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Method and system for implementation of time auto synchronization

An automatic synchronization and time synchronization technology, applied in the field of mobile communication, can solve the problems of time asynchrony, inability to establish packet data services, message discarding, etc., to achieve the effect of time synchronization

Inactive Publication Date: 2008-06-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when using this method, if the time of PCF and PDSN is not synchronized due to NTP Server configuration errors, the messages between PCF and PDSN will be discarded to prevent replay attacks, resulting in the failure to establish packet data services

Method used

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  • Method and system for implementation of time auto synchronization
  • Method and system for implementation of time auto synchronization

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0019] A system for realizing automatic time synchronization of the present invention such as figure 2 As shown, the system includes a sending end PCF1 and a receiving end PDSN2, and the sending end PCF1 is connected to the receiving end PDSN2. The sending end PCF1 further includes a message checking unit 11, a time synchronization unit 12 and a connection processing unit 13, wherein the connection processing unit 13 is connected with the message checking unit 11 and the time synchronization unit 12 respectively; the receiving end PDSN2 further includes a connection processing unit 21, a message checking The unit 22 and the time synchronization judging unit 23, wherein the connection processing unit 21 is connected to the message checking unit 22 and the time synchronization judging unit 23 respectively.

[0020] The connection processing uni...

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Abstract

The invention discloses a method for realizing automatic time synchronization. Firstly, a sending end sends connection establishing request information which contains the information sending time. Secondly, a receiving end judges whether the time of the sending end and the time of the receiving end are synchronous according to the information sending time, when the time of the sending end and the time of the receiving end are not synchronous, the failed response information is returned to the sending end. Finally, the sending end synchronizes the information sending time with the time of the receiving end according to the receiving end time carried in the failed response information. The invention also discloses a system which can realize automatic time synchronization. The system includes a sending end and a receiving end. The sending end includes a connection processing unit and a time synchronizing unit; the receiving end includes a connection processing unit and a time synchronization judging unit. The invention realizes the automatic time synchronization of the sending end and the receiving end, and does not influence the data operation request of the user when the time is not synchronous.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and system for realizing automatic time synchronization. Background technique [0002] CDMA (Code Division Multiple Access, Code Division Multiple Access) 2000 is the wireless access technology of the third generation mobile communication, and 3GPP2 (3rd Generation Partnership Project 2, CDMA2000 standardization organization) is responsible for formulating standards. Compared with the second generation wireless communication Technology, the ability to support packet data services is greatly enhanced, and it can provide high-speed packet data service access. [0003] In the CDMA2000 network structure, PCF (Packet Control Function, packet control function) and PDSN (Packet Data Serving Node, packet data service node) constitute a packet domain, through which the PDSN can access the Internet and provide packet data services to users. The interface between the ...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L7/00H04J3/06H04L12/28H04L12/56H04L29/06H04J13/00H04L1/16
Inventor 刘清顺
Owner HUAWEI TECH CO LTD
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