Synchronization method and synchronization device of small cell
A technology of synchronizing device and small station, applied in the direction of synchronizing device, electrical components, wireless communication, etc., can solve the problems of low clock synchronization accuracy and mutual interference between adjacent small stations, so as to avoid the phenomenon of clock looping, ensure the accuracy, Avoid the effects of less accurate clock synchronization
Active Publication Date: 2018-04-03
CHINA MOBILE COMM LTD RES INST +1
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[0007] The embodiment of the present invention provides a small station synchronization method and a synchronization device, which are used to solve the problem of low clock synchronization accuracy in the multi-hop scenario of the small station synchronization method in the prior art, and to solve the problem of low clock synchronization accuracy in the multi-clock ring scenario. There is a problem of mutual interference between adjacent small stations in different clock rings
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[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0056] In order to solve the problem of low clock synchronization accuracy in the multi-hop scenario of the small cell synchronization method in the prior art, and the mutual interference between adjacent small cells in different clock rings in the multi-clock ring scenario, this paper In the embodiment of the invention, the first small station will preferentially select the air interface signal transmitted by the base station of the specified t...
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The invention discloses a synchronization method and synchronization device of a small cell to improve the accuracy of clock synchronization and reduce the interference between small cells. The methodincludes the steps of a first small cell determining a base station type of a transmitting base station of each air interface signal; based on the base station type of the transmitting base station of each air interface signal, when determining the presence of base stations of a specified type in the transmitting base stations of the air interface signals, selecting, from all the base stations ofthe specified type, a base station of the specified type as a clock synchronization base station; when determining that no base station of the specified type is present in the transmitting base stations of the air interface signals, after determining the presence of second small cells in the transmitting base stations of the air interface signals, selecting, from all the second small cells, a second small cell as a clock synchronization base station; and using the air interface signal transmitted by the clock synchronization base station as a clock synchronization signal for clock synchronization. In this way, the clock synchronization is performed according to the air interface signal transmitted by the specified type of base station, the accuracy of clock synchronization is ensured, andthe clock synchronization requirements of the small cell are satisfied.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a synchronization method and a synchronization device of a small station. Background technique [0002] In the Time Division Long Term Evolution (TD-LTE) system, a small cell (Small Cell), such as: an integrated fly station / femtocell, an integrated Picocell, etc., is a A low-cost, miniaturized, low-power, low-power cellular base station, mainly used in indoor application scenarios such as homes, small office areas, and shop areas. In practical applications, the small station can establish a connection with the core network and the network management system based on the backhaul mode based on the Internet Protocol (IP) based on the operator's own transmission network or a third-party transmission network. [0003] Generally, the outdoor macro station can implement clock synchronization through a Global Navigation Satellite System (GNSS) synchronization meth...
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IPC IPC(8): H04W56/00
CPCH04W56/001H04W56/0015
Inventor 闫渊王东杜木果
Owner CHINA MOBILE COMM LTD RES INST