Ntt Docomo, Inc.

Canon Kabushiki Kaisha

Ntt Mobile Communications Network, Inc.

Tokyo Institute of Technology

Other

Deutschetelekom Ag

Nippon Light Metal Company, Ltd.

Softbank Corporation

Matsushita Communication Industrial Co., Ltd.

Hitoshi Yoshino

Takahiro Asai

Osamu Kanome

Hirofumi Kamitakahara

Kyo Miura

Yuji Kondo

Hisanori Hayashi

Hiromasa Fujii

Tetsuya Sato

Toru Otsu

Yuta Sagae

Takatoshi Sugiyama

Naoki Kushida

Masashige Shirakabe

Hui Shi

Anass Benjebbour

Atsushi Fujiwara

Shinji Takeda

Naoto Matoba

Masataka Yashima

Yasushi Yamao

Hiroyuki Sugata

Mizuho Hiraoka

Tsuyoshi Santoh

Toshiya Yuasa

Takeo Eguchi

Satoru Fukumoto

Yoshihiro Ogawa

Tetsushi Abe

Koji Maeda

Hiroyuki Ogino

Takashi Kai

Kazuhiko Fukawa

Hiroshi Suzuki

Sachiko Ichikawa

Shoji Koike

Hiroshi Tomioka

Jiyun Shen

Hiroyuki Imataki

Ryota Kato

Noribumi Koitabashi

Sadaki Futagi

Akira Nagashima

Sadayuki Sugama

Mitsuru Uesugi

Hiromitsu Yamaguchi

Satoshi Wada

Satoshi Suyama

Masaya Asao

Junichiro Hagiwara

Yoshihiro Oguchi

Kenji Nakajima

Tatsuo Furuno

Yukitoshi Ohkubo

Shinzo Ohkubo

Tomoyuki Ooya

Seijiro Kato

Kozue Hamamoto

Shiro Kikuchi

Katsuhiko Hiramatsu

Kenji Shinjo

Hisaaki Kawade

Yasuhiro Oda

Masashi Miyagawa

Toshio Suzuki

Yasunori Fujimoto

Kazumi Nagano

Katsumi Aoki

Hiroshi Tanabe

Yomishi Toshida

Tsuyoshi Santo

Takefumi Yamada

Yoshikuni Ito

Yuji Aburakawa

Keiko Ikoma

Ryo Yamaguchi

Masako Ichioka

Tatsuro Masamura

Kazuma Tomimoto

Masayuki Miyashita

Manabu Mikami

Hiroyuki Imatake

Noboru Akabame

Hiromasa Fuji

Andreas Czylwik

Masaharu Hata

Tomoyuki Oya

Hirosama Fujii

A relay device is provided that is provided on a first network hierarchy level and relays communications via a network hierarchy level higher than the first level, between a plurality of nodes subordinate to the relay device and a sales broker website, and includes: an application storage unit storing a sales broker application; and an application execution unit executing the sales broker application to cause the relay device to function as: an order data reception unit receiving order data including a plurality of contents; a first order data transmission unit transmitting the order data to the sales broker website; and a second order data transmission unit transmitting, when an order receiver node receiving an order for the product is any of the plurality of nodes, at least a part of the plurality of contents to the order receiver node without involving a level higher than the first level.

Relay device and computer-readable medium

There is provided a communication system capable of achieving a high usage efficiency of frequencies without the need for cooperation of multiplexed users. A communication system communicates over frequency channels set by dividing a frequency bandwidth assigned to the system allows interference between channels by overlapping the adjacent frequency channels with each other in the frequency domain, or a transmitting and receiving device, which transmits and receives a signal by allowing the interference between symbols at a waveform level for each channel to decrease the occupied bandwidth, is provided with ICI removal and ISI compensation filterserving as either an ICI removal filter for removing the interference between channels or an ISI compensation filter for compensating the interference between symbols.

Communication system, transmitting device, receiving device, and communication method

A base station apparatus includes a distribution unit configured to distribute control information on a per-segmented area basis, the segmented area resulting from segmentation of a coverage area into multiple segmented areas, a storage unit configured to store the control information corresponding to the segmented areas, and a determination unit configured to determine a distribution method for each of the segmented areas. The determination unit determines one of a distribution method of periodically distributing the control information corresponding to the segmented areas in the coverage area in charge of the base station apparatus and a distribution method of distributing the control information corresponding to a segmented area requested by a terminal apparatus in response to the requesting by the terminal apparatus.

Base station apparatus and method

A delivery system includes a delivery apparatus for delivering a common control signal to an area having one or more available communication systems and a terminal apparatus for receiving the common control signal transmitted from the delivery apparatus. The common control signal includes system information required to access the communication systems in the area, and the system information includes multiple control information items. The delivery system causes the delivery apparatus to generate a first common control signal commonly used in one or more areas, to receive a delivery request signal from the terminal apparatus requesting to deliver a certain control information item and to generate a second common control signal including the certain control information item to transmit to the terminal apparatus. Criteria to determine which of the control information items is to be included in the first common control signal are updated in accordance with a statistical tendency of the delivery request signals from the terminal apparatuses.

Delivery system, delivery apparatus, terminal apparatus and method

A base station apparatus includes a transmitting unit which transmits control information with an area as a unit, which area is in multiple numbers and each of which area is divided from a coverage area; a storing unit which stores control information corresponding to the divided area; and a determining unit which determines an order of distribution for each of the divided areas. The determining unit includes either or both of a unit which randomly determines the order of distribution for each of the divided areas and a unit which determines an order of distribution for distributing the same information with another base station apparatus.

Randomly varying a distribution order or transmission power of control information from a base station

The second radio communication system selects one or more of the sub-carriers Sto be used in accordance with a condition of the sub-carriers S. The second radio communication system transmits a radio signal by using the sub-carriers Sselected. In the selection of sub-carrier, the sub-carrier Slocated between the plurality of sub-carriers Sradiated in the frequency band BW

Radio communication system

A distribution apparatus which distributes to multiple regions includes: a storage unit which stores each of radio communications systems usable for each of the regions; a selecting unit which selects, out of the multiple regions to which the distribution apparatus distributes, first regions in which a radio communications system in operation is the same; and a distribution unit which distributes, based on each of the radio communications system usable for each of the regions that is stored in the storage unit, all or some of information on the radio communications system for each of the first regions selected by the selecting unit. One or multiple radio communications systems are usable in each of the regions.

Distribution apparatus, terminal apparatus, system, and method

A delivery apparatus for delivering to multiple areas, wherein one or more radio communication systems are available in each of the areas, includes a storage unit configured to store system information for each of the areas, the system information being required to connect to the available radio communication systems, a detection unit configured to detect a second delivery apparatus for delivering to a portion of the delivery areas of the delivery station and a delivery unit configured to deliver system information for each of the areas as control information, the system information being required to connect to a radio communication system available in the area. If the detection unit detects the second delivery apparatus, the delivery unit delivers system information as the control information, the system information in the storage unit excluding a portion of the system information required to connect to a radio communication system available in an area where the second delivery apparatus is responsible for delivering the control information.

Delivery apparatus, terminal apparatus, system and method

A base station includes an internal-area information storing unit storing system information necessary to connect to radio systems in an area to which the base station belongs; an external-area transmission method information storing unit storing external-area transmission method information indicating a method of transmitting a common control signal in an area adjacent to the area to which the base station belongs; and a transmitting unit wirelessly transmitting the common control signal including the system information stored in the internal-area information storing unit or the external-area transmission method information to the terminal equipment. The common control signal including the external-area transmission method information is transmitted at regular or irregular transmission timings.

Base station, terminal equipment, and method for mobile communication system in an environment where areas each including multiple radio communication systems coexist

A communication system capable of achieving a high usage efficiency of frequencies without the need for cooperation of multiplexed users is disclosed. The communication system communicates over frequency channels set by dividing a frequency bandwidth assigned to the system and allows interference between channels by overlapping the adjacent frequency channels with each other in the frequency domain. A transmitting and receiving device, which transmits and receives a signal by allowing the interference between symbols at a waveform level for each channel to decrease the occupied bandwidth, is provided. The receiving device is provided with an Inter-Channel Interference (ICI) removal and Inter-Symbol Interference (ISI) compensation filter serving as either an ICI removal filter for removing the interference between channels or an ISI compensation filter for compensating the interference between symbols.

Communication system, transmission device, reception device, and communication method

A distribution apparatus distributes a common control signal to one or more regions with one or more communications system which can be used. The common control signal includes system information required for accessing the communications system of each of the regions. The distribution apparatus has a unit which generates the common control signal of each of the regions, a unit which receives a distribution request signal from a terminal apparatus which requests for distribution of the common control signal, and a unit which transmits the common control signal according to a distribution rule. The distribution rule is updated according to a statistical trend of the distribution request signals received.

Distribution system, distribution apparatus, terminal apparatus, and method which distribute a common control signal

A radio communication apparatus includes: a receiving unit configured to receive a cognitive signal including system information of each of a plurality of systems; a metric unit configured to prepare metric information indicating relationship degree between the radio communication apparatus and a communication system to which the radio communication apparatus does not belong; a condition determination unit configured to determine whether a restriction should be imposed on transmission by the radio communication apparatus based on the system information and the metric information; and a transmission unit configured to transmit a signal using predetermined radio resources when transmission by the radio communication apparatus is not prohibited.

Radio communication apparatus and radio communication method in communication system

An ink jet image-forming method for forming an image by applying an ink in a fixed amount of 0.5 pl or more to 6.0 pl or less to plain paper. The ink contains a self-dispersion pigment, water, a water-soluble compound having a coefficient of hydrophilicity-hydrophobicity of 0.37 or more as defined by the equation (A) stated in the description and a water-soluble compound having a coefficient of hydrophilicity-hydrophobicity of 0.25 or less, and has a surface tension of 34 mN/m or less. The application of the ink is divided into plural times when an image having a portion where the ink is applied in a duty of 80% or more and an amount of 5.0 &#x3bc;l/cmor less in total is formed in a basic matrix for forming the image, and the amount of the ink applied at each of the times divided is 0.7 &#x3bc;l/cmor less.

Ink jet image-forming method, ink jet color image-forming method and ink jet recording apparatus

The present invention is to provide a communication channel with a low inter-cell interference while suppressing variation in the amount of inter-cell interference. Provided is a base station arranged in a radio communication system configured to implement a frequency division multiple access method by using a frequency division multiplexing method as a modulation method, and configured of cells each divided into an inner region and an outer region. The base station includes an allocation controller configured to perform subchannelization using a perfectly-orthogonal channel in the outer region of the cell, and to perform subchannelization using a quasi-orthogonal channel in the inner region of the cell.

Radio communication apparatus and radio communication method

A wireless resource assigning apparatus for assigning wireless resources to transmission data of a plurality of users is disclosed. The wireless resource assigning apparatus includes a scheduling part configured to start scheduling for all users from a first wireless resource among a plurality of wireless resources prioritized according to a predetermined criterion, and repeat scheduling up to the last wireless resource for users except for users to whom any wireless resource has been assigned.

Wireless resource assigning apparatus and wireless resource assigning method

Growing community of inventors

Yokosuka, Japan

Hitoshi Yoshino