Invention Grant
- Patent Title: Time synchronization architecture in a network device
- Patent Title (中): 网络设备中的时间同步架构
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Application No.: US14147025Application Date: 2014-01-03
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Publication No.: US09306693B2Publication Date: 2016-04-05
- Inventor: Shr-Jie Tzeng
- Applicant: BROADCOM CORPORATION
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McDermott Will & Emery LLP
- Main IPC: H04J3/06
- IPC: H04J3/06 ; H04L12/26 ; H04L1/00

Abstract:
A method of generating timestamp information irrespective of a packet format include generating an egress timestamp corresponding to a time at which a first egress packet associated with a synchronization event is transmitted to a network medium; storing the egress timestamp in a memory based on an egress identifier; and transmitting a second egress packet associated with the synchronization event with the stored egress timestamp being included in the transmitted second egress packet for timing synchronization in the network medium. The method also includes receiving an incoming packet from the network medium; generating an ingress timestamp corresponding to a time at which the incoming packet is received; replacing an error detection field included in the incoming packet with an error detection tag; inserting the ingress timestamp into the error detection tag; and providing the incoming packet with the ingress timestamp to a processor for synchronization of a local clock.
Public/Granted literature
- US20150139251A1 TIME SYNCHRONIZATION ARCHITECTURE IN A NETWORK DEVICE Public/Granted day:2015-05-21
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