一种时钟同步的方法及设备技术

本发明专利技术实施例公开了一种时钟同步的方法及设备，涉及通信技术领域，可以解决由于AP发送给STA的同步帧中携带信息较大，而WUR醒来窗口的时长有限，导致该同步帧无法正常传输的问题。具体方案为：AP每隔第一时间向STA发一次至少一个WUR帧，至少一个WUR帧中的每个WUR帧中包含帧类型信息，帧类型信息用于指示该WUR帧为同步帧，第一时间小于临界时间、且第一时间大于WUR醒来窗口的间隔时间，临界时间为STA和AP发生时钟漂移使WUR醒来窗口与AP预计的所述STA的WUR醒来窗口完全错开所需的时间；AP在发送至少一个WUR帧时，将AP的TSF时钟序列设置为第一预定义值。本发明专利技术用于AP和STA进行时钟同步的过程中。

A Clock Synchronization Method and Equipment

The embodiment of the present invention discloses a method and device for clock synchronization, which relates to the field of communication technology. It can solve the problem that the synchronization frame transmitted by AP to STA can not be transmitted normally due to the large information carried in the synchronization frame and the limited time of the WUR wake-up window. Specific scheme is as follows: AP sends at least one WUR frame to STA every first time, and each WUR frame in at least one WUR frame contains frame type information. Frame type information is used to indicate that the WUR frame is a synchronous frame, the first time is less than the critical time, and the first time is larger than the interval time of WUR wake-up window. The critical time is the clock drift between STA and AP to make WUR wake-up window and AP predicted. The time required for the WUR wake-up window of the STA to be completely staggered; when the AP sends at least one WUR frame, the TSF clock sequence of the AP is set to the first predefined value. The invention is used in the process of clock synchronization between AP and STA.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。

【技术特征摘要】
【国外来华专利技术】2016.09....

【专利技术属性】
技术研发人员：杜振国，丁志明，方平，杨云松，
申请(专利权)人：华为技术有限公司，
类型：发明
国别省市：广东,44