Presentation	2007-11-27 A Reduction Method of Information Overhead for QoS Route Control and Throughput Evaluation in Cognitive Wireless Access Networks Toshiaki YAMAMOTO, Jong-Ok KIM, Akira YAMAGUCHI, Sadao OBANA,
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Abstract(in English)	Various wireless communication systems are now being developed according to various users' needs. For example, the 3^ generation mobile phone system has been explosively popularized worldwide, the coverage area of hot spot that encourages the diffusion of the mobile computing has been widely extended, and local connectivity technologies for ubiquitous networks are being realized. The authors have studied on "cognitive wireless access networks" in order to develop the networks that realize both high spectrum efficiency and high quality of service (QoS) for users. Cognitive wireless access networks can provide various communication routes by adaptively aggregating or switching multiple wireless communication systems. In this paper, we first explain the hierarchical QoS route control scheme in cognitive wireless access networks. The QoS route control requires the quality information of each path, and the effect of QoS route control is in proportion to the amount and accuracy of such quality information. We evaluate the throughput performance considering the information overhead of QoS route control through the computer simulations, and discuss how to decide the definition of path quality, aggregate path qualities, determine the accuracy of monitoring path quality and the time interval of QoS route control.
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Keyword(in English)	Cognitive Radio / QoS / Channel Quality / Multipath Routing
Paper #	SR2007-63
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Committee	SR
Conference Date	2007/11/19(1days)
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Paper Information
Registration To	Software Radio(SR)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	A Reduction Method of Information Overhead for QoS Route Control and Throughput Evaluation in Cognitive Wireless Access Networks
Sub Title (in English)
Keyword(1)	Cognitive Radio
Keyword(2)	QoS
Keyword(3)	Channel Quality
Keyword(4)	Multipath Routing
1st Author's Name	Toshiaki YAMAMOTO
1st Author's Affiliation	Advanced Telecommunications Research Institute International()
2nd Author's Name	Jong-Ok KIM
2nd Author's Affiliation	Advanced Telecommunications Research Institute International
3rd Author's Name	Akira YAMAGUCHI
3rd Author's Affiliation	Advanced Telecommunications Research Institute International
4th Author's Name	Sadao OBANA
4th Author's Affiliation	Advanced Telecommunications Research Institute International
Date	2007-11-27
Paper #	SR2007-63
Volume (vol)	vol.107
Number (no)	352
Page	pp.pp.-
#Pages	6
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