Abstract
Cognitive Radios (CR) [4] enable flexible and improved radio spectrum utilization by allowing a group of CR nodes to utilize unused channels without interference with the channels’ owners [1]. A CR node has a set of available (wireless) channels and this set varies with time, location and activities of the primary (licensed) users. Determining a node’s neighborhood and common channels for communication is non-trivial. We propose several efficient distributed algorithms for node discovery and configuration (NDC) for various CR node models. Krishnamurthy et al. [3] proposed a solution for NDC without a control channel. In their model, each node has a single transceiver. If N is the maximum number of nodes and M is the maximum number of channels, their algorithm uses 2NM timeslots for NDC. Other works assume a common control channel, or every node is equipped with a separate radio interface for each channel or an identical frequency distribution at each node. Please see [2] for a thorough discussion of related work. Here, we extend the algorithms of [3] to other CR node models.
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References
Broderson, R.W., Wolisz, A., Cabric, D., Mishra, S.M., Willkomm, D.: Corvus: A Cognitive Radio Approach for Usage of Virtual Unlicensed Spectrum
Krishnamurthy, S., Chandrasekaran, R., Venkatesan, S., Mittal, N.: Algorithms for Node Discovery and Configuration in Cognitive Radio Networks. Technical Report UTDCS-23-06, The Univ. of Texas at Dallas, Richardson, TX (May 2006)
Krishnamurthy, S., Thoppian, M., Kuppa, S., Chandrasekaran, R., Venkatesan, S., Mittal, N., Prakash, R.: Time-efficient Layer-2 Auto-configuration for Cognitive Radios. In: PDCS 2005, Phoenix, AZ (November 2005)
Mitola, J.: Cognitive Radio: An Integrated Agent Architecture for Software Defined Radio
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Krishnamurthy, S., Chandrasekaran, R., Mittal, N., Venkatesan, S. (2006). Brief Announcement: Synchronous Distributed Algorithms for Node Discovery and Configuration in Multi-channel Cognitive Radio Networks. In: Dolev, S. (eds) Distributed Computing. DISC 2006. Lecture Notes in Computer Science, vol 4167. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11864219_49
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DOI: https://doi.org/10.1007/11864219_49
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-44624-8
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