Channel Hopping Sequences for Rendezvous Establishment in Cognitive Radio Sensor Networks

• Main Authors: Widist Bekulu Tessema, Byeongung Kim, Junhyung Kim, Wooseong Cho, Kijun Han
• Format: Article
• Language: English
• Published: SAGE Publishing 2014-02-01
• Series: International Journal of Distributed Sensor Networks
• Online Access: https://doi.org/10.1155/2014/872780

In Cognitive Radio sensor networks, a pair of Cognitive Radio (CR) users wishing to communicate should first agree on a specific channel called control channel. Communication rendezvous is used to establish a control channel between CR users. Channel Hopping (CH) protocol is a sequence-based approach that provides an effective method for implementing rendezvous without relying on a Common Control Channel (CCC). In this approach, all CR users hop to the same rendezvous channel and hence this channel will serve as a control channel between them. In this paper, we propose two Channel Hopping Sequences (CHS) to establish a link in CR sensor networks with and without the assumption of global clock synchronization. Our schemes provide successful communication rendezvous within a bounded time interval. Theoretical analysis and simulation results showed that both schemes outperform the existing schemes used for similar purpose in terms of many performance criteria.