JICCE (한국정보통신학회)
Current Result Document :
| 한글제목(Korean Title) |
The Modified Backoff Algorithm to reduce the number of collisions in the IEEE 802.11 Networks |
| 영문제목(English Title) |
The Modified Backoff Algorithm to reduce the number of collisions in the IEEE 802.11 Networks |
| 저자(Author) |
Jaehyun Nam
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| 원문수록처(Citation) |
VOL 06 NO. 02 PP. 0228 ~ 0232 (2008. 06) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
In recent years, wireless ad hoc networks have become increasingly popular in both military and civilian applications due to their capability of building networks without the need for a pre-existing infrastructure. Recently, IEEE 802.11 Task Group e has been working on a new mechanism, the Enhanced Distributed Coordination Function (EDCF), to enhance the performance of 802.11 DCF. However, EDCF only reduces the internal collisions within a station, and external collisions between stations remain high in ad-hoc networks. In this paper, we propose to adopt an adaptive backoff window control technique, based on a dynamic value of the initial value of the range in which the backoff is chosen, so the backoff timer is randomly chosen in the range (InitRng, CW-1). We use ns-2 simulation to evaluate the throughput of our scheme. Results show that the throughput is improved for our scheme compared to the original DCF due to the reduced the number of collisions.
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| 키워드(Keyword) |
IEEE 802.11 DCF
backoff algorithm
collision
Wireless Local Area Networks (WLANs)
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| 파일첨부 |
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