Hybrid wireless-optical broadband access network (WOBAN): network planning and setup
Sarkar, S.
Hong-Hsu Yen
Dixit, S.
Mukherjee, B.
Dept. of Comput. Sci., Univ. of California, Davis, CA;
This paper appears in: Selected Areas in Communications, IEEE Journal on
Publication Date: Aug. 2008
Volume: 26,
Issue: 6, Part Supplement
On page(s): 12-21
ISSN: 0733-8716
INSPEC Accession Number: 10178194
Digital Object Identifier: 10.1109/JSACOCN.2008.032207
Current Version Published: 2008-08-05
Abstract
In a WOBAN, the back end is a wired optical network, the front end is managed by wireless connectivity, and, in between, the tail ends of the optical part [known as optical network unit (ONU)] communicate directly with wireless access points (AP). We study a WOBAN deployment scenario and investigate an algorithm to optimize the placement of multiple ONUs. To obtain some representative data on locations of typical wireless users, we have conducted a survey on the distribution and types of wireless routers in the Wildhorse residential neighborhood of North Davis, CA. We also formulate the multiple-ONU deployment problem using a combinatorial optimizer, viz., simulated annealing. Having found the suitable locations for ONUs, we compare the expenditures of a WOBAN vs. a wired access solution, namely Passive Optical Network (PON). To capture the challenges behind a complete WOBAN setup, we propose and investigate a joint optimization algorithm, which considers design aspects of both the wireless front end, such as avoiding interference among neighboring APs, and the optical back end, such as minimizing expensive fiber layout.
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