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Clock synchronization method and device as well as cascaded base station system

A technology for clock synchronization and clock synchronization information, applied in the directions of synchronization devices, wireless communications, electrical components, etc., can solve problems such as imperfect base station clock synchronization solutions, and achieve the effect of changing network topology, increasing network load, and saving costs

Inactive Publication Date: 2016-06-15
ZTE CORP
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Problems solved by technology

[0003] The present invention provides a clock synchronization method, device and cascaded base station system to solve the problem of imperfect clock synchronization schemes of existing base stations

Method used

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  • Clock synchronization method and device as well as cascaded base station system
  • Clock synchronization method and device as well as cascaded base station system
  • Clock synchronization method and device as well as cascaded base station system

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Embodiment Construction

[0025] In order to improve the clock synchronization scheme of the existing base stations, avoid assuming GPS at each site, save costs, and simplify the network topology, the present invention provides a new technical solution, in which a base station (hereinafter collectively referred to as the first type of base station) is clocked from an external clock The source obtains the first clock synchronization information, adjusts the local clock according to the first clock synchronization information, and transmits the second clock synchronization information to other base stations (other base stations are established with the first type of base station to be able to transmit the second clock synchronization information The base station of the communication link, such as the base station that has an association relationship or cascade relationship with the first type of base station, hereinafter collectively referred to as the second type of base station), the second type of base ...

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Abstract

The invention discloses a clock synchronization method and device as well as a cascaded base station system. A first-type base station obtains first clock synchronization information from an external clock source; a local clock is adjusted according to the first clock synchronization information, and second clock synchronization information is transmitted to another base station in a preset manner, wherein the second clock synchronization information comprises the first clock synchronization information or is generated according to the first clock synchronization information. A second-type base station obtains second clock synchronization information from at least one external base station; second clock synchronization information as a clock reference is determined from each second clock synchronization information according to a preset manner; the local clock is adjusted according to the second clock synchronization information as the clock reference. By adopting the technical scheme provided by the invention, the clock synchronization information is transmitted depending on links among base stations, so that sharing of the clock synchronization information among the base stations is achieved, and clock synchronization of multiple base stations is implemented finally; compared with the prior art, the invention has the advantage that a GPS does not need to be mounted on each site, so that the costs are reduced.

Description

technical field [0001] The present invention relates to the field of electronic equipment, in particular to a clock synchronization method, device and cascaded base station system. Background technique [0002] Wireless communication base stations, especially wireless devices operating in time-division mode, need reliable, stable, and synchronous clocks to ensure the continuity of terminal devices switching services between different base stations. For example, CDMA2000 (CodeDivisionMultipleAccess2000), TD-SCDMA (TimeDivision-SynchronousCodeDivisionMultipleAccess) and LTE (LongTermEvolution) all require phase synchronization or frame number synchronization. The traditional base station cascading timing scheme is to use satellite clock sources, for example, each base station tracks the GPS (Global Positioning System) satellite signal to realize the synchronization of the whole network; the disadvantage is that because the GPS antenna and the receiver are connected by radio fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/00
Inventor 于鹏伟
Owner ZTE CORP
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