| Patent application number | Description | Published |
|---|
| 20090103645 | DIGITAL MOBILE COMMUNICATION SYSTEM AND TRANSMISSION/RECEPTION METHOD THEREOF - A radio communication system in which a transmission station performs window function processing on a transmission symbol to which cyclic prefixes have been attached for each specified number of samples, then transmits the signal, and a receiving station extracts and demodulates effective signal portions from the received signal, wherein the transmission station uses a control channel to notify the receiving station of window width N | 04-23-2009 |
| 20090131113 | BASE STATION APPARATUS AND RECEPTION PROCESSING METHOD THEREOF - In a base station apparatus, signal processing units are connected to a corresponding antenna unit and another antenna unit, a part of resources for processing a signal received by the antenna unit corresponding to each signal processing unit is allocated to processing of a signal received by the other antenna unit, and the signals received by the corresponding antenna unit and the other antenna unit are subjected to multi-antenna reception processing using the resources. | 05-21-2009 |
| 20090175374 | Multiple-Input Multiple-Output Transmission System - In a multiple-input multiple-output transmission system (MIMO system), a receive station detects whether or not there is an error in each data stream, estimates the state of the propagation path of each transmit antenna and reports, to the transmitting side, re-transmission necessary/unnecessary information, for every data stream, created based upon whether or not there is an error, and the state of the propagation path of each transmit antenna. A transmit station decides a transmit antenna that transmits a data stream requiring re-transmission, based upon the reported state of the propagation path of each transmit antenna, and re-transmits the data stream requiring re-transmission from the transmit antenna decided. | 07-09-2009 |
| 20090219876 | RADIO RESOURCE ALLOCATION CONTROL APPARATUS AND METHOD AND BASE STATION - A radio resource allocation control apparatus for controlling allocation of radio resources used in communication by a plurality of user equipment in a wireless communication system, the apparatus including a selecting unit for selecting a user equipment to which the allocation is performed by using a priority evaluation formula in which a plurality of user equipment having wireless communication characteristics that have a higher tendency of being selected as a target of the allocation vary when different coefficients are imparted. The apparatus includes a control unit for controlling the coefficients individually for the radio resources. | 09-03-2009 |
| 20090232122 | Radio Base Station, Radio Terminal and Radio Communication Method - Date that is to be transmitted from transmitting antennas in each of a plurality of resource blocks, obtained by dividing a radio resource, used for communication with a radio terminal is multiplied by weigh information. A group of plural pieces of the weight information associated with resource blocks to be transmitted per unit time is controlled. | 09-17-2009 |
| 20090238134 | WIRELESS COMMUNICATION APPARATUS, WIRELESS TRANSMISSION METHOD AND WIRELESS RECEPTION METHOD - A wireless communication apparatus that transmits a wireless signal, the wireless communication apparatus including a dividing unit that divides data transmitted in a data area of a frame format of the wireless signal into a plurality of segments. The wireless communication apparatus includes an encoding unit that encodes the data segmented by the dividing unit segment by segment. | 09-24-2009 |
| 20090270101 | BASE STATION APPARATUS, MOBILE COMMUNICATION SYSTEM AND CELL SELECTION COMMUNICATION METHOD - Provided are a base station apparatus and a cell selection communication method which suppresses wasteful consumption of wireless resources. The base station apparatus is provided with a basic antenna for forming a first cell, and a switching unit. The switching unit is connected to a boundary antenna, which has an area in the vicinity of a cell boundary between the first cell and a second cell adjacent to the first cell as a propagation area (an area smaller than the second cell) by directivity. The switching unit switches an antenna for transmitting wireless signals (data) to a terminal device in the propagation area of the boundary antenna, between the basic antenna and the boundary antenna. | 10-29-2009 |
| 20090305693 | RADIO COMMUNICATION SYSTEM, BASE STATION AND RANDOM ACCESS CHANNEL TRANSMISSION METHOD THEREOF - A random access channel transmission method in which a user terminal selects a preamble pattern from among a plurality of known preamble patterns and transmits that preamble pattern to a base station, where that transmission method comprises: a step of dividing a cell into a plurality of areas, and setting one or more preamble patterns and the number of repetitions for transmitting the preamble pattern for each area; and a step wherein a user terminal that exists in an are close to the base station transmits a specified preamble pattern one time, and a user terminal that exists in an area far from the base station transmits another specified preamble pattern a plurality of times. | 12-10-2009 |
| 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 |
| 20100074229 | CONTROL CHANNEL TRANSMITTING METHOD, BASE STATION AND TERMINAL - A control channel transmitting method includes selecting one control channel format from among a plurality of control channel formats having different numbers of control points, according to whether to carry out multiple input multiple output transmission; and transmitting a control channel with the use of the selected control channel format. | 03-25-2010 |
| 20100104040 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - On the transmitting side, a decision is made as to whether to add pilot symbols which are separate from basic pilot symbols, to frames, based on the propagation path state, and when symbols are added, control symbols comprising information relating to the additional pilot symbols are generated, and frames comprising basic pilot symbols, control symbols, additional pilot symbols, and data symbols are assembled and transmitted. On the receiving side, control symbols included in the received frames are demodulated, and a judgment is made as to whether additional pilot symbols are included in the received frames based on the control symbol information, and if additional pilot symbols are included, the additional pilot symbols are used to estimate the propagation path, and the propagation path estimation value is used to demodulate data symbols. | 04-29-2010 |
| 20100105320 | WIRELESS RELAY DEVICE - A wireless device connected to a plurality of wireless control devices connecting with a monitoring device, and controlled and monitored by the monitoring device via the wireless control device, the wireless device includes a transmitting and receiving unit transmitting and receiving a signal to and from the wireless control device. The wireless device includes a selecting unit selecting, from within the plurality of wireless control devices, the one wireless control device which transmits and receives a control and monitor signal, contained in the signal, by which the monitoring device controls and monitors a self-device. | 04-29-2010 |
| 20100118840 | PILOT ARRANGEMENT METHOD IN MOBILE RADIO COMMUNICATION SYSTEM AND TRANSMITTER/RECEIVER ADOPTING SAME - A pilot arrangement method in a mobile radio communication system by which, in order to avoid a problem that poor CQI accuracy affects the scheduling of channel arrangement to cause the throughput to be deteriorated, a working frequency band is divided into a plurality of predetermined bands and time division multiplexing is performed. A known pilot symbol is inserted into the predetermined frequency bands at predetermined reference intervals. Furthermore, the known pilot symbol is inserted into at least one of the predetermined frequency bands at smaller intervals than the predetermined reference intervals and arranged. | 05-13-2010 |
| 20100136900 | Radio Relay Device and Method - A radio relay method for relaying and transmitting a received radio signal, including receiving the radio signal as a first received signal through a first antenna, outputting a first gain controlled signal which controls gain of the first received signal, transmitting a first relay signal which amplifies the first gain controlled signal, receiving the radio signal as a second received signal through a second antenna, outputting a second gain controlled signal which controls gain of the second received signal, transmitting a second relay signal which amplifies the second gain controlled signal. Father including generating a first wait which is used to remove self interference from the first received signal, based on the first and second gain controlled signals and the first input signal used to control the gain, and removing the self interference from the first received signal based on the first wait. | 06-03-2010 |
| 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 |
| 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 |
| 20100220685 | PILOT ARRANGEMENT METHOD IN MOBILE RADIO COMMUNICATION SYSTEM AND TRANSMITTER/RECEIVER ADOPTING SAME - A pilot arrangement method in a mobile communication system in which a working frequency band is divided into a plurality of predetermined bands, and time division multiplexing is performed, the method comprising, inserting a known pilot symbol into the plurality of predetermined frequency bands at a predetermined reference interval; and inserting to arrange the known pilot symbol into at least one of the plurality of predetermined frequency bands at a smaller interval than the predetermined reference interval, wherein a pattern inserting the known pilot symbol into a at least the one of the plurality of predetermined frequency bands at the smaller interval is changed according to a predetermined pattern. | 09-02-2010 |
| 20110013585 | PILOT SIGNAL TRANSMISSION METHOD AND MOBILE COMMUNICATION SYSTEM - A method of transmitting pilot signals for channel compensation in a mobile communication system is disclosed. In the disclosed method, a first pilot signal and a second pilot signal are time-division multiplexed together with a data signal of a user into a time-division multiplexed signal which data signal is assigned a certain bandwidth; the time-division multiplexed signal is frequency-division multiplexed together with time division multiplexed signals of other users when wirelessly transmitted; and the first pilot signal is assigned a bandwidth larger than the bandwidth of the data signal and the second pilot signal is assigned a bandwidth smaller than the bandwidth of the data signal. | 01-20-2011 |
| 20110053629 | BASE STATION APPARATUS, ANTENNA DEVICE, TERMINAL DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A base station apparatus that communicates with a terminal device includes an acquiring unit that acquires propagation quality between the base station apparatus and the terminal device and propagation quality between the base station apparatus and an antenna device provided forward of the terminal device; and a scheduler unit that allocates wireless resources for communication with the terminal device, based on the propagation qualities acquired by the acquiring unit. | 03-03-2011 |
| 20110078530 | TRANSMITTING APPARATUS, RECEIVING APPARATUS AND INFORMATION COMMUNICATION METHOD - A wireless communication system in which retransmission is performed between a transmitting apparatus and a receiving apparatus, whereby the transmitting apparatus includes, a first transmitting unit to transmit first data to the receiving apparatus and retransmission controlling unit to perform transmission of second data, the data part of which is same as that of the first data, without waiting for a feedback signal from receiving apparatus regarding the first data, and to wait for a feedback signal from the receiving apparatus regarding the second data, and the receiving apparatus includes, a second transmitting unit to transmit the feedback signal regarding the second data to the transmitting apparatus. | 03-31-2011 |
