p-RWBO： a novel low-collision and QoS-supported MAC for wireless ad hoc networks

QoS supported MAC mechanism is a key issue for supporting QoS in wireless ad hoc networks. A new backoff algorithm, named RWBO＋BEB, was proposed previ- ously to decrease the packet collision probability significantly. In this paper, it is explored how to make RWBO＋BEB support service differentiation...

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Bibliographic Details
Published in:Science China. Information sciences 2008-09, Vol.51 (9), p.1193-1203
Main Authors: Long, KePing, Li, Yun, Zhao, WeiLiang, Wang, ChongGang, Sohraby, Kazem
Format: Article
Language:English
Subjects:
Ad hoc networks
Algorithms
Bandwidths
Collision dynamics
Computer Science
Differentiation
Information Systems and Communication Service
p-RWBO
Quality of service architectures
Wireless networks
信息冲撞
无线通信
服务分化
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Summary:QoS supported MAC mechanism is a key issue for supporting QoS in wireless ad hoc networks. A new backoff algorithm, named RWBO＋BEB, was proposed previ- ously to decrease the packet collision probability significantly. In this paper, it is explored how to make RWBO＋BEB support service differentiation in wireless ad hoc networks, and a novel proportional service differentiation algorithm, named p-RWBO, is proposed to allocate the wireless bandwidth according to the band- width ratio of each station. In p-RWBO, station n＇s walking probability （Pw,n） is selected according to its allocated bandwidth ratio. An analytical model is proposed to analyze how to choose Pw, n according to the bandwidth ratios of station n. The simulation results indicate that p-RWBO can differentiate services in terms of both bandwidth and delay.
ISSN:1009-2757
1674-733X
1862-2836
1869-1919
DOI:10.1007/s11432-008-0122-1