Title :
Geographical opportunistic routing in dynamic multi-hop cognitive radio networks
Author :
Tang, Xing ; Chang, Yanan ; Zhou, Kunxiao
Author_Institution :
Comput. Sch., Wuhan Univ., Wuhan, China
Abstract :
In this paper, we discuss the issue of unicast routing in dynamic CR networks. The problem of our concern is: given a set of CR nodes with geographical positions and temporarily available channels, how to design a protocol so that the average number of transmissions per packet for a unicast transmission is minimized. We propose a novel distributed protocol where packets are transmitted through successively geographic closer intermediate destination nodes, until eventually destination is reached. The intermediate destination nodes are within a two-hop neighborhood and locally chosen by a heuristic algorithm we develop. A priority-based opportunistic routing method is adopted to forward the packets between two nearby intermediate destination nodes. Extensive simulations are conducted to show the performance of our protocol.
Keywords :
cognitive radio; routing protocols; telecommunication network routing; wireless channels; distributed protocol; dynamic CR network; dynamic multihop cognitive radio network; geographic closer intermediate destination nodes; geographical opportunistic routing; geographical position; heuristic algorithm; priority-based opportunistic routing method; temporarily available channel; unicast routing; unicast transmission; Measurement; Relays; Routing; Routing protocols; Unicast; Wireless networks; cognitive radio networks; geographic routing; opportunistic routing; unicast routing; wireless networks;
Conference_Titel :
Computing, Communications and Applications Conference (ComComAp), 2012
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4577-1717-8
DOI :
10.1109/ComComAp.2012.6154853