Dual power assignment for network connectivity in wireless sensor networks

Strong connectivity has been an important feature explored in many network applications, such as sensor networks. This research focuses on a dual power assignment problem, where each sensor node has two transmission power levels. The objective is to minimize the number of wireless sensor nodes assigned to transmit messages at the high transmission power level, while the resulting sensor network is strongly connected. We propose an efficient 1.75-approximation algorithm for this challenging problem. We not only show that the approximation ratio of the proposed algorithm is tight but also demonstrate the capability of the proposed algorithm in terms of simulation experiments

[1]  Wen-Tsuen Chen,et al.  The strongly connecting problem on multihop packet radio networks , 1989, IEEE Trans. Commun..

[2]  Hyeong-Ah Choi,et al.  Dual power management for network connectivity in wireless sensor networks , 2004, 18th International Parallel and Distributed Processing Symposium, 2004. Proceedings..

[3]  Andrew T. Campbell,et al.  A case for variable-range transmission power control in wireless multihop networks , 2004, IEEE INFOCOM 2004.

[4]  Peter E. Sholander,et al.  Energy-efficient networking techniques for wireless sensor networks , 2003, IEEE Military Communications Conference, 2003. MILCOM 2003..

[5]  Andrea E. F. Clementi,et al.  The Power Range Assignment Problem in Radio Networks on the Plane , 2000, STACS.

[6]  Andrea E. F. Clementi,et al.  On the approximation ratio of the MST based heuristic for the energy-efficient broadcast problem in static ad-hoc radio networks , 2003, Proceedings International Parallel and Distributed Processing Symposium.

[7]  Madhav V. Marathe,et al.  Algorithmic Aspects of Topology Control Problems for Ad Hoc Networks , 2005, Mob. Networks Appl..

[8]  Xiuzhen Cheng,et al.  Strong Minimum Energy Topology in Wireless Sensor Networks: NP-Completeness and Heuristics , 2003, IEEE Trans. Mob. Comput..

[9]  Ram Ramanathan,et al.  Topology control of multihop wireless networks using transmit power adjustment , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[10]  Andrzej Pelc,et al.  Power consumption in packet radio networks , 2000, Theor. Comput. Sci..

[11]  Andrea E. F. Clementi,et al.  Hardness Results for the Power Range Assignmet Problem in Packet Radio Networks , 1999, RANDOM-APPROX.