Wireless sensor network node dormant qualification judgment method based on central angle coverage degree
A wireless sensor and network node technology, applied in network planning, network topology, wireless communication, etc., can solve the problems of a large number of sensor nodes, a wide distribution area, and difficulty in supplementing energy for nodes.
Inactive Publication Date: 2013-01-30
BEIHANG UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the large number of sensor nodes, the wide distribution area, and the complex environment of the deployment area, some areas cannot even be reached by personnel, so it will be very difficult to replenish energy for the nodes
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0060] The invention adopts the center angle coverage strategy to obtain the coverage degree of any node in the homogeneous network or the heterogeneous network.
[0061] (1) Dormancy qualification judgment strategy based on center angle coverage in homogeneous network
[0062] Step 1-1, for any node u, get all its neighbor nodes and put them into the neighbor set Nu;
[0063] Step 1-2, traverse all neighbor nodes in the neighbor set Nu of any node u, and extract the distance from any node u within the constraint distance D 初 (0, d 0 ) within the range of all neighbor nodes, put them into the constrained neighbor set CNu;
[0064] where the constraint distance D 初 (0, d 0 ) in the right boundary value d 0 Equal to the perceived radius r, ie D 初 (0,r).
[0065] see figure 1 As shown, in a homogeneous wireless sensor network, the neigh...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a wireless sensor network node dormant qualification judgment method based on central angle coverage degree. The method computes the coverage degree of the neighbor node on the perception region of the local node so as to judge whether the local node is redundant. In the central angle coverage strategy, the constraint distance is adjusted to continuously increase the number of the neighbor nodes, thereby enhancing the coverage degree; and since only the information of partial nodes are utilized, the computation complexity is greatly lowered. In particular, when the network allows for a coverage hole to some degree, compared with the traditional dormant qualification judgment method, the method of the invention can close more redundant nodes to obtain longer network survival time. Meanwhile, the method is also suitable for a heterogeneous network composed of nodes with different perception radii. Therefore, the method has the advantages of high practicality and wide application range.
Description
technical field [0001] The present invention relates to a node dormancy qualification judgment method applied to a wireless sensor network, more particularly, refers to a node dormancy qualification judgment method that can be adjusted according to the distance between nodes and network coverage requirements by using the center angle coverage. Background technique [0002] With the development of MEMS and wireless communication technology, wireless sensor network (WSN) has received more and more attention and research. Wireless sensor network is a wireless ad hoc network composed of a large number of cheap sensor nodes. Each sensor node is composed of computing unit, storage unit, sensing unit and wireless communication unit. The wireless sensor network can be divided into homogeneous network and heterogeneous network according to whether the node sensing radius is the same. [0003] Wireless sensor network is a new type of Ad hoc network. Due to the limitation of cost and...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04W84/18H04L29/08H04W16/30
CPCY02D30/70
Inventor 蒲菊华辜玉唐晓岚侯理想路岩熊璋
Owner BEIHANG UNIV