01506816

Component

Vehicle-to-Infrastructure (V2I) wireless communication plays a critical role in enabling vehicles to receive services provided by Cooperative Vehicle and Infrastructure System. In Vehicular Ad Hoc Network (VANET), these services become accessible through periodical broadcasts of WAVE (Wireless Access for Vehicular Environments) Service Advertisement (WSA) messages over the CCH (control channel) transmitted by roadside infrastructure. As suggested by the IEEE 1609.3 standard, repeating WSA more times per CCH interval could increase the probability of successful WSA reception. However, massive redundant information brought by this approach may lead to safety-critical CCH congestion and latency problems. To solve this problem, this paper proposes an approach--Adaptive Adjusting WSA Repetition Time (AART). First, the level of the current WSA-awareness and the current CCH status is determined through an algorithm. Then the time of WSA repetition has a corresponding numerical adjustment. Thus, AART helps to achieve a balance between the WSA reception rate and the CCH communication quality. Simulation results confirm that when the time of WSA repetition is adjusted through an on-demand and adaptive way, an efficient and robust WAVE advertisement procedure could be realized under various traffic situations.

This paper was sponsored by TRB committee AHB15 Intelligent Transportation Systems.

01503729

14-3469

English

15p

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; References; Tables

Infrastructure; Traffic congestion; Traffic simulation; Vehicle to infrastructure communications; Vehicle to vehicle communications; Vehicular ad hoc networks; Wireless communication systems

Vehicle infrastructure integration

Data and Information Technology; Highways; Operations and Traffic Management; I73: Traffic Control

Transportation Research Board Annual Meeting 2014 Paper #14-3469

TRIS, TRB, ATRI

Jan 27 2014 3:11PM