RAC2E: Novel rendezvous protocol for Asynchronous Cognitive radios in Cooperative Environments

This paper introduces a novel rendezvous protocol (RAC
²
E) for dynamic control channel provisioning among cognitive radios in a decentralized and cooperative ad-hoc environments. Unlike previous work in the field, RAC
²
E does not require synchronization in the radio environment. Its main characteristics are lightweight design and scalability. The paper elaborates RAC
²
E operation, gives a numerical analysis of its performance behavior under different circumstances and demonstrates its functionalities on a testbed platform realized with four Universal Software Radio Peripheral 2 (USRP2) nodes.