公开(公告)号：US20220272543A1

公开(公告)日：2022-08-25

申请号：US17184960

申请日：2021-02-25

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Attia Abotabl ,  Muhammad Sayed Khairy Abdelghaffer ,  Krishna Kiran Mukkavilli

IPC: H04W16/14 ,  H04W74/08 ,  H04L5/14 ,  H04W28/26 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A communication device, which may be known as user equipment (UE), may determine a set of resources for a channel access procedure (e.g. a listen-before-talk (LBT) operation) in a shared radio frequency spectrum band. The set of resources may include one or more zero-power reference signal (ZP-RS) resources, one or more reserved channel access resources, or both. The UE may perform, while operating in a full duplex mode and during a duration in which the UE has not been scheduled to receive any downlink transmission, the channel access procedure on the set of resources for a channel in the shared radio frequency spectrum band. Based on the result of the channel access procedure, the UE may transmit an uplink transmission over the channel.