US-20260129660-A1 - INDICATION OF UNUSED TRANSMISSION OCCASIONS FOR SIDELINK COMMUNICATION

US20260129660A1US 20260129660 A1US20260129660 A1US 20260129660A1US-20260129660-A1

Abstract

Certain aspects of the present disclosure provide techniques for wireless communications. An example method includes obtaining a configured grant (CG) configuration indicating a plurality of sidelink transmission occasions in a CG period; and sending, associated with a multi-block sidelink data transmission on the plurality of sidelink transmission occasions, an indication of an unused status for one or more sidelink transmission occasions of the plurality of sidelink transmission occasions.

Inventors

Shijun Wu
Kapil Gulati
Huilin Xu

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260507
Application Date: 20241107

Claims (20)

1 . An apparatus for wireless communications, comprising a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause a user equipment (UE) to: obtain a configured grant (CG) configuration indicating a plurality of sidelink transmission occasions in a CG period; and send, associated with a multi-block sidelink data transmission on the plurality of sidelink transmission occasions, an indication of an unused status for one or more sidelink transmission occasions of the plurality of sidelink transmission occasions.
2 . The apparatus of claim 1 , wherein the indication of the unused status is based at least in part on a packet size associated with the multi-block sidelink data transmission.
3 . The apparatus of claim 2 , wherein the indication of the unused status is based at least in part on at least one of: a number of blocks of the multi-block sidelink data transmission, or a number of retransmissions associated with the multi-block sidelink data transmission.
4 . The apparatus of claim 1 , wherein the processing system is configured to further cause the UE to receive a configuration of a resource, wherein the processing system, to cause the UE to send the indication, is configured to cause the UE to send the indication on the resource.
5 . The apparatus of claim 4 , wherein the resource is an uplink resource, and wherein the processing system, to cause the UE to send the indication, is configured to cause the UE to send the indication to a network entity.
6 . The apparatus of claim 4 , wherein the resource is a periodic resource that occurs earlier in the CG period than at least one sidelink transmission occasion of the plurality of sidelink transmission occasions.
7 . The apparatus of claim 1 , wherein the indication further indicates one or more physical sidelink shared channel (PSSCH) resources associated with the CG configuration.
8 . The apparatus of claim 7 , wherein the one or more PSSCH resources are used for the multi-block sidelink data transmission.
9 . The apparatus of claim 7 , wherein the one or more PSSCH resources are reserved for the UE, and wherein the indication indicates the one or more PSSCH resources as having the unused status.
10 . The apparatus of claim 1 , wherein the one or more sidelink transmission occasions are a latest one or more sidelink transmission occasions of the CG period.
11 . The apparatus of claim 1 , wherein the multi-block sidelink data transmission includes a set of blocks, wherein the unused status for the one or more sidelink transmission occasions is based at least in part on the set of blocks and a quantity of retransmissions of the set of blocks.
12 . The apparatus of claim 11 , wherein the processing system is configured to cause the UE to send the multi-block sidelink data transmission with the set of blocks on an earliest set of sidelink transmission occasions of the CG period.
13 . The apparatus of claim 12 , wherein to cause the UE to send the multi-block sidelink data transmission, the processing system is configured to cause the UE to send one or more initial transmissions of the set of blocks prior to the quantity of retransmissions of the set of blocks.
14 . The apparatus of claim 1 , wherein the CG configuration indicates a mapping between the plurality of sidelink transmission occasions and a set of blocks of the multi-block sidelink data transmission.
15 . The apparatus of claim 1 , wherein the multi-block sidelink data transmission includes a first block and a second block, wherein the first block is associated with an earliest set of sidelink transmission occasions of the plurality of sidelink transmission occasions, and wherein the second block is associated with a later set of sidelink transmission occasions, of the plurality of sidelink transmission occasions, that occur later than the earliest set of sidelink transmission occasions.
16 . The apparatus of claim 1 , wherein the multi-block sidelink data transmission includes a first block associated with a first set of sidelink transmission occasions of the plurality of sidelink transmission occasions and a second block associated with a second set of sidelink transmission occasions of the plurality of sidelink transmission occasions, wherein the first set of sidelink transmission occasions are interleaved with the second set of sidelink transmission occasions in time.
17 . The apparatus of claim 1 , wherein the indication indicates a quantity of the one or more sidelink transmission occasions having the unused status.
18 . The apparatus of claim 1 , wherein the indication comprises a bitmap that indicates the one or more sidelink transmission occasions having the unused status.
19 . A method for wireless communications by a user equipment (UE), comprising: obtaining a configured grant (CG) configuration indicating a plurality of sidelink transmission occasions in a CG period; and sending, associated with a multi-block sidelink data transmission on the plurality of sidelink transmission occasions, an indication of an unused status for one or more sidelink transmission occasions of the plurality of sidelink transmission occasions.
20 . An apparatus for wireless communications, the apparatus comprising: means for obtaining a configured grant (CG) configuration indicating a plurality of sidelink transmission occasions in a CG period; and means for sending, associated with a multi-block sidelink data transmission on the plurality of sidelink transmission occasions, an indication of an unused status for one or more sidelink transmission occasions of the plurality of sidelink transmission occasions.

Description

INTRODUCTION Field of the Disclosure Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for sidelink communications. Description of Related Art Wireless communications systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, or other similar types of services. These wireless communications systems may employ multiple-access technologies capable of supporting communications with multiple users by sharing available wireless communications system resources with those users. Although wireless communications systems have made great technological advancements over many years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Accordingly, there is a continuous desire to improve the technical performance of wireless communications systems, including, for example: improving speed and data carrying capacity of communications, improving efficiency of the use of shared communications mediums, reducing power used by transmitters and receivers while performing communications, improving reliability of wireless communications, avoiding redundant transmissions and/or receptions and related processing, improving the coverage area of wireless communications, increasing the number and types of devices that can access wireless communications systems, increasing the ability for different types of devices to intercommunicate, increasing the number and type of wireless communications mediums available for use, and the like. Consequently, there exists a need for further improvements in wireless communications systems to overcome the aforementioned technical challenges and others. SUMMARY Certain aspects provide a method for wireless communications by a user equipment (UE). The method includes obtaining a configured grant (CG) configuration indicating a plurality of sidelink transmission occasions in a CG period; and sending, associated with a multi-block sidelink data transmission on the plurality of sidelink transmission occasions, an indication of an unused status for one or more sidelink transmission occasions of the plurality of sidelink transmission occasions. Other aspects provide: one or more apparatuses operable, configured, or otherwise adapted to perform any portion of any method described herein (e.g., such that performance may be by only one apparatus or in a distributed fashion across multiple apparatuses); one or more non-transitory, computer-readable media comprising instructions that, when executed by one or more processors of one or more apparatuses, cause the one or more apparatuses to perform any portion of any method described herein (e.g., such that instructions may be included in only one computer-readable medium or in a distributed fashion across multiple computer-readable media, such that instructions may be executed by only one processor or by multiple processors in a distributed fashion, such that each apparatus of the one or more apparatuses may include one processor or multiple processors, and/or such that performance may be by only one apparatus or in a distributed fashion across multiple apparatuses); one or more computer program products embodied on one or more computer-readable storage media comprising code for performing any portion of any method described herein (e.g., such that code may be stored in only one computer-readable medium or across computer-readable media in a distributed fashion); and/or one or more apparatuses comprising one or more means for performing any portion of any method described herein (e.g., such that performance would be by only one apparatus or by multiple apparatuses in a distributed fashion). By way of example, an apparatus may comprise a processing system, a device with a processing system, or processing systems cooperating over one or more networks. An apparatus may comprise one or more memories; and one or more processors configured to cause the apparatus to perform any portion of any method described herein. In some examples, one or more of the processors may be preconfigured to perform various functions or operations described herein without requiring configuration by software. The following description and the appended figures set forth certain features for purposes of illustration. BRIEF DESCRIPTION OF DRAWINGS The appended figures depict certain features of the various aspects described herein and are not to be considered limiting of the scope of this disclosure. FIG. 1 depicts an example wireless communications network. FIG. 2 depicts an example disaggregated base station architecture. FIG. 3 depicts aspects of network entities and a user equipment (UE). FIGS. 4A, 4B, 4C, and 4D depict various example aspects of data structures for a wireless communications network. FIG. 5 depicts an example of sidelink communications. FIG. 6 d