Handshake Sense Multiple Access Control for Cognitive Radio-Based IoT Networks.
Muhammad Shafiq1, Maqbool Ahmad2, Muhammad Khalil Afzal3
1Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 38541, Korea. shafiq.pu@gmail.com.
Sensors (Basel, Switzerland)
|January 13, 2019
Summary
Cognitive Radio (CR) technology addresses Internet-of-Things (IoT) spectrum congestion by enabling secondary users to access licensed bands. A novel Handshake Sense Multiple Access with Collision Avoidance (HSMA/CA) protocol is proposed to manage dense CR networks effectively.
Area of Science:
- Wireless Communication Networks
- Spectrum Management
- Internet-of-Things (IoT)
Background:
- Internet-of-Things (IoT) devices heavily rely on unlicensed Industrial Scientific and Medical (ISM) bands, leading to significant spectrum congestion.
- Cognitive Radio (CR) technology offers a solution by allowing secondary users (SUs) to opportunistically utilize vacant spectrum in licensed bands.
- Dense deployments of CR networks exacerbate spectrum sensing challenges and risk interference with primary users (PUs).
Purpose of the Study:
- To investigate the challenges of spectrum access in CR-based IoT networks.
- To propose a novel protocol, Handshake Sense Multiple Access with Collision Avoidance (HSMA/CA), for efficient spectrum management in dense CR-IoT networks.
- To optimize spectrum sensing periods to enhance system performance while mitigating sensing errors.
Main Methods:
- Development of the Handshake Sense Multiple Access with Collision Avoidance (HSMA/CA) protocol.
- Analysis of the HSMA/CA protocol using a Markov chain model to evaluate throughput.
- Performance verification through simulations.
Main Results:
- The proposed HSMA/CA protocol effectively resolves the hidden primary terminal problem in dense CR networks.
- The scheme ensures the priority rights of primary users (PUs) are maintained.
- Optimized spectrum sensing periods improve system performance by balancing false alarm and misdetection rates.
Conclusions:
- The HSMA/CA protocol is a viable solution for non-collaborative, densely deployed CR-based IoT networks.
- The protocol enhances spectrum utilization while protecting primary user access.
- The findings suggest HSMA/CA can alleviate spectrum scarcity issues in future IoT deployments.
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