EP4464125A1 - Subskription bei nebenläufig aktiven vermittlungsvorrichtungen - Google Patents
Subskription bei nebenläufig aktiven vermittlungsvorrichtungenInfo
- Publication number
- EP4464125A1 EP4464125A1 EP23710229.8A EP23710229A EP4464125A1 EP 4464125 A1 EP4464125 A1 EP 4464125A1 EP 23710229 A EP23710229 A EP 23710229A EP 4464125 A1 EP4464125 A1 EP 4464125A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- type
- switching devices
- subscription
- order
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
- H04L67/306—User profiles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/14—Multichannel or multilink protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
Definitions
- the invention relates to a method for transmitting data, a system for carrying out the method, a computer program and a computer-readable medium.
- Switching devices are usually used for the purpose of transmitting data between different sections of a network. These switching devices serve on the one hand as contacts for a communication participant in this network and on the other hand as a kind of translator between differently configured network sections of the network. The latter switching of the data can take place on all layers of the OS I standard model and is not restricted to a particular layer, in particular not to the network layer. Such a switching device is referred to as a "gateway" in the English-speaking world. So far, it has been known to equip a communication participant with several switching devices. However, of these several switching devices, only one is set up to actively transmit data between the different network sections several switching devices meanwhile remain in a passive operating state.
- Process data are, for example, localization data, speed data or other data relating to operation of the communication user as such.
- a type and scope of the process data to be transmitted are defined in the IEC 61375-2-6 standard for the transmission of process data from rail vehicles.
- Such process data are usually transmitted between communication participants by means of a publication and subscription protocol.
- a publication and subscription protocol there is a risk that transmission of the process data will be delayed or interrupted. Consequently, this can have negative effects on the operational sequence and on the operational reliability of the communication subscriber.
- the object of the invention is to specify an improved method for transmitting data.
- the invention is based on the object of specifying a system by means of which the method according to the invention can be carried out.
- the invention is based on the objects of specifying a computer program for carrying out the method and a computer-readable medium.
- data is transmitted concurrently between the communication participant of the first type and the communication participant of the second type by means of a plurality of switching devices of the communication participant of the second type.
- a switching device is to be understood in the present context as a hardware-based gateway which has at least one processor and is set up to transmit data in a network from a first network section of the network to a further network section of the network.
- the gateway is one in the sense of computer science, which can mediate on all layers of the OS I standard model.
- the switching device is a so-called “mobile communication gateway” (MCG) or a so-called “ground communication gateway” (GCG).
- the feature "concurrent" is to be understood in the present context in the sense of computer science in such a way that data is transmitted or received simultaneously by means of various of the several switching devices of a communication participant.
- this does not rule out that in an advantageous embodiment in addition, different data can be transmitted simultaneously by means of at least one of the several switching devices This can be realized, for example, virtually and/or by means of different communication channels.
- An advantageous development provides for the data mentioned to be transmitted concurrently in accordance with a publication and subscription protocol.
- the publication and subscription protocol is to be understood as a data transmission method which is based on a message-oriented middleware system and in which a communication participant publishes data in a network, which is then received by all those other communication participants who have deposited a subscription with the data-publishing communication participant.
- the publish and subscribe protocol is also known as the "publish and subscribe” protocol, which is abbreviated to the "pub-sub” protocol.
- the most prominent example of such a publication and subscription protocol is the standard protocol “OPC UA Pub Sub” from the OPC Foundation.
- the publication and subscription protocol can be implemented using the Message Queuing Telemetry Transport Protocol (MQTT).
- MQTT Message Queuing Telemetry Transport Protocol
- the publication and subscription protocol described above differs from a "request and response” protocol, which is also known as a “request-response” protocol or "client-server” protocol, in that the latter Protocol in each case a receiver is specifically addressed by a transmitter.
- the publication and subscription protocol makes it possible to transmit data when, for example, specified parameters exceed or fall below specified threshold values, specified points in time have been reached or time intervals have expired. Data transmission can thus be reduced to what is absolutely necessary. For example, queries that are not followed by a usable answer can simply be avoided. This enables efficient data transmission.
- a further advantageous development provides for generating a subscription. For this purpose, the first type of communication participant sends a subscription order to one of the several switching devices of the second type of communication participant.
- Such a subscription order has at least instructions regarding a type or an amount of data to be transmitted. Furthermore, the subscription order can have instructions regarding a frequency or a point in time at or after which a transmission of predetermined data is to take place. Furthermore, the subscription order can have further conditions, under the prerequisite of which data transmission is to take place.
- Process data are preferably requested by means of the subscription order. Such process data are data that can be used to characterize an operating sequence and/or an operating state of a device. For example, information relating to the utilization of the device, a speed, a spatial position, a destination or a temperature of the device, in particular of the second type of communication participant, is process data.
- the said subscription order is stored in a database for this purpose.
- the database is to be understood as a database system which is set up for the purpose of electronic data management.
- this database system is designed as a distributed, replicated database system, as a distributed, replicated file system, as a virtual shared memory, which is also referred to as "Virtual Shared Memory” (VSM) in information technology, or as a distributed shared memory, which is known in information technology as “Distributed Shared Memory” (DSM). .
- VSM Virtual Shared Memory
- DSM Distributed Shared Memory
- a subscription record stored in the database is carry selected .
- the selection criterion of the first type can be, for example, a requested amount of data, a number of requested variables, such as process data variables, a frequency of transmission of the data or another parameter specified in the subscription order.
- the selection criterion of the second type is a criterion relating to the utilization of hardware in the switching devices.
- a criterion is, for example, a CPU load, a memory utilization, such as the main memory or an external memory, a number of free communication channels or another criterion relating to the hardware as such, such as an available total memory, a maximum transmission speed or a maximum transmission capacity.
- the selection criterion of the second type is made up of a freely selectable combination of the aforementioned criteria.
- the selected subscription order is accepted and executed by the switching device selected for accepting the subscription order.
- the subscription order is sent to one of the several switching devices of the second type of communication user by means of the first type of communication user.
- each of the switching devices can serve as a contact person for the first type of communication subscriber, independently of the other switching devices.
- the said subscription order stored by means of this one of the several switching devices of the communication subscriber of the second type in a database that is jointly accessible by the several switching devices.
- the database mentioned is in particular the database already described above. This allows all switching devices to access a central database quickly.
- an advantageous development provides that the data requested by means of the subscription order are published using that switching device of the plurality of switching devices through which the subscription order was accepted.
- the subscription order is clearly assigned to a switching device, and if this switching device fails, the subscription order can immediately be taken over by another switching device. In this way, operational reliability can be increased.
- an advantageous embodiment provides that the selection criterion of the second type is used to select that switching device of the multiple switching devices for the purpose of accepting a subscription order whose hardware utilization is the lowest compared to a hardware utilization of the other switching devices. This makes it possible to distribute the workload as evenly as possible over the multiple switching devices.
- An advantageous embodiment provides that the selection criterion of the second type is weighted in such a way that acceptance of subscription orders is restricted to predetermined switching devices. This makes it possible to easily group the multiple switching devices. It is also conceivable that a distinction is made between those switching devices that process subscription orders and those that are entrusted with other tasks. It is also conceivable that the mediation ment devices are grouped in such a way that some of these switching devices either do not process any subscription orders at all or only take over subscription orders from this failed switching device in the event of a failure of another switching device.
- subscription orders be assigned to at least some of the multiple switching devices in accordance with a predetermined sequence.
- Such a principle is also known as a "round robin" method.
- a method for the purpose of changing a subscription order accepted by one of the switching devices.
- the communication subscriber of the first type sends a change order relating to a change to a predetermined subscription order to any one of the plurality of switching devices of the communication subscriber of the second type.
- This change order is stored in a database.
- the database mentioned is the database described above.
- the change order is selected from the database and executed by means of that switching device through which the subscription order to be changed was accepted. This makes it possible to send the change order to any one of the several switching devices and then to assign the change order with little effort.
- This method also enables subscription orders to be changed quickly and reliably.
- a method for the purpose of deleting a subscription is proposed.
- a deletion order regarding the deletion of a specific subscription order is sent to any one of the several switching devices of the communication participant. mers second kind sent .
- This deletion order is stored in a database.
- This database is in particular the database already described above.
- the deletion order is selected from the database and the predetermined subscription order is deleted by means of that switching device through which the subscription order to be deleted was accepted.
- each of the several switching devices can be addressed, regardless of whether they are entrusted with executing the subscription order to be deleted or not. Accordingly, a rapid and reliable deletion of subscription orders is made possible.
- each switching device of the multiple switching devices of the communication subscriber of the second type is monitored by at least one other of the multiple switching devices for a defective operating state. This makes it possible to provide a high level of operational reliability and fail-safety for the data transmission method.
- An advantageous embodiment variant provides that information regarding the operating state is output at regular time intervals by means of each of the multiple switching devices of the communication subscriber of the second type. At least one of the other switching devices of the plurality of switching devices is used to check whether the said information has been output. In this way, the switching devices can be monitored efficiently and reliably for a faulty operating state.
- a first advantageous embodiment provides that information regarding the operating status is stored in a database at regular time intervals by means of each of the several switching devices of the communication subscriber of the second type. It is conceivable here that it the database mentioned is the database described in detail above. At least one of the other switching devices then checks whether the stored information is present.
- At least one of the other switching devices of the plurality of switching devices is used to evaluate the said information, if it was output.
- a faulty operating state of a switching device can also be detected if the switching device does not fail completely, but only works incorrectly.
- such a malfunction of a switching device can be detected by means of a self-test of a switching device known to those skilled in the art.
- An advantageous embodiment variant provides that the at least one subscription order of the failed switching device is accepted and executed by at least one switching device selected from the remaining of the plurality of switching devices based on the selection criterion of the second type.
- a workload can be continue to be evenly distributed to the remaining of the plurality of switching devices.
- the method according to the invention is carried out by means of the system according to the invention.
- the system for carrying out the method has a first-type communication participant and a second-type communication participant.
- the communication subscriber of the second type has a number of switching devices.
- the several switching devices mentioned are set up to carry out the method according to the invention.
- the switching devices mentioned are in particular the switching devices already described in connection with the method according to the invention.
- Such a system makes it possible to use available resources efficiently and evenly.
- availability and failsafety of the system can be improved in this way.
- the first type of communication participant is in the form of a stationary communication participant.
- the stationary communication subscriber is preferably a land-based system with a fixed location.
- the communication participant of the second type is in the form of a mobile communication participant.
- the mobile communication user is preferably a vehicle.
- the vehicle is particularly preferably a rail-mounted vehicle.
- an advantageous development of the system provides that the multiple switching devices of the communication subscriber of the second type are set up to To transmit data between a local area network and a mobile radio network.
- the effects of poor reception from a switching device on a transmission of data can be compensated for by good reception from other switching devices.
- Such a difference between the reception of a switching device and other rental devices can arise, for example, through the use of different network providers.
- the invention provides a computer-readable medium, which has instructions by means of which the system according to the invention is prompted to carry out the method according to the invention.
- the computer-readable medium can be, for example, a CD-ROM, a DVD, a USB or flash memory or an intangible medium such as a data stream and/or a data carrier signal.
- Show it : 1 shows an exemplary embodiment of the system according to the invention for carrying out an example of the method according to the invention in a schematic representation and an illustration of the example of the method according to the invention;
- FIG. 2 shows a further schematic illustration of the example of the method according to the invention.
- FIG. 1 shows an exemplary embodiment of a system 10 according to the invention in a schematic representation. Furthermore, FIG. 1 illustrates an example of a method 100 according to the invention.
- the system 10 has, for example, a stationary communication subscriber 12, which is preferably a land-based system. Furthermore, the system 10 has, for example, a rail-bound vehicle 14 as a mobile communication participant.
- the rail-bound vehicle 14 itself has three switching devices 16 , 18 , 20 which are set up to transmit 101 data D between the stationary communication subscriber 12 and the rail-bound vehicle 14 in parallel.
- the three switching devices 16 , 18 , 20 are each set up to transmit data D between a local network L of the rail-bound vehicle 14 and a mobile radio network M.
- the rail-bound vehicle 14 has a central database 22 .
- the three switching devices 16 , 18 , 20 have joint access to this database 22 .
- FIG. 2 shows a further schematic illustration of the aforementioned example of the method 100 for the transmission of data D .
- the data D mentioned are, for example, process data D of the diagram shown schematically in FIG. provided rail vehicle 14 .
- the process data D are transmitted 101 concurrently to the stationary communication subscriber 12 by means of the mobile radio network M and the three switching devices 16 , 18 , 20 .
- Said concurrent transmission 101 of the process data D takes place in accordance with a publication and subscription protocol.
- the standard protocol of the OPC Foundation with the designation "OPC UA Pub Sub" is used as an example.
- process data D are only transmitted if they are present under the conditions defined within a subscription order 12. In this way, unnecessary data traffic due to inquiries from the stationary communication subscriber 12 can easily be dispensed with.
- FIG. 2 also illustrates, by way of example, how a subscription is generated 102 .
- a subscription order is first sent 104 to one of the three switching devices 16 , 18 , 20 of the rail-bound vehicle 14 by means of the stationary communication subscriber 12 .
- all three switching devices 16 , 18 , 20 are set up as equal contact persons of the rail-bound vehicle 14 . Therefore, said subscription order can be sent 104 to any one of the three switching devices 16 , 18 , 20 .
- the said subscription order is then stored 106 in the jointly accessible database 22 of the rail-bound vehicle 14 .
- the subscription order has at least instructions regarding the type and scope of process data D to be transmitted and/or regarding a frequency of transmission of this process data D.
- the IEC 61375-2-6 standard specifies which parameters or process variables are to be transmitted by the rail-bound vehicle 14 to the stationary communication tion participants 12, the so-called land side, are to be sent.
- the selection criterion of the second type is a criterion relating to the utilization of hardware in the switching device 16 , 18 , 20 .
- a criterion is, for example, a CPU load, a memory utilization, such as the main memory or an external memory, a number of free communication channels or another criterion relating to the hardware as such, such as an available total memory, a maximum transmission speed or a maximum transmission capacity.
- the selection criterion of the second type is made up of a freely selectable combination of the aforementioned criteria. It is also conceivable that the selection criterion of the second type is weighted such that initially only predetermined switching devices are available for a selection and other switching devices can only be selected in the event of failure of such a predetermined switching device for the purpose of accepting subscription orders.
- one of possibly several subscription orders stored in the database 22 is selected 108 using a selection criterion of the first type.
- At least one parameter specified in the subscription order is used as a selection criterion of the first type.
- this can be a data quantity, a number of requested data D, a frequency of data D requested for transmission and/or other process variables specified in the IEC 61375-2-6 standard.
- the one on the previously The subscription order selected in said manner 110 is then accepted 112 by the intermediary device 16, 18, 20 selected for accepting the subscription order. After said acceptance 112, the subscription order selected in this regard is executed by means of the intermediary device 16, 18, 20 selected for this purpose 114.
- FIG. 2 also illustrates that the switching devices 16, 18, 20 acting concurrently monitor one another for a faulty operating state 132
- Information regarding their operating status is output 134. It is conceivable here that this information is stored in the database 22 that is accessible together. The other switching devices 16, 18, 20 are used to check whether the information mentioned has been output 136. It is also conceivable that the other switching devices 16, 18, 20 can be used to transmit the information mentioned with regard to an operating state of the switching device 16, 18 outputting the information , 20 are evaluated. This enables a faulty operating state to be detected if a switching device has not failed but is working incorrectly.
- the subscription order or those subscription orders which are assigned to the failed switching device are taken over by at least one of the remaining switching devices 16, 18, 20 140.
- the subscription order or the subscription orders of the failed switching device 16, 18, 20 are first stored 106 in the database 22.
- one of the remaining switching devices 16, 18, 20 is then selected for the purpose of taking over the subscription orders or a subscription order from the failed switching device 16, 18, 20 selected 108. In this way, a workload can be distributed evenly to the remaining switching devices 16 , 18 , 20 despite a failure of one of the switching devices 16 , 18 , 20 .
- FIG. 2 also illustrates by way of example how a change to a subscription order is implemented 116 .
- the stationary communication subscriber 12 sends 118 a change order regarding a change to a predetermined subscription order to any one of the plurality of switching devices 16 , 18 , 22 .
- This change order is stored 120 in the common database 22 .
- the switching device 16 , 18 , 20 to which the subscription order to be changed was originally assigned is then selected.
- the change order is then assigned to this switching device 16 , 18 , 20 .
- the change order is then selected from the database 22 and executed 122 by means of this switching device 16 , 18 , 20 .
- the subscription order changed in this way continues to be executed 114 by the same switching device 16 , 18 , 20 .
- FIG. 2 illustrates by way of example how a subscription order is deleted 124 .
- the stationary communication subscriber 12 sends 126 a deletion order regarding the deletion of a specific subscription order to any one of the plurality of switching devices 16 , 18 , 20 of the rail-bound vehicle 14 .
- the deletion order is stored 128 in the database 22 .
- switching device 16, 18, 20 is selected 108, by means of which the subscription order to be deleted is executed 114.
- the deletion request is selected from the database and executed 130 by means of the switching device 16 , 18 , 20 selected in this way.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022201970.9A DE102022201970A1 (de) | 2022-02-25 | 2022-02-25 | Subskription bei nebenläufig aktiven Vermittlungsvorrichtungen |
| PCT/EP2023/054602 WO2023161369A1 (de) | 2022-02-25 | 2023-02-23 | Subskription bei nebenläufig aktiven vermittlungsvorrichtungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4464125A1 true EP4464125A1 (de) | 2024-11-20 |
Family
ID=85569636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23710229.8A Pending EP4464125A1 (de) | 2022-02-25 | 2023-02-23 | Subskription bei nebenläufig aktiven vermittlungsvorrichtungen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4464125A1 (de) |
| DE (1) | DE102022201970A1 (de) |
| WO (1) | WO2023161369A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2973418T3 (es) | 2017-09-06 | 2024-06-20 | Koninklijke Philips Nv | Equipo de usuario que utiliza doble haz para admitir la multiconectividad en una red de comunicación inalámbrica |
| CN114900463A (zh) * | 2019-05-13 | 2022-08-12 | 华为技术有限公司 | 车内通信系统、车内通信的方法及设备 |
| CN114830698B (zh) | 2020-06-30 | 2024-10-25 | Lg电子株式会社 | 用于v2x服务的方法和使用该方法的装置 |
-
2022
- 2022-02-25 DE DE102022201970.9A patent/DE102022201970A1/de active Pending
-
2023
- 2023-02-23 EP EP23710229.8A patent/EP4464125A1/de active Pending
- 2023-02-23 WO PCT/EP2023/054602 patent/WO2023161369A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022201970A1 (de) | 2023-08-31 |
| WO2023161369A1 (de) | 2023-08-31 |
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