Patent application number | Description | Published |
20090316630 | RADIO COMMMUNICATION SYSTEM AND MOBILE STATION DEVICE - A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device. | 12-24-2009 |
20090316646 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION APPARATUS - To prevent a collision from occurring at the time of random access in cases such as handover, response to paging and the like where a mobile station apparatus performs random access in response to directions from a base station apparatus. In a mobile communication system in which a mobile station apparatus | 12-24-2009 |
20090316666 | RADIO COMMUNICATION SYSTEM AND MOBILE STATION DEVICE - A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device. | 12-24-2009 |
20090316678 | RADIO COMMUNICATION SYSTEM AND MOBILE STATION DEVICE - A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device. | 12-24-2009 |
20100061298 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION APPARATUS - To prevent a collision from occurring at the time of random access in cases such as handover, response to paging and the like where a mobile station apparatus performs random access in response to directions from a base station apparatus. In a mobile communication system in which a mobile station apparatus | 03-11-2010 |
20100098050 | RADIO COMMUNICATION SYSTEM AND MOBILE STATION DEVICE - A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device. | 04-22-2010 |
20100118777 | MOBILE COMMUNICATION SYSTEM, BASE STATTION APPARATUS AND MOBILE STATION APPARATUS - When a mobile station | 05-13-2010 |
20100165943 | BASE STATION DEVICE, MOBILE STATION DEVICE, WIRELESS COMMUNICATION SYSTEM, PROGRAM, RANDOM ACCESS RESPONSE TRANSMITTING METHOD, AND RANDOM ACCESS RESPONSE RECEIVING METHOD - A base station device includes: a random access identification information storage that stores random access identification information and mobile station device identification information correlated with the random access identification information, the random access identification information being allocated by the base station device to the mobile station device, and the mobile station device identification information identifying the mobile station device; a random access receiver that receives random access identification information transmitted by the mobile station device performing random access; a scheduler that, if the random access identification information received is stored in the random access identification information storage while being correlated with the mobile station device identification information, determines whether to transmit random access response information that is a response to the random access corresponding to the random access identification information received by using the mobile station device identification information, or by using identification information having not been allocated to a specific mobile station device, the identification information being allocated for transmitting the response to the random access; and a transmitter that allocates and transmits the random access response information based on the determination by the scheduler. | 07-01-2010 |
20100173634 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION APPARATUS - The time spent in handover is shortened when a mobile station apparatus performs random access for handover. In a mobile communication system where a mobile station apparatus | 07-08-2010 |
20100188982 | BASE STATION DEVICE, MOBILE STATION DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD - A base station device which communicates with a mobile station device, comprising an uplink synchronization managing unit which manages uplink synchronization maintenance status of the mobile station device, and a transmitting unit which transmits a synchronization recovery request to the mobile station which is in the uplink synchronization maintenance status. | 07-29-2010 |
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 |
20100216479 | MOBILE COMMUNICATIONS SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS AND MOBILE COMMUNICATIONS METHOD - When the base station apparatus determines that it is necessary to make the mobile station apparatus execute random access, it is determined whether there is an unused signature. Then, the validity period during which the mobile station apparatus can use a signature is determined and the end time of the validity period is calculated. The signature and the calculated end time are included into a random access preamble allocation message, which is transmitted to the mobile station apparatus. The mobile station apparatus extracts the signature and the end time from the random access preamble allocation message, and determines random access channels through which a random access preamble including the signature can be transmitted, based on the extracted end time. As a result, it is possible to provide a base station apparatus and the like which, even if the signature belongs to the validity period, can achieve efficient communication between the base station apparatus and the mobile station apparatus by assigning the signature to another mobile station apparatus. | 08-26-2010 |
20100246562 | Radio Communication System and Mobile Station Device - A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device. | 09-30-2010 |
20100273501 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND MOBILE STATION APPARATUS - To improve throughput of the whole system while reducing power consumption. In a mobile communication system comprising a mobile station apparatus and a base station apparatus, the base station apparatus creates an interference information table based on channel quality of an uplink channel, and at the same time, transmitting the interference information indicator table to the mobile station apparatus, and the mobile station apparatus determines a state of interference in an uplink frequency band based on the interference information indicator table, determines a frequency band of a measurement pilot channel, which is a pilot channel used to determine received quality, and make a request to the base station apparatus for a transmission resource. For example, the mobile station apparatus determines a frequency band with lowest interference among the uplink frequency bands as a frequency band of the measurement pilot channel. | 10-28-2010 |
20100273502 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND MOBILE STATION APPARATUS - To improve throughput of the whole system while reducing power consumption. In a mobile communication system comprising a mobile station apparatus and a base station apparatus, the base station apparatus creates an interference information table based on channel quality of an uplink channel, and at the same time, transmitting the interference information indicator table to the mobile station apparatus, and the mobile station apparatus determines a state of interference in an uplink frequency band based on the interference information indicator table, determines a frequency band of a measurement pilot channel, which is a pilot channel used to determine received quality, and make a request to the base station apparatus for a transmission resource. For example, the mobile station apparatus determines a frequency band with lowest interference among the uplink frequency bands as a frequency band of the measurement pilot channel. | 10-28-2010 |
20110188593 | MOBILE STATION APPARATUS, MOBILE COMMUNICATION SYSTEM AND TRANSMISSION METHOD - To transmit all the data at a time, while controlling the PAPR to within low levels in a simplified configuration when a response to downlink data, downlink CQI and request for uplink data transmission are made at the same time, a mobile station apparatus | 08-04-2011 |
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 |
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 |
20110292824 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, AND RADIO LINK SYNCHRONIZATION DETERMINING METHOD - While a mobile station apparatus is receiving a plurality of frequency bands, effective determinations of wireless link synchronization can be achieved. The mobile station apparatus measures the reception qualities of a plurality of different downlink frequency band signals (DL_CC | 12-01-2011 |
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 |
20120009959 | COMMUNICATION SYSTEM AND MOBILE STATION APPARATUS - A mobile communication system comprised of one or a plurality of base station apparatuses and a mobile station apparatus; characterized in that the one or plurality of base station apparatuses positions one or a plurality of logical antenna port reference signals, which are inside one or a plurality of logical antenna ports respectively, to different sub-frames; and the mobile station apparatus uses the logical antenna port reference signals of the one or plurality of logical antenna ports to perform channel status measurement. | 01-12-2012 |
20120057531 | CONDITIONAL UPLINK TIMING ALIGNMENT IN A MOBILE STATION DEVICE OF A RADIO COMMUNICATION SYSTEM - A mobile station device transmits a random access preamble, whose preamble ID is randomly selected by the mobile station device, to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble. In an uplink synchronous status, upon receiving the random access response including timing deviation information, the mobile station device ignores the timing deviation information. Otherwise, the mobile station device performs the uplink timing alignment based on the timing deviation information. | 03-08-2012 |
20120244904 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION APPARATUS - To prevent a collision from occurring at the time of random access in cases such as handover, response to paging and the like where a mobile station apparatus performs random access in response to directions from a base station apparatus. In a mobile communication system in which a mobile station apparatus | 09-27-2012 |
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 |
20130281107 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND METHOD TO REDUCE INTER-CELL INTERFERENCE FOR SAME - To improve throughput of the whole system while reducing power consumption. In a mobile communication system comprising a mobile station apparatus and a base station apparatus, the base station apparatus creates an interference information table based on channel quality of an uplink channel, and at the same time, transmitting the interference information indicator table to the mobile station apparatus, and the mobile station apparatus determines a state of interference in an uplink frequency band based on the interference information indicator table, determines a frequency band of a measurement pilot channel, which is a pilot channel used to determine received quality, and make a request to the base station apparatus for a transmission resource. For example, the mobile station apparatus determines a frequency band with lowest interference among the uplink frequency bands as a frequency band of the measurement pilot channel. | 10-24-2013 |
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 |
20140056166 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, MANAGEMENT METHOD IN A MOBILE STATION APPARATUS, PROCESSING SECTION AND COMMUNICATION SYSTEM - Provided are a communication system, a base station apparatus, a mobile station apparatus, and a communication method where a configuration message is transmitted or received. The configuration message includes a measurement configuration, where the measurement configuration includes a measurement object and a reporting configuration. The measurement object is used to determine a first cell from among the plurality of cells, the measurement object is linked to the reporting configuration and indicates the measurement frequency, the reporting configuration includes an criterion, and the criterion triggers the mobile station apparatus to send a measurement report. | 02-27-2014 |
20140092845 | BASE STATION DEVICE, MOBILE STATION DEVICE, PROGRAM, UPLINK SYNCHRONIZATION REQUESTING METHOD, AND SYNCHRONIZATION-SHIFT MEASUREMENT SIGNAL TRANSMITTING METHOD - A mobile station device that includes a receiver configured to receive control information, on a physical downlink control channel from a base station device, using one downlink control information format among a number of downlink control information formats, wherein the one downlink control information format is used for downlink scheduling and a random access order, in a case that the one downlink control information format is used for the downlink scheduling, the control information indicates a downlink resource assignment, and in a case that the one downlink control information format is used for the random access order, a preset value is set for a field of the downlink resource assignment. | 04-03-2014 |
20140105106 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION APPARATUS - A base station apparatus adapted to inform a mobile station apparatus of a signature not reserved as a dedicated signature in case of causing the mobile station apparatus to perform a random access by using a randomly selected signature. | 04-17-2014 |
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 |
20140105167 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A mobile station apparatus ( | 04-17-2014 |
20140185554 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS AND MOBILE STATION APPARATUS - To prevent a collision from occurring at the time of random access in cases such as handover, response to paging and the like where a mobile station apparatus performs random access in response to directions from a base station apparatus. In a mobile communication system in which a mobile station apparatus | 07-03-2014 |
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 |
20140307677 | Conditional Uplink Timing Alignment in a Mobile Station Device of a Radio Communication System - A mobile station device transmits a random access preamble to a base station device. The base station device receives the random access preamble from the mobile station device and transmits, to the mobile station device, a Random Access—Radio Network Temporary Identity (RA-RNTI) which notifies a resource assignment of a random access response. The mobile station device further monitors downlink control channels while detecting both a Cell—Radio Network Temporary Identity (C-RNTI) and the RA-RNTI, in which a downlink control channel includes the RA-RNTI and a downlink control channel includes the C-RNTI which notifies a resource assignment of downlink data. Upon detection of the C-RNTI and the RA-RNTI in a same sub-frame, the mobile station receives both the random access response and the downlink data, or receives either the random access response or the downlink data. | 10-16-2014 |