Performance Evaluation of an Enhanced GDCF for IEEE 802.11

Min Young CHUNG  Min-Su KIM  Tae-Jin LEE  Yutae LEE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B   No.10   pp.4125-4128
Publication Date: 2005/10/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.10.4125
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
IEEE 802.11,  medium access control,  collision resolution mechanism,  saturation throughput,  

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Summary: 
In this letter, we propose an enhanced gentle distributed coordination function (GDCF), which is a simple and effective collision resolution mechanism, to improve the performance of IEEE 802.11 DCF. We compare performance of the enhanced GDCF with that of the legacy DCF and the conventional GDCF via analysis and simulations. The enhanced GDCF introduces a new counter to check the number of consecutively successful transmissions, and the maximum permitted values of the counter differ for different backoff stages. The proposed GDCF is shown to have performance superior to that of the conventional GDCF for various combinations of contending stations and frame length.