Abstract

CRUZ FLORES, Liliana; ALFONSO REGUERA, Vitalio  and  PEREZ RODRIGUEZ, Néstor. Rendezvous strategies in multiuser Cognitive Radio networks. EAC [online]. 2018, vol.39, n.3, pp.45-56. ISSN 1815-5928.

Blind rendezvous strategies for dynamic spectrum access in ad-hoc networks have recently focused by many researches on reports. The works have focused mainly on the design of rendezvous strategies between two network devices that actively try to establish communication (rendezvous by pairs). In this paper, the analysis of pair-wise strategies to multiuser networks is extended and a strategy is proposed to implement the rendezvous process between multiple users. The maximum value and expected value of time to rendezvous in multiusers scenario are computationally derived for different network topologies by using different synchronization strategies. The results show that the numerical expressions provide good estimates of the time to rendezvous. Moreover, the proposed synchronization strategy ensures the time to rendezvous in a multi-user network does not exceed the maximum time to rendezvous of a rendezvous by pairs process, regardless of the total number of users and the network topology.

Keywords : Multi-hop networks; Cognitive radio networks; Blind rendezvous; Channel hopping sequences; Expected time to rendezvous.

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