Sony Group Corporation

Sony Corporation

Kosuke Aio

Yusuke Tanaka

Shigeru Sugaya

Ryuichi Hirata

Yuichi Morioka

Ken Tanaka

Ren Sugai

Tomoya Yamaura

Hiromasa Uchiyama

Sawako Kiriyama

Kazuyuki Sakoda

Mohamed Abouelseoud

Takefumi Nagumo

Liangxiao Xin

Thomas Handte

Yuichi Hasegawa

Dana Ciochina

Qing Xia

Shinichiro Tsuda

Yuelin Ma

Asako Doi

Koji Kakinuma

The present technology improves an effective rate in a case where joint transmission is performed once in multi-APs that perform joint transmission, and then a weight is changed and joint transmission is performed again. A wireless base station includes a wireless control unit and a communication unit. The wireless control unit generates weight update information for updating a first weight to a second weight, the first weight being a weight used in joint transmission previously performed with another wireless base station, the second weight being a weight used for performing the joint transmission after the joint transmission using the first weight. The communication unit notifies the another wireless base station of the weight update information.

Wireless base station

A wireless communication device and method that performs uplink transmission in coordination with another wireless communication device, and acquires transmission method information indicating a transmission method of a downlink control signal which is a control signal necessary for the uplink transmission or information necessary for determining the transmission method from the another wireless communication device.

Wireless communication devices and methods for uplink transmission

The present technology relates to a wireless communication device and method, and a wireless communication terminal and method that enable a plurality of access points to efficiently collect receipt acknowledgments of data from respective communication terminals. The wireless communication device coordinately transmits, with one or more first other wireless communication devices, data addressed to the wireless communication terminals each including information indicating a transmission timing of a receipt acknowledgment of each of the plurality of wireless communication terminals. Furthermore, the wireless communication device receives the receipt acknowledgment from each of the wireless communication terminals after transmitting the data. The present technology can be applied to a wireless communication system.

Wireless communication device and method, and wireless communication terminal and method

Interference with another terminal caused by joint transmission of a plurality of wireless base stations is appropriately estimated. A wireless base station includes a wireless control section and a communication section. The wireless control section, when performing joint transmission with a joint wireless base station, generates a reference signal for estimating interference given to a wireless terminal connected to another wireless base station, and determines a setting regarding joint transmission in accordance with a result of estimation of interference based on the reference signal. The communication section transmits a reference signal to another wireless base station or a wireless terminal, and announces, to a joint wireless base station, a setting regarding joint transmission.

Wireless base station and wireless terminal

A communication apparatus, and corresponding method, that transmits and receives a radio signal using a first communication band and a second communication band, and a controller that controls an operation of communication performed by the communication section, where the controller performs control such that a signal that includes information regarding a clear channel of the second communication band is transmitted using a channel of the first communication band. Further, the controller performs control such that data is transmitted to a transmission destination of the signal using one of a plurality of the clear channels of the second communication band, the plurality of the clear channels of the second communication band being included in the signal.

Communication apparatus and communication method

The present technology relates to a communication device and a communication method capable of curbing deterioration of frequency utilization efficiency. A communication device including a control unit configured to set a first frequency channel group used at the time of simultaneously transmitting data in cooperation with another communication device constituting another network, to set a second frequency channel group used for communication in a host network, and to dynamically control bandwidths of frequency bands in the first frequency channel group and the second frequency channel group is provided. The present technology can be applied to, for example, a wireless LAN system.

Communication device and communication method

The present technology relates to a wireless communication device and a method that make it possible to suppress signal collisions and a loss of an opportunity to acquire a transmission right. The wireless communication device transmits and receives signals to and from another wireless communication device, and determines a coordination recommendation channel to be recommended to the other wireless communication device in order to perform coordination communication. The present technology can be applied to wireless communication systems.

Wireless communication device and method

The present technology relates to a communication apparatus and an information processing method that make it possible to appropriately reduce inter-link interference. The communication apparatus according to the present technology acquires, in a case of simultaneously performing transmission and reception of a data signal with another communication apparatus using a plurality of Links, first interference information concerning interference between Links occurring in the other communication apparatus from the other communication apparatus, and decides a transmission parameter to be used by the other communication apparatus for transmission of a data signal on a basis of the first interference information and second interference information concerning interference between the Links occurring in the communication apparatus. The present technology is applicable to a wireless communication system.

Communication apparatus and information processing method

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 priorities 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.

Wireless communication device

A communication device determines a communication quality with a base station, requests a neighboring base station for a transition judgment information to transmit information to become a judgment criterion of the communication quality to be included in a Beacon signal at a stage before the communication quality degrades to an extent that the base station is immediately switched, and selects a base station with which a communication connection should be established on the basis of the transition judgment information included in the Beacon signal transmitted in response to the transition judgment request. The communication device is applicable to a communication system in the wireless LAN.

Wireless device, and wireless communication method of wireless device, wireless terminal, and wireless communication method of wireless terminal, and wireless base station, and wireless communication method of wireless base station

A communication device that performs wireless communication using a plurality of links includes a common data processing unit that includes a common storage unit of a cache type storing success/failure of acquisition of packets received on the plurality of links, and that performs common data processing on packets received on individual links, and a control unit that controls transmission of a response signal to the packets received. The control unit generates a common response signal including acquisition success/failure information received on the plurality of links on the basis of acquisition success/failure information held in the common storage.

A communication control device that causes a second communication device to generate a switching response frame indicating a response of connection switching that is to be transmitted to a communication terminal configured to switch a connection destination from a first communication device to the second communication device, on the basis of information regarding a connection between the first communication device and the communication terminal.

Communication control device, communication control method, communication terminal, and communication method for switching a terminal from a first connection to a second connection

Provided is a communication device including a plurality of antenna elements and that performs wireless communication in a high frequency band while suppressing the circuit scale. The communication device includes: a communication unit that transmits and receives a wireless signal using a plurality of antenna elements; and a control unit that controls compensation for degradation in communication quality in the communication unit on the basis of control information received from outside. The communication unit includes a plurality of wireless interfaces and a delay compensation unit that compensates for delay of the wireless interfaces. The control unit determines whether or not to perform the compensation on the basis of capability information exchanged with a communication partner.

A communication device and a communication method for allowing a communication terminal to be able to search for access points within a short time are provided. A communication device operating as an access point in a wireless network transmits a beacon signal at a predetermined beacon interval on an operation channel selected from available frequency channels. In addition, the communication device performs data transmission and data reception to/from a communication terminal subordinate thereto on the operation channel, and transmits a notification signal including information about the operation channel while switching channels at each predetermined cycle in available frequency channels other than the operation channel.

The present technology relates to a communication device and a communication method capable for enabling more reliable acknowledgment of data receipt. Further, the present technology provides a communication device including a control unit that performs control to transmit data to a reception-side communication device, when coordinated transmission is performed to transmit the data simultaneously from a plurality of transmission-side communication devices to the reception-side communication device, generate a request signal including coordinated transmission information regarding the coordinated transmission, and acknowledgement return information for returning an acknowledgement of the coordinately transmitted data simultaneously to the plurality of transmission-side communication devices, transmit the generated request signal to the reception-side communication device, and receive an acknowledgement signal including the acknowledgement, the acknowledgement signal being transmitted from the reception-side communication device that has received the request signal. The present technology can be applied to a wireless LAN system, for example.

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Kanagawa, Japan

Kosuke Aio