# US 2018/0025630 A1 · Roadside communication device, data relay method, central apparatus, computer program, and data processing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025630 A1 - Document ID: US20180025630A1 - Status: Published application - Kind: A1 - Application number: 15/550,420 - Filed: 2016-03-09 - Published: 2018-01-25 - Earliest claimed: 2015-03-10 - Assignees: Sumitomo Electric Industries, Ltd. - Applicants: Sumitomo Electric Industries, Ltd. - Inventors: Hiroshi MATSUMOTO; Shigeki UMEHARA; Masafumi KOBAYASHI - Web page: https://patentgrep.com/patent/US20180025630A1 ## CPC - G08G 1/0112: {from the vehicle, e.g. floating car data [FCD]} - G08G 1/0116: {from roadside infrastructure, e.g. beacons} - G08G 1/0133: {for classifying traffic situation} - G08G 1/0145: {for active traffic flow control} - G08G 1/065: by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count - G08G 1/08: according to detected number or speed of vehicles - G08G 1/081: Plural intersections under common control - G08G 1/096716: {where the received information does not generate an automatic action on the vehicle control} - G08G 1/096758: {where no selection takes place on the transmitted or the received information} - G08G 1/096775: {where the origin of the information is a central station} - G08G 1/096783: {where the origin of the information is a roadside individual element} - 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}) ## Abstract A roadside communication device having a data relay function includes a receiving unit that receives mobile object data whose generator is a mobile object; a relay unit capable of relaying the mobile object data, the relaying involving a thinning process of an amount of data; and a transmitting unit that transmits thinning information about an execution status of the thinning process to an external device. ## Claims ### Claim 1 A roadside communication device having a data relay function, the roadside communication device comprising: a receiving unit that receives mobile object data whose generator is a mobile object; a relay unit capable of relaying the mobile object data, the relaying involving a thinning process of an amount of data; and a transmitting unit that transmits thinning information about an execution status of the thinning process to an external device. ### Claim 2 (depends on 1) The roadside communication device according to claim 1, wherein the thinning information includes thinning execution information indicating whether the thinning process has been executed. ### Claim 3 (depends on 1) The roadside communication device according to claim 1, wherein the thinning information includes thinning condition information that allows to identify a thinning condition actually used in the thinning process. ### Claim 4 (depends on 1) The roadside communication device according to claim 1, wherein the thinning information includes number-of-mobile-object information indicating a number of mobile objects each of which is a generator of mobile object data received before the thinning process. ### Claim 5 (depends on 1) The roadside communication device according to claim 1, wherein the thinning information includes processing load information indicating a processing load of the roadside communication device. ### Claim 6 A data relay method for a roadside communication device having a data relay function, the data relay method comprising: a first step of receiving, by a receiving unit of the roadside communication device, mobile object data whose generator is a mobile object; a second step of relaying the mobile object data by a relay unit of the roadside communication device, the relaying involving a thinning process of an amount of data; and a third step of transmitting, by a transmitting unit of the roadside communication device, thinning information about an execution status of the thinning process to an external device. ### Claim 7 A central apparatus capable of obtaining mobile object data whose generator is a mobile object, from a roadside communication device having a data relay function involving a thinning process of an amount of data, the central apparatus comprising: a communication unit that receives thinning information about an execution status of the thinning process from the roadside communication device; and a control unit that performs a predetermined process based on the thinning information received by the communication unit. ### Claim 8 (depends on 7) The central apparatus according to claim 7, further comprising a thinning execution instructing unit that outputs an instruction on execution of the thinning process to the roadside communication device, wherein the thinning information includes thinning execution information indicating whether the thinning process has been executed, and as the predetermined process, the control unit detects an abnormality in the thinning process by comparing the instruction outputted by the thinning execution instructing unit with the thinning execution information. ### Claim 9 (depends on 7) The central apparatus according to claim 7, further comprising a thinning condition instructing unit that outputs an instruction on a thinning condition of the thinning process to the roadside communication device, wherein the thinning information includes thinning condition information that allows to identify a thinning condition actually used by the roadside communication device, and as the predetermined process, the control unit detects an abnormality in the thinning process by comparing the instruction outputted by the thinning condition instructing unit with the thinning condition information. ### Claim 10 (depends on 7) The central apparatus according to claim 7, wherein the thinning information includes at least one of thinning execution information, thinning condition information, and processing load information, the thinning execution information indicating whether the thinning process has been executed, the thinning condition information allowing to identify a thinning condition actually used by the roadside communication device, and the processing load information indicating a processing load of the roadside communication device, and as the predetermined process, the control unit determines, for at least one of a traffic flow diagnosis process and a calculation process for various amounts of traffic, whether the process can be performed, based on the thinning information. ### Claim 11 (depends on 7) The central apparatus according to claim 7, wherein the thinning information includes number-of-mobile-object information indicating a number of mobile objects each of which is a generator of mobile object data relayed by the roadside communication device before the thinning process, and as the predetermined process, the control unit calculates various amounts of traffic based on the number-of-mobile-object information. ### Claim 12 (depends on 7) The central apparatus according to claim 7, further comprising a thinning condition instructing unit that outputs an instruction on a thinning condition of the thinning process to the roadside communication device, wherein the thinning information includes processing load information indicating a processing load of the roadside communication device, and as the predetermined process, the control unit changes the thinning condition to be instructed to the roadside communication device, according to the processing load information. ### Claim 13 A computer program for causing a computer to perform a process to be performed by a central apparatus capable of obtaining mobile object data whose generator is a mobile object, from a roadside communication device having a data relay function involving a thinning process of an amount of data, the computer program causing the computer to function as: a communication unit that receives thinning information about an execution status of the thinning process from the roadside communication device; and a control unit that performs a predetermined process based on the thinning information received by the communication unit. ### Claim 14 A data processing method for a central apparatus capable of obtaining mobile object data whose generator is a mobile object, from a roadside communication device having a data relay function involving a thinning process of an amount of data, the data processing method comprising: a first step of receiving, by a communication unit of the central apparatus, thinning information about an execution status of the thinning process from the roadside communication device; and a second step of performing, by a control unit of the central apparatus, a predetermined process based on the thinning information received by the communication unit.