CN207460521U - A kind of railway STP systems based on LTE technologies - Google Patents
A kind of railway STP systems based on LTE technologies Download PDFInfo
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- CN207460521U CN207460521U CN201721542842.5U CN201721542842U CN207460521U CN 207460521 U CN207460521 U CN 207460521U CN 201721542842 U CN201721542842 U CN 201721542842U CN 207460521 U CN207460521 U CN 207460521U
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Abstract
The utility model provides a kind of railway STP systems based on LTE technologies, STP systems include being distributed in two launching towers at yard both ends, each transmitting station is equipped with active and standby two RRU, four RRU are connected respectively with active and standby two BBU of near-end, and active and standby two BBU and active and standby 4 RRU maintain two seconds handshake communications once by the management passage of optical fiber；Active and standby two BBU are connected with active and standby EPC and active and standby yard server by controlling and exchanging host.The problems such as the utility model replaces 450M narrowbands wireless network using LTE network, technically upgrades, and solution anti-interference is poor, technology aging.
Description
Technical field
The utility model is related to radio scheduling locomotive signal system fields, are specifically a kind of railway STP based on LTE technologies
System.
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 are existing using narrow-band technologies such as 450M
Become the trend of follow-up developments in LTE broadband wireless communication techniques.
Existing STP systems are generally covered using the data radio station of 450M as station shunting signal, as shown in Figure 1, by
Yard server, signal control device, data radio station composition.Yard server has two, complete STP orders issue with it is vehicle-mounted
Equipment uploads the processing of data, and two station field server redundancy backups keep connection by Handshake Protocol and signal control device,
And determine activestandby state.Signal control device completes mobile unit and the TCP links foundation and STP orders of yard server turn
Hair.Data radio station is the wireless coverage equipment of yard STP systems, and master-slave redundancy provides nothing to mobile unit and yard server
Line communication port.Data radio station generally uses 450MHz channels, and coverage distance is remote.
When STP systems work, active and standby yard server and mobile unit will establish TCP chains with signal control device first
It connects, then per every few seconds handshake packet will be sent out to signal control device, if signal control device can not receive yard clothes for continuous 3 times
The TCP is just linked and removed by the handshake packet of business device and mobile unit.If yard server and continuous 3 receipts of mobile unit are not
To the handshake packet of signal control device, just the TCP is linked and is removed, then applies for link setup again.When TCP links and signal control
After pack receiving and transmitting of shaking hands between equipment, active and standby yard server and mobile unit is normal, signal control device according to STP protocol provide to
Active and standby yard server and mobile unit forwarding STP BPDUs.
Problems and disadvantages existing in the prior art：
1）The data radio station that existing scheme uses does not have customized development, and function is simple, and master-slave redundancy function needs external arbitration
Even human intervention, it is poor that Network status perceives；
2）Existing scheme use narrowband data radio station, frequency efficiency is low, and anti-interference is poor, technology aging face by for
For the problems such as；
3）Existing scheme business interface is that serial ports is low there are transmission rate, cannot transmit high band wide data business at present, such as
The data such as video monitoring, the monitor and detection of yard, it is impossible to meet the business demand of following rail yard informationization.
Utility model content
The utility model provides a kind of railway STP systems based on LTE technologies to solve problem of the prior art,
450M narrowbands wireless network is replaced using LTE network, is technically upgraded, the problems such as it is poor to solve anti-interference, technology aging.
The utility model provides a kind of railway STP systems based on LTE technologies, by EPC（Core net）、BBU（At base band
Manage unit）、RRU（RF processing unit）, control and exchange host and yard server composition, specifically include and be distributed in yard two
Two launching towers at end, each transmitting station are equipped with active and standby two RRU, and four RRU pass through the active and standby of CPRI optical fiber and near-end respectively
Two BBU connections, active and standby two BBU and active and standby 4 RRU maintain two seconds handshake communications once by the management passage of optical fiber；
Active and standby two BBU are connected with active and standby EPC and active and standby yard server by controlling and exchanging host.
The utility model additionally provides a kind of method of work of the railway STP systems based on LTE technologies, including following four
Detection mode：
T1：The real-time monitoring passage of BBU and RRU, is connected, BBU is using wherein using the CPRI optical fiber between BBU and RRU
Management frame monitor the state of RRU in real time, and timing sends handshake；When BBU does not receive holding for primary RRU continuously three times
During hand signal, spare RRU is switched to primary, and normal business datum is switched on the optical fibre channel of original spare RRU,
Transmitting order to lower levels is restarted by failure RRU resets simultaneously.
T2：Control and the real-time sense channel of exchange host and BBU, the ethernet line road being carried between BBU and EPC,
The state of monitoring BBU in real time, and timing sends handshake；Holding for BBU is not received three times continuously when controlling and exchanging host
During hand signal, spare BBU is switched to Ethernet access primary, and that normal business datum is switched to new primary BBU
On, while transmitting order to lower levels is restarted by failure BBU resets.
T3：Control and the real-time sense channel of exchange host and EPC, the ethernet line road being carried between BBU and EPC,
The state of monitoring EPC in real time, and timing sends handshake；Holding for EPC is not received three times continuously when controlling and exchanging host
During hand signal, spare EPC is switched to Ethernet access primary, and that normal business datum is switched to new primary EPC
On, while transmitting order to lower levels is restarted by failure EPC resets.
T4：Control and the real-time sense channel for exchanging host and yard server, are carried between yard server and EPC
Ethernet line road monitors the state of yard server in real time, and timing sends handshake.It is continuous when controlling and exchanging host
When not receiving the handshake of yard server three times, spare yard server is switched to it is primary, and by normal business
Data are switched on the Ethernet access of new primary yard server, while transmitting order to lower levels resets weight by failure yard server
It opens.
Control and exchange host are completed by tetra- kinds of monitoring modes of T1, T2, T3, T4 to yard as the network control center
Server, the status monitoring of EPC, BBU, RRU and control, real-time guarantees LTE network communication reliability.Control and exchange host system
Uniting framework should be simple, does not run complicated operating system, ensures the reliability of work.FPGA is preferred, using pure hardware
Mode realizes the real time monitoring to LTE network.
The utility model advantageous effect is：
1. by controlling and exchanging the flexible networking of host, EPC, BBU and RRU, ensure the totally interconnected, complete superfluous of LTE network
Remaining backup networking.
2. it completes to take yard by the tetra- kinds of monitoring modes of T1, T2, T3, T4 for controlling and exchanging between host and other equipment
Business device, the status monitoring of EPC, BBU, RRU and control, real-time guarantees LTE network communication reliability.
3. replacing original 450MHz narrowband networks using LTE wireless networks, frequency usage rate, subsequent expansion are improved
Property it is stronger, meet technology trends, have larger autgmentability.
4.LTE networks are full IP, high-speed broadband network, and it is single to solve original STP system business, only support low speed narrowband
The problem of business.Allow some leeway for follow-up business extension, upgrading.
Description of the drawings
Fig. 1 is the STP system schematics that the existing data radio station using 450M is covered as station shunting signal.
Fig. 2 is STP system schematics provided by the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The utility model provides a kind of railway STP systems based on LTE technologies, and structure is as shown in Fig. 2, LTE wireless networks
Network is by EPC（Core net）、BBU（Baseband processing unit）And RRU（RF processing unit）Composition.Control and exchange host are completed
The functions such as interconnection, Ethernet exchanging, the network state control of EPC, BBU and yard host.EPC completes terminal networking certification, number
According to functions such as exchanges.BBU completes LTE baseband signals and physical layer signal processing.RRU completes the transmitting-receiving of LTE radio signal, puts
Greatly.The utility model uses two sets of LTE equipment, completes the covering of LTE signals, realizes the full intercommunication of full redundancy of networking.
Application for STP stations using two launching towers, respectively at the both ends of yard, is completed to yard LTE signals
Good covering.Each launching tower is equipped with two RRU, and one primary, and one spare, and primary RRU normal works are completed LTE signals and covered
Lid, spare RRU starts Hot Spare, is rapidly switched to master state when primary RRU failures, shortens the communication failure time as far as possible.
Two BBU, one primary, and spare and four RRU are totally interconnected using optical fiber, primary BBU and primary RRU during normal work
Transceiving data, while active and standby two BBU and active and standby 4 RRU maintain two seconds handshake communications once by the management passage of optical fiber,
Ensure that BBU can monitor RRU working conditions in real time, switch when being failure and prepare.Control and exchange host and core-network side two
The active and standby EPC of platform, two active and standby BBU and two station field server connections provide Ethernet data transceiver channel, the report of these equipment
Text exchanges control.It controls and exchanges host simultaneously and these equipment maintain two seconds handshake communications once, ensure control and exchange
Host can monitor the working condition of EPC, BBU and yard host in real time, switch when being failure and prepare.
The utility model additionally provides a kind of method of work of the railway STP systems based on LTE technologies, including following four
Detection mode：
T1：The real-time monitoring passage of BBU and RRU, is connected, BBU is using wherein using the CPRI optical fiber between BBU and RRU
Management frame monitor the state of RRU in real time, and timing sends handshake；When BBU does not receive holding for primary RRU continuously three times
During hand signal, spare RRU is switched to primary, and normal business datum is switched on the optical fibre channel of original spare RRU,
Transmitting order to lower levels is restarted by failure RRU resets simultaneously.
T2：Control and the real-time sense channel of exchange host and BBU, the ethernet line road being carried between BBU and EPC,
The state of monitoring BBU in real time, and timing sends handshake；Holding for BBU is not received three times continuously when controlling and exchanging host
During hand signal, spare BBU is switched to Ethernet access primary, and that normal business datum is switched to new primary BBU
On, while transmitting order to lower levels is restarted by failure BBU resets.
T3：Control and the real-time sense channel of exchange host and EPC, the ethernet line road being carried between BBU and EPC,
The state of monitoring EPC in real time, and timing sends handshake；Holding for EPC is not received three times continuously when controlling and exchanging host
During hand signal, spare EPC is switched to Ethernet access primary, and that normal business datum is switched to new primary EPC
On, while transmitting order to lower levels is restarted by failure EPC resets.
T4：Control and the real-time sense channel for exchanging host and yard server, are carried between yard server and EPC
Ethernet line road monitors the state of yard server in real time, and timing sends handshake.It is continuous when controlling and exchanging host
When not receiving the handshake of yard server three times, spare yard server is switched to it is primary, and by normal business
Data are switched on the Ethernet access of new primary yard server, while transmitting order to lower levels resets weight by failure yard server
It opens.
Control and exchange host are completed by tetra- kinds of monitoring modes of T1, T2, T3, T4 to yard as the network control center
Server, the status monitoring of EPC, BBU, RRU and control, real-time guarantees LTE network communication reliability.Control and exchange host system
Uniting framework should be simple, does not run complicated operating system, ensures the reliability of work.FPGA is preferred, using pure hardware
Mode realizes the real time monitoring to LTE network.
The utility model is in the STP flat shuntings application of yard, with narrow in the original STP of LTE technical substitutions
Band data radio station.The utility model applies also for the similar related service scene of yard, such as has wireless coverage office
Domain property, scene high to delay requirement, that the features such as reliability requirement is high is covered to wireless network, such as：Station, harbour, airport etc..
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 (2)
1. a kind of railway STP systems based on LTE technologies, it is characterised in that：Two launching towers including being distributed in yard both ends,
Each transmitting station is connected equipped with active and standby two RRU, four RRU with active and standby two BBU of near-end respectively, active and standby two BBU and master
Standby 4 RRU maintain two seconds handshake communications once by the management passage of optical fiber；Active and standby two BBU are by controlling and exchanging master
Machine is connected with active and standby EPC and active and standby yard server.
2. the railway STP systems according to claim 1 based on LTE technologies, it is characterised in that：The BBU and RRU it
Between connected by CPRI optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721542842.5U CN207460521U (en) | 2017-11-17 | 2017-11-17 | A kind of railway STP systems based on LTE technologies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721542842.5U CN207460521U (en) | 2017-11-17 | 2017-11-17 | A kind of railway STP systems based on LTE technologies |
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| CN207460521U true CN207460521U (en) | 2018-06-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847890A (en) * | 2018-06-26 | 2018-11-20 | 陕西红柠铁路有限责任公司 | Signal network topological structure of the digital plane shunting system in complex region |
| CN111935304A (en) * | 2020-08-26 | 2020-11-13 | 天津七一二通信广播股份有限公司 | Locomotive wireless integrated communication equipment with B/S architecture and implementation method thereof |
-
2017
- 2017-11-17 CN CN201721542842.5U patent/CN207460521U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847890A (en) * | 2018-06-26 | 2018-11-20 | 陕西红柠铁路有限责任公司 | Signal network topological structure of the digital plane shunting system in complex region |
| CN111935304A (en) * | 2020-08-26 | 2020-11-13 | 天津七一二通信广播股份有限公司 | Locomotive wireless integrated communication equipment with B/S architecture and implementation method thereof |
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