Abstract
In the process of the wireless sensor network research, the issue on the energy consumption and coverage is an essential and critical one. According to the characteristic of the sensor nodes, it is homogeneous, and we proposed the k-degree coverage algorithm based on optimization nodes deployment. First, the algorithm gives the solving procedure of the maximum seamless coverage ratio, when the three-node joint coverage has been provided. Second, when the sensor nodes are covering the monitoring area, the algorithm gives the solving procedure of the expected coverage quality and the judgment methods of the coverage ratio, when the nodes are compared with the nearby ones. And when there is redundancy coverage in the given monitoring area, we have given the solving procedure of any sensor nodes that exist in the redundant nodes coverage. Finally, using the simulation experiment, the results of the coverage algorithm based on optimization nodes deployment are compared with other algorithms in terms of the coverage quality and the network lifetime, the performance indexes have enhanced to 13.36% and 12.92% on average. Thus, the effectiveness and viability of the coverage algorithm based on optimization nodes deployment have been proved.
Highlights
The wireless sensor network is a new type of network system, which is connected by thousands of sensors in the way of self-organizing and hybrid-hop; it is the organic unification of the world of information and the physical world, which has realized the operation of the acquisition, computation, communication, and storage of the data.[1,2,3]
The energy consumption of the network is shown as the effective reduction of the sensor nodes’ quick energy consumption, which can prolong the lifetime of the whole network
The essentiality of effective coverage is that when the concerned moving goal nodes are passing through the monitoring areas, the sensor nodes will complete their coverage first; simultaneously they will wake up their joint nodes to complete the linkage coverage, and the collected data information will be uploaded to sink nodes
Summary
The wireless sensor network is a new type of network system, which is connected by thousands of sensors in the way of self-organizing and hybrid-hop; it is the organic unification of the world of information and the physical world, which has realized the operation of the acquisition, computation, communication, and storage of the data.[1,2,3] With the rapid development of information technology, the wireless sensor network can be mainly applied in all kinds of engineering fields, such as the military affair, environment monitoring, disaster relief, smart home, health care, agricultural production, and transportation.[4,5,6,7]. The effective coverage can be achieved by adding sensor nodes Both of the cases can achieve the expected coverage effectiveness, but both have their own disadvantages.[13,14] First, plenty of sensor nodes gather in high density, generating lots of redundant information, which will cause congestion in the communication linkage, suppress the expandability of the network, lower the service quality of the network, and shorten the whole lifetime of the network.[15] Second, when the concerned targets are in the coverage hole, we cannot take the real-time monitoring and coverage of the goal nodes. The essentiality of effective coverage is that when the concerned moving goal nodes are passing through the monitoring areas, the sensor nodes will complete their coverage first; simultaneously they will wake up their joint nodes to complete the linkage coverage, and the collected data information will be uploaded to sink nodes
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