Title :
Energy and traffic aware dynamic topology management for wireless cellular networks
Author :
Hyun-Sik Jung ; Hee-Tae Roh ; Jang-Won Lee
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
In this paper, we study a dynamic topology management problem in the wireless cellular network, in which base stations can be switched on or off to save energy consumption of the network. To model non-uniform traffic demand over the network, we divide the entire network area into subareas, assuming that each of subareas has its own traffic demand, which can be satisfied by allocating enough bandwidth and power from a base station. With this network model, we propose a two-step algorithm for dynamic topology management. In the first step, we obtain the maximum radius of the service area for each base station by solving an optimization problem. In the second step, we first construct a graph based on the maximum radii obtained in the first step. We then identify the minimal set of base stations that should be switched on to satisfy the demand of each subarea in the network based on the shortest path algorithm on the constructed graph. From numerical results, we show that our algorithm provides a significant amount of energy saving, while adaptively considering the traffic demand of each subarea in the network.
Keywords :
bandwidth allocation; cellular radio; energy consumption; graph theory; optimisation; telecommunication network management; telecommunication network topology; telecommunication traffic; bandwidth allocation; base station; energy consumption; energy saving; graph; maximum radii; network model; network subarea; nonuniform traffic demand; optimization problem; shortest path algorithm; traffic aware dynamic topology management; two-step algorithm; wireless cellular network; Bandwidth; Base stations; Energy consumption; Network topology; Switches; Topology; Wireless communication; Cellular networks; Energy saving; Green networks; Topology management;
Conference_Titel :
Communication Systems (ICCS), 2012 IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2052-8
DOI :
10.1109/ICCS.2012.6406139