Non-saturated Throughput Analysis of IEEE 802.11 Ad Hoc Networks

Changchun XU  Zongkai YANG  

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D   No.5   pp.1676-1678
Publication Date: 2006/05/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.5.1676
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Challenges in Ad-hoc and Multi-hop Wireless Communications)
IEEE 802.11,  ad hoc networks,  non-saturated throughput,  Markov chain,  

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This letter presents a simple but accurate analytical model to evaluate the throughput of IEEE 802.11 distributed coordination function in non-saturated conditions. The influence of offered load on the throughput of both basic and RTS/CTS access mechanisms are analyzed and compared. It's shown that basic access scheme can achieve the same maximal throughput as that of RTS/CTS mechanism in non-saturated conditions while the latter is robust to the number of contending stations compared to basic mechanism. The analytical results are validated by extensive simulations.