Title :
Experimental evaluation of distributed radio resource optimization algorithm based on the neural networks for Cognitive Wireless Cloud
Author :
Hasegawa, Mikio ; Ishizu, Kentaro ; Murakami, Homare ; Harada, Hiroshi
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ. of Sci., Tokyo, Japan
Abstract :
In this paper, we apply distributed optimization dynamics of the mutually connected neural networks to RAN selection in heterogeneous type cognitive wireless networks. We evaluate the performance of the proposed approach by implementing it on an experimental heterogeneous wireless network system called Cognitive Wireless Cloud, which supports vertical handover between different radio access networks and various information exchange defined in IEEE1900.4. Our neural algorithm implemented on such an experimental wireless network optimizes objective function without any centralized computation. As the objective functions, we introduce two types of problems, load balancing and QoS satisfaction rate optimization, and compare the performance of the proposed method with those of other distributed RAN selection algorithms on the real wireless system. The experimental results using such a system show that the proposed algorithm exhibits the best performance. Since our algorithm based on the neural network dynamics directly optimizes the objective functions defined for radio resource usage optimization of the entire wireless network by distributed computation on each terminal, its performance becomes better than other algorithm which is based on the improvement of each terminal´s QoS.
Keywords :
cognitive radio; neural nets; optimisation; quality of service; radio access networks; resource allocation; telecommunication computing; IEEE1900.4; QoS satisfaction rate optimization; cognitive wireless networks; distributed radio resource optimization algorithm; heterogeneous wireless network; information exchange; load balancing; neural networks; radio access networks; vertical handover; Artificial neural networks; Heuristic algorithms; Neurons; Optimization; Radio access networks; Throughput; Wireless communication; Cognitive Wireless Cloud; Heterogeneous Wireless Networks; Neural Networks; Optimization; QoS; Radio Resource Management;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops), 2010 IEEE 21st International Symposium on
Conference_Location :
Instanbul
Print_ISBN :
978-1-4244-9117-9
DOI :
10.1109/PIMRCW.2010.5670388