Invention Grant
- Patent Title: Latency reduction in shared or unlicensed spectrum
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Application No.: US17228698Application Date: 2021-04-12
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Publication No.: US11611961B2Publication Date: 2023-03-21
- Inventor: Seyedkianoush Hosseini , Srinivas Yerramalli , Wanshi Chen , Jing Sun , Hao Xu , Shimman Arvind Patel
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04L1/18 ; H04L5/00 ; H04L27/00 ; H04L27/26 ; H04W72/12 ; H04W24/10 ; H04W74/08 ; H04L5/14 ; H04W8/22 ; H04W16/14 ; H04W72/0446 ; H04L1/1829 ; H04L1/1867 ; H04W72/23

Abstract:
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit uplink (UL) messages in unlicensed spectrum with a reduced UL timing delay. The UL timing delay may be reduced by using a shortened transmission time interval (TTI) (e.g., a TTI that is reduced in duration relative to other TTIs in the system or in a legacy system) or by reducing the number of TTIs between a grant and the corresponding UL message. The reduced UL timing delay may decrease the likelihood that the UE will wait for a subsequent transmit opportunity (TxOp) to transmit the UL message. In some cases, the reduced UL timing delay corresponds to a reduced hybrid automatic repeat request (HARM) processing delay. In some cases, a time difference (e.g., measured in TTIs) between a measurement reference TTI a corresponding channel state information (CSI) report may also be reduced.
Public/Granted literature
- US20210258953A1 LATENCY REDUCTION IN SHARED OR UNLICENSED SPECTRUM Public/Granted day:2021-08-19
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