Patent application number | Description | Published |
20100016005 | COMMUNICATION TERMINAL APPARATUS, COMMUNICATION CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEMS, AND RESOURCE ALLOCATION REQUEST METHOD - A communication terminal apparatus requests resource allocation to a communication control apparatus without allocating any dedicated resource for resource request. The communication terminal apparatus is applied to a wireless communication system in which the communication control apparatus allocates resources used when a communication terminal apparatus | 01-21-2010 |
20100098051 | MOBILE COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, AND MOBILE COMMUNICATION METHOD - A mobile station device that communicates with a base station device, including: a downlink synchronization error detecting portion that detects the occurrence of a downlink synchronization error from the measurement result of a transmission signal of the base station device; a synchronization monitoring portion that sets information showing the occurrence of a downlink synchronization error into a random access channel based on the downlink synchronization state or both the downlink and uplink synchronization states of the mobile station device; and a downlink synchronization error notifying portion that transmits the random access channel to the base station device. | 04-22-2010 |
20110136528 | COMMUNICATION TERMINAL APPARATUS, COMMUNICATION CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND RESOURCE ALLOCATION REQUEST METHOD - A communication terminal apparatus requests resource allocation to a communication control apparatus without allocating any dedicated resource for resource request. The communication terminal apparatus is applied to a wireless communication system in which the communication control apparatus allocates resources used when a communication terminal apparatus | 06-09-2011 |
20120157101 | COMMUNICATION SYSTEM, MOBILE STATION APPARATUS, AND BASE STATION APPARATUS - In a communication system in which a mobile station apparatus is connected to a base station apparatus simultaneously using a plurality of frequency bands, an event is efficiently determined concerning measurement of reception qualities of the frequency bands. The mobile station apparatus includes: a reception unit that receives from the base station apparatus an event condition for measuring a reception quality of at least one carrier component defined in the frequency bands different from each other and a parameter used for determining whether or not the event condition is satisfied; a measurement processing unit that measures the reception quality of the at least one carrier component; a cell determination unit that determines whether to adjust the received parameter; and an event determination unit that sets the event condition based on the received parameter or the adjusted parameter and that determines whether or not the set event condition is satisfied. | 06-21-2012 |
20120170532 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD - Provided are a mobile station apparatus, a wireless communication system, and a wireless communication method that can improve reliability of handover while efficiently and early completing the handover. A mobile station apparatus | 07-05-2012 |
20120182921 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND COMMUNICATION METHOD - To perform MBMS transmission capable of effective utilization of resources without increasing load in a mobile station apparatus. In a wireless communication system including a base station apparatus and mobile station apparatuses to provide an MBMS (Multimedia Broadcast Multicast Service), the base station apparatus transmits a message for aggregating the number of mobile station apparatuses requesting an MBMS to a mobile station apparatus being served, and, among the mobile station apparatuses, the mobile station apparatus requesting an MBMS adds intra-cell location information of its own to a response message to the message and transmits the response message added with the intra-cell location information to the base station apparatus. | 07-19-2012 |
20120188961 | MOBILE STATION APPARATUS, RADIO COMMUNICATION METHOD, AND CONTROL PROGRAM FOR MOBILE STATION APPARATUS - A plurality of uplink and downlink component carriers are allocated from a base station apparatus, a common search space of a specific downlink component carrier of the allocated downlink component carriers is monitored, and random access processing is started in any one of the uplink component carriers. A mobile station apparatus applied to a communication system allocates to any mobile station apparatus the plurality of downlink component carriers including the common search space to be monitored together with any other mobile station apparatus. In performing random access to said base station apparatus, the mobile station apparatus extends a monitored object of a physical downlink control channel from a first common search space of the downlink component carrier to a second common search space of any downlink component carrier other than the downlink component carrier including the first common search space. | 07-26-2012 |
20120300701 | 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. | 11-29-2012 |
20130034069 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, INTEGRATED CIRCUIT, AND MOBILE STATION APPARATUS CONTROL PROGRAM - When a mobile station apparatus capable of being connected to a base station apparatus by using a plurality of frequency bands performs an uplink transmission, the mobile station apparatus selects the optimum combination among the combinations of a plurality of frequency bands and uplink transmission methods, and performs the uplink transmission. The mobile station apparatus aggregates a plurality of cells to connect the same to a base station apparatus and requests, from the base station apparatus, an uplink radio resource required to transmit uplink data. The mobile station apparatus selects, based on a first condition, an uplink for making a radio resource request using a random access channel from the plurality of cells, and selects, based on a second condition, either the radio resource request using the random access channel or the transmission of uplink data using an uplink radio resource common to other mobile station apparatuses. | 02-07-2013 |
20130051341 | WIRELESS COMMUNICATION METHOD, MOBILE STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND INTEGRATED CIRCUIT - To perform control of PUSCH retransmission efficiently in a wireless communication system where a mobile station apparatus and a base station apparatus communicate with each other using a plurality of downlink component carriers. In a mobile station apparatus which communicates with a base station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers, in case that the downlink component carrier corresponding to the uplink component carrier is set not to be used for downlink communication, the mobile station apparatus flushes HARQ buffers of the uplink component carrier associated with the downlink component carrier set not to be used for downlink communication. | 02-28-2013 |
20130064173 | RELAY NODE AND MOBILE TELECOMMUNICATIONS SYSTEM - A relay node operable to maintain an access link to a UE and a backhaul link to a D-eNB, wherein each of access link and backhaul links are controlled by separate states. The separate states may be independent from one another. The backhaul link consists of at least two states: the first state and the second state of backhaul link. In the first state, a relay node monitors signals from D-eNB continuously. In the second state, a relay node monitors signal from D-eNB discontinuously. The access link consists of at least two states: the first state and the second state of access link. In the first state, a relay node transmits common control signals. In the second state, a relay node can pause the transmission of common control signals or transmit common control signals in longer period than in the first state of access link (DTX). | 03-14-2013 |
20130095838 | MOBILE STATION APPARATUS, COMMUNICATION SYSTEM, BASE STATION APPARATUS, CELL RESELECTION METHOD, CONTROL PROGRAM OF MOBILE STATION APPARATUS, AND INTEGRATED CIRCUIT - Efficient cell reselection taking the continuity of MBMS service into consideration is enabled. A communication system includes a base station apparatus managing a cell capable of providing a multimedia broadcast multicast service, and a mobile station apparatus belonging to a group of access-restricted cells, and the mobile station apparatus selects the access-restricted cell from the serving cell capable of providing the multimedia broadcast multicast service. The base station apparatus periodically transmits multimedia broadcast multicast service information to the mobile station apparatus (S | 04-18-2013 |
20130215848 | BASE STATION APPARATUS, MOBILE STATION APPARATUS, MOBILE COMMUNICATION SYSTEM, COMMUNICATION METHOD, CONTROL PROGRAM, AND INTEGRATED CIRCUIT - In a case where a transmission timing in a mobile station apparatus varies among individual cells, efficient random access can be performed. A base station apparatus which is applied to a mobile communication system in which random access from a mobile station apparatus to a base station apparatus is executed allocates a plurality of cells to the mobile station apparatus, groups the cells into groups in each of which cells have an identical transmission timing in the mobile station apparatus, notifies the mobile station apparatus of transmission timings determined for the individual groups, permits the mobile station apparatus to execute random access using any one of the cells included in the groups, and notifies the mobile station apparatus of random access execution information about the cell for which random access is permitted. | 08-22-2013 |
20130279486 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, CONTROL METHOD, AND INTEGRATED CIRCUIT - In a mobile station that performs communication with a base station device via a plurality of cells, the plurality of cells are grouped into a first group constituted by cells having an uplink transmission timing that is the same as that of one primary cell and a second group constituted by one or more cells having an uplink transmission timing that is different from that of the primary cell. The uplink transmission timings are each managed using a corresponding transmission timing timer for each of the groups. In a case where a transmission timing timer for the first group has expired, the mobile station stops all uplink transmissions in the plurality of cells. In a case where a transmission timing timer for the second group has expired, the mobile station stops uplink transmissions in the cells constituting the second group for which the transmission timing timer has expired. | 10-24-2013 |
20130343358 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - A plurality of cells include one primary cell and one or more secondary cells. The primary cell and the secondary cells are grouped into a first transmission timing group that includes a secondary cell having an uplink transmission timing that is the same as an uplink transmission timing of the primary cell, and a second transmission timing group that includes secondary cells having an identical uplink transmission timing that is different from the uplink transmission timing of the primary cell. Upon receipt of a transmission timing message which contains transmission timing information and transmission timing group information regarding a transmission timing group to which the transmission timing information is to be applied, the mobile station apparatus applies the transmission timing information to a cell of a transmission timing group that is based on the transmission timing group information. | 12-26-2013 |
20140029595 | COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, RANDOM ACCESS PROCESSING METHOD, AND INTEGRATED CIRCUIT - A base station device uses a downlink control channel and instructs a mobile station device to perform a random access procedure. The mobile station device switches, according to whether or not random access parameters are included in parameters of a secondary cell that has been allocated to the mobile station device, between a first random access procedure in which information in a carrier indicator field included in the downlink control channel is not used for selection of a cell in which a random access procedure is performed, and a second random access procedure in which information in the carrier indicator field included in the downlink control channel is used for selection of a cell in which a random access procedure is performed. | 01-30-2014 |
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 |
20140126516 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - A mobile station apparatus performs an efficient random access procedure. A base station apparatus includes all parameters of random access information in setting information regarding at least one of a plurality of cells and part of the parameters of the random access information in setting information regarding at least one of the plurality of cells and transmits the setting information to the mobile station apparatus. The mobile station apparatus executes the random access procedure for the cells for which the random access information is included in the transmitted setting information. | 05-08-2014 |
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 |
20140140318 | MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, MOBILE STATION APPARATUS CAPABILITY NOTIFICATION METHOD, AND INTEGRATED CIRCUIT - An object of the invention is to provide a mobile station apparatus, a base station apparatus, a communication system, a mobile station apparatus capability notification method, and an integrated circuit, which enable uplink transmission timing support information of the mobile station apparatus to be effectively notified to the base station apparatus. The mobile station apparatus that is connected to the base station apparatus by aggregating a plurality of cells of which frequencies are different from each other transmits capability information in which information related to an uplink transmission timing supported by the mobile station apparatus is associated with the plurality of frequencies supported by the mobile station apparatus, to the base station apparatus. | 05-22-2014 |
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 |
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 |
20140194126 | MOBILE STATION, BASE STATION, AND METHOD FOR MANAGING SYNCHRONIZATION STATE - A synchronization state is efficiently managed in a mobile station to which cells are allocated. A base station notifies the mobile station of information about whether or not a transmission timing before a handover for each of cell groups of the mobile station is to be applied after the handover. The mobile station sets whether or not the transmission timing adjusted for each cell group is to be applied after the handover, on the basis of the received information. | 07-10-2014 |
20140221038 | MOBILE STATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - In a system including at least one base station device, the base station device efficiently controls uplink signals. A mobile station device includes a path loss calculation unit | 08-07-2014 |
20140241301 | MOBILE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - In a communication system including multiple mobile station apparatuses and at least one base station apparatus, the base station apparatus efficiently controls transmission of an uplink signal to the mobile station apparatuses. A path loss calculator calculates path loss on the basis of a reference signal received by a reception processing unit. A transmit power setter sets desired transmit power of an uplink signal using the path loss calculated by the path loss calculator. Additionally, a power head room controller generates power head room that is information concerning a margin of the transmit power using the desired transmit power set in the transmit power setter to control transmission of the power head room. The power head room controller determines to transmit the power head room upon switching of a kind of the reference signal used in the calculation in the path loss calculator. | 08-28-2014 |
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 |
20140348143 | WIRELESS COMMUNICATION SYSTEM, MOBILE STATION APPARATUS, BASE STATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - A base station apparatus assigns a plurality of cells to a mobile station apparatus, and the base station apparatus and the mobile station apparatus communicate with each other via the plurality of cells. The plurality of cells are grouped into a plurality of groups, each group being made up of at least one cell having an identical transmission timing in the mobile station apparatus. In a case where a cell that has been deleted from one of the plurality of groups is added to another one of the plurality of groups in accordance with an instruction from the base station apparatus, the mobile station apparatus sets the added cell to be in a deactivated state. | 11-27-2014 |
20150036574 | TERMINAL APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, CONTROL METHOD, AND INTEGRATED CIRCUIT - The present invention provides techniques related to a terminal apparatus, base station apparatus, communication system, control method, and integrated circuit for performing efficient transmission and reception control between a mobile station apparatus and a base station apparatus to thereby reduce power consumption and improve radio resource utilization. The terminal apparatus sends capability information indicating whether notification of a state relating to power consumption of the terminal apparatus is possible or not to the base station apparatus, and upon receiving a parameter indicating start of determination on the state relating to the power consumption of the terminal apparatus from the base station apparatus, determines the state relating to power consumption based on the current communication state configurations of the terminal apparatus and sends state information representing the result of the determination on the state relating to power consumption to the base station apparatus. | 02-05-2015 |
20150050938 | TERMINAL APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, RADIO RESOURCE REQUESTING METHOD AND INTEGRATED CIRCUIT - Provided are a terminal apparatus, a base station apparatus, a communication system, a radio resource requesting method, and an integrated circuit that can improve efficiency of radio resource use by efficiently performing a radio resource request control between a mobile station apparatus and the base station apparatus. The base station apparatus configures a transmission parameter of a control channel used in the radio resource request and a parameter for determining a transmission state of the control channel used in the radio resource request in the terminal apparatus. The terminal apparatus transmits a message related to a permission to change the transmission parameter of the control channel used in the radio resource request to the base station apparatus on the basis of the transmission state of the control channel used in the radio resource request. | 02-19-2015 |