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Data collection method of wireless sensor network based on mobile sink

A wireless sensor network and data collection technology, which is applied in the field of data collection of wireless sensor networks, can solve the problems of data loss and other issues, and achieve the effects of reducing data forwarding, saving network energy consumption, and balancing network loads

Inactive Publication Date: 2017-07-28
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] In the practical application of wireless sensor networks, there are certain requirements for real-time performance in many cases. For example, in environmental monitoring, sensors are required to upload detection data periodically. Although time delay is allowed, the length of delay is certain. The data will be invalid after the specified time limit

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  • Data collection method of wireless sensor network based on mobile sink
  • Data collection method of wireless sensor network based on mobile sink
  • Data collection method of wireless sensor network based on mobile sink

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specific Embodiment approach

[0023] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The specific implementation is described as follows:

[0024] First, we randomly select several nodes, and the distribution of nodes is as follows: figure 1 As shown, according to the delay requirement, we assume that the longest moving distance of the mobile sink is l max =15, the white nodes in the figure are common nodes, and the black nodes are the stay points of the mobile sink.

[0025] A data collection method based on a mobile sink-based wireless sensor network, specifically comprising the following steps: as Figure 4 Shown:

[0026] Step 1: The set of all nodes is V={v 1 ,v 2 ,v 3 ,v 4 ,v 5 ,v 6 ,v 7 ,v 8 ,v 9 ,v 10 ,v 11 ,v 12},Such as figure 1 , the candidate set of initial stay points C=V, assuming that the sink’s initial stay position is s 0 , the initial set of stay points is M=...

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Abstract

The invention discloses a data collection method of a wireless sensor network based on a mobile sink. The data collection method of the wireless sensor network based on the mobile sink comprises the steps of firstly selecting retaining points based on prospective earnings and calculating the shortest path which starts from an initial position and passes through all the retaining points by utilizing a simulated annealing algorithm so as to guarantee to return to the initial position within a required time delay range; and then moving the mobile sink at a uniform speed and visiting each retaining point along the shortest path sequentially to collect sensing data of sensor nodes near the retaining points. The data collection method of the wireless sensor network based on the mobile sink can guarantee network time delay, can reduce energy consumption resulted from data forwarding between network nodes and can maximize the data collection amount of the mobile sink.

Description

technical field [0001] The invention belongs to the field of wireless sensor network data collection, in particular to a data collection method of a wireless sensor network based on a mobile sink. Background technique [0002] The sensor network is mainly composed of several sensor nodes and sink nodes. In the traditional network, the sink node is fixed at a specific location. If the network scale is large, the sensor nodes must transmit the sensing data to the sink node through multiple hops. In this data collection model, the sink node needs to forward more data than other nodes, and thus consumes more energy, which will create an "energy hole", and the introduction of a mobile sink can solve this problem very well. [0003] Nowadays, many sensor nodes can obtain energy from the environment, such as solar energy, wind energy, etc., and when the sensor nodes are in the state of collecting sensing data, the energy consumption is very small, and most of the energy consumption...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04W24/10H04W40/10H04W84/18
CPCH04W24/00H04W24/10H04W40/10H04W84/18Y02D30/70
Inventor 叶晓国陈冬初程羽波
Owner NANJING UNIV OF POSTS & TELECOMM
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