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Mobility-Enhanced Reliable Geographical Forwarding in Cognitive Radio Sensor Networks.
Suleiman Zubair1, Sharifah Kamilah Syed Yusoff2, Norsheila Fisal3
1UTM-MIMOS Centre of Excellence in Telecommunication Technology, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Malaysia. zsuleiman2@live.utm.my.
Sensors (Basel, Switzerland)
|February 4, 2016
Summary
Mobile cognitive radio sensor networks (MCRSN) face challenges with node mobility affecting routing. This study introduces a reliable geographical forwarding protocol (MROR) to enhance stability and throughput in these networks.
Area of Science:
- Computer Science
- Wireless Communication
- Network Engineering
Background:
- Mobile cognitive radio sensor networks (MCRSN) are crucial for the Internet of Things (IoT) and mobile devices.
- Node mobility in MCRSNs poses challenges to route stability, spectrum opportunities, and primary user (PU) protection.
- Existing routing protocols struggle to address these mobility-induced issues effectively.
Purpose of the Study:
- To propose a novel mobile reliable geographical forwarding routing (MROR) protocol for MCRSNs.
- To enhance route stability and throughput by considering mobility-induced factors.
- To ensure primary user (PU) protection and efficient spectrum utilization.
Main Methods:
- Developed a mobility-induced channel availability model for robust geographical forwarding.
- Integrated PU activity and a mobility-induced guard (mguard) distance for PU protection.
- Incorporated random mobility-induced spatio-temporal spectrum opportunities to boost throughput.
- Addressed frequent route maintenance by optimizing routing metrics based on node speed.
Main Results:
- MROR reduced route failure rate by approximately 65% compared to other schemes.
- The protocol improved both throughput and goodput at the network sink.
- MROR demonstrated energy-efficient operation, crucial for resource-constrained CRSNs.
Conclusions:
- MROR offers a robust solution for routing in mobile cognitive radio sensor networks.
- The protocol effectively balances route stability, PU protection, and spectrum opportunities.
- MROR enhances network performance and energy efficiency in dynamic MCRSN environments.
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