Method for realizing sub-microsecond synchronization accuracy based on PTP (Precision Time Protocol)
A PTP protocol, synchronization precision technology, applied in the field of communication, can solve the problem of not being able to achieve synchronization effect and price cost at the same time, and achieve the effect of good openness and scalability, easy implementation and low cost
Inactive Publication Date: 2011-06-15
GZH BEIDOU TECH GRP
View PDF4 Cites 57 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The technical problem to be solved by the present invention is: how to overcome the problem that the synchronization effect and price cost c
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
The invention relates to a method for realizing sub-microsecond synchronization accuracy based on a PTP (Precision Time Protocol), belonging to the technical field of communication; in order to obtain high-accuracy synchronization efficiency and save hardware investment cost, the method comprises the following steps: before a master time sends synchronization messages, synchronizing a clock and a clock source of an Ethernet transceiver; obtaining average path delay of links by a delay request information packet delay measuring mechanism or measuring a waiting delay information packet delay measuring mechanism; and performing asynchronous correction on the links so as to realize sub-microsecond synchronization accuracy. In the method, the DP83640 Ethernet transceiver is adopted, network message time stamp can be exactly obtained, the PTP protocol on an AT91RM9200 platform is realized, and sub-microsecond synchronization accuracy can be realized. Via test, the synchronization accuracy can be up to 100ns; and the whole system is low in cost, excellent in openness and expandability, and easy to implement.
Description
Method of Realizing Sub-microsecond Synchronization Accuracy Based on PTP Protocol technical field The invention relates to the field of communication technology, in particular to a method for realizing sub-microsecond synchronization accuracy based on the PTP protocol. Background technique IP is the development trend of future network services. Ethernet has become the main development direction of IP-based bearer network due to its superior cost performance, wide application and perfect product support. When deploying carrier-grade Ethernet, how to solve the problem of clock synchronization is an aspect to be considered. At present, there are two aspects to the synchronization requirements of the packet network: 1. The packet network needs to be able to carry TDM services and provide a clock recovery mechanism for TDM services, so that TDM services still meet certain performance indicators after passing through the packet network; 2. The packet network It needs to be abl...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more IPC IPC(8): H04L7/00H04L29/06
Inventor 杜光耀王宝峰
Owner GZH BEIDOU TECH GRP
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap