Enhanced tree routing protocols for multi-hop and multi-channel cognitive radio network (EMM-TRP)

In this paper, we develop an enhanced multi-hop multichannel tree routing protocol (EMM-TRP) for cognitive radio network and we contributed to the following: (i) we proposed an EMM-TRP that jointly utilized the tree routing algorithm with a spectrum management module in routing decisions. (ii) We also proposed a new metric to find the best route (The main purpose for the design of this metric is safeguarding the PUs traffic from CR node interference and quick data transmission.) (iii) We have improved the EMM-TRP routing tree algorithm search by adding neighbor's table technology. (iv) Finally, we offered recovery and discovery unit in the case of link failure. We carried out our experimental evaluations in ns2 simulator. These evaluations have been shown that EMM-TRP protocol achieves better performance in terms of average throughput, end-to-end delay, overhead and hop count, compared by SAMER, CRP, STOD-RP and CTBR routing protocols.