公开(公告)号：US20240163910A1

公开(公告)日：2024-05-16

申请号：US18548430

申请日：2021-04-14

Applicant: QUALCOMM Incorporated

Inventor： Guibing GU ,  Jintao HOU ,  Cheol Hee PARK ,  Hongjin GUO ,  Abha KHOSLA

IPC: H04W72/40 ,  H04L5/00 ,  H04W72/54

CPC classification number: H04W72/40 ,  H04L5/0078 ,  H04W72/54

Abstract: Certain aspects of the present disclosure provide techniques for sidelink communications. A method that may be performed by a user equipment (UE) includes monitoring a latency between a packet arrival time from an upper layer at the UE and an over-the-air (OTA) packet transmission time. The latency is based at least in part on, a first number of subframes reserved for a sidelink synchronization signal (SLSS) and/or a second number of subframes reserved based on a configured subframe bitmap. The method includes triggering a transmit resource selection at the UE when the latency exceeds a threshold latency.

公开(公告)号：US20230362972A1

公开(公告)日：2023-11-09

申请号：US18040770

申请日：2021-09-23

Applicant: QUALCOMM Incorporated

Inventor： Cheol Hee PARK ,  Yue YIN ,  Guibing GU ,  Shuping CHEN

IPC: H04W72/542 ,  H04W72/53 ,  H04W72/11

CPC classification number: H04W72/542 ,  H04W72/11 ,  H04W72/53

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a message to be transmitted over a wireless channel, such as a vehicle-to-everything (V2X) system. The UE may determine a channel reservation limit for reserving resources on the wireless channel for the message based on a channel busy ratio for the wireless channel. The UE may determine that available resources are insufficient for both an initial transmission of the message and a retransmission of the message based on the channel reservation limit. The UE may reserve a resource on the wireless channel for the initial transmission of the message based on the available resources being insufficient for both the initial transmission of the message and the retransmission of the message.