- Patent Title: Channel state information reference signal for wideband operation
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Application No.: US17662665Application Date: 2022-05-10
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Publication No.: US11742920B2Publication Date: 2023-08-29
- Inventor: Jing Sun , Ananta Narayanan Thyagarajan , Kapil Bhattad , Xiaoxia Zhang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Harrity & Harrity, LLP\Qualcomm
- Priority: IN 1941028335 2019.07.15
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04B7/06 ; H04L1/00 ; H04L5/00 ; H04W74/08

Abstract:
This disclosure provides systems, methods, and apparatuses for determining whether a channel state information reference signal (CSI-RS) is to be transmitted, and a configuration for transmission of the CSI-RS on a wideband based on an outcome of a listen-before-talk (LBT) operation in multiple sub-bands of the wideband. In one aspect, a base station may transmit sub-band usage information indicating sub-band availability before the CSI-RS, thereby allowing a user equipment (UE) to determine whether the CSI-RS will be transmitted and, if so, on which sub-bands the CSI-RS will be transmitted. Furthermore, rate matching configurations are provided based on whether sub-band usage has been received, based on which sub-bands are available. Still further, power configurations and resource element selection criteria are provided for wideband CSI-RS and CSI feedback.
Public/Granted literature
- US20220337299A1 CHANNEL STATE INFORMATION REFERENCE SIGNAL FOR WIDEBAND OPERATION Public/Granted day:2022-10-20
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