An Efficient Routing Protocol Considering Path Reliability in Cognitive Radio Ad-hoc Networks 


Vol. 39,  No. 11, pp. 730-742, Nov.  2014


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  Abstract

In the case of On-demand routing protocol in cognitive radio ad-hoc networks, broadcasting of control packets may occur common control channel overload and packet collisions during the routing procedure. This situation is to increase the overhead of path finding and also limited to find the accurate and reliable path. Since reliable channel and path finding is restricted, path life time is shorten and path reliability is reduced. In this paper, we propose a new routing algorithm that reduces control channel overhead and increases path life time by considering the probability of appearance of primary user and channel status of neighbor nodes. Each node performs periodic local sensing to detect primary user signal and to derive primary user activity patterns. The probability of primary appearance on the current channel and the channel status can be obtained based on the periodic sensing. In addition, each node identifies the quality of the channel by message exchange through a common channel with neighbor nodes, then determines Link_Levels with neighbor nodes. In the proposed method, the Link Level condition reduces the number of control messages that are generated during the route discovery process. The proposed method can improve path life time by choosing a path through Path_Reliability in which stability and quality are weighted depending on the location. Through simulation, we show that our proposed algorithm reduces packet collisions and increases path life time in comparison with the traditional algorithm.

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  Cite this article

[IEEE Style]

J. Choi and S. Yoo, "An Efficient Routing Protocol Considering Path Reliability in Cognitive Radio Ad-hoc Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 11, pp. 730-742, 2014. DOI: .

[ACM Style]

Jun-Ho Choi and Sang-Jo Yoo. 2014. An Efficient Routing Protocol Considering Path Reliability in Cognitive Radio Ad-hoc Networks. The Journal of Korean Institute of Communications and Information Sciences, 39, 11, (2014), 730-742. DOI: .

[KICS Style]

Jun-Ho Choi and Sang-Jo Yoo, "An Efficient Routing Protocol Considering Path Reliability in Cognitive Radio Ad-hoc Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 11, pp. 730-742, 11. 2014.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880