Title:
EFFICIENT UPLINK TIMING SYNCHRONIZATION FOR FIXED-LOCATION M2M TERMINALS
Document Type and Number:
WIPO Patent Application WO/2016/155529
Kind Code:
A1
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.
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Inventors:
CAO YU (CA)
JIA MING (CA)
JIA MING (CA)
Application Number:
PCT/CN2016/076893
Publication Date:
October 06, 2016
Filing Date:
March 21, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W56/00; H04W4/70
Domestic Patent References:
| WO2014196748A1 | 2014-12-11 |
Foreign References:
| US20140293853A1 | 2014-10-02 | |||
| US20140073337A1 | 2014-03-13 | |||
| US20130116002A1 | 2013-05-09 |
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