Platform for Load Balancing and Throughput Enhancement with Cognitive Radio

Seishi HANAOKA
Junji YAMAMOTO
Masashi YANO

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B    No.8    pp.2501-2508
Publication Date: 2008/08/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.8.2501
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Next Generation Broadband Access Technologies)
Category: 
Keyword: 
cognitive radio,  WiMAX,  wireless LAN,  system switching,  testbed system,  load balancing,  platform,  

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Summary: 
The cognitive radio system consists of multiple wireless access systems that cover overlapping areas and cognitive terminals that use one or more of the wireless access systems simultaneously. In this paper, we describe the system architecture of a platform for load balancing and throughput enhancement with cognitive radio system. In our platform, each terminal, which can access multiple radio systems, operates with a single local IP address. Based on our platform, we have developed both simulator and testbed system. Through the simulation of and the testing of a testbed system, we prove that systems load balance was achieved between WiMAX and wireless LAN, and total user throughput was increased with the proposed platform. Moreover, load balance to satisfy both real time service and best effort service. These results demonstrate the platform described in the paper can achieve a convergence with plural wireless systems.