کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
449749 | 1443245 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Fixed collision rate back-off scheme for collision resolution in wireless networks Fixed collision rate back-off scheme for collision resolution in wireless networks](/preview/png/449749.png)
This investigation proposes a fixed collision rate (FCR) back-off algorithm for wireless networks. The proposed scheme takes advantage of the central unit (CU) in a wireless network to broadcast a common back-off window size to all the users, significantly alleviating the unfairness of bandwidth utilization in conventional binary exponential back-off (BEB) algorithms. It is shown that, when maximum throughput is achieved, collision rate is almost a constant for any traffic load. In the operation of the FCR, the CU dynamically adjusts the back-off window size to keep the collision rate at a constant level for maximum throughput. Simulation results demonstrate that the unfairness of bandwidth utilization in the BEB is significantly lessened and the throughput can be maintained at e-1≈0.368e-1≈0.368 when the number of users approaches infinity. The capture effect even further improves system performance.
Journal: AEU - International Journal of Electronics and Communications - Volume 61, Issue 1, 2 January 2007, Pages 43–50