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Status synchronization method and device

A state synchronization and synchronization source technology, applied in the field of communication, can solve the problems of high CPU usage and waste of bandwidth, and achieve the effect of reducing CPU usage and saving bandwidth

Active Publication Date: 2018-04-24
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The embodiment of the present application provides a state synchronization method and device to solve the problem of wasting bandwidth and CPU time in the existing network clock synchronization method when performing network clock synchronization in a system in which a slave node is connected to a single master node in the prior art. The problem of high occupancy

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Embodiment Construction

[0070] In some systems, such as PON systems, the slave node ONU is only connected to one master node OLT. At this time, when the OLT and ONU are performing time synchronization, the ONU does not need to repeatedly receive the synchronization status information sent by the OLT periodically to select Source, the present invention proposes based on this idea just.

[0071] In the embodiment of the present application, the master node obtains the synchronization state information of the synchronization source clock; after that, it judges whether the obtained synchronization state information of the synchronization source clock is updated compared with the latest synchronization state information stored locally; after determining the synchronization state information After the update occurs, the acquired synchronization status information of the synchronization source clock is sent to the slave node. Here, the master node no longer periodically sends the synchronization status infor...

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Abstract

The invention relates to the technical field of mobile communication and particularly relates to a status synchronization method and device and is used for solving the problem that in the prior art, an existing network clock synchronization method is wasted in bandwidth and high in CPU occupation rate when network clock synchronization is carried out in a system where slave nodes and a single master node are connected. The method provided by the embodiment of the invention comprises the steps that the master node acquires synchronization status information of a synchronization source clock; whether the synchronization status information acquired by the master node is updated or not relative to the locally stored newest synchronization status information is judged; and after it is determined that the synchronization status information is updated, the synchronization status information acquired by the master node is sent to the slave nodes. The bandwidths can be effectively saved, and the CPU occupation rate can be reduced.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for state synchronization. Background technique [0002] At present, various communication standards in the field of mobile communication, such as Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Time Division Long Term Evolution (TD-LTE), Code Division Multiple Access ( Code Division Multiple Access (CDMA) 2000, Long Term Evolution-Advanced (LTE-A), Multimedia Broadcast Multicast Service (MBMS), etc., all require that the air interface protocols of the base station meet the requirements of the network Only clock synchronization can work normally, and network clock synchronization includes time synchronization and frequency synchronization. [0003] Now, when the base stations adopt the above-mentioned communication system to realize network clock synchronization, each base station is installed with a Global Positioni...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W56/00
CPCH04J3/0638H04W56/001
Inventor 韩柳燕胡新天张德朝
Owner CHINA MOBILE COMM LTD RES INST