CN102036423A - Wireless communication system for railway transportation - Google Patents

Abstract

The invention relates to a wireless communication system for railway transportation, which is characterized in that the wireless communication system comprises a mobile terminal, a WiMAX (Worldwide Interoperability for Microwave Access) network entity and at least one application server, wherein the WiMAX network entity comprises at least one base station and a core network device, the base station communicates with the core network device and is used for receiving information sent out by the mobile terminal in a wireless mode and transmitting the information to the core network device, and the core network device is used for receiving the information from the base station and transmitting the information to the application server; the application server is used for extracting service data related to a service from the received information, responding to the service data to generate response information and transmitting the response information to the base station via the core network device; and the base station is also used for receiving the response information and transmitting the response information to the mobile terminal in a wireless mode. By using the WiMAX network for communication, the invention can well meet the communication requirements of various services of mobile trains.

Description

A kind of wireless communication system that is used for railway transportation

Technical field

The present invention relates to a kind of wireless communication system that is used for railway transportation, particularly, relate to the wireless communication system that a kind of use worldwide interoperability for microwave inserts (WiMAX) technology.

Background technology

In railway transportation, in order to improve conevying efficiency, taked technological means such as ton heavy haul train, movable block, visual security monitoring, this fail safe to railway wireless communication, reliability are had higher requirement.The means of communication of the solution heavy haul train transportation of adopting on railway at present has GSM-R (GSM for Railways), and this technology belongs to the communication system of arrowband.GSM-R is special in satisfying the digital wireless communication system that railway applications is developed on the basis of the general GSM of common wireless communication system platform.GSM-R has drawn GSM development result during the last ten years, has developed many functions at the various demand of railway specially again.From the angle of trunking communication, GSM-R is a kind of digital group system, can provide train dispatch radio communication, function of voice communication such as the communication that makes up of trains, emergency communication, maintenance group communication.

But GSM-R is a kind of wireless communication system of arrowband, although in Train Control, emergency communication, control etc. and to be used synchronously, but because the communication bandwidth of this system is very limited, can not satisfy communication requirement, restrict application and the development of fresh information technology in railway wireless communication in the future numerous business of running train.In addition, the base station density that GSM-R uses is big, makes cost higher, and is not based on the IP technology, and the structure more complicated is brought difficulty to technology upgrading in the future, new technology application.

Summary of the invention

In order to address the above problem, the purpose of this invention is to provide a kind of system of broadband wireless communication that can satisfy the various communication requirements of train.

For achieving the above object, the invention provides a kind of wireless communication system that is used for railway transportation, wherein, this wireless communication system comprises: portable terminal; The WiMAX network entity, comprise at least one base station, communicate by letter with core network device in described base station, this base station is used for the information that the described portable terminal of wireless receiving sends, and this information is sent to this core network device, core network device is used to receive the described information from the base station, and this information is sent to application server; And at least one application server, be used for extracting and the professional business datum that is associated from the described information that receives, generate response message in response to this business datum, and this response message is sent to the base station via described core network device; The base station also is used to receive described response message, and this response message is wirelessly transmitted to described portable terminal.

The wireless communication system that is used for railway transportation provided by the invention, adopt the WiMAX network to communicate between portable terminal and the application server, because WiMAX network service broader bandwidth, strong interference immunity and stability are high, the communication requirement that can adapt to the miscellaneous service of running train well, thereby the high efficiency of guarantee railway, reliability.

Description of drawings

Form with accompanying drawing shows some embodiments of the present invention below, should be appreciated that these accompanying drawings are exemplary but not determinate, and in the accompanying drawings, identical Reference numeral is represented same or analogous element, wherein:

Fig. 1 is the structural representation according to the wireless communication system that is used for railway transportation of an embodiment of the invention;

Fig. 2 is the structured flowchart according to the base station of an embodiment of the invention;

Fig. 3 is that wireless communication system application according to an embodiment of the invention is in the schematic diagram of locomotive Synchronization Control;

Fig. 4 is the schematic diagram of communicating by letter in the row tail according to the wireless communication system application of an embodiment of the invention;

Fig. 5 is the row tail communications applications structure chart according to an embodiment of the invention;

Fig. 6 is that a row vehicle-mounted module and the row trailer according to an embodiment of the invention carries the flow chart of setting up unique corresponding relation between the module;

Fig. 7 carries the flow chart that transmits the communication process of train end information between the module according to row vehicle-mounted module of an embodiment of the invention and row trailer;

Fig. 8 carries the flow chart that transmits another communication process of train end information between the module according to row vehicle-mounted module of an embodiment of the invention and row trailer;

Fig. 9 a and Fig. 9 b carry the flow chart of removing unique corresponding relation between the module according to row vehicle-mounted module of an embodiment of the invention and row trailer;

Figure 10 is that wireless communication system application according to an embodiment of the invention is in the structure chart of train movable block; And

Figure 11 shows the rate curve and the safe spacing of train.

Embodiment

With reference to the accompanying drawings embodiments of the present invention are described further.

Fig. 1 is the structural representation according to the wireless communication system that is used for railway transportation of an embodiment of the invention.As shown in Figure 1, according to an embodiment of the invention, provide a kind of wireless communication system that is used for railway transportation, wherein, this wireless communication system comprises: the portable terminal (not shown); The WiMAX network entity, comprise at least one base station 20, communicate by letter with core network device 10 in this base station 20, be used for the information that the wireless receiving portable terminal sends, and this information is sent to this core network device 10, core network device 10 is used to receive the described information from base station 20, and this information is sent to application server 30; And application server 30, from the described information that receives, extract and the professional business datum that is associated, generate response message in response to this business datum, and this response message is sent to base station 20 via described core network device 10; Base station 20 also is used to receive this response message, and this response message is wirelessly transmitted to described portable terminal.

Here, core network device 10 and base station 20 are referred to as the WiMAX network together.Core network device 10 is maincenters of WiMAX network, and it mainly can comprise: switch 11; Access network (ASN) gateway, communicate by letter with this switch 11 via this access network gateway 12 in described base station 20; Aaa server 13 is communicated by letter with this switch 11, is used for the described portable terminal of communicating by letter with core network device 10 is permitted, authorized and charges; And name server 14 (DNS), communicate by letter with this switch 11, be used to identify described portable terminal; Described application server 30 is communicated by letter with this switch 11.

In addition, the core network management equipment can also comprise NM server 15, and this NM server 15 is communicated by letter with this switch 11, is used for resource allocation, fault and performance monitoring to whole network.

The structure of each assembly in the above-described core network device 10 and the basic related protocol of application are conventionally known to one of skill in the art, repeat no more here.Wherein aaa server 13, NM server, DNS and application server 30 are connected with the corresponding port of switch 11, and its connected mode can be that Ethernet connects.

Core network device 10 can be disposed in place.For example, if desired section of railway track transportation section is used this wireless communication system, then core network device 10 can be deployed in the optional position (for example Zhong Jian railway station) between inception point, terminus or inception point and the terminus.

Railway is a long and narrow wire circuit, and therefore, the deployment of base station 20 also should be disposed according to rail track.Wireless communication system can comprise a plurality of base stations 20, and these a plurality of base stations 20 downlines are disposed, and adjacent two base stations 20 keep at a certain distance away on the geographical position.The distance at interval is relevant with the covering power of the base station of selecting for use 20 between adjacent two base stations 20.In general, if adopt HataRural (rural area) wireless channel model, then covering radius reaches 5km at least, and therefore the distance between adjacent two base stations 20 can be near 10km.But in order to guarantee wireless signal strength, can adopt the sub-district to overlap, the coverage that is adjacent two base stations 20 overlaps, therefore according to actual conditions, can be with the distance setting between adjacent two base stations 20 at 5-6km, like this, when portable terminal realizes that the sub-district is switched, can effectively reduce packet loss.Communicate by letter with core network device 10 by wired mode in base station 20.

Further, if the distance between inception point and the terminus is distant, just mean that also base station 20 numbers of deployment increase, some base station 20 freestone heart network equipment 10 also can be far away more.Can use one or more switches in this case, these base stations 20 communicate by switch or group of switches and core network device 10.Communication mode between base station 20 and switch, switch and core network device 10 and the switch can for example be the wire communication mode of optical fiber communication.

Fig. 2 is the structured flowchart according to the base station 20 of an embodiment of the invention.As shown in Figure 2, except the assembly that can find in typical base station 20, base station 20 also comprises processor 22, transceiver 24 and antenna 26.Processor and transceiver communication, transceiver and processor and antenna communication, antenna can be multiple-input and multiple-output (MIMO) antennas, are used to promote the emission and the reception of radio communication.Processor can be configured to communicate by letter (particularly with core network device 10, communicate by letter with switch 11 by the ASN gateway), the information that is associated with business that the portable terminal that reception receives via transceiver and antenna sends, this information is sent to core network device 10, and receive the service response information that core network device 10 sends, be sent to portable terminal via transceiver and antenna.

After having set up the wireless communication system that is used for railway transportation, can apply it in the railway transportation.Therefore, the business that application server 30 can provide has a lot, controls business, movable block business, the communication service of row tail, train dispatch radio communication business, video monitoring service etc. synchronously such as but not limited to locomotive.Below will describe several business wherein in detail.

The locomotive Synchronization Control

Along with the continuous development of railway transportation, in service at the trunk railway electric traction, a locomotive traction does not often satisfy requirements on transport, therefore needs to adopt multi locomotive traction.Adopt multi locomotive traction that the handling capacity of circuit is increased greatly, improve the economic index of railway transportation.When using multi locomotive traction, the present modal operational mode through transport line mode of attaching most importance to is promptly controlled locomotive by main car owner of a driver control and is realized many Synchronization Control from car slave controller car.Locomotive wireless synchronization manipulation technology is one of core technology of multi-locomotive.At present, exploitation has the locomotive synchronous control system.Under the coupled running pattern, main car transfers to each row from car with the locomotive control order in the wireless signal mode by the locomotive synchronous control system, to realize the wireless synchronization control of many locomotives.

The locomotive synchronous control system that trunk railway transportation is at present used mainly adopts the GSM-R network as means of communication.GSM-R belongs to narrow-band communication system, the access rate of 9.6kbp/s is provided, through transport defeated provides Train Control, the communication that makes up of trains, emergency communication, function such as has controlled synchronously although attach most importance to, but because its communication bandwidth is very limited, when unstable situation such as feeble field, handoff failure etc. appear in communication network, data re-transmission will cause bigger transmission delay, real-time is low, can not satisfy the demand of safe train operation and monitoring well, and its technology is comparatively complicated, and is higher in from now on technology upgrading, new technology application facet difficulty.

Fig. 3 be according to an embodiment of the invention based on the schematic diagram of WiMAX wireless communication system application in the locomotive Synchronization Control.With reference to figure 3, in this embodiment, portable terminal can for example be main car vehicular control unit 3 and at least one from car vehicular control unit 4, described main car vehicular control unit 3 and described at least one communicate by base station 20 and core network device 10 (WiMAX network) from car vehicular control unit 4.Described main car vehicular control unit 3 be used for the collection of locomotive double heading run duration come the synchronous control signal of autonomous car and this synchronous control signal is sent to the locomotive marshalling all from car vehicular control unit 4; Described at least one be used for operating from the car Synchronization Control receiving under the situation of described synchronous control signal to carry out from car vehicular control unit 4.

Finish information in order to obtain operation, so that carry out the operation of the next item down locomotive Synchronization Control, under the preferable case, described at least one also be used for finishing after car Synchronization Control operation from car vehicular control unit 4, transmit operation is finished information to described main car vehicular control unit 3.

Main car vehicular control unit 3 and at least one are from adopting the WiMAX network as means of communication between the car vehicular control unit 4.Full name of WiMAX described here is that worldwide interoperability for microwave inserts (Worldwide Interoperability for Microwave Access), be based on the wireless metropolitan area network technology of IEEE 802.16 standards, be the 4th global 3G standard after WCDMA, CDMA2000 and TD-SCDMA, adopted multiple technologies such as OFDMA, MIMO, HARQ, can realize farther transmission range and the more broadband access of high speed is provided.In the trunk railway transportation, adopt WiMAX, under the situation that network goes wrong, can retransmit fast, guaranteed the real-time of Synchronization Control signaling as locomotive double heading operational communications means.

Here be noted that the following application server of mentioning 30 and main car vehicular control unit 3 and described at least one all communicate by letter from communicating by letter between the car vehicular control unit 4 by the WiMAX network, concise and to the point for describing, below no longer particularly point out.

Under the preferable case, locomotive synchronous control system provided by the invention can also comprise main car and at least one row from car, described main car vehicular control unit 3 and described at least one be separately positioned on described main car and described at least one row from car from car vehicular control unit 4.

Vehicular control unit is meant and is arranged on the locomotive, is used for sending or receiving the locomotive synchronous control signal, and according to the control assembly of this synchronous control signal execution to the Synchronization Control of locomotive.In order to realize the coupled running of locomotive, locomotive can carry out the locomotive marshalling according to the actual requirement of operation, master control locomotive in the locomotive marshalling is provided with main car vehicular control unit 3, so that the action of master control locomotive is controlled, slave controller car in the locomotive marshalling is provided with from car vehicular control unit 4, so that the action from car is controlled.

At the locomotive double heading run duration, when main car driver by the joystick on the operation master control locomotive change main turner condition, as main car is quickened, slows down, during control such as braking, main car vehicular control unit 3 is gathered the synchronous control signal of main car by being arranged on transducer on the master control locomotive, that be used to survey the action of joystick and be converted into signal output, and with its send in locomotive marshalling all from car from car vehicular control unit 4, to realize to Synchronization Control from car.In the locomotive marshalling all have been finished from car after the Synchronization Control operation, from car vehicular control unit 4 information is finished in operation and is sent to main car vehicular control unit 3 in the locomotive marshalling from car, thus, main car driver can finish information from main car vehicular control unit 3 read operations, so that carry out the next item down simultaneous operation.

In order to realize the coupled running of locomotive, need be before locomotive operation to master control locomotive and slave controller car register, airduct test and locomotive marshalling.Therefore, according to an embodiment of the invention, described main car vehicular control unit 3 with described at least one communicate by letter with described application server 30 with base station 20 by core network device 10 from car vehicular control unit 4; Described main car vehicular control unit 3 also is used for sending main car log-on message to described application server 30, described at least one also be used for sending from the car log-on message from car vehicular control unit 4 to described application server 30; Whether described application server 30 is used for according to the described main car log-on message that receives and describedly judges main car and describedly register from car from the car log-on message is pairing from the car log-on message, and at main car and described from the car log-on message under the pairing situation about having not yet registered from car, to main car with describedly register and pre-marshalling from car from the car log-on message is pairing, and the main car information of succeeding in registration sent to main car vehicular control unit 3 in the pre-marshalling, to send in the pre-marshalling all from car vehicular control unit 4 from the car information of succeeding in registration, the described main car log-on message that will receive simultaneously and describedly send to the main car vehicular control unit 3 in the pre-marshalling and all are from car vehicular control unit 4 from the car log-on message.

Described application server 30 comprises ground marshalling server and monitoring and query analysis subsystem, described ground marshalling server be meant be exclusively used in the trunk railway transportation, be used to the vehicular control unit in the locomotive synchronous control system that registration and the server of nullifying, organize into groups in advance, organize into groups and separate marshalling, communication link maintenance are provided; Described monitoring and query analysis subsystem are meant and are used for carrying out information interaction, the synchronically controlling information transmittance process being monitored subsystem with statistical query, analysis with described ground marshalling server.

According to an embodiment of the invention, described main car vehicular control unit 3 comprises main car control module 1 and main car communication module 2, and each comprises from car control module 5 with from car communication module 6 from car vehicular control unit 4.Main, be arranged on the master from the car control module, from the car vehicular control unit, for being used for sending and receiving the locomotive synchronous control signal, and according to the assembly of synchronous control signal execution to the Synchronization Control of locomotive, described master, from the car communication module is the assembly that is used to transmit described locomotive synchronous control signal, described master, be connected with described principal and subordinate's car communication module by communication interface from the car control module, described main car vehicular control unit 3 and described at least one send and received signal from car communication module 6 by main car communication module 2 and at least one respectively from car vehicular control unit 4.

According to an embodiment of the invention, to main car with from the registration of car and pre-marshalling flow process be: at first insert main car log-on message and from the car log-on message by main car control module 1 with from car control module 5 by the trainman, described main car log-on message and from the car log-on message comprise this car vehicle, this car license number, main car vehicle, main car license number, from the car vehicle, be provided with and vehicle number from car license number, principal and subordinate.Fill in finish after, send to main car communication module 2 or car communication module 6 by main car control module 1 or from car control module 5 with main car log-on message or from the car log-on message respectively; Be provided with timer in described main car communication module 2 or the car communication module 6, be used for carrying out timing to main car or from the registration process of car; After receiving log-on message, described main car the communication module 2 or at first information that receives is carried out data type from car communication module 6 and judge is under the situation of log-on data in the specified data type, sends the communication link request of setting up to application server 30;

If in registration process, main car communication module 2 or communication disruption has taken place from car communication module 6 and application server 30, then main car communication module 2 or open its timers from car communication module 6 is carried out break period by described timer and is judged.If communication recovery is normal in timer time limit time rating, then proceed registration according to register flow path, and return succeed in registration information by application server 30 to main car communication module 2 or from car communication module 6 in the back of succeeding in registration, main simultaneously car communication module 2 or after receiving the information of succeeding in registration, close its timer from car communication module 6; If communication disruption does not recover normal in timer time limit time rating, perhaps main car communication module 2 or do not receive feedback information from application server 30 from car communication module 6, then main car communication module 2 or send overtime alarm prompt to main car control module 1 or from car control module 5 from car communication module 6, and close its timer; If main car communication module 2 or receive registration failure information from application server 30 from car communication module 6 then sends these registration failure information and closes its timer to main car control module 1 or from car control module 5.Under the preferable case, time limit time rating of described timer is set to 13 seconds.

After setting up communication link with application server 30, described main car communication module 2 sends main car log-on message to application server 30, and main car is registered and pre-marshalling, main simultaneously car communication module 2 also sends main car authentication information to application server 30; After receiving the main car log-on message and authentication information that main car communication module 2 sends, application server 30 judges that described main car authentication information is whether legal and judge to organize into groups in advance whether exist according to the marshalling sequence number in the described main car log-on message; If main car authentication information is illegal and this pre-marshalling exists, then refuses main car is organized into groups in advance, and will refuse pre-marshalling information and be sent to main car control module 1 by main car communication module 2; If main car authentication information is legal and this pre-marshalling does not exist, whether the master and slave car of then inquiring about in this main car log-on message exists at other pre-marshalling internal memories; If the master and slave car in this main car log-on message does not exist in other pre-marshallings, then this main car is organized into groups in advance, and the main car information of succeeding in registration is sent to the interior main car vehicular control unit 3 of this pre-marshalling; If the master and slave car in this main car log-on message exists at other pre-marshalling internal memories, then will refuse pre-marshalling information and be sent to main car control module 1 by described main car communication module 2.

After setting up communication link with application server 30, describedly send from the car log-on message to application server 30 from car communication module 6, with to registering from car and pre-marshalling, also send from the car authentication information from car communication module 6 simultaneously to application server 30; Receive from car communication module 6 send after car log-on message and authentication information, whether application server 30 is judged described legal and judge to organize into groups in advance whether exist according to described marshalling sequence number from the car log-on message from the car authentication information; If illegal and this pre-marshalling does not exist from the car authentication information, then refuse this is organized into groups in advance from car, and will refuse pre-marshalling information by being sent to from car control module 2 from car communication module 6; If legal and should pre-marshalling exist from the car authentication information, then inquire about this from the car log-on message from car information whether with this pre-marshalling in whether organize into groups internal memories in advance from the consistent and master and slave car of car information and exist at other; If described from car information and should pre-marshalling in not existing in other pre-marshallings from the consistent and master and slave car of car information, then this is organized into groups in advance from car, and will send to interior all of this pre-marshalling from car vehicular control unit 4 from the car information of succeeding in registration; If described, then will register error message and be sent to from car control module 2 from car communication module 6 by described from car information and interior the existing at other pre-marshalling internal memories of marshalling in advance from car information inconsistency or master and slave car.

According to technical scheme of the present invention, whether locomotive all finished the judgement of registration in described application server 30 also was used to organize into groups in advance, application server 30 also is used for sending the described main car information and described after car succeeds in registration information that succeeds in registration, judge whether the locomotive in the pre-marshalling all finishes registration, be sent completely the main car information and all after car succeeds in registration information that succeeds in registration, judge that the interior locomotive of marshalling is all finished registration in advance, the main car vehicular control unit in pre-marshalling 3 sends the information of all finishing of registering with all from car vehicular control unit 4 thus; If be not sent completely the main car information and all from the car information that succeeds in registration that succeeds in registration, described application server 30 judges that the locomotive in the pre-marshalling all do not finish registration, then continues to wait for the registration of next column locomotive.

As those skilled in the known, if main car with from car in same marshaling, then main car should be consistent with all air duct pressure values from car, if inconsistent, main car be described then and be not connected from car that perhaps registration process is wrong.For judge in the pre-marshalling main car and from car whether veritably in a row marshalling, need carry out the air duct pressure test to main car with from car.

Therefore, in an embodiment of the invention, described main car control module 1 also be used in pre-marshalling all send the air duct pressure test commands and be used for main car is carried out the air duct pressure test from car vehicular control unit 4.Main car driver can send the air duct pressure test command by main car control module 1 by the control button of operating on the main car, tests to carry out to main car with from the air duct pressure of car.

Described at least one also be used for carrying out the air duct pressure test to pairing from car from car vehicular control unit 4 according to the air duct pressure test command that receives, and the air duct pressure test result is sent to described main car vehicular control unit 3.The process of described air duct pressure test is conventionally known to one of skill in the art.

Under the situation of the master and slave car air duct pressure value unanimity in the air duct pressure test result is pre-marshalling, show that the master and slave car in the pre-marshalling is to be organized in veritably in the row marshalling.Thus, can carry out formal locomotive marshalling to the master and slave car in the pre-marshalling.

According to an embodiment of the invention, described main car control module 1 also is used for sending locomotive marshalling request by main car communication module 2 to described application server 30.Main car driver can send locomotive marshalling request by main car control module 1 by the control button of operating on the main car, to carry out the locomotive marshalling to the main car in the pre-marshalling with from car.Described application server 30 also is used for according to the locomotive that receives marshalling request the master and slave car in the pre-marshalling being carried out the locomotive marshalling, and with marshalling finish information and marshalling relevant information send in this locomotive marshalling main car vehicular control unit 3 and from car vehicular control unit 4.

In train coupled running process, in order to understand the situation of current communication link, find that in time fault is to handle, under the preferable case, described main car communication module 2 and described at least one also be used for sending the communication link detection information to described application server 30 with predetermined period of time respectively from car communication module 6 at the locomotive double heading run duration; Described application server 30 also is used for after receiving described communication link detection information link normal response information sent to respectively described main car communication module 2 and described from car communication module 6.

Described predetermined period of time can be provided with according to the needs of practical operation, and described predetermined period of time is set to the arbitrary value in 3 seconds-10 seconds usually, and under the preferable case, described predetermined period of time is 5 seconds.Can judge that link communication is normal according to the link normal response information that receives.

Described main car communication module 2 and described at least one also be used for sending to described application server 30 from car communication module 6 and remove locomotives marshalling and de-registration request at the locomotive double heading run duration; Described application server 30 also is used for according to the marshalling of the releasing locomotive that receives and de-registration request the main car in this locomotive marshalling and all being carried out from car removes locomotive marshalling and cancellation.When irreclaimable abnormal conditions (for example system in case of system halt, certain communication of locomotive interruption, locomotive outage etc.) appear in the locomotive double heading run duration, main car or can come to send to application server 30 and remove locomotives marshalling and de-registration request by operating main car or the control button from the car from the car driver, application server 30 are carried out to the main car in this locomotive marshalling with from car according to the releasing locomotive marshalling that receives and de-registration request and are removed locomotive marshalling and cancellation.

Temporarily interrupt the situation of (can recover) for communication link in the coupled running process, because after communication link recovers in the section at the fixed time, application server 30 still sends link normal response information to main car communication module 2 with from car communication module 6, does not therefore need to remove locomotive marshalling and cancellation to main car with from car.

Described predetermined amount of time can be provided with according to the needs of practical operation, and described predetermined amount of time is set to the arbitrary value in 3 seconds-10 seconds usually, and under the preferable case, described predetermined amount of time is 5 seconds.

In the application of locomotive Synchronization Control, owing to adopted WiMAX as signal transmission means, technology is simple, can retransmit fast under the situation that network goes wrong, guarantee the real-time of Synchronization Control signaling, can satisfy the demand of safe train operation and monitoring.

The communication of row tail

In the running of China railways train, the wind pressure value of last vehicle of train is the important referential data of safe train operation, and particularly in the heavy haul train of growing up, normally whether the blast information of last vehicle of train will directly influence the braking effect of train.Present train end information transmission system utilizes 400MHz+400KHz radio station that the blast testing equipment of traction locomotive query facility and last vehicle of train is coupled together one to one, thereby the traction locomotive query facility can obtain the measured wind pressure value of blast testing equipment in real time.This train end information transmission system is more effective for short-range train, but for the heavy haul train of growing up, because the head and the distance between the afterbody of train have reached 1.3km or 2.6km even longer, it is complicated and changeable to add in the train travelling process geographical environment, will cause the connection distance of radio station long, and off and on, row tail blast information can not in time be delivered on the traction locomotive, can't take control measure to offer help to the driver.

And can overcoming in the prior art train end information transmission system, wireless communication system provided by the invention can't in time transmit the defective of row tail blast information to traction locomotive for the heavy haul train of growing up.Fig. 4 be according to an embodiment of the invention based on the schematic diagram of WiMAX wireless communication system application in row tail communication; Fig. 5 is the row tail communications applications structure chart according to an embodiment of the invention; Fig. 6 is that a row vehicle-mounted module and the row trailer according to an embodiment of the invention carries the flow chart of setting up unique corresponding relation between the module; Fig. 7 carries the flow chart that transmits the communication process of train end information between the module according to row vehicle-mounted module of an embodiment of the invention and row trailer; Fig. 8 carries the flow chart that transmits another communication process of train end information between the module according to row vehicle-mounted module of an embodiment of the invention and row trailer; And Fig. 9 a and Fig. 9 b are that a row vehicle-mounted module and row trailer according to an embodiment of the invention carries the flow chart of removing unique corresponding relation between the module.

At first the term that hereinafter occurred and the concrete implication of abbreviation are explained as follows:

Engine number: forever indicate the number (containing model and numbering) of traction locomotive, in the WiMAX network, engine number is unique in the system-wide compass of competency.

The train tail host sequence number: indicate the number of train-tail safty guard main frame, in the WiMAX network, the train tail host sequence number is unique in the system-wide compass of competency.

Row tail terminal: the finger is deployed on the locomotive, can send the device that query statement and display column tail Query Result or train tail host are initiatively reported the result to train tail host, abbreviates TET (Terminal for End-of-Train) as.

Locomotive row tail control box: the finger is deployed on the locomotive, querying command and Query Result from row tail terminal are carried out the device that encoding and decoding also send to vehicle-carrying communication module or row tail terminal respectively, abbreviate CBET (Control Box for End-of-Train) as.

The vehicle-carrying communication module: the finger is deployed on the locomotive, and carrying can abbreviate CML (Communication Module on Locomotive) as to the communicator that WiMAX sends query statement or receives train end information from WiMAX.

Train tail host: the finger is deployed on last vehicle of train, to the device that last vehicle of train information is gathered, abbreviates HET (Host for End-of-Train) as.

Row tail communication module: the finger is deployed on last vehicle of train, is connected with train tail host, is used for communicating to transmit the device of train end information with WiMAX, abbreviates CMET (Communication Module for End-of-Train) as.

Ground row endnote volume server: when referring to utilize WiMAX carrying train end information, for onboard subsystem and train tail apparatus provide the server of registration and cancellation, train end information transmission and associated communication system regular maintenance, abbreviate ETS (End-of-Train Server) as.

Fig. 4 be according to an embodiment of the invention based on the schematic diagram of WiMAX wireless communication system application in row tail communication.As shown in Figure 4, in the execution mode that is applied to the communication of row tail, described portable terminal can comprise: be listed as a vehicle-mounted module 100, be positioned at the head of described train; The row trailer carries module 200, is positioned at the afterbody of described train; Application server 30 can for example be a ground row endnote volume server 300, carry module 200 by WiMAX network service with a described row vehicle-mounted module 100 and row trailer, be used for vehicle-mounted module 100 of described row and described row trailer carry module 200 communicate before for both set up this unique corresponding relation between the two, described row trailer carries module 200 and is used to gather train end information, and by the WiMAX network described train end information is sent to a described row vehicle-mounted module 100.

Wherein, described ground row endnote volume server 300 can be positioned at train a certain position along the line, for example can be near the train station.Train can be before travelling be set up a row vehicle-mounted module 100 and row trailer by this ground row endnote volume server 300 and is carried unique corresponding relation between the module 200, can communicate in the train driving process so that these row vehicle-mounted module 100 and row trailer carry module 200.

Wherein, a described row vehicle-mounted module 100 can generate the train end information querying command, and this train end information querying command is sent to the row trailer carries module 200; The row trailer carries the train end information querying command that module 200 receives from a described row vehicle-mounted module 100, generates train end information according to this querying command, and this train end information is sent to a row vehicle-mounted module 100.

Wherein, described row trailer carries module 200 can generate a train end information every predetermined amount of time, and this train end information is sent to a row vehicle-mounted module 100.

Fig. 5 is the structure chart according to the row tail communications applications of an embodiment of the invention.As described in Figure 5, a described row vehicle-mounted module 100 comprises vehicle-carrying communication module 110, locomotive row tail control box 120 and row tail terminal 130, and the three links to each other successively by the CAN bus.Described row trailer carries module 200 and comprises input unit 210, row tail communication module 220 and train tail host 230, wherein row tail communication module 220 and train tail host 230 link to each other by CAN, and described vehicle-carrying communication module 110 and row tail communication module 220 communicate via the WiMAX network.Wherein, described input unit 210 can be infrared affirmation instrument, and described train tail host 230 has infrared interface, and described infrared affirmation instrument can be by infrared interface and input instruction to train tail host 230.Certainly, described infrared affirmation instrument also can be the input equipment that other are suitable for input information, for example keyboard, touch-screen etc.

Carry before module 200 communicates at vehicle-mounted module 100 of described row and described row trailer, and must set up unique corresponding relation.Fig. 6 is that a row vehicle-mounted module and the row trailer according to an embodiment of the invention carries the flow chart of setting up unique corresponding relation between the module.As shown in Figure 6, described row trailer carry module 200 earthward row endnote volume server (ETS) 300 application obtain himself IP address (carrying module 200 at this row trailer self have under the situation of IP address, can omit this operation), and the engine number of being imported according to input unit 210 obtains the IP address of the vehicle-carrying communication module (CML) 110 corresponding with this engine number to ETS 300 applications, store this IP address afterwards, communicate to utilize this an IP address and described row vehicle-mounted module 100.Below in conjunction with above structure, specifically describe a row vehicle-mounted module 100 and carry the process that module 200 is set up unique corresponding relation with described row trailer.

(1) after train tail host (HET) 230 starts, train crews can be imported HET 230 with engine number by input unit 210.

(2) after obtaining engine number, HET 230 initiates network registration via row tail communication module (CMET) 220 to the WiMAX network, and with this HET sequence numbers of HET 230 storages as user name, row endnote volume server (ETS) 300 applications obtain the IP addresses earthward; Wherein, the vehicle-carrying communication module (CML) 110 that is positioned on the locomotive has fixed IP addresses, and this IP address and corresponding engine number thereof all are stored among the ETS 300, and this ETS 300 possesses the function of DHCP.

Wherein, described HET 230 also can have the intrinsic IP address of self, in the case, can omit above-mentioned steps (2).

(3) HET 230 is after the IP address that obtains himself, its engine number of storing is sent to ETS 300 via CMET 220, ETS 300 transforms into this engine number the IP address of corresponding CML 110 and this IP address is sent to CMET 220, CMET 220 issues HET230 with this IP address, HET 230 these IP addresses of storage are to utilize this IP address visit CML 110.

(4) HET 230 as destination address, sends to CML 110 setting up the corresponding relation request via CMET 220 requests with IP address that it was received.

(5) CML 110 receives that HET 230 initiates set up the corresponding relation solicited message after, if it is consistent to set up the engine number of engine number that the corresponding relation solicited message comprises and CML 110 itself, and CML 110 is in and does not connect or connect interrupt status, then sends to HET 230 and sets up the corresponding relation confirmation.

(6) after HET 230 receives this confirmation via CMET 220, if the engine number that confirmation comprises is consistent with the engine number that HET 230 itself stores, HET 230 and CML 110 set up unique corresponding relation, and set up the corresponding relation successful information to CML 110 loopbacks.

(7) after CML 110 receives and sets up the corresponding relation successful information, if it is consistent with this engine number to set up the engine number that the corresponding relation successful information comprises, CML 110 will set up the corresponding relation successful information and send to row tail terminal (TET) 130 by locomotive row tail control box (CBET) 120, state is shown as " connecting " on TET 130, simultaneously the IP address of CML 110 storage HET 230.

By above-mentioned steps (1)～(7), can set up a row vehicle-mounted module 100 and row trailer and carry unique corresponding relation between the module 200, to have only and set up good unique corresponding relation between the two, the two can communicate.

Describe row a vehicle-mounted module 100 and row trailer below with reference to Fig. 7 and carry communication process between the module 200.A described row vehicle-mounted module 100 and row trailer carry set up unique corresponding relation between the module 200 after, in a described row vehicle-mounted module 100, described row tail terminal 130 can generate the train end information querying command, and this train end information querying command is sent to the locomotive row tail control box 120 of a row vehicle-mounted module 100; After the train end information querying command that locomotive row tail control box 120 receives from described row tail terminal 130, this train end information querying command is encoded, and the train end information querying command after will encoding is sent to vehicle-carrying communication module 110; After the train end information querying command that described vehicle-carrying communication module 110 receives from described locomotive row tail control box 120, and the train end information querying command is sent to described row trailer via the WiMAX network carries module 200.Carry in the module 200 at described row trailer, described row tail communication module 220 can receive the train end information querying command from described vehicle-carrying communication module 110, and this train end information querying command is forwarded to train tail host 230; After the train end information querying command that train tail host 230 receives from described row tail communication module 220, generate train end information according to this querying command, and this train end information is sent to row tail communication module 220, via the WiMAX network described train end information is sent to described vehicle-carrying communication module 110 by this row tail communication module 220.Afterwards, the vehicle-carrying communication module 110 in the row vehicle-mounted module 100 can receive via the WiMAX network and carry the train end information of module 200 from described row trailer, and this train end information is sent to locomotive row tail control box 120; The train end information that locomotive row tail control box 120 receives from described vehicle-carrying communication module 110 is decoded to this train end information, and decoded train end information is sent to row tail terminal 130; The train end information that row tail terminal 130 receives from locomotive row tail control box 120, and show this train end information, thus the staff on the train can know this train end information, and operate accordingly according to this train end information.Wherein, except that showing described train end information, described row tail terminal 130 can also other modes be expressed train end information to train crews, for example the mode by voice.

In addition, as shown in Figure 8, described row trailer carries module 200 and also can not send train end information in response to the querying command that is listed as a vehicle-mounted module 100, but generates a train end information automatically and this train end information is sent to a row vehicle-mounted module 100 every a predetermined amount of time.Described train tail host 230 can generate a train end information every a predetermined amount of time, and this train end information is sent to row tail communication module 220; Row tail communication module 220 receives the train end information from described train tail host 230, and this train end information is sent to a described row vehicle-mounted module 100 via the WiMAX network.Alternatively, if the row trailer carries module 200 and receives during described predetermined amount of time from the train end information querying command that is listed as a vehicle-mounted module 100, and in response to this order train end information is sent to a row vehicle-mounted module 100, lifting New count predetermined amount of time in then can sending certainly, and after reaching predetermined amount of time, send next train end information.Wherein, described predetermined amount of time can be set according to actual needs, for example can be 2-3 minute, and the present invention is not limited to this, and the other times scope also is feasible.

In one embodiment, if receiving from described row trailer, a described row vehicle-mounted module 100 do not carry the train end information of module 200 after described predetermined amount of time, then can send train end information querying command to described row trailer and carry module 200, obtain train end information with request.If a row vehicle-mounted module 100 does not receive yet from described row trailer and carries the train end information of module 200 in section sometime subsequently, then remind the train workers by row tail terminal 130.

In case transportation is finished, train can be separated volume, and promptly the train head can separate with last vehicle of train.If writing to each other between CML110 and the HET 230 do not done to remove and handled, only manual releasing physically, then correspondence information each other still is retained among CML 110, the HET 230.When train is organized into groups again, original C ML 110 and HET 230 not necessarily can rearrange together, and the various information of train number also can be done change, CML 110 very big may and other HET 230 between rebulid and get in touch, if old information is not deleted (promptly removing corresponding relation), then this HET 230 can not and 110 of new CML set up correspondence, like this HET 230 and CML 110 have been organized in the train, can not find the other side's information each other, can not set up corresponding relation.Therefore, after each transport task is finished, need to remove a row vehicle-mounted module 100 and row trailer and carry unique corresponding relation between the module 200, so that the row trailer of foundation and these other last vehicle of train carries unique corresponding relation between the module 200 when a row vehicle-mounted module 100 of train head is organized into groups with other last vehicle of train.

Carry the process of removing unique corresponding relation between the module 200 below with reference to Fig. 9 a description releasing row vehicle-mounted module 100 and row trailer.

(1) TET 130 sends to HET 230 via CBET 120 and CML 110 and removes the corresponding relation order.

(2) after HET 230 receives the order of described releasing corresponding relation via CMET 120, if the engine number that the order of releasing corresponding relation comprises is consistent with the engine number that this HET 230 is stored, then HET230 removes corresponding relation, and send to CML 110 via CMET 220 and to remove the corresponding relation confirmations, delete the engine number of storage among the HET 230 and the IP address of CML 110 simultaneously.

(3) after CML 110 receives and removes the corresponding relation confirmation, if the engine number that releasing corresponding relation confirmation comprises is consistent with this engine number, then CML 110 removes corresponding relation, the IP address of the HET 230 that deletion is stored, and via the information of CBET 120 to TET 110 transmissions " corresponding relation is removed ", TET 110 points out train crews " corresponding relation is removed " after receiving this information.

The releasing of described corresponding relation also can be can't help TET 130 and initiated, and is initiated by HET 230, describes the releasing process of this corresponding relation below with reference to Fig. 9 b.

(1) if HET 230 receives the shutdown command of input unit 210, then to initiating to remove the corresponding relation request to CML 110 via CMET220.

(2) after CML 110 receives and removes the corresponding relation request, if the engine number that the request of releasing corresponding relation comprises is consistent with the engine number of storage itself, then delete the IP address of the HET 230 that is stored, and via the information of CBET 120 to TET 130 transmissions " corresponding relation is removed ", TET 130 points out train crews " corresponding relation is removed " after receiving this information.

The process that above-mentioned corresponding relation is removed is to carry out under HET 230 is in the situation of the state that is connected with CML 110, itself be at HET 230 under the situation of the state that does not connect, if receive shutdown command from input unit 210, the then engine number stored of deletion and the IP address of CML 110.

In the foregoing description, described train end information can be blast information.Certainly, but described train end information other information also, battery electric quantity of row tail etc. for example, the present invention is not limited to this.

Wireless communication system based on WiMAX provided by the invention be adopt that the OFDM/OFDMA packet-switch technology makes up based on WiMAX railway wide-band mobile communication network, can accomplish covering uniformly along the line, communication between the locomotive will communicate by this mobile broadband network mode, no matter how long train has, how many distances of traction locomotive and last vehicle of train is, so long as in the wireless signal overlay area, locomotive can be connected by wireless network with train ' s tail device, and is not subjected to the restriction of communication distance.The transmission of information will be with the form of IP packet, the QoS mechanism of network system is guaranteed the high reliability of the information communication that priority is higher, the MIMO (multiple-input, multiple-output) that system adopts, forward error correction (FEC), OFDM insert (OFDMA) and modulate control AMC technology such as (Automatic Modulation Control) automatically, have the ability of extremely strong anti-multipath decline, thereby guarantee the high availability of network system itself.

Movable block

In track traffic,, need to guarantee between train with certain personal distance operation for guaranteeing train operating safety.Be used for the mobile unit and the continual two-way communication in ground control centre (application server 30) of movable block; train uninterruptedly earthward control centre transmit its position; direction and speed; the ground control centre is according to the information calculations from train; determine the safe driving interval of train; and with relevant information (as the leading train position; mobile mandate etc.) pass to train; the control train operation; thereby make train can place oneself in the midst of in the shielded zone; promptly barrier occurs and make after the train brake hard when train-installed device fails or train the place ahead; train can stop in this zone safely, can bump against with any barrier (comprising other trains) scarcely.This security interval can move along with moving of train, so be called movable block.

Present movable block technology based on the WiFi communication technology, on subway, obtained using widely, but can't directly indiscriminately imitate in the railway transportation, main cause is that transmission bandwidth and quality are uncontrollable, the length of subway train is short, in light weight, the skidding distance is shorter, and the short communication distance (needing to be provided with an AP base station 20 about about 200m) of WiFi communication can satisfy the demand of the movable block control of subway; And ten thousand tons of big railway and above heavily loaded goods train length surpass 1200m, the spacing of unit car train is about 500～600m, about 80～the 100km/h of travel speed, therefore, that switch in the district that jumps of base station 20 is frequent, braking distance is much larger than subway, and the communication distance of WiFi communication is shorter in the moving block system that subway adopts, and therefore, far can not satisfy the Heavy-Haul Railway requirements on transport on technology and operating efficiency.

Based on defectives more of the prior art, the present invention proposes the new communication mode that is used for movable block.Figure 10 be according to the embodiment of the present invention based on the wireless communication system application of WiMAX in the structure chart of train movable block.

With reference to Figure 10, in the application of movable block, described portable terminal can comprise vehicular control unit 7 and interface unit 8, described vehicular control unit 7 and described interface unit 8 are provided with ON TRAINS and are connected to each other, described vehicular control unit 7 communicates with described application server 30 by described core network device 10 and base station 20 (WiMAX network), described vehicular control unit 7 is used to gather the real-time speed and the positional information of described train, and this real-time speed and positional information sent to described application server 30, described application server 30 is used for calculating according to the real-time speed that is received and positional information the safe spacing of train.

According to an embodiment of the invention, adopt the WiMAX network between application server 30 and the vehicular control unit 7 as means of communication.Information transfer channel based on the communications platform of WiMAX network is a controlled system, QoS (service quality) has good assurance, and reliable security mechanism is arranged, the reliable transmission of guarantee information, and the transmission range based on the communications platform of WiMAX network can reach several kms, avoided frequent handover, shortened communication delay, in trunk railway transportation, adopt WiMAX as the means of communication between application server 30 and the vehicular control unit 7, guaranteed to be used for the real-time and the reliability of the Control on Communication of movable block.

Described application server 30 is used for the safe spacing that calculates train according to the real-time speed and the positional information of the train that is received.Preferably, after application server 30 receives the real-time speed and positional information of train, calculate the rate curve of train, for example shown in Figure 11, obtain maximum braking distance according to rate curve, be the distance between train current location and the braking point, should add that the predetermined safe protection distance obtains safe spacing by the maximum braking distance then, also can be set at other numerical value as the case may be.

Preferably, described application server 30 can also be used for after calculating the safe spacing of train, sends the control command of train to described vehicular control unit 7 train is carried out remote auto control by the WiMAX network.For example acceleration, the coasting of the control command of this train, slow down and stop etc., its can be by central schedule person according to safe spacing to application server 30 inputs, also can generate automatically according to safe spacing by application server 30.Thereby can not need under the manually operated situation of train operator, carry out remote auto control, guarantee the safe distance of train front and back, make that train can be with higher speed and less personal distance operation by 30 pairs of trains of application server.

Replacedly, described application server 30 can also be used for after calculating the safe spacing of train, sends the safe spacing information of train to described vehicular control unit 7 by the WiMAX network; Described vehicular control unit 7 can also be used to receive this safe spacing information, and sends the control command of train.For example acceleration, the coasting of this control command, slow down and stop etc., it can be imported to described vehicular control unit 7 according to the safe spacing information that receives by the train operator, thereby the operation to train is controlled, guaranteed the safe distance of train front and back, made that train can be with higher speed and less personal distance operation.

Described portable terminal can also comprise that interface unit 8 is provided with ON TRAINS, and is connected with described vehicular control unit 7, is used to realize the access of described vehicular control unit 7 and WiMAX network.This interface unit 8 needs to guarantee that vehicular control unit 7 can reliably insert the WiMAX network under the adverse circumstances of train, therefore should satisfy the requirement of anti-vibration, anti-electromagnetic interference.Preferably, this interface unit 8 can adopt WiMAX 6250 chips.

Below, describe the course of work in conjunction with the accompanying drawings in detail according to the train movable block communication of preferred implementation of the present invention.

At first, vehicular control unit 7 is gathered information such as the real-time speed of described train and positional information, and the information of gathering is sent to application server 30 by the WiMAX network.After application server 30 receives described real-time speed and positional information, calculate the rate curve of train, obtain maximum braking distance, should add that the predetermined safe guard space obtains safe spacing by the maximum braking distance then according to this rate curve.According to an embodiment of the invention, after application server 30 calculates the safe spacing of train, send the control command of train to vehicular control unit 7 by the WiMAX network, the control command of this train is for example quickened, coasting, slow down and stop etc., it can be imported to application server 30 according to safe spacing by central schedule person, also can generate according to safe spacing by application server 30, thereby can not need under the manually operated situation of train operator, carry out remote auto control by 30 pairs of trains of application server, guaranteed the safe distance of train front and back, made that train can be with higher speed and less personal distance operation.According to another implementation of the invention, after application server 30 calculates the safe spacing of train, also can send the information such as safe spacing of train by the WiMAX network to vehicular control unit 7, after vehicular control unit 7 is received this safe spacing information, the train operator can control train according to this safe spacing information, for example control train acceleration, coasting, slow down and stop etc., thereby guaranteed the safe distance before and after the train, made that train can be with higher speed and less personal distance operation.

According to the embodiment of the present invention, with the WiMAX network application in the train moving block system, solved the problem that traditional moving block system communication distance based on the WiFi communication technology is short, can not be applicable to the Heavy-Haul Railway requirements on transport, the information interaction of having guaranteed mobile unit on the train in the Heavy-Haul Railway transportation and ground control centre is unimpeded in real time, makes moving block system can be applied to safely and reliably in the Heavy-Haul Railway transportation.

Though the present invention is disclosed by above-mentioned execution mode, yet above-mentioned execution mode is not that any the technical staff in the technical field of the invention without departing from the spirit and scope of the present invention, should do various changes and modification in order to qualification the present invention.Therefore protection scope of the present invention should be as the criterion with the scope that appended claims was defined.

Claims (19)

1. a wireless communication system that is used for railway transportation is characterized in that, this wireless communication system comprises:

Portable terminal;

The WiMAX network entity comprises

At least one base station (20), communicate by letter with core network device (10) described base station (20), and this base station (20) are used for the information that the described portable terminal of wireless receiving sends, and this information is sent to this core network device (10);

Core network device (10) is used for receiving the described information from base station (20), and this information is sent to application server (30); And

At least one application server (30), be used for extracting and the professional business datum that is associated from the described information that receives, generate response message in response to this business datum, and this response message is sent to base station (20) via described core network device (10);

Described base station (20) also is used to receive described response message, and this response message is wirelessly transmitted to described portable terminal.

2. wireless communication system according to claim 1, wherein, described core network device (10) comprising:

Switch (11), described application server (30) is communicated by letter with this switch (11);

Access network gateway (12), communicate by letter with this switch (11) via this access network gateway (12) described base station (20);

Aaa server (13) is communicated by letter with this switch (11), is used for the described portable terminal of communicating by letter with core network device (10) is permitted, authorized and charges; And

Name server (14) is communicated by letter with this switch (11), is used to identify described portable terminal.

3. wireless communication system according to claim 1, wherein, a plurality of described base stations (20) downline is disposed.

4. wireless communication system according to claim 1, wherein, described portable terminal comprises main car vehicular control unit (3) and at least one from car vehicular control unit (4), described main car vehicular control unit (3) with described at least one communicate by described core network device (10) and base station (20) from car vehicular control unit (4);

Described main car vehicular control unit (3) be used for the collection of locomotive double heading run duration come the synchronous control signal of autonomous car and this synchronous control signal is sent to the locomotive marshalling all from car vehicular control unit (4);

Described at least one be used for operating from the car Synchronization Control receiving under the situation of described synchronous control signal to carry out from car vehicular control unit (4).

5. wireless communication system according to claim 4, wherein, described at least one also be used for finishing describedly after car Synchronization Control operation from car vehicular control unit (4), transmit operation is finished information to described main car vehicular control unit (3).

6. wireless communication system according to claim 5, wherein, described main car vehicular control unit (3) with described at least one communicate by letter with described application server (30) with base station (20) by described core network device (10) from car vehicular control unit (4);

Described main car vehicular control unit (3) also is used for sending main car log-on message to described application server (30), described at least one also be used for sending from the car log-on message from car vehicular control unit (4) to described application server (30);

Whether described application server (30) is used for according to the described main car log-on message that receives and describedly judges main car and describedly register from car from the car log-on message is pairing from the car log-on message, and at main car and described from the car log-on message under the pairing situation about having not yet registered from car, to main car with describedly register and pre-marshalling from car from the car log-on message is pairing, and the main car information of succeeding in registration sent to main car vehicular control unit (3) in the pre-marshalling, to send in the pre-marshalling all from car vehicular control unit (4) from the car information of succeeding in registration, the described main car log-on message that will receive simultaneously and describedly send to the main car vehicular control unit (3) in the pre-marshalling and all are from car vehicular control unit (4) from the car log-on message;

Described application server (30) also is used for sending the described main car information and described after car succeeds in registration information that succeeds in registration, judge that the locomotive in the pre-marshalling all finishes registration, and the main car vehicular control unit (3) in pre-marshalling and all send the information of all finishing of registering from car vehicular control unit (4).

7. wireless communication system according to claim 6, wherein, described main car log-on message and from the car log-on message comprise this car vehicle, this car license number, main car vehicle, main car license number, from the car vehicle, be provided with and vehicle number from car license number, principal and subordinate.

8. wireless communication system according to claim 6, wherein, described main car vehicular control unit (3) also be used in pre-marshalling all send the air duct pressure test command and be used for main car is carried out the air duct pressure test from car vehicular control unit (4);

Described at least one also be used for carrying out the air duct pressure test to pairing from car from car vehicular control unit (4) according to the air duct pressure test command that receives, and the air duct pressure test result is sent to described main car vehicular control unit (3).

9. wireless communication system according to claim 8, wherein, described main car vehicular control unit (3) also is used for sending locomotive marshalling request to described application server (30);

Described application server (30) also is used for according to the locomotive that receives marshalling request the master and slave car in the pre-marshalling being carried out the locomotive marshalling, and with marshalling finish information and marshalling relevant information send in this locomotive marshalling main car vehicular control unit (3) and from car vehicular control unit (4).

10. according to the described wireless communication system of each claim among the claim 5-9, wherein, described main car vehicular control unit (3) comprises main car communication module (2), and each comprises from car communication module (6) from car vehicular control unit (4);

Described main car vehicular control unit (3) and described at least one send and received signal from car communication module (6) by main car communication module (2) and at least one respectively from car vehicular control unit (4);

Described main car communication module (2) and described at least one also be used for sending the communication link detection information to described application server (30) with predetermined period of time respectively from car communication module (6) at the locomotive double heading run duration;

Described application server (30) also be used for after receiving described communication link detection information link normal response information sent to respectively described main car communication module (2) and described at least one from car communication module (6).

11. wireless communication system according to claim 10, wherein, described predetermined period of time is the arbitrary value in 3 seconds-10 seconds.

12. wireless communication system according to claim 10, wherein, described main car communication module (2) and described at least one also be used for send removing locomotive marshalling and de-registration request to described application server (30) from car communication module (6) at the locomotive double heading run duration;

Described application server (30) also is used for according to the marshalling of the releasing locomotive that receives and de-registration request the main car in this locomotive marshalling and all being carried out from car removes locomotive marshalling and cancellation.

13. wireless communication system according to claim 1, wherein:

Described portable terminal comprises:

Be listed as a vehicle-mounted module (100), be positioned at the head of described train;

The row trailer carries module (200), is positioned at the afterbody of described train;

Described application server (30) comprises ground row endnote volume server (300), carrying module (200) with a described row vehicle-mounted module (100) with the row trailer with base station (20) by described core network device (10) communicates by letter, be used for a described row vehicle-mounted module (100) and described row trailer carry module (200) communicate before for both set up this unique corresponding relation between the two

Described row trailer carries module (200) and is used to gather train end information, and by described core network device (10) and base station (20) described train end information is sent to a described row vehicle-mounted module (100).

14. wireless communication system according to claim 13, wherein, described row vehicle-mounted module (100) generates the train end information querying command, and this train end information querying command is sent to the row trailer carries module (200); The row trailer carries the train end information querying command of module (200) reception from a described row vehicle-mounted module (100), generates train end information according to this querying command, and this train end information is sent to a row vehicle-mounted module (100).

15. wireless communication system according to claim 13, wherein, a described row vehicle-mounted module (100) or described row trailer carry module (200) initiates to remove request from unique corresponding relation to the other side.

16. wireless communication system according to claim 1, wherein, described portable terminal comprises vehicular control unit (7) and interface unit (8), described vehicular control unit (7) and described interface unit (8) are provided with ON TRAINS and are connected to each other, and described vehicular control unit (7) communicates with described application server (30) by described core network device (10) and base station (20);

Described vehicular control unit (7) is used to gather the real-time speed and the positional information of described train, and this real-time speed and positional information are sent to described application server (30),

Described application server (30) is used for calculating according to the real-time speed that is received and positional information the safe spacing of train, and

Described interface unit (8) is used to realize the access of described vehicular control unit (7) and base station (20).

17. wireless communication system according to claim 16; wherein; described application server (30) is after receiving described real-time speed and positional information; calculate the rate curve of train; obtain maximum braking distance according to this rate curve, should add that the predetermined safe guard space obtains safe spacing by the maximum braking distance then.

18. according to claim 16 or 17 described wireless communication systems, wherein, described application server (30) also is used for after calculating the safe spacing of train, and the control command that sends train by core network device (10) and base station (20) to described vehicular control unit (7) is to carry out remote auto control to train.

19. according to claim 16 or 17 described wireless communication systems, wherein, described application server (30) also is used for after calculating the safe spacing of train, sends the safe spacing information of train to described vehicular control unit (7) by core network device (10) and base station (20);

Described vehicular control unit (7) also is used to receive this safe spacing information, and sends the control command of train.

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