JICCE (한국정보통신학회)
Current Result Document :
| 한글제목(Korean Title) |
A New Backoff algorithm considering Hop Count for the IEEE 802.11 Distributed Coordination Function |
| 영문제목(English Title) |
A New Backoff algorithm considering Hop Count for the IEEE 802.11 Distributed Coordination Function |
| 저자(Author) |
Jae-Hyun Nam
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| 원문수록처(Citation) |
VOL 05 NO. 03 PP. 0205 ~ 0208 (2007. 09) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
The IEEE 802.11 is a MAC protocol which has been standardized by IEEE for Wireless Local Area Networks (WLANs). In the IEEE 802.11 WLANs, network nodes experiencing collisions on the shared channel need to backoff for a random period of time, which is uniformly selected from the Contention Window (CW). This contention window is dynamically controlled by the Binary Exponential Backoff (BEB) algorithm. However, the BEB scheme suffers from a fairness problem; some nodes can achieve significantly larger throughput than others. This paper proposes a new backoff algorithm for the IEEE 802.11 DCF scheme. This algorithm uses the hop count for considering fairness. It causes flows with high hop count to generate short backoff interval than those with low hop count, thus getting high priority. Therefore, when a collision occurs, the modified IEEE 802.11 DCF assigns higher priority to flow to be close to a destination.
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| 키워드(Keyword) |
IEEE 802.11 DCF
backoff algorithm
hop count
Wireless Local Area Networks (WLANs)
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| 파일첨부 |
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