Abstract: Provided is a communication device that determines a first wireless resource including a frequency for transmission of a same frame that is a frame of same data, a code of the same frame, and a time for transmission of the same frame on the basis of pattern information indicating a unique relationship between a frame number of the same frame and at least one of the frequency or the code. Further, the communication device repeatedly transmits the same frame by using the first wireless resource.

Abstract: [Object] Provided is a communication apparatus that performs radio communication of data without exchanging control information in advance. [Solving Means] A communication apparatus includes: a communication unit that transmits and receives a radio signal; a determination unit that determines a radio resource to be used by the communication unit; and a control unit that controls an operation of transmitting and receiving a radio signal by the communication unit on the basis of the radio resource determined by the determination unit, in which the determination unit determines a radio resource used for transmission of a radio signal according to a radio resource determination rule corresponding to a desired transmission period, and the control unit performs control so that the radio signal is transmitted from the communication unit at the desired transmission period.

Abstract: The present technology relates to an information processing device and method capable of suppressing lowering in the quality of user experience. An information processing device includes: a wireless communication unit that sends transmission information to another information processing device through wireless communication; and a control unit that controls at least one of the wireless communication performed by the wireless communication unit, encoding of the transmission information, or a processing process on the transmission information on the basis of blockage prediction period information indicating a prediction result on blockage of a communication path to the another information processing device. The present technology can be applied to a content playback system.

Abstract: A plurality of pieces of data is properly transmitted with use of a plurality of beams. Data generated in an application is divided into a plurality of pieces of data, different priories are assigned to the plurality of pieces of data, and the plurality of pieces of data is transmitted with a plurality of beams. A beam quality acquiring section acquires quality of each of the plurality of beams. A beam evaluating section performs evaluation of the plurality of beams on the basis of quality of each of the beams. A beam assigning section determines a correspondence between the plurality of beams and the plurality of pieces of data on the basis of evaluation of the beams and the priorities of data. A controller controls a transmitter to transmit the plurality of pieces of data through the corresponding plurality of beams.

Abstract: The present technology relates to an information processing apparatus and an information processing method that enable a base station to appropriately determine a terminal in charge of receiving processing. Priority of a base station in charge of receiving processing of the terminal among base stations that have received a connection request from the terminal is set for each of a plurality of terminals, and a charged terminal in charge of the receiving processing is determined for each of a plurality of base stations according to the priority of the base station. The present technology can be applied to, for example, a wireless communication system in which a terminal and a base station perform wireless communication.

Abstract: There is provided a communication device that determines a wireless resource for a downlink without performing signaling between a base station and a terminal. A communication device includes a communication unit that transmits and receives a wireless signal, and a wireless resource determination unit that determines a wireless resource used for transmission and reception. The wireless resource determination unit determines, in a communication system including a base station and a terminal, on the basis of a common rule between the base station and the terminal, a plurality of candidates for the wireless resource to be used for downlink communication in the slot for each terminal, and then selects the plurality of candidates for each terminal one by one in such a manner that wireless resources do not overlap between the terminals.

Abstract: Electric power is distributed among wireless communication apparatuses while, at the same time, an electric power level required to operate a wireless communication function in the wireless communication apparatus is maintained. A wireless communication apparatus includes an electric power storage section, a wireless communication section, and a control section. The electric power storage section stores electric power. The wireless communication section engages in wireless communication with other wireless communication apparatuses by using the electric power stored in the electric power storage section. The control section controls passing of electric power stored in the electric power storage section by using the electric power level required to operate a wireless communication section as a threshold.

Abstract: Provided is an information processing device that performs processing related to long-distance transmission and bidirectional communication between a plurality of terminals and a plurality of base stations. The information processing device includes: a collection unit that collects each piece of reception information of a plurality of base stations that receives an uplink frame from a terminal; and a processing unit that processes cooperative transmission of a downlink frame from the plurality of base stations to the terminal on the basis of the reception information. After repetitive uplink frame transmission is performed by using a plurality of frequencies, a downlink frame is performed at the same frequency after a certain period of time elapses from a detection timing of the uplink frame at each frequency.

Abstract: The present technology relates to a communication device and method enabling correct specification of a same frame. The communication device determines a first wireless resource including a frequency for transmission of a same frame that is a frame of same data, a code of the same frame, and a time for transmission of the same frame on the basis of pattern information indicating a unique relationship between a frame number of the same frame and at least one of the frequency or the code. Further, the communication device repeatedly transmits the same frame by using the first wireless resource. The present technology can be applied to a wireless communication system.

Abstract: The present technology relates to a transmission device and method as well as a reception device and method which can suppress the influence of interference. The transmission device sets different methods of changing the frequency of the chirp modulation for each of first information and second information different from the first information. The transmission device transmits the chirp-modulated first information or second information in accordance with the set frequency change method. The present technology can be applied to a wireless communication system.

Abstract: The present technology relates to an information processing device and method capable of suppressing lowering in the quality of user experience. An information processing device includes: a wireless communication unit that sends transmission information to another information processing device through wireless communication; and a control unit that controls at least one of the wireless communication performed by the wireless communication unit, encoding of the transmission information, or a processing process on the transmission information on the basis of blockage prediction period information indicating a prediction result on blockage of a communication path to the another information processing device. The present technology can be applied to a content playback system.

Abstract: The present technology relates to a reception device and method and a transmission device and method that enable provision of a low power consumption wireless communication system that can be used regardless of location. A terminal on a transmission side transmits a control frame containing transmission-related information regarding a transmission time and a transmission frequency that are determined on the basis of an internal time and a terminal ID on a transmission side. Then, after transmitting the control frame, the terminal on the transmission side transmits a data frame containing predetermined data in accordance with the transmission time and the transmission frequency. The present technology can be applied to wireless communication systems.

Abstract: There is provided a communication apparatus which transmits and receives a wireless frame in an asymmetric communication system. The communication apparatus gives a notification of information associated with a wireless resource to be used for data frame transmission using a control frame. The control frame contains information for time synchronization, and information associated with a data frame transmission time. Alternatively, the control frame may contain information which designates a wireless resource used by an own terminal and also another terminal for data frame transmission, and further contain information associated with a data frame transmission period, and the number of times of data frame transmission using the wireless resource designated by the control frame.

Abstract: A plurality of sensor devices that senses environmental data at installation positions is appropriately arranged. Each sensor device includes a device detection unit, a position fixing unit, a sensor unit, and a transmission unit. The device detection unit performs operation of detecting another sensor device in the surrounding area and generates a detection result thereof. The position fixing unit fixes a position of the own sensor device on the basis of the detection result obtained by the device detection unit. The sensor unit senses environmental data at a position fixed by the position fixing unit. The transmission unit transmits the data sensed by the sensor unit.

Abstract: The present technology relates to an information processing apparatus, an information processing method, and a program that enable a base station to appropriately determine a terminal in charge of receiving processing. Priority of a base station in charge of receiving processing of the terminal among base stations that have received a connection request from the terminal is set for each of a plurality of terminals, and a charged terminal in charge of the receiving processing is determined for each of a plurality of base stations according to the priority of the base station. The present technology can be applied to, for example, a wireless communication system in which a terminal and a base station perform wireless communication.

Abstract: A plurality of sensor devices that senses environmental data at installation positions is appropriately arranged. Each sensor device includes a device detection unit, a position fixing unit, a sensor unit, and a transmission unit. The device detection unit performs operation of detecting another sensor device in the surrounding area and generates a detection result thereof. The position fixing unit fixes a position of the own sensor device on the basis of the detection result obtained by the device detection unit. The sensor unit senses environmental data at a position fixed by the position fixing unit. The transmission unit transmits the data sensed by the sensor unit.

Abstract: LDPC coding is executed using a check matrix of an LDPC code whose code length is 736 bits and whose code rate is 1/4, and modulation is executed using a repetition unit that has an LDPC code obtained by the LDPC coding, repeatedly arranged therein. The LDPC code includes information bits and parity bits, the check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits, the parity matrix portion has a stepwise structure, the information matrix portion is indicated by a check matrix initial value table, and the check matrix initial value table is a predetermined table indicating positions of elements of “1” of the information matrix portion for each eight columns. This technique is applicable to, for example, information transmission using the LDPC code.

Abstract: Electric power is distributed among wireless communication apparatuses while, at the same time, an electric power level required to operate a wireless communication function in the wireless communication apparatus is maintained. A wireless communication apparatus includes an electric power storage section, a wireless communication section, and a control section. The electric power storage section stores electric power. The wireless communication section engages in wireless communication with other wireless communication apparatuses by using the electric power stored in the electric power storage section. The control section controls passing of electric power stored in the electric power storage section by using the electric power level required to operate a wireless communication section as a threshold.

Abstract: LDPC coding is executed using a check matrix of an LDPC code whose code length is 736 bits and whose code rate is 1/4, and modulation is executed using a repetition unit that has an LDPC code obtained by the LDPC coding, repeatedly arranged therein. The LDPC code includes information bits and parity bits, the check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits, the parity matrix portion has a stepwise structure, the information matrix portion is indicated by a check matrix initial value table, and the check matrix initial value table is a predetermined table indicating positions of elements of “1” of the information matrix portion for each eight columns. This technique is applicable to, for example, information transmission using the LDPC code.

Abstract: An apparatus includes a display controller, a detecting unit, and a reproduction unit. The display controller is configured to control a display unit to display marks corresponding to a plurality of images. The detecting unit is configured to detect selection information entered by a user. The selection information includes path information and additional information. The reproduction unit is configured to reproduce at least one of the plurality of images based on the additional information.