| Patent application number | Description | Published |
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| 20090129322 | MOBILE COMMUNICATION SYSTEM, A MOBILE STATION, A BASE STATION AND COMMUNICATION CONTROL METHOD - A mobile station includes: a QoS (quality of service) requirement determination unit configured to determine a QoS requirement for a data packet; a downlink channel condition estimation unit configured to estimate a downlink channel condition; an identification number extracting unit configured to extract an identification number for the mobile station; and a notification unit configured to notify a base station of the QoS requirement, the identification number for the mobile station, and the downlink channel condition by means of a reservation packet. A base station includes: an uplink channel condition estimation unit configured to estimate an uplink channel condition by means of a reservation packet; a radio parameter control unit configured to determine and control a radio parameter based on the reservation packet and the uplink channel condition. | 05-21-2009 |
| 20090149169 | RADIO COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION AND WIRELESS COMMUNICATION METHOD - In a radio communication system including a plurality of base stations and a plurality of mobile stations, a base station includes a reception timing difference report unit measuring a reception timing difference of reference signals transmitted from neighboring base stations, and reporting the reception timing difference to one or more base stations. A base station has a transmission timing difference computation unit computing a transmission timing difference of reference signals between the base station and neighboring base stations based on the reception timing difference, and a transmission timing difference information report unit reporting the transmission timing difference to the mobile station. The mobile station further includes a cell search unit performing cell search on a cell search range limited based on the transmission timing difference transmitted from the base station. | 06-11-2009 |
| 20090149187 | TRANSMITTING APPARATUS AND RADIO RESOURCE ASSIGNMENT METHOD - A transmission apparatus is provided with radio resource assignment means that assigns radio resources to each physical channel according to a type of the physical channel; and transmission means that transmits information to be transmitted by each physical channel using the assigned radio resources. | 06-11-2009 |
| 20090185541 | BASE STATION - A base station communicating with mobile stations by using a frequency band within a transmission band based on orthogonal frequency division multiplexing is disclosed. The base station includes a multiplexing unit configured to multiplex a synchronization channel, for a mobile station performing an initial cell search, in a second frequency band including a center frequency on a raster of a first frequency band and having a bandwidth corresponding to the smallest one of receivable bandwidths of the mobile stations in a system. The multiplexing unit is configured to multiplex multiple synchronization channels, for a mobile station performing a neighboring cell search, in a third frequency band including the center frequency on the raster of the first frequency band and having a bandwidth that is greater than that of the second frequency band. | 07-23-2009 |
| 20090185577 | TRANSMISSION APPARATUS AND TRANSMISSION METHOD - A transmitter transmits data to a communicating opponent with a better channel condition with use of one or more frequency blocks including one or more carrier frequencies. The transmitter includes a communicating opponent selection unit evaluating the channel condition for each frequency block for each of plural communicating opponents and selecting one or more communicating opponents from the plurality of communicating opponents, a modulation scheme determination unit determining at least a modulation scheme depending on the evaluated channel condition, a control channel generation unit generating a control channel indicative of the determined modulation scheme and one or more frequency blocks available for the selected communicating opponents to receive a data channel, and a channel transmission unit providing the selected communicating opponents with the control channel and the data channel modulated in accordance with the modulation scheme. | 07-23-2009 |
| 20090190539 | BASE STATION, MOBILE STATION, AND COMMUNICATION METHOD - A base station for transmitting a radio frame where an L1/L2 control channel is multiplexed into a portion of a subframe to transmit data on a shared data channel includes a broadcast channel generating unit configured to generate a broadcast channel; an L1/L2 control channel generating unit configured to generate the L1/L2 control channel corresponding to the broadcast channel, which includes at least one broadcast channel control information from the group consisting of: an update flag indicating whether information on the broadcast channel is modified, broadcast channel allocation information, and L3 control information for the broadcast channel; and a multiplexing unit configured to multiplex the broadcast channel, the shared data channel, and the L1/L2 control channel into the subframe. | 07-30-2009 |
| 20090207788 | BASE STATION, MOBILE STATION, MOBILE COMMUNICATION SYSTEM, AND METHOD OF CONTROLLING CONTROL SIGNAL TRANSMISSION - A disclosed base station includes a transmission-rate determining unit for determining a transmission rate of a control channel for transmitting an upper-layer control signal, and a transmitter for allocating a predetermined bandwidth to the control channel for transmitting the upper-layer control signal according to the determined transmission rate, and transmitting the signal. | 08-20-2009 |
| 20090213786 | MOBILE STATION, A BASE STATION, A MOBILE COMMUNICATION SYSTEM AND A COMMUNICATION CONTROL METHOD - There is disclosed a mobile station performing packet communications with a base station, including: a reservation control signal generating unit configured to generate a reservation control signal, based on control information transmitted in advance of a data packet; and a reservation control signal transmission control unit configured to transmit the reservation control signal at a predetermined timing. | 08-27-2009 |
| 20090215464 | Channel allocating method, wireless communication system, and channel structure of wireless sections - In a radio communication system, a user terminal transmits a reservation packet to a base station using a common control channel ( | 08-27-2009 |
| 20090219860 | BASE STATION AND COMMUNICATION METHOD - The present invention relates to a base station for generating and transmitting system information to a mobile station. The present invention also relates to a communication method of communicating system information in a communication system including the base station and the mobile station. The base station generates system information; categorizes the system information into multiple pieces of system information; multiplexes the categorized multiple pieces of system information into multiple channels or multiple blocks; and transmits the system information on the multiple channels or the multiple blocks. The mobile station receives system information included in a portion of the multiple channels or the multiple blocks. | 09-03-2009 |
| 20090238137 | BASE STATION AND METHOD OF GENERATING A SYNCHRONIZATION CHANNEL - A synchronization channel is generated by generating, as a P-SCH basic waveform, a signal sequence in which codes with constant amplitude in a frequency domain are placed at intervals of a predetermined number of subcarriers; transforming the signal sequence into a time domain; multiplying the signal sequence transformed into the time domain with a predetermined code sequence; retransforming the signal sequence multiplied with the predetermined code sequence into the frequency domain; generating an S-SCH signal sequence; and multiplexing the signal sequence retransformed into the frequency domain and the S-SCH signal sequence. | 09-24-2009 |
| 20090245229 | BASE STATION - A base station for transmitting a synchronization signal on a synchronization channel with a system bandwidth which is less than the maximum system bandwidth in a radio communication system supporting multiple system bandwidths includes a multiplexing unit configured to multiplex the synchronization channel and a channel other than the synchronization channel based on a characteristic of a reception filter used in a mobile station. The multiplexing unit may place the synchronization channel and the channel other than the synchronization channel on continuous subcarriers. Alternatively, the multiplexing unit may assign a guard band or a cyclic prefix to a transition band of the reception filter. | 10-01-2009 |
| 20090247168 | MOBILE STATION, BASE STATION, MOBILE COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A mobile station, a base station, a mobile communication system and a communication method enabling operations associated with simultaneous uplink reception in multiple stations to be simplified are provided. The base station includes a transmission timing determining unit determining a transmission timing based on scheduling conducted upon a data transmission request from a mobile station and notifying the mobile station of the transmission timing, and a receiving unit receiving data in accordance with the transmission timing. | 10-01-2009 |
| 20090323642 | TRANSMITTER, RECEIVER, MOBILE COMMUNICATION SYSTEM AND SYNCHRONIZATION CHANNEL - A transmitter includes an amplitude adjustment unit multiplying an amplitude adjustment sequence value for adjusting amplitude with a synchronization channel transmitted from a base station for establishing synchronization with a mobile station. | 12-31-2009 |
| 20100128805 | TRANSMITTER, RECEIVER AND COMMUNICATION METHOD - A transmission device includes: system information generation means for generating system information; multiplexing means for multiplexing system information required for cello search among the system information with a report channel and multiplexing system information other than the system information required for the cell search with a common data channel; and transmission means for transmitting the report channel and the common data channel. | 05-27-2010 |
| 20100157934 | BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - The object is achieved by providing a base station apparatus for performing time and frequency scheduling in uplink packet access with: an interference amount measurement part configured to measure an uplink interference amount for each interference amount measurement unit which comprises a predetermined period and a predetermined number of frequency blocks; an interference amount determination part configured to determine whether the uplink interference amount satisfies a predetermined condition; and an overload indicator reporting part configured to report an overload indicator to a neighboring cell when the predetermined condition is satisfied. | 06-24-2010 |
| 20100177697 | BASE STATION AND BROADCAST CHANNEL TRANSMISSION METHOD - A disclosed base station transmits a broadcast channel to a user device a predefined number of times in a predetermined cycle for communication with the user device. The base station includes a repetition unit configured to repeat the broadcast channel, after the broadcast channel is channel-coded, for the predefined number of times to generate multiple broadcast channels; and a signal waveform changing unit configured to process the generated broadcast channels such that the processed broadcast channels have different signal waveforms. Positions of the broadcast channels in the order of transmission in the predetermined cycle are associated with the signal waveforms of the broadcast channels. | 07-15-2010 |
| 20100182966 | BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND METHOD OF TRANSMITTING SYNCHRONIZATION CHANNELS - A base station apparatus in a radio communications system is disclosed. The base station apparatus communicates with a mobile station using an OFDM scheme in downlink. The base station apparatus includes a sync signal generating unit which generates a secondary sync channel; a multiplying unit which multiplies a scramble code with the secondary sync channel; and a transmitting unit which transmits the secondary sync channel with which the scramble code is multiplied. Cell-specific information is detected by the secondary sync channel. | 07-22-2010 |
| 20100254287 | MOBILE COMMUNICATIONS SYSTEM, BASE STATION APPARATUS, USER APPARATUS, AND METHOD - A user apparatus for use in a mobile communications system is disclosed. The user apparatus includes a unit which determines, using acknowledgement information received from a communications counterpart, whether retransmission is required for a transmitted signal; and a unit which transmits, to the communications counterpart, a signal required to be retransmitted according to a round-trip delay (RTD) which is set for the user apparatus for retransmission control, wherein, the RTD of the user apparatus is arranged to be changed, when the user apparatus enters a region which uses an RTD shorter than the RTD set for the user apparatus to an integer multiple of the shorter RTD. | 10-07-2010 |
| 20100291925 | USER EQUIPMENT AND VERIFICATION METHOD - A user equipment performing a cell search and detecting cell-specific information including a cell ID. The user equipment includes a receiving unit configured to receive a synchronization channel; a cell search unit configured to extract a primary synchronization channel and a secondary synchronization channel from the received synchronization channel to perform the cell search; and a verification unit configured to verify a detection result of the cell search based on a verification start condition. | 11-18-2010 |
| 20100302987 | MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, USER APPARATUS AND METHOD - In a mobile communication system, a downlink MBMS channel is transmitted from a plurality of cells in timing synchronized with each other. The system includes: a unit configured to collectively transit a notification of setting up an uplink line for responding to the downlink MBMS channel to a plurality of user apparatuses specified by an upper node of the base station apparatus; a unit configured to set up the uplink line for a user apparatus that responds to the notification; and a unit configured to transfer a signal received from each user apparatus via the uplink line to the upper node. | 12-02-2010 |
| 20110044159 | BASE STATION APPARATUS, MOBILE STATION APPARATUS AND SYNCHRONIZATION CHANNEL TRANSMISSION METHOD - A base station apparatus is disclosed for use in a mobile communication system including multiple cells having multiple sectors. The base station apparatus includes a synchronization channel generation unit configured to generate a synchronization channel for use in cell search by a user apparatus and a transmitting unit configured to wirelessly transmit a signal including the synchronization channel. The synchronization channel includes a primary synchronization channel and a secondary synchronization channel. The primary synchronization channel includes multiple types of sequences, and the secondary synchronization channel transmitted in a sector of a cell includes a code derived from a predefined generation polynomial equation corresponding to the primary synchronization channel. | 02-24-2011 |
| 20110051711 | MOBILE STATION, BASE STATION, BASIC FREQUENCY BLOCK SPECIFYING METHOD AND BAND CONTROL METHOD - A base station includes a receiving unit configured to receive a UE capability regarding a bandwidth from a mobile station; and a specifying unit configured to specify, among plural basic frequency blocks included in a system band, one or more basic frequency blocks to be used by the mobile station based on the UE capability. | 03-03-2011 |
| 20110075750 | BASE STATION APPARATUS, USER APPARATUS, AND METHOD USED IN MOBILE COMMUNICATION SYSTEM - A base station apparatus is used in a region in which a first system and a second system co-exist. In the first system, mobile communication is conducted using a variable system bandwidth not more than a basic bandwidth. In the second system, mobile communication is conducted using a variable system bandwidth which is not more than a bandwidth of an advanced system band which is at least as wide as multiple of the basic bandwidths. The base station apparatus generates a control signal for the first system and a control signal for the second system, orthogonally multiplexes them, and includes the same in a downlink signal to transmit the downlink signal. The advanced system band is divided such that it includes multiple of areas (P, Q, R, S) of the basic bandwidth. The control signal for the first system is included in one of the areas (Q). The control signal for the second system is included in at least one of the areas (P, Q, R, S). | 03-31-2011 |
| 20110103366 | BASE STATION, MOBILE STATION AND FREQUENCY DIVISION MULTIPLEXING COMMUNICATION METHOD - Provided is a base station comprising a multiplexer so constituted as to frequency-divide/multiplex a first channel for transmitting first data to be transmitted to a plurality of mobile stations, and a second channel for transmitting second data to be transmitted to one mobile station. | 05-05-2011 |
| 20110105138 | MOBILE COMMUNICATION SYSTEM AND RADIO RESOURCE ASSIGNMENT METHOD - In a mobile communication system including a first base station and a second base station, the first base station includes: a user information obtaining unit configured to obtain user information in the first base station, and the second base station includes: a user information obtaining unit configured to obtain user information in the second base station; a base station internal information collection unit configured to collect user information in the first and the second base stations; and a resource assignment determination unit configured to determine radio resources that can be used by the first base station and radio resources that can be used by the second base station based on the user information in the first and the second base stations. | 05-05-2011 |
| 20110110320 | BASE STATION, MOBILE STATION AND COMMON INFORMATION COMMUNICATING METHOD - A base station for transmitting both common information which is used in common by plural mobile stations and control information indicating that the common information is changed includes a common information generating unit configured to generate the control information and the common information; a lower-layer control information generating unit configured to generate first lower-layer control information indicating a radio resource where the control information is to be placed and second lower-layer control information indicating a radio resource where the common information is to be placed; a multiplexing unit configured to multiplex the first lower-layer control information and the control information into a plurality of frequency blocks included within a system bandwidth and multiplex the second lower-layer control information and the common information into one or more frequency blocks among the plurality of frequency blocks included within the system bandwidth, the system bandwidth being divided into the plurality of frequency blocks each corresponding to a minimum value of maximum transmission and reception bandwidths used by the plural mobile stations; and a transmitting unit configured to transmit the multiplexed first lower-layer control information, control information, second lower-layer control information, and common information. | 05-12-2011 |
| 20110110321 | BASE STATION, MOBILE STATION AND COMMON INFORMATION COMMUNICATING METHOD - A base station for transmitting common information which is used in common by plural mobile stations includes a common information generating unit configured to generate the common information; a lower-layer control information generating unit configured to generate lower-layer control information indicating a radio resource where the common information is to be placed; a multiplexing unit configured to multiplex the lower-layer control information and the common information into one or more frequency blocks among a plurality of frequency blocks included within a system bandwidth, the system bandwidth being divided into the plurality of frequency blocks each corresponding to a minimum value of maximum transmission and reception bandwidths used by the plural mobile stations; and a transmitting unit configured to transmit the multiplexed lower-layer control information and common information. | 05-12-2011 |
| 20110116465 | BASE STATION APPARATUS, USER EQUIPMENT AND METHOD IN MOBILE COMMUNICATION SYSTEM - A downlink control channel transmitted from a base station apparatus includes multiple control channel elements (CCEs), and different PUCCH resources are determined depending on which CCEs are associated with control information destined for user equipments. If a PDSCH in a certain subframe is assigned to a user equipment in an old system, the control information destined for the user equipment is assigned to a certain CCE, and a PDSCH in a subframe after a predefined time period from the certain subframe is assigned to a user equipment in a new system, the control information destined for the user equipment may be associated with a CCE different from the certain CCE. Alternatively, the control information destined for the user equipment in the second system may be associated with the same CCE as the control information destined for the user equipment in the first system but may be spread with different spread codes. | 05-19-2011 |
