A Novel Routing Protocol for Software Defined Radios
Khalid Ahmad Darabkh, Marwa H. Al-Tahaineh, Andraws I. Swidan, Haythem Bany Salameh · 2022
Software Defined Radio (SDR)-powered cognitive radio network architectures are likely to play a prominent role in future 5G networks. Cognitive Radio (CR) and SDR appear to be feasible solutions for enhancing spectrum utilization and optimizing frequency band use among users. Indeed, CR is a type of wireless communication in which wireless devices detect and alter transmission properties in response to environmental sensing. We propose, in this work, a novel joint fully distributed spectrum management and hybrid routing protocol to arrange spectrum sharing among cognitive radio users. In our protocol, secondary users can alternate between the reactive channel selection phase and the proactive channel selection phase based on previous usage information maintained in their database tables about their list of available channels. Specifically, channel availability and utilization are established by investigating Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) transmission effects (pass or collision) and fed into a database table for each secondary user (SU). A java-based simulator is used to test the performance of our protocol. Throughput is utilized as an evaluation metric. According to simulation findings, our protocol considerably reduces collisions between secondary users while accessing spectrum opportunities for the transmission process and achieves higher throughput than the prior relevant protocol, namely, probabilistic and deterministic path selection protocol in the cognitive radio network.