Matsushita Electric Industrial Co., Ltd.

Godo Kaisha IP Bridge 1

Panasonic Corporation

Panasonic Intellectual Property Corporation of America

Takashi Toda

Akihiko Nishio

Daichi Imamura

Hidetoshi Suzuki

Masatoshi Watanabe

Kuniyuki Kajita

Masayuki Hoshino

Takashi Iwai

Sadaki Futagi

Takashi Tamura

Masaru Fukuoka

A mobile terminal includes circuitry, a transmitter and a receiver. The circuitry, in operation, generates a CQI for each subcarrier (SC) group of multiple subcarrier groups, a plurality of subcarriers consecutive in a frequency domain being grouped into the multiple subcarrier groups. The transmitter, in operation, reports first respective CQIs of the multiple SC groups in inconsecutive time resources based on a first period, and reports, based on a second period, second respective CQIs of the multiple SC groups in inconsecutive time resources based on the first period, the second period being longer than the first period. The receiver, in operation, receives information indicative of the first period.

Integrated circuit for CQI reporting in wireless communication

Provided is a wireless communication mobile station device by which a throughput can be improved in multicarrier communication. In the device, a group control section () controls a subcarrier group, of which CQI is to be reported, among a plurality of subcarrier groups to periodically change, by following pattern information. For instance, the group control section () changes the subcarrier group whose CQI is to be reported, by frame or TTI (Transmission Time Interval). Furthermore, the group control section () specifies the subcarrier group whose CQI is to be reported, to an SINR detecting section () and a CQI generating section ().

A MIMO transmitting apparatus, receiving apparatus, transmission signal formation method, and transmission signal separation method with improved transmission efficiency. In communication apparatus, a mapping unit maps code words into a transmission stream on a per code-block basis and changes, between when a transport block is initially transmitted and when the transport block is retransmitted, the combinations of the code blocks mapped in the same transmission zone. In the communication apparatus, an interference replica generation unit forms, based on the decoded data of successfully decoded code blocks, an interference replica signal corresponding to the successfully decoded code blocks, and a signal separation unit removes, from a plurality of reception streams received this time, the interference replica signal formed by the interference replica generation unit received before the last time reception streams was received and then separates the reception streams received this time into each stream.

MIMO transmitting apparatus, MIMO receiving apparatus, MIMO transmission signal formation method, and MIMO transmission signal separation method

Provided is a terminal that achieves appropriate handover control even in a case where a cell group in which downstream communication is performed by coordination between a plurality of cells is included in a communication system. According to the terminal (), a CoMP quality calculation unit () calculates a comprehensive quality value for a group to be quality calculated on the basis of a reference signal transmitted from the group to be quality calculated, and, when the comprehensive quality value calculated exceeds a CoMP threshold, a measurement control unit () transmits to the communicating cell the quality of the reference signal transmitted from at least one cell of the plurality of cells included in the group to be quality calculated.

Terminal and quality transmission method

Wireless communication base station device and CQI report method

Wireless communication mobile station device, wireless communication base station device and CQI report method

Coding sectionrecodes decoded data stored in decoded data storage section, data conversion sectionconverts data '0' and '1' output from coding sectionto &#x201c;1&#x201d; and &#x201c;&#x2212;1&#x201d; respectively, sum-of-product calculation sectionmultiplies the data output from data conversion sectionby the demodulated data (soft decision value) stored in demodulated data storage sectionand then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision sectiondecides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.

Apparatus and method for decoding

Coding section recodes decoded data stored in decoded data storage section , data conversion section converts data &ldquo;0&rdquo; and &ldquo;1&rdquo; output from coding section to &ldquo;1&rdquo; and &ldquo;&minus;1&rdquo; respectively, sum-of-product calculation section multiplies the data output from data conversion section by the demodulated data (soft decision value) stored in demodulated data storage section and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.

Growing community of inventors

Ishikawa, Japan

Takashi Toda