Sun Patent Trust

Panasonic Corporation

Panasonic Intellectual Property Corporation of America

Matsushita Electric Industrial Co., Ltd.

Optis Wireless Technology, LLC

Atsushi Sumasu

Seigo Nakao

Daichi Imamura

Masayuki Hoshino

Katsuhiko Hiramatsu

Akihiko Nishio

Yoshihiko Ogawa

Ayako Horiuchi

Yasuaki Yuda

Takashi Iwai

Osamu Kato

Kenichi Miyoshi

Shinsuke Takaoka

Shozo Okasaka

Isamu Yoshii

Takahisa Aoyama

Mitsuru Uesugi

Toyoki Ue

Keiji Takakusaki

Toshiyuki Uehara

Jinsong Duan

Keisuke Ebiko

Masayuki Orihashi

Sadaki Futagi

Masaru Fukuoka

Shutai Okamura

Yoshiko Saito

Tomohiro Imai

Hiroki Haga

Hidenori Kayama

Junichi Aizawa

Keiichi Kitagawa

Guizeng Shi

Qiang Wu

Takaaki Kishigami

Ming Xu

Hiroaki Sudo

Zheng Zhao

Naoya Yosoku

Ryohei Kimura

Katsuyoshi Naka

Shoji Miyamoto

Junya Yamazaki

Eiji Ota

Takao Nihei

Noriyuki Maeda

Hiroyuki Atarashi

Sadayuki Abeta

Minori Morita

Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of Stransmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of Rtransmitted from the antenna port; a phase inversion unit which inverts the phase of Stransmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of Rtransmitted from an antenna port.

Mobile station and reception method

An integrated circuit includes circuitry, which, in operation, controls transmitting downlink data to a terminal apparatus; receiving a plurality of transport blocks which are transmitted in a same time period using a same frequency band in a spatial multiplexing scheme, wherein a same acknowledgement information (ACK/NACK) relating to an error detection result of the downlink data is scrambled with different scrambling schemes respectively for the plurality of transport blocks and the respectively scrambled ACK/NACK is multiplexed with data on respective ones of the plurality of transport blocks, and channel quality information (CQI) of a downlink channel is multiplexed with the data on only one transport block of the plurality of transport blocks by the terminal apparatus; and extracting the ACK/NACK and the CQI from the received plurality of transport blocks.

Terminal and communication method thereof

To measure the channel quality of the own cell accurately in a condition where there is no interference from a neighbor cell. A wireless communication terminal according to the invention is a wireless communication terminal to be connected to a base station for transmitting and receiving data to/from the base station, the wireless communication terminal including: a receiver that receives a signal which includes control information provided for measuring a channel quality of own cell from the base station; an extractor that extracts the control information from the signal received by the receiver; a measurement section that measures, on the basis of the control information, the channel quality of the own cell in a domain where a neighbor cell does not transmit a signal; and a transmitter that transmits a measurement result of the channel quality of the own cell measured by the measurement section, to the base station.

Communication apparatus and communication method for measuring a channel quality indicator (CQI)

A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, −1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.

Terminal station apparatus, base station apparatus, transmission method and control method

Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.

A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, &#x2212;1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.

The transmission of a reference signal, such as a CSI-RS, is enabled while maintaining a power saving effect when performing inter-cell cooperative transmission/reception or the like in a plurality of cells. In order to realize inter-cell cooperative transmission/reception, a CSI-RS which is used for estimating the state of a spatial propagation path of a communication line is generated by a CSI-RS generation unit, and the CSI-RS is disposed in a predetermined subframe by a disposition unit and transmitted. At this time, when a frame has ten subframes #0 to #9, the CSI-RS is disposed in the subframes #4 and #9, which are subframes excluding the subframes #0 and #5 incapable of transmitting a CSI-RS and are subframes other than subframes capable of acting as MBSFN subframes when discontinuous communication (Extended Cell DTX) is performed so as to achieve power saving, and transmitted.

Wireless communication device and wireless communication method

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 terminal and a communication method thereof whereby, even in a case of employing an asymmetric carrier aggregation system and further employing a MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal, a transport signal forming unit forms transport signals by arranging, based on an arrangement rule, ACK/NACK and CQI in a plurality of layers. According to the arrangement rule, an error detection result is arranged, on a priority basis, in a layer that is different from a layer in which the channel quality information is arranged. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded.

Wireless communication terminal and communication method for measuring a channel quality indicator (CQI)

Growing community of inventors

Kanagawa, Japan

Atsushi Sumasu