# US 2013/0156017 A1 · Terminal apparatus for transmitting or receiving a signal including predetermined information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156017 A1 - Document ID: US20130156017A1 - Status: Published application - Kind: A1 - Application number: 13/770,845 - Filed: 2013-02-19 - Published: 2013-06-20 - Earliest claimed: 2010-12-28 - Assignees: Sanyo Electric Co., Ltd. - Inventors: Yoshihiro HORI; Yuichi KANAI; Makoto NAGAI - Web page: https://patentgrep.com/patent/US20130156017A1 ## CPC - H04J 3/1694: {Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers (Passive Optical Networks H04Q11/0062)} - G08G 1/0965: responding to signals from another vehicle, e.g. emergency vehicle - 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 1/163: {involving continuous checking} - H04L 9/3247: {involving digital signatures} - H04W 88/02: Terminal devices - H04L 63/0823: {using certificates (cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263)} - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 4/44: for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H] - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - 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}) - 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 A reception unit periodically receives a packet signal from a base station apparatus in each of two or more subframes in a superframe formed by time-multiplexing the subframes. An analysis unit gives a priority order to a subframe receiving the packet signal from the base station apparatus based on the packet signal received in the reception unit. A processing unit preferentially processes the packet signal received in the subframe with a high priority order among the priority orders given in the analysis unit. ## Claims ### Claim 1 A terminal apparatus comprising: a reception unit configured to periodically receive a packet signal from a base station apparatus in each of two or more subframes in a superframe formed by time-multiplexing the subframes; an analysis unit configured to give a priority order to a subframe receiving the packet signal from the base station apparatus based on the packet signal received in the reception unit; and a processing unit configured to preferentially process the packet signal received in the subframe with a high priority order among the priority orders given in the analysis unit. ### Claim 2 (depends on 1) The terminal apparatus according to claim 1, wherein position information on a apparatus as a transmission source is contained in the packet signal received in the reception unit, the terminal apparatus further comprises an acquisition unit that acquires position information on the terminal apparatus, and the analysis unit gives priority orders based on the position information on the transmission source contained in the packet signal received in the reception unit and the position information acquired in the acquisition unit. ### Claim 3 (depends on 1) The terminal apparatus according to claim 1, wherein the terminal apparatus further comprises a measurement unit that measuring reception power per subframe, and the analysis unit gives priority orders based on the reception power measured in the measurement unit. ### Claim 4 (depends on 1) The terminal apparatus according to claim 1, wherein the analysis unit divides a plurality of subframes contained in a superframe into two or more groups, and independently gives priority orders per divided group. ### Claim 5 (depends on 1) The terminal apparatus according to claim 1, wherein the processing unit sets a verification timing per subframe from the base station apparatus at a thinning rate depending on the priority order given per subframe from the base station apparatus in the analysis unit, and performs a verification processing on an electronic signature contained in the packet signal received in the subframe from the base station apparatus at the verification timing. ### Claim 6 (depends on 5) The terminal apparatus according to claim 5, wherein the processing unit further performs a public key certificate verification processing, and performs either one of the public key certificate verification processing and the electronic signature verification processing at the verification timing. ### Claim 7 (depends on 1) The terminal apparatus according to claim 1, wherein the processing unit performs the verification processing on an electronic signature contained in a packet signal, and when the verification processing performed in the processing unit is determined to be invalid, the analysis unit lowers a priority order of a subframe receiving the packet signal among the subframes contained in a next superframe. ### Claim 8 A communication apparatus comprising: a generation unit configured to generate an electronic signature by a private key based on at least a security header and a payload; an encryption unit configured to perform an encryption processing on at least the payload and a security footer; and an output unit configured to output a security frame in which at least the security header, the payload and the security footer are arranged, wherein the security header to be subjected to an electronic signature to be generated by the generation unit contains a public key certificate, and the private key corresponding to the public key certificate is used for generating the electronic signature, the encryption unit excludes the security header from the encryption processing, and the security footer contains the electronic signature generated in the generation unit, and the encryption processing is performed on the payload and the security footer in the security frame output from the output unit by the encryption unit.