TY - GEN
T1 - Channel assignment and reallocation algorithms for cognitive radio systems
AU - Hiraga, Ken
AU - Akabane, Kazunori
AU - Shiba, Hiroyuki
AU - Uehara, Kazuhiro
PY - 2008/12/1
Y1 - 2008/12/1
N2 - 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
AB - 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
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M3 - Conference contribution
AN - SCOPUS:66149108675
SN - 4885522323
SN - 9784885522321
T3 - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
BT - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
T2 - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
Y2 - 14 October 2008 through 16 October 2008
ER -