کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
445108 | 1443177 | 2013 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Contention resolution with EIED backoff for bandwidth request in IEEE 802.16 networks Contention resolution with EIED backoff for bandwidth request in IEEE 802.16 networks](/preview/png/445108.png)
In this letter, we suggest contention resolution with exponential increase and exponential decrease (EIED) backoff for bandwidth request in worldwide interoperability for microwave access (WiMAX) networks. In EIED, setting of backoff factor to overcome collision due to contention is very challenging and hence we suggest a method to compute backoff factor with average contention window. Further, to reduce access delay, we estimate the response time based on probability of failure and average contention window. Simulations validate the proposed EIED backoff in terms of contention efficiency, capacity and access delay. The contention efficiency and capacity is improved by 47.50% (for q value of 0.25) and 28.57% (for 25 numbers of transmission opportunity), respectively, when bandwidth request is made with the proposed EIED backoff mechanism.
Journal: AEU - International Journal of Electronics and Communications - Volume 67, Issue 1, January 2013, Pages 40–44