An Efficient Routing Algorithm Considering Packet Collisions in Cognitive Radio Ad-hoc Network 


Vol. 38,  No. 9, pp. 751-764, Sep.  2013


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  Abstract

In cognitive radio ad-hoc networks, common control channel overload and packet collisions are occured due to indiscriminate broadcasting of control packets. So that the path reliability is reduced and control channel is easily saturated. In this paper, we propose a new routing algorithm considering the probability of appearance of primary user and channel status of neighbor nodes. When the source node needs to transmit a data packet to the destination, it performs route discovery process by exchanging control messages using a control channel in ADOV CR Ad-hoc networks. If any intermediate node doesn"t have common data channel with previous node to transmit data, it doesn"t rebroadcast control packet. And if it has common data channels with previous node, each node determines channel contribution factor with the number of common channels. Based on the channel contribution factor, each node performs different back-off broadcasting. In addition, each node controls control packet flooding by applying to proposed advanced mode using such as number of available channels and channel stability. With the proposed method, the number of control packets to find the data transmission path and the probability of collision among control packets can be decreased. While the path reliability can be increased. Through simulation, we show that our proposed algorithm reduces packet collisions in comparison with the traditional algorithm.

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  Cite this article

[IEEE Style]

J. Kim, J. Choi, M. Shin, J. Lee, S. Yoo, "An Efficient Routing Algorithm Considering Packet Collisions in Cognitive Radio Ad-hoc Network," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 9, pp. 751-764, 2013. DOI: .

[ACM Style]

Jin-Su Kim, Jun-Ho Choi, Myeong-Jin Shin, Ji-Seon Lee, and Sang-Jo Yoo. 2013. An Efficient Routing Algorithm Considering Packet Collisions in Cognitive Radio Ad-hoc Network. The Journal of Korean Institute of Communications and Information Sciences, 38, 9, (2013), 751-764. DOI: .

[KICS Style]

Jin-Su Kim, Jun-Ho Choi, Myeong-Jin Shin, Ji-Seon Lee, Sang-Jo Yoo, "An Efficient Routing Algorithm Considering Packet Collisions in Cognitive Radio Ad-hoc Network," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 9, pp. 751-764, 9. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880