# US 9,882,880 B2 · Communication apparatus, method for controlling the same, and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,882,880 B2 - Document ID: US9882880B2 - Status: Granted - Kind: B2 - Application number: 14/258,983 - Filed: 2014-04-22 - Published: 2014-10-30 - Granted: 2018-01-30 - Earliest claimed: 2013-04-24 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Fumihide Goto - Web page: https://patentgrep.com/patent/US9882880B2 ## CPC - H04L 63/0428: {wherein the data content is protected, e.g. by encrypting or encapsulating the payload} - H04L 63/08: {for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32)} - H04L 67/51: Discovery or management thereof, e.g. service location protocol [SLP] or web services - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A communication apparatus acquires information about a service provided by another communication apparatus and identifies a service executable between the communication apparatus and the another communication apparatus based on the acquired information and a service executable by the communication apparatus. If a plurality of services is identified, the communication apparatus controls a port corresponding to each of the plurality of the identified services. ## Claims ### Claim 1 A communication apparatus comprising: a memory storing instructions; and one or more processors that execute the instructions and cause the one or more processors to operate as: a search unit configured to search for another communication apparatus capable of wireless LAN communication conforming to the IEEE802.11 standard series by transmitting a probe request signal in the wireless LAN conforming to the IEEE802.11 standard series; a transmission unit configured to transmit, to the another communication apparatus searched by said search unit, a service discovery signal in the wireless LAN conforming to the IEEE802.11 standard series; an acquisition unit configured to acquire, from a service discovery response signal in response to the service discovery signal transmitted by said transmission unit, information about a service of an application layer provided by the another communication apparatus; a comparing unit configured to compare a service indicated by the information acquired by said acquisition unit and a service which the communication apparatus can execute; a connecting unit configured to execute processing to establish connection with the another communication apparatus by the wireless LAN based on the information acquired by the acquisition unit; a processing unit configured to execute processing to set an IP address to the communication apparatus after the connection with the another communication apparatus by the wireless LAN is established; and a control unit configured to collectively open a plurality of Transmission Control Protocol (TCP) ports or a plurality of User Datagram Protocol (UDP) ports corresponding to a plurality of the respective services common to both the apparatuses, without executing a service search process in an IP layer, based on a result of the comparison performed by the comparing unit in response to setting of the IP address to the communication apparatus by the processing unit, if a plurality of services is identified by the acquisition unit. ### Claim 2 (depends on 1) The communication apparatus according to claim 1, wherein said acquisition unit acquires information indicating whether the another communication apparatus can provide a service specified by a user. ### Claim 3 (depends on 1) The communication apparatus according to claim 1, wherein an application layer is referred to as a service provision layer in a layer equal to or upper than a fifth layer in an open systems interconnection (OSI) reference model. ### Claim 4 (depends on 1) The communication apparatus according to claim 1, wherein the service is at least any of a printing service, a moving image streaming service, or a file transfer service. ### Claim 5 (depends on 1) The communication apparatus according to claim 1, wherein the wireless LAN conforming to the IEEE802.11 standard series includes Wi-Fi Direct. ### Claim 6 (depends on 1) The communication apparatus according to claim 1, wherein, if a plurality of services is identified by the acquisition unit, the control unit opens a port corresponding to each of the plurality of the identified services. ### Claim 7 A method for controlling a communication apparatus, the method comprising: searching for another communication apparatus capable of wireless LAN communication conforming to the IEEE802.11 standard series by transmitting a probe request signal in the wireless LAN conforming to the IEEE802.11 standard series; transmitting, to the another communication apparatus searched, a service discovery signal in the wireless LAN conforming to the IEEE802.11 standard series; acquiring, from a service discovery response signal in response to the transmitted service discovery signal, information about a service of an application layer provided by the another communication apparatus; comparing a service indicated by the acquired information and a service which the communication apparatus can execute; establishing connection with the another communication apparatus by the wireless LAN based on the acquired information; setting an IP address to the communication apparatus after the connection with the another communication apparatus by the wireless LAN is established; and collectively opening a plurality of Transmission Control Protocol (TCP) ports or a plurality of User Datagram Protocol (UDP) ports corresponding to a plurality of the respective services common to both of the apparatuses without executing a service search process in an IP layer, based on a result of the comparison in response to setting of the IP address to the communication apparatus, if a plurality of services is identified. ### Claim 8 A non-transitory computer readable storage medium storing computer executable instructions for causing a computer to execute a method, the method comprising: searching for another communication apparatus capable of wireless LAN communication conforming to the IEEE802.11 standard series by transmitting a probe request signal in the wireless LAN conforming to the IEEE802.11 standard series; transmitting, to the another communication apparatus searched, a service discovery signal in the wireless LAN conforming to the IEEE802.11 standard series; acquiring, from a service discovery response signal in response to the transmitted service discovery signal, information about a service of an application layer provided by the another communication apparatus; comparing a service indicated by the acquired information and a service which the communication apparatus can execute; establishing connection with the another communication apparatus by the wireless LAN based on the acquired information; setting an IP address to the communication apparatus after the connection with the another communication apparatus by the wireless LAN is established; and collectively opening a plurality of Transmission Control Protocol (TCP) ports or a plurality of User Datagram Protocol (UDP) ports corresponding to a plurality of the respective services common to both of the apparatuses, without executing a service search process in an IP layer, based on a result of the comparison in response to setting of the IP address to the communication apparatus, if a plurality of services is identified. ### Claim 9 A communication apparatus comprising: a memory storing instructions; and one or more processors that execute the instructions and cause the one or more processors to operate as: a search unit configured to search for another communication apparatus capable of wireless LAN communication conforming to the IEEE802.11 standard series by transmitting a probe request signal in the wireless LAN conforming to the IEEE802.11 standard series; an acquisition unit configured to acquire, from a probe response signal in response to the probe request signal, information about a service of an application layer provided by the another communication apparatus; a comparing unit configured to compare a service indicated by the information acquired by said acquisition unit and a service which the communication apparatus can execute; a connection unit configured to execute processing to establish connection with the another communication apparatus by the wireless LAN based on the information acquired by the acquisition unit; a processing unit configured to execute processing to set an IP address to the communication apparatus after the connection with the another communication apparatus by the wireless LAN is established, and a control unit configured to collectively open a plurality of Transmission Control Protocol (TCP) ports or a plurality of User Datagram Protocol (UDP) ports corresponding to a plurality of the respective services common to both of the apparatuses, without executing a service search process in an IP layer, based on a result of the comparison performed by the comparing unit in response to setting of the IP address to the communication apparatus by the processing unit, if a plurality of services is identified by the acquisition unit. ### Claim 10 (depends on 9) The communication apparatus according to claim 9, wherein said acquisition unit acquires information indicating whether the another communication apparatus can provide a service specified by a user. ### Claim 11 (depends on 9) The communication apparatus according to claim 9, wherein the application layer is referred to as a service provision layer in a layer equal to or upper than a fifth layer in an open systems interconnection (OSI) reference model. ### Claim 12 (depends on 9) The communication apparatus according to claim 9, wherein the service is at least any of a printing service, a moving image streaming service, or a file transfer service. ### Claim 13 (depends on 9) The communication apparatus according to claim 9, wherein the wireless LAN conforming to the IEEE802.11 standard series includes Wi-Fi Direct. ### Claim 14 (depends on 9) The communication apparatus according to claim 9, wherein, if a plurality of services is identified by the acquisition unit, the control unit opens a port corresponding to each of the plurality of the identified services. ### Claim 15 A method for controlling a communication apparatus, the method comprising: searching for another communication apparatus capable of wireless LAN communication conforming to the IEEE802.11 standard series by transmitting a probe request signal in the wireless LAN conforming to the IEEE802.11 standard series; acquiring, from a probe response signal in response to the probe request signal, information about a service of an application layer provided by the another communication apparatus; comparing a service indicated by the acquired information and a service which the communication apparatus can execute; establishing connection with the another communication apparatus by the wireless LAN based on the acquired information; setting an IP address to the communication apparatus after the connection with the another communication apparatus by the wireless LAN is established, and collectively opening a plurality of Transmission Control Protocol (TCP) ports or a plurality of User Datagram Protocol (UDP) ports corresponding to a plurality of the respective services common to both of the apparatuses, without executing a service search process in an IP layer, based on a result of the performed comparison in response to setting the IP address to the communication apparatus, if a plurality of services is identified. ### Claim 16 A non-transitory computer readable storage medium storing computer executable instructions for causing a computer to execute a method, the method comprising: searching for another communication apparatus capable of wireless LAN communication conforming to the IEEE802.11 standard series by transmitting a probe request signal in the wireless LAN conforming to the IEEE802.11 standard series; acquiring, from a probe response signal in response to the probe request signal, information about a service of an application layer provided by the another communication apparatus; comparing a service indicated by the acquired information and a service which the communication apparatus can execute; establishing connection with the another communication apparatus by the wireless LAN based on the acquired information; setting an IP address to the communication apparatus after the connection with the another communication apparatus by the wireless LAN is established, and collectively opening a plurality of Transmission Control Protocol (TCP) ports or a plurality of User Datagram Protocol (UDP) ports corresponding to a plurality of the respective services common to both of the apparatuses, without executing a service search process in an IP layer, based on a result of the performed comparison in response to setting the IP address to the communication apparatus, if a plurality of services is identified.