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A multi-antenna switching method for rail transit

A rail transit and multi-antenna technology, applied in wireless communication, radio transmission systems, electrical components, etc., can solve the problems of user concentration and frequent switching, and achieve the effect of improving strength and capacity

Active Publication Date: 2018-04-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of car body shielding, user concentration and frequent switching encountered in high-speed rail communication, the existing technology proposes a high-speed rail-oriented wireless broadband data access network network architecture and a location-based switching method

Method used

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  • A multi-antenna switching method for rail transit
  • A multi-antenna switching method for rail transit

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Embodiment 1

[0045] In this embodiment, the above-mentioned third trigger condition is taken as an example for description. Let r represent the comprehensive weight of the calculated handover success rate and signal strength at the current handover position, let R1 represent the lower bound value of the comprehensive weight (handover success rate and signal strength) for enabling multi-antenna full multiplexing switching, and R2 represent the enable The upper limit value of the comprehensive weight (handover success rate and signal strength) of multi-antenna full diversity handover triggers different handover mechanisms by comparing the comprehensive weight r with the magnitude between R1 and R2. The specific description is as follows:

[0046] Such as figure 2 , after the antenna 1 enters the switching position matching range, it switches between base stations A and B. Before the antenna 1 switches the position, the antenna 1 communicates with the base station A, obtains the switching ...

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Abstract

The invention discloses a multiple antenna switching method for rail traffic. The multiple antenna switching method for the rail traffic includes: when switched power is low or a received signal is weak, starting a multiple antenna diversity technology to remold an information channel, and improving the switched power and the signal reception strength; when the switched power is high or the received signal is strong, starting a high capacity switching mechanism of a multiple antenna multiplexing technology so as to connect a plurality of user into a system. The multiple antenna switching method for the rail traffic can improve the switched power and capacity of the system on the premise of completing quick switching based on position triggering.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a multi-antenna switching method oriented to rail transit. Background technique [0002] At present, the speed of my country's high-speed rail can reach as high as 350km / h, and high-speed trains have become one of the main modes of transportation for people to travel. The demand for real-time, large data volume, and high transmission rate multimedia service data communication in high-speed railways is increasingly obvious, so higher requirements are put forward for the stability and bandwidth of high-speed railway data access systems. [0003] Aiming at the problems of car body shielding, user concentration and frequent switching encountered in high-speed rail communication, the existing technology proposes a high-speed rail-oriented wireless broadband data access network network architecture and a location-based switching method. The method first records the information of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/30
CPCH04B7/0408H04W36/30
Inventor 罗涛孙忆晨李俊涛丁磊李剑峰郝建军尹长川刘丹谱
Owner BEIJING UNIV OF POSTS & TELECOMM