EP4356587A1 - Verfahren zur steuerung einer datenübertragung - Google Patents
Verfahren zur steuerung einer datenübertragungInfo
- Publication number
- EP4356587A1 EP4356587A1 EP22758474.5A EP22758474A EP4356587A1 EP 4356587 A1 EP4356587 A1 EP 4356587A1 EP 22758474 A EP22758474 A EP 22758474A EP 4356587 A1 EP4356587 A1 EP 4356587A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- parameter
- data transmission
- value
- monitoring
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/19—Flow control; Congestion control at layers above the network layer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0847—Transmission error
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
- H04L47/266—Stopping or restarting the source, e.g. X-on or X-off
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/29—Flow control; Congestion control using a combination of thresholds
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
Definitions
- the invention relates to a method for controlling data transmission, a network for carrying out the method, a computer program product and a computer-readable data carrier.
- a data transmission of data by means of external networks, such as mobile radio networks, for cost reasons can be accompanied by a limitation of data volume and an associated possible limitation of transmission capacity or transmission speed.
- Such a data volume can already be reduced due to an unsuccessful connection establishment.
- Locally different network coverages as well as high driving speeds significantly influence the quality of the data transmission.
- Mobile vehicles such as rail-bound vehicles, are therefore particularly affected by an undesirable reduction in data volume.
- a connection setup or data transmission has hitherto been made dependent on the signal strength of a mobile radio network.
- signal strength maps are used for this, from which a locally dependent quality of a mobile radio network can be read. In this way, a reduction in the data volume due to poor or insufficient network coverage can be prevented.
- the object of the invention is to implement efficient data transmission that is as loss-free as possible. This object is achieved by a method having the features of claim 1.
- the object of the invention consists in specifying a network by means of which the method according to the invention can be carried out.
- the object of the invention is to specify a computer program product and a computer-readable data carrier.
- the following steps are provided in the method according to the invention for controlling a data transmission implemented by means of network protocols.
- at least one parameter is recorded, which quantifies a quality of a data transmission for one of the network protocols mentioned.
- a comparison value is then determined using the at least one parameter.
- the comparison value is then compared with a predefinable limit value of the first type. As soon as the comparison value is greater than the predefinable limit value of the first type, data transmission is interrupted.
- the comparison value is selected in such a way that the data transmission is interrupted as soon as the comparison value falls below a predefinable limit value of the first type or reaches or leaves a predefinable value range.
- the method according to the invention is computer-implemented Procedure .
- the steps of the method according to the invention can either be carried out repeatedly in succession or in parallel in a suitable manner.
- the step of detecting can always be performed and, concurrently and independently of this, the further named steps of determination and adjustment can be performed.
- a faulty data transmission can thus be detected quickly and with little effort. In addition, it can be recognized in this way whether the data transmission has a low level of error or a high level of error. In addition, an undesired reduction of a limited data volume due to faulty data transmission can be prevented.
- a parameter that quantifies the quality of a data transmission for a network protocol can be, for example, an error-free protocol call, an incorrect protocol call, a response time, a period of time until a transmission confirmation arrives, packet circulation times or parameters relating to the availability of a host .
- Said comparison value can be, for example, a sum, a mean value, a weighted mean value or a sum per time unit.
- the at least one parameter is recorded for at least one other of the network protocols mentioned. This makes it possible to quickly and reliably detect errors in data transmission.
- the at least one parameter is recorded for at least one network protocol which is assigned to a basic communication layer of a network protocol stack.
- the network protocol stack is to be understood as meaning a protocol stack in the sense of computer science. by means of Such a protocol stack enables data transmission in a network using different network protocols.
- the OS I reference model or the TCP/IP reference model can be used as a reference model for the network protocol stack.
- Network protocols of a basic communication layer are to be understood as meaning those network protocols of the network protocol stack which are assigned to layers 1-4 according to the OS I reference model, ie bit transmission, security, switching and transport.
- the network protocols of the basic communication layer correspond to those network protocols that are assigned to the network access, Internet and transport layers.
- a network protocol that is assigned to the basic communication layer is a TCP, UDP, SCTP, IP, ICMP, Ethernet, WLAN, ARP or PDCP protocol.
- the PDCP protocol is what is known as the "Packet Data Convergence Protocol", which is used, for example, in the "Long Term Evolution" mobile radio standard.
- the selection of protocols mentioned is only an example and is neither complete nor conclusive. Data transmission errors that can be traced back to transport-oriented layers of the network protocol stack can be easily identified in this way.
- the at least one parameter is recorded for at least one network protocol, which is assigned to an application layer of the network protocol stack.
- network protocols of the application layer should be understood to mean those network protocols of the network protocol stack which are assigned to layers 5-7 in relation to the OSI reference model, ie the layers of the applications, the presentation and the session.
- the network protocols of the application layer correspond to those network protocols which correspond to the application layer of the TCP/IP reference model of the same name assigned .
- a network protocol from the application layer is a DHCP , DNS , FTP , SFTP , HTTP , HTTPS , MQTT , MCP , or SMTP protocol. This selection is only an example and is neither complete nor conclusive. Transmission errors in application-oriented layers of the network protocol stack can thus be reliably identified.
- an advantageous embodiment variant provides that the comparison value is determined for at least two of the network protocols by determining an intermediate value for each of the at least two network protocols using the at least one parameter. These intermediate values are then summed up to form the comparison value by means of weighted summation. In this way, a value that is easy to handle can be provided for assessing the quality of the data transmission.
- Such an intermediate value can be, for example, a sum, a median or an average value of a recorded parameter.
- An advantageous embodiment provides that a weighting factor for an intermediate value, which is determined based on the at least one parameter for a network protocol assigned to the basic communication layer, is greater than a weighting factor for an intermediate value, which is determined based on the at least one parameter for a network protocol on the application layer associated network protocol is determined. In this way, detection of transmission errors during data transmission can be optimized.
- a monitoring parameter is recorded as a result of the interruption of the data transmission.
- a quality of a data transmission for a predetermined network protocol of the mentioned network protocols is quantified by means of the monitoring parameter.
- a monitoring value is then determined on the basis of the monitoring parameter, which is compared with a predefinable limit value of the second type. In case of If the monitoring value is less than the limit value of the second type, the interrupted data transfer is continued. If the monitoring value is greater than or equal to the limit value of the second type, the monitoring parameter is preferably recorded again, and a monitoring value is then determined again using this monitoring parameter, which is then compared with the limit value of the second type.
- the monitoring value is selected in such a way that the data transmission is interrupted as soon as the monitoring value falls below a predefinable limit value of the second type or reaches or leaves a predefinable value range.
- a network protocol belonging to the basic communication layer is provided as the predetermined network protocol. In this way, the amount of data required to check the quality of the data transmission during the interruption in the data transmission can be minimized.
- a further advantageous development provides that a monitoring service is set up for different network protocols of the network protocol stack, by means of which the at least one parameter and/or the monitoring parameter is detected, which quantifies the quality of a data transmission for the corresponding network protocol.
- the monitoring service is set up to repeatedly record the at least one parameter and/or the monitoring parameter of a corresponding network protocol.
- the monitoring service can be an application or a component of software, for example. It is also conceivable that the monitoring service records the at least one parameter by using the monitoring service tes is measured or by reading it out using the monitoring service. The at least one parameter can be read out, for example, with the aid of a driver or a computer program of an operating system.
- the method can be implemented simply and inexpensively by means of the monitoring service. In addition, the method can easily be adapted to existing systems.
- the at least one parameter and/or the monitoring parameter is/are transmitted to a central monitoring entity.
- the comparison value and/or the monitoring value is determined by means of the central monitoring instance.
- the monitoring instance and the monitoring services are connected to one another by means of interfaces in order to transmit the parameters and/or monitoring parameters.
- the monitoring entity cyclically polls the at least one parameter and/or the monitoring parameter or that the at least one parameter and/or the monitoring parameter is cyclically transmitted to the monitoring entity by means of the monitoring services.
- Such a monitoring instance can be implemented, for example, as a background process which has at least one communication interface to the monitoring services.
- the comparison value can be determined reliably and inexpensively using the central monitoring instance.
- the method according to the invention can be carried out by means of the network according to the invention.
- the network according to the invention has a data processing device which is set up to carry out the method according to the invention.
- a data processing device should be understood to mean a device with at least one processor.
- this can be a computer ter, a server or a distributed computer system. This makes it possible to set up a network by means of which resource-saving and efficient data transmission can be implemented.
- LTE modems are provided.
- the LTE modems can be used to transmit data between at least two network participants in the network.
- the LTE modems are preferably set up to transmit data using the LTE mobile radio standard, the LTEA mobile radio standard or other developments of the LTE mobile radio standard.
- a data volume that is limited in mobile communications can be used efficiently and cost-effectively in this way.
- At least one network subscriber of the network is a vehicle.
- this vehicle is a rail-bound vehicle.
- a location- or driving position-dependent impairment of the quality of the data transmission can thus be detected quickly and inexpensively.
- the method according to the invention for controlling a data transmission realized by means of network protocols can be easily implemented.
- the computer program product according to the invention has instructions which, when they are executed by a data processing device, cause the latter to carry out the method according to the invention.
- the network according to the invention is preferably prompted to carry out the method according to the invention for controlling the data transmission realized by means of network protocols.
- a computer-readable data carrier is proposed, on which the computer program product according to the invention is stored.
- FIG. 2 illustrates a further part of the exemplary embodiment of the method according to the invention
- FIG 3 shows an exemplary embodiment of a network according to the invention in a schematic representation.
- FIG. 1 illustrates an exemplary embodiment of a method 100 for controlling a data transmission D .
- This data transmission D is implemented using a network protocol stack.
- the network protocol stack is divided into a basic communication layer and an application layer.
- the network protocol stack can be formed from any number of different known network protocols.
- the network protocol collectively have an IP protocol, a VPN protocol, a TCP protocol, a UDP protocol, an HTTP protocol, an MQTT protocol, an FTP protocol and other known or alternative network protocols.
- the letter sequences listed in the previous sentence are abbreviations which are used in connection with the OS I
- At least one parameter can be recorded 120 for each of the network protocols of the network protocol stack, which quantifies a quality of the data transmission D for a corresponding network protocol.
- the parameter is a response time, incorrect and/or error-free log calls or parameters for the accessibility of a host.
- Which parameter is recorded and whether one or more parameters are to be recorded for each network protocol or just some of the network protocols of the network protocol stack depends in practice essentially on the requirements placed on the network and/or the data transmission become .
- a network can have the task of transferring process data, media data or a combination of these.
- the network can have the task of providing secure data transmission, which can be implemented, for example, by means of a virtual private network (VPN) and/or by means of encrypted data transmission.
- VPN virtual private network
- the tasks of the network depend on who and/or how the transmitted data is to be output. Due to this large number of conceivable combinatorial possibilities, the exemplary embodiment of the method explained in more detail below is explained in more detail using an IP protocol as a representative of the basic communication layer of the network protocol stack and using an HTTP protocol as a representative of the application layer of the network protocol stack.
- erroneous pro- tokollauf call e and as a second parameter for quantifying the quality of the data transmission D a response time of the corresponding network protocol is recorded 120 .
- the response time is a time difference between the time at which data is sent and the time at which an associated acknowledgment of receipt arrives.
- the erroneous IP protocol calls and the response time are recorded for the IP protocol.
- the faulty HTTP protocol calls and the response time are also recorded 120 in the first step.
- intermediate values are respectively determined 140 for the respective network protocols on the basis of the recorded faulty protocol calls and the recorded response.
- Such an intermediate value can be, for example, a mean value or a sum of values recorded for the respective parameter.
- comparison values are then determined 160 .
- an intermediate value for the sum of the erroneous IP protocol calls and an intermediate value for the sum of the erroneous HTTP protocol calls are summed up 160 by means of weighted summation to form a first comparison value.
- the mean values of the response zelten are determined 140 in each case as an intermediate value for the response zelten of the IP protocol and as an intermediate value for the response zelten of the HTTP protocol.
- the two mean values of the response times are then summed 160 to form a second comparison value by means of weighted summation.
- a weighting factor of the intermediate values determined for the IP protocol is te 140 greater than a weighting factor of the intermediate values 140 determined for the HTTP protocol.
- each of these two comparison values is compared 180 with its own predefined limit value of the first type.
- the first comparison value and the second comparison value are combined to form a common comparison value, which is then compared 180 with an associated common limit value of the first type. If the comparison 180 shows that at least one of the two comparison values is smaller than the associated limit value of the first type, then the parameters mentioned are recorded 120 again in the first step of the method. As already described, intermediate values are first determined again 140 and, based on this, the first comparison value and the second comparison value are determined again 160 . The two comparison values are then compared 180 with the respectively associated limit value of the first type.
- data transmission D is interrupted 200 .
- the data transmission D is interrupted 200 as soon as only one of the two comparison values exceeds the associated limit value of the first type.
- the parameters 120 are recorded again and subsequent steps are only run through if the two comparison values are smaller than the respectively associated limit value of the first type.
- a monitoring parameter is recorded 220 .
- the monitoring parameter can be any parameter which is suitable for quantifying the quality of the data transmission D.
- this monitoring parameter can deviate from the parameters 120 recorded in the first step and/or can be recorded with a lower frequency than the parameters 120 recorded in the first step become 220 .
- the availability of a host is selected as a monitoring parameter by way of example. This can be determined, for example, using an echo request, which is also referred to as an “echo request”.
- the diagnostic tool “ping” can be used, which is based on the “Internet Control Message Protocol” (ICMP).
- ICMP Internet Control Message Protocol
- the "Arping" diagnostic tool which is based on the "Address Resolution Protocol” (ARP)
- ARP Address Resolution Protocol
- the availability of the host using the IP protocol is recorded 220 as a monitoring parameter.
- a monitoring value is then determined 240 which, in the present exemplary embodiment, indicates a ratio of negative to positive availability requests over a predetermined period of time.
- the monitoring value can specify, for example, an average value over a period of time until availability information arrives or a number of incorrect echo requests.
- the monitoring value is then compared 260 with a predefined limit value of the second type.
- the monitoring parameter is recorded 220 again. Based on this, the monitoring value 240 is then determined again and then compared 260 with the limit value of the second type. If the monitoring value is smaller than the limit value of the second type, the interrupted data transmission D is continued 280 .
- FIG 2 illustrates a further part of the method 100, in which a monitoring service 10, 12 is set up in each case for those network protocols of the network protocol stack which are used to quantify the quality of the data transmission using the at least one parameter.
- a monitoring service 10, 12 is set up in each case for those network protocols of the network protocol stack which are used to quantify the quality of the data transmission using the at least one parameter.
- the erroneous protocol calls and the response are recorded 120 for the IP protocol by means of the first monitoring service 10 .
- the availability of the host is recorded 220 by the first monitoring service 10 using the IP protocol.
- the faulty protocol calls and the response for the HTTP protocol are recorded 120 by means of the second monitoring service 12 .
- the parameters 120 recorded by means of the first monitoring service 10 and the second monitoring service 12 and the monitoring parameter 220 recorded by means of the first monitoring service 10 are transmitted to a central monitoring entity 14 in the present exemplary embodiment.
- the respective intermediate values described above are determined 140 on the basis of the central monitoring instance 14 and the first and the second comparison value are determined 160 on the basis of these intermediate values, as described above.
- the monitoring entity 14 uses the monitoring entity 14 to determine 240 the monitoring value based on the detected monitoring parameter.
- FIG. 3 shows a network 16 in a schematic representation by way of example.
- the network 16 has two data processing devices 18 , 20 .
- Each of the two data processing devices 18 , 20 is set up to carry out the method 100 described in connection with FIG. 1 and FIG. 2 .
- the network 16 can generally have any number of network participants 26 , 28 .
- FIG. 3 shows two network subscribers 26 , 28 of the network 16 as an example.
- a first network subscriber 26 of the two network subscribers 26 , 28 is in the form of a rail-bound vehicle.
- a first data processing device 18 of the two data processing devices 18 , 20 is arranged in the rail-bound vehicle 26 .
- the rail-bound vehicle 26 has a first LTE modem 22 .
- the first LTE modem 22 is a data transmission D to a second LTE modem 24 can be implemented.
- the second LTE modem 24 is part of a second network subscriber 28 of the two network subscribers 26 , 28 .
- the second network participant 28 is embodied, for example, as a land-based system with which the rail-bound vehicle 26 communicates in order to exchange data.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Quality & Reliability (AREA)
- Communication Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021209566 | 2021-08-31 | ||
| PCT/EP2022/071343 WO2023030786A1 (de) | 2021-08-31 | 2022-07-29 | Verfahren zur steuerung einer datenübertragung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4356587A1 true EP4356587A1 (de) | 2024-04-24 |
Family
ID=83059362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22758474.5A Pending EP4356587A1 (de) | 2021-08-31 | 2022-07-29 | Verfahren zur steuerung einer datenübertragung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4356587A1 (de) |
| WO (1) | WO2023030786A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100728037B1 (ko) * | 2006-03-03 | 2007-06-14 | 삼성전자주식회사 | 무선 데이터 스트리밍 시스템의 파라미터 제어 방법 및장치 |
| JP2015061308A (ja) * | 2013-09-20 | 2015-03-30 | 株式会社東芝 | 通信装置、および制御方法 |
| KR102849167B1 (ko) * | 2019-10-08 | 2025-08-22 | 삼성전자 주식회사 | 스플릿 베어러를 이용하여 데이터를 수신하는 전자 장치 및 전자 장치의 동작 방법 |
-
2022
- 2022-07-29 EP EP22758474.5A patent/EP4356587A1/de active Pending
- 2022-07-29 WO PCT/EP2022/071343 patent/WO2023030786A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023030786A1 (de) | 2023-03-09 |
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