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High-speed railway 5G-R wireless communication algorithm based on rapid switching model

A 5G-R, fast handover technology, used in wireless communication, vehicle wireless communication services, services based on specific environments, etc.

Inactive Publication Date: 2022-01-07
江善
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Problems solved by technology

5G-R wireless communication faces great challenges due to high speed of user equipment (UE) on trains

Method used

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  • High-speed railway 5G-R wireless communication algorithm based on rapid switching model
  • High-speed railway 5G-R wireless communication algorithm based on rapid switching model
  • High-speed railway 5G-R wireless communication algorithm based on rapid switching model

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Embodiment Construction

[0053] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be further described in detail in conjunction with the accompanying drawings and specific embodiments below.

[0054] Such as figure 1 As shown, a high-speed rail 5G-R wireless communication algorithm based on the fast switching model. The network architecture of the high-speed rail 5G-R mainly includes three parts: access network, bearer network, and core network, and supports signaling, on-board video surveillance, video surveillance, etc. Smooth and stable key communication services, while supporting high data rate connections for passengers, building baseband unit (BBU) or distributed unit (DU) provides large-scale collaborative processing to achieve a large number of real-time connections, the frontline transportation network consists of 5g base station (gNodeB) and BBU / DU a...

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Abstract

The invention discloses a high-speed railway 5G-R wireless communication algorithm based on a rapid switching model, and aims to solve the problem that the key technology of wireless communication needs to be innovated continuously along with flourishing development of high-speed railways, especially the problem of low-delay switching of the fifth generation (5G) in a rapid moving scene causes wide attention. On the basis of analyzing a large amount of actually measured data and the position of user equipment (UE), the invention provides a rapid switching algorithm to solve the problem of long delay of a 5G-R railway high-speed train, by calculating the running speed and direction of the train, selecting a reasonable switching mode and identifying a switching chain of an adjacent cell, the position of the train can be calculated to determine whether UE enters a defined pre-handover identification area, according to values collected in a measurement report, when the weight of a target cell is larger than that of a source cell, a handover command is triggered, and the algorithm has important guiding significance on the design of a 5G-R wireless network, construction of a base station and improvement of communication performance.

Description

technical field [0001] The invention relates to the field of high-speed rail and 5G signal transmission, in particular to a high-speed rail 5G-R wireless communication algorithm based on a fast switching model. Background technique [0002] China has developed 38,000 kilometers of high-speed railways, accounting for more than two-thirds of the world's total. In order to allow athletes, journalists, spectators and service personnel to efficiently travel between Beijing and Zhangjiakou for the 2022 Beijing Winter Olympics, a railway with a speed of 350 kilometers per hour has been built, while high-speed railways are being built around the world. [0003] In recent years, wireless communication for Long Term Evolution for Railway (LTE-R) has been under consideration. However, its maximum bandwidth is only 20MHz, and it can only maintain a data rate of tens of Mbit / s, which cannot meet the requirements of Gb / s level applications. With the rapid deployment of fifth-generation ...

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Application Information

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IPC IPC(8): H04W4/42H04W16/18H04W16/22H04W24/10H04B17/382H04B17/391
CPCH04W4/42H04W16/18H04W16/22H04W24/10H04B17/3911H04B17/382
Inventor 江善
Owner 江善
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