Patent application number | Description | Published |
20110141996 | COMMUNICATION SYSTEM, MOBILE STATION DEVICE, AND COMMUNICATION METHOD - A mobile station device which communicates with a base station device, the mobile station device includes: an information acquisition unit which acquires information, which specifies at least one second frequency band different from a first frequency band, transmitted using RRC signaling via a physical downlink shared channel within the first frequency band; a frequency band specification unit which specifies the second frequency band based on the information acquired by the information acquisition unit; and a communication unit which communicates with the base station device with use of the first frequency band or the second frequency band. | 06-16-2011 |
20110261773 | ANTENNA APPARATUS AND BASE STATION APPARATUS - Two types of array antennas having different down tilt angles are used separately between the outside and inside of the cell in consideration of the transmission mode. A base station apparatus is a base station apparatus that performs wireless communications with a mobile station apparatus, and has a first array antenna | 10-27-2011 |
20120106388 | COMMUNICATION SYSTEM, COMMUNICATION APPARATUS AND COMMUNICATION METHOD - In a communication system in which cooperative communication is performed, adaptive control is performed efficiently relating mainly to precoding processing. There are included, in an anchor base station | 05-03-2012 |
20120213111 | WIRELESS COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD AND TERMINAL APPARATUS - A base station is provided with a reference signal for channel state measurement generation part that generates a reference signal for channel state measurement for a mobile terminal to measure a channel state, and transmission antenna parts, that transmit reference signal for channel state measurements to the mobile terminal with each transmission antenna port. The mobile terminal is provided with reception antenna parts, that receive the reference signal for channel state measurements transmitted from the base station in reception antenna ports, and a feedback information generation part which measures a channel state between the transmission antenna port and the reception antenna port based on the received reference signal for channel state measurement to calculate a channel state estimation value, performs grouping on a plurality of channel state estimation values, and generates feedback information for the base station. | 08-23-2012 |
20120300863 | TRANSMISSION DEVICE, RECEPTION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - High transmission efficiency is realized by allowing extension to a number of ports greater than the conventional number of ports through efficient signaling. In a communication system, the highest number of ranks that is the number of spatial multiplex of transmission data transmitted to a terminal device from a base station is 8. The base station generates control information including 3-bit rank information indicating the rank of transmission data, and transmits the transmission data, a reference signal used for demodulating a physical downlink shared channel having the transmission data mapped, and the control information. The terminal device receives the transmission data, the reference signal, and the control information to identify the reference signal using the control information. | 11-29-2012 |
20130044706 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, WIRELESS COMMUNICATION METHOD AND INTEGRATED CIRCUIT - When a common search space and a user equipment-specific search space overlap with each other, and bit numbers of DCI formats transmitted in the common search space and the user equipment-specific search space, respectively are the same as each other, a mobile station apparatus identifies a type of the DCI format. When the common search space and the user equipment-specific search space overlap with each other, and a bit number of a DCI format allocated in the common search space and a bit number of a DCI format allocated in the user equipment-specific search space are the same as each other, a base station apparatus does not allocate the DCI format allocated in the user equipment-specific search space in the overlapped space, and a mobile station apparatus performs blind decoding only of the DCI format allocated in the common search space in the overlapped space. | 02-21-2013 |
20130044711 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS AND COMMUNICATION METHOD - In a system where two or more bands the channel state information of which is to be measured can be configured, measurement target of the channel state or the transmission resource is flexibly configured. In a mobile communication system in which a base station apparatus and a mobile station apparatus communicate with each other using a plurality of component carriers configured by the base station apparatus, the base station apparatus transmits, to the mobile station apparatus, a downlink control information format which is used for scheduling of a physical uplink shared channel on a certain uplink component carrier and, the mobile station apparatus transmits, to the base station apparatus, the channel state information for a downlink component carrier corresponding to the certain uplink component carrier in case that downlink control information included in the downlink control information format is set to request a transmission of the channel state information. | 02-21-2013 |
20130083735 | TERMINAL DEVICE, BASE STATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A terminal communicating with a base station includes: a switching partswitching between a first feedback mode in which one precoder information specifying a preferred precoder and a reception quality indicator specifying a preferred transmission rate are reported periodically and a second feedback mode in which first partial precoder information among first and second partial precoder information specifying the preferred precoder and a set of the second partial precoder information and the reception quality indicator are reported periodically. A report part uses, in the second feedback mode, a periodic resource for reporting the precoder information and reception quality indicator in the first feedback mode, reporting one of the first partial precoder information and the set of the second partial precoder information and the reception quality indicator alternately and in a period two times a report period of the precoder information and reception quality indicator in the first feedback mode. | 04-04-2013 |
20130094368 | TERMINAL DEVICE, BASE STATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A terminal device includes communication means for carrying out communication with a base station device, and generation means for generating a rank indicator specifying a preferred rank, first partial precoder information and second partial precoder information specifying a preferred precoder, and a reception quality indicator specifying a preferred transmission rate. In a first feedback mode in which reception quality information is reported periodically to the base station device, the communication means reports the second partial precoder information and the reception quality indicator at first timing, and reports the rank indicator and the first partial precoder information at second timing different from the first timing. In a second feedback mode in which the reception quality information is reported aperiodically to the base station device, the communication means reports the rank indicator, the first partial precoder information, the second partial precoder information, and the reception quality indicator at the same timing. | 04-18-2013 |
20130142125 | TERMINAL DEVICE, BASE STATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - In a communication system in which a base station performing precoding processing and a mobile terminal communicate with each other, communication is efficiently performed. The terminal device reports to the base station device, information indicating a codebook that the terminal device supports, among a plurality of codebooks. The base station device determines a transmission mode, based on the information indicating the codebook that the terminal device supports. | 06-06-2013 |
20130244587 | TERMINAL APPARATUS, BASE-STATION APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A base-station apparatus ( | 09-19-2013 |
20130265962 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, METHOD AND INTEGRATED CIRCUIT - To provide a mobile station apparatus, a base station apparatus, a method and an integrated circuit which are capable of dissolving complexity of setting by the base station apparatus and performing efficient scheduling by improving the orthogonality of resources of a reference signal for every antenna. A mobile station apparatus which transmits a sounding reference signal to a base station apparatus using a plurality of antenna ports, wherein based on one value set specifically to a mobile station apparatus by a parameter notified of by a higher layer from the base station apparatus, a cyclic shift applied to a sounding reference signal corresponding to the plurality of antenna ports is determined. | 10-10-2013 |
20130272250 | BASE-STATION APPARATUS, TERMINAL APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A base-station apparatus configures a terminal apparatus with information related to mapping between a first channel-state information reference signal and a second channel-state information reference signal and codebook subset restriction information that restricts selection of a codebook subset as feedback information by the terminal apparatus, the codebook subset indicating precoding a weight to perform a first communication and a second communication. Using the information related to the mapping and the codebook subset restriction information, the terminal apparatus selects a codebook to perform the first communication and a codebook to perform the second communication. The terminal apparatus configures the base-station apparatus with information indicating the codebook to perform the first communication and information indicating the codebook to perform the second communication. | 10-17-2013 |
20140016556 | BASE STATION, TERMINAL, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - A base station is provided in which a terminal efficiently controls a demodulation reference signal for a data signal transmitted from the base station in a wireless communication system in which the base station and the terminal communicates with each other. The base station that performs a communication with the terminal includes a data signal generation unit that generates a data signal for terminal, and a demodulation reference signal for a data signal multiplexing unit that multiplexes a demodulation reference signal for a data signal, which is a known signal for demodulating the data signal, into the data signal. The scramble code included in the demodulation reference signal for the data signal is generated based on a first scramble ID and a second scramble ID that are notified from the base station to the terminal. | 01-16-2014 |
20140023157 | TERMINAL, BASE STATION, COMMUNICATION SYSTEM AND COMMUNICATION METHOD - In a communication system in which a base station is able to adaptively control a terminal, a base station, a terminal, a communication system and a communication method which are capable of efficiently supporting a precoding process are provided. The terminal that communicates with the base station selects any of a plurality of codebook subsets obtained by code-booking a precoding weight known to both the base station and the terminal, on the basis of control information which is set by the base station. | 01-23-2014 |
20140036858 | BASE STATION AND TERMINAL - In a radio communications system in which a base station and a terminal communicate with each other, the base station is capable of efficiently notifying the terminal of control information. The base station sets monitoring of a second control channel in the terminal through RRC signaling that is higher-layer control information, the second control channel being a control channel different from a first control channel detectable by the terminal regardless of whether the terminal is in connected state or idle state and being detectable by the terminal only in a case where the terminal is in the connected state. The base station transmits control information for the terminal by mapping the control information to the second control channel. The connected state is a state where the terminal holds information concerning a network, and the idle state is a state where the terminal does not hold information concerning a network. | 02-06-2014 |
20140044088 | TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - There is provided a terminal for performing OFDM (Orthogonal Frequency-Division Multiplexing) communication with a base station forming a cell. The terminal includes a control channel processing unit configured to monitor, in a sub-frame, a first control channel in a cell-specific search space that is a search space common within the cell, and a first control channel in a UE-specific search space that is a search space specific to the terminal. In a case where monitoring of a second control channel different from the first control channel that is in the cell-specific search space or the UE-specific search space is configured, the control channel processing unit monitors, in a sub-frame, at least both the first control channel in the cell-specific search space and the second control channel in the UE-specific search space. | 02-13-2014 |
20140044109 | TERMINAL APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - Provided is a terminal apparatus which performs communication with a base station apparatus. The terminal apparatus includes: a receiving unit which receives a plurality of channel state information reference signals; a channel state information generating unit which generates a plurality of channel state information by referring to each of the plurality of channel state information reference signals; and a report transmitting unit which reports each of the plurality of channel state information to the base station apparatus. | 02-13-2014 |
20140050187 | COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - A base station includes a precoding processor that conducts the same precoding process on a control channel and a reference signal, a controller that sets a plurality of regions including a region in which the reference signal is placed and a region in which the control channel is potentially placed. Different precoding processes are used among different regions. A transmit processor uses resources in a region to transmit the control channel and the reference signal. A mobile station device includes a controller that sets a region on the basis of announced information from the base station device, a propagation channel estimator that averages propagation channel variation estimation values from a plurality of reference signals within the region, and a control channel detector that uses the averaged propagation channel estimation values to detect the control channel that includes control information addressed to the mobile station device. | 02-20-2014 |
20140050189 | BASE STATION AND TERMINAL - In a radio communication system in which a base station and a terminal communicate with each other, the base station is capable of efficiently notifying the terminal of control information. The base station sets monitoring of a second control channel in the terminal through RRC signaling that is higher-layer control information, the second control channel being transmitted using a second transmit port different from a first transmit port used for transmission of a first control channel. The base station transmits control information for the terminal by mapping the control information to the second control channel. The first transmit port is a transmit port used for transmission of a cell-specific reference signal that is a reference signal common within a cell, and the second transmit port is a transmit port used for transmission of a terminal-specific reference signal that is a reference signal specific to the terminal. | 02-20-2014 |
20140050190 | BASE STATION AND TERMINAL - A base station is capable of efficiently notifying a terminal of control information. The base station communicates with the terminal using a sub-frame including a plurality of resource block pairs. The base station sets a second control channel region in the terminal through RRC signaling that is higher-layer control information, the second control channel region being a region set differently from a first control channel region in which a first control channel is to be arranged. The base station transmits control information for the terminal by mapping the control information to a second control channel that is to be arranged in the second control channel region. The first control channel region is set in the sub-frame to be specific to the base station, and the second control channel region is set in the sub-frame to be specific to the terminal in units of the resource block pairs. | 02-20-2014 |
20140133452 | TERMINAL, BASE STATION, COMMUNICATIONS SYSTEM, AND COMMUNICATION METHOD - A terminal that communicates with a base station monitors a physical downlink control channel allocated in a physical downlink control channel region and an enhanced physical downlink control channel allocated in a physical downlink shared channel region different from the physical downlink control channel region. If the enhanced physical downlink control channel is detected, the terminal reports response information via a physical uplink control channel resource corresponding to the resource in which the enhanced physical downlink control channel was detected. | 05-15-2014 |
20140153532 | TERMINAL, BASE STATION, COMMUNICATIONS SYSTEM, AND COMMUNICATION METHOD - A terminal that communicates with a base station monitors a physical downlink control channel allocated in a physical downlink control channel region and an enhanced physical downlink control channel allocated in a physical downlink shared channel region different from the physical downlink control channel region. If the physical downlink control channel is detected, the terminal reports response information via a physical uplink control channel resource corresponding to the resource in which the physical downlink control channel was detected. If the enhanced physical downlink control channel is detected, the terminal reports via a prescribed physical uplink control channel resource. | 06-05-2014 |
20140153536 | COMMUNICATION SYSTEM, TERMINAL, BASE STATION, AND COMMUNICATION METHOD - There are provided a base station, a terminal, a communication system, and a communication method in a wireless communication system in which a base station and a terminal | 06-05-2014 |
20140169209 | COMMUNICATION SYSTEM, TERMINAL, AND BASE STATION - There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The base station includes a higher layer processing unit | 06-19-2014 |
20140169321 | COMMUNICATION SYSTEM, TERMINAL, AND BASE STATION - There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The terminal includes a higher layer processing unit | 06-19-2014 |
20140169322 | TERMINAL, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - There are provided a base station, a terminal, a communication system, and a communication method in a communication system in which a base station | 06-19-2014 |
20140169328 | BASE STATION APPARATUS, TERMINAL APPARATUS AND COMMUNICATION METHOD - A base station is configured to communicate with a terminal using a resource element configured of an area in the frequency direction and an area in the temporal direction, and a resource block pair configured of a predetermined number of the resource elements. The base station includes: a second control channel generating unit configured to generate a second control channel which can be mapped to a second control channel area which is an area different from a first control channel area where a first control channel can be mapped, and which is set to the terminal from the base station in units of the resource block pair. A resource element group which is a group of the predetermined resource elements in the resource block pair of the second control channel area is configured, and the second control channel is mapped to a plurality of the resource element groups. | 06-19-2014 |
20140177531 | COMMUNICATION SYSTEM, TERMINAL, AND BASE STATION - There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unit | 06-26-2014 |
20140177584 | TERMINAL, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A base station, a terminal, a communication system and a communication method are provided. The communication system comprises a base station | 06-26-2014 |
20140185528 | TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - There are provided a terminal, a base station, a communication system, and a communication method allowing a base station to efficiently notify a terminal of control information in a communication system in which the base station and the terminal communicate with each other. A terminal configured to communicate with a base station including a plurality of transmit antenna ports is configured to estimate, based on a channel state information reference signal transmitted from the plurality of transmit antenna ports, a channel state between the base station and the terminal; and to generate power difference information representing a difference between powers for groups of transmit antenna ports that are some of the plurality of transmit antenna ports. | 07-03-2014 |
20140211732 | TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - In a terminal that communicates with a base station, in the case where a physical downlink control channel or an enhanced physical downlink control channel, which is associated with a physical downlink shared channel on a first cell, and an enhanced physical downlink control channel associated with a physical downlink shared channel on a second cell are detected, one physical uplink control channel resource is selected from a physical uplink control channel resource configured for the physical downlink shared channel on the first cell and a physical uplink control channel resource configured for the physical downlink shared channel on the second cell. | 07-31-2014 |
20140247796 | TERMINAL APPARATUS, COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND COMMUNICATION METHOD - In a communication system in which a base station apparatus and a terminal apparatus communicate with each other, a base station apparatus, a terminal apparatus, and a communication system with which the base station apparatus and the terminal apparatus can efficiently communicate with each other are provided. The terminal apparatus that communicates with the base station apparatus includes a radio resource control section | 09-04-2014 |
20140301234 | TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A terminal that communicates with a base station monitors a physical downlink control channel that is arranged in a physical downlink control channel region and that specifies transmission of broadcast information, obtains higher layer control information that specifies monitoring in an extended physical downlink control channel region, which is different from the physical downlink control channel region, and, in a case where the higher layer control information has been obtained, monitors an extended physical downlink control channel that is arranged in the extended physical downlink control channel region and that specifies the transmission of the broadcast information instead of the physical downlink control channel arranged in the physical downlink control channel region. | 10-09-2014 |
20140341145 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, AND COMMUNICATION METHOD - The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. An EPDCCH is made up of an aggregation of one or more resources obtained by dividing one of PRB pairs. In a case where a total number of antenna ports for transmitting reference signals to be used to demodulate signals mapped to the EPDCCH is four, four resources obtained by dividing one of the PRB pairs correspond to the antenna ports of different numbers. In a case where a total number of antenna ports for transmitting reference signals to be used to demodulate signals mapped to the EPDCCH is two, two resources obtained by dividing one of the PRB pairs correspond to the antenna ports of different numbers. The mobile station apparatus includes a reception processor that demodulates, by using reference signals transmitted from the antenna ports corresponding to the resources used for the EPDCCH, signals mapped to the EPDCCH for which decoding and detection are performed. | 11-20-2014 |
20140341146 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, AND COMMUNICATION METHOD - The present invention enables a signal containing control information to be efficiently transmitted and received between a base station apparatus and a mobile station apparatus. The mobile station apparatus includes a first control unit configured to control, for a localized EPDCCH which is an EPDCCH constituted by a resource of one PRB pair, the EPDCCH being constituted by an aggregation of one or more ECCEs, a plurality of PRB pairs being configured as a region to which the EPDCCH is to be possibly mapped, an antenna port associated with a reference signal used for demodulation of a signal mapped to a corresponding ECCE constituted by a resource obtained by dividing the PRB pair. | 11-20-2014 |
20140342746 | COMMUNICATION SYSTEM, MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - It is possible to efficiently transmit and receive signals including control information between a base station apparatus and a mobile station apparatus. A control channel is constituted of one or more first elements. The mobile station apparatus sets a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of resources in one physical resource block, and a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of second elements in a plurality of different physical resource blocks. Each of the second elements is resources obtained by dividing one physical resource block. The mobile station apparatus performs decoding detection of the control channel using the first elements in the set search spaces. | 11-20-2014 |
20140348095 | TERMINAL, BASE STATION, COMMUNICATIONS SYSTEM, AND COMMUNICATIONS METHOD - There are provided a base station, a terminal, a communications system, and a communications method which enable efficient transmission and reception of transmission data even in the case where the base station notifies the terminal of control information via an enhanced physical downlink control channel. | 11-27-2014 |
20140376479 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION METHOD, INTEGRATED CIRCUIT, AND COMMUNICATION SYSTEM - The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. To realize this, second elements are formed using resources that are obtained by dividing one physical resource block pair, each of first elements is constituted by one or more of the second elements, a control channel is constituted by an aggregation of one or more of the first elements, and there is provided a controller that associates any one of the first elements with one or a plurality of the second elements. | 12-25-2014 |
20150023266 | BASE STATION APPARATUS, MOBILE STATION APPARATUS, COMMUNICATION METHOD, INTEGRATED CIRCUIT, AND COMMUNICATION SYSTEM - The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. | 01-22-2015 |
20150036556 | BASE STATION APPARATUS, MOBILE STATION APPARATUS, COMMUNICATION METHOD, INTEGRATED CIRCUIT, AND COMMUNICATION SYSTEM - The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. To realize this, there are provided a receiver configured to receive an enhanced physical downlink control channel from the base station apparatus; a setting unit configured to be able to set, using at least a format of downlink control information included in the received enhanced physical downlink control channel, one of a plurality of possible sets of M, M being the number of first elements that constitute the enhanced physical downlink control channel; and a monitoring unit configured to monitor a search region in which the enhanced physical downlink control channel obtained on the basis of the set possible set of M is possibly mapped. | 02-05-2015 |
20150063241 | BASE STATION, TERMINAL, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - In a radio communication system in which a base station and a terminal communicate with each other, the base station efficiently transmits control information to the terminal. | 03-05-2015 |