1-Persistent Collision-Free CSMA Protocols for Opportunistic Optical Hyperchannels

Authors:
Jing Chen;Jianping Wang;Hui Yu;Ashwin Gumaste;S. Q. Zheng
Affiliations:
Telecommunications Engineering Program, University of Texas at Dallas, Richardson, TX 75083;Department of Computer Science, City University of Hong Kong, Hong Kong,;Computer Engineering Program, University of Texas at Dallas, Richardson, TX 75083;School of Information Technology, Indian Institute of Technology, Powai, Mumbai, India 400076;Department of Computer Science, University of Texas at Dallas, Richardson, TX 75083
Venue:
ICA3PP '08 Proceedings of the 8th international conference on Algorithms and Architectures for Parallel Processing
Year:
2008

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Abstract

Recently, a new WDM optical network infrastructure named SMART [1], which is capable of dynamically setting up, modifying, and tearing down optical connections, was proposed. The performance of SMART is determined by the performance of its hyperchannels, which are essentially optical buses or light-trails. Previously proposed CSMA protocols for unidirectional optical buses can be used as distributed medium access control protocols for hyperchannels. However, these protocols are either unfair, or not work-conserving. In this paper, we propose a class of work-conserving, collision-free, and fair CSMA protocols for opportunistic hyperchannels which are tailored hyperchannels for SMART. We show that the performances of our proposed protocols are much better than that of pi-persistent CSMA and that of priority-based CSMA protocol in terms of throughput and fairness.