Effects of location awareness on concurrent transmissions for cognitive ad hoc networks overlaying infrastructure-based systems

Li-Chun Wang*, Anderson Chen

*Corresponding author for this work

研究成果: Article

54 引文 斯高帕斯(Scopus)

摘要

Through wide-band spectrum sensing, cognitive radio (CR) can identify the opportunity of reusing the frequency spectrum of other wireless systems. However, wide-band spectrum sensing requires energy consumption processes. In this paper, we aim to relieve the burden of spectrum scanning in a CR system by means of location awareness. We investigate to what extent a CR system with location awareness capability can establish a scanning-free region where a peer-to-peer connection of the secondary CR users can coexist with an infrastructure-based connection of the primary user. We compute the concurrent transmission probability of a peer-to-peer connection and an infrastructure-based connection in a system based on the carrier sense multiple access with collision avoidance (CSMA/CA) medium access control (MAC) protocol. It has been shown that the frequency band of the legacy system can be reused up to 45% by the overlaying cognitive ad hoc network if certain location techniques help CR users locate primary and other secondary users.

原文English
文章編號4509435
頁(從 - 到)577-589
頁數13
期刊IEEE Transactions on Mobile Computing
8
發行號5
DOIs
出版狀態Published - 1 五月 2009

指紋 深入研究「Effects of location awareness on concurrent transmissions for cognitive ad hoc networks overlaying infrastructure-based systems」主題。共同形成了獨特的指紋。

引用此