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Hop-based flow adaptive dormancy scheduling method in wireless sensor network

A wireless sensor network and scheduling method technology, applied in the direction of network traffic/resource management, wireless communication, network topology, etc., can solve the problems of inability to set a sleep mechanism, adjustment, and weak flexibility of the sleep mechanism.

Inactive Publication Date: 2014-06-25
江苏中科泛联物联网科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the shortcomings of the dormancy mechanism scheme of the wireless sensor network described in the background technology, the dormancy mechanism of the node is weak, and the dormancy mechanism cannot be set according to the characteristics of the data flow and adaptively adjusted according to the data flow

Method used

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Embodiment Construction

[0017] 1. The specific implementation method for a single sink network is as follows:

[0018] First of all, the concept of super-frame, frame frame, time slot, and number of working time slots Twork needs to be introduced in this solution. The conversion rule is 1 super-frame = N frames = N*M time slots. The specific settings are as follows:

[0019] 1) Time setting: A superframe is divided into N frames, and a frame is divided into M time slots, where N and M are integers greater than or equal to 1. It is represented by a formula that 1 superframe = N frames = N*M time slots.

[0020] 2) Setting of the number of working time slots: Each sensor node sets the number of working time slots Twork according to the number of hops h away from the sink node. At the beginning of each superframe, each sensor node sets the working time according to the number of hops away from the sink node. The number of slots, with K as the threshold, set the number of working time slots Twork as Ti...

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Abstract

The invention discloses a hop-based flow adaptive dormancy scheduling method in a wireless sensor network. The wireless sensor network comprises sink nodes, the distance of a hop is reserved between a sensor node and each sink node, and the work period of the two nodes is one superframe. The method comprises the following steps: setting time; setting number of work time slots; setting a hop threshold K; setting numbers of work time slots Tinner and Touter; and adjusting the K, the Tinner and the Touter. The technical scheme is applicable to both a single-sink network and a multi-sink network. The technical scheme comprises two key technologies that the number of the work time slots of the node is set based on the hop, and the number of the work time slots is adjusted based on data flow. The dormancy mechanism of the node is dynamically adjusted according to the flow characteristic of data transmission in the network, the work time of the node is reduced and the energy is saved while a data collection task is guaranteed, the network overhead is low, and method is simple and easy to realize in a practical wireless sensor network.

Description

technical field [0001] The present invention relates to a wireless sensor network (also called wireless sensor network) protocol, in particular to a flow adaptive sleep scheduling method (also called sleep mechanism) based on the number of hops in the wireless sensor network. Background technique [0002] A wireless sensor network is a wireless network composed of a group of randomly distributed tiny nodes integrated with sensors, data processing units and communication units through self-organization. Its purpose is to cooperatively perceive, collect and process the information of the perceived objects in the geographical area covered by the network, and publish it to the observers. The sink node is a data collection node, which is responsible for summarizing the data sent by the sensor nodes in the network. It is also the control node of the entire sensor network and manages other sensor nodes in the network. [0003] One of the main constraints of wireless sensor network...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/10H04W84/18
CPCY02B60/50Y02D30/70
Inventor 赵壮高雪王钦王江张锦刚
Owner 江苏中科泛联物联网科技股份有限公司