High-speed railway train comprehensive control network and working method thereof

Abstract

The invention provides a high-speed railway train comprehensive control network and a working method thereof, the network comprises an LTE-R wireless base station LTE eNodeB, an NR wireless base station 5G gNodeB and a core network EPC +, wherein the LTE eNodeB comprises a BBU and an RRU; the 5G gNodeB comprises a CU, a DU and an AAU; the EPC + comprises an MME, an HSS, an SGW and a PGW. Accordingto the invention, the network can serve as an independent network, and also be used for supplementary enhancement of an existing LTE cell. The LTE-NR dual-connection technology can be used for realizing interconnection during non-independent networking of LTE and 5G systems, and the resource utilization rate and the user service experience of the whole wireless network are improved.

Description

technical field [0001] The invention relates to the field of railway communication, in particular to a high-speed railway train comprehensive control network and a working method thereof. Background technique [0002] The digital mobile communication system dedicated to railway communication mainly provides voice communication functions such as wireless train dispatching, marshalling and shunting communication, section maintenance and repair operation communication, emergency communication, tunnel communication, etc. At the same time, it can provide data transmission channels for train automatic control and monitoring information. Traffic command center-dispatching centralized CTC (Centralized Traffic Control) is based on DMIS. Dispatching centralization should have manual and automatic adjustment of train operation plans, automatic drawing of actual operation diagrams, automatic generation, storage and printing of traffic logs, transmission of dispatching orders, and train n...

AI Technical Summary

Problems solved by technology

[0014] 1) The railway train control system based on the GSM-R standard is limited by the working bandwidth and modulation method, and it is difficult to adapt to the new era railway communication system in terms of information transmission rate, spectrum utilization, switching delay, system capacity, and supported business types. development needs

The voice services of the GSM-R system are all carried on the circuit-switched domain (Circuit-Switch, CS) network, the utilization rate of transmission resources is not high, the traffic capacity is limited, and the voice quality is easily disturbed

[0015] 2) The single-mode LTE-R system is based on an all-IP network. In the case of 5MHz bandwidth, available transmission resource blocks (RB, ResourceBlock) and backhaul links (Backhaul, BH) are of poor quality, CTCS-4, which is sensitive to future delays The reliability and robustness of high-speed train control and mission critical service are still not easy to guarantee

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