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Wireless communication device, wireless communication method, and wireless communication system

A wireless communication device, data communication technology, applied in the direction of wireless communication, machine-to-machine/machine-type communication services, electrical components, etc., can solve the problems of not being able to be saved, items being updated, etc.

Active Publication Date: 2018-12-04
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, with the above technique, when an entry needs to be updated, since an upper limit is set on the number of entries in the routing table, frequently used paths may sometimes not be able to be saved due to entry updates
Therefore, in some cases, communication interruption may occur

Method used

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  • Wireless communication device, wireless communication method, and wireless communication system
  • Wireless communication device, wireless communication method, and wireless communication system
  • Wireless communication device, wireless communication method, and wireless communication system

Examples

Experimental program
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no. 1 example

[0028] overall configuration

[0029] figure 1 is a schematic diagram illustrating an example of the overall configuration of the wireless communication system according to the first embodiment. Such as figure 1 As shown, the wireless communication system is a system including nodes, ie, nodes A to H, a gateway (GW) device 1 , and a GW device 2 .

[0030] For example, a management server that collects data from each of the nodes is connected to GW device 1 and GW device 2 . Each of the nodes is a wireless terminal that acquires data from a meter used to read, for example, a value of electric power used in a home, and transmits the data to a management server connected to one of the GW devices. Furthermore, in order to use less memory, an upper limit to the number of entries that can be registered in the routing table is set in each of the nodes.

[0031] Each of the nodes in the wireless communication system learns path information by using an aggressive routing protocol. ...

no. 2 example

[0140] In the above description, a description has been given of the embodiments according to the present invention; however, the embodiments are not limited thereto but can be implemented with various embodiments other than the above-described embodiments. Therefore, another embodiment will be described below.

[0141] Wi-Fi quality

[0142] "Quality" stored in the routing table entry is a value indicating the quality of the path from its own node to the destination node. For example, a value such as received electric field strength may also be used for "quality". Furthermore, reachability, eg the ratio of the number of frames whose responses can be checked to the total number of frames that have been sent to destination A, can also be used.

[0143] usage frequency

[0144] In the above-mentioned embodiments, the description has been given of an example in which the "path timer" which is reset when a path is used and which is reset from the The elapsed time is subtracted...

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PUM

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Abstract

The wireless communication device stores therein each route information on a plurality of destinations and a usage frequency of data communication performed by using the route information in an associated manner. When the wireless communication device receives data whose transmission source is the first destination, the wireless communication device specifies less frequently used route information among stored route information based on the frequency of use. The wireless communication device updates the specified route information to route information whose destination is the first destination.

Description

technical field [0001] The embodiments discussed herein relate to a wireless communication device, a wireless communication method, a wireless communication program, and a wireless communication system. Background technique [0002] There is a conventionally known wireless communication system that collects data from wireless terminals by using a wireless ad hoc network. For example, a system for collecting meter reading data is used by setting a wireless terminal in a meter reading meter that reads electric power used at home. [0003] Since such a wireless terminal is generally set in a fixed manner, the wireless terminal learns path information by using an aggressive routing protocol. Specifically, by periodically sending and receiving control messages between adjacent terminals connected by a single hop, the wireless terminal measures the path quality between nodes, and assigns the path quality to the final destination in descending order of the path quality Multiple r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W84/18H04W88/02H04W4/70
CPCH04W4/70H04W40/24H04W84/18
Inventor 稻生裕一曾根田达也川床诚高冈秀文山田健二
Owner FUJITSU LTD