EP3834380A1 - Relai pour la convergence entre un routage géographique à sauts multiples et un routage cellulaire - Google Patents
Relai pour la convergence entre un routage géographique à sauts multiples et un routage cellulaireInfo
- Publication number
- EP3834380A1 EP3834380A1 EP19746126.2A EP19746126A EP3834380A1 EP 3834380 A1 EP3834380 A1 EP 3834380A1 EP 19746126 A EP19746126 A EP 19746126A EP 3834380 A1 EP3834380 A1 EP 3834380A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- station
- packet
- network
- cellular
- geo
- 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- Withdrawn
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- 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
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/005—Moving wireless networks
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- 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
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Definitions
- the present invention belongs to the field of communication protocols dedicated to connected vehicles. It relates in particular to a communication protocol for relaying useful data between a multi-hop geographic routing and a cellular routing, and vice versa.
- a short-range network specific to connected vehicles such as a network defined by the ETSI ITS-G5 standard, based on geographic hopping routing and a cellular network, such as an LTE network.
- a short range network specific to connected vehicles is typically a Car2X network, for "car to everything” in English, that is to say “car to any device” in French, or "V2X”, for "vehicle to everything” In English, that is to say “vehicle to any device” in French.
- Car2X for "car to everything” in English, that is to say “car to any device” in French
- V2X for "vehicle to everything” In English, that is to say “vehicle to any device” in French.
- such networks support “Car2Car” communications, car to car in French, “Car2 Infrastructure” communications, car to infrastructure in French, or “Car2Pedestrian” communications, car to pedestrian in French.
- Vehicle means any type of vehicle such as a motor vehicle, a moped, a motorcycle, a wheelbarrow, a rail vehicle, etc.
- connected vehicle means any type of vehicle capable of exchanging data, for example via a radio frequency link with any other type of connected entity, such as a base station of a cellular network, another vehicle, a road infrastructure, a personal device of a pedestrian, etc.
- Personal pedestrian device means any pedestrian device configured to exchange data.
- a smartphone for a smartphone, a laptop, a connected key, a chip implanted under the skin, etc. are examples of personal pedestrian devices.
- Sending and receiving data from / to a vehicle cannot be done simply by transposing known technologies in the field of mobile telephony to the vehicle.
- an obligation of means is not sufficient.
- an autonomous vehicle does not receive the indication that an emergency vehicle is arriving at full speed because the autonomous vehicle is at that time in an area not covered by a station. base of a cellular network.
- station is used to designate the road users concerned by Car2X communications.
- a station thus refers to a vehicle, a road infrastructure or a personal device of a pedestrian.
- These specific protocols concern short-range ad-hoc networks in which data is directly exchanged between stations.
- the routing of data between stations is, for such short-range networks, geographic.
- the geographic component is indeed necessary to identify the stations concerned by a communication and send them the communication.
- ETSI ITS-G5. an example of a standard supporting such protocols is ETSI ITS-G5.
- the management of multi-hop geographic routing is ensured by the Geonetworking layer in the ETSI ITS-G5 standard (see in particular the document ETSI EN 302 636-4-1 V1.2.1).
- Other standards, including components of ETSI ITS-G5 such as the Geonetworking layer, exist.
- An important aspect of these networks relates to the fact that the geographic routing between stations is direct. Such routing is in particular called multi-hop routing, “multi hops” in English. This means in particular that the stations are configured to exchange data directly with one another, without for example passing through a base station of a cellular network.
- geographic multi-hop routing will make it possible to transmit, typically directly, the indication of the emergency vehicle.
- Useful data means any data or information intended to be transmitted.
- useful data is not limited and may as well refer to information used by a computer program such as an autonomous driving algorithm, an acknowledgment of receipt of any type of protocol data unit, for Protocol Data Unit, PDU, in English, information for verifying the integrity of a PDU, etc.
- first station the transmitting station
- second station the destination station
- a first aspect of the invention relates to a method of relaying useful data by a transit station, the useful data transiting by the transit station from a first station to a second station, a station being a vehicle. , a road infrastructure or a personal device of a pedestrian, the method comprising the steps, implemented by the transit station, of: - reception from the first station and by a short-range network based on geographic routing with multiple hops , of a packet, called geo-network packet, the geo-network packet comprising the useful data and being configured to be routed by the multi-hop geographic routing of the short range network;
- a cellular packet comprising the useful data and being configured to be routed by cellular routing via at least one base station within a cellular network, the processing being implemented by a layer less than or equal to the network layer;
- the method according to the first aspect of the invention therefore makes it possible to relay a data received via geographic routing with multiple hops and retransmitted via cellular routing.
- the method makes it possible to use the cellular network based on cellular routing.
- the architecture of such a cellular network then facilitates transmission over long distances, the latency is reduced and the range is no longer constrained by the presence of other stations between the first and the second vehicle.
- the processing of the geo-network packet to generate the cellular packet being implemented at the network layer or lower, the transit steps within the transit station are advantageously reduced.
- Such signature steps are particularly cumbersome for networks in charge of communications between stations of the vehicle type, road infrastructure and / or personal device of a pedestrian.
- processing of cooperative information messages, CAM for Cooperative Awareness Messages in English and decentralized environmental notification messages, DENM for Decentralized Environmental Notification Message in English, or even RSA signatures introduce at the level of layers above the network layer delays of around 30 ms, for segments intended to be sent by geographic multi-hop routing. This streamlining effect of the processing steps is also multiplied insofar as several transit stations can be inserted between the first station and the second station.
- the relay thus implemented by the network or lower layer thus significantly and effectively improves the possibilities of communications between stations.
- the concepts of "reception from the first station” and “transmission to the second station” are not limited to direct exchanges. This means that intermediaries, and typically other transit stations, can be present between the first station and the transit station and between the transit station and the second station.
- processing of the geo-network packet to generate a cellular packet means any type of processing from, in particular the geo-network packet to generate, in particular, the cellular packet.
- this characteristic is not limited to the generation of a single cellular packet by a single geo-network packet but also covers the generation of a cellular packet by several geo-network packets and other data or even the generation multiple cellular packets from a single geo-network packet.
- Road infrastructure means any infrastructure linked to or located in an environment close to a road, for any type of vehicle. Examples of road infrastructures are a toll barrier, a sign, a fence in a park or a processing center in charge of roads located in a particular geographical area.
- the processing step of the geo-network packet includes the sub-steps of:
- Forming the header of the cellular packet at the network layer or below directly from the geo-network packet advantageously reduces the processing steps at the level of the layers above the network layer. Again, the reduction in processing steps is all the more important as many transit stations may be present between the first and the second station.
- the geo-network packet includes the useful data and information for geographic routing with multiple hops, and in which the information for cellular routing is obtained from the information for geographic routing.
- the information required for cellular routing being directly obtained from the geo-network packet, the number of entities solicited for the generation of the cellular packet is advantageously limited.
- the step of adding the header to the geo-network packet consists in concatenating the header comprising the information for cellular routing to the geo-packet network. Concatenating the header is a very effective method, especially in terms of resources and computing time, to make cellular routing possible. It is recalled that, for the relay method according to the invention, the optimization of the computation time is particularly significant.
- a verification of a transit authorization criterion is carried out, the processing and transmission steps not being implemented in the case where the verification is negative , and in which the transit authorization criterion is at least one of: a fixed control parameter;
- the transit authorization criterion includes at least the variable control parameter, and in which the variable control parameter is updated in at least one of the following situations:
- Having the payload pass through a station may not be appropriate. Indeed, stations belonging for example to individuals (vehicle, personal device of a pedestrian) or to private companies (infrastructure) and transit involving a connection which can be costly, it is not always suitable to allow transit of useful data.
- a second aspect of the invention relates to a method of relaying useful data by a transit station, the useful data passing through the transit station from a first station to a second station, a station being a vehicle, a road infrastructure. or a personal device of a pedestrian, the method comprising the steps, implemented by the transit station, of:
- cellular packet a packet comprising the useful data and being configured to be routed by cellular routing within the cellular network
- geo-network packet the geo-network packet comprising the useful data and being configured to be routed by a multi-hop geographic routing of a short range network, the processing being implemented work by a layer less than or equal to the network layer;
- the second aspect thus makes possible a relay between a cellular routing and a geographic routing with multiple hops.
- a vehicle not covered by a base station of a cellular network may still be accessible via geographic multi-hop routing.
- the step of processing the cellular packet comprises an extraction of the geo-network packet from the cellular packet.
- the extraction is done by removing a header from the cellular packet, the header comprising information for cellular routing via the base station within the cellular network.
- the relay thus implemented by the network layer or lower significantly and effectively improves the possibilities of communications between stations.
- a verification of a transit authorization criterion is carried out, the processing and transmission steps not being implemented in the case where the verification is negative , and in which the transit authorization criterion is at least one of the following elements: ⁇ a fixed control parameter;
- the transit authorization criterion includes at least the variable control parameter, and in which the variable control parameter is updated in at least one of the following situations:
- Having the payload pass through a station may not be appropriate. Indeed, stations belonging for example to individuals (vehicle, personal device of a pedestrian) or to private companies (infrastructure) and transit involving a connection which can be costly, it is not always suitable to allow transit of useful data. Thus, using a control parameter makes it possible to control the transit of data through the station and can thus prevent the station owner from unwanted charges.
- the criticality parameter of the useful data makes it possible to prioritize the messages to be transmitted, the most critical messages, such as distress calls (B-CALL for example), which can for example be systematically transmitted.
- the short range network is an ITS-G5 network and / or the cellular network is a 2G mobile network (for example GSM and / or Edge), a network 3G mobile (e.g. UMTS or HSPA), 4G mobile network (e.g. LTE) or 5G mobile network.
- a third aspect of the invention relates to a computer program comprising instructions for implementing the method according to the first aspect of the invention, when these instructions are executed by a processor.
- a fourth aspect of the invention relates to a device, connected to a transit station, for relaying useful data, the useful data passing through the transit station from a first station to a second station, a station being a vehicle, a road infrastructure or a personal device of a pedestrian, the device comprising at least one processor and a memory arranged to perform the operations of:
- geo-network packet a packet comprising the useful data and being configured to be routed by the routing short-haul network multi-hop geographic
- processing of the geo-network packet to generate a packet, called a cellular packet the cellular packet comprising the useful data and being configured to be routed by cellular routing via at least one base station within a cellular network, the processing being implemented at a layer less than or equal to the network layer;
- a fifth aspect of the invention relates to a device, connected to a transit station, for relaying useful data, the useful data passing through the transit station from a first station to a second station, a station being a vehicle, a road infrastructure or a personal device of a pedestrian, the device comprising at least one processor and a memory arranged to perform the operations of:
- cellular packet a packet comprising the useful data and being configured to be routed by cellular routing within the cellular network
- geo-network packet the geo-network packet comprising the useful data and being configured to be routed by a multi-hop geographic routing of a short range network, the processing being implemented by a layer less than or equal to the network layer;
- a sixth aspect of the invention relates to a vehicle comprising the device according to the fourth and / or the fifth aspect of the invention.
- FIG. 1 illustrates a context of application of the invention
- - Figure 2 illustrates a method according to an embodiment of the invention
- FIG. 3 illustrates a method according to an embodiment of the invention, in the context of layers of a telecommunications network
- FIG. 4 illustrates a detection device according to an embodiment of the invention.
- the invention is described below in its non-limiting application, in the case of motor vehicles communicating together, hereinafter called stations.
- the invention is not limited to such an illustrative application and can for example be implemented by a connected moped, a connected stroller and the fencing of a public garden.
- FIG. 1 illustrates the context of implementation of the invention.
- first station S1, second station S2 and transit station SR Three motor vehicles S1, S2 and SR are shown in FIG. 1 and are called hereinafter first station S1, second station S2 and transit station SR.
- Station S1 communicates with station SR via a short-range network based on geographic multi-hop routing.
- An ETSI ITS-G5-based network is an example of such a short-range network.
- the stations SR and S2 communicate by a cellular network based on cellular routing involving cells C1 and C2 and base stations eNB1 and eNB2.
- the first aspect of the invention covers in particular the relay by the station SR of useful data transmitted by the station S1 to the station S2.
- the useful data is first transmitted by the short-range network from the station S1 to the transit station SR and then transmitted by the cellular network from the transit station SR to the second station S2.
- the second aspect of the invention covers in particular the relay by a transit station (not shown) of useful data transmitted by a first station (not shown) to a second station (not shown).
- the useful data is first transmitted by the cellular network from said first station to said transit station and then transmitted by the short range network from said transit station to said second station.
- FIG. 2 illustrates the method according to the invention, in one embodiment.
- Figure 2 illustrates the method according to the first aspect of the invention.
- the method according to the second aspect of the invention is symmetrical to the method according to the first aspect of the invention and will be described below without being illustrated.
- the steps are carried out at the level of the network layers of the stations S1, SR and S2.
- the network layer is layer 48 in FIG. 3.
- the application layer 40, the presentation layer 42, the session layer 44 and the transport layer are also represented. 46.
- FIG. 3 also illustrates the data link layer 50 for the short range network, the physical layer 52 for the short range network and the short range network 54.
- FIG. 3 illustrates the data link layer data 56 for the cellular network, the physical layer 60 for the cellular network and the cellular network 62.
- the data link layer 56 for the cellular network includes an IPv6 encapsulation sublayer.
- a P_GN packet is generated from, in particular, useful data to be transmitted from station S1 to station S2.
- the useful data is for example received from an upper layer such as the transport layer.
- the geo-network packet is processed so that it can be transmitted over the short-range network which is based on geographic multi-hop routing.
- This processing consists for example of the processing described by the document ETSI EN 302 636-4-1 V1.2.1.
- the P_GN geo-network packet is sent from station S1 to station SR via the short-range network (ITS-G5 for example).
- the P_GN packet is transmitted to the lower layers (typically the data link layer of the short-range network) to be sent via the short-range network, and therefore via multi-hop geographic routing.
- the P_GN geo-network packet is received in step 24. At the network layer, this means that the P_GN packet is received towards lower layers (typically the short-range network data link layer).
- a verification (not shown in FIG. 2) of a transit authorization criterion is carried out, the processing and transmission steps not being implemented in case the verification is negative.
- the transit authorization criterion is at least one of the following:
- control parameters may simply include the information that transit is desired or not. If transit is not desired, when the verification of the authorization criterion is made, the process does not continue until steps 26 and following described below.
- the verification can be done packet by packet, or at other levels (transport, data link layer, application, etc.). Verification can also be done for groups of PDUs.
- the transit authorization criterion includes at least the variable control parameter, and in which the variable control parameter is updated in at least one of the following situations:
- the maintenance operation typically corresponds to the situation where the vehicle station goes to the garage for an overhaul.
- the update data is typically received via any type of connection, for example wireless or via a diagnostic socket, such as the OBD socket, for On Board Diagnostic, on-board diagnostic in French.
- step 26 information is exchanged with other layers, such as for example the "ITS Network and Transport Management" layer.
- This exchanged information can in particular make possible the relay, directly at the network layer and without going back to the upper layers, of the geo-network packet.
- step 28 information for cellular routing via the base stations eNB1 and eNB2 are generated and integrated into an H_CELL header.
- This information can be obtained from the P_GN package.
- a header of the P_GN packet can be used to retrieve an identifier of the station S2 from which the information for cellular routing to the station S2 can be deduced.
- the identifier of the station S2 can be obtained from the information for geographic multi-hop routing contained in the header of the P_GN packet.
- step 30 an addition to the geo-network packet P_GN of the header H_CELL comprising the information for cellular routing is implemented, a cellular packet P_CELL is thus generated.
- adding the header to the geo-network packet can consist of concatenating the header containing the information for cellular routing to the geo-network packet.
- steps 28 and 30 the P_GN geo-network packet is processed to generate the P_CELL cellular packet.
- steps 28 and 30 are implemented by the data link layer 58.
- these steps can be implemented by layer 58, so that the cell packet P_CELL is encapsulated according to the IPv6 protocol.
- the P_CELL cell packet is encapsulated according to the IPv4 protocol.
- step 32 the cellular packet P_CELL is transmitted from the station SR to the station S2.
- the lower layers typically cellular data link layer
- the cell packet P_CELL is then received by the station S2 in step 34 and then processed in step 36 so that the useful data is obtained.
- the useful data is relayed by a transit station from a first station to a second station but said data is received at the transit station via the cellular network and retransmitted from the transit station to the second station via the short-range network.
- a cellular packet is received by the transit station to be relayed to the second station.
- the cellular packet is processed to generate a geo-network packet transmissible over the short-range network.
- the processing step may include an extraction of the geo-network packet from the cell packet.
- the extraction can be done by removing a header from the cell packet, the header comprising information for cellular routing.
- FIG. 4 represents an example of device D of the station S1, SR or S2.
- This device D can be used as a centralized device responsible for at least certain steps of the method carried out by the station S1, SR or S2, according to the invention.
- This device D can take the form of a box comprising printed circuits, of any type of computer or even of a smartphone.
- the device D comprises a random access memory 1 for storing instructions for the implementation by a processor 2 of at least one step of the method as described above.
- the device also includes a mass memory 3 for storing data intended to be kept after the implementation of the method.
- the device D can also include a digital signal processor (DSP) 4.
- DSP digital signal processor
- This DSP 4 receives data to format, demodulate and amplify, in a manner known per se, this data.
- the device also includes an input interface 5 for receiving the data implemented by the method according to the invention and an output interface 6 for transmitting the data implemented by the method.
- geo-network packet from at least one segment, the segment coming from a transport layer or from a layer higher than the layer transport, the geo-network packet being configured to be routed by multi-hop geographic routing within a short range network;
- the cellular packet being configured to be routed by cellular routing via a base station within a cellular network, the processing being implemented by a lower or equal layer at the network layer;
- the method according to A. therefore makes it possible to transmit a geo-network packet configured for geographic multi-hop routing via cellular routing.
- a geo-network packet configured for geographic multi-hop routing via cellular routing.
- the method makes it possible to use the cellular network based on cellular routing.
- the architecture of such a cellular network then facilitates transmission over long distances, the latency is reduced and the range is no longer constrained by the presence of other stations between the first and the second vehicle.
- the processing of the geo-network packet to generate the cellular packet being implemented at the network layer or lower, the steps implemented for transmission are advantageously reduced.
- Such signature steps are particularly cumbersome for networks in charge of communications between stations of the vehicle type, road infrastructure and / or personal device of a pedestrian.
- processing of cooperative information messages, CAM for Cooperative Awareness Messages in English and decentralized environment notification messages, DENM for Decentralized Environmental Notification Message in English, or even RSA signatures introduce at the level of layers above the network layer delays around 30 ms, for segments intended to be sent by geographic multi-hop routing.
- the transmission thus implemented thus significantly and effectively improves the possibilities of communication between stations, and in particular in terms of speed and processing efficiency.
- transmission of the cellular packet to the second station by the cellular network is not limited to a direct exchange. This means that intermediaries, and typically transit stations, can be present between the first station and the second station. Furthermore, “transmission required by the cellular network” means that, from the first station, the packet is transmitted on the cellular network, but this does not necessarily mean that all links between transit stations are ensured by the cellular network. .
- processing of the geo-network packet to generate a cellular packet means any type of processing from, in particular the geo-network packet to generate, in particular, the cellular packet.
- this characteristic is not limited to the generation of a single cellular packet by a single geo-network packet but also covers the generation of a cellular packet by several geo-network packets and other data or even the generation multiple cellular packets from a single geo-network packet.
- Road infrastructure means any infrastructure linked to or located in an environment close to a road, for any type of vehicle. Examples of road infrastructure are a toll barrier, a sign, a fence in a park or a processing center in charge of roads located in a particular geographic area.
- the step of processing the geo-network packet comprises the sub-steps of: • generation of information for cellular routing via the base station within the cellular network;
- the cellular packet being configured to be routed by cellular routing via a base station within a cellular network;
- geo-network packet from the cellular packet
- the geo-network packet being configured to be routed by a multi-hop geographic routing within a short range network, the extraction being set up work by a layer less than or equal to the network layer;
- the second aspect thus makes it possible to receive a cellular packet from which a geo-network packet is obtained.
- geo-network packet a packet, called geo-network packet, from the segment, the geo-network packet being configured to be routed by a multi-hop geographic routing within a short range network;
- the cellular packet being configured to be routed by cellular routing via a base station within a cellular network, the processing being implemented by a lower or equal layer at the network layer;
- G. Device included in a second station a station being a vehicle, a road infrastructure or a personal device of a pedestrian, for receiving a packet, called cellular packet, by the second station from a first station, the device comprising at least one processor and a memory configured to perform the operations of: - reception by the second station of the cellular packet transmitted by the first station, the cellular packet being configured to be routed by cellular routing via a base station within a cellular network;
- geo-network packet a packet, called geo-network packet
- the geo-network packet being configured to be routed by a multi-hop geographic routing within a short range network, the extraction being put implemented by a layer less than or equal to the network layer;
- H Vehicle comprising the device according to F. and / or G.
- a second set of aspects related to the method described above with reference to FIG. 2 is described below: a. Method for transmitting a segment from a first station, a station being a vehicle, a road infrastructure or a personal device of a pedestrian, to a second station, the method comprising the steps of:
- geo-network packet a packet, called geo-network packet, from the segment, at least, the segment coming from a transport layer or from a layer higher than the transport layer, the geo-network packet being configured for be routed by multi-hop geographic routing within a short range network;
- the cellular packet being configured to be routed by cellular routing via a base station within a cellular network, the processing being implemented by a lower layer (56, 58, 60) or equal (48) to the network layer;
- the method according to a therefore makes possible the duplicate transmission of a segment by the short-range network based on geographic hopping routing and by the cellular network based on cellular routing.
- the redundancy thus introduced improves the transfer of the segment from the first station to the second station. Indeed, transit station failures and errors related to excessively long latencies are directly resolved whenever the cellular network is available to transfer the segment.
- the accuracy of many functions typically associated with the autonomous vehicle is improved. For example, to make a vehicle position given by a GNSS satellite navigation system reliable, a triangulation method using vehicle-to-vehicle communications is used. The duplication of the sending of the reliable segment greatly inter-vehicle distance data and thus the accuracy of the position measurement given by triangulation.
- the processing of the geo-network packet to generate the cellular packet being implemented at the network layer or below, the steps implemented for transmission are advantageously reduced. In particular, there is no need to double the processing steps of the transport and upper layers, which are very costly in terms of computing time and resources. For example, there is no need to sign segments / datagrams for the short-range network and for the cellular network.
- Such signature steps are particularly cumbersome for networks in charge of communications between stations of the vehicle type, road infrastructure and / or personal device of a pedestrian.
- processing of cooperative information messages, CAM for Cooperative Awareness Messages in English and decentralized environment notification messages, DENM for Decentralized Environmental Notification Message in English, or even RSA signatures introduce at the level of layers above the network layer delays of around 30 ms, for segments intended to be sent by geographic multi-hop routing.
- the transmission thus implemented thus significantly and effectively improves the possibilities of communication between stations, and in particular makes possible a very reliable communication which does not introduce processing steps which are costly in time and in computing resources.
- processing of the geo-network packet to generate a cellular packet means any type of processing from, in particular the geo-network packet to generate, in particular, the cell package.
- this characteristic is not limited to the generation of a single cellular packet by a single geo-network packet but also covers the generation of a cellular packet by several geo-network packets and other data or even the generation multiple cellular packets from a single geo-network packet.
- Road infrastructure means any infrastructure linked to or located in an environment close to a road, for any type of vehicle. Examples of road infrastructures are a toll barrier, a sign, a fence in a park or a processing center in charge of roads located in a particular geographic area.
- Method according to a in which the cellular packet is transmitted to the data link layer or to the layer lower than the data link layer for transmission to the second station by the short-range network or by the cellular network.
- the step of processing the geo-network packet comprises the sub-steps of: ⁇ generation of information for cellular routing via the base station within the cellular network;
- Method for receiving a segment by a second station a station being a vehicle, a road infrastructure or a personal device of a pedestrian, the segment having been transmitted by a first station, the method comprising the steps of:
- cellular packet transmitted by the first station, the cellular packet being configured to be routed by cellular routing via a base station within a cellular network;
- a geo-network packet being configured to be routed by a multi-hop geographic routing within a short range network;
- a redundancy check based on the duplicate reception of the packets can still be carried out, in particular a posteriori (once the first packet received has been transmitted to the application layers).
- a redundancy check based on the duplicate reception of the packets can still be carried out, in particular a posteriori (once the first packet received has been transmitted to the application layers).
- d Method according to d, in which the segment is generated from the geo-network packet, from among the first geo-network packet and the second geo-network packet, for which the result of a redundancy check is most favorable.
- the reliability of the transmission is then maximum, since the selection of the packet to be transmitted to the upper layers is made from the redundancy check, and no longer as a function of the first packet received.
- a station being a vehicle, a road infrastructure or a personal device of a pedestrian, transmitting a segment, from the first station to a second station, the device comprising at least one processor and a memory configured to perform the operations of:
- geo-network packet a packet, called geo-network packet, from the segment, at least, the segment coming from a transport layer or from a layer higher than the transport layer, the geo-network packet being configured for be routed by multi-hop geographic routing within a short range network;
- a cellular packet configured to be routed by cellular routing via a base station within a cellular network, the processing being implemented by a lower layer or equal to the network layer;
- l. device included in a second station a station being a vehicle, a road infrastructure or a personal device of a pedestrian, of reception of a segment by the second station from a first station, the device comprising at least a processor and a memory configured to perform the operations of:
- cellular packet transmitted by the first station, the cellular packet being configured to be routed by cellular routing via a base station within a cellular network;
- a geo-network packet being configured to be routed by a multi-hop geographic routing within a short range network
- Vehicle comprising the device according to the Q and / or l aspect.
- the present invention is not limited to the embodiments described above by way of examples; it extends to other variants.
- the stations were motor vehicles.
- the invention is not limited to such an example and the stations can also be a personal device of a pedestrian or a road infrastructure.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
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Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1857450A FR3084985A1 (fr) | 2018-08-10 | 2018-08-10 | Relai pour la convergence entre un routage geographique a sauts multiples et un routage cellulaire |
PCT/FR2019/051653 WO2020030861A1 (fr) | 2018-08-10 | 2019-07-04 | Relai pour la convergence entre un routage géographique à sauts multiples et un routage cellulaire |
Publications (1)
Publication Number | Publication Date |
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EP3834380A1 true EP3834380A1 (fr) | 2021-06-16 |
Family
ID=65201075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19746126.2A Withdrawn EP3834380A1 (fr) | 2018-08-10 | 2019-07-04 | Relai pour la convergence entre un routage géographique à sauts multiples et un routage cellulaire |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210345220A1 (fr) |
EP (1) | EP3834380A1 (fr) |
CN (1) | CN112567697A (fr) |
FR (1) | FR3084985A1 (fr) |
WO (1) | WO2020030861A1 (fr) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7545780B2 (en) * | 2002-05-28 | 2009-06-09 | Interdigital Technology Corporation | Flow-based selective reverse tunneling in wireless local area network (WLAN)-cellular systems |
US8451752B2 (en) * | 2007-05-21 | 2013-05-28 | Arrowspan, Inc. | Seamless handoff scheme for multi-radio wireless mesh network |
CN101925122B (zh) * | 2009-06-12 | 2014-10-08 | 株式会社日立制作所 | 用于车辆无线通信网络中的有效数据传输的装置和方法 |
US9495870B2 (en) * | 2011-10-20 | 2016-11-15 | At&T Intellectual Property I, L.P. | Vehicular communications using a scalable ad hoc geographic routing protocol |
KR101816799B1 (ko) * | 2014-03-27 | 2018-01-11 | 노키아 솔루션스 앤드 네트웍스 오와이 | 5세대 모바일 네트워크들에서의 온디맨드 네트워크 서비스 |
US9832706B2 (en) * | 2014-07-30 | 2017-11-28 | Nec Corporation | Information dissemination in a multi-technology communication network |
WO2017028030A1 (fr) * | 2015-08-14 | 2017-02-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Réacheminement de message assisté par réseau |
US20170295471A1 (en) * | 2016-04-07 | 2017-10-12 | Industrial Technology Research Institute | Access point in geographic routing system and controlling method thereof |
WO2020022526A1 (fr) * | 2018-07-23 | 2020-01-30 | 엘지전자 주식회사 | Dispositif de communication v2x et procédé de transmission par géoroutage |
-
2018
- 2018-08-10 FR FR1857450A patent/FR3084985A1/fr not_active Withdrawn
-
2019
- 2019-07-04 EP EP19746126.2A patent/EP3834380A1/fr not_active Withdrawn
- 2019-07-04 WO PCT/FR2019/051653 patent/WO2020030861A1/fr unknown
- 2019-07-04 US US17/266,919 patent/US20210345220A1/en not_active Abandoned
- 2019-07-04 CN CN201980053884.8A patent/CN112567697A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3084985A1 (fr) | 2020-02-14 |
US20210345220A1 (en) | 2021-11-04 |
WO2020030861A1 (fr) | 2020-02-13 |
CN112567697A (zh) | 2021-03-26 |
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