For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
Future Channel Utilization-Aware Routing for Cognitive Radio Ad Hoc Networks
Celimuge WU Juan XU Yusheng JI Satoshi OHZAHATA Toshihiko KATO
IEICE TRANSACTIONS on Communications
Publication Date: 2015/01/01
Online ISSN: 1745-1345
Type of Manuscript: Special Section PAPER (Special Section on Quality of Diversifying Communication Networks and Services)
cognitive radio ad hoc networks, routing protocol, future channel utilization,
Full Text: PDF(1.6MB)
>>Buy this Article
Cognitive radio ad hoc networks can be used to solve the problems of limited available spectrum and inefficient spectrum usage by adaptively changing their transmission parameters. Routing protocol design has a significant impact on the network performance. However, an efficient protocol that takes account of primary user flows and the long-term channel assignment issue in route selection is still missing. In this paper, we propose AODV-cog, a cognitive routing protocol for CSMA/CA ad hoc networks based on AODV. AODV-cog chooses a route by considering the effect on the primary users, available channel bandwidth and link reliability. AODV-cog also takes account of future channel utilization which is an important but underexplored issue. AODV-cog switches channels for secondary user flows when network congestion occurs. We use theoretical analysis and computer simulations to show the advantage of AODV-cog over existing alternatives.