A two-step backoff scheme for improving the performance of the IEEE 802.11 distributed coordination function

This paper describes the binary exponential backoff mechanism of 802.11 distributed coordination function (DCF), and introduces some methods of modifying the backoff scheme. Then a novel backoff scheme, called Two-step Backoff scheme, is presented and illustrated. The simulation process in OPNET environment has been described also. At last, the analysis and simulation results show that the Two-step backoff scheme can enhance the performance of the IEEE 802.11 DCF.

This paper describes the binary exponential backoff mechanism of 802.11 distributed coordination function (DCF), and introduces some methods of modifying the backoff scheme. Then a novel backoff scheme, called Two-step Backoff scheme, is presented and illustrated. The simulation process in OPNET environment has been described also. At last, the analysis and simulation results show that the Two-step backoff scheme can enhance the performance of the IEEE 802.11 DCF.

zhangdi于2010-03-29批量导入

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Natl Nat Sci Fdn China.; K C Wong Educ Fdn Hong Kong.; IEEE Circuits & Syst Soc.; IEEE Commun Soc Beijing Chapter.; Beijing Assoc Sci & Technol.; Beijing Univ Posts & Telecommun.; IEICE Japan.; ECTI Thailand.

Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China

Natl Nat Sci Fdn China.; K C Wong Educ Fdn Hong Kong.; IEEE Circuits & Syst Soc.; IEEE Commun Soc Beijing Chapter.; Beijing Assoc Sci & Technol.; Beijing Univ Posts & Telecommun.; IEICE Japan.; ECTI Thailand.