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Wireless communication method and terminal for traffic train

A wireless communication and terminal technology, applied in the field of communication, can solve the problems of high ranging cost, excessive measurement times, affecting the overall efficiency of the wireless communication system, etc., and achieve the effects of reducing costs, reducing the number of measurements, and improving communication efficiency.

Active Publication Date: 2017-03-15
GUANGDONG NUFRONT COMP SYST CHIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Second, the problem of signal measurement before and after the handover of the base station. At present, a unified cell division method is generally used for all users, and the signal strength and signal quality of the source cell and the target cell are compared through multiple measurements to determine whether to trigger the handover. The number of measurements is too high. Many, the cost of ranging is relatively high, which affects the overall efficiency of the wireless communication system;

Method used

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  • Wireless communication method and terminal for traffic train
  • Wireless communication method and terminal for traffic train
  • Wireless communication method and terminal for traffic train

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Experimental program
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Embodiment 1

[0063] Embodiment 1 of the present invention provides a method for wireless communication of traffic trains, such as figure 1 shown, including steps:

[0064] Step S101, after the vehicle-mounted terminal enters the source cell, it performs signaling interaction with the source cell base station and obtains a handover threshold parameter; the handover threshold parameter includes distance information and signal strength information between the handover point and the source cell base station;

[0065] Step S102, the vehicle terminal determines the switching point according to the switching threshold parameter;

[0066] Step S103, when the switching point is reached, the vehicle-mounted terminal performs channel measurement, and switches from the source cell to the target cell.

[0067] Preferably, the type information of the terminal includes: a front terminal or a rear terminal.

Embodiment 2

[0069] Embodiment 2 of the present invention provides a method for wireless communication of traffic trains, including steps:

[0070] Step S101, after the vehicle-mounted terminal enters the source cell, it performs signaling interaction with the source cell base station and obtains a handover threshold parameter; the handover threshold parameter includes distance information and signal strength information between the handover point and the source cell base station;

[0071] in, figure 2 A schematic diagram of a method for obtaining parameters through signaling interaction is given, such as figure 2 As shown, preferably, step S101 specifically includes the following steps:

[0072] Step S1011, the terminal sends a parameter acquisition request to the base station of the source cell, and the parameter acquisition request carries type information and traveling direction information of the terminal;

[0073] Preferably, the type information of the terminal includes: a front...

Embodiment 3

[0092] Figure 4 It is a specific embodiment of a terminal type being a locomotive terminal, and the terminal is installed on the locomotive of a train, such as Figure 4 As shown, B and F represent directional antennas facing two different directions respectively. There are three base stations EBU1, EBU2 and EBU3, and four switching points A, B, C, and D. The terminals are set at the front of the train, points A and C It is the switching point of the head terminal. The direction of train travel is from EBU3 to EBU2 to EBU1.

[0093] Step S401, after the head terminal enters the cell where EBU2 is located after passing through point A, it performs signaling interaction with EBU2 and obtains handover threshold parameters, such as figure 2 As shown, it specifically includes the following steps:

[0094] Step S4011, the front terminal sends a parameter acquisition request to EBU2, the type information of the terminal carried in the parameter acquisition request is the front t...

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Abstract

The invention provides a wireless communication method for a traffic train. The method comprises: performing signalling interaction with a source cell base station after entering a source cell and obtaining a handoff threshold parameter, the handoff threshold parameter including distance information between a handoff point and the source cell base station and signal intensity information; determining the handoff point based on the handoff threshold parameter; performing channel measurement when the handoff point is reached and switching from the source cell to a destination cell. The invention also provides a terminal for a traffic train. The method gives accurately the handoff point according the signal intensities of different terminal users in different directions, making the terminal users complete cell handoff just with one-time measurement in most cases, greatly reducing the number of measurement times, reduces the cost of cell handoff, and improves the communication efficiency of the overall system.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a wireless communication method and terminal for traffic trains. Background technique [0002] As we all know, the urban rail transit system has become one of the main modes of transportation for people's daily travel. With the rapid development of information and communication technology to broadband, the demand for rail transit information construction is also increasing. With the rapid development of mobile communication services, people also hope to enjoy two-way, stable, reliable and high-speed mobile communication services in the process of riding urban rail transit, which puts forward more requirements on the bandwidth and stability of the communication system of urban rail transit systems. high demands. [0003] A high-bandwidth data communication system for urban rail transit systems needs to solve at least the following problems: [0004] First, the attenuation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/10H04W36/00H04W36/08
CPCH04W24/10H04W36/0061H04W36/08H04W36/302H04W36/00837H04W36/326H04W36/0085B61L15/0027H04W36/0088H04W36/30H04W36/32
Inventor 杨之佐刘慎发阎德升鲍东山
Owner GUANGDONG NUFRONT COMP SYST CHIP
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