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Wireless sensor network communication method based on time division dormancy

A wireless sensor and network communication technology, applied in wireless communication, network topology, sustainable communication technology, etc., can solve problems such as waste of energy, network failure, data loss, etc.

Active Publication Date: 2018-03-23
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The MAC layer of ZigBee competes to select channels through the CSMA / CA mechanism. When there are many terminal nodes, it is very likely that multiple nodes will send data at the same time. Listen, a lot of energy is wasted, and it may also cause data loss, which will cause network failure

Method used

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  • Wireless sensor network communication method based on time division dormancy
  • Wireless sensor network communication method based on time division dormancy
  • Wireless sensor network communication method based on time division dormancy

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Embodiment Construction

[0087] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0088] 1. Nodes join the network

[0089] Such as figure 1 Shown is the initial network access and time-sharing sleep diagram of each node in the present invention. The routing node joins the ZigBee network before each terminal node, and the terminal nodes apply for network access at different time points. Each routing node assigns a 16-digit network short address to the corresponding terminal node and reports it to the sink node. The sink node marks the terminal that first enters the network The node is the No. 1 node, and the numbers of the terminal nodes that will subsequently access the network can be deduced by analogy. When the sink node no longer receives the information of the new network node, wait for a period of time t q , if there is still no new node joining, then it is judged that each node is connected to the network.

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Abstract

The invention discloses a wireless sensor network communication method based on time division dormancy. The method comprises the following steps: establishing a network of aggregation nodes, performing networking application for terminal nodes in sequence after all route nodes are networked, and acquiring 16 bit network short addresses allocated by the route nodes; scheduling all terminal nodes and route nodes to periodically and sequentially enter into dormancy and awakening modes at certain time intervals through the aggregation nodes with dormancy beacon frames, and completing data acquisition and transmission. By adopting the method, channel blocking caused by competitive channels and energy waste caused by continuous monitoring of nodes to acquire idle channels are avoided, and the purposes that the node energy consumption is reduced and the network service life is prolonged are achieved.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, and in particular relates to a wireless sensor network communication method based on time-sharing dormancy. Background technique [0002] At present, a major research direction on ZigBee network energy saving is dormancy. Most of the literature adopts the way that the terminal nodes dormant periodically while the routing nodes and sink nodes continue to work. This is because the aggregation node is the center of the network and has always been powered by an external power supply. It does not need to be dormant, while the routing node acts as a repeater of the network and is responsible for the forwarding of information in the network at all times. If it is dormant, it will lose some The data that needs to be forwarded, so in general, the routing node is also in a non-sleeping working state for a long time. The terminal node can be woken up periodically, send the collected data, wait for a...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W84/18
CPCH04W52/0206H04W52/0219H04W52/0225H04W84/18Y02D30/70
Inventor 严锡君刁宏志于凡潘晓陈孙颖赵姗姗范媛媛
Owner HOHAI UNIV
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