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We focus on the minimum-energy multicasting (MEM) problem in Duty-Cycle Wireless Sensor Networks (DC-WSN) and propose two improved algorithms to solve it. We first formulate the MEM problem as a Group Steiner Tree (GST) model, which can be solved by a series of well-known approximate algorithms. We adopt one of best known GST approximate approaches to directly solve this problem but it still takes...
Group Steiner Problem (GSP) is an important generalization of some basic NP-hard problems. Many complex real-world applications require solving the GSP in graphs modeling the topology of the given problem, such as: the design of Very Large Scale Integration (VLSI) circuits, the design of a minimal length irrigation network, and routing problems for wireless sensor networks. We show our design of a...
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