CN102104547A - Method, device and system for transmitting data messages in train control system - Google Patents
Method, device and system for transmitting data messages in train control system Download PDFInfo
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- CN102104547A CN102104547A CN201110044977XA CN201110044977A CN102104547A CN 102104547 A CN102104547 A CN 102104547A CN 201110044977X A CN201110044977X A CN 201110044977XA CN 201110044977 A CN201110044977 A CN 201110044977A CN 102104547 A CN102104547 A CN 102104547A
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Abstract
The invention discloses a method for transmitting data messages in a train control system, comprising the steps: obtaining the priority of a data message to be transmitted by a radio block centre (RBC); marking the priority into a quality of service (QoS) sign of the data message; and transmitting the data message marked with the priority by a transmission network. The embodiment of the invention further provides a corresponding RBC and a train control system. In the invention, a technical scheme for marking the priority of the data message into the QoS sign of the data message is used, so that the data message provided with high priority and transmitted by the RBC can be transmitted preferentially in a transmission network, and vehicle-mounted equipment can receive and process the data message with high priority in time, thus the driving safety of a train is further ensured.
Description
Technical field
The present invention relates to row control communication technical field, be specifically related to method, the Apparatus and system of data message transmission in a kind of train control system.
Background technology
China train control system (China Train Control System, CTCS) comprising: radio block center (Radio Block Center, RBC), railway combined digital mobile communication system (Global Systemfor Mobile Communications for Railway, GSM-R) and mobile unit etc.In train travelling process, it is mutual that RBC carries out lot of data by GSM-R and mobile unit, comprises that communication session begins, confirms front track free time, driving permission, has ready conditions and stop in emergency etc.These data can be divided into general data and high-priority data, and wherein high-priority data is preferentially sent and priority treatment, to guarantee the driving safety of train.For example, when causing danger situation, RBC must send the order of stopping in emergency of high priority immediately to all trains in certain zone of its compass of competency or the mobile unit of particular train, the order of this high priority must preferentially be sent in the message numerous to be sent of RBC, mobile unit then must be after the order of receiving this high priority priority treatment, thereby train is stopped in emergency.
Please refer to Fig. 1, RBC will be according to the classification differentiated treatment of message before sending message to mobile unit: common message will enter the general data formation, wait for and transmit; The emergency message of high priority then transmits by inner high-priority channel.Common message and emergency message that RBC sends all send mobile unit to through the equally matched priority of GSM-R network.After mobile unit is received message, handle according to the classification of message: it is pending that common message will enter general data formation etc.; Emergency message is priority treatment then.General, high-priority data can comprise condition emergency message and unconditional emergency message.
As seen, existing techniques in realizing preferential transmission and the processing of RBC and mobile unit inside to the high priority emergency message.But in the process of Network Transmission, do not guarantee the preferential mechanism that transmits of emergency message.The emergency message of high priority transmits to mobile unit, the transmission networks such as GSM-R of process can not discern its high priority, can not accomplish prioritised transmission, can make mobile unit not receive emergency message in time and the safety traffic that jeopardizes train.Especially along with core net, base station controller (Base Station Controller, BSC), base station (Base Transceiver Station, BTS) IP (Internet Protocol) change and GSM-R are to railway long evolving system (Long Term Evolution for Railway, LTE-R) evolution, the risk of GSM-R message delay, network congestion constantly increases, because of transmission network can not the prioritised transmission high priority emergency data, the easier safety traffic that influences train.
Summary of the invention
The embodiment of the invention provides method, the Apparatus and system of data message transmission in a kind of train control system.
The method of data message transmission in a kind of train control system comprises:
Radio block center RBC obtains the priority of data message to be sent;
With described priority tag in the service quality QoS mark of described data message;
Send the described data message that has identified priority by transmission network.
A kind of radio block center RBC comprises:
Acquiring unit is used to obtain the priority of data message to be sent;
Identify unit is used for priority tag that described acquiring unit the is obtained service quality QoS mark at described data message;
Transmitting element is used for sending the described data message that has identified priority by transmission network.
A kind of train control system comprises:
Radio block center RBC is used to obtain the priority of data message to be sent, and described priority tag in the service quality QoS mark of described data message, and is sent the described data message that has identified priority by transmission network;
Described transmission network, the data message that is used for the prioritised transmission high priority is given mobile unit;
Described mobile unit is used to receive the described data message that identified priority and the data message of the described high priority of priority treatment.
The embodiment of the invention adopts the technical scheme of the priority of sign data message in the service quality QoS mark of data message, the high-priority data message that makes RBC send can obtain prioritised transmission in transmission network, so that mobile unit can in time receive and handle the high-priority data message, thus the driving safety of assurance train.
Description of drawings
Fig. 1 is the schematic diagram of data message transmission in the train control system of prior art;
Fig. 2 is the flow chart of the method for data message transmission in the train control system that provides of the embodiment of the invention;
Fig. 3 is the form of the IP frame head of data message;
Fig. 4 is the schematic diagram of one embodiment of the invention sign priority;
Fig. 5 is the schematic diagram of another embodiment of the present invention sign priority;
Fig. 6 is the schematic diagram that another embodiment of the present invention identifies priority;
Fig. 7 is the schematic diagram of the radio block center RBC that provides of the embodiment of the invention;
Fig. 8 is the schematic diagram of the train control system that provides of the embodiment of the invention.
Embodiment
The embodiment of the invention provides the method for data message transmission in a kind of train control system, employing is at service quality (the Quality of Service of data message, QoS) this data message priority of sign in the mark, the high-priority data message that makes RBC send can obtain prioritised transmission in transmission network, so that mobile unit can in time receive and handle the high-priority data message, thus the driving safety of assurance train.The embodiment of the invention also provides corresponding device thereof and system.Below be elaborated respectively.
Please refer to Fig. 2, the method for data message transmission in the train control system that the embodiment of the invention provides comprises:
101, radio block center RBC obtains the priority of data message to be sent.
Owing to realized in the prior art data message being determined priority and the preferential emergency message that sends high priority, thereby this step can be obtained employing prior art established data priority of messages in RBC inside.RBC can determine the priority of data message to be sent according to the urgency level of data message, for example will need the priority of the preferential data message that sends to be defined as high priority, and the priority of common data message is defined as low priority.
102, with priority tag in the service quality QoS mark of data message.
In this step, RBC by with priority tag in the service quality QoS mark of data message, the high low priority of railway business and service quality Q OS are associated.Thereby utilize the high priority of QOS technology identified emergency message in network transmission process of GSM-R and other data transmission network, thereby realize emergency message high priority transfer end to end.
In one embodiment, RBC can when adding the IP frame head for data message, carry out priority tag to the data message at data message through its network layer.
Please refer to Fig. 3, the IP frame head of data message comprises (this field is used for the host notification subnet will provide to 8 COS for which type of COS for Type of Service, TOS) field.In the present embodiment, can be with the priority tag of data message type of service field at its IP frame head, thus high-priority data and general data are made a distinction, to realize the transmission end to end of high-priority data.
Please refer to Fig. 4, the length of type of service field is 8: its preceding 3 is IP precedence (IPPreference) field, and back to back 4 are used to represent COS TOS, and last 1 is unused bit.Wherein, the IP Preference field of 3 bit lengths can write 3 binary data, and decimalize then comprises 0 to 7 totally 8 numerals, according to existing Internet protocol, the numeral of this field is big more, and the data message of expression transmission is important more, needs prioritised transmission more.Thereby, can be with the priority tag of data message IP precedence field at this 3 bit length, represent the height of priority with the size of numeral, the big more then priority of numeral is high more.Wherein, when data message was divided into promptly with common two kinds, corresponding priorities was respectively high priority and low priority, can use binary data 100,101,110 and 111 expression high priorities, binary data 000,001,010 and 011 expression low priority.For example, can write binary data 111 in the IP of the message of stopping in emergency Preference field, to be labeled as limit priority.
Please refer to Fig. 5, RBC also can utilize 1 last unused bit of type of service field to come the identification data priority of messages in another embodiment, for example, writes at 1 o'clock and represents high priority, writes 0 o'clock sign low priority.
Please refer to Fig. 6, in another execution mode RBC also can be in data message adding purpose IP address, with the different priority of different purpose IP address designations.For example, can set purpose IP address A and represent high priority, purpose IP address B represents high priority; When data message to be sent is high priority, adding purpose IP address A; And when data message to be sent is low priority, adding purpose IP address B.
In other embodiments, (multi-protocol label switching, MPLS), MPLS comes the identification data priority of messages with the multi-protocols switch label can also to add the multi-protocols switch label in described data message.The operation principles of MPLS provides each IP datagram literary composition a mark, the path of determination data message and priority thus.With the router of MPLS compatibility, before packet was transferred to its path, the mark of reading of data message was sent to the router of terminal point according to the priority of mark with packet, thereby can reduces the delay of high-priority data message.
103, send the data message that has identified priority by transmission network.
In this step, because data message has identified priority, and the existing Internet protocol that transmission network adopts, transmission control protocol/internet interconnection protocol (Transmission ControlProtocol/Internet Protocol for example, TCP/IP), can discern the priority of aforesaid way sign, therefore, transmission network just can come data message transmission according to priority, and the data message of prioritised transmission high priority is wherein given mobile unit.Transmission network wherein comprises railway combined digital mobile communication system GSM-R or other ground transmission.
The method of data message transmission in the train control system that the embodiment of the invention provides, employing identifies the technical scheme of this data message priority in the QoS mark of data message IP frame head, the high-priority data message that makes RBC send can obtain prioritised transmission in transmission network, realized the transmission end to end of emergency data message, so that mobile unit can in time receive and handle the data message of high priority, thereby further guarantee the driving safety of train.
Please refer to Fig. 7, the embodiment of the invention also provides a kind of radio block center RBC, comprising:
Acquiring unit 201 is used to obtain the priority of data message to be sent;
Identify unit 202 is used for priority tag that acquiring unit 201 the is obtained service quality QoS mark at data message;
Transmitting element 203 is used for sending the data message that has identified priority by transmission network.
Among the embodiment, identify unit 202 specifically is used for the IP precedence field of three bit lengths that priority tag is comprised at the type of service field of the IP of data message frame head.
Among another embodiment, identify unit 202 specifically is used for the unused bit of described priority tag at the type of service field of the Internet protocol IP frame head of described data message.
Among another embodiment, identify unit 202 specifically is used for adding the purpose IP address that is used to identify priority at described data message.
Among another embodiment, identify unit 202 specifically is used for adding the multi-protocols switch label MPLS that is used to identify priority at described data message.
The RBC that the embodiment of the invention provides, employing identifies the technical scheme of this data message priority in data message service quality QoS mark, make the high-priority data message of transmission can in transmission network, obtain prioritised transmission, realized the transmission end to end of emergency data message, so that mobile unit can in time receive and handle the data message of high priority, thereby further guarantee the driving safety of train.
Please refer to Fig. 8, the embodiment of the invention also provides a kind of train control system, comprising: radio block center RBC200 and transmission network 300, and mobile unit 400; Wherein,
RBC200 is used to obtain the priority of data message to be sent, and this priority tag in the service quality QoS mark of data message, and is sent the data message that has identified priority by transmission network 300;
The train control system that the embodiment of the invention provides, employing identifies the technical scheme of this data message priority in data message service quality QoS mark, the high-priority data message that RBC is sent can obtain prioritised transmission in transmission network, realized the transmission end to end of emergency data message, so that mobile unit can in time receive and handle the high-priority data message, thereby further guarantee the driving safety of train.This row system can be CTCS, and for example CTCS-3 can certainly be other train control system, and this paper does not limit.
More than method, the Apparatus and system of data message transmission in the train control system that the embodiment of the invention provided is described in detail, having used specific case herein sets forth principle of the present invention and execution mode, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof, should not be construed as limitation of the present invention.
Claims (16)
1. the method for data message transmission in the train control system is characterized in that, comprising:
Radio block center RBC obtains the priority of data message to be sent;
With described priority tag in the service quality QoS mark of described data message;
Send the described data message that has identified priority by transmission network.
2. method according to claim 1 is characterized in that, described described priority tag is comprised in the service quality QoS mark of described data message:
With the type of service field of described priority tag at the Internet protocol IP frame head of described data message.
3. method according to claim 2 is characterized in that, described the type of service field of described priority tag at the Internet protocol IP frame head of described data message is specially:
The IP precedence field of three bit lengths that described priority tag is comprised at described type of service field.
4. method according to claim 3 is characterized in that:
Described priority is by a triad numeral, and the size of numeral is represented the height of priority.
5. method according to claim 2 is characterized in that, described the type of service field of described priority tag at the Internet protocol IP frame head of described data message is specially:
With the unused bit of described priority tag at described type of service field,
Described priority is represented by a bit binary number.
6. method according to claim 1 is characterized in that, described described priority tag is comprised in the service quality QoS mark of described data message:
In described data message, add the purpose IP address that is used to identify priority.
7. method according to claim 1 is characterized in that, described described priority tag is comprised in the service quality QoS mark of described data message:
In described data message, add the multi-protocols switch label MPLS that is used to identify priority.
8. method according to claim 1 is characterized in that, the priority that described radio block center RBC obtains data message comprises:
Described RBC determines the priority of described data message according to the urgency level of described data message.
9. method according to claim 7 is characterized in that, described RBC determines that according to the urgency level of described data message the priority of described data message comprises:
Described RBC will need the priority of the preferential data message that sends to be defined as high priority.
10. according to claim 1 or 8 described methods, it is characterized in that: send the described data message that has identified priority by transmission network and be specially:
The data message prioritised transmission that will be designated high priority by transmission network sends to mobile unit.
11. a radio block center RBC is characterized in that, comprising:
Acquiring unit is used to obtain the priority of data message to be sent;
Identify unit is used for priority tag that described acquiring unit the is obtained service quality QoS mark at described data message;
Transmitting element is used for sending the described data message that has identified priority by transmission network.
12. RBC according to claim 11 is characterized in that:
Described identify unit specifically is used for the IP precedence field of three bit lengths that described priority tag is comprised at the type of service field of the Internet protocol IP frame head of described data message.
13. RBC according to claim 11 is characterized in that:
Described identify unit specifically is used for the unused bit of described priority tag at the type of service field of the Internet protocol IP frame head of described data message.
14. RBC according to claim 11 is characterized in that:
Described identify unit specifically is used for adding the purpose IP address that is used to identify priority at described data message.
15. RBC according to claim 11 is characterized in that:
Described identify unit specifically is used for adding the multi-protocols switch label MPLS that is used to identify priority at described data message.
16. a train control system is characterized in that, comprising:
Radio block center RBC is used to obtain the priority of data message to be sent, and described priority tag in the service quality QoS mark of described data message, and is sent the described data message that has identified priority by transmission network;
Described transmission network, the data message that is used for the prioritised transmission high priority is given mobile unit;
Described mobile unit is used to receive the described data message that identified priority and the data message of the described high priority of priority treatment.
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Cited By (15)
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| CN102355496A (en) * | 2011-09-27 | 2012-02-15 | 中国铁道科学研究院电子计算技术研究所 | Train-ground data communication method |
| WO2013012530A3 (en) * | 2011-07-20 | 2013-06-13 | General Electric Company | Method, apparatuses and computer readable medium for allocating different portions of data communication bandwidth to data signals received from sources disposed on board of a rail vehicle |
| CN103188314A (en) * | 2011-12-30 | 2013-07-03 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted message system |
| CN103414656A (en) * | 2013-07-31 | 2013-11-27 | 中国联合网络通信集团有限公司 | Message sending control method and network card |
| CN105338024A (en) * | 2014-07-15 | 2016-02-17 | 成都鼎桥通信技术有限公司 | Data transmission method of CBTC service |
| US9379775B2 (en) | 2009-03-17 | 2016-06-28 | General Electric Company | Data communication system and method |
| US9513630B2 (en) | 2010-11-17 | 2016-12-06 | General Electric Company | Methods and systems for data communications |
| CN106372013A (en) * | 2015-07-24 | 2017-02-01 | 华为技术有限公司 | Remote memory access method, apparatus and system |
| US9637147B2 (en) | 2009-03-17 | 2017-05-02 | General Electronic Company | Data communication system and method |
| CN107659514A (en) * | 2017-09-19 | 2018-02-02 | 深圳乐腾无线科技有限公司 | A kind of accelerated method applied under WiFi |
| US10144440B2 (en) | 2010-11-17 | 2018-12-04 | General Electric Company | Methods and systems for data communications |
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| CN111703385A (en) * | 2020-06-28 | 2020-09-25 | 广州小鹏车联网科技有限公司 | Content interaction method and vehicle |
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| CN113438169A (en) * | 2021-06-30 | 2021-09-24 | 珠海云洲智能科技股份有限公司 | Data scheduling method, electronic equipment and storage medium |
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| US9379775B2 (en) | 2009-03-17 | 2016-06-28 | General Electric Company | Data communication system and method |
| US9637147B2 (en) | 2009-03-17 | 2017-05-02 | General Electronic Company | Data communication system and method |
| CN110072185B (en) * | 2010-11-03 | 2021-06-01 | 安华高科技股份有限公司 | Network management module |
| CN110072185A (en) * | 2010-11-03 | 2019-07-30 | 安华高科技股份有限公司 | Network management module |
| US10144440B2 (en) | 2010-11-17 | 2018-12-04 | General Electric Company | Methods and systems for data communications |
| US9513630B2 (en) | 2010-11-17 | 2016-12-06 | General Electric Company | Methods and systems for data communications |
| WO2013012530A3 (en) * | 2011-07-20 | 2013-06-13 | General Electric Company | Method, apparatuses and computer readable medium for allocating different portions of data communication bandwidth to data signals received from sources disposed on board of a rail vehicle |
| CN102355496A (en) * | 2011-09-27 | 2012-02-15 | 中国铁道科学研究院电子计算技术研究所 | Train-ground data communication method |
| CN103188314A (en) * | 2011-12-30 | 2013-07-03 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted message system |
| CN103414656A (en) * | 2013-07-31 | 2013-11-27 | 中国联合网络通信集团有限公司 | Message sending control method and network card |
| CN103414656B (en) * | 2013-07-31 | 2016-06-22 | 中国联合网络通信集团有限公司 | Message transmission control method and network interface card |
| CN105338024A (en) * | 2014-07-15 | 2016-02-17 | 成都鼎桥通信技术有限公司 | Data transmission method of CBTC service |
| CN106372013A (en) * | 2015-07-24 | 2017-02-01 | 华为技术有限公司 | Remote memory access method, apparatus and system |
| CN107659514A (en) * | 2017-09-19 | 2018-02-02 | 深圳乐腾无线科技有限公司 | A kind of accelerated method applied under WiFi |
| EP3838709A1 (en) * | 2019-12-20 | 2021-06-23 | Siemens Mobility GmbH | Method for transferring telegrams from a central unit to a vehicle and central unit |
| CN111703385A (en) * | 2020-06-28 | 2020-09-25 | 广州小鹏车联网科技有限公司 | Content interaction method and vehicle |
| CN113438169A (en) * | 2021-06-30 | 2021-09-24 | 珠海云洲智能科技股份有限公司 | Data scheduling method, electronic equipment and storage medium |
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Application publication date: 20110622 |