Sun Patent Trust

Panasonic Intellectual Property Corporation of America

Panasonic Corporation

Sanyo Electric Co., Ltd.

Godo Kaisha IP Bridge 1

Optis Wireless Technology, LLC

Hera Wireless S.a.

Panasonic Holdings Corporation

Panasonic Intellectual Property Management Co., Ltd.

Apple Inc.

Ntt Data Sanyo System Corporation

Hokkaido University

Sanyo Telecommunications Co., Ltd.

Ntt Data Sanyo Systems Corporation

Seigo Nakao

Daichi Imamura

Akihiko Nishio

Masayuki Hoshino

Yoshihiko Ogawa

Ayako Horiuchi

Takashi Iwai

Sadaki Futagi

Atsushi Sumasu

Katsuhiko Hiramatsu

Yasuaki Yuda

Hidetoshi Suzuki

Shinsuke Takaoka

Kenichi Miyoshi

Alexander Golitschek Edler Von Elbwart

Tomofumi Takata

Yoshiko Saito

Ming Xu

Takahisa Aoyama

Toru Oizumi

Yoshiharu Doi

Tetsuya Yamamoto

Takeo Miyata

Yasuhiro Tanaka

Sujuan Feng

Tadayoshi Ito

Masaru Fukuoka

Hui Tong

Shozo Okasaka

Atsushi Matsumoto

Nobuo Higashida

Zhi Zhang

Chi Gao

Michael Einhaus

Takaaki Makita

Nobuhiro Masaoka

Ryohei Kimura

Kiyoshige Ito

Christian Wengerter

Hidenori Matsuo

Kenichi Nakamura

Toyoki Ue

Kenichi Kuri

Hiroaki Morino

Yuichi Kobayakawa

Fumiyuki Adachi

Akifumi Hirata

Yoshiyuki Otani

Katsutoshi Kawai

Yoshuharu Doi

Takaaki Kishigami

Joachim Löhr

Isamu Yoshii

Shinkichi Ikeda

Koji Yamamoto

Tadashi Yoshida

Takashi Enoki

Yuta Seki

Jun Kitakado

Masashi Iwami

Ken Nakaoka

Takayuki Sotoyama

Yasutaka Ogawa

Priya Hariharan

Takeo Ohgane

Toshiaki Sakurai

Toshihiko Nishimura

Richol Ku

Koichi Mori

Alexander Golitchek Edler Von Elbwart

Alexander Golitschek Edler Von Elbawart

Hirotaka Koike

Hiroshi Nishimoto

Kenichi (deceased) Miyoshi

A base station communicates with a terminal, for which an uplink component carrier and downlink component carriers are configured. The base station adjusts a payload size of control information, transmitted in a downlink control channel, based on a basic payload size, and maps the control information onto a search space in at least one of the downlink component carriers. The basic payload size of the control information mapped onto a search space in a primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the primary downlink component carrier, and on a number of information bits obtained from a bandwidth of the uplink component carrier. The basic payload size of the control information mapped onto a search space in a non-primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the non-primary downlink component carrier.

Communication apparatus

A wireless communication base station device which makes it possible to provide a base station, terminal and CCE allocation method capable of reducing the number of times blind decoding of a terminal is performed, without increasing the CCE block rate, even when a plurality of unit bands are set in a terminal. In this device, a search space setting section () sets in each of a plurality of unit bands a common search space in respect of a terminal which is communicating using the plurality of unit bands and other terminals, and sets in each of the plurality of unit bands an individual search space in respect of the terminal. An allocation section () allocates control information solely to CCEs within the common search spaces set in specified unit bands among the plurality of unit bands, or solely to CCEs within individual search spaces set in specified unit bands.

Integrated circuit

Provided is a terminal device that is capable of improving the characteristics of a response signal having poor transmission characteristics when ARQ is utilized in communication using an uplink unit band and a plurality of downlink unit bands associated with the uplink unit band. At the time of channel selection, a control unit selects a resource used in sending a response signal from among specific PUCCH resources notified in advance from a base station and PUCCH resources mapped to a CCE, and controls the transmission of the response signal. A response signal generating unit supports implicit signaling with respect to any given response signal, and at the same time as supporting LTE fallback from 2CC, uses a mapping method that, between bits, smooths the number of PUCCH resources that can determine ACK/NACK simply by determining the PUCCH resource regarding which the response signal had notified.

Communication apparatus and retransmission control method

A base station is disclosed, including an information size adjusting section configured to adjust a size of control information based on a first basic information size of control information mapped on a user equipment (UE) specific search space in a first component carrier. The base station also includes a transmitter configured to transmit the control information mapped on the UE specific search space. A first determination method for determining the first basic information size is different from a second determination method for determining a second basic information size of control information mapped on a common search space in the first component carrier. The first determination method for determining the first basic information size is different from a third determination method for determining a third basic information size of control information mapped on a search space in a second component carrier that is different from the first component carrier.

Radio terminal, radio base station, channel signal forming method and channel signal receiving method

A communication apparatus has a receiver and a decoder. The receiver receives a control signal including first downlink control information and second downlink control information, and receives decoding area information that indicates whether the extended Physical Downlink Control Channel (PDCCH) should be decoded for each of a plurality of terminal apparatuses. The decoder decodes each of a plurality of first mapping candidates in the PDCCH area or decodes each of the plurality of first mapping candidates in the PDCCH area and each of the plurality of second mapping candidates in the extended PDCCH. A number of the second mapping candidates included in the user-specific search space equals to or is more than a number of the first mapping candidates included in the common search space.

Communication apparatus and communication method for receiving control information over a search space

Where first and second reference signals for a first and second communication system, respectively, are transmitted, resources that affect a reception apparatus compatible only with the first communication system can be minimized, and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A, last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used, and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol, or the like, of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information, measures channel quality by using this CSI-RS, and transmits and reports feedback information.

Radio reception apparatus, radio transmission apparatus, and radio communication method

This invention is directed to a terminal apparatus capable of preventing the degradation of reception quality of control information even in a case of employing SU-MIMO transmission system. A terminal, which uses a plurality of different layers to transmit two code words in which control information is placed, comprises: a resource amount determining unit that determines, based on a lower one of the encoding rates of the two code words or based on the average value of the reciprocals of the encoding rates of the two code words, resource amounts of control information in the respective ones of the plurality of layers; and a transport signal forming unit that places, in the two code words, the control information modulated by use of the resource amounts, thereby forming a transport signal.

Communication apparatus and communication method thereof

Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.

A wireless communication base station apparatus which is able to prevent deterioration in the throughput of LTE terminals even when LTE terminals and LTE+ terminals coexist. In this apparatus, based on the mapping pattern of the reference signals used only in LTE+ terminals, a setting unit sets, in each subframe, the resource block groups where the reference signals used only by the LTE+ terminals are mapped. For symbols mapped to the antennas, an mapping unit maps, to all the resource blocks within one frame, cell specific reference signals used for both LTE terminals and LTE+ terminals. For the symbols mapped to the antennas, the mapping unit maps, to the plurality of resource blocks, of which part of the resource block groups is comprised, in the same subframe within one frame, the cell specific reference signals used only for LTE+ terminals, based on the setting results inputted from the setting unit.

Reference signal reception and CQI computation method and wireless communication apparatus

Provided are a terminal device and a retransmission control method that make it possible to minimize increases in overhead in an uplink control channel (PUCCH), even if channel selection is used as the method to transmit response signals during carrier-aggregation communication using a plurality of downlink unit bands. On the basis of the generation status of uplink data and error-detection results obtained by a CRC unit, a control unit in the provided terminal uses response signal transmission rules to control the transmission of response signals or uplink control signals that indicate the generation of uplink data. If an uplink control signal and a response signal are generated simultaneously within the same transmission time unit, the control unit changes the resources allocated to the response signal and/or the phase point of the response signal in accordance with the number and position of ACKs within the error-detection result pattern.

Base station and related communication method

An integrated circuit includes receiving circuitry and transmitting circuitry. The receiving circuitry, in operation, controls reception of a downlink control information on one or more consecutive control channel elements (CCEs) in a search space, and controls reception of downlink data on a downlink resource that is indicated by the downlink control information, the search space being comprised of a plurality of CCEs that includes the one or more consecutive CCEs, and the plurality of CCEs starting on a CCE that is determined from both a number of the one or more consecutive CCEs, and a total number of CCEs configured in a subframe. The transmitting circuitry, in operation, controls transmission of uplink control information on an uplink resource, which is associated with a CCE index of a first CCE of the one or more consecutive CCEs.

Communication apparatus and method of receiving downlink control information and data and transmitting uplink control information

Disclosed are a transmission device and a transmission method with which it is possible to prevent delays in data transmission and to minimize the increase in the number of bits necessary for the notification of a CC to be used, in cases where a CC to be used is added during communication employing carrier aggregation. When a component carrier is to be added to a component carrier set, a setting section provided in a base station: modifies a CIF table that defines the correspondence between code points, which are used as labels for the respective component carriers contained in the component carrier set, and the identification information of the respective component carriers; and assigns a vacant code point to the component carrier to be added, while keeping the correspondence between the code points and the component carrier identification information defined in the CIF table before modification.

Communication apparatus and communication 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 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)

Growing community of inventors

Kanagawa, Japan

Seigo Nakao