Channel assignment and reallocation algorithms for cognitive radio systems

Ken Hiraga, Kazunori Akabane, Hiroyuki Shiba, Kazuhiro Uehara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Wireless communication services have been increasing rapidly and this progress has caused a shortage in frequency resources. Cognitive radio technology is expected to enable frequency resources to be used more efficiently. When several wireless communication systems simultaneously use cognitive radio technology, the priority level of each system for frequency use is set and the frequency resource is shared between the systems according to the priority level. In cognitive radio systems, algorithms for channel assignment to access points (AP) have to manage priority levels in frequency use. The conventional dynamic channel assignment (DCA) technology cannot be used in cognitive radio systems without modification since the technology does not have the scheme to manage priority level in the frequency use. We have proposed methods of channel assignment and channel reallocation that are suitable for cognitive radio systems and evaluated our proposed methods using a computer simulation. In addition, we have proposed a new frequency utilization efficiency criterion for cognitive radio systems. copyright

Original languageEnglish
Title of host publication2008 14th Asia-Pacific Conference on Communications, APCC 2008
Publication statusPublished - Dec 1 2008
Externally publishedYes
Event2008 14th Asia-Pacific Conference on Communications, APCC 2008 - Akihabara, Tokyo, United States
Duration: Oct 14 2008Oct 16 2008

Publication series

Name2008 14th Asia-Pacific Conference on Communications, APCC 2008

Other

Other2008 14th Asia-Pacific Conference on Communications, APCC 2008
CountryUnited States
CityAkihabara, Tokyo
Period10/14/0810/16/08

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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    Hiraga, K., Akabane, K., Shiba, H., & Uehara, K. (2008). Channel assignment and reallocation algorithms for cognitive radio systems. In 2008 14th Asia-Pacific Conference on Communications, APCC 2008 [4773702] (2008 14th Asia-Pacific Conference on Communications, APCC 2008).