Sun Patent Trust

Panasonic Intellectual Property Corporation of America

Panasonic Corporation

Apple Inc.

Shinsuke Takaoka

Daichi Imamura

Takashi Iwai

Akihiko Nishio

Masayuki Hoshino

Seigo Nakao

Kenichi Miyoshi

Yoshihiko Ogawa

Atsushi Sumasu

Hidetoshi Suzuki

Shozo Okasaka

Ayako Horiuchi

Yoshiko Saito

Katsuhiko Hiramatsu

Yasuaki Yuda

Kenichi Kuri

Ryohei Kimura

Fumiyuki Adachi

Toru Oizumi

Tetsuya Yamamoto

Akihiro Nishio

Disclosed is a wireless communication device that can suppress an increase in power consumption of a terminal while preventing the degradation of SINR measurement precision resulting from TPC errors in a base station. A terminal controls the transmission power of a second signal by adding an offset to the transmission power of a first signal; an offset-setting unit sets an offset correction value in response to a transmission time gap between a third signal transmitted the previous time and the second signal transmitted this time; and a transmission power control unit controls the transmission power of the second signal using the correction value.

Wireless communication device and method for controlling transmission power

Provided are a wireless communication terminal device and a power allocation method, wherein transmission channel quality information, regarding a Pcell having a high probability that UCI is multiplied therein, can be accurately estimated by an SRS having high priority in power allocation, and an eNB can instruct appropriate transmission power to an UL channel which transmits the subsequent UCI. A power scaling detection unit detects whether or not a total transmission power value of the UL channels transmitted by the plurality of CC exceeds the maximum transmission power specific to the UE. When a plurality of SRS are simultaneously transmitted using a Pcell and a Scell, and power scaling occurs, a power scaling control unit performs power allocation so that transmission power of the SRS of the Pcell has the higher priority than that of the SRS of the Scell.

Base station and power allocation method

Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit () that adds a predetermined offset value of '1' or “−1” to one of the start RBG number and the end RBG number of allocated RBG number information (b') output by a scheduling unit (), thereby calculating notified RBG number information (b). An RBG total number setting unit () calculates the total number of RBGs, which is to be notified, by adding “1” to the total number of allocated RBGs. A notified information generating unit () applies the notified RBG number information (b) and the notified total number of RBGs (N′) to a predetermined formula, thereby generating and transmitting, to terminals, notified information (r).

Signaling and utilization of resource allocation information

A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

Integrated circuit for Discrete Fourier Transforming a time signal to a frequency signal

Mobile station and power allocation method

Communication apparatus and method for discrete fourier transforming a time signal to a frequency signal

A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #, a cell #, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #, in a downlink data region in the downlink connection of the base station of the cell #

Base station apparatus, mobile station apparatus, and transmission method

A communication apparatus comprises a generator that generates frequency resource position information corresponding to a first information which is based on the communication quality information received from user equipments, the frequency resource position information indicating validity or invalidity of the first information for each frequency resource, and a transmitter that transmits the first information, the frequency resource position information and a cell ID which the frequency resource position is applied, to another communication apparatus via a backhaul.

Communication apparatus and communication method

Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit () that adds a predetermined offset value of '1' or '&#x2212;1' to one of the start RBG number and the end RBG number of allocated RBG number information (b'i) output by a scheduling unit (), thereby calculating notified RBG number information (bi). An RBG total number setting unit () calculates the total number of RBGs, which is to be notified, by adding &#x201c;1&#x201d; to the total number of allocated RBGs. A notified information generating unit () applies the notified RBG number information (bi) and the notified total number of RBGs (Nrb&#x2032;) to a predetermined formula, thereby generating and transmitting, to terminals, notified information (r).

Communication apparatus and method for Discrete Fourier Transforming a time signal to a frequency signal

Provided is an integrated circuit that calculates a power headroom (PHR) and that can preclude the recognition mismatch in which the reference formats of different UL grants are recognized between a wireless communication terminal apparatus and a wireless communication base station apparatus. For the PHR calculation of a PUSCH in a CC in which no UL grant is present, a UL grant, which was used for calculating the PHR in another CC having the same subframe number as the PUSCH, is used. For example, as to a subframe number=#1, the UL grant of CC #0 is used for calculating the PHR of CC #2 in which no UL grant is present.

Power headroom calculation apparatus and a power headroom calculation method

Growing community of inventors

Osaka, Japan

Shinsuke Takaoka