Invention Application
- Patent Title: SELECTIVE LISTENING FOR A TRACKING REFERENCE SIGNAL (TRS) DURING CONNECTED MODE DISCONTINUOUS RECEPTION (CDRX)
-
Application No.: PCT/US2021/046757Application Date: 2021-08-19
-
Publication No.: WO2022046523A1Publication Date: 2022-03-03
- Inventor: VAZE, Chinmay Shankar , GOROKHOV, Alexei Yurievitch , WU, Yongle , MINERO, Paolo , SANKAR, Hari , MANTRAVADI, Ashok , CHALLA, Raghu Narayan , SANTHANAM, Arvind Vardarajan
- Applicant: QUALCOMM INCORPORATED
- Applicant Address: ATTN: International IP Administration
- Assignee: QUALCOMM INCORPORATED
- Current Assignee: QUALCOMM INCORPORATED
- Current Assignee Address: ATTN: International IP Administration
- Agency: SAMPSON, Roger S. et al.
- Priority: US17/405,824 2021-08-18
- Main IPC: H04L5/00
- IPC: H04L5/00 ; H04L27/00 ; H04L27/26 ; H04W52/02
Abstract:
A device may selectively listen for a tracking reference signal (TRS) during connected mode discontinuous reception (CDRx) based on whether the device is to switch between repeaters of a base station (such as during travel). A device may determine whether the device is in a high speed train (HST) scenario (such as based on a difference in frequency errors generated using a synchronization signal block (SSB) and generated using a TRS, based on a trajectory of a frequency error or a frequency error difference over time, based on instantaneous frequency errors, etc.). When the device is in a HST scenario, the device listens for a TRS during CDRx, and the device generates a frequency error using the TRS. When the device is not in a HST scenario, the device prevents listening for a TRS during CDRx (with a SSB received during CDRx to be used to generate a frequency error).
Information query