Panasonic Corporation

Panasonic Intellectual Property Corporation of America

Panasonic Intellectual Property Management Co., Ltd.

Ryohei Kimura

Masayuki Hoshino

Yasuaki Yuda

Kenichi Miyoshi

Katsuhiko Hiramatsu

Tomohiro Imai

Daichi Imamura

Seigo Nakao

Jinsong Duan

Keisuke Ebiko

Akihiko Nishio

Takaaki Kishigami

Toru Oizumi

Shinsuke Takaoka

Isamu Yoshii

Kenichi Nakamura

Toyoki Ue

Tetsuya Yamamoto

Fumiyuki Adachi

Yoshihiko Ogawa

Hirokazu Kobayashi

Atsushi Sumasu

Yoshiko Saito

Katsuyoshi Naka

Hiroki Haga

Hiroyuki Sasaki

Toshimasa Takaki

Hidenori Kayama

Junya Yamazaki

A control method is provided for controlling a refrigerator that is connected to one or more electrical apparatuses, in which the refrigerator includes a door/drawer and a processor. The control method causes the processor to sense a change in an opened state or a closed state of the door/drawer and receive state information indicating an operation state of the one or more electrical apparatuses from the one or more electrical apparatuses, which are operable when the user is. The processor determines whether the user is cooking based on the received state information, and notifies the user of different information each time a change in the opened state or the closed state is sensed if a change in the opened state or the closed state is sensed when a determination is made that the user is cooking.

Method for controlling a refrigerator and refrigerator

A routing control apparatus that constructs a transmission path for transmitting communication data in a wireless mesh network includes: a previous hop state managing unit that receives a first control signal for constructing a portion of the transmission path, and manages first information indicating operability, which is availability of a previous hop apparatus in a future, the portion being from a source apparatus to the routing control apparatus; an operation state managing unit that manages second information indicating operability of the routing control apparatus; and a routing control processing unit that compares the first information and the second information, and, if the operability of the routing control apparatus is higher than or equal to the operability of the previous hop apparatus, transmits a second control signal for constructing a remaining portion of the transmission path other than the portion.

Routing control apparatus and routing control method

A transmission device capable of reducing packet receiving errors and the number of retransmissions by improving error correction coding gain without increasing the amount of resources used in transmission. The transmission device () that transmits each bit of coded data constituted from systematic bits and parity bits in order for each transmission unit, and performs frequency puncturing to puncture, in units of symbols, data to be punctured in which each bit has been superimposed on a plurality of frequency domain symbols. A time puncturing unit () extracts transmission unit data from the coded data and a frequency puncturing unit () performs frequency puncturing in accordance with the ratio of parity bits to systematic bits included in the data.

Transmission device and transmission method

An SC-FDMA transmission device capable of achieving excellent error rate characteristics on any propagation channel, wherein a determination unit () determines the ratio of the frequency puncturing amount to the time puncturing amount in the total puncturing amount on the basis of a puncturing determination rule, and a setting unit () sets the time puncturing amount and the frequency puncturing amount on the basis of this ratio. Here, in the puncturing determination rule, the ratio is determined from the MCS of the encoded data, the number of resources allocated to the encoded data, and the delay spread of the propagation channel between a receiving device and the transmission device ().

SC-FDMA transmission device and transmission method

Provided are white space sharing control method, database device, agent device and communication system with which use of white space (WS) is controlled when a plurality of WS wireless devices compete for use of WS. In ST, an application A proxy device arbitrates WS channel use requests received from a plurality of application A first WS wireless devices and combines these requests into one, and, in ST, the application A proxy device transmits the arbitrated WS channel use request and location information to a frequency database apparatus. In ST, the frequency database apparatus decides whether or not application A and application B are available on the basis of the 'arbitrated WS channel use request and location information' and 'priority ranking information according to use'. In ST, the frequency database apparatus updates application A database information and application B database information on the basis of the decision result.

White space sharing based on priority of competing applications

Disclosed is a technique for providing a transmission data processing method and the like capable of estimating a communicable band in a heterogeneous multi-radio network at a higher speed and minimizing the deterioration of the video quality even if an unavoidable fluctuation occurs in a band available for transmission. According to the technique, there is provided a transmission data processing method at a stage prior to data transmission by a transmission devicefor providing the data transmission to a reception deviceas a communication partner, including: a priority giving step of giving priority to each data of multiple pieces of data, to be transmitted to the reception device, based on a predetermined criterion; a feedback receiving step of receiving, from the reception device, feedback information on data transmitted from the transmission device to the reception device; and a distribution step of distributing, based on the priority and the feedback information received, the multiple pieces of data into a first interface and a second interface used for communication with the reception device.

Transmission data processing method, information processing method, transmission device, and reception device

A wireless communications device that transmits a multiplexed signal of a plurality of data sets of different sizes to a communications terminal includes an empty resource block detection section, which detects empty resource blocks of the data sets each of which does not use any of a predetermined number of resource blocks, from among the plurality of data sets whereto the predetermined number of resource blocks are allocated in the time direction and the frequency direction; and a data redistribution section that redistributes a part of data that is distributed in resource blocks, with respect to the data sets whereto resource including empty resource blocks are allocated, in the vicinity of pilot symbols that are disposed within the empty resource blocks. It is possible to effectively utilize the function of all the pilot symbols and improve error rate characteristics.

Wireless communications device and data redistribution method

The signaling amount in selecting a plurality of beams is reduced in pre-coding to enhance throughput. When notification of a beam number is provided in a feedback signal from an user equipment to a radio base station, a superior beam number, having a high quality rank with small time variation, is bound up and fixed for a predetermined time period and notification of only a inferior beam number is provided within the predetermined time period. For example, to select three beams among six beams, first, notification of the superior two beam numbers (beam numbers 'b' and 'c') is provided. These beam numbers are fixed for a predetermined time period and then notification of only the inferior one beam number (beam number &#x2018;e&#x2019;) is provided within the predetermined time period. Thus, the signaling amount for providing beam number notification is reduced.

Radio communication for reducing the signaling amount in selecting a plurality of beams in pre-coding for enhancing throughput

A base station, a mobile station and a retransmission control method for enabling communication to be more efficiently performed. In a communication system comprising a base station () and a mobile station (), a time period required for the retransmission of a transport packet to complete is determined, and a retransmission control is performed, based on the required time period, to change the order of executing the retransmission of the transport packet and a handover. In this way, when it is estimated that the retransmission will complete soon, the retransmission is caused to complete in a handover source system, thereby avoiding waste of communication resources used in the preceding transmission and retransmission processes. When it is estimated that the retransmission will continue for a while, the communication resources used in the preceding transmission and retransmission processes are wasted, but a more appropriate MCS can be assigned, in a handover destination system, so as to perform a retransmission, thereby enabling communication to be efficiently performed.

Retransmission control method, base station and mobile station

A base station () reduces overhead created by the notification of user allocation information (individual control information) in performing multi-user MIMO transmission. The base station () has spatial multiplex signal forming units (individual data sequence creation unit () and beam formation unit ()) that form signals that are spatial multiplex transmitted from multiple antennas, a common control signal formation unit () that forms common control signals that are transmitted in common from multiple antennas, and an individual control signal appending unit () that includes an individual control signal for each terminal address in a spatial multiplex transmitted signal.

Base station device and terminal device

The signaling amount in selecting a plurality of beams is reduced in pre-coding to enhance throughput. When notification of a beam number is provided in a feedback signal from a user equipment to a radio base station, a superior beam number, having a high quality rank with small time variation, is bound up and fixed for a predetermined time period and notification of only a inferior beam number is provided within the predetermined time period. For example, to select three beams among six beams, first, notification of the superior two beam numbers (beam numbers 'b' and 'c') is provided. These beam numbers are fixed for a predetermined time period and then notification of only the inferior one beam number (beam number &#x2018;e&#x2019;) is provided within the predetermined time period. Thus, the signaling amount for providing beam number notification is reduced.

Provided is a wireless communication device which can improve the notification accuracy of the channel state information (CSI) without straining the feedback circuit. In this device, a channel estimator () uses a pilot signal input from a wireless receiver () to estimate the channel and obtain a plurality of path gains in each of a plurality of delay periods. Then, the channel estimator () outputs the plurality of path gains to a quantizer (). The quantizer () quantizes the plurality of path gains in the number of notification bits corresponding to each of the plurality of delay periods based on the correspondence of the delay period and the number of notification bits input from a setting unit ().

Wireless communication device and quantization method

A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block.

Radio communication apparatus and radio communication method

Provided are a radio reception device, a radio transmission device, and a feedback method which can uniformly guarantee the feedback accuracy of an average channel quality indicator (CQI) even when the transmission band width is different. A channel estimation unit uses a pilot signal to obtain SINR for each RB. A feedback information generation unit converts SINR of each RB into a corresponding CQI. Moreover, as the transmission band width increases, the number X of the quantization bits is decreased when quantizing the average CQI, thereby generating feedback information. A radio transmission unit transmits feedback information from an antenna.

Radio reception device, radio transmission device, and feedback method

The signaling amount in selecting a plurality of beams is reduced in pre-coding to thereby enhance the throughput. To select a plurality of beams when the pre-coding is applied, when notification of a beam number is provided in a feedback signal from a user equipmentas a reception station to a radio base stationas a transmission station, a superior beam number having a high quality rank with small time variation is bound up and fixed for a predetermined time period and notification of only a inferior beam number is provided within the time period. For example, to select three beams from six beams, first, notification of the superior two beam numbers (beam numbers 'b' and 'c') is provided and the superior beam numbers are fixed for a predetermined time period and then notification of only the inferior one beam number (beam number &#x2018;e&#x2019;) is provided within the predetermined time period for reducing the signaling amount for providing beam number notification.

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Kanagawa, Japan

Ryohei Kimura