EP3729791A1 - Verfahren zur datenübermittlung in einem netzwerk, teilnehmer und netzwerk zur übermittlung von datenpaketen - Google Patents
Verfahren zur datenübermittlung in einem netzwerk, teilnehmer und netzwerk zur übermittlung von datenpaketenInfo
- Publication number
- EP3729791A1 EP3729791A1 EP19704208.8A EP19704208A EP3729791A1 EP 3729791 A1 EP3729791 A1 EP 3729791A1 EP 19704208 A EP19704208 A EP 19704208A EP 3729791 A1 EP3729791 A1 EP 3729791A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data packet
- subscriber
- network
- subscribers
- data
- 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.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- 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
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- 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
- H04L69/22—Parsing or analysis of headers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/246—Connectivity information discovery
Definitions
- a reliable transmission of data packets between the participants is desired. This reliability, which can also be referred to as Quality of Service (QoS), of a transmission is the likelihood that a data packet will be received by its destination.
- QoS Quality of Service
- Network subscribers can transmit the data packets to other subscribers to which they are connected.
- the data transmission between the participants is not always reliable and can, for example, by a movement of mobile subscribers, by exceeding the transmission capacity, by a failure or overload of subscribers, by interference or failure of the transmission technology or by other properties of the data transmission technology or the Participants are disturbed.
- Exemplary networks in which such a disruption of data transmission can be problematic are data transmissions of train control facilities between train facilities and trackside facilities, data transmissions between mobile and stationary Automatmaschinesge devices in industrial plants or even data transfers between motor vehicles and fixed A directions of road transport.
- the data transmission within a network can be done by a subscriber to one or more other connected subscribers.
- the transmitting subscriber is identical to the origin of the data transmission and the catching participants identical to the destination of data transmission. In most cases, however, there is no direct connection between the originating participant and the target participant. In this case, a data transmission takes place indirectly via one or more subscribers, who forward the data packet.
- a data packet is a defined unit of data that is transmitted and processed together.
- a data packet contains at least information about the target of the external training.
- This destination may be a single subscriber (unicast or anycast) a defined subset of subscribers (multicast) or may also be all subscribers (broadcast) of the network.
- the connections between the subscribers can be realized via different data transmission techniques.
- the transmission can for example be wired, radio-based or otherwise done.
- the connection may be in the form of a physical or logical direct connection to one of its subscribers (point-to-point connection) or an unaligned transmission to multiple nodes.
- the connections need not be static, but can also change, for example, by a movement of mobile participants or by changes in the environmental conditions.
- the connections between the subscribers usually have a limited transmission capacity.
- Errors in data transmission can be detected by fault detection mechanisms, and erroneously transmitted data packets can be discarded by subscribers.
- Some known data transmission systems can even correct transmission errors to a limited extent by error correcting mechanisms.
- a reliable transmission of data packets between the participants in networks is desirable.
- a data packet is selectively sent by a subscriber to a connected next subscriber until the data packet has arrived at its destination.
- the determination of the path can be done by a routing protocol, by which the participants determine the connection between them to the destination.
- This method is particularly suitable for transmissions whose destination is a single subscriber (unicast, anycast).
- the invention is therefore based on the object to provide a method for data transmission in a network and a subscriber of such a network, in which the quality of the data transmission can be increased.
- the invention achieves this object by a method for data transmission in a network comprising a plurality of subscribers, in which a uniquely identifiable data packet is transmitted from at least one first subscriber to all adjacent second subscribers in which the data packet is received by each second subscriber and determined Whether the data packet from this second subscriber has already been received and / or sent beforehand, and in which the data packet is sent by every second subscriber to all adjacent third subscribers, if the respective second subscriber has not previously received the data packet and / or or had been singing.
- the invention solves the problem by a sectionneh mer for receiving and sending data packets in a network of multiple participants, the participants is designed to receive a data sent out from an adjacent subscriber data packet and determine whether the data packet from the ten Subscriber has already been received and / or sent and the subscriber is configured to tenvers to all adjacent participants to send if the subscriber has not previously received the data packet and / or sent.
- the solution according to the invention has the advantage that the entire network of subscribers with the data packet is supplied or flooded on the egg nen page, thereby ensuring reliable transmission to the destination.
- the destination can also consist of several or all participants of the network (multicast, broadcast).
- the data packet is sent by the subscribers to all neighboring subscribers.
- the data packet is duplicated or copied accordingly.
- an unnecessary burden of Netzwer kes avoided by the invention, because every second participant sends the data packet only to the adjacent third party, if the respective second party had not previously sent or received the data packet. A Mehrfachüber mediation of the same subscriber is thus avoided. This minimizes traffic on the network.
- the received data packet from each of the second subscribers can not be sent if this second subscriber had previously received and / or sent the data packet, or this second subscriber is the only destination of the data packet.
- the received data packet can be deleted if the respective second subscriber had previously received the data packet and / or had already sent it.
- a data volume greater than 128 bytes can be sent or received together by means of the data packet.
- a data volume greater than 128 bytes makes sense. Significantly larger amounts of data are of course also possible.
- the data packet from every other subscriber can not be sent back to the first subscriber. This has the advantage that the data traffic in the network is reduced because the first subscriber has already seen the data packet received by the second subscriber in each case.
- the invention also relates to a network for the transmission of data packets with a plurality of subscribers, in which, according to the invention, at least some of the subscribers are designed according to the abovementioned embodiment according to the invention.
- the network can be designed as an ad hoc network.
- the invention is particularly well suited to the design of such ad hoc networks.
- the network may be formed within a railway installation, an industrial plant or amony Struktursanla ge.
- Figure 1 6 are schematic representations of a beispielhaf th embodiment of a network according to the invention in different steps ei ner data transmission according to the invention.
- FIGS. 1 to 6 each show a network 1 with a multiplicity of subscribers 2, which are at least partially connected to one another by connections 3.
- the participants 2 forming the network 1 are, for example, various vehicle or trackside Wernerseinrich lines of a railway technical system, between which a data transmission takes place.
- the connections 3 between the participants 2 are intended to be radio-based here by way of example. Alternatively, however, the connections 3 may also be ka belfact or carried out in other ways.
- the compounds 3 also do not have to be static, but can change as a result of a movement of the mobile subscribers 2.
- the schematic representation in FIGS. 1-6 is therefore to be regarded as a snapshot.
- FIGS. 1-6 a data packet 4 is shown in FIGS. 1-6, which is transmitted between certain subscribers 2.
- the direction of transmission of the data packet 4 between the participants participants 2 is indicated by an arrow.
- participants 2 In the following who den designated the participants 2 to differentiate with different reference numerals.
- a data packet 4 by means of the method according to the invention from an original subscriber 2.1, which forms the origin U of the data packet 4, to a subscriber 2.15, which represents the destination Z of the data packet 4.
- the data packet 4 is created in its origin U by the subscriber 2.1.
- the destination Z of the data packet 4 should be the Operaneh mer 2.15, which is specified in the data packet 4.
- the data packet 4 has a unique identification means 5, by means of which the data packet 4 can be uniquely identified.
- the identification means 5 is a
- Identify such as a cryptographic message authentication code, a sender identifier and sequence number combination, a randomly generated packet identifier, or any other identifier that uniquely identifies the data packet 4 from its original transmission.
- All subscribers 2, 2.1 - 2.15 of the network 1 are designed such that they record the identification means 5 of all the data packets 4 which they receive and / or send. So you can check if a new data packet 4 has already been received. If the data packet 4 or the data packets 4 is mentioned here, the identical data packet 4 and its duplicated data packets 4 are always meant. Other new data packets with different content are not shown in the figures.
- the data packet 4 in addition to the identification means 5, the data packet 4 but also user data 6, the transmission of which is the actual purpose of data transmission.
- User data 6 can be example, information of a train protection device that must be transmitted to another participant 2.
- the data packet 4 is shown once enlarged schematically to show the different contents.
- each subscriber 2 transmits the data packet 4 to all of his neighboring subscribers 2, with the exception of the subscriber 2 from whom the data packet 4 is received. was.
- the data packet 4 can also be sent to the subscriber 2, from whom the data packet 4 was received, if this is not technically feasible, for example, bar. This is necessary, for example, if only one radio channel is available for transmission.
- the data packet is duplicated by the sending subscriber 2, if necessary, in order to be able to send one version to each user 2.
- the multiplied data packets 4 are identical to one another and have the same identification means 5.
- the subscriber 2.1 sends the data packet 4 to its neighboring users 2.2 and 2.3.
- the subscribers 2.2 and 2.3 who have received the data packet 4 in this step, read out the identification means 5 of the data packet 4.
- each of the receiving subscribers 2.2, 2.3 determines whether the data packet 4 has already been received or sent before. Since each participant records the identification means 5 of all data packets 4 which he has previously seen, ie sent or received, the determination can be made by comparison with the recorded identification means 5.
- Each receiving subscriber 2.2, 2.3 thus compares the identification means 5 of the new data packet 4 with the identification means 5 of the "old" data packets 4.
- the data packet 4 is only forwarded by a subscriber 2 if it has not yet arrived from this subscriber 2 received and / or sent.
- the data packet 4 is forwarded by the subscribers 2.2 and 2.3 to the adjacent subscribers 2.4, 2.5 as shown in FIG. Since the participant 2.3 has only one has neighboring subscriber 2.5, the data packet 4 does not have to be duplicated here.
- the data packet 4 is not sent back to the neighboring user 2 from which it was previously received.
- Figure 3 shows the next step of data transmission of the data packet 4 from the participants 2.4 and 2.5 to their neigh disclosed participants 2.6, 2.7 and 2.8.
- the subscriber 2.5 had received the data packet 2 twice, namely both from the subscriber 2.3 and from the subscriber 2.2, as shown in FIG.
- the two data packets 4 are identical.
- it is checked for the first received data packet 4 by subscriber 2.5 whether this data packet has already been received or transmitted by him. Since this has not yet been the case, the data packet 4 is forwarded to the single adjacent subscriber 2.8, as shown in FIG.
- the second received data packet 4 is deleted by the subscriber 2.5 and not forwarded because the check here shows that the data packet 4 has already been received before. Namely, the identification means 5 of the second data packet 4 has been recorded by subscriber 2.5 and its renewed reception recognized. By deleting the second data packet 4, the load on the network 1 is advantageously reduced.
- FIG. 4 shows the next step of the data transmission shown, in which the subscribers 2.6, 2.7 and 2.8 forward the data packets 4 to the next adjacent subscribers 2.9, 2.10 and 2.11.
- the subscriber 2.6 duplicates the data packet 4 in order to be able to forward it to its neighboring subscribers 2.7 and 2.11 in each case.
- the participant 2.7 de-duplicated, so deletes the data packet 4 once, because it receives the data packet 4 from both the subscriber 2.4 and the subscriber 2.6 participants.
- the subscriber 2.8 in turn duplicates the data packet 4 in order to be able to forward it to its neighboring subscribers 2.9 and 2.10.
- FIG. 5 again shows the next step of the data transmission in which the subscribers 2.10 and 2.11 forward the data packet 4.
- Subscriber 2.10 sends the data packet 4 to its single new neighboring subscriber 2.14.
- the participant 2.10 does not have to copy the data packet 4 nor delete it.
- Participant 2.11 on the other hand, has two new neighboring subscribers 2.12 and 2.13. Therefore, the subscriber 2.11 duplicates the data packet 4 in order to be able to forward it to the subscribers 2.12 and 2.13 respectively.
- the data packet 4 reaches its destination Z, which exists in the subscriber 2.15. Namely, the subscribers 2.12, 2.13 and 2.14 send the data packet 4 respectively to their single new adjacent subscriber 2.15. Since the subscriber 2.15 is the destination Z of the data packet 4, the fiction, contemporary data transmission ends here.
- the goal of data transmission is by way of example a single participant 2.15. Therefore, this is a unicast or anycast data transfer.
- the method according to the invention can also be used for data transmission to a defined subset of the subscribers according to the multicast method or else to all subscribers 2 according to the broadcast method.
- the data packet 4 has a data volume greater than 1 KB. Therefore, a sufficient amount of user data can be transmitted in the data packet 4. As a result, a multiplicity of data packets 4 per time unit, for example per second, can be transmitted within the network 1 with the method according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018202638.6A DE102018202638A1 (de) | 2018-02-21 | 2018-02-21 | Verfahren zur Datenübermittlung in einem Netzwerk, Teilnehmer und Netzwerk zur Übermittlung von Datenpaketen |
| PCT/EP2019/051535 WO2019162020A1 (de) | 2018-02-21 | 2019-01-23 | Verfahren zur datenübermittlung in einem netzwerk, teilnehmer und netzwerk zur übermittlung von datenpaketen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3729791A1 true EP3729791A1 (de) | 2020-10-28 |
Family
ID=65363227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19704208.8A Withdrawn EP3729791A1 (de) | 2018-02-21 | 2019-01-23 | Verfahren zur datenübermittlung in einem netzwerk, teilnehmer und netzwerk zur übermittlung von datenpaketen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200396794A1 (de) |
| EP (1) | EP3729791A1 (de) |
| CN (1) | CN111742536A (de) |
| DE (1) | DE102018202638A1 (de) |
| WO (1) | WO2019162020A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3842318A1 (de) | 2019-12-23 | 2021-06-30 | Thales Management & Services Deutschland GmbH | Verfahren zur datenübertragung innerhalb eines schienengebundenen verkehrssystems, datenübertragungssystem, schienengebundenes verkehrssystem mit einem datenübertragungssystem und verwendung von kommunikationseinheiten an feldelementen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100238935A1 (en) * | 2002-02-25 | 2010-09-23 | Olsonet Communications Corporation | Method for Routing Ad-Hoc Signals |
| US20160080279A1 (en) * | 2014-09-12 | 2016-03-17 | Qualcomm Incorporated | Selective storage and deletion in mobile content delivery networks |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7532623B2 (en) * | 2004-03-24 | 2009-05-12 | Bbn Technologies Corp. | Methods for wireless mesh multicasting |
| KR100905218B1 (ko) * | 2007-04-09 | 2009-07-01 | 삼성전자주식회사 | 애드혹 네트워크에서 콘텐츠 중복 검출 방법 |
| US20120113896A1 (en) * | 2010-11-10 | 2012-05-10 | Telcordia Technologies, Inc. | Skip Ahead Routing in Wireless Ad Hoc Networks |
| CN102158864B (zh) * | 2011-04-15 | 2013-07-24 | 北京航空航天大学 | 一种基于可靠性的移动Ad Hoc网络自适应安全路由方法 |
| US8792360B2 (en) * | 2012-04-30 | 2014-07-29 | Fujitsu Limited | Duplicate packet suppression |
| US9712282B2 (en) * | 2014-03-28 | 2017-07-18 | Qualcomm Incorporated | Route-less multi-hop transmission technique in a peer-to-peer infrastructure-less network |
| US20160301539A1 (en) * | 2014-10-10 | 2016-10-13 | Telefonaktiebolaget L M Ericsson (Publ) | Broadcast in meshed networks |
-
2018
- 2018-02-21 DE DE102018202638.6A patent/DE102018202638A1/de not_active Withdrawn
-
2019
- 2019-01-23 EP EP19704208.8A patent/EP3729791A1/de not_active Withdrawn
- 2019-01-23 CN CN201980013977.8A patent/CN111742536A/zh active Pending
- 2019-01-23 WO PCT/EP2019/051535 patent/WO2019162020A1/de not_active Ceased
- 2019-01-23 US US16/971,810 patent/US20200396794A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100238935A1 (en) * | 2002-02-25 | 2010-09-23 | Olsonet Communications Corporation | Method for Routing Ad-Hoc Signals |
| US20160080279A1 (en) * | 2014-09-12 | 2016-03-17 | Qualcomm Incorporated | Selective storage and deletion in mobile content delivery networks |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2019162020A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019162020A1 (de) | 2019-08-29 |
| DE102018202638A1 (de) | 2019-08-22 |
| US20200396794A1 (en) | 2020-12-17 |
| CN111742536A (zh) | 2020-10-02 |
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