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

A technology of wireless communication device and channel, applied in the field of wireless communication system and wireless communication device, can solve problems such as interference of wireless train control system, and achieve the effect of suppressing interference

Pending Publication Date: 2021-01-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These other systems can be a large source of interference for wireless train control systems when using these other systems in trains, in buildings along lines, etc.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] figure 1 It is a diagram showing a configuration example of the radio communication system 10 according to Embodiment 1 of the present invention. The wireless communication system 10 includes ground stations 1A, 1B, and 1C, a train 3 , a train operation management device 4 , a wired network 5 , and a radio wave environment monitoring device 7 .

[0038] The ground stations 1A to 1C are wireless communication devices installed along the line 6 in order to realize wireless communication with the train 3 . The ground stations 1A to 1C are installed along the line 6 at intervals of, for example, several tens of meters to several hundreds of meters. When the ground stations 1A to 1C are not distinguished, they are sometimes referred to as the ground station 1 . In addition, in ground station 1, including figure 1 Antenna 101 is shown. Train 3 travels on line 6. In addition, the train 3 includes a boarding station 2 . The on-board station 2 is a wireless communication d...

Embodiment approach 2

[0076] In Embodiment 1, even when the radio wave environment, which is the transmission quality of each frequency channel, changes, the resource allocating unit 107 reassigns resources to cope with the change in the radio wave environment. However, the transmission error rate may temporarily deteriorate during the period from when the radio wave environment changes until the resource allocation unit 107 allocates resources again. In Embodiment 2, the resource allocating unit 107 allocates resources with stronger interference resistance even when the radio wave environment changes from when the transmission quality is measured. Portions different from Embodiment 1 will be described.

[0077] In the second embodiment, the configurations of the wireless communication system 10 , the ground station 1 , the train 3 , and the on-board station 2 are the same as those in the first embodiment. In Embodiment 2, the resource allocation method in the resource allocation unit 107 is diffe...

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PUM

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Abstract

The present invention comprises: a resource allocation unit (107) that carries out resource allocation in which a frequency channel with favorable transmission quality is selected on the basis of thetransmission quality of frequency channels, and as a time slot used for transmission of a data series, a time slot in a frequency hopping pattern corresponding to the selected frequency is preferentially allocated; and a terrestrial control unit (104) that carries out control for transmitting the data series, the control being carried out using the frequency channel and the time slot allocated bythe resource allocation unit (107).

Description

technical field [0001] The present invention relates to a wireless communication device, a wireless communication system, and a wireless communication method for performing wireless communication by frequency hopping. Background technique [0002] In recent years, a wireless train control system that performs wireless communication between a train and a wireless base station installed along a track, and performs train operation control, speed control, etc. based on information transmitted through wireless communication has attracted attention. Compared with the conventional train operation control method using a fixed block section, the wireless train control system does not require a track circuit, so it is more advantageous in terms of introduction cost and maintenance cost. In addition, the wireless train control system can construct flexible block sections that are not limited to fixed sections, so it can increase the running density of trains, which is also advantageous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04B1/7143H04W4/42H04W72/08
CPCH04W4/42H04W72/044H04B1/715H04B2001/7154H04W72/542H04L5/0005H04L5/0044H04W72/0446H04W72/0453H04W72/54
Inventor 铃木和雅
Owner MITSUBISHI ELECTRIC CORP