Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (3): 127-131.doi: 10.13190/jbupt.201103.127.362

• Reports • Previous Articles    

Optimal Throughput Analysis of Wireless MultiHop Ad hoc Network

  

  • Received:2010-04-23 Revised:2010-12-11 Online:2011-06-28 Published:2011-03-29
  • Contact: su jingfang E-mail:suejingfang@foxmail.com

Abstract:

A carrier sensing multiple access collision avoidance (CSMA/CA) and hidden node effect integrated system modeling method is proposed to study the optimum sustained application traffic of multihop Ad hoc network. The coexistence of CSMA scheme and hidden node effect in multihop environment makes the nodes competition for channel occupation more complicated. Firstly, we set up the optimum throughput model of the system by analyzing the modes competing action for accessing the channel. Then we deduce the mathematical expression of system optimum throughput under both CSMA effect and hidden node effect. Finally, numerical results are given based 802.11 b/g media access control mechanism in both analysis and simulation. Simulation of different chain hops and different packet size verifies that the modeling method and the model expression could accurately evaluate the traffic supporting situation in multihop Ad hoc networks.

Key words: carrier sensing multiple access, hidden node, Ad hoc, multihop, optimal throughput