Design and Analysis for MAC Protocols in Cognitive Radio Networks

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• Professor Li-Chun Wang, National Chiao-Tung University, Taiwan
• Thursday 30 April 2009, 11:00-13:00
• Dennis Gabor Seminar Room 611, EE Dept..

If you have a question about this talk, please contact kkleung.

In this talk, we discuss some medium access control (MAC) design issues in cognitive radio (CR) networks, including (1) Location-aware cognitive spectrum identification with concurrent transmission; (2) Neighbor-aware cognitive spectrum access with QoS provisioning; (3) Traffic-aware cognitive spectrum handoff with pre-emptive interruption; (4) Topology-aware concurrent transmission cognitive MAC protocol.

In this first part, we discuss how to alleviate the burden of spectrum scanning in a CR device by means of location awareness. In the second part, a cognitive MAC protocol for establishing an overlaying ad hoc network is presented. In the third part, we discuss link maintenance performance issues for spectrum handoff. In the last part, we investigate how to establish concurrent transmission links to enhance the throughput in a hybrid infrastructure-based and ad hoc CR network. At the end, we will also discuss some other open research challenges in MAC protocol design of cognitive radio networks.

Biography: Professor Li-Chun Wang: Li-Chun Wang (S 92-M 96-SM 06) received the B.S. degree in electrical engineering from the National Chiao-Tung University, Hsinchu, Taiwan, in 1986, the M.S. degree in electrical engineering from the National Taiwan University, Taipei, Taiwan, in 1988, and the M.Sc. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology, Atlanta, in 1995 and 1996, respectively.

From 1990 to 1992, he was with Chunghwa Telecom. In 1995, he was affiliated with Northern Telecom in Richardson, Texas. From 1996 to 2000, he was with AT&T Labs, where he was a Senior Technical Staff Member in the Wireless Communications Research Department. In August 2000, he joined the Department of Communication Engineering of National Chiao-Tung University in Taiwan as an associate professor and has been a full professor since August 2005. Dr. Wang was a co- recipient of the Jack Neubauer Best Paper Award from the IEEE Vehicular Technology Society in 1997. His current research interests are in the areas of cellular architectures, radio network resource management, cross-layer optimization for cooperative and cognitive wireless networks. He is the holder of seven U.S. patents with four more pending.

Related references for this talk: 1. Li-Chun Wang and Anderson Chen, “Li-Chun Wang and Anderson Chen, “Effects of Location Awareness on Concurrent Transmissions for Cognitive Ad Hoc Networks Overlaying Infrastructure-Based Systems,” to appear in IEEE Trans. on Mobile Computing, 2008. [Pre-print version is available at http://doi.ieeecomputersociety.org/10.1109/TMC.2008.72]

2. Li-Chun Wang, Anderson Chen, and David W. L. Wei, “A Cognitive MAC Protocol for QoS Provisioning in Ad Hoc Networks,” submitted to IEEE Trans. on Vehicular Technology. [Conference version is available at IEEE Consumer Communications and Network Conference, Cognitive Radio Workshop, Las Vega, Jan. 2007

3. Li-Chun Wang, Chung-Wei Wang, Yin-Chih Lu, and Chuan-Ming Liu, “A Concurrent Transmission MAC Protocol for Enhancing Throughout and Avoiding Spectrum Sensing in Cognitive Radio,” IEEE Wireless Communications and Networks Conference, Hong Kong, China, Mar. 2007

4 . Li-Chun Wang and Chung-Wei Wang, “Spectrum Handoff for Cognitive Radio Networks with Reactive Sensing,” IEEE APWCS , 2008.

5. Li-Chun Wang and Chung-Wei Wang, “Spectrum Handoff for Cognitive Radio Networks: Reactive-Sensing or Proactive-Sensing?” Dynamic Spectrum Access – Cognitive Radio Network (DSA-CRN) Workshop, Austin, Dec. 2008.

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