Routing method for wireless multimedia sensor network distinguishing service in coal mine

Abstract

The invention provides a routing method for a wireless multimedia sensor network distinguishing service in a coal mine. The method comprises the following steps of: by a cluster head node, establishing a total QoS evaluation function of a sensing data service, a voice data service and a video data service by using a linear weighting method according to the WMSNs transmission delay, the transmission packet loss rate and the transmission energy consumption of the paths corresponding to the sensing data service, the voice data service and the video data service; according to the priority of the sensing data service, the voice data service and the video data service, respectively calculating the best paths corresponding to the sensing data service, the voice data service and the video data service by using a differential evolution algorithm based on the maximum constraint value of the total QoS evaluation function. The invention realizes three node disjoint paths for three multimedia services, realizes differentiated services of the three multimedia services in the coal mine, and guarantees different requirements of service quality of the three multimedia services for transmission delay, transmission loss rate and transmission energy consumption.

Description

Technical field [0001] The invention relates to the technical field of wireless multimedia sensor networks, in particular to a routing method for differentiated services of a wireless multimedia sensor network underground in a coal mine. Background technique [0002] Coal mine safety production has an urgent need for environmental monitoring, wireless voice communication and wireless video surveillance. Wireless Multimedia Sensor Networks (Wireless Multimedia Sensor Networks, WMSNs) is a new type of sensor network that introduces multimedia applications such as audio, image, and video on the basis of traditional wireless sensor networks. WMSNs have fast and convenient wireless access, flexible topological structure and rich multimedia perception capabilities. For this reason, it is proposed to build WMSNs underground in coal mines to further improve the capabilities of underground environmental monitoring, wireless voice communication and wireless video monitoring, and to ensure...

AI Technical Summary

Problems solved by technology

Therefore, nodes closer to the sink node need to process and forward more multimedia services, resulting in a cone-shaped distribution of network traffic.

Considering the limited computing power and energy of WMSNs nodes in coal mines, the conical distribution of network traffic will inevitably lead to high network delay, packet loss rate and energy consumption of WMSNs in banded structures, making it difficult to provide multimedia services. QoS Guarantee

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