Dissertation > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer network architecture and design

Network Clock Synchronization Based on Delay and Ringed Topology

Author LinRongRong
Tutor DingWei
School Southeast University
Course Computer System Architecture
Keywords Clock synchronization Ring topology One-way delay Relative clock offset
CLC TP393.02
Type Master's thesis
Year 2006
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In order to evaluate the network end-to-end system performance , network one-way delay measurement of performance parameters is essential . However, due to the host of the network clock is not synchronized , the one-way delay the measure of value is difficult to accurately measure . To this end , the paper studies and designs to achieve a network host -oriented one-way delay measurement multi-master clock synchronization system , the system is based on the model of the ring topology . Ie : when the stamp on each host in a logical ring topology packet data measurement and statistics , and clock synchronization model , and ring topology further collaboration with node synchronization . First , the system study node synchronization model reference Paxson, Moon and Li Zhang proposed clock synchronization method based on the improved design proposed AV synchronization method , to provide users with accurate high-precision synchronization of timestamps . Secondly , based on the research base of the existing tree, star , or P2P the synchronous mesh topology system proposed the the cyclic synchronization topology synchronization system design . The system after the establishment of the synchronous model in the junction point between the use of logic annular synchronization topology , the computation of the synchronizing clock ring on the accumulated error , the synergistic correction of the synchronization model for each node in the ring , in order to further improve the synchronization precision . Finally, the system provides dynamic ring logical topology establishment , release and self-maintenance . Shorter convergence time to establish independent , lifted its ring logical topology . Also provide self- maintenance capabilities of the synchronization topology ring , and that the subsequent node can join the established synchronization ring node on the ring initiative to evacuate synchronizer ring , synchronizer rings in synchronization If the judging ring on the failed node will the synchronization node passive evacuation synchronizer ring current . In summary , the system can be in the same logical ring topology host node clock synchronization , this value to provide an accurate time stamp data for measuring the network each host one-way delay .

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