Patent application number | Description | Published |
20090161786 | DIGITAL RADIO COMMUNICATIONS METHOD USING MULTI-LEVEL MODULATION SCHEME AND TRANSMITTER AND RECEIVER - A transmitter for use in digital radio communications systems includes: a bit corrector controls bit arrangement in such a manner that a code having high significance, out of multiple codes obtained by coding, is allocated with high priority to a bit having a tendency that the likelihood enlarges at the time of symbol decision on a receiver; a multi-level modulator allocates the code to the multiple bits in accordance with a predetermined symbol arrangement; and a symbol arrangement controller controls the symbol arrangement from equal distance arrangement to another arrangement in accordance with a ratio of the codes different in significance. To control symbol arrangement increases the effect of bit correction and improves an error rate on the receiver. | 06-25-2009 |
20090219877 | COMMUNICATION APPARATUS AND ALLOCATION DETERMINING METHOD - A communication apparatus for communicating via a frame containing a plurality of first type blocks into which pilot information is inserted and a plurality of second type blocks into which control information or data is inserted, the communication apparatus including a channel estimation accuracy predicting unit for predicting channel estimation accuracy of each of the plurality of second type blocks based on channel estimate values of the plurality of first type blocks in the frame. The communication apparatus includes an allocation determining unit for determining an allocation based on priority information containing a priority of each type of the control information and data such that control information or data of a higher-priority type is inserted into a block among the plurality of second type blocks with higher channel estimation accuracy. | 09-03-2009 |
20090238126 | Communication System, Mobile Station, And Communication Method - A communication system includes a mobile station and a base station. The mobile station calculates estimated TA information based on the position of the mobile station and an amount of propagation path delay. The mobile station determines, based on TA information transmitted from the base station and the estimated TA information, whether the TA information is addressed thereto. The mobile station determines whether to transmit “Message | 09-24-2009 |
20100020734 | BASE TRANSCEIVER STATION, USER EQUIPMENT, COMMUNICATION METHOD OF BASE TRANSCEIVER STATION, AND RADIO COMMUNICATION SYSTEM - A base transceiver station that is communicable with a plurality of user equipment s includes a receiving unit that receives battery information of the user equipment, and a controller that controls allocation of radio resources to be used to transmit data addressed to the plurality of user equipments based on the battery information received by the receiving unit. | 01-28-2010 |
20100190505 | BASE STATION, COMMUNICATION TERMINAL, METHOD FOR COMMUNICATION AT BASE STATION, METHOD FOR COMMUNICATION AT COMMUNICATION TERMINAL, AND COMMUNICATION SYSTEM - According to priorities determined on the basis of a number of pieces of battery information which concern batteries of a number of communication terminals and each of which is received from the communication terminals, data communication with communication terminals are controlled. The priorities are varied, irrespective of a variation in the pieces of battery information, according to a rule predetermined. | 07-29-2010 |
20100234055 | MOBILE USER TERMINAL, MOBILE COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD - A mobile user terminal, which transmits downlink quality information indicating downlink channel quality and an uplink pilot signal to a base station, in which a carrier frequency used for transmitting the downlink quality information and a carrier frequency used for transmitting the uplink pilot signal are selectable respectively from among a plurality of carrier frequencies assigned to a mobile user terminal, a mobile user terminal comprising of a radio transmitting unit, which transmits said downlink quality information and said uplink pilot signal by using the same carrier frequency among a plurality of carrier frequencies or by using adjacent carrier frequencies among a plurality of carrier frequencies. | 09-16-2010 |
20110212685 | TERMINAL DEVICE, RELAY DEVICE, AND BASE STATION COMMUNICATION METHOD - A communication method includes at a relay device, receiving first data from the base station, the first data including first control information that represents a first communication mode from the base station to the relay device, adding second control information to the received first data, the second control information representing a second communication mode from the relay device to the terminal device, and relaying second data to the terminal device, the second data including the first data added with the second control information; and at a terminal device, receiving the first data of the first communication mode storing the first data in a buffer, performing reception processing on the second data based on the second control information included in the second data, performing reception processing on the first data based on the first control information included in the second data, and combining the first and second data. | 09-01-2011 |
20110263210 | MOBILE USER TERMINAL, MOBILE COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD - A mobile user terminal includes a receiver which receives a signal, and a processor which measures downlink channel quality based on the signal and does not transmit downlink channel quality information and an uplink pilot signal simultaneously at a period which the mobile user terminal is a state of transmission off in an intermittent fashion. | 10-27-2011 |
20120230215 | MOBILE USER TERMINAL, MOBILE COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD - A method for using a mobile user terminal includes a receiving a signal and a measuring downlink channel quality based on the signal; wherein downlink channel quality information and an uplink pilot signal simultaneously is not transmitted at a period which the mobile user terminal is a state of transmission off in an intermittent fashion. | 09-13-2012 |
20120230321 | MOBILE USER TERMINAL, MOBILE COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD - A mobile user terminal includes a receiver which receives a signal, and a processor which measures downlink channel quality based on the signal and does not transmit downlink channel quality information and an uplink pilot signal simultaneously at a period which the mobile user terminal is a state of transmission off in an intermittent fashion. | 09-13-2012 |
20120238297 | COMMUNICATION CONTROLLER, COMMUNICATION CONTROL METHOD AND RADIO COMMUNICATION SYSTEM - A communication controller includes a processor. The processor performs a process of estimating a moving route of a mobile station connected through a network and a process of determining a timing to start transmission of data to be transmitted between the network and the mobile station based on a prediction result of a communication quality of the mobile station according to the estimated moving route and a size of the data. | 09-20-2012 |
20120289271 | DATA DISTRIBUTION SYSTEM, SERVER, BASE STATION, AND METHOD - A data distribution system includes a mobile station, a base station, and a server that distributes data to the mobile station via the base station. The base station transmits information about a line condition between the base station and the mobile station to the server. The server distributes data to the base station based on the information about the line condition. | 11-15-2012 |
20130016683 | MOBILE USER TERMINAL, MOBILE COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD - A mobile user terminal, which transmits downlink channel quality information indicating downlink channel quality and an uplink pilot signal to a base station, whereby a carrier frequency used for transmitting the downlink quality information and a carrier frequency used for transmitting the uplink pilot signal are selectable respectively from among a plurality of carrier frequencies assigned to the mobile user terminal; the mobile user terminal includes a radio transmitter, which transmits the downlink quality information and the uplink pilot signal in an intermittent fashion to the base station; and the radio transmitter transmits the downlink quality information and the uplink pilot signal by using a same carrier frequency among the plurality of carrier frequencies or by using adjacent carrier frequencies among the plurality of carrier frequencies, in a period corresponding to a state of intermittent communicate. | 01-17-2013 |
20130028240 | MOBILE USER TERMINAL, MOBILE COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD - A mobile user terminal, which communicates with a base station in an intermittent fashion, the mobile user terminal includes a radio transmitter which transmits downlink channel quality information indicating downlink channel quality and an uplink pilot signal to a base station in an intermittent fashion; and a transmit time controller which synchronizes transmit time of the downlink quality information and transmit time of the uplink pilot signal relative to each other, such that the downlink quality information and the uplink pilot signal are sent in adjacent different timings in a period corresponding to a state of intermittent communicate. | 01-31-2013 |