A QoS Management Technique of Urgent Information Provision in ITS Services Using DSRC for Autonomous Base Stations

Akitoshi SHIMURA  Takeiki AIZONO  Masashi HIRAIWA  Shigeki SUGANO  

IEICE TRANSACTIONS on Information and Systems   Vol.E91-D    No.9    pp.2276-2284
Publication Date: 2008/09/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e91-d.9.2276
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems Theories and Application Deployments)
autonomous decentralized system,  community,  ITS,  mobile communication,  QoS,  DSRC,  

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A QoS management technique based on an autonomous decentralized mobility system, which is an autonomous decentralized system enhanced to provide mobile stations with information about urgent roadway situations, is proposed in this paper. This technique enables urgent messages to be flexibly and quickly transmitted to mobile stations by multiple decentralized base stations using dedicated short range communication. It also supports the easy addition of additional base stations. Each station autonomously creates information-delivery communities based on the urgency of the messages it receives through the roadside network and the distances between the senders and receivers. Each station dynamically determines the urgency of messages according to the message content and the speed of the mobile stations. Evaluation of this technique applied to the Smart Gateway system, which provides driving-assistance services to mobile stations through dedicated short-range communication, demonstrated its effectiveness and that it is suitable for actual systems.

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