DocumentCode :
1318602
Title :
Optical and wireless hybrid access networks: Design and optimization
Author :
Xia, Ming ; Owada, Yasunori ; Inoue, Masugi ; Harai, Hiroaki
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Volume :
4
Issue :
10
fYear :
2012
Firstpage :
749
Lastpage :
759
Abstract :
The performance of optical/wireless hybrid networks is largely limited by the wireless part. To reduce the wireless transmission, we configure virtual channels in the optical infrastructure as “shortcuts” between selected gateways. Adding virtual channels changes the network topology and affects the optimality of gateway deployment. Meanwhile, the gateway locations dictate the traffic distribution that affects the selection of gateways for virtual-channel placement. We propose to jointly optimize the gateways and virtual channels, and formulate the optimization as a mixed integer programming problem. In addition, we design an efficient heuristic algorithm based on k-means clustering to iteratively optimize these two aspects. Our schemes are evaluated using various network settings (network size, number of gateways, etc.). In particular, a random topology with Ethernet traffic is studied for delay and throughput. Numerical results show that our design and optimization effectively reduce the wireless transmission, which leads to better scalability, smaller traffic delay, and larger throughput.
Keywords :
delays; heuristic programming; integer programming; internetworking; optical fibre LAN; optical fibre subscriber loops; pattern clustering; radio access networks; telecommunication network reliability; telecommunication network topology; telecommunication traffic; wireless channels; Ethernet traffic; gateway deployment; heuristic algorithm; k-mean clustering; mixed integer programming problem; network topology; optical infrastructure; optical-wireless hybrid access networks; random topology; traffic delay; traffic distribution; virtual-channel placement; wireless transmission; Heuristic algorithms; Logic gates; Optimization; Passive optical networks; Throughput; Wireless communication; Access network; Delay; Hybrid network; Optical and wireless; Optimization; Passive optical network; Small world; Throughput;
fLanguage :
English
Journal_Title :
Optical Communications and Networking, IEEE/OSA Journal of
Publisher :
ieee
ISSN :
1943-0620
Type :
jour
DOI :
10.1364/JOCN.4.000749
Filename :
6331136
Link To Document :
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