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Wireless network system and relay node

A wireless network system and wireless node technology, applied in the field of wireless network systems, can solve the problems of deterioration of data communication reliability, increase of installation cost of relay nodes, etc.

Inactive Publication Date: 2008-12-31
TOKIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it may increase the installation cost of the relay node
Also, as the number of relay nodes increases, the reliability of data communication may deteriorate

Method used

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  • Wireless network system and relay node
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  • Wireless network system and relay node

Examples

Experimental program
Comparison scheme
Effect test

application example 1

[0035] figure 1 is a diagram explaining the basic structure of a wireless network system according to Application Example 1 of the present invention. figure 1 A case is shown in which two fixed nodes are provided.

[0036] The fixed node 1 comprises a radio communication part 3, wherein the radio communication part 3 comprises an antenna module. Similarly, the fixed node 2 comprises a radio communication part 4, wherein the radio communication part 4 comprises an antenna module. The communicable ranges of the fixed nodes 1 and 2 do not overlap with each other, making it impossible to establish direct wireless communication between them. The mobile body 5 moving between the fixed node 1 and the fixed node 2 includes a relay node 6 mounted thereon. The relay node 6 includes a radio communication section 7 , an information transmission section 8 , and an information recording section 9 . It should be noted that both the fixed node 1 and the fixed node 2 comprise equipment f...

application example 2

[0044] Figure 4A and Figure 4B is a diagram explaining a wireless network system according to Application Example 2 of the present invention. Figure 4A shows the received message status, while the Figure 4B Shows the transmit information status.

[0045] The car 10 , as an example of a mobile body, includes the relay node 61 mounted thereon, and travels along the road 100 at a speed of 60 km / h. When the car 10 enters the communicable range of the fixed node 11 mounted on the pole 20 , communication between the relay node 61 and the fixed node 11 starts. Figure 4A The communication range of the fixed node 11 with the pole 20 as the center and a radius of 1 km is indicated by a dotted line in . The communication between the fixed node 11 and the relay node 61 is completed before the car 10 leaves the communicable range of the fixed node 11 . In this case, the relay node 61 receives destination information indicating that the destination is the fixed node 21 from the fi...

application example 3

[0048] Figure 5A and Figure 5B is a diagram explaining a wireless network system according to Application Example 3 of the present invention. Figure 5A shows the received message status, while the Figure 5B Shows the transmit information status.

[0049] The electric train 40 , as an example of a mobile body, includes the relay node 62 mounted thereon, and travels along the track 200 at a speed of 100 km / h. When the electric train 40 enters the communicable range of the fixed node 12 installed on the pole 80 , the communication between the relay node 62 and the fixed node 12 starts. Figure 5A The communicable range of the fixed node 12 centered on the rod 80 with a radius of 1 km is indicated by a dotted line in . The communication between the fixed node 12 and the relay node 62 is completed before the electric train 40 leaves the communicable range of the fixed node 12 . At this time, the relay node 62 receives destination information indicating that the destination...

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PUM

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Abstract

The invention provides a wireless network system and a relay node. The wireless network system includes a fixed node, a relay node, and a moving body. The fixed node includes a radio communication section for transmitting / receiving information. The relay node includes a radio communication section for transmitting / receiving the information, an information recording section for storing the information received from the fixed node, and an information conveying section for determining a destination of the information. The moving body moves the relay node.

Description

technical field [0001] The invention relates to a wireless network system allowing communication between fixedly installed wireless nodes via wireless relay nodes. Background technique [0002] Wireless networks allow the use of multiple wireless nodes to transmit / receive information. Generally, in a wireless network, wireless relay nodes (hereinafter referred to as "relay nodes") are installed between wireless nodes (hereinafter referred to as "fixed nodes") that are fixedly installed and spaced apart from each other beyond each communicable range. node"), or the fixed nodes are connected to each other by wires, thereby realizing long-distance communication between the fixed nodes installed at locations far away from each other. [0003] Image 6 is a diagram explaining a related art wireless network system using fixed nodes and relay nodes as wireless nodes. [0004] Image 6 The area surrounded by the dashed line represents the communicable range of the wireless node. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/155H04B7/26
CPCH04B7/155H04B7/2606
Inventor 岩崎良
Owner TOKIN CORP
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