Abstract: [Overview] [Problem to be Solved] To provide a wireless communication device that is able to easily switch to an existing system when a new system is constructed by employing a communication scheme using a millimeter wave. [Solution] There is provided a wireless communication device including a first communication controller that executes communication control through a first line using a radio wave of a millimeter waveband, a second communication controller that executes communication control through a second line using a radio wave of a band other than the millimeter waveband, and a connection controller that provides, via the first line, information regarding charging by using a command of a physical layer.

Abstract: A wireless communications system for performing data communications between a data transmission side wireless communications device and a data receiving side wireless communications device. In the system, random back-off access control is performed until a connection is established between the data transmission side wireless communications device and the data receiving side wireless communications device. Then, after the connection is established, asymmetric IFS access control is performed.

Abstract: A communication apparatus, a communication system, a communication method, and a program capable of performing relay transfer of a data file swiftly and simply in performing short-distance one-to-one communication are provided. The communication apparatus includes a communication part that performs short-distance one-to-one communication with a communication partner apparatus via electric field coupling or magnetic field coupling, a relay transfer mode setting part that sets a relay transfer mode in which a data file are relay-transferred from at least one first apparatus to at least one second apparatus, a storage part that holds the data file received from the first apparatus while the relay transfer mode is set, and a transmission control part that transmits the data file held in the storage part to the second apparatus with which communication is established while the relay transfer mode is set.

Abstract: A communication apparatus of the present invention includes a transmission/reception coupler for performing a one-to-one communication at short distance with an apparatus of a communication opponent by electric field coupling or magnetic field coupling; a plural copy mode setting unit for setting a plural copy mode for transferring a data file to a plurality of apparatuses; a data file selecting unit for selecting a data file to transfer to the plurality of apparatuses; a file transfer processing unit for transferring the data file already selected in the data file selecting unit to an apparatus, which communication is established, when the plural copy mode is set; and a plural copy mode canceling unit for canceling the plural copy mode.

Abstract: Each communication station, at least, periodically transmits/receives a beacon at regular intervals and manages the transmission/reception using a neighboring-station list (neighbor list), thereby managing the network of the communications station in a distributed manner. In addition, a save area is provided in which n beacons transmitted/received at regular time intervals are managed in a neighboring-station list, thereby making it easy to schedule list reading/writing processing when the list is updated during the reception of a new beacon. When the network topologies are crossed over, a load for network management can be reduced. Thus, it is possible to provide a wireless communication system in which a system timer and a master station that controls common frame time do not exist in a domain included in the system.

Abstract: There is provided a communication apparatus including a first communication control unit for controlling a communication in a first communication method, a storage unit in which contact information of other communication apparatus in the first communication method is recorded, and a second communication control unit for controlling a connection establishment communication with a communication party in a second communication method based on electric field coupling or magnetic field coupling and a data communication with the communication party in the second communication method, wherein the second communication control unit does not make the data communication with the communication party when the contact information recorded in the storage unit is not contained in a signal transmitted from the communication party during the connection establishment communication.

Abstract: A communication apparatus of the present invention includes a transmission/reception coupler for performing a one-to-one communication at short distance with an apparatus of a communication opponent by electric field coupling or magnetic field coupling; a plural copy mode setting unit for setting a plural copy mode for transferring a data file to a plurality of apparatuses; a data file selecting unit for selecting a data file to transfer to the plurality of apparatuses; a file transfer processing unit for transferring the data file already selected in the data file selecting unit to an apparatus, which communication is established, when the plural copy mode is set; and a plural copy mode canceling unit for canceling the plural copy mode.

Abstract: A communication apparatus, a communication system, a communication method, and a program capable of performing relay transfer of a data file swiftly and simply in performing short-distance one-to-one communication are provided. The communication apparatus includes a communication part that performs short-distance one-to-one communication with a communication partner apparatus via electric field coupling or magnetic field coupling, a relay transfer mode setting part that sets a relay transfer mode in which a data file are relay-transferred from at least one first apparatus to at least one second apparatus, a storage part that holds the data file received from the first apparatus while the relay transfer mode is set, and a transmission control part that transmits the data file held in the storage part to the second apparatus with which communication is established while the relay transfer mode is set.

Abstract: A wireless communication apparatus includes a random number range holding unit configured to hold a random number range, a random time setting unit configured to set a random time based on the random number range, a random time counting unit configured to count the random time starting from a particular time only when the radio communication channel is not used, a transmitting unit configured to transmit data via the radio communication channel when counting of the random time was completed, a time counting unit configured to count a particular time, and a random number range control unit configured to control the random number range such that when data transmitted by the transmitting unit over the radio communication channel collides with another data, the random number range is expanded, while when the particular time has been counted by the time counting unit, the random number range is initialized.

Abstract: A collision of data transmitted in an ad hoc network in which a communication system such as a wireless LAN system is managed without a master control station is minimized. A communication station in the network estimates a time at which a neighboring station will transmit a signal and, when a communication start request is received from some other communication station, adds time information, generated based on the length of time to the estimated time, to a response to the communication start request. This allows the reception side communication station, which knows in advance that the transmission will be occupied by a transmission from other communication stations, to cause the transmission side communication station to transmit data at a time other than that occupation time.

Abstract: A wireless communications system for performing data communications between a data transmission side wireless communications device and a data receiving side wireless communications device. In the system, random back-off access control is performed until a connection is established between the data transmission side wireless communications device and the data receiving side wireless communications device. Then, after the connection is established, asymmetric IFS access control is performed.

Abstract: A wireless communication apparatus includes a random number range holding unit configured to hold a random number range, a random time setting unit configured to set a random time based on the random number range, a random time counting unit configured to count the random time starting from a particular time only when the radio communication channel is not used, a transmitting unit configured to transmit data via the radio communication channel when counting of the random time was completed, a time counting unit configured to count a particular time, and a random number range control unit configured to control the random number range such that when data transmitted by the transmitting unit over the radio communication channel collides with another data, the random number range is expanded, while when the particular time has been counted by the time counting unit, the random number range is initialized.

Abstract: Each communication station, at least, periodically transmits/receives a beacon at regular intervals and manages the transmission/reception using a neighboring-station list (neighbor list), thereby managing the network of the communications station in a distributed manner. In addition, a save area is provided in which n beacons transmitted/received at regular time intervals are managed in a neighboring-station list, thereby making it easy to schedule list reading/writing processing when the list is updated during the reception of a new beacon. When the network topologies are crossed over, a load for network management can be reduced. Thus, it is possible to provide a wireless communication system in which a system timer and a master station that controls common frame time do not exist in a domain included in the system.

Abstract: A collision of data transmitted in an ad hoc network in which a communication system such as a wireless LAN system is managed without a master control station is minimized. A communication station in the network estimates a time at which a neighboring station will transmit a signal and, when a communication start request is received from some other communication station, adds time information, generated based on the length of time to the estimated time, to a response to the communication start request. This allows the reception side communication station, which knows in advance that the transmission will be occupied by a transmission from other communication stations, to cause the transmission side communication station to transmit data at a time other than that occupation time.