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High-speed rail LTE handover method based on dual-antenna linkage

A dual-antenna and antenna technology, applied in the field of communication, can solve problems such as lack of self-adaptive handover threshold and affect network quality, achieve better handover effect, increase handover probability, and lower handover threshold

Active Publication Date: 2021-06-08
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has certain risks, and it is very likely that the network quality will be affected due to early handover, and it does not have the adaptive ability to adjust the handover threshold based on the handover situation

Method used

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  • High-speed rail LTE handover method based on dual-antenna linkage
  • High-speed rail LTE handover method based on dual-antenna linkage
  • High-speed rail LTE handover method based on dual-antenna linkage

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing, the inventive method is described in further detail:

[0033] figure 1It is the networking framework required by the LTE switching method based on dual-antenna linkage proposed by the present invention. An LTE access antenna is respectively arranged at the front and rear of the train, and is respectively connected to the corresponding modem interface in the on-board relay gateway. Into the module, the on-board relay gateway uses wireless access equipment to cover Wi-Fi or other wireless signals to the inside of the train for wireless device access, collects the network messages of passengers and trains, encapsulates them into LTE message format, and It is forwarded to the mobile base station through the front / rear antenna to provide Internet services for passengers.

[0034] When the head of the train enters the overlapping handover zone between the base stations, the antenna at the head of the train performs the switchin...

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Abstract

The invention discloses an LTE switching method based on high-speed train dual-antenna linkage, which mainly solves the problem in the prior art that the TD-LTE system under the high-speed railway environment has a low switching success rate and affects network quality due to excessively fast moving speed. The solution is: by deploying LTE antennas and access control units that work independently at the head and tail of the high-speed train, the antenna at the head of the train will switch first, and then use the consistency and certainty of the switching environment at the head and tail of the train to switch the data of the antenna at the head of the train. Synchronize to the rear antenna, according to the evaluation of the switching effect of the front antenna, adjust and optimize the relevant parameters based on the evaluation results when the rear antenna is switched, that is, dynamically adjust the switching process and data of the rear antenna itself before switching, so as to obtain Better switching effect. The invention effectively improves the switching performance of the mobile user in the high-speed motion scene, and optimizes the overall network service quality of the train.

Description

technical field [0001] The invention belongs to the technical field of communication, relates to wireless communication technology, and further relates to the switching of dual-antenna linkage of high-speed rail trains, specifically a high-speed rail LTE switching method based on dual-antenna linkage, which can be used in high-speed rail mobile communication systems. Background technique [0002] With the rapid development of high-speed railways, high-speed railways have become one of the main modes of transportation for people's daily travel. Passengers' demand for mobile networks has also developed from a single service such as traditional text messaging and voice to short video, real-time chat, multimedia, etc. A variety of comprehensive entertainment services have put forward higher and higher requirements for network bandwidth and delay. [0003] The traditional dedicated railway network uses the GSM-R (Global System for Mobile Communications-Railway) wireless communica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/08
CPCH04W36/0055H04W36/0083H04W36/08H04W36/0058
Inventor 田红心祁鹤鹏
Owner XIDIAN UNIV
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