Shigeru Sugaya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: An information processing apparatus includes a control part. The control part performs control to transmit a frame for requesting the transmission of data to an information processing apparatus as a destination of the data and for requesting information processing apparatuses other than the information processing apparatus as the destination to set a transmission inhibition time, the frame being transmitted with transmitting power determined on the basis of surrounding environment information regarding an environment surrounding the information processing apparatus transmitting the frame. Transmission of the frame causes the transmission inhibition time to be set over an appropriate range of information processing apparatuses. Efficiency of utilization of communication resources is improved by suitably setting a transmission inhibition time.
Abstract: A communication device, including: a processing unit configured to generate a first protocol data unit (PDU) including first sequence number information specifying a first sequence number of a data unit set for each multicast group, multicast group information specifying a multicast group, and a data unit; and a wireless communication unit configured to transmit the first PDU generated by the processing unit. The communication device provides a mechanism capable of improving efficiency of wireless communication even in a case in which a plurality of types of multicast communication which differ in a multicast group serving as a destination are performed.
Abstract: An information processing apparatus including a control unit that performs control for adding, to request information for requesting a different apparatus for a confirmation response to a plurality of data transmitted to the different apparatus, notification information. The notification information is information regarding at least sequence numbers other than a start sequence number from among sequence numbers corresponding to the plurality of data. Further, the control unit transmits the request information, to which the notification information is added, to the different apparatus.
Abstract: 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: Wireless communication is appropriately performed. An information processing apparatus is an information processing apparatus including a management unit. The management unit included in the information processing apparatus manages a transmission suppression time period set in a network including the information processing apparatus. Along with the management, the management unit also manages a transmission suppression time period set in each of other networks, the other networks not including the information processing apparatus and transmitting radio waves reaching at least the information processing apparatus, the management unit managing the transmission suppression time period for each of the other networks.
Abstract: To provide a mechanism capable of improving communication efficiency even in communication before allocation of an AID. 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: An information processing apparatus includes a control unit. The control unit controls transmission of an inducement frame for causing another communication device to transmit a transmission suppression period reduction frame for reducing a transmission suppression period. In addition, the control unit controls transmission of the transmission suppression period reduction frame on the basis of the inducement frame in a case where the control unit receives the inducement frame. Transmission suppression periods set in other information processing apparatuses are equally reduced to eliminate inequality in using wireless resources.
Abstract: There is provided a wireless device configured to perform both multi-user spatial multiplex communication and single user communication with a communication device. The wireless device is configured to set a first waiting time for the single user communication, and count the first waiting time in a period in which a second waiting time for the multi-user spatial multiplex communication is counted. The wireless device then transmits data through the single user communication after the first waiting time expires.
Abstract: The present technology relates to a communication apparatus that can notify surrounding apparatuses of the presence of the apparatus that is receiving data. A wireless transmission processing section of a communication apparatus serving as a data frame transmitting side transmits, under control of a transmission timing control section, a data frame to a destination communication apparatus so as to include intermittent transmission-suspension periods. The present disclosure can be applied to, for example, a wireless LAN system.
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: The present technology relates to a communication apparatus and a communication system achieving efficient utilization of a transfer path of a wireless LAN. A communication apparatus according to an aspect of the present technology transmits a first trigger frame containing a transmission parameter used for data transmission to a plurality of apparatuses belonging to a wireless LAN, and receives data multiplexed and transmitted from the plurality of apparatuses having received the first trigger frame in accordance with the transmission parameter. In addition, the communication apparatus receives a second trigger frame transmitted from a predetermined apparatus of the plurality of apparatuses, and transmits multiplexed data to the predetermined apparatus in accordance with a transmission parameter contained in the received second trigger frame. The present technology is applicable to a communication apparatus in a wireless LAN.
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 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: Provided is a communication apparatus and a communication method that form an extended service set group from a plurality of basic service sets. The communication apparatus functioning as an access point includes a communication section, a control section, a detection section, and a determination section. The communication section sends and receives signals. The control section controls the transmission and reception of the signals. The detection section detects external signals. The determination section determines a position in an extended service set on the basis of detection results of the external signals. The control section controls setting of communication parameters in its own basic service set on the basis of the determined position and makes a notification of position information of the communication apparatus itself within the extended service set and of the communication parameters to a subordinate terminal.
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: [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: An information processing device includes a control unit. The control unit performs control to restrict retransmission of data or transmission of a request for an acknowledgment of receipt of the retransmission data, in accordance with the congestion status of a wireless transmission traffic. The control unit also performs control to transfer acquired data to an upper layer in case of having successfully acquired the data up to a predetermined sequence number in multicast data transmitted from another device that restricts retransmission of data in accordance with the congestion status of a wireless transmission traffic. The device can prevent decreases in the total throughput in a network.
Abstract: There is provided an information processing apparatus, information processing method, and program, capable of estimating the reliability of an evaluator to improve the accuracy of an evaluation value. The information processing apparatus includes a control unit configured to perform processing of acquiring evaluation information for an evaluation target person by an evaluator and sensing data of the evaluation target person, and processing of estimating reliability of evaluation by the evaluator on the basis of the evaluation information for the evaluation target person by the evaluator and the sensing data of the evaluation target person.
Abstract: The present technology relates to information processing apparatus and method, and a program that make a stress level controllable depending on circumstances. A stress level measuring unit measures a stress level of a user on the basis of a result of detection by various types of sensors included in an input unit. A stress factor specifying unit specifies a factor causing an increase or decrease in the stress level on the basis of an action of the user in a period in which the stress level is increased or decreased. The present technology is applicable to a stress control system, for example.
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.