Abstract

FORTUN TAVIO, Beatriz; ORTIZ GUERRA, Erik; PEREZ GARCIA, Julio Cesar  and  PAZ RODRIGUEZ, Wilder. Multiple radios-energy consumption tradeoff in cognitive radio networks rendezvous protocols. EAC [online]. 2018, vol.39, n.3, pp. 1-15. ISSN 1815-5928.

Cognitive Radio is promising and attractive solution to the problem of existing spectral inefficiency. Rendezvous is an essential process in Cognitive Radio Networks through which two or more users coincide in the same channel and establish a communication link. In order to minimize the time to rendezvous in cognitive networks, the idea of using multiple radios in rendezvous algorithms has been developed, but it is important to verify that the energy cost associated with the simultaneous operation of these devices is not unjustifiably affected. This work focuses on analyze the tradeoff between energetic consumption and time to Rendezvous when multiple radios are employed. The RPS and G-FDCH-CS algorithms were selected for run simulations and compare them based on their performance. In the simulated scenarios, with the increase in the number of radios, the energetic cost per time slot increase in both algorithms; and after a period, this increase of radios isn’t an material improve in TTR terms and it means an appreciable energetic cost. The increasing behavior in energetic cost isn’t equal in both algorithms due to the different strategies used to divide and assign the radios’ roles. Meanwhile RPS increases lineally, G-FDCH-CS increases in a stair way showing a better performance.

Keywords : Handshake; Time to Rendezvous, Energetic Performance.

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