Distributed Periodic Access Scheme (DPAS) for the periodic safety messages in the IEEE 802.11p WAVE

Kwang Jin Song, Chan Hang Lee, Min Su Woo, Sung Gi Min

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

14 Citations (Scopus)

Abstract

In WAVE applications, the safety information of neighboring vehicles must be collected as quickly and efficiently as possible. Safety applications broadcast their safety information periodically, but the delivery of the broadcast messages in IEEE 802.11p is unreliable. As the control channel has to share the Sync Interval (SI) with the service channels, access to the control channel by the safety messages is delayed during the Service CHannel Interval(SCHI). All safety messages generated during SCHI are rush to access as soon as the Control CHannel Interval (CCHI) starts. It causes the flash crowd problem for the safety applications. Safety messages, which are generated periodically and their periods overlap with SCHI, always face the latter problem; it causes unfairness among the safety messages. In this paper, a Distributed Periodic Access Scheme (DPAS) is proposed to solve the problem. DPAS uses a hashing function to distribute the access time of the safety messages into CCHI instead of SI. The simulation results show that DPAS drastically reduces the collision of the safety messages in a crowded environment and that choosing a hashing function is very important to reduce the collision in a crowded environment.

Original languageEnglish
Title of host publicationProceedings - 2011 3rd International Conference on Communications and Mobile Computing, CMC 2011
Pages465-468
Number of pages4
DOIs
Publication statusPublished - 2011
Event2011 3rd International Conference on Communications and Mobile Computing, CMC 2011 - Qingdao, China
Duration: 2011 Apr 182011 Apr 20

Publication series

NameProceedings - 2011 3rd International Conference on Communications and Mobile Computing, CMC 2011

Other

Other2011 3rd International Conference on Communications and Mobile Computing, CMC 2011
CountryChina
CityQingdao
Period11/4/1811/4/20

Keywords

  • Flash Crowd Problem
  • IEEE 1609.4
  • IEEE 802.11p
  • Safety Application
  • VANET
  • WAVE

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Networks and Communications

Cite this

Song, K. J., Lee, C. H., Woo, M. S., & Min, S. G. (2011). Distributed Periodic Access Scheme (DPAS) for the periodic safety messages in the IEEE 802.11p WAVE. In Proceedings - 2011 3rd International Conference on Communications and Mobile Computing, CMC 2011 (pp. 465-468). [5931296] (Proceedings - 2011 3rd International Conference on Communications and Mobile Computing, CMC 2011). https://doi.org/10.1109/CMC.2011.67