JOINT COVERAGE CONTROL AND CHANNELASSIGNMENT FOR COORDINATED WIRELESS LANS

MPhil Thesis Defence


Title: "JOINT COVERAGE CONTROL AND CHANNELASSIGNMENT FOR COORDINATED WIRELESS 
LANS"

By

Mr. Avishek Kumar THAKUR


Abstract

We consider optimizing user throughput bandwidth for a coordinated wireless 
local area network (WLAN) with maximum power association, i.e., users associate 
with the access point (AP) with the maximum power. APs may be deployed anywhere 
and user density may be non-uniform. To improve throughput, one may control the 
coverage of each AP by tuning its transmit power to balance the signal strength 
users receive and interference users suffer (maximizing AP power, therefore, is 
not an optimal strategy). Furthermore, orthogonal channels should be properly 
assigned to the APs to achieve the best throughput. Because coverage control 
and channel assignment are mutually dependent, they need to be jointly 
optimized.

We study the novel problem of maximizing throughput bandwidth by jointly 
optimizing coverage control and channel assignment given maximum power 
association. We first formulate it as a non-convex problem and show that it is 
NP-hard. We then propose an efficient heuristic termed OPAC (Optimizing Power 
and Channel) to address it. Through extensive simulation, OPAC is shown to 
outperform traditional and state-of-the-art schemes by a wide margin in terms 
of throughput (more than 40% improvement in our simulation) and fairness.


Date:			Friday, 7 July 2017

Time:			3:00pm - 5:00pm

Venue:			Room 2132B
 			Lift 19

Committee Members:	Prof. Gary Chan (Supervisor)
 			Dr. Raymond Wong (Chairperson)
 			Dr. Pan Hui


**** ALL are Welcome ****