Patent application number | Description | Published |
20100195636 | RADIO COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND RANDOM ACCESS METHOD - A radio communication system includes a base station device and a plurality of mobile station devices which radio-communicate with the base station device. The base station device allocates random access signal identifiers for identifying random access signals to the mobile station devices and decides an allocation period for each of the random access signal identifiers used by the mobile base stations. During the allocation period, each of the mobile station devices transmits a random access signal corresponding to the allocated random access signal identifier. Thus, it is possible to suppress a delay until the random access procedure using a dedicated preamble is complete. | 08-05-2010 |
20110103290 | WIRELESS COMMUNICATION SYSTEM, MOBILE STATION DEVICE, AND WIRELESS RECEPTION METHOD - A base station device includes: a control signal generator that generates a signal of control data including items corresponding to the type of sub-frames to be allocated; a scheduling information signal generator that generates a signal of scheduling information indicating a sub-frame to be a first sub-frame among sub-frames specified by first-type sub-frame candidate information; and a multiplexer that allocates the signal of the control data to the first-type and second-type sub-frames, and allocates the signal of the scheduling information to the first-type sub-frame. A mobile station device includes: a frame-type determining unit that determines the type of each of received sub-frames based on the first-type sub-frame candidate information and the scheduling information; and a control data detector that detects, for each sub-frame, the control data including the items corresponding to the type indicated by the result of the determination by the frame-type determining unit. Accordingly, the processing load on reception of control data is reduced. | 05-05-2011 |
20110200004 | WIRELESS COMMUNICATION SYSTEM, MOBILE STATION DEVICE, AND BASE STATION DEVICE - A base station device includes: a control information generating section which generates control information specific to mobile station devices; a control information count indicator generating section which generates a control information count indicator indicating the number of pieces of generated control information of each mobile station device; and a transmitting section which transmits the control information count indicator and the control information. The mobile station device includes: a receiving section which receives a control information count indicator and control information transmitted from the base station device within a mobile station-specific search space selected based on a mobile station ID of the mobile station device; a control information count indicator detecting section which detects the control information indicator; and a control channel decoding section which decodes the control channel in response to the number of pieces of detected control information. | 08-18-2011 |
20110200028 | WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND WIRELESS COMMUNICATION METHOD - A base station device, which allocates one or more subbands of each of an uplink and a downlink to a mobile station device and transmits response information, which indicates whether or not uplink data from the mobile station device has been properly received, to the mobile station device, the base station device includes: a control unit ( | 08-18-2011 |
20110237265 | MOBILE STATION DEVICE, BASE STATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM - Provided is a mobile station device which can increase the success ratio and reduce a communication delay when transmitting a dedicated preamble from the mobile station device to a base station device by using a random access channel (RACH). The mobile station device performs random access to the base station device by using a dedicated preamble. The mobile station device transmits a first message by using the dedicated preamble and again transmits the first message using the dedicated preamble during a period (a random access response reception-uncertain period) when the base station device may transmit a second message as a response to the first message. | 09-29-2011 |
20110256868 | BASE STATION DEVICE, MOBILE STATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A communication system which performs communication between a base station device configuring at least one cell and a mobile station device, wherein: the base station device includes: a synchronization signal generation unit which generates a synchronization signal corresponding to a cell identity for identifying a cell; and a transmission unit which generates a first transmission signal including the synchronization signal using a first parameter obtained from the cell identity, generates a second transmission signal excluding the synchronization signal using a second parameter obtained from a virtual cell identity different from the cell identity, transmits the first transmission signal using a first frequency band, and transmits the second transmission signal via a second frequency band different from the first frequency band. The mobile station device includes: a reception unit which receives a first reception signal including the synchronization signal using the first parameter obtained from the cell identity via the first frequency band and receives a second reception signal using the second parameter obtained from the virtual cell identity via the second frequency band. | 10-20-2011 |
20110281615 | COMMUNICATION SYSTEM AND MOBILE STATION APPARATUS - Provided are a communication system, a base station apparatus, a mobile station apparatus, and a communication method which can effectively manage measurement information held by a base station apparatus and a mobile station apparatus in a system comprising a plurality of component carriers. The mobile station apparatus is used in a mobile communication system configured by a base station apparatus and a mobile station apparatus. For a plurality of cells with each cell having different frequency, the mobile station apparatus manages each of the cells activated by the base station apparatus to be a belonging cell and manages a cell adjacent to the first cell among the aforementioned cells as a cell other than the first cell. | 11-17-2011 |
20110299513 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, RADIO COMMUNICATION METHOD, AND PROGRAM - A mobile station apparatus | 12-08-2011 |
20110317577 | COMMUNICATION SYSTEM AND MOBILE STATION APPARATUS - Provided are a communication system, a base station apparatus, a mobile station apparatus, and a communication method which can effectively manage measurement information held by a base station apparatus and a mobile station apparatus in a system comprising a plurality of component carriers. The mobile station apparatus is used in a mobile communication system configured by a base station apparatus and a mobile station apparatus. For a plurality of cells with the cell having different frequency, a reference cell with respect to an object to be measured is defined as a measurement reference cell when executing a measurement. The mobile station apparatus specifies one or more of the measurement reference cell for the object to be measured and executes a measurement of the object to be measured for the specified one or more of the measurement reference cell. | 12-29-2011 |
20110317627 | COMMUNICATION SYSTEM AND INTERMITTENT RECEPTION METHOD - An efficient discontinuous reception operation is provided for a mobile station device in Advanced-EUTRA. In a mobile station device connected to a base station device using a plurality of component carriers, during discontinuous reception, one discontinuous reception parameter is applied to all the component carriers used by the mobile station device to thereby perform the operation of monitoring a control channel in all the component carriers, and when the control channel addressed to the mobile station device is received in one or more component carriers during a reception ON period, the reception ON period is extended in all the component carriers. | 12-29-2011 |
20120002555 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, INTEGRATED CIRCUIT, AND METHOD OF DETECTING RANDOM ACCESS PROBLEMS - A method of detecting random access problems in a mobile station apparatus which uses multiple component carriers to perform random access. To achieve this, the mobile station apparatus, which is in a mobile communication system comprised of a base station apparatus and mobile station apparatuses, uses one random access channel transmission counter to detect random access problems in the plurality of component carriers. | 01-05-2012 |
20120002580 | MOBILE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM - A mobile station apparatus performs communication with abase station apparatus using a multiple number of component frequency bands, each being a band having a predetermined frequency bandwidth, and includes: a controller setting up a value relating to the transmission power of each component frequency band in accordance with the number of component frequency bands to which radio resources are allocated; and a transmission processor adjusting the transmission power of each component frequency band, based on the value of transmission power set at the controller and transmitting a signal using radio resources of a multiple number of component frequency bands. With this configuration, in a radio communication system using a multiple number of component frequency bands, it is possible to adjust transmission power control in accordance with the number of uplink component frequency bands used for transmission and transmit a signal of a waveform suitable for the radio communication system. | 01-05-2012 |
20120087334 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, RADIO COMMUNICATION METHOD AND COMMUNICATION PROGRAM - Transmission power of a plurality of uplink carrier components used for radio communication by a mobile station device and a base station device is efficiently controlled. The mobile station device communicates by radio with the base station device using a plurality of component carriers. The mobile station device receives, from the base station device, downlink control information that includes information indicating radio resource assignment to a downlink shared channel disposed in any of downlink component carriers of a downlink control channel, and a TPC command to an uplink control channel in an uplink component carrier in which ACK/NACK to the downlink shared channel is transmitted. | 04-12-2012 |
20120093117 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, RADIO COMMUNICATION METHOD AND COMMUNICATION PROGRAM - Transmission power of a plurality of uplink carrier components used for radio communication by a mobile station device and a base station device is efficiently controlled. The mobile station device communicates by radio with the base station device using a plurality of carrier component bands that are predetermined frequency bands. The mobile station device is provided with a radio resource control unit which manages an identifier for identifying the information format of a control channel for transmission power control and the fields for transmission power control of a plurality of uplink carrier components of the mobile station device in the information format, the identifier and the fields being assigned by the base station device, a reception processing unit which receives the control channel of the information format, and a transmission power control unit which, on the basis of transmission power control information included in the fields for transmission power control of the plurality of uplink carrier components, controls the transmission power of each of the uplink carrier components. | 04-19-2012 |
20120106490 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND CONTROL PROGRAM - An antenna for transmission of signals in respective element frequency bands is controlled to reduce power consumption and transmit a good quality signal. A mobile station apparatus performs wireless communication with a base station apparatus using a plurality of element frequency bands having a predetermined frequency bandwidth. The mobile station apparatus includes: a plurality of transmission sections having an antenna and power amplifier; a transmission processing section generating a transmission signal and outputting the signal to at least one of the transmission sections based on information indicating a first transmission mode in which signals are transmitted using a single transmission antenna and a second transmission mode in which signals are transmitted using different transmission antennas respectively. | 05-03-2012 |
20130142146 | RADIO COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND RANDOM ACCESS METHOD - A radio communication system includes a base station device and a plurality of mobile station devices which radio-communicate with the base station device. The base station device allocates random access signal identifiers for identifying random access signals to the mobile station devices and decides an allocation period for each of the random access signal identifiers used by the mobile base stations. During the allocation period, each of the mobile station devices transmits a random access signal corresponding to the allocated random access signal identifier. Thus, it is possible to suppress a delay until the random access procedure using a dedicated preamble is complete. | 06-06-2013 |
20130250863 | BASE STATION DEVICE, MOBILE STATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A communication system which performs communication between a base station device configuring at least one cell and a mobile station device, wherein: the base station device includes: a synchronization signal generation unit which generates a synchronization signal corresponding to a cell identity for identifying a cell; and a transmission unit which generates a first transmission signal including the synchronization signal using a first parameter obtained from the cell identity, generates a second transmission signal excluding the synchronization signal using a second parameter obtained from a virtual cell identity different from the cell identity, transmits the first transmission signal using a first frequency band, and transmits the second transmission signal via a second frequency band different from the first frequency band. The mobile station device includes: a reception unit which receives a first reception signal including the synchronization signal using the first parameter obtained from the cell identity via the first frequency band and receives a second reception signal using the second parameter obtained from the virtual cell identity via the second frequency band. | 09-26-2013 |
20130308443 | COMMUNICATION SYSTEM, MOBILE STATION APPARATUS, RADIO LINK STATE MANAGEMENT METHOD, AND INTEGRATED CIRCUIT - A base station apparatus performing communication through the use of a plurality of frequency bands and a mobile station apparatus wirelessly-connected to the base station apparatus, efficiently manage a radio link state of the frequency band in consideration of a cooperation relation between the plurality of frequency bands. The base station apparatus and the mobile station apparatus communicate with each other by aggregating a plurality of cells of different frequencies, the base station apparatus, in a case of configuring a plurality of cells of different frequencies to the mobile station apparatus, configures linkage information indicating a cooperation relation between an uplink and a downlink for each of the cells, and a timer for managing a state of the cells, and the mobile station apparatus simultaneously changes states of the uplink and the downlink of the cell upon timer being expiration, based on the linkage information for each the cell. | 11-21-2013 |
20140105166 | MOBILE STATION APPARATUS, MANAGEMENT METHOD IN A MOBILE STATION APPARATUS, PROCESSING SECTION, BASE STATION APPARATUS AND COMMUNICATION SYSTEM - A communication system that includes at least a terminal apparatus and a base station apparatus. The terminal apparatus communicates with a base station apparatus by carrier aggregation using a plurality of serving cells, wherein each serving cell of the plurality of serving cells has a different frequency. The terminal apparatus receives (from the base station apparatus) a measurement configuration which includes a reporting configuration, a measurement object to indicate a measurement frequency and a measurement identity which links the measurement object to the reporting configuration. The terminal apparatus, in a case that an entry condition of the event corresponding with an event identity of the reporting configuration is fulfilled, transmits (to the base station apparatus) a measurement report which includes measurement results of all of the serving cells. | 04-17-2014 |
20140185569 | MOBILE STATION DEVICE, RADIO COMMUNICATION METHOD AND CIRCUIT DEVICE - A mobile station apparatus, that communicates with a base station apparatus, includes a reception unit that receives a physical downlink shared channel and information indicating radio resources for transmission of a physical uplink shared channel associated with contention based procedure and a transmission unit that transmits Hybrid Automatic Repeat Request (HARQ) information in response to the physical downlink shared channel and the physical uplink shared channel. The transmission unit also transmits, in case that transmissions of the HARQ information and the physical uplink shared channel happen in a single subframe, either both of the HARQ information and the physical uplink shared channel or the physical uplink shared channel without the HARQ information in the single subframe on the basis of a configuration. | 07-03-2014 |
20140233492 | RADIO COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND RANDOM ACCESS METHOD - A mobile station (MS) performs a first random access procedure using a dedicated preamble for non-contention based random access on a first available random access channel (RACH) of a plurality of RACHs in time domain within a period that the dedicated preamble is valid. In addition, the MS performs a second random access procedure using the dedicated preamble for non-contention based random access on the first available RACH after the predetermined time window has expired in a case that a random access response to the transmitted preamble is not received within a predetermined time window monitoring for the random access response. The MS also transmits the dedicated preamble on a RACH allowed to transmit by the BS, where any one of the RACHs in frequency domain is allowed to be transmitted by the BS over a period of time that the plurality of RACHs are allocated to a single carrier. | 08-21-2014 |
20140286273 | WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND WIRELESS COMMUNICATION METHOD - A terminal apparatus communicates with a base station apparatus using a plurality of downlink subbands and a plurality of uplink subbands. The terminal apparatus receives, in a downlink subband, response information for an uplink data transmitted in an uplink subband in accordance with setting information which is received from the base station apparatus and indicates a relationship between the uplink subband and the downlink subband used to receive the response information, where the uplink subband being one of the plurality of uplink subbands, and where the downlink subband being one of the plurality of downlink subbands. | 09-25-2014 |
20140321420 | WIRELESS COMMUNICATION SYSTEM, MOBILE STATION DEVICE, AND BASE STATION DEVICE - A base station device includes: a control information generating section which generates control information specific to mobile station devices; a control information count indicator generating section which generates a control information count indicator indicating the number of pieces of generated control information of each mobile station device; and a transmitting section which transmits the control information count indicator and the control information. The mobile station device includes: a receiving section which receives a control information count indicator and control information transmitted from the base station device within a mobile station-specific search space selected based on a mobile station ID of the mobile station device; a control information count indicator detecting section which detects the control information indicator; and a control channel decoding section which decodes the control channel in response to the number of pieces of detected control information. | 10-30-2014 |
20140334367 | MOBILE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM - A mobile station (MS) communicates with a base station using a plurality of component frequency bands, each band of the plurality of component frequency bands being a band having a predetermined frequency bandwidth. The MS sets up an upper limit value of transmission power (TP) of each component frequency band in accordance with the number of component frequency bands to which radio resources are allocated at a time. The MS also adjusts the TP of each component frequency band based on the upper limit value of TP set at the controller, wherein the adjusting of the TP is according to the following formula: | 11-13-2014 |
20140334412 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, WIRELESS COMMUNICATION METHOD AND INTEGRATED CIRCUIT - A terminal apparatus that is set to monitor physical downlink control channel candidates in a common search space and a user equipment-specific search space on a downlink component carrier, which are with cyclic redundancy check scrambled by C-RNTI (Cell Radio Network Temporary Identifier), with a same first control channel element index, and with downlink control information of a common payload size and different downlink control information field sets. The terminal apparatus also assumes that, for the physical downlink control channel candidates with the cyclic redundancy check scrambled by the C-RNTI, only either a physical downlink control channel in the common search space or a physical downlink control channel in the user equipment-specific search space is transmitted on the downlink component carrier. | 11-13-2014 |
20150023302 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS AND COMMUNICATION METHOD - A UE receives i) first information (info1) used for configuring a first set and a second set of downlink component carriers (DCCs) (hereinafter “set1” and “set2”), set1 corresponds to a first value of a field of second information (info2), set2 corresponding to a second value of the field of info2, info2 being used for requesting a transmission of channel state information (CSI), and ii) downlink control information (DCI) including info2, using a PDCCH, where the DCI being used for scheduling of a PUSCH in one uplink component carrier. The UE transmits, using the PUSCH, a) the CSI for set1 which is configured in a case that the DCI including info2 is received and a value of the field of info2 is the first value, and b) the CSI for set2 which is configured in a case that the DCI including info2 is received and a value of the field of info2 is the second value. | 01-22-2015 |