# US 2018/0324565 A1 · Intelligent transportation system, host processor, vehicle and method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324565 A1 - Document ID: US20180324565A1 - Status: Published application - Kind: A1 - Application number: 15/964,124 - Filed: 2018-04-27 - Published: 2018-11-08 - Earliest claimed: 2017-05-02 - Assignees: NXP B.V. - Applicants: NXP B.V. - Inventors: CHETAN BELAGAL MATH; Hong Li; Sonia Heemstra de Groot - Web page: https://patentgrep.com/patent/US20180324565A1 ## CPC - H04W 4/46: for vehicle-to-vehicle communication [V2V] - H04L 12/18: for broadcast or conference {, e.g. multicast} - H04L 12/1881: {with schedule organisation, e.g. priority, sequence management} - H04L 43/0894: Packet rate - H04W 4/046 - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 28/0284: {detecting congestion or overload during communication (monitoring arrangements H04L43/00)} - G08G 1/096791: {where the origin of the information is another vehicle} - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04W 52/46: in multi-hop networks, e.g. wireless relay networks - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - Y04S 40/00: Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them - Y04S 40/18: Network protocols supporting networked applications, e.g. including control of end-device applications over a network - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) - Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ## Abstract An intelligent transportation system (ITS 400) for a vehicle (200) is described. The ITS includes a packet count estimator (420) arranged to receive broadcast ITS transmissions from a plurality of neighbouring vehicles and provide an indication of a number of packets received from the plurality of neighbouring vehicles, where the indication includes at least an information length and a data rate of the received packets; a fair resource allocator circuit (410) operably coupled to the packet count estimator and configured to adjust at least one ITS broadcast transmission parameter of the ITS based on the indication of the number of received packets; and a transmitter operably coupled to the fair resource allocator circuit (410) and configured to broadcast at least one ITS message using the adjusted at least one ITS broadcast transmission parameter. ## Claims ### Claim 1 An intelligent transportation system, ITS, for a vehicle, the ITS comprising: a packet count estimator arranged to receive broadcast ITS transmissions from a plurality of neighbouring vehicles and provide an indication of a number of packets received from the plurality of neighbouring vehicles, where the indication includes at least an information length and a data rate of the received packets; a fair resource allocator circuit operably coupled to the packet count estimator and configured to adjust at least one ITS broadcast transmission parameter of the ITS based on the indication of the number of received packets; and a transmitter operably coupled to the fair resource allocator circuit and configured to broadcast at least one ITS message using the adjusted at least one ITS broadcast transmission parameter. ### Claim 2 (depends on 1) The ITS of claim 1 wherein the packet count estimator is configured to receive physical layer information of the broadcast ITS transmissions and determine therefrom the number of packets received from the plurality of neighbouring vehicles. ### Claim 3 (depends on 1) The ITS of claim 1 wherein the at least one ITS broadcast transmission parameter is from a group of: transmission data-rate, transmission message-rate, transmit power. ### Claim 4 (depends on 1) The ITS of claim 1 further comprising a channel busy ratio, CBR, circuit arranged to sense when a communication channel is being used to receive ITS information and provide an indication of a time that the channel is in use, wherein the packet count estimator is configured to use the indication of time, together with the indication of at least an information length and a data rate of the received packets, in a determination of a number of packets received from the, or each of the, plurality of neighbouring vehicles. ### Claim 5 (depends on 1) The ITS of claim 1 further comprising a memory coupled to the fair resource allocator circuit and the packet count estimator and arranged to store at least one of: packet count data, ITS broadcast transmission parameter data, an indication of at least an information length and a data rate of the received packets, wherein the fair resource allocator circuit is configured to adjust at least one ITS broadcast transmission parameter of the ITS based on at least a portion of the stored data. ### Claim 6 (depends on 1) The ITS of claim 1, wherein a packet count estimation performed by packet count estimator is based on a total of: packets sent, packets received, and a total number of packets sensed by the physical layer, while at least one communication channel employed by the ITS is busy. ### Claim 7 (depends on 6) The ITS of claim 6, wherein the total packet count is determined over a specified time period (θ) whilst the vehicle is not sending ITS packets. ### Claim 8 (depends on 1) The ITS of claim 1 further comprising a microcontroller or a host processor configured to comprise the fair resource allocator circuit and the packet count estimator. ### Claim 9 (depends on 8) The ITS of claim 8 wherein the microcontroller or the host processor is configured to provide an indication of the adjusted at least one ITS broadcast transmission parameter to a vehicle to roadside (V2X) infrastructure or on a vehicle to vehicle (V2V) basis. ### Claim 10 (depends on 1) The ITS of claim 1 wherein the ITS supports a plurality of different data rates and the fair resource allocator circuit switches the ITS broadcast transmission parameter between two of the plurality of different data rates based on at least in part the indication of the number of received packets. ### Claim 11 A host processor for an intelligent transportation system, ITS, for a vehicle, the host processor comprising: a packet count estimator arranged to receive broadcast ITS transmissions from a plurality of neighbouring vehicles and provide an indication of a number of packets received from the plurality of neighbouring vehicles, where the indication includes at least an information length and a data rate of the received packets; and a fair resource allocator circuit operably coupled to the packet count estimator and configured to adjust at least one ITS broadcast transmission parameter of the ITS based on the indication of a number of received packets. ### Claim 12 A method for operating an intelligent transportation system, ITS, for a vehicle, the method comprising: receiving broadcast ITS transmissions from a plurality of neighbouring vehicles; providing an indication of a number of packets received from the plurality of neighbouring vehicles; adjusting at least one ITS broadcast transmission parameter of the ITS based on the indication of the number of received packets; and broadcasting at least one ITS message using the adjusted at least one ITS broadcast transmission parameter. ### Claim 13 (depends on 11) The host processor of claim 11 further comprising: a transmitter operably coupled to the fair resource allocator circuit and configured to broadcast at least one ITS message using the adjusted at least one ITS broadcast transmission parameter. ### Claim 14 (depends on 11) The host processor of claim 11 wherein the packet count estimator is configured to receive physical layer information of the broadcast ITS transmissions and determine therefrom the number of packets received from the plurality of neighbouring vehicles. ### Claim 15 (depends on 14) The host processor of claim 14 wherein the at least one ITS broadcast transmission parameter is from a group of: transmission data-rate, transmission message-rate, transmit power. ### Claim 16 (depends on 14) The host processor of claim 14 further comprising a memory coupled to the fair resource allocator circuit and the packet count estimator and arranged to store at least one of: packet count data, ITS broadcast transmission parameter data, an indication of at least an information length and a data rate of the received packets, wherein the fair resource allocator circuit is configured to adjust at least one ITS broadcast transmission parameter of the ITS based on at least a portion of the stored data. ### Claim 17 (depends on 14) The host processor of claim 14 wherein the host processor is configured to provide an indication of the adjusted at least one ITS broadcast transmission parameter to a vehicle to roadside (V2X) infrastructure or on a vehicle to vehicle (V2V) basis. ### Claim 18 (depends on 14) The host processor of claim 14 wherein the ITS supports a plurality of different data rates and the fair resource allocator circuit switches the ITS broadcast transmission parameter between two of the plurality of different data rates based on at least in part the indication of the number of received packets. ### Claim 19 (depends on 11) The host processor of claim 11 further comprising a channel busy ratio, CBR, circuit arranged to sense when a communication channel is being used to receive ITS information and provide an indication of a time that the channel is in use, wherein the packet count estimator is configured to use the indication of time, together with the indication of at least an information length and a data rate of the received packets, in a determination of a number of packets received from the, or each of the, plurality of neighbouring vehicles. ### Claim 20 (depends on 11) The host processor of claim 11 wherein a packet count estimation performed by packet count estimator is based on a total of: packets sent, packets received, and a total number of packets sensed by the physical layer, while at least one communication channel employed by ITS is busy.