Abstract: A communication apparatus that performs wireless communication using a first communication system and a second communication system includes a determining unit that determines an operation mode selected from a first operation mode and a second operation mode, the first operation mode being an operation which is used in the second communication system and in which the communication apparatus communicates with a different communication apparatus in a wireless network created by the communication apparatus, the second operation mode being an operation which is used in the second communication system and in which the communication apparatus communicates with the different communication apparatus in a wireless network created by an external apparatus, and a storing unit that stores information, based on the selected operation mode, used to establish a connection with one of the wireless networks.

Abstract: Even when a plurality of communication parameter providing devices exist, a communication parameter setting process is enabled. When a plurality of communication parameter providing devices exist, one of the communication parameter providing devices is determined. For example, all the communication parameter providing devices are caused to stop the providing process. Alternatively, a user is allowed to select a communication parameter providing device. Alternatively, a communication parameter providing device is determined in accordance with a predetermined rule.

Abstract: Even if the roles of apparatuses are not decided in advance when automatically setting communication parameters, communication parameter setting processing and network joining processing are appropriately executed without requiring the user to select the roles of apparatuses. The invention is characterized by a communication method for a communication apparatus, including a first search step of searching for a communication partner apparatus on a predetermined communication channel, a second search step of searching for a communication partner apparatus on all communication channels available for communication, and a search control step of searching for a communication partner apparatus using the first and second search steps.

Abstract: A communication apparatus functioning as a master device denies participation by new communication apparatuses in a network in communication parameter configuration mode based on participation statuses of communication apparatuses functioning as slave devices in the network. The communication apparatus functioning as a master device establishes the network in communication parameter configuration mode between the communication apparatuses participating in the network, and configures communication parameters.

Abstract: A communication apparatus includes a connecting unit configured to execute connection processing with another communication apparatus, a receiving unit configured to receive a request signal for causing said another communication apparatus to acquire service information provided by the communication apparatus before the connection processing with said another communication apparatus is executed by the connecting unit, and a transmitting unit configured to transmit a response signal including the service information in a case where the request signal is received by the receiving unit. In the communication apparatus, the transmitting unit restricts transmission of the response signal according to a predetermined condition.

Abstract: The present invention relates to improvement of convenience in displaying service search results when service search is performed in different communication layers. A communication device of the present invention includes the steps of presenting a plurality of options including a first option for specifying a service to be executed and performing wireless communication and a second option for specifying a connected party and performing wireless communication; and selecting a wireless communication mode to be executed from wireless communication modes corresponding to the plurality of options including the first option and the second option.

Abstract: A communication apparatus (101) includes: receiving means for receiving a communication parameter, which is necessary for communication, from another communication apparatus; storage means (103, 212) for storing the communication parameter; first detecting means for detecting a connection instruction for connection to a network; and connecting means which, if the connection instruction (S401) has been detected by the first detecting means, is for executing processing for connecting to the network using a communication parameter already stored in the storage means (212), or processing for connecting to the network after a communication parameter is received from another communication apparatus by the receiving means, in accordance with the type of communication parameter already stored in the storage means (212).

Abstract: [Object] To enable a device that is a target for denial of communication to be shared over a network. [Solution] A communication device registers identifying information of a denial target device that is present in a first network and that is a target for denial of communication and notifies another device of the registered identifying information of the denial target device. The communication device constructs a second network different from the first network with the other device.

Abstract: In order to prevent a communication-parameter automatic setting process from being performed by unintended communication apparatuses, a communication terminal having detected a plurality of communication-parameter providing apparatuses sends a notification indicating that the plurality of providing apparatuses exist to another terminal.

Abstract: A communication apparatus detects one or a plurality of apparatuses which have been instructed to start communication-parameter setting processing using identification information and, moreover, in which this identification information has already been set, outputs terminal identification information, and executes the communication-parameter setting processing with an apparatus, which is other than an apparatus detected before the terminal identification information is output, from among detected apparatuses.

Abstract: If automatic setting of communication parameters is performed in an ad hoc network when a communication apparatus is connected to an infrastructure network, there is a possibility that infrastructure network information is leaked to the infrastructure network. When an instruction to start the automatic setting of communication parameters is issued, a network participation state of the communication apparatus is determined and the automatic setting of communication parameters is not performed during enterprise connection.

Abstract: A communication apparatus determines whether the communication apparatus is to operate as a transmission apparatus for transmitting service data to be transferred by a service performed via a network, or operate as both the transmission apparatus for transmitting the service data to be transferred by the service performed via the network and a reception apparatus for receiving the service data to be transferred by the service performed via the network, terminates a connection with a communication partner apparatus in response to completion of transmission of the service data if the communication apparatus operates as the transmission apparatus, and terminates the connection with the communication partner apparatus in response to a user operation if the communication apparatus operates as both the transmission apparatus and the reception apparatus.

Abstract: A communication apparatus in which a service can more efficiently used is provided. The communication apparatus searches for an apparatus that provides a particular service and establishes a wireless connection to the other searched communication apparatus. Subsequently, an address of the other connected communication apparatus is obtained from the other communication apparatus, and the service provided by the other communication apparatus is used using the obtained address.

Abstract: A communication apparatus connectable to a communication network notifies the presence of the communication apparatus using a communication channel assigned to the communication apparatus, then sets one communication channel different from the assigned communication channel of those available in the communication network, and searches for a communication partner apparatus which functions as a providing apparatus that provides communication parameters using the set communication channel. The communication apparatus repetitively executes the notification processing and the search processing, and changes a communication channel used in the search processing every time the repetition is executed one or a plurality of number of times.

Abstract: A communication apparatus, which has a base station function and a terminal function and performs communication using at least one of the base station function and the terminal function, includes an identification unit and a decision unit. The identification unit identifies, for communication, a partner apparatus among one or more other communication apparatuses based on a service to be executed by the communication apparatus and services to be executed by the one or more other communication apparatuses. The decision unit decides whether the communication apparatus uses the base station function or the terminal function when connecting to the partner apparatus, based on execution states of base station functions and terminal functions of the communication apparatus and the partner apparatus.

Abstract: Even if the roles of apparatuses are not decided in advance when automatically setting communication parameters, communication parameter setting processing and network joining processing are appropriately executed without requiring the user to select the roles of apparatuses. The invention is characterized by a communication method for a communication apparatus, including a first search step of searching for a communication partner apparatus on a predetermined communication channel, a second search step of searching for a communication partner apparatus on all communication channels available for communication, and a search control step of searching for a communication partner apparatus using the first and second search steps.

Abstract: A communication apparatus connectable to a communication network notifies the presence of the communication apparatus using a communication channel assigned to the communication apparatus, then sets one communication channel different from the assigned communication channel of those available in the communication network, and searches for a communication partner apparatus which functions as a providing apparatus that provides communication parameters using the set communication channel. The communication apparatus repetitively executes the notification processing and the search processing, and changes a communication channel used in the search processing every time the repetition is executed one or a plurality of number of times.

Abstract: A first communication apparatus that functions as a providing apparatus that provides an encryption key or as a receiving apparatus that receives an encryption key provided by a providing apparatus, and that performs a key sharing process for sharing an encryption key with another apparatus, confirms whether or not the first communication apparatus functioned as the providing apparatus in the key sharing process performed among a plurality of apparatuses present on a network in which the first communication apparatus is joining; compares identification information of a second communication apparatus that has newly joined the network with identification information of the first communication apparatus; and determines whether or not the first communication apparatus is to function as a providing apparatus in the key sharing process performed between the first and the second communication apparatuses based on the result of the confirmation and the comparison.

Abstract: Even if the roles of apparatuses are not decided in advance when automatically setting communication parameters, communication parameter setting processing and network joining processing are appropriately executed without requiring the user to select the roles of apparatuses. The invention is characterized by a communication method for a communication apparatus, including a first search step of searching for a communication partner apparatus on a predetermined communication channel, a second search step of searching for a communication partner apparatus on all communication channels available for communication, and a search control step of searching for a communication partner apparatus using the first and second search steps.

Abstract: When a communication device detects another communication device operating as a providing device that provides a communication parameter and when a communication parameter has already been set between the communication device and a different communication device or when the communication device is participating in the same network as that in which the different communication device is present, the communication device transmits a session overlap notice to the detected communication device.