Abstract: A communication apparatus determines whether the communication apparatus plays a role of capturing an image based on predetermined information indicating whether a communication partner apparatus plays the role of capturing an image in a sharing process executed based on the predetermined information which is supplied to establish from the captured image, and establishes the wireless connection with the communication partner apparatus by Wi-Fi Direct based on the communication parameters shared by the sharing process with the communication partner apparatus in accordance with the determination.

Abstract: A base station includes a reception unit that receives a first communication parameter including first security information and an identifier of a first wireless network established by another base station, a generation unit that generates second security information in which a security method defined in the first security information is changed to a security method having a higher security level, and an establishment unit that establishes a second wireless network that uses a second communication parameter including the identifier and the second security information and has the identifier.

Abstract: A communication apparatus includes a receiving unit that receives, from a first base station via wireless communication, a first communication parameter including an identifier and first security information about a first wireless network configured by the first base station, and a transmitting unit that transmits, via wireless communication, a communication parameter including the identifier to a second base station.

Abstract: A communication apparatus determines whether the communication apparatus plays a role of capturing an image based on predetermined information indicating whether a communication partner apparatus plays the role of capturing an image in a sharing process executed based on the predetermined information which is supplied to establish from the captured image, and establishes the wireless connection with the communication partner apparatus by Wi-Fi Direct based on the communication parameters shared by the sharing process with the communication partner apparatus in accordance with the determination.

Abstract: A communication apparatus includes a first detection unit configured to detect a service executable by another communication apparatus based on a communication in a first communication layer before the communication apparatus constructs a network with the another communication apparatus. The communication apparatus further includes a second detection unit configured to detect a service executable by the another communication apparatus based on a communication in a second communication layer that is different from the first communication layer after the communication apparatus has been wirelessly connected to the another communication apparatus, if a detection result obtained by the first detection unit does not indicate that the another communication apparatus is capable of executing a predetermined service.

Abstract: In a case where a communication apparatus fails in authentication when acquiring communication parameters from another communication apparatus and where it is determined that an authentication request signal received from the other communication apparatus has been transmitted by unicast, the communication apparatus notifies said other communication apparatus of an error. On the other hand, even in a case where the communication apparatus fails in authentication, when it is determined that the authentication request signal received from the other communication apparatus has not been transmitted by unicast, the communication apparatus does not notify said other communication apparatus of an error.

Abstract: In a case where a communication apparatus fails in authentication when acquiring communication parameters from another communication apparatus and where it is determined that an authentication request signal received from the other communication apparatus has been transmitted by unicast, the communication apparatus notifies said other communication apparatus of an error. On the other hand, even in a case where the communication apparatus fails in authentication, when it is determined that the authentication request signal received from the other communication apparatus has not been transmitted by unicast, the communication apparatus does not notify said other communication apparatus of an error.

Abstract: A communication apparatus, in a first period which is a Discovery Window defined in Neighbor Awareness Networking (NAN), in a case when a signal for searching for a predetermined service or a reply corresponding to the signal is communicated with another communication apparatus, determines whether there is a communication parameter that was shared with the other communication apparatus, in a case when it is determined by the determination unit that there is a communication parameter shared with the other communication apparatus, uses the shared communication parameter to establish a data link with the other communication apparatus, and, in a second period including a period different to the first period, executes the predetermined service by the data link.

Abstract: In a case where a communication apparatus fails in authentication when acquiring communication parameters from another communication apparatus and where it is determined that an authentication request signal received from the other communication apparatus has been transmitted by unicast, the communication apparatus notifies said other communication apparatus of an error. On the other hand, even in a case where the communication apparatus fails in authentication, when it is determined that the authentication request signal received from the other communication apparatus has not been transmitted by unicast, the communication apparatus does not notify said other communication apparatus of an error.

Abstract: Another apparatus is prevented from being notified of a service which cannot be used, in spite of the service that cannot be used. A communication apparatus includes a receiving unit, a detection unit, and a controller. The receiving unit receives a search signal from a second communication apparatus. The detection unit detects an execution state of a predetermined service. The controller transmits no response signals to the search signal or transmits a signal indicating that it is impossible to provide a service in response to the search signal when the predetermined service is being executed.

Abstract: A first address set for a first communication interface is acquired from another apparatus. It is determined whether the first address duplicates a second address that has been set for a second communication interface. If it is determined that the first address duplicates the second address, a third address different from the first address is reacquired from the other apparatus.

Abstract: A base station includes a reception unit that receives a first communication parameter including first security information and an identifier of a first wireless network established by another base station, a generation unit that generates second security information in which a security method defined in the first security information is changed to a security method having a higher security level, and an establishment unit that establishes a second wireless network that uses a second communication parameter including the identifier and the second security information and has the identifier.

Abstract: A communication apparatus includes a receiving unit that receives, from a first base station via wireless communication, a first communication parameter including an identifier and first security information about a first wireless network configured by the first base station, and a transmitting unit that transmits, via wireless communication, a communication parameter including the identifier to a second base station.

Abstract: In a case where a communication apparatus fails in authentication when acquiring communication parameters from another communication apparatus and where it is determined that an authentication request signal received from the other communication apparatus has been transmitted by unicast, the communication apparatus notifies said other communication apparatus of an error. On the other hand, even in a case where the communication apparatus fails in authentication, when it is determined that the authentication request signal received from the other communication apparatus has not been transmitted by unicast, the communication apparatus does not notify said other communication apparatus of an error.

Abstract: A communication apparatus comprises: a detection unit configured to detect a communicable network; a determination unit configured, if a plurality of networks are detected by the detection unit, to determine a base station constructing the detected networks; and a connection unit configured to perform connection processing in accordance with the result of determination by the determination unit.

Abstract: A communication apparatus includes a first detection unit configured to detect a service executable by another communication apparatus based on a communication in a first communication layer before the communication apparatus constructs a network with the another communication apparatus. The communication apparatus further includes a second detection unit configured to detect a service executable by the another communication apparatus based on a communication in a second communication layer that is different from the first communication layer after the communication apparatus has been wirelessly connected to the another communication apparatus, if a detection result obtained by the first detection unit does not indicate that the another communication apparatus is capable of executing a predetermined service.

Abstract: Another apparatus is prevented from being notified of a service which cannot be used, in spite of the service that cannot be used. A communication apparatus includes a receiving unit, a detection unit, and a controller. The receiving unit receives a search signal from a second communication apparatus. The detection unit detects an execution state of a predetermined service. The controller transmits no response signals to the search signal or transmits a signal indicating that it is impossible to provide a service in response to the search signal when the predetermined service is being executed.

Abstract: A communication apparatus having a wired interface configured to communicate with another communication apparatus via a wired communication includes a switching unit configured to switch between a first mode enabling a power-saving function in the wired interface and a second mode disabling the power-saving function, a processing unit configured to perform predetermined processing using data received via the wired interface from the other communication apparatus, and a limitation unit configured to limit the switching performed by the switching unit when the processing unit is performing the predetermined processing.

Abstract: A communication apparatus of the present invention is a communication apparatus that communicates with a plurality of other communication apparatuses, and starts processing for setting an address for the communication apparatus using encrypted communication when encrypted communication with the plurality of communication apparatuses becomes possible by sharing encryption keys for encrypting communication with the other communication apparatuses.

Abstract: After connection to another communication apparatus using the first communication-parameter set fails, and thereafter, connection to the other communication apparatus using the second communication-parameter set is successfully established, the connection to the other communication apparatus using the first communication-parameter set is attempted again.