吉林大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (05): 1369-1373.

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Novel adaptive backoff algorithm in wireless Ad hoc networks

XIA Hai-lun| |ZENG Zhi-min| |DING Wei     

  1. School of Information &|Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2007-01-24 Online:2009-09-01 Published:2009-09-01

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Abstract:

    The congestion problem due to contending for the shared wireless in multihop Ad hoc networks is investigated. Then a novel ReceiverBased Adaptive Backoff (RBAB) algorithm is proposed. In this algorithm, the sender adjusts its contention window according to the feedback of receiver's congestion level, changes the nodes' channelcontending ability and packet sending rate on the whole, thus, achieves the control of the congestion problem. Simulation results show that the RBAB algorithm can remarkably increase the network saturation throughput and effectively control the network congestion in the Medium Access Control (MAC) layer.

Key words: communication, Ad hoc network, backoff algorithm, adaptive backoff, congestion control

CLC Number: 

  • TN915
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