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Hiroyuki Ishii, Kanagawa JP

Hiroyuki Ishii, Kanagawa JP

Patent application numberDescriptionPublished
20080214226Wireless Communication Control System, Radio Base Station, and Wireless Communication Control Method - A radio communication control system (09-04-2008
20090002713Optical Coherence Tomography System - There is provided an optical coherent tomography device capable of enlarging a measurement range by removing the affect of a folded image. The device includes an optical phase modulator (01-01-2009
20090042571MOBILE STATION AND FEEDBACK INFORMATION GENERATING METHOD - The present invention provides a mobile station for communicating with a radio base station wherein a closed loop transmit diversity for transmission with use of a plurality of antennas is applied to the radio base station, comprising: a feedback information control unit controlling a feedback information control process based on the number of radio base stations simultaneously communicating with the mobile station. The mobile station can generate feedback information suitable for a shared physical channel in an intra-cell handover. On the other hand, the mobile station can generate feedback information suitable for a dedicated physical channel in an inter-cell handover.02-12-2009
20090061874BASE STATION, MOBILE COMMUNICATION SYSTEM, AND MOBILE COMMUNICATION CONTROL METHOD - A target base station transmits a traffic assignment signal a plurality of times to a control station for notifying a traffic amount of downlink data that can be processed by the target base station, after a notified cell change timing in which the mobile station changes a communicating base station.03-05-2009
20090067376PACKET TRANSMISSION CONTROL DEVICE, AND PACKET TRANSMISSION CONTROL METHOD - A disclosed packet transmission control apparatus that controls packet transmission to plural radio terminals includes a priority determination portion that determines a packet assignment priority in accordance with at least one of presence/absence of retransmission data and the number of data transmissions, and a radio terminal selection portion that selects a radio terminal to be a communications party in accordance with the priority.03-12-2009
20090073927COMMUNICATION CONTROL APPARATUS AND COMMUNICATION CONTROL METHOD - A communication control apparatus (03-19-2009
20090215484WIRELESS COMMUNICATION CONTROL SYSTEM, RADIO BASE STATION AND WIRELESS COMMUNICATION CONTROL METHOD - A radio communication control system controlling a transmission power of a shared control channel for transmitting a control signal to a plurality of mobile stations. The system includes a transmission power lower limit value setting section configured to set a lower limit value of the transmission power of the shared control channel, and to set the transmission power of the shared control channel at the lower limit value when the transmission power of the shared control channel is lower than the lower limit value.08-27-2009
20090310556BASE STATION, MOBILE COMMUNICATION SYSTEM, MOBILE STATION AND COMMUNICATION CONTROL METHOD - A base station for communicating to a mobile station that transmits an uplink signal in accordance with a SC-FDMA scheme or an OFDMA scheme includes an adjustment amount range setting unit configured to set an adjustment amount for adjusting a transmit timing of the uplink signal to have different ranges depending on types of a channel transmitted by the mobile station.12-17-2009
20100034077BASE STATION APPARATUS, USER APPARATUS AND METHOD USED IN MOBILE COMMUNICATION SYSTEM - A base station apparatus is used in a mobile communication system that uses an OFDM scheme in a downlink. The base station apparatus includes: a unit configured to perform inverse Fourier transform on a signal in which a first signal and a second signal is mapped to subcarriers with different transmission power density, and to generate a transmission signal; and a transmission unit configured to transmit the transmission signal to a user apparatus. A subcarrier (prohibited subcarrier) in which mapping of the second signal is prohibited is determined such that transmission power density of the second signal is kept constant among a plurality of OFDM symbols regardless of whether the first signal is included in an OFDM symbol including the second signal. The prohibited subcarrier is determined based on a subcarrier to which the first signal is mapped.02-11-2010
20100034174BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - The object is achieved by a base station apparatus performing communications with mobile stations transmitting an uplink signal based on a frequency division multiple access scheme, the base station apparatus being provided with a unit for calculating an uplink interference wave level IoT and receive quality SIR of a pilot signal based on an uplink reference signal.02-11-2010
20100041430BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus is disclosed that is capable of communicating with a user equipment terminal using a shared channel in downlink and controlling transmission power of a control channel reporting identification information of the user equipment terminal receiving the shared channel and a transmission format of the shared channel. The base station apparatus includes a transmission power control unit configured to control the transmission power of the control channel based on downlink radio quality information reported from the user equipment terminal and an offset value determined based on communications quality of the control channel.02-18-2010
20100048214WIRELESS LINE CONTROL STATION, BASE STATION, MOBILE STATION, MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION METHOD - A radio network controller includes: a determination unit configured to determine a transmit diversity method to be used to transmit a signal from a base station to a mobile station, in accordance with a soft handover status of the mobile station; and an instruction/notification unit configured to instruct the transmit diversity method to the base station, in accordance with the determination result by the determination unit.02-25-2010
20100054147BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus for communicating to a mobile station over a downlink shared channel includes a reception unit configured to receive downlink radio quality information from the mobile station over a control channel frequency-multiplexed with an uplink shared channel, a measurement unit configured to measure a radio quality of the control channel, and a determination unit configured to determine reliability of the downlink radio quality information based on the radio quality. Also, a communication control method at a base station apparatus for communicating to a mobile station over a downlink shared channel includes receiving downlink radio quality information from the mobile station over a control channel frequency-multiplexed with an uplink shared channel, measuring a radio quality of the control channel, and determining based on the radio quality whether the mobile station has transmitted the downlink radio quality information.03-04-2010
20100061302BASE STATION APPARATUS AND COMMUNICATIONS CONTROL METHOD - An out-of-synchronization determining section that determines uplink out of synchronization with the mobile station in accordance with a reception timing of the uplink signal is provided in a base station apparatus for carrying out communications with a mobile station, wherein the mobile station transmits an uplink signal by Single-Carrier Frequency Division Multiple Access or Orthogonal Frequency Division Multiple Access.03-11-2010
20100062799MOBILE COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, AND COMMUNICATION CONTROL METHOD - A mobile communication system including a base station and a mobile station for communicating with the base station includes a control unit configured to perform uplink transmission power control based on a type of a frequency-adjacent system.03-11-2010
20100074128BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus for communicating to a mobile station over an uplink shared channel includes a transmit instruction unit configured to assign an uplink shared channel to the mobile station and instruct the mobile station to conduct transmissions over the assigned uplink shared channel; a measurement unit configured to measure a radio quality of the assigned uplink shared channel; and a determination unit configured to determine based on the radio quality whether the mobile station has transmitted data over the assigned uplink shared channel. In addition, a communication control method at a base station apparatus for communicating to a mobile station over an uplink shared channel includes assigning an uplink shared channel to the mobile station and instructing the mobile station to conduct transmissions over the assigned uplink shared channel; measuring a radio quality of the uplink shared channel assigned to the mobile station; and determining based on the radio quality whether the mobile station has transmitted data over the assigned uplink shared channel.03-25-2010
20100074230MOBILE STATION, BASE STATION, RADIO COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD - A mobile station is configured to send a base station a buffer status report explicitly indicating that the amount of a transmission signal in a buffer of the mobile station has become zero. This configuration makes it possible to efficiently allocate radio resources of an uplink shared channel and thereby to increase uplink capacity.03-25-2010
20100074246TRANSMISSION RESTARTING METHOD, MOBILE STATION AND RADIO BASE STATION - A mobile station (UE) is configured to notify, to a radio base station (eNB), a preamble for RACH included in an uplink synchronization request transmitted by the radio base station by using an asynchronous RACH; notify, to the radio base station (eNB), the preamble, when failing to receive a TA command transmitted by the radio base station (eNB); and release the preamble, when a validity period of the preamble is passed.03-25-2010
20100080135BASE STATION APPARATUS, MOBILE STATION, MOBILE COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD - A base station for communicating with a mobile station which transmits an uplink signal according to a frequency division multiplexing scheme includes a first measurement unit configured to measure reception power on a frequency band for the random access channel in uplink or a second measurement unit configured to measure the number of receptions of preambles on the random access channel. The base station may either control the frequency band for the random access channel or restrict transmission on the random access channel based on at least one of the reception power on the frequency band for the random access channel and the number of receptions of preambles on the random access channel.04-01-2010
20100086070USER APPARATUS, BASE STATION APPARATUS, MOBILE COMMUNICATION SYSTEM AND COMMUNICATION CONTROL METHOD - A user apparatus that communicates with a base station apparatus in a mobile communication system includes: a plurality of antennas; a selection unit configured to select an antenna according to a frequency; and a reception unit configured to receive a signal using the antenna selected by the selection unit. The selection unit selects all of the plurality of antennas when the frequency is greater than a predetermined threshold (1 GHz, for example), and the selection unit selects one of the plurality of antennas when the frequency is not greater than a predetermined threshold.04-08-2010
20100087200BASE STATION APPARATUS AND COMMUNICATIONS CONTROL METHOD - The base station apparatus calculates the number of the mobile stations associated with a consumption amount of radio resources, and carries out call admission control in accordance with the number of the mobile station. The base station apparatus includes a calculation section that calculates the number of the mobile stations having data to be transmitted in a transmission buffer, and a call admission section that carries out new call admission in accordance with the number of the mobile stations.04-08-2010
20100091672BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus for communicating a mobile station over a downlink shared channel includes a reception unit configured to receive acknowledgement information for the downlink shared channel from the mobile station over a control channel frequency-multiplexed with an uplink shared channel, a measurement unit configured to measure a radio quality of the control channel, and a determination unit configured to determine based on the radio quality whether the mobile station has transmitted the acknowledgement information. Also, a communication control method at a base station apparatus for communicating a mobile station over a downlink shared channel includes receiving acknowledgement information for the downlink shared channel from the mobile station over a control channel frequency-multiplexed with an uplink shared channel, measuring a radio quality of the control channel, and determining based on the radio quality whether the mobile station has transmitted the acknowledgement information.04-15-2010
20100091708BASE STATION APPARATUS, MOBILE STATION, RADIO COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD - In a radio communication system including a mobile station and a base station apparatus for communicating with the mobile station according to a SC-FDMA scheme in uplink, the mobile station includes a transmitting unit configured to transmit at least one of a first signal and a second signal; and a Sounding RS transmitting unit configured to determine a transmission band for a Sounding Reference Signal (Sounding RS) based on mapping information of at least one of the first signal and the second signal.04-15-2010
20100091724BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus is disclosed that includes a selection unit selecting user equipment terminals to which radio resources are allocated based on priority levels indicating a priority order of allocating the radio resources for a shared channel and a resource determination unit determining a transmission power level of a control channel and resources for the control channel, the control channel indicating communications of the shared channel to the selected user equipment terminals. In the base station apparatus, when the sum of the transmission power of the control channel related to the selected user equipment terminals exceeds a predetermined first threshold value or when a sum of control resources for the control channel related to the selected user equipment terminals exceeds a predetermined second threshold value, the resource determination unit transmits the control channel to some user equipment terminals among the selected user equipment terminals.04-15-2010
20100091725BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with user equipment terminals using an uplink shared channel includes a selection unit configured to select a user equipment terminal to which the base station apparatus allocates the shared channel among the user equipment terminals other than a user equipment terminal where a time frame in which a control channel for the shared channel is transmitted in downlink, a time frame in which the shared channel is received, or a time frame in which acknowledgement information for the shared channel is transmitted overlaps a time interval for measuring a cell with a different frequency; and an allocation unit configured to allocate the shared channel to the user equipment terminal selected by the selection unit.04-15-2010
20100091726BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with user equipment terminals using an uplink shared channel includes a user selection unit configured to select a user equipment terminal to which the base station apparatus allocates a radio resource based on whether the base station apparatus receives a signal for requesting allocation of the uplink shared channel from the user equipment terminal.04-15-2010
20100091727BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with user equipment terminals using an uplink shared channel includes a radio resource allocation unit configured to allocate radio resources to the shared channel after allocating radio resources to a random access channel, a control channel, and a Message-3 in a random access procedure.04-15-2010
20100098008BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with a user equipment terminal using an uplink shared channel, includes a resource allocation unit configured to allocate radio resources according to a first resource allocating scheme for dynamically allocating radio resources and a second resource allocating scheme for periodically allocating radio resources, wherein the resource allocation unit uses the radio resources to be allocated according to the second resource allocating scheme as the radio resources to be allocated according to the first resource allocating scheme, when the base station apparatus receives a signal to release the radio resources to be allocated according to the second allocating scheme.04-22-2010
20100099429BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with a user equipment terminal using an uplink shared channel includes a radio resource allocation unit configured to decrease frequency resources allocated to the shared channel, when transmission power of the user equipment terminal is less than a predetermined threshold.04-22-2010
20100103890BASE STATION APPARATUS, USER APPARATUS, AND METHOD USED IN MOBILE COMMUNICATIONS SYSTEM - A base station apparatus in a mobile communications system which uses orthogonal frequency division multiplexing (OFDM) for downlink is disclosed. The base station includes a unit which generates a first signal; a unit which generates a second signal; a unit which multiplexes the first signal and the second signal to map the multiplexed signals to a sub-carrier to generate a transmit symbol; and a mapping determining unit which determines a position of mapping the second signal to the sub-carrier, wherein the mapping determining unit determines the mapping position based on a cell ID or cell group ID, and a mapping pattern defined with a sequence having two-stage structure.04-29-2010
20100103891USER APPARATUS, BASE STATION APPARATUS, AND METHOD IN MOBILE COMMUNICATION SYSTEM - A user apparatus transmits an uplink control signal to a base station apparatus using a single carrier scheme. The user apparatus includes: a unit configured to prepare acknowledgement information indicating positive acknowledgement or negative acknowledgement for a downlink data signal based on a result of demodulation of the downlink data signal; a unit configured to prepare channel state information indicating reception quality of a downlink reference signal; a unit configured to channel-code multiplexed control information in which the acknowledgement information and the channel state information are multiplexed to prepare the uplink control signal; and a unit configured to transmit the uplink control signal using dedicated resources different from resources for an uplink data signal.04-29-2010
20100105390BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A disclosed base station apparatus is capable of communicating with a user equipment terminal using a downlink shared channel. The base station apparatus includes a selection unit selecting a user equipment terminal transmitting a shared channel from among user equipment terminals other than a user equipment terminal in which a time frame to transmit the shared channel or a time frame to receive acknowledgement information with respect to the shared channel overlaps with a time interval when cells are measured, the cells operating at a different frequency, a user equipment terminal in sleep mode of discontinuous reception mode, a user equipment terminal that has not received radio quality information, and a user equipment terminal having no data to be transmitted and a transmission unit transmitting the shared channel to the user equipment terminal selected by the selection unit.04-29-2010
20100111008BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with a user equipment terminal using an uplink shared channel includes a calculation unit configured to calculate path loss between the user equipment terminal and the base station apparatus; an MCS selection unit configured to select an MCS level of the shared channel based on the path loss; a first offset calculation unit configured to calculate a transmission power offset for the shared channel based on both a decoding result of the uplink shared channel and a required uplink quality; a notification unit configured to notify the user equipment terminal of a difference between the transmission power offset for the shared channel and a transmission power offset retained by the user equipment terminal; and a reception unit configured to receive the shared channel from the user equipment terminal.05-06-2010
20100113080BASE STATION APPARATUS AND COMMUNICATIONS CONTROL METHOD - A base station apparatus for carrying out communications with a mobile station in downlink using an OFDM method is disclosed. The base station apparatus is characterized in that the base station apparatus transmits a first signal and a second signal; a predetermined transmission power of the second signal is set; and the base station apparatus comprises a first transmission power controlling section that controls so that a transmission power per unit frequency band of the first signal is constant; and a frequency resource assignment section that determines a frequency resource to be assigned to the first signal, in accordance with the transmission power of the second signal and the transmission power per unit frequency band of the first signal.05-06-2010
20100113082BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A disclosed base station apparatus includes05-06-2010
20100118719BASE STATION APPARATUS, USER EQUIPMENT, AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with a user equipment terminal using a downlink shared channel is disclosed. The base station apparatus includes a radio resource allocation unit allocating radio resource blocks to the shared channel after allocating the radio resource blocks to at least one of a synchronization signal, a common control channel, a broadcast channel, a paging channel, an MBMS channel, and a random access response channel.05-13-2010
20100118803BASE STATION APPARATUS, MOBILE STATION, RADIO COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD - In a radio communication system including a mobile station and a base station apparatus communicating with the mobile station, the base station apparatus applies a scheduling scheme for assigning radio resources to mobile stations for each constant period, and the mobile station transmits a first signal to the base station apparatus in accordance with the assignment of the radio resources. The base station apparatus includes a decoding unit configured to decode the first signal, and a transmitting unit configured to transmit a control signal for retransmitting the first signal to the mobile station if the first signal has not been successfully received.05-13-2010
20100118805MOBILE COMMUNICATIONS SYSTEM, BASE STATION APPARATUS, USER APPARATUS, AND METHOD - A user apparatus which wirelessly communicates with a base station apparatus within a mobile communications system is disclosed. The user apparatus includes a receive unit which receives control information in downlink; and a transmit unit which transmits a first channel in uplink, wherein the transmit unit, based on the control information, makes a value of a maximum transmit power of the first channel smaller than that of a nominal power specified for the mobile communications system.05-13-2010
20100120370USER APPARATUS, BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD IN MOBILE COMMUNICATION SYSTEM - When a mobile station to which receive diversity is applied performs measurement of best cell, the method for considering the plurality of antennas in the receive diversity is changed for each cell. The base station determines the method for considering the plurality of antennas for the receive diversity, and reports it to the mobile station as broadcast information or measurement control information.05-13-2010
20100135208USER EQUIPMENT TERMINAL, BASE STATION APPARATUS, AND COMMUNICATION CONTROL METHOD IN MOBILE COMMUNICATION SYSTEM - A user equipment terminal capable of communicating with a base station apparatus in a mobile communication system includes a transmitting unit configured to transmit to the base station apparatus a first signal concerning a capability of the user equipment terminal; a receiving unit configured to receive from the base station apparatus a second signal concerning the capability of the user equipment terminal; and a communication processing unit configured to perform communication processing based on the capability of the user equipment terminal specified in the second signal. A base station apparatus capable of communicating with a user equipment terminal in a mobile communication system includes a receiving unit configured to receive from the user equipment terminal the first signal concerning the capability of the user equipment terminal; a transmitting unit configured to transmit to the user equipment terminal the second signal concerning the capability of the user equipment terminal; and a communication processing unit configured to perform communication processing based on the capability of the user equipment terminal specified in the second signal.06-03-2010
20100144364RETRANSMISSION CONTROL METHOD AND TRANSMITTING-SIDE APPARATUS - In a retransmission control method, each of a transmitting-side apparatus and a receiving-side apparatus includes a first layer and a second layer; and first retransmission control processing is performed between the first layer of the transmitting-side apparatus and the first layer of the receiving-side apparatus, and second retransmission control processing is performed between the second layer of the transmitting-side apparatus and the second layer of the receiving-side apparatus; the first layer of the transmitting-side apparatus determines whether or not specific user data is under the second retransmission control processing, when receiving a retransmission request for the specific user data from the first layer of the receiving-side apparatus, during the first retransmission control processing; and the first layer of the transmitting-side apparatus does not retransmit the specific user data, when determining that the specific user data is under the second retransmission control processing.06-10-2010
20100150085BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with user equipment terminals using an uplink shared channel includes a radio resource allocation unit configured to allocate radio resources other than a resource placed at an end of a system bandwidth, when the system bandwidth is frequency-adjacent to a heterogeneous radio communication system.06-17-2010
20100153803RETRANSMISSION CONTROL METHOD AND RECEIVING SIDE APPARATUS - A retransmission control method has a physical control channel transmission step wherein a transmission side apparatus (06-17-2010
20100177649BASE STATION APPARATUS, USER EQUIPMENT, AND METHOD USED IN MOBILE COMMUNICATION SYSTEM - A base station apparatus communicating with a user equipment terminal in a mobile communication system is disclosed. The base station apparatus includes a determination unit determining whether an uplink signal received from the user equipment terminal is to be retransmitted, a control information generation unit generating control information to permit the user equipment terminal to transmit an uplink signal, and a transmission unit transmitting the control information to the user equipment terminal. Further, in the base station apparatus, when the determination unit determines that the uplink signal is to be retransmitted, the control information generation unit generates the control information so as to include retransmission information indicating that an uplink signal transmitted before from the user equipment terminal is to be retransmitted.07-15-2010
20100220652BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus to be used for a mobile communication system capable of providing communications using plural frequency carriers is disclosed. The base station apparatus includes a frequency carrier selection unit selecting one of a first frequency carrier and a second frequency carrier as a frequency carrier to be used for the communications based on at least one of a service type of the communications and a congestion degree of the communications, the first frequency carrier being used for communications based on allocation in which radio resources are dynamically allocated, the second frequency carrier being used for communications based on allocation in which the radio resources are allocated at every predetermined period.09-02-2010
20100273484MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, USER EQUIPMENT AND METHOD - A base station apparatus includes a determination unit configured to determine whether to cause a user equipment residing in a cell of the base station apparatus to conduct different frequency measurement and a transmitting unit configured to transmit a control signal to the user equipment. The user equipment includes a reception unit configured to receive the control signal from the base station apparatus of a camped cell and a cell search and quality measurement unit configured to conduct cell search at a frequency indicated by the base station apparatus and cell quality measurement. If a candidate handover target cell of the user equipment is a predefined cell, the control signal allows the user equipment to conduct the different frequency measurement in a gap period defined in a mobile communication system. If the candidate handover target cell of the user equipment is another predefined cell different from the predefined cell, the control signal allows the user equipment to conduct the different frequency measurement in the gap period defined in the mobile communication system and between discontinuous signal receptions in a discontinuous reception operating mode.10-28-2010
20100296449MOBILE STATION, RADIO BASE STATION, COMMUNICATION CONTROL METHOD, AND MOBILE COMMUNICATION SYSTEM - A mobile station according to the present invention includes: a packet discarder unit (102, 103) configured to discard a packet in an uplink transmission buffer, after assigning a sequence number to the packet, when a predetermined condition is met.11-25-2010
20110009067MOBILE STATION - A mobile station (UE) according to the present invention is configured to repeatedly transmit a first measurement report including a radio quality of a first cell and to repeatedly transmit a second measurement report including a radio quality of a second cell at the same timings, when the mobile station starts transmitting the first measurement report and thereafter starts transmitting the second measurement report.01-13-2011
20110013506BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus capable of communicating with a user equipment terminal using a downlink shared channel is disclosed. The base station apparatus includes a user selection unit selecting a user equipment terminal to which radio resources are to be allocated, the selection being based on whether there is a MAC-layer control signal to be transmitted to the user equipment terminal.01-20-2011
20110038264BASE STATION AND COMMUNICATION CONTROL METHOD - A base station communicating with user equipments using shared channels. The base station includes a congestion level estimation unit estimating a congestion level of a cell; a priority-level/desired-value changing unit changing priority levels or desired minimum transmission rates of data to be transmitted by the user equipments or the base station based on the congestion level of the cell; and a selection unit selecting one or more of the user equipments to which radio resources are to be allocated based on the changed priority levels or the changed desired minimum transmission rates of the data.02-17-2011
20110044196USER EQUIPMENT TERMINAL AND COMMUNICATION CONTROL METHOD - A user equipment terminal for communicating with a base station apparatus using HARQ for uplink includes a transmission unit configured to transmit an uplink signal to the base station apparatus; a reception unit configured to receive a control signal indicating whether the uplink signal is to be retransmitted; and a decoding unit configured to consider the control signal as ACK when signal reliability of the control signal is low, and determine whether the control signal indicates ACK or NACK based on information in the control signal when the signal reliability of the control signal is high.02-24-2011
20110044275BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - A base station apparatus communicates to a user apparatus in an uplink shared channel and controls transmit power for a PHICH (Physical HARQ Indicator Channel) on the shared channel. The transmit power for the PHICH is controlled based on downlink radio quality information (CQI) reported from the user apparatus, information (ACK/NACK) mapped into the PHICH and the presence of transmission of an uplink scheduling grant for indicating transmission of the shared channel.02-24-2011
20110053625MOBILE STATION AND BASE STATION APPARATUS - A mobile station (03-03-2011
20110103336MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION - In a mobile communication method according to the present invention, a mobile station (UE) receives downlink data transmitted from a radio base station by using a downlink radio resource assigned to the mobile station by predetermined scheduling information, in a predetermined cycle. The method includes the steps: (A) notifying, to the mobile station (UE), the predetermined cycle and information on the downlink radio resource; (B) notifying, to the mobile station (UE), the predetermined scheduling information; and (C) transmitting downlink data in the predetermined cycle by using the downlink radio resource assigned by the predetermined scheduling information, the transmission starting at a certain point determined on the basis of the received predetermined scheduling information. In the step (C), the predetermined scheduling information is discarded, when the information on the downlink radio resource and information notified by the predetermined scheduling information are inconsistent with each other.05-05-2011
20110103367USER APPARATUS, BASE STATION APPARATUS, AND TRANSMISSION CONTROL METHOD - The present invention is realized by a user apparatus in communication with a base station apparatus, the user apparatus is provided with a determining unit which determines a downlink synchronization status based on downlink quality information measured based on a downlink signal transmitted from the base station apparatus.05-05-2011
20110116463MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION - In a mobile communication method according to the present invention, a mobile station (UE) transmits uplink data to a radio base station by using an uplink radio resource assigned to the mobile station by predetermined scheduling information, in a predetermined cycle. The method includes the steps: (A) notifying, to the mobile station (UE), the predetermined cycle and information on the uplink radio resource; (B) notifying, to the mobile station (UE), the predetermined scheduling information; and (C) transmitting uplink data in the predetermined cycle by using the uplink radio resource assigned by the predetermined scheduling information, the transmission starting at a certain point determined on the basis of the received predetermined scheduling information. In the step (C), the predetermined scheduling information is discarded, when the information on the uplink radio resource and information notified by the predetermined scheduling information are inconsistent with each other.05-19-2011
20110116464BASE STATION APPARATUS AND METHOD IN MOBILE COMMUNICATION SYSTEM - A base station apparatus includes a scheduler configured to schedule assignment of radio resources based on a scheduling coefficient for one or more user equipments, a control signal generation unit configured to generate a control signal including reporting indication information for indicating whether the user equipment is to report downlink channel state information and scheduling grant information for indicating the scheduled assignment of the radio resources and a transmitting unit configured to transmit the control signal in a downlink. A cumulative value is calculated for each of the user equipments. The reporting indication information transmitted to a user equipment, whose cumulative value reaches a predefined value, indicates that the user equipment is to report the downlink channel state information. The cumulative value is updated if the scheduling coefficient satisfies a predefined condition.05-19-2011
20110117947RADIO BASE STATION AND COMMUNICATION CONTROL METHOD - A radio base station includes: a measurement unit which measures a resource use amount in each time frame within predetermined period; a downlink persistent allocation signal transmission unit which transmits to a mobile station, a persistent allocation signal indicating a downlink radio resource allocation start moment; and a downlink communication unit which transmit downlink data using downlink radio resource starting at the downlink radio resource allocation start moment. The downlink persistent allocation signal transmission unit decides the downlink radio resource allocation start moment in accordance with a resource use amount in each time frame.05-19-2011
20110117948RADIO BASE STATION AND COMMUNICATION CONTROL METHOD - A radio base station includes: a measurement unit which measures a resource use amount in each time frame within predetermined period; a downlink persistent allocation signal transmission unit which transmits to a mobile station, a persistent allocation signal indicating a radio resource allocation start moment; and a uplink communication unit which receive uplink data using uplink radio resource starting at the radio resource allocation start moment. The downlink persistent allocation signal transmission unit decides the radio resource allocation start moment in accordance with a resource use amount in each time frame.05-19-2011
20110128931MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION - A radio resource selecting method according to the present invention semi-persistently selects a radio resource to be allocated to an uplink acknowledgement signal indicating a reception state of a persistently allocated downlink signal from a plurality of radio resources defined by frequencies and codes, and includes the steps of: (A) selecting candidates for an allocation radio resource to be allocated to the uplink acknowledgement signal from the plurality of radio resources; (B) notifying candidate information on the selected candidates for the allocation radio resource; and (C) selecting a single allocation radio resource from the plurality of candidates for the allocation radio resource indicated in the candidate information notified in the step (B).06-02-2011
20110128941BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND COMMUNICATIONS CONTROL METHOD - A base station apparatus in a radio communications system is disclosed. The radio communications system has a mobile station apparatus and the base station apparatus in communication with the mobile station apparatus to which is applied a scheduling scheme which allocates a radio resource for each of constant periods.06-02-2011
20110149771MOBILE STATION AND RADIO BASE STATION - A mobile station (UE) according to the present invention includes: a CP length determiner unit (06-23-2011
20110151876USER EQUIPMENT, BASE STATION DEVICE, AND MOBILE COMMUNICATION METHOD - User equipment 06-23-2011
20110164579RADIO RESOURCE SELECTING METHOD, MOBILE STATION AND RADIO BASE STATION - A mobile communication method according to the present invention includes the steps of; (A) notifying, from a radio base station (eNB) to a mobile station (UE), a first cycle and information on the uplink radio resource; and (B) determining, at the mobile station (UE), a first allocation starting time, receiving a downlink data via a downlink radio resource and transmitting an acknowledgement information via an uplink radio resource at and after the first allocation starting time, when receiving a fixed allocation signal from the radio base station (UE). In the step (B), the uplink radio resource is adjusted by an adjustment signal included in the fixed allocation signal and the acknowledgement information is transmitted via the adjusted uplink radio resource.07-07-2011

Patent applications by Hiroyuki Ishii, Kanagawa JP