Title: A Fair Scheme for Multi-channel Selection in Vehicular Wireless Networks
Authors: Wang, Kuo-Lung
Wang, Tsan-Pin
Tseng, Chien-Chao
資訊工程學系
Department of Computer Science
Keywords: IEEE 802.11p/1609 WAVE standards;DSRC;Multi-channel selection scheme;Vehicular wireless networks
Issue Date: 1-Dec-2013
Abstract: In recent years, the IEEE 802.11p/1609 wireless access in vehicular environments standards adopt the dedicated short-range communications multi-channel architecture for vehicular wireless networks. To utilize the multi-channel architecture, each vehicle equipped with two sets of transceivers can operate concurrently on three different channels. For example, in cluster-based multi-channel schemes, a cluster head vehicle coordinates and assigns an appropriate channel to its cluster members. However, these schemes are unsuitable for a single channel device performing on only one RF channel at a time which would waste channel resource and increase time to allocate a channel. Another approach, called LEACH-based scheme, selects channels randomly and ensures that each channel is selected once within a round in each vehicle. However, this leads to a situation that different vehicles might select the same channel in short-term duration. In this paper, we propose a multi-channel selection scheme, called minimum duration counter (MDC) scheme, which could apply to a single channel device, while utilizing the multi-channel architecture of an 802.11p/1609 network. In addition, we compare the MDC scheme with pure random (PR) and LEACH-based schemes in terms of fairness index (FI) and utilization to emphasize the fairness and to balance the traffic of multi-channel usage. Furthermore, we analyze the counter overflow probability distribution and propose solutions to the MDC scheme. Numerical results show that our scheme outperforms the PR and LEACH-based schemes in terms of multi-channel usage, traffic balancing, and fairness.
URI: http://dx.doi.org/10.1007/s11277-013-1247-0
http://hdl.handle.net/11536/23219
ISSN: 0929-6212
DOI: 10.1007/s11277-013-1247-0
Journal: WIRELESS PERSONAL COMMUNICATIONS
Volume: 73
Issue: 3
Begin Page: 1049
End Page: 1065
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