Abstract
In wireless sensor networks, sink mobility support is one of the essential functionalities in many applications. With continuous advancement, future applications will require not only sink mobility support but also high-performance data delivery service. Multipath routing is one of the promising technologies for improving data delivery performance by collaboratively using alternative or redundant multiple routing paths. However, existing multipath routing protocols had not dealt with sink mobility. As a result, they lead to bad performance in terms of energy efficiency due to the end-to-end path reconstruction. Consequently, a novel multipath management scheme is required thereby supporting sink mobility without performance degradation. In this paper, we propose a multipath management scheme for supporting sink mobility. The proposed scheme dynamically constructs multipath along the moving path of a sink. In addition, the proposed scheme provides the path shortening schemes according to the sink’s movement for reducing energy consumption. Our simulation results show that the proposed scheme is superior to existing path management schemes in terms of reliability and energy efficiency.
Highlights
Sink mobility is a fundamental requirement in wireless sensor networks (WSN) because mobile sinks appear frequently in many applications as data collectors, administrators, and users [1, 2]
The effective sensor data collection services that can be provided by sink mobility are promoting the practical development of wireless sensor networks
We propose a novel multipath management scheme called MPM for supporting sink mobility in wireless sensor networks
Summary
Sink mobility is a fundamental requirement in wireless sensor networks (WSN) because mobile sinks appear frequently in many applications as data collectors, administrators, and users [1, 2]. In single-path routing, a few works have dealt with the path management scheme for supporting sink mobility They maintain the connection between a source and a mobile sink without end-to-end path reconstruction by the agent control mechanism. In the footprint chaining mechanism [8], a mobile sink makes a connection between the closest neighbor node and the agent This path extension is continuously conducted and the routing path is constructed along the moving path of the sink. In multipath routing, they lead to performance degradation since their path management mechanisms result in constructing a single path along the moving path of a mobile sink. We propose a novel multipath management scheme, called MPM, for establishing end-to-end multiple routing paths during the sink moves.
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