# US 2021/0345220 A1 · Relay for convergence between multi-hop geographical routing and cellular routing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345220 A1 - Document ID: US20210345220A1 - Status: Published application - Kind: A1 - Application number: 17/266,919 - Filed: 2019-07-04 - Published: 2021-11-04 - Earliest claimed: 2018-08-10 - Assignees: Psa Automobiles SA - Applicants: Psa Automobiles SA - Inventors: Saleh BENSATOR; Stefano MAFRICA; Alain SERVEL - Web page: https://patentgrep.com/patent/US20210345220A1 ## CPC - H04L 12/4633: {Interconnection of networks using encapsulation techniques, e.g. tunneling} - H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04W 84/005: {Moving wireless networks} - H04W 88/04: adapted for relaying to or from another terminal or user - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The invention relates to a method for relaying an item of useful data by way of a transit station (SR), the item of useful data passing via the transit station from a first station (S1) to a second station (S2), wherein a station is a vehicle, a road infrastructure or a personal device of a pedestrian. ## Claims ### Claim 1 A method for relaying an item of useful data by way of a transit station, the item of useful data passing through the transit station from a first station to a second station, each of said stations being a vehicle, a road infrastructure, or a personal device of a pedestrian, the method comprising the steps, implemented by the transit station, of: receiving from the first station and by means of a short-range network based on multi-hop geographic routing a geo-network packet, the geo-network packet comprising the item of useful data and being configured to be routed by the multi-hop geographic routing of the short-range network; processing the geo-network packet in order to generate a cellular packet, the cellular packet comprising the item of 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 that is lower than or equal to the network layer; transmitting the cellular packet to the second station via the cellular network. ### Claim 2 (depends on 1) The method according to claim 1, wherein the step of processing the geo-network packet comprises the sub-steps of: generating information for cellular routing through the base station within the cellular network; adding to the geo-network packet a header comprising the information for cellular routing. ### Claim 3 (depends on 2) The method according to claim 2, wherein the geo-network packet comprises the useful data and information for multi-hop geographic routing, and wherein the information for cellular routing is obtained from the information for geographic routing. ### Claim 4 (depends on 2) The method according to claim 2, wherein the geo-network packet comprises the useful data and information for multi-hop geographic routing, wherein the information for cellular routing is obtained from the information for geographic routing, and wherein 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-network packet. ### Claim 5 (depends on 1) The method according to claim 1, wherein a verification of a transit authorization criterion is performed prior to the processing step, and the processing and transmission steps are not implemented in the event that the verification is negative, wherein the transit authorization criterion being at least one of the following elements: a fixed control parameter; a variable control parameter; a criticality parameter for the item of useful data; a type of station. ### Claim 6 (depends on 5) The method according to claim 5, wherein the transit authorization criterion comprises at least the variable control parameter, wherein the variable control parameter is updated in at least one of the following situations: updating at the predetermined interval; updating during a station maintenance operation; powering-on of the station. ### Claim 7 A method for relaying an item of useful data by way of a transit station, the item of useful data passing through the transit station from a first station to a second station, each of said stations being a vehicle, a road infrastructure, or a personal device of a pedestrian, the method comprising the steps, implemented by the transit station, of: receiving from the first station and by means of a cellular network (62) based on cellular routing via at least one base station a cellular packet, the cellular packet comprising the item of useful data and being configured to be routed by cellular routing within the cellular network; processing the cellular packet in order to generate a geo-network packet, the geo-network packet comprising the item of useful data and being configured to be routed by multi-hop geographic routing on a short-range network, the processing being implemented by a layer that is lower than or equal to the network layer; transmitting the geo-network packet to the second station via the short-range network. ### Claim 8 (depends on 7) The method according to claim 7, wherein the step of processing the cellular packet comprises extracting the geo-network packet from the cellular packet, and wherein the extraction is performed by removing a header from the cellular packet, the header comprising information for cellular routing via the base station within the cellular network. ### Claim 9 (depends on 7) The method according to claim 7, wherein a verification of a transit authorization criterion is performed prior to the processing step, and the processing and transmission steps are not implemented in the event that the verification is negative, the transit authorization criterion being at least one of the following elements: a fixed control parameter; a variable control parameter; a criticality parameter for the item of useful data; a type of station. ### Claim 10 (depends on 9) The method according to claim 9, wherein the transit authorization criterion comprises at least the variable control parameter, the variable control parameter being updated in at least one of the following situations: updating at the predetermined interval; updating during a station maintenance operation; powering-on of the station. ### Claim 11 (depends on 1) A computer program comprising instructions for implementing the method according to claim 1 when these instructions are executed by a processor. ### Claim 12 A device for relaying an item of useful data that is connected to a transit station, the item of useful data passing through the transit station from a first station to a second station, each of said stations being a vehicle, a road infrastructure, or a personal device of a pedestrian, the device comprising at least one processor and one memory designed to perform the operations of: receiving from the first station and by means of a short-range network (54) based on multi-hop geographic routing a geo-network packet, the geo-network packet comprising the item of useful data and being configured to be routed by the multi-hop geographic routing of the short-range network; processing the geo-network packet in order to generate a packet, called a cellular packet, the cellular packet comprising the item of useful data and being configured to be routed by cellular routing via at least one base station within a cellular network (62), the processing being implemented by a layer that is lower than or equal to the network layer; transmitting the cellular packet to the second station via the cellular network. ### Claim 13 A device for relaying an item of useful data that is connected to a transit station, the item of useful data passing through the transit station from a first station to a second station, each said station being a vehicle, a road infrastructure, or a personal device of a pedestrian, the device comprising at least one processor and one memory designed to perform the operations of: receiving from the first station and by means of a cellular network (62) based on cellular routing via at least one base station a packet a cellular packet, the cellular packet comprising the item of useful data and being configured to be routed by cellular routing within the cellular network; processing the cellular packet in order to generate a geo-network packet, the geo-network packet comprising the item of useful data and being configured to be routed by multi-hop geographic routing on a short-range network (54), the processing being implemented by a layer that is lower than (50, 52) or equal (48) to the network layer; transmitting the geo-network packet to the second station via the short-range network.