Invention Grant
- Patent Title: Efficient uplink timing synchronization for fixed-location M2m terminals
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Application No.: US16181824Application Date: 2018-11-06
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Publication No.: US10736064B2Publication Date: 2020-08-04
- Inventor: Yu Cao , Ming Jia
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Slater Matsil, LLP
- Main IPC: H04W56/00
- IPC: H04W56/00 ; H04W4/70

Abstract:
A method for determining synchronization of uplink timing in a machine type communication (MTC) system comprising a machine type communication device (MTCD) and a network element is disclosed that takes advantage of the MTCD being at a fixed location relative to the network element. The method includes receiving at the MTCD an uplink timing adjustment value from the network element and storing the uplink timing adjustment value at the MTCD. The MTCD then uses the stored uplink timing adjustment value from a previous uplink transmission for synchronizing uplink timing for a subsequent uplink transmission from the MTCD to the network element even following a period of inactivity of the MTCD, or expiration of any existing maximum uplink timing alignment period permitted for use of the timing adjustment value by the MTCD, or MTCD clock drift.
Public/Granted literature
- US20190075532A1 Efficient Uplink Timing Synchronization for Fixed-Location M2m Terminals Public/Granted day:2019-03-07
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