| Patent application number | Description | Published |
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| 20080318527 | Transmission and Reception Bandwidth Setting Method, Mobile Terminal, and Base Station in Radio Communication System Defining a Plurality of Signal Bandwidths - In a radio communication system defining a plurality of bandwidths, mobile terminals of kinds respectively corresponding to the plurality of bandwidths are accommodated in the system, and a minimum transmission bandwidth of the plurality of bandwidths is set as a transmission bandwidth of a downlink common channel. Or, every mobile terminal accommodated in the radio communication system is provided with a capability for processing a bandwidth equal to or greater than a predetermined value, and equal to or more than two transmission bandwidths that are equal to or less than a predetermined value are set as a transmission bandwidth of a downlink common channel. In the latter case, the mobile terminal identifies a bandwidth of a received downlink common channel. | 12-25-2008 |
| 20090103483 | RADIO RESOURCE ASSIGNMENT METHOD FOR PHYSICAL CHANNEL IN UPLINK, AND TRANSMITTER FOR MOBILE APPARATUSES - A radio resource assignment method for a physical channel in an uplink directed from a mobile apparatus to a base station in a radio communication system, includes: assigning a contention-based channel and a scheduled channel according to one of a time division scheme, a frequency division scheme, and a hybrid scheme of the time division scheme and the frequency division scheme. In addition, radio resources are properly assigned to each of the contention-based channel, a common control channel of the scheduled channel, and a shared data channel of the scheduled channel. | 04-23-2009 |
| 20090147748 | TRANSMISSION APPARATUS, RECEPTION APPARATUS, MOBILE COMMUNICATIONS SYSTEM AND TRANSMISSION CONTROL METHOD - A disclosed transmission apparatus comprises a switching portion that switches radio access methods; a frequency domain signal generation portion that allocates a radio resource to a spread chip sequence on which one of a fast Fourier transformation and a series/parallel conversion is performed in accordance with the switched radio accessed method, so as to generate a signal in a frequency domain; and a transmission signal generation portion that performs a fast inverse Fourier transformation on the signal in the frequency domain so as to generate a transmission signal. | 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 |
| 20090161772 | Downlink channel transmission device and method thereof - A transmission device able to improve signal quality in a downlink channel is disclosed. The transmission device is for transmitting a control channel, a pilot channel, and a data channel, and includes a unit for transmitting the data channel by using a multi-beam or a variable directional beam, and a unit for transmitting a known signal as the pilot channel by using the multi-beam or the variable directional beam. The multi-beam includes plural fixed directional beams having respective fixed directions different from each other, and the variable directional beam is of a direction changing along with a position of a mobile terminal. | 06-25-2009 |
| 20090175369 | MOBILE STATION AND A BASE STATION - A mobile station includes a control unit configured to change at least one parameter for a retransmission packet from that of a transmission packet, where the at least one parameter is selected from a data modulation scheme; a channel coding rate; a puncturing pattern; a spreading factor; a frequency bandwidth; a frequency allocation position; and transmission power. A base station includes a retransmission format determining unit configured to determine a pattern used for changing at least one parameter for a retransmission packet from that of a transmission packet to determine a format for the retransmission packet, where the at least one parameter is selected from a data modulation scheme; a channel coding rate; a puncturing pattern; a spreading factor; a frequency bandwidth; a frequency allocation position; and transmission power; and a control signal generating unit configured to generate a control signal based on the format for the retransmission packet determined by the retransmission format determining unit. | 07-09-2009 |
| 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 |
| 20090185602 | TRANSMITTER, RECEIVER, AND MOBILE COMMUNICATION SYSTEM - A transmitter includes: spread code multiplying means that multiplies a symbol indicating a reference signal by spread code to generate a chip sequence after spreading; chip pattern generation means that generates a chip pattern by performing chip repetition a predetermined repetition number of times on the chip sequence after spreading; and multiplying means that multiplies a signal having the chip pattern by a phase specific to the transmitter. | 07-23-2009 |
| 20090201849 | Transmission apparatus, transmission method, reception apparatus and reception method - A transmission apparatus which attempts improvement of signal quality in an uplink and a downlink carries out radio transmission of different signals simultaneously from respective ones of a plurality of antennas. The apparatus has pilot multiplexing means for multiplexing a pilot channel to transmit from each antenna in one or more of a time division multiplexing method, a frequency division multiplexing method and a code division multiplexing method, data multiplexing means for time-multiplexing a pilot channel and a data channel, and means for transmitting a signal in a least one of a space division multiplexing (SDM) method and a space time transmission diversity (STTD) method. | 08-13-2009 |
| 20090201902 | UPLINK CHANNEL RECEIVING AND TRANSMITTING APPARATUSES AND METHODS - A receiving apparatus receives control, pilot and data channels in an uplink. The apparatus includes a data-channel receiving unit for receiving the pilot channel in an antenna gain pattern of a multi-beam having multiple fixed directional beams with respectively different fixed directional directions or of a variable directional beam having a directional direction varying in accordance with the position of a mobile terminal; and a data-channel receiving unit for receiving the data channel in an antenna gain pattern of a multi-beam or a variable directional beam. | 08-13-2009 |
| 20090217118 | BASE STATION - A base station includes a control unit configured to avoid contention between a radio resource allocated to a transmission packet or a retransmission packet by a channel-condition-based scheduling unit and a radio resource allocated to a transmission packet or a retransmission packet by a persistent scheduling unit. | 08-27-2009 |
| 20090217120 | RADIO COMMUNICATIONS APPARATUS AND RADIO COMMUNICATIONS METHOD - A disclosed radio communications apparatus performs at least an automatic repeat request control and performs radio communications using a frame that occupies predetermined plural frequency bands. This apparatus includes a reception portion that receives feedback information about each of a plurality of frequency bands from a communications party, a determination portion that determines which frequency band among the plural frequency bands is to be used to retransmit a retransmission packet indicated by the feedback information, and a transmission portion that transmits the retransmission packet using. one or more determined frequency bands. | 08-27-2009 |
| 20090247180 | APPARATUS AND METHOD FOR DECIDING UPLINK TRANSMISSION PARAMETERS - An apparatus for determining uplink transmission parameters includes a reception unit receiving a channel quality indicator from a mobile station; a storage unit storing relationships among a channel quality indicator, a modulation scheme and a channel coding rate for an uplink, and one or both of transmission power and transmission bandwidth for a mobile station; a determination unit determining a set of transmission parameters based on the relationship; and a transmission unit transmitting the set of transmission parameters to the mobile station. | 10-01-2009 |
| 20100048236 | BASE STATION, MOBILE STATION, AND POWER CONTROL METHOD - A base station includes: means that derives a transmission power of a mobile station based on receive quality of an uplink pilot channel; means that reports the derived transmission power to the mobile station; and means that receives a control channel transmitted by the mobile station according to the reported information. Accordingly, irrespective of transmission power history over a past continuous time, the mobile station receives an instruction on the transmission power from the base station each time when transmitting a packet so as to be able to adjust the transmission power. | 02-25-2010 |
| 20100112951 | Transmission and Reception Bandwidth Setting Method, Mobile Terminal, and Base Station in Radio Communication System Defining a Plurality of Signal Bandwidths - In a radio communication system defining a plurality of bandwidths, mobile terminals of kinds respectively corresponding to the plurality of bandwidths are accommodated in the system, and a minimum transmission bandwidth of the plurality of bandwidths is set as a transmission bandwidth of a downlink common channel. Or, every mobile terminal accommodated in the radio communication system is provided with a capability for processing a bandwidth equal to or greater than a predetermined value, and equal to or more than two transmission bandwidths that are equal to or less than a predetermined value are set as a transmission bandwidth of a downlink common channel. In the latter case, the mobile terminal identifies a bandwidth of a received downlink common channel. | 05-06-2010 |
| 20100165873 | UPLINK AND DOWNLINK CHANNEL CONFIGURATION METHOD IN RADIO COMMUNICATION SYSTEM - A disclosed downlink channel configuration method in a radio communication system includes a step of including a broadcast channel, a paging channel, and a downlink shared channel as transport channels; a step of including as a physical channel a physical downlink shared channel to which the downlink shared channel of the transport channel is mapped; and a step of sharing the downlink shared channel by plural users without using a dedicated channel separately allocated to each of the users. In a preferred embodiment, as the physical channels, there are further included a physical broadcast channel as an independent radio resource to which the broadcast channel of the transport channel is mapped and a physical paging channel as an independent radio resource to which the paging channel of the transport channel is mapped. | 07-01-2010 |
| 20100220663 | COMMUNICATIONS SYSTEM AND METHOD - A disclosed radio communications apparatus adaptively controls a modulation method and coding rate (MCS) of a data channel in accordance with received channel quality information (CQI). This apparatus includes a first data table indicating a first corresponding relationship of the MCS with respect to the CQI; a second data table indicating a second corresponding relationship of transmission power of a control channel with respect to the CQI; a first selection portion that accesses the first data table so as to select the MCS of the data channel in accordance with the received CQI; a second selection portion that accesses the second data table so as to select the transmission power of the control channel in accordance with the received CQI; and a transmission portion that transmits the data channel in accordance with the selected MCS and the control channel at the selected transmission power. | 09-02-2010 |
