公开(公告)号：US20140281037A1

公开(公告)日：2014-09-18

申请号：US14198351

申请日：2014-03-05

Applicant: Broadcom Corporation

Inventor： Eric John Spada ,  Yongbum Kim

IPC: H04L29/08

CPC classification number: H04L69/28 ,  H04J3/0641 ,  H04J3/0667

Abstract: Fault tolerant and redundant grand master clock scheme may reduce or eliminate precision time transition caused by a network link or device failure. A primary synchronization message may be sent by a primary grandmaster clock and one or more backup synchronization message may be sent by respective backup grandmaster clocks. The primary and backup grandmaster clocks may be concurrently operated. The primary and backup synchronization messages may be sent to an end station over a network. The end station may derive a local clock based on one, some, or all of the received messages. The end station may or may not distinguish between the messages based on the clock source. The end station may validate messages received from a particular clock source.

Abstract translation: 容错冗余的主主时钟方案可以减少或消除由网络链路或设备故障引起的精确时间转换。 主同步消息可以由主大师时钟发送，并且一个或多个备份同步消息可以由相应的备份主控时钟发送。 主要和备份大师时钟可以同时运行。 可以通过网络将主备份同步消息发送到终端站。 终端站可以基于一个，一些或全部接收的消息导出本地时钟。 终端站可以或可以不区分基于时钟源的消息。 终端可以验证从特定时钟源接收到的消息。

公开(公告)号：US09455905B2

公开(公告)日：2016-09-27

申请号：US14187098

申请日：2014-02-21

Applicant: Broadcom Corporation

Inventor： Patricia Ann Thaler ,  Eric John Spada

IPC: H04L12/725 ,  H04L1/00 ,  H04L12/703 ,  H04L12/771

CPC classification number: H04L45/30 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/0083 ,  H04L45/28

Abstract: Devices implement encapsulation to support link layer preemption. The device may include a encapsulation logic that encapsulates data, such as an Ethernet frame, to produce an encapsulated frame. The encapsulated frame may include an encapsulation element that indicates whether the encapsulated data includes non-preemptible data, such as Distinguished Minimum Latency Traffic (DMLT), or preemptible data. The encapsulated frame may also indicate whether the encapsulated data comprises the last fragment of a preemptible frame.

Abstract translation: 设备实现封装以支持链路层抢占。 该设备可以包括封装诸如以太网帧之类的数据以产生封装帧的封装逻辑。 封装的帧可以包括指示封装的数据是否包括非可抢占数据的封装元件，例如可分辨最小延迟业务（DMLT）或可抢占数据。 封装的帧还可以指示封装的数据是否包括可抢占帧的最后一个片段。

公开(公告)号：US20140245114A1

公开(公告)日：2014-08-28

申请号：US14187098

申请日：2014-02-21

Applicant: Broadcom Corporation

Inventor： Patricia Ann Thaler ,  Eric John Spada

IPC: H04L12/725 ,  H04L1/00

CPC classification number: H04L45/30 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/0083 ,  H04L45/28

Abstract: Devices implement encapsulation to support link layer preemption. The device may include a encapsulation logic that encapsulates data, such as an Ethernet frame, to produce an encapsulated frame. The encapsulated frame may include an encapsulation element that indicates whether the encapsulated data includes non-preemptible data, such as Distinguished Minimum Latency Traffic (DMLT), or preemptible data. The encapsulated frame may also indicate whether the encapsulated data comprises the last fragment of a preemptible frame.

Abstract translation: 设备实现封装以支持链路层抢占。 该设备可以包括封装诸如以太网帧之类的数据以产生封装帧的封装逻辑。 封装的帧可以包括指示封装的数据是否包括非可抢占数据的封装元件，例如可分辨最小延迟业务（DMLT）或可抢占数据。 封装的帧还可以指示封装的数据是否包括可抢占帧的最后一个片段。