx UE. In order to facilitate the decision of the Rx UE, the RSRP threshold may be set according to a combination of the transmission priority of the peer Tx UE and the sensed transmission priority of the UE. The Rx UE may compare the sensed measured RSRP of the Tx UE's control DMRS transmission and/or data DMRS transmission to an RSRP threshold to determine if the reserved resources are preferred/non-preferred or acceptable or unacceptable (represented herein as "(un)acceptable"). For example, where the measured RSRP is below the RSRP threshold, the reserved resources may be determined to be acceptable or preferred. Otherwise, where the measured RSRP is higher than the RSRP threshold, the reserved resources may be determined to be unacceptable or non-preferred.

In addition to the (un)preferred/(un)acceptable resources determined based on the resource sensing results, in feedback, the Rx UE can also provide CSI information to the Tx UE. Such CSI information may correspond to preferred/acceptable (reserved) resources that may be used for MCS selection once the resources are used by the Tx UE. In addition, the Doppler/delay/speed of action related information or preferred DMRS pattern observed from the Rx UE's perspective can be carried in the auxiliary information so that the Tx UE can select an appropriate DMRS pattern (eg, a certain number of DMRS symbols) for transmission.

Under the proposed scheme according to the present invention, preferably, the Rx UE transmits assistance information to the Tx UE some time before the Tx UE performs transmission on one or more reserved Tx resources. After receiving the assistance information, the Tx UE may consider the assistance information when performing resource reselection and/or resource utilization. In addition, the Rx UE can obtain information about the reserved Tx resources based on the SCI received from the Tx UE, and based on this information, the Rx UE can determine the feedback timing based on the timing for transmission on the reserved Tx resources, and of course Consider the extra time for the Tx UE to process the auxiliary information. Therefore, the Rx UE may update the Tx UE with the latest assistance information, eg, the updated feedback information based on the determined feedback timing for sending the assistance information. That is, the Rx UE may continue to update the assistance information until the determined feedback timing for sending the assistance information to the Tx UE.

Under the proposed scheme, the Rx UE may perform partial sensing (eg, periodic sensing or aperiodic one-shot sensing) or full sensing to determine the preference and/or acceptability of reserved resources. The Rx UE then sends assistance information before the peer Tx UE transmits on the reserved resources or before (re)selection or re-evaluation for the reserved resources. In the case of multiple available or eligible resources for transmission of assistance information, the resource closest to the re-evaluation time of the reserved resources indicated by the Tx UE in the SCI (optionally also taking into account additional assistance information processing time) may be Prioritize selection so that up-to-date assistance information is sent to the Tx UE to facilitate efficient resource (re)selection or re-evaluation. For example, the latest time for the Rx UE to transmit the assistance information to the Tx UE may be the time to reserve resources minus the sum of the processing time of the Tx UE re-evaluation/reselection and the processing time of the Tx UE to receive and parse the assistance information. The Rx UE may use the transmission time of the reserved resource indicated in the SCI as the packet delay budget to (re)select the resource for transmitting the assistance information. Alternatively, the latest transmission time of the assistance information (eg the packet delay budget for the assistance information) may be derived or (pre)configured based on the time the resource is reserved and the duration indicated in the SCI (eg the required processing time). For example, the latest time (or packet delay budget) for assistance information transmission may be equal to the time of the reserved resource minus the duration, where the duration includes the processing time of the Tx UE. In the case where this processing time is UE specific, the peer Tx UE may indicate the processing time in the SCI. Otherwise, in the case of generic processing time, the processing time is (pre)configured and exchanged between UEs via signaling (eg PC5 Radio Resource Control (RRC) signaling) or specified in the specification.

Under the proposed solution according to the present invention, the transmission priority order of the assistance information indicated in the SCI can be set as a (pre)configured priority order or a priority order corresponding to the transmission of assistance information triggered by the SCI from the peer Tx UE. When the peer Tx UE reserves a plurality of resources in the SCI, before transmitting on the reserved resources, auxiliary information corresponding to each reserved resource is sent.

It is worth noting that the assistance information carries the latest feedback information to assist the Tx UE. In the case of re-selecting the resource for transmitting the auxiliary information, the content of the auxiliary information may be updated according to the latest information before the time of the re-selected resource for transmitting the auxiliary information. The processing time for updating the assistance information at the Rx UE before transmission can be considered. That is, the assistance information is updated based on the latest information derived from the time (re)selected for transmission of the assistance information and the corresponding processing time at the Rx UE at or before the latest information. For example, the time instant may be equal to the time (re)selected for assistance information transmission minus the processing time at the Rx UE.

Under the proposed scheme according to the present invention, auxiliary information may be carried in a separate SCI with or without a Physical Sidelink Shared Channel (PSSCH). Alternatively, auxiliary information can also be carried in the PSSCH, especially when there is traffic (eg, data) transmitted in the PSSCH. In some cases, the second SCI of the two-stage SCI may be used to carry auxiliary information with an indication of whether to carry auxiliary information in the second SCI and/or whether to carry the auxiliary information with or without a data channel Fields in the second SCI (eg PSSCH) that carry auxiliary information.

Under the proposed scheme according to the present invention, the resources used to transmit auxiliary information (carried in the second SCI, PSSCH or any feedback channel) may be implicitly and/or explicitly derived from the SCI received by the peer Tx UE. For example, the resources may be determined based on a function of Tx UE identities (IDs) and/or Rx UE IDs in a (pre-)configured set of resources (eg, sets of time resources and/or frequency resources). Since link pairs or Tx/Rx UE IDs are unique, the frequency resources used for assistance information transmission may be unique or different from those of other link pairs. The time to reserve the resource may be a function of the time to reserve the resource indicated in the SCI. For example, considering the processing time of the Tx UE, the reserved resource time may be a time offset from the time of the reserved resource or the re-evaluation time of the reserved resource (eg, exported/indicated in the above-mentioned SCI). The time offset can be fixed, indicated in the SCI, or (pre)configured. Additionally, time offsets can be (pre)configured for each resource pool. Therefore, the Rx UE may determine the time/frequency resources in the (pre)configured resource set based on the SCI received from the Tx UE for the assistance information carried in the second SCI, PSSCH or any (feedback) channel transmission. Advantageously, such explicit signaling or implicit reasoning for resource determination may account for the avoidance of sensing and resource selection processes for auxiliary information transmission.

Under the solution proposed in the present invention, in order to further reduce the signaling overhead of the auxiliary resource configuration of the Rx UE, instead of sending all the sensing results to the Tx UE, the Rx UE can send a plurality of sensing results (or CSI) sorted according to preference Information), where this preference can be measured by prioritization or RSRP. The value of N is configurable or predetermined. For example, the Rx UE may only provide information related to the three resources (N = 3) with the highest RSRP.

Figure 1 depicts an example scenario 100 under various proposed schemes involving the transmission of assistance information from an Rx UE to a peer Tx UE. In Phase 1, upon receipt of the SCI from the peer Tx UE at time m', the Rx UE may be triggered to perform resource selection within the selection window based on sensing (eg, partial sensing or full sensing) performed by the Rx UE in the past For transmitting auxiliary information, eg, during the sensing window. It is worth noting that the Rx UE can sense in the Tx resource pool of the opposite end Tx UE for the generation of auxiliary information, and can also sense in its own Tx resource pool for the transmission of auxiliary information. The Tx resource pool of the peer Tx UE can be (pre)configured for the Rx UE or indicated by PC-5 RRC signaling exchange between the Rx UE and the peer Tx UE. However, this may impose restrictions on the Tx resource pool used for transmission at the Tx UE. The SCI received at the first instant m' may indicate resources reserved at the second instant m'' (and processing time T_proc). The Rx UE may attempt to select one or more resources to transmit assistance information close to the time instant (m'' – T_proc), which may be at or before the re-evaluation time for resource reservation at m''. In phase 2, the Rx UE may send assistance information carrying the latest information on selected resources of n (≤ m'' - T_proc). In the third stage, the peer Tx UE can re-evaluate the reserved resources at m'' based on its own sensing results and auxiliary information from the Rx UE. The auxiliary information may indicate whether the reserved resources at m'' are preferred or acceptable. In the case where the reserved resources are acceptable, the assistance information may also indicate CSI information of the reserved resources and/or CSI information of other preferred resources according to the sensing and measurement performed by the Rx UE from the perspective of the Rx UE. The assistance information may further indicate a preferred DMRS pattern or Doppler related information for the Tx UE to select an appropriate DMRS pattern.

In summary, the highlights of the various proposals are summarized below.

Regarding the Rx UE-assisted resource configuration mechanism, the Rx UE may provide assistance information to the Tx UE some time before (eg, immediately before) the time when the Tx UE transmits the reserved resources to be used. The Rx UE can obtain the information on the reserved Tx resources from the SCI received from the Tx UE, and thus determine the feedback timing based on the moment of transmission on the reserved Tx resource by taking into account the additional time for the Tx UE to process the auxiliary information.

For the assistance information, the Rx UE may send the latest assistance information (eg, updated feedback information) based on the transmission timing of the assistance information.

Regarding the resource pool for sensing, the Tx UE can inform the Rx UE of the resource pool for sensing (or the resource pool for Tx UE transmission) by signaling, so that the Rx UE can provide sensing results to assist the Tx UE's Resource (re)selection. Alternatively, such resource pools may be (pre)configured, so no signaling is required.

Regarding the decision of resource preference or acceptance, the Rx UE may determine whether the resources reserved by the Tx UE are preferred or acceptable. Such determination may be based on one or more of a number of factors including, for example, but not limited to, measured RSRP, transmission priority of Tx UEs, sensed priority of UEs, and corresponding resources reserved by SCI from Tx UEs . In particular, the Rx UE may compare the measured RSRP of the sensed control and/or profile DMRS transmissions from the Tx UE to an RSRP threshold to determine whether the reserved resources are preferred or acceptable. A certain preference or non-preference for reserved resources may be indicated in assistance information sent by the Rx UE to the Tx UE. After receiving the assistance information from the Rx UE, the Tx UE can select and use resources according to the Tx UE's own sensing results and assistance information (including the sensing results of the Rx UE) or only based on the assistance information. Alternatively, after receiving the assistance information from the Rx UE, the Tx UE may reselect resources based on the assistance information. Illustrative Implementation

FIG. 2 illustrates an example communication environment 200 having an example apparatus 210 and an example apparatus 220 in accordance with an embodiment of the present invention. Each of apparatus 210 and apparatus 220 may perform various functions to implement schemes, techniques, procedures, and methods for SL resource allocation enhancement in NR V2X communications, including various above-described schemes described in the procedures below.

Each of device 210 and device 220 may be part of an electronic device, such as a UE such as a vehicle, a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each of apparatus 210 and apparatus 220 may be implemented in a vehicle, smartphone, smart watch, personal digital assistant, digital camera, or computing device such as a tablet, laptop, or notebook computer. Each of device 210 and device 220 may also be part of a machine-type device, which may be an IoT or NB-IoT device such as a fixed or stationary device, a home device, a wired communication device, or a computing device. For example, each of device 210 and device 220 may be implemented in a smart thermostat, smart refrigerator, smart door lock, wireless speaker, or home control center. In some embodiments, each of device 210 and device 220 may also be implemented in one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, a Or multiple multi-core processors, or one or more complex instruction set computing (Complex-Instruction-Set-Computing, CISC) processors. Apparatus 210 and apparatus 220 each include at least some of the elements shown in Figure 2, eg, processor 212 and processor 222, respectively. Each of the device 210 and the device 220 may further comprise one or more other elements (eg, internal power supply, display device and/or user peripherals) unrelated to the solution proposed by the present invention, but for simplicity and brevity, the device 210 and these other components of device 220 are not depicted in Figure 2, nor are they described below.

In many embodiments, at least one of device 210 and device 220 may be part of an electronic device, which may be a vehicle, roadside unit (RSU), network node or base station (eg, eNB, gNB, TRP), small community, router or gateway. For example, at least one of device 210 and device 220 may be implemented as a vehicle in a V2X or V2X network, an eNodeB of an LTE, LTE-Advanced or LTE-Advanced Pro network, or 5G , NR, IoT or gNB for NB-IoT network. Alternatively, at least one of apparatus 210 and apparatus 220 may be implemented in one or more IC dies, such as, but not limited to, one or more single-core processors, one or more multi-core processors, or one or more CISCs processor.

In one aspect, each of processor 212 and processor 222 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though the singular term "processor" is used herein to refer to processor 212 and processor 222, in accordance with the present invention, each of processor 212 and processor 222 may, in some implementations, comprise a plurality of processes processor, and in other embodiments may contain a single processor. In another aspect, each of the processor 212 and the processor 222 may be implemented in hardware (and, optionally, firmware) having electronic components that may include, for example and without limitation, implementation based on one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, configured and arranged for the particular purposes of the present invention and/or one or more varactors. In other words, in accordance with various embodiments of the present invention, at least in some embodiments, each of processor 212 and processor 222 may function as a special purpose machine specially designed, configured, and arranged to implement various implementations of the present invention. The example performs specific tasks that include SL resource configuration enhancements in NR V2X communications.

In some embodiments, the device 210 may further include a transceiver 216 coupled to the processor 212 as a communication device, and the transceiver 216 is capable of wirelessly transmitting and receiving data. In some implementations, the device 210 may further include a memory 214 coupled to the processor 212 and capable of being accessed by the processor 212 and storing data therein. In some embodiments, the device 220 may also include a transceiver 226 coupled to the processor 222 as a communication device, and the transceiver 226 is capable of wirelessly transmitting and receiving data. In some implementations, the device 220 may further include a memory 224 coupled to the processor 222 and capable of being accessed by the processor 222 and storing data therein. Thus, device 210 and device 220 can communicate wirelessly with each other through transceiver 216 and transceiver 226, respectively.

To aid in better understanding, the following description of the operation, functionality and capabilities of each of device 210 and device 220 is provided in the context of an NR V2X communication environment, where device 210 is implemented in or as a wireless communication device, communication device or The first UE (which may be the Rx UE or the peer Tx UE in the scenario 100 ) and the device 220 is implemented or implemented as a wireless communication device, a communication device or a second UE (which may be the peer Tx UE in the scenario 100 ) UE or Rx UE).

Under various proposals related to the enhancement of SL resource configuration in NR V2X communication according to the present invention, the processor 212 of the apparatus 210 as an Rx UE may communicate via the transceiver 216 to a peer UE (eg, as a peer Tx UE) Means 220) send auxiliary information about the sensing result of one or more reserved resources for SL communication. Additionally, the processor 212 may receive transmissions from the counterpart UE via the transceiver 216 on resources selected by the counterpart UE based on the assistance information.

In some embodiments, the assistance information may indicate the counterpart UE's preference or non-preference to use one or more reserved resources in performing transmissions.

In some implementations, the processor 212 may perform additional operations. For example, the processor 212 may be based on the measured RSRP on each of the one or more resources, the transmission priority of the counterpart UE, the priority of one or more other sensed UEs, and the information received from the counterpart UE. One or more of one or more corresponding resources reserved by SCI signaling to determine preference or non-preference. In some embodiments, the processor 212 may compare the measured RSRP of one or more other sensed UEs' DMRS transmissions to an RSRP threshold when determining preference or non-preference.

In some embodiments, when sending the assistance information, the processor 212 may send the assistance information some time before the time when the opposite UE performs the transmission. In some embodiments, the period of time may at least include the processing time used by the opposite UE when processing the assistance information.

In some embodiments, the processor 212 may perform certain operations when transmitting the assistance information. For example, the processor 212 may determine the feedback timing for sending the assistance information based on the time when the counterpart UE performs transmission and the processing time used by the counterpart UE in processing the assistance information. Additionally, the processor 212 may update the auxiliary information until the auxiliary information is sent at the feedback timing.

In some implementations, the processor 212 may perform additional operations. For example, the processor 212 may receive SCI signaling from the peer UE. Additionally, the processor 212 may obtain information about one or more reserved resources from the SCI.

In some implementations, the processor 212 may perform other additional operations. For example, processor 212 may determine one or more resource pools. Furthermore, the processor 212 may perform sensing on the one or more resource pools to measure the RSRP of each resource in the one or more resource pools to provide sensing results. In some implementations, the one or more resource pools include one or both of an Rx resource pool used to perform reception operations and a Tx resource pool used by the counterpart UE to perform transmissions. In some embodiments, when determining the one or more resource pools, the processor 212 may perform any of the following operations: (a) receive signaling from the peer UE indicating the one or more resource pools; (b) based on the configuration Or preconfigured information to determine one or more resource pools.

Under various proposals related to SL resource configuration enhancements in NR V2X communications in accordance with the present invention, the processor 222 of the apparatus 220 as a Tx UE can communicate via the transceiver 226 from a peer UE (eg, the apparatus 210 as an Rx UE) Receive auxiliary information about sensing results of one or more resources reserved for SL communication. Furthermore, the processor 222 may perform the transmission to the counterpart UE via the transceiver 226 on resources selected based on the assistance information.

In some embodiments, the assistance information may indicate the counterpart UE's preference or non-preference regarding one or more reserved resources used in performing the transmission.

In some implementations, the processor 222 may perform certain operations while performing the transmission. For example, the processor 222 may perform sensing on the Tx resource pool to provide sensing results. Additionally, the processor 222 may select resources from the Tx resource pool based on the sensing results and auxiliary information.

In some embodiments, when performing the transmission, the processor 222 may perform: (a) selecting resources from a Tx resource pool based on the assistance information; or (b) reselecting resources from a different Tx resource pool based on the assistance information. Illustrative process

FIG. 3 shows an example process 300 according to an embodiment of the present invention. The process 300 can be an illustrative embodiment of the proposed solution for enhancing SL resource configuration in NR V2X communication according to the present invention. Flow 300 may represent aspects of feature implementation of device 210 and device 220 . Process 300 may include one or more operations, actions, or functions illustrated by one or more of blocks 310 , 320 . Although the various blocks shown are discrete, each block in process 300 may be split into more blocks, combined into fewer blocks, or some blocks may be deleted, depending on the desired implementation. In addition, the blocks of process 300 may be performed sequentially as shown in FIG. 3, or, alternatively, may be performed in a different sequence. Process 300 may also be repeated in part or in its entirety. Device 210, device 220, and/or any suitable wireless communication device, UE, roadside unit (RUS), base station, or machine type device may implement process 300. For illustrative purposes only and not limiting in scope, the following describes the device 210 as a first UE (eg, an Rx UE or a Tx UE in a V2X network) and the device 220 as a second UE (eg, a Tx UE or a Tx UE in a V2X network). Process 300 is described in the context of Rx UE). Process 300 may begin at block 310 .

At block 310, the process 300 may include the processor 212 of the device 210 as an Rx UE sending via the transceiver 216 to a counterpart UE (eg, the device 220 as a counterpart Tx UE) about one or more reservations for SL communication Auxiliary information for sensing results of multiple resources. Process 300 may proceed from block 310 to block 320 .

At block 320, the process 300 may include the processor 212 receiving, via the transceiver 216, a transmission from the counterpart UE on resources selected by the counterpart UE based on the assistance information.

In some embodiments, the assistance information may indicate the counterpart UE's preference or non-preference to use one or more reserved resources in performing transmissions.

In some implementations, process 300 may include processor 212 performing additional operations. For example, the process 300 may include the processor 212 based on the RSRP measured on each of the one or more resources, the transmission prioritization of the peer UE, the priority of one or more other sensed UEs, and a response from the peer UE. The preference or non-preference is determined by one or more of one or more corresponding resources reserved by the SCI signaling of the end UE. In some embodiments, in determining preference or non-preference, process 300 may include processor 212 comparing the measured RSRP of the DMRS transmissions of one or more other sensed UEs to an RSRP threshold.

In some embodiments, when sending the assistance information, the process 300 may include the processor 212 sending the assistance information a period of time before the time when the peer UE performs the transmission. In some embodiments, the period of time may at least include the processing time used by the opposite UE when processing the assistance information.

In some implementations, the process 300 may include the processor 212 performing certain operations when transmitting the assistance information. For example, the process 300 may include the processor 212 determining the feedback timing for sending the assistance information based on the time at which the counterpart UE performs the transmission and the processing time used by the counterpart UE in processing the assistance information. Additionally, the process 300 may include the processor 212 updating the auxiliary information until the auxiliary information is sent at the feedback timing.

In some implementations, process 300 may include processor 212 performing additional operations. For example, the process 300 may include the processor 212 receiving SCI signaling from the counterpart UE. Additionally, the process 300 may include the processor 212 obtaining information from the SCI about one or more reserved resources.

In some implementations, the process 300 may include the processor 212 performing other additional operations. For example, process 300 may include processor 212 determining one or more resource pools. Furthermore, the process 300 may include the processor 212 performing sensing on the one or more resource pools to measure the RSRP of each resource in the one or more resource pools to provide sensing results. In some implementations, the one or more resource pools include one or both of an Rx resource pool used to perform reception operations and a Tx resource pool used by the counterpart UE to perform transmissions. In some embodiments, in determining the one or more resource pools, the process 300 may include the processor 212 performing any of the following operations: (a) receiving signaling from the peer UE indicating the one or more resource pools; (b) ) determines one or more resource pools based on configuration or pre-configured information.

FIG. 4 shows an example process 400 according to an embodiment of the present invention. The process 400 may be a schematic embodiment of the proposed solution for enhancing SL resource configuration in NR V2X communication according to the present invention. Process 400 may represent aspects of feature implementation of device 210 and device 220 . Process 400 may include one or more operations, actions, or functions illustrated by one or more of blocks 410 , 420 . Although the various blocks are shown as discrete, each block in process 400 may be split into more blocks, combined into fewer blocks, or some blocks may be deleted, depending on the desired implementation. In addition, the blocks of process 400 may be performed sequentially as shown in FIG. 4, or, alternatively, may be performed in a different sequence. Process 400 may also be repeated in part or in its entirety. Device 210, device 220, and/or any suitable wireless communication device, UE, roadside unit (RUS), base station, or machine type device may implement process 400. For illustrative purposes only and not limiting in scope, the following describes the device 210 as a first UE (eg, an Rx UE or a Tx UE in a V2X network) and the device 220 as a second UE (eg, a Tx UE or a Tx UE in a V2X network). Process 400 is described in the context of Rx UE). Process 400 may begin at block 410 .

At block 410, the process 400 may include the processor 222 of the device 220 as a Tx UE receiving via the transceiver 226 from a counterpart UE (eg, the device 210 as an Rx UE) about one or more reservations for SL communication Auxiliary information about the sensing result of the resource. Flow 400 may proceed from block 410 to block 420.

At block 420, the process 400 may include the processor 222 performing, via the transceiver 226, transmissions to the peer UE on resources selected based on the assistance information.

In some embodiments, the assistance information may indicate the counterpart UE's preference or non-preference regarding one or more reserved resources used in performing the transmission.

In some implementations, the process 400 may include the processor 222 performing certain operations when performing the transmission. For example, the process 400 may include the processor 222 performing sensing on the Tx resource pool to provide sensing results. Additionally, the process 400 may include the processor 222 selecting resources from the Tx resource pool based on the sensing results and auxiliary information.

In some embodiments, when performing the transmission, the process 400 may include the processor 222 performing: (a) selecting a resource from a Tx resource pool based on the assistance information; or (b) re-selecting from a different Tx resource pool based on the assistance information resource. Additional information

The subject matter described herein sometimes shows various components contained within or connected with various other components. It should be understood, however, that these depicted architectures are examples only and that in fact many other architectures that achieve the same functionality can be implemented. In a conceptual sense, any arrangement of components that achieve the same function is effectively "associated" such that the desired function is achieved. Thus, regardless of architecture or intermediate components, any two components herein that are combined to achieve a particular function can be considered to be "associated" with each other such that the desired function is achieved. Likewise, any two components that are so related can also be considered to be "operatively connected" or "operatively coupled" to each other to achieve the desired function, and any two components that can be so related can also be considered "Operationally connected" to each other to achieve the desired function. Specific examples of operationally couplable include, but are not limited to, physically mateable and/or physically interacting components and/or wirelessly interacting and/or wirelessly interacting components and/or logically interacting and/or Logically interactable components.

Still further, with respect to substantially any plural and/or singular terms used herein, those of ordinary skill in the art can convert from the plural to the singular and/or from the singular to the plural as appropriate for the context and/or application. For the sake of clarity, various singular/plural reciprocities may be expressly set forth herein.

In addition, one of ordinary skill in the art will understand that the terms used herein generally, and in particular, terms used in the appended claims (eg, the subject of the appended claims) generally mean "Open-ended" terms, for example, the term "comprising" should be interpreted as "including but not limited to", the term "having" should be interpreted as "at least having", the term "including" should be interpreted as "including but not limited to", etc. Those of ordinary skill in the art will also understand that if a specific number of an introduced claim recitation is intended, such intent will be expressly recited in the claim, and in the absence of such recitation no such recitation exists. an intention. For example, as an aid to understanding, the appended claims may contain usage of the introductory phrases "at least one" and "one or more." However, use of such phrases should not be construed to imply that a claim list, by introduction of the indefinite article "a" or "an," limits any particular claim list containing such an introduced claim list to only An implementation of such an enumeration is included even when the scope of the same application includes the introductory phrases "one or more" or "at least one" and an indefinite article such as "a" or "an", for example, "a and and/or an" should be construed to mean "at least one" or "one or more", which also applies to the use of the definite article used to introduce a recitation of the claimed scope. Furthermore, even if a specific number of an introduced claim recitation is explicitly recited, one of ordinary skill in the art would recognize that such recitation should be construed to mean at least the recited number, eg, in the absence of In the context of other modifiers, an unmasked listing of "two listings" means at least two listings or two or more listings. Furthermore, where a convention similar to "at least one of A, B, and C, etc." is used, it is generally intended to be interpreted in the sense that one of ordinary skill in the art would understand the convention (eg, "" A system having at least one of A, B, and C" will include, but is not limited to, having A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A system with A, B, C, etc. together). Where a convention similar to "at least one of A, B, or C, etc." is used, in the sense that one of ordinary skill in the art would understand the convention, it is generally meant to be interpreted as such (eg, "Have A "A system of at least one of , B, or C" will include, but is not limited to, having A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or systems of A, B, and C, etc.). Those of ordinary skill in the art will also understand that, whether in the specification, the scope of the application and the drawings, any inflection word and/or phrase that actually represents two or more alternatives should be understood as Consider the possibility of including one of these items, either of these items, or both. For example, the phrase "A or B" would be understood to include the possibilities of "A" or "B" or "A and B".

From the foregoing, it will be understood that various embodiments of the present invention have been described herein for illustrative purposes and that various modifications may be made without departing from the scope and spirit of the invention. Therefore, the various embodiments disclosed herein are not meant to be limiting, the true scope and spirit being to be determined by the appended claims.

100: Scene 200: Communication Environment 210, 220: Devices 216, 226: Transceivers 212, 222: Processor 214, 224: memory 300, 400: Process 310, 320, 410, 420: Blocks

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this invention. The drawings illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It will be appreciated that in order to clearly illustrate the concepts of the present invention, the drawings are not necessarily to scale and that some of the components shown may be shown on a scale that exceeds the dimensions of the actual embodiments. FIG. 1 is an example scene diagram according to an embodiment of the present invention. FIG. 2 is a block diagram of an example communication environment according to an embodiment of the present invention. FIG. 3 is a flow diagram of an example process in accordance with an embodiment of the present invention. FIG. 4 is a flowchart of an example process in accordance with an embodiment of the present invention.

300: Process

310, 320: block

Claims (10)

A sidelink resource configuration method, comprising: sending an auxiliary information to a pair of end user equipments regarding a sensing result of one or more resources reserved for sidelink communication; and The transmission from the peer UE is received on the resource selected by the peer UE based on the auxiliary information. The sidelink resource allocation method according to claim 1, wherein the auxiliary information indicates the preference or non-preference of the peer UE to use the one or more reserved resources in performing the transmission. The sidelink resource configuration method according to claim 2, wherein based on the measured reference signal received power on each of the one or more resources, the transmission priority of the opposite UE, one or more the priority of a plurality of other sensed user equipments and one or more of one or more corresponding resources reserved by sidelink control information signaling from the peer user equipment to determine the preference or non-preferred. The sidelink resource configuration method according to claim 3, wherein the step of determining the preference or non-preference comprises a measurement reference transmitted by the demodulation reference signal of the one or more other sensed user equipments The signal received power is compared to a reference signal received power threshold. The sidelink resource configuration method according to claim 1, wherein the step of sending the auxiliary information comprises: sending the auxiliary information a period of time before the time when the peer UE performs transmission. The sidelink resource configuration method according to claim 5, wherein the period of time at least includes the processing time used by the peer UE when processing the auxiliary information. The sidelink resource configuration method according to claim 1, wherein the step of sending the auxiliary information comprises: determining the feedback timing for sending the auxiliary information based on the time at which the peer UE performs the transmission and the processing time used by the peer UE in processing the auxiliary information; and The auxiliary information is updated until the auxiliary information is sent at the feedback timing. The sidelink resource configuration method according to claim 1, further comprising: receiving sidelink control information signaling from the peer UE; and Information about the one or more reserved resources is obtained from the sidelink control information signaling. The sidelink resource configuration method according to claim 1, further comprising: identify one or more resource pools; and The sensing result is provided by performing sensing on the one or more resource pools to measure the reference signal received power of each resource in the one or more resource pools. A sidelink resource configuration method, comprising: receiving, from a pair of end user equipments, an auxiliary information regarding a sensing result of one or more resources reserved for sidelink communication; and The transmission to the peer UE is performed on the resource selected based on the assistance information.

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