CN207460518U

CN207460518U - A kind of full IP railways STP systems based on LTE technologies

Info

Publication number: CN207460518U
Application number: CN201721542391.5U
Authority: CN
Inventors: 王云峰; 邵忠军; 王勇; 袁仁富; 薄洪光
Original assignee: NANJING TICOM TECH Co Ltd
Current assignee: NANJING TICOM TECH Co Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2018-06-05
Anticipated expiration: 2027-11-17

Abstract

The utility model provides a kind of full IP railways STP systems based on LTE technologies, including the on-vehicle host connected by message transfer system and station host, it is characterised in that：The message transfer system includes CPE, base station, EPC and DSC servers, wherein, CPE uses transparent transmission mode, is connected by Ethernet interface with on-vehicle host, it is connected by LTE network with base station, base station is consecutively connected to EPC, DSC server and station host by Ethernet interface.The utility model replaces GSMR networks, total system IPization using LTE network, and the safety chain between on-vehicle host and station host establishes process simplification into two sections, enhances system reliability.

Description

A kind of full IP railways STP systems based on LTE technologies

Technical field

The utility model is related to radio scheduling locomotive signal system fields, are specifically a kind of full IP iron based on LTE technologies Road STP systems.

Background technology

(Shunting Train Protection, abbreviation STP systems are electrically to collect to radio scheduling locomotive signal system In or computer interlocking station using communication, the interlocking signal of shunting at station is transmitted to shunter, and is being taken charge of Reflect that the signal of service condition in front of car team is shown in machine room；Add using to radio scheduling locomotive signal and station essential information The monitoring to operation safety protection of shunting is realized in work processing by the existing train operation monitoring and recording device of shunter；It It is the control system for ensureing switching locomotive operation safety.Communication therein, past use the narrow-band technologies such as GSM-R, Present LTE broadband wireless communication techniques become the trend of follow-up developments.

Existing STP system frameworks are as shown in Figure 1, including on-vehicle host, station host and message transfer system, wherein believing Ceasing transmission system includes RTM, DSC and GSM-R network.

On-vehicle host：STP Vehicle Controllers on locomotive.Shunter job safety is controlled to realize, is used Receive the radio scheduling locomotive signal of station host transmission, shunting list and for information about, and carry out accordingly plus After work processing, the mobile unit of display and control information is exchanged with existing train operation monitoring and recording device.

Station host：STP background servers mounted on ground control centre.It is to complete to adopt station interlocking information Collection, processing, processing, and ground installation to shunter transmission radio scheduling locomotive signal and for information about.

RTM：It on locomotive, communicates with on-vehicle host, the association that on-vehicle host signal is changed into wireless signal turns control Module.It is responsible for：

1) relation of shaking hands is established with on-vehicle host；

2) safeguarded with the holding of DSC safety chains；

3) by 422 signal of on-vehicle host, it is converted into wireless signal.

DSC：Mounted on ground control centre, with station main-machine communication, it is responsible for：

1) handshake information with station host interacts；

2) load sharing of station host, redundancy backup；

3) safeguarded with the holding of RTM safety chains.

Interface specification：

Vehicle-mounted interface：The interface is the interface between on-vehicle host and RTM, is at present RS422 agreements, RSS422/485 Interface.

Terrestrial interface：The interface is the interface between station host and DSC, is at present ICP/IP protocol, Ethernet connects Mouthful.

The interface of RTM and DSC：The interface is carried at present using GSM-R wireless networks, and upper layer application uses TCP/IP Agreement.

The working-flow is divided as shown in Fig. 2, the safety chain between on-vehicle host and station host establishes process Into three sections：

1) on-vehicle host sends " handshake request " to RTM, establishes secure connection.

2) station host sends " handshake request " toward DSC, and 16 bit address of oneself are informed DSC.

3) RTM and DSC secure connections are successfully established, and on-vehicle host sends data toward station host.Wherein, first, GSMR Attachment, update, attachment removal of network etc. are realized that TCP link establishments between two RTM and DSC safety chains are adopted by GSM-R network With TCP Client/Server modes.

4) after on-vehicle host sends data toward station host, DSC establishes the relation of on-vehicle host and station host, vehicle Station host can send broadcast data toward on-vehicle host.

Problems and disadvantages existing in the prior art：

1st, wireless protocols between vehicle-mounted RTM and DSC, low there are transmission rate using GSM-R mobile radio networks, frequency Utilization rate is low, and technology aging faces the problems such as being substituted, and cannot transmit high band wide data business at present, as the video of yard is supervised The data such as control, monitor and detection, it is impossible to meet the business demand of following rail yard informationization；

2nd, the safety chain between original on-vehicle host and station host establishes process and is divided into three sections, and flow is complicated. Each section of safety chain is established between other sections there are sequencing, as between DSC and ground, the Radio Link of GSM-R needs It initially sets up, followed by safety chain is established between RTM and DSC, the safety chain between last on-vehicle host and RTM, which is shaken hands, to disappear Breath could succeed.The benefit of whole process segmentation be each section of link can independent control, if a certain section of link disconnects, recovery latency It is relatively small, other links are not also had an impact, but each section of safety chain establishes process interface complexity, the work that exploitation is safeguarded Work amount is larger, and simultaneity factor autgmentability is not strong.

Utility model content

The utility model provides a kind of full IP railways STP systems based on LTE technologies to solve problem of the prior art System replaces GSMR networks, total system IPization using LTE network, and the safety chain between on-vehicle host and station host was established Journey is simplified to two sections, enhances system reliability.

The utility model includes the on-vehicle host connected by message transfer system and station host, information transmission System includes CPE（Wireless terminal accessing device）, base station, EPC（4G core networks）With DSC servers, wherein, CPE uses saturating Arq mode, is connected by Ethernet interface with on-vehicle host, is connected by LTE network with base station, base station passes through Ethernet interface It is consecutively connected to EPC, DSC server and station host.

It is further improved, the on-vehicle host, CPE, LTE base station, EPC, DSC and station host support TCP/IP Agreement, wire communication are transmitted by Ethernet, and wireless communication passes through LTE transmission.

Between RTM and DSC, original GSM-R network is replaced using LTE network, RTM is substituted using LTE CPE, using saturating Arq mode.422 interfaces of on-vehicle host and CPE also make Ethernet into, and CPE and LTE network only do transparent transmission function, so original vehicle It carries host and arrives DSC again to RTM again to three Segment Interface Protocols of station host, be transformed into on-vehicle host to DSC again to station host Two Segment Interface Protocols.

The utility model advantageous effect is：

1. replacing original GSM-R wireless carrier networks using LTE wireless networks, frequency usage rate is improved, it is follow-up to expand Malleability is stronger.GSM-R radio bearers are substituted using LTE, meet technology trends, there is larger autgmentability.LTE safety Property, reliability, Qos control etc. than original GSM-R advantageously；

2. the signaling process reconstruct between RTM and DSC, three sections that original safety chain is established are reduced into two sections, As far as possible under the less original frames of change STP and system precondition, using existing LTE matured products or technology, RTM is transformed Into a transmission equipment, the realization difficulty of end side is reduced.

Description of the drawings

Fig. 1 is existing STP system framework figures.

Fig. 2 is existing STP working-flows figure.

Fig. 3 is STP systems provided by the utility model.

Fig. 4 is the full IP implementations of STP systems provided by the utility model.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

STP systems provided by the utility model as shown in figure 3, the utility model full IP implementations as shown in figure 4, should STP systems include the on-vehicle host connected by message transfer system and station host, and the message transfer system includes CPE （Wireless terminal accessing device）, base station, EPC（4G core networks）With DSC servers, wherein, CPE use transparent transmission mode, pass through Ethernet interface is connected with on-vehicle host, is connected by LTE network with base station, base station is consecutively connected to by Ethernet interface EPC, DSC server and station host.

Shorter and shorter with the product life cycle of GSM-R, the STP flat shunting applications of yard are faced with urgently Upgrading pressure, and LTE technologies be as GSM substitute technology have begun the scenes such as rail yard, marshalling yard should With.The utility model combination 1.8G LTE-TDD technologies yard practical application, to original narrowband STP systems into The full IPization transformation of row, makes STP shunt service security reliability higher, data of shunting end-to-end time delay smaller, later stage autgmentability more By force, service access is more flexible, network structure and deployed with devices are apparent, is optimal STP long-term solutions.

There are many utility model concrete application approach, and the above is only the preferred embodiment of the utility model, should It points out, for those skilled in the art, on the premise of the utility model principle is not departed from, can also make Go out several improvement, these improvement also should be regarded as the scope of protection of the utility model.

Claims

1. a kind of full IP railways STP systems based on LTE technologies, including the on-vehicle host connected by message transfer system and vehicle Station host, it is characterised in that：The message transfer system includes CPE, base station, EPC and DSC servers, wherein, CPE is used Transparent transmission mode, is connected by Ethernet interface with on-vehicle host, is connected by LTE network with base station, base station is connect by Ethernet Mouth is consecutively connected to EPC, DSC server and station host.

2. the full IP railways STP systems according to claim 1 based on LTE technologies, it is characterised in that：The vehicle-mounted master Machine, CPE, LTE base station, EPC, DSC and station host support ICP/IP protocol, and wire communication is transmitted by Ethernet, wirelessly Pass through LTE transmission.