Invention Grant
- Patent Title: Quasi-colocation indication after downlink transmission
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Application No.: US17208349Application Date: 2021-03-22
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Publication No.: US11722278B2Publication Date: 2023-08-08
- Inventor: Mostafa Khoshnevisan , Xiaoxia Zhang , Tao Luo , Peter Gaal , Le Liu , Wanshi Chen , Alberto Rico Alvarino , Juan Montojo
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM INCORPORATED
- Current Assignee: QUALCOMM INCORPORATED
- Current Assignee Address: US CA San Diego
- Agency: Norton Rose Fulbright US LLP
- Agent Dang M. Vo
- Main IPC: H04L5/00
- IPC: H04L5/00 ; H04W74/08 ; H04W72/0446 ; H04W72/23

Abstract:
Quasi-colocation (QCL) indication is discussed after downlink transmission. In the management of multiple transmission-reception point (TRP) downlink transmissions, a second indication of a QCL assumption for a particular downlink transmission may be transmitted to receiving user equipment (UEs) after transmission of the downlink transmission. Once a TRP passes a listen before talk (LBT) procedure in a first time interval, it may send a first downlink control information (DCI) with indication of a first QCL assumption for the transmission in the first time interval. The TRP then transmits the downlink transmission intended for part of the multi-TRP downlink transmission. Upon receiving an indication that another of the TRPs was unsuccessful in its part of the multi-TRP transmission, the TRP may transmit a second DCI in a subsequent time interval with adjustments to the QCL assumption for the UEs to use in processing the downlink transmission from the first time interval.
Public/Granted literature
- US20210306125A1 QUASI-COLOCATION INDICATION AFTER DOWNLINK TRANSMISSION Public/Granted day:2021-09-30
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