A mobile scheduling method for heterogeneous sensor nodes to optimize network lifetime and coverage
A technology of sensing nodes and survival time, applied in network topology, network planning, advanced technology and other directions, can solve problems such as large hardware cost and energy holes, and achieve the effect of reducing time complexity and improving regional coverage.
Active Publication Date: 2021-05-18
ZHEJIANG SHUREN UNIV
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However, the related methods of heterogeneous static sensor nodes also have the problem of energy holes, and the coverage optimization problem of heterogeneous mobile sensor nodes is mainly biased towards assuming that all sensor nodes are mobile, which has a large hardware cost.
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[0049] In order to better illustrate the technical solution to be protected by the present invention, further description will be made here in conjunction with the drawings and specific implementation methods.
[0050] combine figure 1 with figure 2 , the heterogeneous sensor node mobile scheduling method for optimizing network lifetime and coverage provided by this application involves two types of nodes in the network, one is a dynamic mobile sensor node (which can be moved to any position in the monitoring area The other type is static nodes (nodes with fixed positions), which include static sensor nodes (receive neighbor node information and send request packets to request mobile sensor nodes to move according to the received information, The request packet also includes the coordinate information of the position where the mobile sensor node needs to stay, that is, the expected stay position recorded in the application file) and the Sink node; where the Sink node is used...
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The invention discloses a mobile scheduling method for heterogeneous sensor nodes that optimizes network survival time and coverage. The method is a distributed method, including static sensor nodes, mobile sensor nodes and sink nodes respectively executing different work method. The invention solves the coverage blind area problem caused by the deployment and failure of heterogeneous static sensor nodes, considers the perception radius heterogeneity of the static sensor nodes, and calculates the stay position of the mobile sensor nodes according to the surrounding neighbor sensor node information. According to the position reported by the static sensor nodes, the coverage scheduling model is established, and the scheduling model is solved by using the heuristic solution method to obtain the optimal solution for the staying position of the mobile sensor nodes. In a word, the invention improves the area coverage and the survival number of static sensor nodes. No matter how the number of mobile sensor nodes changes, the invention improves the network survival time and reduces the average energy consumption of static sensor nodes while maintaining the same area coverage.
Description
technical field [0001] The invention relates to the field of mobile wireless sensor networks, in particular to a mobile scheduling method for heterogeneous sensor nodes that optimizes network survival time and coverage. Background technique [0002] In wireless sensor networks (WSNs), the energy constraints of nodes limit the basic functions such as network coverage and lifetime. Network coverage ensures that data collected from sensor nodes is an accurate representation of the entire monitored area. According to different sensing objects, network coverage can be divided into target coverage, fence coverage and area coverage. Among them, the target coverage requires that the sensor nodes can cover all the target points. When the target points are all over the monitoring area and the number is sufficient, the target coverage problem can be transformed into an area coverage problem. Fence coverage requires sensor nodes to completely cover a straight line. When the number o...
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IPC IPC(8): H04W16/18H04W16/22H04W40/20H04W84/18
CPCH04W16/18H04W16/22H04W40/20H04W84/18Y02D30/70
Inventor 陈友荣刘半藤杨海波任条娟祝云凯
Owner ZHEJIANG SHUREN UNIV