Wireless sensor network cluster selection protocol for survivability analysis and on basis of coverage
A wireless sensor network and coverage technology, which is applied in wireless communication, network planning, transmission system, etc., can solve the problems of random weakness of the cluster head election method, achieve accurate and comprehensive survivability assessment, and prolong the survival time
Active Publication Date: 2015-01-21
XIDIAN UNIV
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[0006] In order to solve the above problems, the present invention provides a cluster selection protocol based on coverage as survivability analysis, which solves the weakness of the randomness of the cluster head election method in the LEACH protocol and the deficiency of only using the number of surviving nodes as survivability analysis
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[0052] The entire process from the start of the protocol of the present invention to the death of all nodes in the network can be divided by "wheels". Each round is divided into two phases, which are the cluster formation phase and the stable data transmission phase. At the same time, the calculation of coverage is performed in the sink node, which does not affect the speed of cluster head selection. The time division of the protocol of the present invention is as figure 2 As shown, the process flow chart of this protocol is as follows image 3 shown.
[0053] The present invention assumes that there are n nodes uniformly distributed in one area in the network, and the nodes in the network are stationary or seldom move. In the protocol of the present invention, all nodes in the network are configured with the same energy, that is, the network is a homogeneous network. It divides the running time of the network into several "rounds". In the protocol of the present inventio...
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The invention discloses a wireless sensor network cluster selection protocol for survivability analysis and on the basis of coverage. The protocol overcomes the defects that a cluster-head generating method in an LEACH protocol is random and only the number of survival nodes is taken into consideration. In the LEACH protocol, the node consuming the most energy is a cluster-head node, so that the node selected to be the cluster head is more prone to dying. In order to solve the problem, according to the protocol, the node with most neighbor nodes is selected to serve as the cluster-head node, and coverage is used for survivability analysis of a network, namely the ratio of the coverage area of the survival nodes and the coverage of all the nodes serves as a reference to evaluate survivability, so that the network guarantees that effective survival time of coverage is longer.
Description
technical field [0001] The invention relates to a cluster selection protocol of a wireless sensor network, in particular to a cluster selection protocol for survivability analysis based on coverage. Background technique [0002] A wireless sensor network is an ad hoc network composed of a large number of sensor nodes. This network system can be widely used in environmental monitoring, medical care, military defense, smart home and other fields. By placing a large number of densely deployed sensor nodes in the sensing area, users can monitor the designated area wirelessly. The system architecture of wireless sensor network is usually composed of sensor nodes (that is, all nodes in the cluster), sink nodes (Sink) and task management nodes. A sensor node is a miniature embedded system with relatively weak processing, storage and communication capabilities, and is powered by a battery with limited energy. The aggregation node (Sink) connects the sensor network and the Interne...
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IPC IPC(8): H04W16/18H04W84/18
CPCH04L45/46H04W84/18
Inventor 易运晖朱畅华贺小云权东晓战立岸何先灯牛小菁裴昌幸
Owner XIDIAN UNIV