Cooperative transmission routing method for wireless sensor networks based on multi-relay and multi-hop

Abstract

The invention discloses a cooperative transmission routing method for a wireless sensor network based on multi-relay multi-hop. The method comprises the following steps: step 1, a network initialization phase; step 2, a data preparation phase; step 3, a relay node number selection phase; and step 4, a data transmission phase. According to the cooperative transmission routing method for the wireless sensor network based on multi-relay multi-hop, a normal node in the sensor network sends the received data to an aggregation node at minimum transmission power through a multi-relay multi-hop transmission mode; and the minimum transmission power is calculated through the given interruption probability, and the optimal number of relay links and the optimal number of relay hops on each link can also be determined. By adopting the method, the resource waste caused by the excessive transmission power of source nodes or the occurrence of interruption caused by too low transmission power can be effectively avoided; the phenomenon that the number of relay links and the number of hops with minimum energy consumption can be found under different transmission distances can be ensured, and the problem of too fast energy consumption can be effectively alleviated.

Description

technical field [0001] The invention relates to a wireless sensor network cooperative transmission method, in particular to a wireless sensor network cooperative transmission routing method based on multi-relay and multi-hop, and belongs to the field of wireless sensor network routing protocols. Background technique [0002] Due to its low cost, self-organization, dynamic topology, easy deployment, and high flexibility, wireless sensor networks have been rapidly developed and widely used. They have broad application prospects in many fields such as national defense security, environmental detection, medical care, and intelligent transportation. . At the same time, wireless sensor networks are also facing many challenges, the biggest challenge is the energy supply of wireless sensors. Wireless sensor nodes are usually powered by batteries, and the energy that can be used at one time is very limited. Therefore, in the communication process, the effective use of energy is extr...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a cooperative transmission route for wireless sensor networks based on multiple relays and multiple hops to solve the defect that only multiple single-hop relays are considered in the existing cooperative transmission technology, resulting in unsatisfactory energy-saving effects during long-distance transmission. method, which can ensure that the number of relay links that minimize energy consumption and the number of relay hops on each link can be found under different transmission distances, effectively alleviating the problem of excessive energy consumption

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