MSHCS-MAC

Abstract

While the recently proposed Slow Hopping based Cooperative Sensing MAC (SHCS-MAC) protocol has the ability to improve aggregate throughput and achieve better coexistence with primary users (PUs) and secondary users (SUs) in cognitive radio (CR) networks where each node has only one radio, it has several limitations. Firstly, SHCS-MAC only covers the communication among SUs within one hop. Additionally, the protocol was implemented and evaluated in a network simulation software which doesn’t always reflect practical environment especially in the case of time synchronization and cooperative spectrum sensing. In this thesis, MSHCS-MAC is proposed. The contribution of MSHCS-MAC is two folds: first, it proposes an extension for SHCS-MAC to provide communication over multiple hops of CR Networks with only one radio is required for relay nodes. Second, a fully functional implementation of MSHCS-MAC is provided so it can be used as a base for future research and deployment of CR networks. MSHCS-MAC is implemented based on common software and hardware such as GNU Radio, USRP and available on both Linux PC and Android mobile device.