TY - GEN
T1 - Joint design of density of access points and partially overlapped channel assignment for capacity optimization in wireless networks
AU - Zhao, Wei
AU - Fadlullah, Zubair
AU - Nishiyama, Hiroki
AU - Kato, Nei
AU - Hamaguchi, Kiyoshi
PY - 2014/12/18
Y1 - 2014/12/18
N2 - The design of a wireless network is often critically affected by issues such as determining the optimal density of Access Points (APs) and optimal channel assignment by exploiting partially overlapped channels (POCs) for significantly improving the network performance in terms of maximizing the overall network capacity. Contemporary research works have traditionally dealt with these two problems in an isolated manner though they should be considered within the same problem formulation. Furthermore, though deployment of additional APs can improve the network capacity in case there are a few APs in a given area, the APs cannot be indefinitely added to the wireless network. This means that there is an upper bound to the network capacity maximization with respect to the number of APs. In fact, the network capacity starts to dramatically decrease when the number of deployed APs becomes excessive. This performance decrease can be accredited to the substantial interference among the high number of deployed APs. A more fundamental insight into the joint issue and its affect on capacity, in signal to interference plus noise ratio (SINR) is required. In order to address this challenge, in this paper, we propose an approach to jointly optimize the number of APs and POCs assignment. Our proposal derives the existence of the upper bound of the density of APs with POCs, and models the POC assignment to the deployed APs from a novel perspective. Computer-based simulations are conducted to demonstrate the effectiveness of our proposal.
AB - The design of a wireless network is often critically affected by issues such as determining the optimal density of Access Points (APs) and optimal channel assignment by exploiting partially overlapped channels (POCs) for significantly improving the network performance in terms of maximizing the overall network capacity. Contemporary research works have traditionally dealt with these two problems in an isolated manner though they should be considered within the same problem formulation. Furthermore, though deployment of additional APs can improve the network capacity in case there are a few APs in a given area, the APs cannot be indefinitely added to the wireless network. This means that there is an upper bound to the network capacity maximization with respect to the number of APs. In fact, the network capacity starts to dramatically decrease when the number of deployed APs becomes excessive. This performance decrease can be accredited to the substantial interference among the high number of deployed APs. A more fundamental insight into the joint issue and its affect on capacity, in signal to interference plus noise ratio (SINR) is required. In order to address this challenge, in this paper, we propose an approach to jointly optimize the number of APs and POCs assignment. Our proposal derives the existence of the upper bound of the density of APs with POCs, and models the POC assignment to the deployed APs from a novel perspective. Computer-based simulations are conducted to demonstrate the effectiveness of our proposal.
UR - http://www.scopus.com/inward/record.url?scp=84921656474&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921656474&partnerID=8YFLogxK
U2 - 10.1109/WCSP.2014.6992034
DO - 10.1109/WCSP.2014.6992034
M3 - Conference contribution
AN - SCOPUS:84921656474
T3 - 2014 6th International Conference on Wireless Communications and Signal Processing, WCSP 2014
BT - 2014 6th International Conference on Wireless Communications and Signal Processing, WCSP 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 6th International Conference on Wireless Communications and Signal Processing, WCSP 2014
Y2 - 23 October 2014 through 25 October 2014
ER -