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To overcome the flaws of ignoring the energy consumption and flooding RREQ packets in the present hybrid routing algorithms for ZigBee networks, we propose in this paper an efficient hybrid routing algorithm without flooding (EHRA). EHRA sufficiently utilizes the information of nodes' neighbors and includes the depth and the residual energy of nodes in its(More)
In wireless sensor networks, it has been shown that collecting data using a mobile sink can drastically reduce energy consumption at the cost of increasing delivery delay of data. In order to decrease the delay, we propose an approach of sink mobility, in which the sink moves along a ring-like route instead of a reciprocal one. Thus, a part of data packets(More)
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