公开(公告)号：US20190200366A1

公开(公告)日：2019-06-27

申请号：US16228200

申请日：2018-12-20

Applicant: QUALCOMM Incorporated

Inventor： Cheol Hee PARK ,  Ashish Shankar IYER ,  Arvind Vardarajan SANTHANAM ,  Hongsan SHENG ,  Subramanya RAO ,  Feng LU ,  Santosh Kumar RONGALA ,  Li SHENG ,  Yuanbo WANG

IPC: H04W72/08 ,  H04W24/08 ,  H04B17/318 ,  H04L12/26 ,  H04W4/40

CPC classification number: H04W72/085 ,  H04B17/318 ,  H04L43/16 ,  H04W4/40 ,  H04W24/08 ,  H04W72/0486

Abstract: Aspects of the present disclosure implement techniques that allow a vehicle performing V2X communications to provide more accurate S-RSSI measurements and CBR calculations for use in channel selection and congestion control. Techniques may include measuring a sidelink received signal strength indicator (S-RSSI) for each of a plurality of sub-channels, determining one or more signal impairment adjustment factors based on the S-RSSI for each of the plurality of sub-channels, calculating a channel busy ratio (CBR) for the plurality of sub-channels based on the one or more signal impairment adjustment factors, and initiating communication with at least one of the plurality of sub-channels based on at least the CBR.

公开(公告)号：US20250097878A1

公开(公告)日：2025-03-20

申请号：US18467266

申请日：2023-09-14

Applicant: QUALCOMM Incorporated

Inventor： Sundervelu Palanivelu TANDALAM ,  Ahmed SADEQUE ,  Cheol Hee PARK ,  Santosh Kumar RONGALA ,  Praveen Kumar APPANI ,  Sean Vincent MASCHUE ,  Srinivasan RAJAGOPALAN

IPC: H04W64/00 ,  H04W56/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE), such as a roadside unit (RSU), located in an area of limited or no global navigation satellite system (GNSS) coverage may circulate sidelink synchronization signal (SLSS) neighbor information, such as in the form of an SLSS neighbors list (SNL). The SLSS neighbor information may include one or more of an index number, an SLSS identifier (ID), a timing source in-coverage flag, an RSU ID, a hop ID, a geographic location, a transmission synchronization offset, a synchronization source, and/or a coordinated universal time (UTC) time.