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Title:
D2D SYNCHRONIZATION METHOD, USER EQUIPMENT AND SERVING CELL
Document Type and Number:
WIPO Patent Application WO/2017/024469
Kind Code:
A1
Abstract:
Disclosed are a D2D synchronization method, a user equipment and a serving cell. The method comprises: by means of acquiring synchronization control information about a serving cell, a user equipment acquiring an identifier of a first synchronization signal, which is sent by a first synchronization source and is searched on a second transmission carrier frequency, and the signal quality of the first synchronization source; determining whether to start the sending of the synchronization signal according to the identifier of the first synchronization signal, the signal quality of the first synchronization source and the synchronization control information; and in the case of determining to start the sending of the synchronization signal, the user equipment sending a second synchronization signal on a third transmission carrier frequency, a frequency point of which is different from that of a carrier frequency where the serving cell is located, wherein the second synchronization signal is used for instructing any user equipment on the third transmission carrier frequency to perform synchronization according to the synchronization signal sent by the user equipment, so that the problem of synchronization between different user equipments in a multi-carrier frequency transmission scenario can be solved.

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Inventors:
LI MINGCHAO (CN)
HAN GUANGLIN (CN)
CAO ZHENZHEN (CN)
LIU DEPING (CN)
Application Number:
PCT/CN2015/086503
Publication Date:
February 16, 2017
Filing Date:
August 10, 2015
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W56/00
Domestic Patent References:
WO2015111908A12015-07-30
Foreign References:
CN104412676A2015-03-11
CN104812058A2015-07-29
Other References:
See also references of EP 3310101A4
Attorney, Agent or Firm:
GUANGZHOU SCIHEAD PATENT AGENT CO., LTD. (CN)
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