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Whole-network clock synchronization method and a device applied to an LTE rail transit network

A clock synchronization and traffic network technology, applied in the direction of synchronization device, multiplex communication, data exchange network, etc., can solve the problem of large time deviation and achieve the effect of reducing time deviation

Active Publication Date: 2019-01-22
WUHAN HONGXIN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a network-wide clock synchronization method and device applied to the LTE rail transit network, to solve or at least partially solve the technical problem of large time deviation in the prior art, so as to realize the clock synchronization of the whole network technical effect

Method used

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  • Whole-network clock synchronization method and a device applied to an LTE rail transit network
  • Whole-network clock synchronization method and a device applied to an LTE rail transit network
  • Whole-network clock synchronization method and a device applied to an LTE rail transit network

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Embodiment 1

[0058] This embodiment provides a network-wide clock synchronization method applied to an LTE rail transit network. The LTE rail transit network includes a clock source server, a network management platform, a core network, a base station, a vehicle terminal, and a log server.

[0059] Specifically, see figure 2 , is the topology structure diagram of the LTE rail transit network, where the clock source is the clock source server, the signal equipment is connected to the core network and the network management platform through the backbone switch 2, and the vehicle-mounted terminal and the base station are connected to the core network and the network management platform through the backbone switch 1 , the vehicle-mounted terminal is located on the train, which has a vehicle-mounted wireless unit, the first Ethernet interface ETH1 of the network management platform is connected to the backbone switch 1, the second Ethernet interface ETH3 is connected to the backbone switch 2, a...

Embodiment 2

[0120] This embodiment provides a network-wide clock synchronization device applied to an LTE rail transit network. The LTE rail transit network includes a clock source server, a network management platform, a core network, a base station, a vehicle terminal, and a log server. Please refer to Figure 9 , the device consists of:

[0121] Base time reference source module 901, used for using the GPS clock adopted by the clock source server as the base time reference source for NTP clock synchronization of the whole network;

[0122] The first NTP clock synchronization module 902 is used to use the network management platform as the NTP client of the clock source server to perform NTP clock synchronization based on the reference time reference source and the clock source server;

[0123] The second NTP clock synchronization module 903 is used to use the core network and the base station as the NTP client of the network management platform to perform NTP clock synchronization with...

Embodiment 3

[0150] Based on the same inventive concept, this application also provides a kind of computer equipment, please refer to Figure 10 , including a storage 1001, a processor 1002, and a computer program 1003 stored in the memory and operable on the processor. The processor 1002 implements the method in Embodiment 1 when executing the above program.

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Abstract

The invention provides a whole network clock synchronization method and a whole network clock synchronization device applied to an LTE rail traffic network. The method comprises the following steps: aGPS clock adopted by a clock source server is used as a reference time reference source of the whole network NTP clock synchronization. The NTP client uses the network management platform as the clock source server, and synchronizes the NTP clock with the clock source server based on the reference time reference source. The core network, base station and log server are used as the NTP client of the network management platform to synchronize the NTP clock with the network management platform, and the vehicle terminal is used as the NTP client of the network management platform to synchronize the NTP clock with the network management platform. The method of the invention realizes the technical effect of clock synchronization of the whole rail transit network.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a network-wide clock synchronization method and device applied to the LTE rail transit network. By adopting the TDD-LTE technology in the rail transit network environment, each network element is connected through the NTP server / client mode Clock synchronization is performed to realize clock synchronization of the entire network. Background technique [0002] With the development of mobile communication technology, it has been used more and more in the rail transit network. TDD-LTE technology (Time Division Duplexing Long Term Evolution) is a duplex technology in the LTE (Long Term Evolution) standard, which uses LTE technology to carry rail CBTC (Communication Based Train Control System) services , which includes network elements such as LTE base station (eNodeB: EvolvedNode B), LTE core network (EPC: Evolved Packet Core), LTE network management (OMC: Opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W56/00H04L12/24
CPCH04J3/0635H04J3/0638H04L41/069H04W56/001
Inventor 谭韬
Owner WUHAN HONGXIN TECH DEV CO LTD
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