Data transmission collaboration processing method for multimedia sensor network

Abstract

A multimedia sensor network data transmission cooperative processing method mainly relates to a method for processing the superfluous environmental data among sensor nodes and occupying network resources reasonably. The data processing method is based on the isomerism of wireless sensor network nodes, requires that the functions of nodes can be dispersed to a maximum extent. The nodes can be divided into the following varieties: an ordinary sensing node 1, a video sensing node 2, an audio sensing node 3, a multimedia cluster head node 4, a base station node 5 and an access node 6. The invention can not only save energy, but also can establish a function dispersing cooperative processing mechanism in a wireless network, which leads the heterogeneous nodes in the whole network not to be interfered with each other, thereby being easy to maintain; besides, the homogeneous nodes can cooperate with each other, thereby being capable of occupying the network resource more reasonably and satisfying the demand of actual application more effectively.

Description

Technical field [0001] The invention relates to a processing method for data transmission cooperation between sensor nodes in a wireless sensor network, and belongs to the cross field of embedded development and computer network technology. Background technique [0002] Wireless Sensor Network (WSN) is the product of the development and integration of information technology such as microelectronics technology, Ad Hoc wireless network, and distributed computing. A multi-hop self-organizing network system formed by wireless sensor network nodes through wireless communication is aimed at cooperatively sensing, collecting and processing the information of the sensing objects in the network coverage area. It has very broad application prospects in the fields of military, medical, agriculture, mining and environmental monitoring. [0003] A distributed multimedia communication system is a multimedia communication system that can complete multimedia communication services and is composed...

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Problems solved by technology

[0007] In the course of the research, the inventor found that the above two data transmission cooperative processing schemes of wireless sensor networks have certain deficiencies: the former is that the cluster leader node inquires whether the stations in the cluster have transmission requests according to the order of node numbers, and this scheme can effectively avoid the wireless channel. data conflicts, but the way of sequential query will have a considerable impact on the real-time performance of data transmission; the latter is to increase the relay node between the cluster head node and the video node to be responsible for image compression coding, although reducing the number of camera nodes While image transmission consumes energy, it can alleviate the energy consumption pressure of cluster head node image processing, but the additional one-hop forwarding often has a certain impact on transmission quality and delay, and the increase in bit error rate and long delay are unavoidable

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