Abstract: [Object] To provide a technology capable of performing processing on desired data in the reception-side communication device, even in the case in which a sequence number space is shared among a plurality of pieces of data transmitted from the transmission-side communication device. [Solution] Provided is a transmission control device including: a communication control unit that controls transmission of a plurality of pieces of data including respective sequence numbers; and a data generation unit that generates, as information indicating one or a plurality of pieces of data to be processed in a reception device among the plurality of pieces of data, number information indicating the sequence numbers included in the one or plurality of pieces of data to be processed. The communication control unit controls transmission of the number information to the reception device.

Abstract: [Object] To provide a communication apparatus and a communication method which are capable of suppressing a decrease in communication efficiency in UL communication of a random access scheme. [Solution] Provided is a communication apparatus, including a communication unit configured to transmit a first frame including wireless communication resource information in which resources selectable as uplink resources are specified from a plurality of resources and attribute information related to transmission of a second frame and receive the second frame transmitted as a response to the first frame. Provided is a communication apparatus, including a communication unit configured to receive a first frame including wireless communication resource information in which resources selectable as uplink resources are specified from a plurality of resources and attribute information related to transmission of a second frame and transmit the second frame as a response to the first frame.

Abstract: A wireless communication device in a wireless network sets management information notification cycles at specified time intervals and transmits management information containing receive timing information showing its own position to start receiving information, receive window information, and receive cycle information. Another wireless communication device receiving that management information links it to a communication device number for the corresponding wireless communication device and stores the receive timing, the receive window information, and the receive cycle information. When seeding information, the receive start position of the corresponding communication device is found from the receive timing information, the receive window information, and the receive cycle information of the other, communication and information is then transmitted at that timing. An asynchronous ad-hoc communication wireless network can therefore be configured without a particular control station.

Abstract: The present technology aims to achieve flexible transition of a communication apparatus from a centralized communication mode to another mode. A communication apparatus includes: a transition information generation unit that generates a plurality of pieces of different transition information related to transition from a first mode in which centralized communication is performed by an access point to a second mode in which no centralized communication by an access point is performed; and a frame generation unit that generates a frame containing the transition information.

Abstract: A radio transmission apparatus and a radio transmission method for readily controlling retransmission timing presets a frame cycle for retransmission, and transmits only packets for which no acknowledgement of receipt has been received within the frame cycle as a reply from a receiving apparatus to a transmitting apparatus. Thus, timing for retransmission can be readily determined. Also, the retransmission timing is determined based on when a packet is actually transmitted. Therefore, the multiple acknowledgement of receipt can be returned as a combined reply.

Abstract: [Object] To provide a technology capable of performing processing on desired data in the reception-side communication device, even in the case in which a sequence number space is shared among a plurality of pieces of data transmitted from the transmission-side communication device. [Solution] Provided is a transmission control device including: a communication control unit that controls transmission of a plurality of pieces of data including respective sequence numbers; and a data generation unit that generates, as information indicating one or a plurality of pieces of data to be processed in a reception device among the plurality of pieces of data, number information indicating the sequence numbers included in the one or plurality of pieces of data to be processed. The communication control unit controls transmission of the number information to the reception device.

Abstract: [Object] To provide a mechanism capable of improving communication efficiency even in communication before allocation of an AID. [Solution] A communication device including: a communication unit configured to transmit a first frame including a second association identifier decided by a communication device to which a first association identifier is allocated and receive a second frame including information related to the second association identifier.

Abstract: Provided is a communication device configured to operate in a plurality of communication modes and maintain information related to retransmission of data in accordance with switching of the communication modes.

Abstract: [Object] To enable determination as to whether or not at least part of a predetermined signal is correctly received at a transmission destination device even in the case of failure in reception processing of a signal which responds to the predetermined signal. [Solution] Provided is a communication device including: a transmitting unit configured to perform transmission processing of a first signal; a receiving unit configured to perform reception processing of a second signal which responds to the first signal in a predetermined period determined by a time point of the transmission processing; and a determining unit configured to perform determination as to whether or not at least part of the first signal is correctly received at a transmission destination device on the basis of information acquired in process of the reception processing.

Abstract: [Object] To provide a communication apparatus and a communication method which are capable of suppressing a decrease in communication efficiency in UL communication of a random access scheme. [Solution] Provided is a communication apparatus, including a communication unit configured to transmit a first frame including wireless communication resource information in which resources selectable as uplink resources are specified from a plurality of resources and attribute information related to transmission of a second frame and receive the second frame transmitted as a response to the first frame. Provided is a communication apparatus, including a communication unit configured to receive a first frame including wireless communication resource information in which resources selectable as uplink resources are specified from a plurality of resources and attribute information related to transmission of a second frame and transmit the second frame as a response to the first frame.

Abstract: A wireless communication network that forms an ad-hoc network without the arrangement of a controlling station sets a period that a communication apparatus can utilize with priority and performs isochronous communication in the period as required. When isochronous communication has not been performed or after isochronous communication has finished in the priority utilization period, other communication apparatuses perform arbitrary communication. When another communication is performed in a communication apparatus's own priority utilization period, the start of isochronous communication is temporarily delayed. In an ad-hoc communication environment, data having a real-time characteristic, such as AV content, can be efficiently transmitted through the isochronous communication.

Abstract: [Object] To enable a communication device which has received a response frame to identify a BSS to which a transmitting device of the response frame belongs while ensuring backward compatibility. [Solution] Provided is a communication device that transmits a response frame, including: a generating unit configured to generate the response frame in which information used for identification of a BSS to which the communication device belongs or information used for identification of an own device is included in or after a padding bit specified in IEEE 802.11; and a transmitting unit configured to transmit the response frame.

Abstract: Provided are a communication device and a communication method which are capable of performing an operation suitably with a basic service set belonging to an extended service set. An AP notifies of BSS Color information of its own device together with information for specifying the BSS Color information to be managed. Upon receiving the notification, an STA identifies BSS Color information used in the same ESS and BSS Color information used in an OBSS not belonging to the ESS, and deals with signals from other BSSs in the same ESS, in accordance with signals from the BSS of its own device.

Abstract: A wireless communication device in a wireless network sets management information notification cycles at specified time intervals and transmits management information containing receive timing information showing its own position to start receiving information, receive window information, and receive cycle information. Another wireless communication device receiving that management information links it to a communication device number for the corresponding wireless communication device and stores the receive timing, the receive window information, and the receive cycle information. When sending information, the receive start position of the corresponding communication device is found from the receive timing information, the receive window information, and the receive cycle information of the other communication and information is then transmitted at that timing. An asynchronous ad-hoc communication wireless network can therefore be configured without a particular control station.

Abstract: A wireless communication apparatus is provided that performs wireless communication using a specified wireless channel and forms part of an ad hoc wireless network. The device includes a recording portion that records country ID information and recording-time information in to a storage medium, where the recording-time information indicates the time at which the country ID information was recorded in to the storage medium, a time determination portion that uses the recording-time information to determine whether a predetermined time period has elapsed from the time at which the country ID information was recorded, and a channel setting portion that, when the predetermined time period has not elapsed from the time at which the country ID information was recorded in the storage medium, sets a wireless channel to a frequency channel that can be used in the country indicated by the country ID information recorded in the storage medium.

Abstract: To provide an excellent communication apparatus and communication method which operates with a basic service set belonging to an extended service set. A wireless terminal transmits a frame in which BSS-color and ESS-color which respectively identify a BSS and an ESS to which the own wireless terminal belongs are described. Further, part of a region for storing ESS-color is used as a region for storing BSS-color to secure the number of pieces of BSS-color sufficient to avoid overlapping. An STA stores statistical information regarding a received frame in association with BSS-color and ESS-color and performs cooperative operation within the ESS or between the ESSs.

Abstract: A data unit that requires a receipt acknowledgement response in a plurality of transmitted data units is suitably selected. A wireless communication apparatus includes a control unit. The control unit controls transmission of receipt acknowledgement requests for a plurality of transmitted data units. Further, the receipt acknowledgement request whose transmission is controlled by the control unit is a receipt acknowledgement request including information, the information identifying a data unit that requires a receipt acknowledgement response in the plurality of transmitted data units and specifying the identified data unit.

Abstract: A wireless communication control device, including: a detection control unit configured to give an instruction to perform radio wave detection to at least one of a plurality of wireless communication devices that perform wireless communication with directivity; and a communication control unit configured to control communication of the wireless communication device on the basis of first information specifying a direction in which a radio wave is detected by the wireless communication device. A wireless communication device, including: a detection processing unit configured to execute a radio wave detection process with directivity on the basis of an instruction to perform radio wave detection; a providing unit configured to provide first information specifying a direction in which a radio wave is detected to a communication control unit; and a communication unit configured to perform wireless communication in a range of a direction related to directivity based on an external instruction.

Abstract: [Object] To provide a mechanism capable of improving communication efficiency even in communication before allocation of an AID. [Solution] A communication device including: a communication unit configured to transmit a first frame including a second association identifier decided by a communication device to which a first association identifier is allocated and receive a second frame including information related to the second association identifier.

Abstract: A wireless communication network that forms an ad-hoc network without the arrangement of a controlling station sets a period that a communication apparatus can utilize with priority and performs isochronous communication in the period as required. When isochronous communication has not been performed or after isochronous communication has finished in the priority utilization period, other communication apparatuses perform arbitrary communication. When another communication is performed in a communication apparatus's own priority utilization period, the start of isochronous communication is temporarily delayed. In an ad-hoc communication environment, data having a real-time characteristic, such as AV content, can be efficiently transmitted through the isochronous communication.