Time synchronization method, time synchronization device and time synchronization system

A technology of time synchronization and server time, which is applied in the field of communication, can solve problems affecting user experience, large time differences between client and BCAST server, and users cannot watch programs at the correct time, so as to enhance user experience

Inactive Publication Date: 2010-02-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For a system that does not implement time synchronization, such as an asynchronous Wideband Code Division Multiple Access (WCDMA) system, the time difference between the client and the BCAST server is relatively large, and the client accesses the program through the BCAST service guide. Make users unable to watch programs at the correct time, thereby affecting user experience

Method used

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  • Time synchronization method, time synchronization device and time synchronization system
  • Time synchronization method, time synchronization device and time synchronization system
  • Time synchronization method, time synchronization device and time synchronization system

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Embodiment 1

[0038] In this embodiment, the client acquires clock information and realizes time synchronization with the server according to the above clock information, so that the time of the client and the time of the server can be synchronized.

[0039] A detailed description will be given below in conjunction with the accompanying drawings.

[0040] Step 101: the client obtains clock information;

[0041] The client can obtain clock information through the local underlying clock, or obtain clock information through the server.

[0042] Obtaining the clock information by using the local underlying clock may be that the client acquires a signaling message including the clock information in the mobile communication network.

[0043] Obtaining the clock information through the server may be that the client sends a request to the server, and the client obtains the clock information sent by the server according to the request; it may also obtain the clock information regularly sent by the ...

Embodiment 2

[0052] This embodiment provides a solution for implementing time synchronization between the client and the server when the client initiates a service guide acquisition request or a service guide update request, and the server sends clock information together with the service guide to the client. The basic idea is that in an interactive service guide, when the client initiates a service guide acquisition request or a service guide update request to the server, the server sends the clock information together with the service guide to the client.

[0053] see figure 2 ,Specific steps are as follows:

[0054] Step 201: the client sends a service guide acquisition request or a service guide update request to the server;

[0055]The client can use the request message to initiate a request. The following is an example of the request message format:

[0056]

[0057] The above request message is composed of message header and message body. The header field includes the service ...

Embodiment 3

[0109] This embodiment provides an implementation solution for sending clock information to a client through a cell broadcast system. The basic idea is that the server periodically or regularly sends clock information to the client, and the client performs synchronization after receiving the clock information. The feature of this method is that there is no need to distinguish clients, and all clients within the cell range can receive clock information.

[0110] see image 3 , the specific process is as follows:

[0111] Step 301: the server regularly forwards the clock information to the cell broadcast system;

[0112] The server usually forwards the time information to the cell broadcast system periodically.

[0113] Step 302: the cell broadcast system encapsulates the clock information in a cell broadcast message for broadcast;

[0114] If the clock information is too large, the clock information can be compressed before encapsulation, or the clock message c...

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PUM

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Abstract

The embodiment of the invention discloses a time synchronization method, a time synchronization device and a time synchronization system. The time synchronization method comprises the following stepsthat: a client acquires clock information; and the client realizes time synchronization with a server according to the clock information. The client comprises a clock information acquisition unit anda clock management unit, wherein the clock information acquisition unit is used for acquiring the clock information, and the clock management unit is used for realizing the time synchronization with the server according to the clock information acquired by the clock information acquisition unit. In the embodiment of the invention, the client acquires the clock information and realizes the time synchronization with the server according to the clock information, so the time of the client and the time of the server can be kept synchronous so as to keep the time of a user and the time of the server synchronous and further strengthen the experience of the user.

Description

technical field [0001] The present invention relates to the communication field, in particular to a time synchronization method, device and system. Background technique [0002] Mobile Broadcast Service (BCAST) is a concept of mobile broadband digital broadcasting service proposed by the Open Mobile Alliance. In broadcasting, it includes traditional one-to-many broadcasting and multipoint transmission. It is dedicated to business Inventions such as discovery, electronic programming, service guidance, billing, content protection, etc., formulate specific service engines, and ensure that they are independent of the bearer layer. The whole BCAST system consists of functional part, protocol part and bearer network part. [0003] According to the standard of the Open Mobile Alliance, the mobile video broadcasting service must provide users with Service Guide (Service Guide, SG) information. The service guide provides users with broadcast content information, including channel n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04L29/06H04H60/72
CPCH04J3/0667
Inventor 张惠萍杨健陈国乔
Owner HUAWEI TECH CO LTD
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