Link-quality-based hierarchical routing method

A link quality, layered technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as low efficiency, and achieve the effect of making up for low efficiency and improving network efficiency

Active Publication Date: 2014-04-02
HOHAI UNIV
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Problems solved by technology

[0005] Purpose of the invention: Aiming at the low efficiency of the planar routing method and the defect of insufficient link quality in the hierarchical routin

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Embodiment Construction

[0024] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0025] The core idea of ​​the flat routing method: all nodes have the same status and function, and the data is sent to the sink node in a single-hop or multi-hop manner. The advantage is that the method is simple and easy to maintain, and it is suitable for a small number of small networks. The disadvantage is that most planar methods rely on flooding and continuous message broadcasting. Even considering the link quality, the traffic is still very large, and the overall energy consumption of the ...

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Abstract

The invention discloses a link-quality-based hierarchical routing method. The routing method is designed and implemented based on link quality on the premise of a hierarchical topology structure, so that the shortcomings of lower efficiency of a flat routing method and insufficient consideration of a hierarchical routing method about the link quality are overcome, and the network efficiency is further improved. A method for LQEWAL (link quality estimation based on time-window-based exponentially weighted moving average algorithm and average link quality indication) is disclosed, so that inter-node link quality information can be accurately and timely acquired; an algorithm for NIL (network initialization based on LQEWAL) is adopted for an EBCLQ (energy balanced cluster routing algorithm based on link quality), and information such as the inter-node link quality information and energy can be acquired by the algorithm for NIL; a clustering process consisting of three steps of candidate cluster head generation, formal cluster head establishment and cluster establishment is involved in the EBCLQ; an algorithm for slot allocation based on link quality and a multi-hop or one-hop algorithm based on cluster-head classification are involved in the EBCLQ.

Description

technical field [0001] The invention relates to a routing method, in particular to a hierarchical routing method based on link quality, and belongs to the technical field of wireless sensor networks. Background technique [0002] Advances in sensor technology, microelectronics technology, embedded computing technology, distributed information processing technology, and wireless communication technology have promoted the development of low-power multifunctional sensors, and have given birth to wireless sensor networks. Since the wireless sensor network overcomes the shortcomings of the traditional monitoring network such as difficult deployment and high cost, it is widely used in environmental monitoring, military monitoring, infrastructure protection and other fields, reflecting a huge application prospect. [0003] At present, the biggest challenge facing wireless sensor networks is limited energy. The routing method used as the basis of networking must take advantage of th...

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Application Information

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IPC IPC(8): H04L12/715H04L12/721
Inventor 毛莺池王康王久龙任道宁接青朱沥沥
Owner HOHAI UNIV
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