CLOCK ADJUSTMENT AND CLOCK DEVIATION CALCULATION METHOD, DEVICE AND SYSTEM

Title:

CLOCK ADJUSTMENT AND CLOCK DEVIATION CALCULATION METHOD, DEVICE AND SYSTEM

Document Type and Number:

WIPO Patent Application WO/2018/210281

Kind Code:

A1

Abstract:

The embodiments of the present application relate to the technical field of communications, and provided thereby are a clock adjustment and clock deviation calculation method, device and system, which may improve the synchronization accuracy between a terminal and an access network device. The specific solution is: a terminal sending a first signal to an access network device; receiving a first time value and signal time offset sent by the access network device, the first time value indicating the moment the access network device receives the first signal, and the signal time offset comprising a residual time offset Δt, the absolute value of Δt being less than the timing advance (TA) adjustment granularity; calculating a clock deviation according to the first time value, the signal time offset and a second time value, the second time value indicating the moment when the terminal sends the first signal, and the clock deviation being the time difference between a first clock configured in the terminal and a second clock configured in the access network device; and adjusting the first clock according to the clock deviation. The embodiments of the present application are used in the synchronization of a clock.

Inventors:

ZHANG YANFEI (CN)
WEN RONGHUI (CN)
GAO FENG (CN)

Application Number:

PCT/CN2018/087173

Publication Date:

November 22, 2018

Filing Date:

May 16, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

H04J3/06

Foreign References:

CN106656386A	2017-05-10
CN101841509A	2010-09-22
CN102821457A	2012-12-12
CN104160661A	2014-11-19
CN103188788A	2013-07-03