A construction method of heterogeneous network in random multi-sink mode

Abstract

The invention discloses a heterogeneous network construction method in a random multi-SINK mode, belonging to the technical field of wireless sensors. In the method for constructing a wireless sensor network, the heterogeneous nodes use their own energy, reachable node set, average neighbor node distance, and distance set as cluster head election criteria, and use the distance set as an adjustment reference value to dynamically adjust the cluster radius to realize cluster Internal energy optimization; take the energy of the single transit loss of the cluster head as the threshold, comprehensively consider its own energy and the influence of the distance signal set in the multi-sink mode, and construct the optimal network topology structure; at the same time, shorten the communication distance of single hop in the cluster; The cluster radius dynamic adjustment strategy ensures that the physical size of the cluster changes with the change of location, reducing the load on the cluster head node during data collection in the cluster; inter-clusters seek the optimal communication path in multi-sink mode to ensure network connectivity While slowing down the energy consumption of cluster-head nodes, avoiding the premature death of some cluster-head nodes.

Description

technical field [0001] The invention relates to a method for constructing a heterogeneous network in a random multi-SINK mode, and belongs to the technical field of wireless sensors. Background technique [0002] Wireless sensor network WSN (Wireless Sensor Networks) is a distributed sensor network, its end is the sensor node that can sense and check the outside world. Because the battery energy of sensor nodes is limited, the life cycle of wireless sensor network is a main index to evaluate the performance of the network, and the energy utilization efficiency of sensor nodes is closely related to the life cycle of the network. [0003] In order to improve the energy utilization efficiency of sensor nodes, it is necessary to cluster the nodes in the network. The so-called clustering is to divide the nodes of WSN into many groups (called clusters), and each cluster consists of a cluster head node and member nodes. Composition, member nodes perceive and collect data and send ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing problems in the clustering and routing process of wireless sensor networks, such as low node energy utilization, unbalanced network energy consumption, and short network life cycle, the multi-sink model with random heterogeneous performance For a sensor network, the present invention provides a method for constructing a heterogeneous network in a random multi-SINK mode. When the method constructs a heterogeneous network in a random multi-SINK mode, according to the node μ i own energy, node μ i reachable node set T Nei (μ i ,r i ), node μ i The average neighbor node distance d ave and node μ i The distance set d_RSSI(μ i , sink l ) to determine whether it is elected as the cluster head node;

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