An efficient method of reselecting Grand Master in IEEE 802.1AS

Younghwan Jeon, Juho Lee, Sungkwon Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently, IEEE 802.3 Ethernet network is not limited to be used as the sub-network of a vehicle but also can be used as backbone network of a vehicle. Audio/Video Bridge (AVB) standard is about the Ethernet technology that can be used as a backbone network in a vehicle. AVB provides time-synchronized low latency streaming service through the Ethernet. 802.1 AS protocol in AVB can synchronize the time between different nodes through Grand Master (GM) which is selected by the Best Master Clock Algorithm (BMCA). If the synchronization message of GM is not received by another node within timeout interval, the protocol selects a new GM in the network through BMCA. This method can occur the bunching error because of consecutive exchange of messages. This paper proposes an efficient method to re-synchronize GM's time. This proposed method is to use a table which indicates a pre-defined sequence of GM to reconfigure GM. As a result, the reconfiguration procedure of GM with the sequence table can decrease generated traffic and a time when operating an existing BMCA procedure. In addition, this proposed method reduces the residence time of the bridge to prevent bunching of consecutive messages. Therefore, this paper proposes more efficient method of reselecting the GM than the BMCA.

Original languageEnglish
Title of host publicationProceedings of the 20th Asia-Pacific Conference on Communication, APCC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages303-308
Number of pages6
ISBN (Electronic)9781479964352
DOIs
StatePublished - 2015 Apr 22
Event20th Asia-Pacific Conference on Communication, APCC 2014 - Pattaya City, Thailand
Duration: 2014 Oct 12014 Oct 3

Publication series

NameProceedings of the 20th Asia-Pacific Conference on Communication, APCC 2014

Other

Other20th Asia-Pacific Conference on Communication, APCC 2014
CountryThailand
CityPattaya City
Period14/10/114/10/3

Keywords

  • BMCA
  • GM Sequence Table
  • Reconfiguration
  • Static Announce

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  • Cite this

    Jeon, Y., Lee, J., & Park, S. (2015). An efficient method of reselecting Grand Master in IEEE 802.1AS. In Proceedings of the 20th Asia-Pacific Conference on Communication, APCC 2014 (pp. 303-308). [7091652] (Proceedings of the 20th Asia-Pacific Conference on Communication, APCC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APCC.2014.7091652