公开(公告)号：US20170055235A1

公开(公告)日：2017-02-23

申请号：US14831994

申请日：2015-08-21

Applicant: QUALCOMM Incorporated

Inventor： Khosro Mohammad Rabii ,  Carlos Horacio Aldana ,  Shivakumar Balasubramanyan ,  Padam Lal Kafle ,  Fawad Shaukat ,  Vijay Naicker Subramaniam

IPC: H04W56/00 ,  H04J3/06 ,  H04W76/02

CPC classification number: H04W56/0015 ,  H04J3/0641 ,  H04J3/0667 ,  H04N21/4305 ,  H04N21/4325 ,  H04N21/43637 ,  H04W76/10

Abstract: Providing Precision Timing Protocol (PTP) timing and clock synchronization for wireless multimedia devices is disclosed. In one aspect, a primary wireless multimedia device comprising a timing synchronization control system is provided. The timing synchronization control system is configured to apply a PTP Best-Master-Clock (BMC) algorithm logic to select a master clock from among a system clock of the primary wireless multimedia device, one of one or more connected wireless multimedia devices, or one of one or more external nodes. If the timing synchronization control system selects the system clock of the primary wireless multimedia device, a clock signal of the system clock is provided to the connected wireless multimedia devices as the master clock. If the timing synchronization control system selects a connected wireless multimedia device or an external node as the master clock, the timing synchronization control system synchronizes the system clock with the master clock.

Abstract translation: 公开了为无线多媒体设备提供精确定时协议（PTP）定时和时钟同步。 在一个方面，提供了包括定时同步控制系统的主要无线多媒体设备。 定时同步控制系统被配置为应用PTP最佳主时钟（BMC）算法逻辑来从主无线多媒体设备的系统时钟，一个或多个连接的无线多媒体设备中的一个或一个或多个连接的无线多媒体设备中选择一个主时钟 的一个或多个外部节点。 如果定时同步控制系统选择主无线多媒体设备的系统时钟，则将系统时钟的时钟信号作为主时钟提供给所连接的无线多媒体设备。 如果定时同步控制系统选择连接的无线多媒体设备或外部节点作为主时钟，定时同步控制系统将系统时钟与主时钟同步。