Sony Corporation

Sony Group Corporation

Ebara Corporation

Mitsumi Electric Company Ltd.

Sony Deutschland Gmbh

Kabushiki Kaisha Toshiba

Kyoto University

Takashi Usui

Takehiro Sugita

Akira Ogino

Shinichiro Tsuda

Naoki Ide

Mitsuhiro Suzuki

Shinichiro Abe

Ryota Kimura

Sho Furuichi

Ryo Sawai

Hiromasa Uchiyama

Chihiro Fujita

Kazuyuki Sakoda

Tomoya Yamaura

Hiroshi Ohno

Kazuo Watabe

Kazuhisa Takamura

Hiroyuki Yamasuge

Masayuki Takada

Tetsuya Naruse

Shigeru Arisawa

Shuhei Sonoda

Hisaki Hiraiwa

Jun Iwasaki

Hideaki Sato

Nishiki Mizusawa

Kenji Komori

Nozomu Ikeda

Hidefumi Takamine

Seiji Esaka

Shiro Omori

Ralf Boehnke

Tino Konschak

Masataka Wakamatsu

Hideo Morohashi

Shinichi Tanabe

Tatsuya Nishimura

Roberto Masahiro Serikawa

Takuji Maekawa

Kazuyuki Saijo

Kazuhiro Fujimura

Sanae Iida

Masahiro Isaka

Thomas Doelle

Shiro Ohmori

Oingquan Su

Techniques for controlling updating of information stored on a device, the information including information of a first type and information of a second type. The techniques include determining, using at least one processor, when a first item of information of the first type and a second item of information of the second type are to be updated, wherein the second item of information is to be updated more frequently than the first item of information; and causing the device to update the first and second items of information in accordance with the determination at least in part by wirelessly communicating with at least one other device.

Method, non-transitory computer readable storage medium, device and system that categorizes map information as static map information and dynamic map information and updates static map information differently from dynamic map information

[Object] To achieve both prevention of harmful interference and promptness of power allocation under conditions in which multiple secondary systems may be managed. [Solution] Provided is a communication control apparatus including: a calculation unit configured to calculate a transmit power to be allocated, including a nominal transmit power and a margin for interference avoidance, for one or more secondary systems that secondarily use frequency channels protected for a primary system; and a determination unit configured to determine a variation in a number of secondary systems, and cause the calculation unit to adjust the margin for interference avoidance on a basis of the determined variation.

Communication control apparatus and wireless communication apparatus

Method, non-transitory computer readable storage medium, device and system

An information processing device may include a control unit to control display of information of a base station of a first wireless communication method existing around a predictive migration path by using position information of the information processing device, the information processing device using a second wireless communication method.

Information processing device for displaying information of base stations around predictive migration path of user

A degree of congestion of a wireless communication service is accurately calculated. A wireless communication device includes a particular signal strength acquiring unit, a received signal strength acquiring unit, and a congestion calculating unit. The particular signal strength acquiring unit acquires a strength of a particular signal that is transmitted from a base station, and is to be referred to at a time of base station selection. The received signal strength acquiring unit acquires a strength of a received signal transmitted in the carrier frequency band from the base station. The congestion calculating unit calculates a degree of congestion of the base station by using the strength of the particular signal and the strength of the received signal.

Wireless communication device, information processing device, communication system, and communication quality calculation method and program

The present application relates to a method whereby the communication traffic between a wireless communication apparatus such as a smartphone and another device such as a map information providing server and/or server managed by mobile virtual network operator MVNO. According to a first aspect, the communication traffic can be reduced by dividing items of geographical information that are sent to the smartphone are divided into static information and dynamic information and the two types of information are separately processed in that the map data is updated less often than information such as traffic congestion, weather information or the congestion level of a base station. According to a second aspect, congestion information is derived by averaging over time the number of vehicles which pass through a certain point. According to a third aspect, the updating interval, i.e. the frequency by which new information will be downloaded from the server, is adapted to degree of change of the dynamic information over time. According to a fourth aspect, the updating interval is adapted to the movement speed of the smartphone. According to a fifth aspect, download rates of a communication carrier are displayed on top of a map, thereby providing some sort of geobrowsing. According to a sixth aspect, an MVNO informs its subscribers about base station related information, such as signal intensity and the base station's congestion level. According to a seventh aspect, the smartphone selects, on the basis of the various items of information received, another network, either manually or automatically.

Method, non-transitory computer readable storage medium, device and system to update information on a device

A radio communication apparatus includes a receiving unit configured to receive information controlling a timing at which an access request for accessing an access destination over a network is to be executed. The radio communication apparatus also includes a control unit configured to control execution of the access request with a timing controlled based at least in part on the information. An associated method, medium and an information processing apparatus are also described.

Radio communication apparatus, information processing apparatus, communication system, and method of controlling a radio communication apparatus according to information controlling a condition in which an access request is to be executed

Excellent communication is to be enabled even in a communication environment with poor line quality. A mobile terminal acquires communication state information indicating a state of communication with a base station, and sends this communication state information to a carrier server device through the base station. The carrier server device receives this communication state information, and, based on this communication state information, controls the communication speed of content data to be transmitted from a web server to the mobile terminal device through the base station. The carrier server device sends this content data having the controlled communication speed to the mobile terminal through the base station.

Mobile terminal device, wireless communication method for mobile terminal device, carrier server device, and communication speed control method in carrier server device

[Object] To be able to detect a terminal in the vicinity of a small cell base station and appropriately provide an opportunity for handover even when the small cell base station is put into a standby state. [Solution] Provided is a radio communication apparatus including: a radio communication unit configured to provide radio communication service to one or more terminals within a second cell which overlaps with a first cell; a detecting unit configured to detect a terminal existing in the vicinity by monitoring strength of an uplink signal transmitted in the first cell while an operation mode of the radio communication unit is set at a standby mode; and a mode setting unit configured to switch the operation mode of the radio communication unit to an active mode when the detecting unit detects the terminal existing in the vicinity.

Radio communication apparatus, radio communication method, communication control apparatus, and communication control method to switch operation mode based on failure of handover

Growing community of inventors

Tokyo, Japan

Takashi Usui