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Communication method and communication system

A communication method and a technology of a communication system, which are applied in transmission systems, wireless communications, digital transmission systems, etc., can solve problems such as higher costs, inability to improve network robustness, and increased power consumption, and achieve the effect of improving firmness

Inactive Publication Date: 2021-03-12
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the above-mentioned conventional technology, there is a problem that the robustness of the network cannot be improved without increasing the cost during operation.
[0011] In the network structure of the above-mentioned network type, although robustness can be improved, since data packets are sent and received in order to periodically update the route, the cost during operation becomes high.
In addition, even if it is a method of increasing the radio wave output of each node, the cost during operation will increase due to the increase in power consumption

Method used

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  • Communication method and communication system
  • Communication method and communication system
  • Communication method and communication system

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Experimental program
Comparison scheme
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Embodiment

[0041] figure 1 is a diagram showing the configuration of the network according to this embodiment. Such as figure 1 As shown, the network is a tree-type network structure, which is an example of a communication system. figure 1 The network shown has nodes 100A, 100B, 100C, 100D, 100E, 100F, 100G, 100H, 100I, 100J, 100K, 100L, 100M. Although not shown here, this network may have nodes other than the nodes 100A to 100M. In the following description, the node 100A to the node 100M are collectively described as the node 100 as appropriate.

[0042] Among the nodes 100A to 100M, the nodes 100A, 100C, 100H, and 100L are sink nodes. Node 100A performs wireless communication with nodes 100B, 100C, 100D, and 100E. The node 100C performs wireless communication with the nodes 100A, 100F, 100G, 100H, and 100I. Node 100H performs wireless communication with nodes 100C, 100J, 100K, 100L, and 100M.

[0043] Which node 100 performs wireless communication with which node 100 is set ...

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Abstract

The node (100) according to the present embodiment, when detecting a failure of a subordinate sink node, transmits proximity detection request information to each child node, and receives proximity detection report information from each child node. A node (100) determines an optimal child node to be a substitute for a failed sink node based on nearby probe report information acquired from child nodes. The node (100) sends sink nodeization instruction information to the determined child nodes to make them sink nodes and rebuild the network.

Description

technical field [0001] The present invention relates to communication methods and the like. Background technique [0002] There is a WSN (Wireless Sensor Network: Wireless Sensor Network) that collects various measurement information from each node by arranging many nodes equipped with sensors and exchanging data between each node by wireless communication. For example, the network structure adopted by WSN has tree type and network type. [0003] Figure 22 It is a diagram (1) for explaining an example of a tree-type network structure. The tree-type network structure is oriented to nodes with only weak processing capabilities because the management of parent-child relationship and motivation control are relatively simple. Also, the tree-type network structure may have only one node having child nodes in each layer, or may have a structure having a plurality of nodes having child nodes. In the following description, a node having child nodes is appropriately described as a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/02H04W40/22H04L12/703H04L12/721H04W4/30H04W24/04H04W84/18H04L45/28
CPCH04W4/04H04W40/22H04W84/18H04W24/04H04W40/34H04L45/28H04W4/30
Inventor 大友俊也山下浩一郎铃木贵久山内宏真
Owner FUJITSU LTD