Improved directed diffusion routing protocol based on network coding

Abstract

The invention provides an improved directed diffusion routing protocol based on network coding; and the protocol is characterized in that a hop field is established in the interest diffusion and gradient establishment process, a network coding strategy is utilized, and original interest information is transmitted after being coded, so that the transmission times can be remarkably reduced; predicted hop count and visible route are used in the detection data transmission process, so that the forwarding range of the data detection is narrowed, and the detection data is transmitted after being network-coded; and node residual energy, energy threshold value, average residual energy of neighbor nodes and inter-node transmission distance are considered for the evaluation and judgment of a route reinforcing stage, so that the network energy consumption is balanced. The performance indexes of the protocol such as node average residual energy and network throughput are remarkably improved compared with a directed diffusion protocol.

Description

technical field [0001] The invention belongs to the technical field of network communication, and specifically refers to an improved directed diffusion routing protocol based on network coding. Background technique [0002] The maturity of wireless communication, embedded, sensor, integrated circuit and other technologies has led to the rapid development of sensors with small size, low power consumption and strong functions. Tiny sensors capable of sensing, communicating and computing are beginning to appear all over the world. The wireless sensor network is composed of a large number of cheap miniature sensor nodes deployed in the monitoring area. It forms a multi-hop self-organizing network system through wireless communication. Its purpose is to cooperatively perceive, collect and process objects in the network coverage area. information and send it to observers. At present, wireless sensor networks have been widely used in various fields. Although the wireless sensor ...

AI Technical Summary

Problems solved by technology

However, this protocol is not sufficiently energy-efficient

First, the directed diffusion routing protocol periodically performs interest flooding and network-wide forwarding of all detection data, which not only increases network delay but also increases energy consumption

Second, the protocol does not consider node energy. When multiple enhanced paths use the same node, the energy of the node will be exhausted in advance, which will affect the work of the entire network.

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