US-12621780-B2 - Multiplexing sidelink-synchronization signal block (S-SSB) and physical sidelink control channel/physical sidelink shared channel (PSCCH/PSCCH) and fulfilment of occupancy channel bandwidth (OCB) for new radio-unlicensed (NR-U) sidelink

US12621780B2US 12621780 B2US12621780 B2US 12621780B2US-12621780-B2

Abstract

Wireless communications systems and methods related to multiplexing a sidelink-synchronization signal block (S-SSB) transmission with a physical sidelink control channel (PSCCH)/physical sidelink shared channel (PSSCH) transmission for occupancy channel bandwidth (OCB) fulfilment are provided. A user equipment (UE) determines a multiplex configuration for multiplexing a sidelink transmission with a S-SSB transmission in a sidelink bandwidth part (BWP). The UE communicates, in the sidelink BWP during a sidelink slot, the S-SSB transmission. The UE communicates, in the sidelink BWP during the sidelink slot, the sidelink transmission, where the S-SSB transmission and the sidelink transmission are communicated by multiplexing the sidelink transmission and the S-SSB transmission based on the multiplex configuration.

Inventors

Chih-Hao Liu
Jing Sun
Xiaoxia Zhang
Yisheng Xue
Changlong Xu
Ozcan Ozturk
Peter Gaal
Juan Montojo
Tao Luo

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260505
Application Date: 20200529

Claims (20)

1 . A method of wireless communication performed by a user equipment (UE), the method comprising: determining a multiplex configuration for multiplexing a sidelink transmission with a sidelink-synchronization signal block (S-SSB) transmission in a sidelink bandwidth part (BWP); communicating, in the sidelink BWP during a sidelink slot, the S-SSB transmission; and communicating, in the sidelink BWP during the sidelink slot, the sidelink transmission, wherein the communicating the S-SSB transmission and the communicating the sidelink transmission includes multiplexing the sidelink transmission and the S-SSB transmission based on the multiplex configuration.
2 . The method of claim 1 , wherein the communicating the S-SSB transmission comprises: communicating the S-SSB transmission at an offset from a lowest frequency of the sidelink BWP based on a synchronization raster.
3 . The method of claim 1 , wherein the communicating the S-SSB transmission comprises: communicating the S-SSB transmission aligned to a lowest frequency of the sidelink BWP.
4 . The method of claim 1 , wherein the communicating the sidelink transmission comprises: communicating at least of a physical sidelink control channel (PSCCH) transmission or a physical sidelink shared channel (PSSCH) transmission.
5 . The method of claim 4 , wherein the communicating the sidelink transmission further comprises: communicating the sidelink transmission in a first frequency interlace within the sidelink BWP, the PSCCH transmission and the PSSCH transmission being multiplexed in at least one of time or frequency.
6 . The method of claim 5 , wherein the first frequency interlace includes a plurality of resource blocks (RBs) spaced apart from each other by at least one other RB in the sidelink BWP, and wherein the communicating the sidelink transmission further comprises: communicating the PSCCH transmission in a lowest frequency RB and a highest frequency RB of the plurality of RBs; and communicating the PSSCH transmission in one or more remaining RBs of the plurality of RBs.
7 . The method of claim 5 , wherein the first frequency interlace includes a plurality of resource blocks (RBs) spaced apart from each other by at least one other RBs in the sidelink BWP, and wherein the communicating the sidelink transmission further comprises: communicating the sidelink transmission in a subset of the plurality of RBs excluding at least a lowest frequency RB of the plurality of RBs based on the S-SSB transmission being aligned to a lowest frequency of the sidelink BWP.
8 . The method of claim 7 , wherein the communicating the sidelink transmission further comprises: communicating the PSCCH transmission in a lowest frequency RB and a highest frequency RB of the subset of the plurality of RBs; and communicating the PSSCH transmission in one or more remaining RBs of subset of the plurality of RBs, wherein the method further comprises: monitoring for sidelink control information (SCI) during the sidelink slot, the monitoring comprising: performing blind decoding in the lowest frequency RB and the highest frequency RB of the subset of the plurality of RBs; and performing blind decoding in a lowest frequency RB and a highest frequency RB of the plurality of RBs.
9 . The method of claim 5 , further comprising: puncturing the PSSCH transmission based on the S-SSB transmission.
10 . The method of claim 5 , further comprising: rate-matching the PSSCH transmission based on the S-SSB transmission.
11 . The method of claim 10 , wherein the communicating the sidelink transmission further comprises: communicating, in the PSCCH transmission, sidelink control information (SCI) including rate-matching information for the PSSCH transmission.
12 . The method of claim 5 , wherein: the communicating the S-SSB transmission comprises: transmitting the S-SSB transmission, and the communicating the sidelink transmission comprises: transmitting at least one of a channel state information-reference signal (CSI-RS) or sidelink data in the first frequency interlace, the sidelink transmission multiplexed with the S-SSB transmission based an occupancy channel bandwidth (OCB) parameter.
13 . The method of claim 5 , wherein: the communicating the S-SSB transmission comprises: receiving the S-SSB transmission, and wherein the communicating the sidelink transmission comprises: receiving at least one of a channel state information-reference signal (CSI-RS) or sidelink data in the first frequency interlace.
14 . The method of claim 4 , wherein the communicating the sidelink transmission comprises: communicating the PSCCH transmission and the PSSCH transmission in a first subchannel within the sidelink BWP non-overlapping with a frequency resource used for the S-SSB transmission, the PSCCH transmission and the PSSCH transmission being multiplexed in time.
15 . The method of claim 14 , further comprising: determining whether to select a first resource pool including a plurality of frequency interlaces in the sidelink BWP or a second resource pool including a plurality of subchannels in the sidelink BWP for communicating the sidelink transmission in the sidelink slot based on whether the sidelink slot is configured for the S-SSB transmission, the plurality of subchannels including the first subchannel.
16 . The method of claim 15 , further comprising: monitoring for sidelink control information (SCI) in the PSCCH transmission within the first subchannel in the second resource pool based on the sidelink slot being configured for the S-SSB transmission.
17 . The method of claim 15 , further comprising: monitoring, for first sidelink control information (SCI) during a further sidelink slot different from the sidelink slot, the monitoring comprising performing blind decoding in at least one of the first resource pool or the second resource pool.
18 . The method of claim 15 , further comprising: selecting the first subchannel from the plurality of subchannels for communicating the sidelink transmission based on an occupancy channel bandwidth (OCB) parameter.
19 . The method of claim 18 , wherein the selecting the first subchannel comprises: prioritizing the first subchannel over a second subchannel of the plurality of subchannels for communicating the sidelink transmission based on the first subchannel being at a higher frequency than the second subchannel.
20 . A user equipment (UE) comprising: a processor configured to: determine a multiplex configuration for multiplexing a sidelink transmission with a sidelink-synchronization signal block (S-SSB) transmission in a sidelink bandwidth part (BWP); and a transceiver configured to: communicate, in the sidelink BWP during a sidelink slot, the S-SSB transmission; and communicate, in the sidelink BWP during the sidelink slot, the sidelink transmission, wherein the transceiver configured to communicate the S-SSB transmission and the sidelink transmission is configured to multiplex the sidelink transmission and the S-SSB transmission based on the multiplex configuration.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a 35 U.S.C. 371 National Phase entry of Patent Cooperation Treaty (PCT) Application No. PCT/CN2020/093181, filed May 29, 2020, which is hereby expressly incorporated herein by reference in its entirety. TECHNICAL FIELD This application relates to wireless communication systems, and more particularly to multiplexing a sidelink-synchronization signal block (S-SSB) transmission with a physical sidelink control channel (PSCCH)/physical sidelink shared channel (PSSCH) transmission in a shared radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum) shared by multiple network operating entities. INTRODUCTION 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). A wireless multiple-access communications system may include a number of base stations (BS s), each simultaneously supporting communications for multiple communication devices, which may be otherwise known as user equipment (UE). To meet the growing demands for expanded mobile broadband connectivity, wireless communication technologies are advancing from the long term evolution (LTE) technology to a next generation new radio (NR) technology, which may be referred to as 5th Generation (5G). For example, NR is designed to provide a lower latency, a higher bandwidth or a higher throughput, and a higher reliability than LTE. NR is designed to operate over a wide array of spectrum bands, for example, from low-frequency bands below about 1 gigahertz (GHz) and mid-frequency bands from about 1 GHz to about 6 GHz, to high-frequency bands such as millimeter wave (mmWave) bands. NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed and shared spectrum. Spectrum sharing enables operators to opportunistically aggregate spectrums to dynamically support high-bandwidth services. Spectrum sharing can extend the benefit of NR technologies to operating entities that may not have access to a licensed spectrum. In a wireless communication network, a BS may communicate with a UE in an uplink direction and a downlink direction. Sidelink was introduced in LTE to allow a UE to send data to another UE without tunneling through the BS and/or an associated core network. The LTE sidelink technology had been extended to provision for device-to-device (D2D) communications, vehicle-to-everything (V2X) communications, and/or cellular vehicle-to-everything (C-V2X) communications. Similarly, NR may be extended to support sidelink communications, D2D communications, V2X communications, and/or C-V2X over licensed bands and/or unlicensed bands. BRIEF SUMMARY OF SOME EXAMPLES The following summarizes some aspects of the present disclosure to provide a basic understanding of the discussed technology. This summary is not an extensive overview of all contemplated features of the disclosure and is intended neither to identify key or critical elements of all aspects of the disclosure nor to delineate the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the disclosure in summary form as a prelude to the more detailed description that is presented later. For example, in an aspect of the disclosure, a method of wireless communication performed by a user equipment (UE), the method includes determining a multiplex configuration for multiplexing a sidelink transmission with a sidelink-synchronization signal block (S-SSB) transmission in a sidelink bandwidth part (BWP); communicating, in the sidelink BWP during a sidelink slot, the S-SSB transmission; and communicating, in the sidelink BWP during the sidelink slot, the sidelink transmission, where the communicating the S-SSB transmission and the communicating the sidelink transmission includes multiplexing the sidelink transmission and the S-SSB transmission based on the multiplex configuration. In an additional aspect of the disclosure, a method of wireless communication performed by a base station (BS), the method includes determining a multiplex configuration for multiplexing a sidelink transmission with a sidelink-synchronization signal block (S-SSB) transmission in a sidelink bandwidth part (BWP); and transmitting, to a user equipment (UE), the multiplex configuration. In an additional aspect of the disclosure, a user equipment (UE) includes a processor configured to determine a multiplex configuration for multiplexing a sidelink transmission with a sidelink-synchronization signal block (S-SSB) transmission in a sidelink bandwidth part (BWP); and a transceiver configured to communicate, in the sidelink BWP during a sidelink slot, the S-SSB transmission; and communicate, in the sidelink B