Title :
Experimental comparison of blind rendezvous algorithms for tactical networks
Author :
Robertson, Andrew ; Tran, Lan ; Molnar, Joseph ; Fu, Er-Hsien Frank
Author_Institution :
Networks & Commun. Syst. Branch, Naval Res. Lab., Washington, DC, USA
Abstract :
We examine the problem of spectrally agile radios executing blind rendezvous over a set of communication channels using a GNU radio testbed. The performances of the Modified Modular Clock (MMC) and random channel access (RA) algorithms are compared across channel configurations that tactical radios will likely face. We assume no pre-coordinated channel indexing, no knowledge of the set or number of other nodes´ accessible channels, and no control-channel. We find that the MMC algorithm generally outperforms RA modestly in terms of average rendezvous time and substantially in terms of worst-case rendezvous time. We also find that asynchronization can reduce the time to rendezvous, and we describe a framework for optimizing the timeout choices of the MMC algorithm.
Keywords :
clocks; military communication; telecommunication channels; GNU radio testbed; MMC algorithm; accessible channels; asynchronization; blind rendezvous algorithms; channel configurations; communication channels; control-channel; modified modular clock; random channel access algorithms; rendezvous time; spectrally agile radios problem; tactical networks; Clocks; Cognitive radio; Communication channels; Face; Heuristic algorithms; Indexes; Protocols; blind rendezvous; cognitive radio; dynamic spectrum access; modular clock algorithm;
Conference_Titel :
World of Wireless, Mobile and Multimedia Networks (WoWMoM), 2012 IEEE International Symposium on a
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4673-1238-7
Electronic_ISBN :
978-1-4673-1237-0
DOI :
10.1109/WoWMoM.2012.6263760