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Method for improving stability of chain structure ZigBee network

A technology of chain structure and stability, applied in data exchange network, error prevention/detection using return channel, digital transmission system, etc., can solve ZigBee network instability, data cannot realize multi-hop transmission, transmission link Breakdown and other problems, to achieve the effect of reducing mutual crosstalk, reducing network congestion and transmission delay, and reducing the number of hops

Inactive Publication Date: 2016-06-29
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

For example: the nodes in the ZigBee network of the chain structure cause node failure due to their own failure, and the transmission link is broken, so the data cannot be transmitted in multiple hops, resulting in the loss of data packets; in the wireless network system of the chain structure, all Nodes share the communication channel and need to compete with each other to obtain the right to send data. When the network load is heavy, data collision between nodes and network congestion will inevitably lead to the loss of data packets
Therefore, the above problems cause the instability and low reliability of the ZigBee network with chain structure.

Method used

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  • Method for improving stability of chain structure ZigBee network
  • Method for improving stability of chain structure ZigBee network
  • Method for improving stability of chain structure ZigBee network

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Embodiment Construction

[0032] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings,

[0033] figure 1 It is the re-entry mechanism in link reconfiguration. The principle is as follows:

[0034] The re-entry mechanism is to make offline nodes rejoin the existing network and repair the broken network. The node offline includes two processes: one is the node offline judgment, and the other is the node network access mechanism. The node first determines whether it is offline; if so, it starts the node to re-enter the network.

[0035] a. Node offline judgment

[0036] The node sends information to the adjacent nodes. If the node sends three times and fails to receive the confirmation information returned by the adjacent nodes, the node will determine that it is offline and will start the node network mechanism.

[0037] b. Node network access mechanism

[0038] The network layer of the node will start the re-entry mechanism, ...

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Abstract

The invention relates to a method for improving stability of a chain structure ZigBee network, and belongs to the technique of a sensor and the technical field of wireless communication. The method comprises link reconstruction, error control, data fusion and routing protocol steps. The link reconstruction step comprises repairing broken parts of the chain network through adoption of a re-networking mechanism and redundant nodes in a dual-link scene, or searching for a replacing path; the error control step comprises improving data transmission reliability through adoption of a response mechanism and a resending mechanism; the data fusion step comprises combining data received by a certain node into a big data packet and sending the integrated data packet to an aggregation node, wherein the data is sent by multiple sub-nodes; and the routing protocol step comprises improving data sending quality through a scheduling mechanism based on sending and receiving time, node subgroups, and dynamic cluster heads, realizing routing maintenance in a network fault. According to the method, the stability of the chain network is improved; and the practical application value of the chain structure ZigBee network is improved.

Description

technical field [0001] The invention belongs to the field of sensor technology and wireless communication technology, in particular to the field of wireless sensor network application technology, and relates to a method for improving the stability of a ZigBee network with a chain structure. Background technique [0002] ZigBee technology is the most widely used wireless communication technology in wireless sensor networks. Widely used in industrial control, home automation, telemetry and remote control, agricultural automation and medical care and other fields. [0003] Public facilities monitoring services in roads, bridges, tunnels and other environments, river environment monitoring, real-time monitoring of transmission lines and other application scenarios all present a linear topology structure. In the transmission process of the chain-like ZigBee network applied to the above scenarios, Data packet loss often occurs, and when the system data packet loss reaches a certa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/709H04L1/18H04L45/28H04L45/243
CPCH04L1/1803H04L1/1806H04L45/24H04L45/28
Inventor 张毅李开宁程威何琰
Owner CHONGQING UNIV OF POSTS & TELECOMM
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