Panasonic Intellectual Property Corporation of America

Panasonic Corporation

Godo Kaisha IP Bridge 1

Optis Wireless Technology, LLC

Sun Patent Trust

Panasonic Holdings Corporation

Tomofumi Takata

Takashi Iwai

Daichi Imamura

Sadaki Futagi

Yoshihiko Ogawa

Atsushi Matsumoto

Seigo Nakao

Katsuhiko Hiramatsu

Hidetoshi Suzuki

Yoshio Urabe

Jun Minotani

Tetsuya Yamamoto

Kenichi Miyoshi

Tomoya Nunome

Akihiko Nishio

Takayuki Nakano

Lilei Wang

Quan Kuang

Ayako Horiuchi

Lei Huang

Masaru Fukuoka

Rojan Chitrakar

Shotaro Maki

Hiroyuki Kanaya

Ryutaro Hashi

The objective of the present invention is to suppress interference on an access point as a result of terminal-to-terminal communication. This terminal is provided with: a control circuit which performs transmission power control of a second link with another terminal, on the basis of a parameter relating to the state of a first link with an access point; and a transmitting circuit which transmits signals in accordance with the transmission power control.

Terminal, and communication method

Provided is a radio communication device capable of reducing interference, caused by non-SR transmission, with a basic service set (BSS) performing spatial reuse (SR) transmission. An SR transmission resource control unit () of the radio communication device (SR initiator) () determines transmission resources for an SR signal to be transmitted by means of SR to a second BSS other than a first BSS to which the radio communication device () belongs on the basis of radio quality information transmitted from other radio communication devices (SR responders) in the first BSS. A radio transmission/reception unit () transmits the SR signal by using the determined transmission resources.

Radio communication device and radio communication method

This communication device is provided with: a reception circuit that receives information pertaining to at least one of a plurality of modes which pertain to the allocation of a common data signal to a plurality of sub-carrier groups; and a control circuit that, on the basis of the information pertaining to the at least one mode, controls the synthesis of the signal allocated to the plurality of sub-carrier groups.

Communication device and communication method

In the present invention, a terminal can appropriately perform a random-access process. In a terminal (), a wireless transmission unit () transmits a random-access signal including at least a data part. A rank determination unit () controls the configuration of the data part on the basis of a parameter regarding the transmission of the random-access signal.

Transmission device, reception device, transmission method, and reception method for random access communication

This wireless communication control device is a first wireless control device provided with: a control circuit that causes the waveform of a reference signal transmitted to a wireless communication device in coordination with a second wireless communication control device to differ, either in the frequency domain or the time domain, from the waveform of a reference signal transmitted to the wireless communication device by the second wireless communication control device; and a transmission circuit that transmits the reference signal.

Wireless communication control device and wireless communication control method to coordinate reference signal waveforms

According to the present invention, a base station can dynamically change a repetition transmission method as appropriate. In a base station (), a repetition control unit () determines a data repetition pattern for a terminal (). A transmission unit () repeatedly transmits data (repetition transmission) on the basis of the repetition pattern. The data repetition pattern corresponds to control information to be reported to the terminal () by dynamic signaling.

Transmission device, reception device, transmission method, and reception method

This base station is provided with: a control circuit that generates information relating to a terminal group among a plurality of terminals, said terminal group being a target of transmission by non-orthogonal multiple access; and a transmission circuit that transmits the information relating to the terminal group during a period in which control information addressed to the plurality of terminals is transmitted.

Base station, terminal, and communication method

The present invention provides a terminal that can carry out a random-access process appropriately. A terminal () is provided with: a wireless transmission unit () that transmits a data signal; and a control unit () that determines a second resource for use in transmitting the data signal on the basis of a first resource for use in transmitting a preamble signal.

Transmission device, reception device, transmission method, and reception method using random access preamble

Provided is a terminal which appropriately transmits and receives signals when operating in an unlicensed band. A terminal () is provided with: a mapping unit () for allocating a signal to a resource on the basis of control information indicating allocation of groups among a plurality of groups obtained by grouping a plurality of blocks into which a frequency band has been divided, and allocation of resources in the blocks; and a transmitting unit () for transmitting the signal.

Transmitting device, receiving device, transmitting method and receiving method

Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit () which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit () which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit () which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.

Integrated circuit for controlling radio communication

The present invention enables more efficient control of Multi-AP coordination. A base station, according to the present invention, comprises: a control circuit that generates shared information that is shared among a plurality of users and includes information pertaining to unassigned resources, and individual user information specific to each of the plurality of users; and a transmission circuit that transmits a control signal comprising the shared information and the individual user information.

Base station, transmission method, and reception method

Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.

Terminal apparatus and sequence assigning method

It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.

Integrated circuit

A base station is provided with: a control circuit that, on the basis of one of a communication parameter which is set in accordance with communication quality and a retransmission control operation, decides the other thereof; and a communication circuit that, on the basis of the communication parameter or retransmission control operation to be decided, communicates with a terminal.

Base station, terminal and communication method

A downlink wireless transmission device comprising: a control circuit that generates common information that is common to a plurality of users and unique user information that is unique to each of the plurality of users and corresponds to information pertaining to retransmission control, said common and unique information including information pertaining to retransmission control for each of the plurality of users; and a transmission circuit that transmits control signals including the common information and the unique user information.

Growing community of inventors

Ishikawa, Japan

Tomofumi Takata