| Wireless sensor network is a novel measure and control network whichcomposites multiple advanced technologies, and it has drawn widespread attention ofthe research field due to its great application prospect. Routing protocol as one of thekey technologies in wireless sensor network directly reacts on the preferences ofnetwork. Multi-path routing has been widely attended due to the unique advantageswhich single-path routing doesn't have, but the multipath interference has become amain factor that restricts the advantage of multipath played in actual network operation.Therefore, it has both theoretical and practical significance for wireless sensornetworks to study on multi-path routing and anti-interference.This paper aims to design a kind of energy efficient multi-path routing and anti-interference algorithm, Specific research works are as follows:(1)Relevant basic knowledge of the research on multipath and anti-interferencewere summarized, the model, structure, transmit mode, advantages and developingtrend of multipath routing were analyzed at first, then we expound the definition ofinterference in wireless network, introduce two kinds of widely used interferencemodel in research field and give the geometric analysis of them, finally, two kinds oftypical anti-interference strategies were introduced, these lay the foundation for thedesign of our multipath and anti-interference algorithm.(2)Based on the thinking of multipath routing can optimize energy efficiencythrough flow allocation, we consider the influence of flow on both transmission energyconsumption and its equilibrium characteristic, take maximum of the total remainingenergy and minimum of the remaining energy variance as optimal objectives to buildenergy efficiency optimization multi-path routing model. Then a multi-path flowallocating routing algorithm has been proposed based on the model, it can optimizeenergy efficiency of the network by reasonably allocating the flow on multi-path, andachieve the goal of reducing energy consumption and balancing its distributionsimultaneously. (3)According to the problem that there exists interference seriously betweenmultiple path in multipath routing, a joint channel allocation and power controlalgorithm for interference management in wireless sensor network has been presented.In this algorithm, available channel set is established for each link, and channel isprobabilistic allocated according to the energy cost of anti-interference and channelhopping, then virtual power control game on each channel is played to determinenodes' transmit power. Simulation results show that, our algorithm can achieve thegoal of reducing interference energy-efficiently by optimal design of joint theanti-interference technologies of channel allocation and power control. |
PDF Full Text Request