| Patent application number | Description | Published |
|---|
| 20090245088 | COMMUNICATION EQUIPMENT WHICH RECEIVES OFDM SIGNAL, OFDM-BASED WIRELESS COMMUNICATION SYSTEM AND METHOD FOR RECEIVING OFDM SIGNAL - When a receiving apparatus which employs a OFDM-based cellular wireless communication scheme detects as an excessive signal for each frame, the signal having signal intensity exceeding a reference value after a Fourier transform, a gain variable according to an excessive quantity relative to the reference value is used for each frame to control signal intensity such that the amplitude thereof is at most the reference value. | 10-01-2009 |
| 20090279512 | WIRELESS COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS AND RADIO TERMINAL APPARATUS - A wireless communication system comprises radio base station apparatuses each of which transmits an estimation pilot in advance for estimating the quality of a downlink communication after a spatial signal processing performed after a time unified among the radio base station apparatuses; and radio terminal apparatuses each of which receives the estimation pilot to determine the quality of the downlink communication, thereby reporting the determined downlink communication quality to the radio base station apparatus via an uplink channel. The estimation pilot is transmitted at the same time and frequency established among the radio base station apparatuses by use of the same directivity beam as used for transmitting the data after the unified time. | 11-12-2009 |
| 20090305741 | BASE STATION AND WIRELESS COMMUNICATION SYSTEM - Provided is a wireless base station comprising: a power control unit, a reference information acquisition unit and a reference information storing unit, wherein the wireless base station comprises a first control signal receiving unit for receiving a first uplink control signal used by a mobile station connected to the wireless base station and for requesting the power control unit to control the transmission, and a second control signal receiving unit for receiving a second uplink control signal used by a mobile station connected to the neighbor base station and for requesting the power control unit to control the transmission power, and wherein the power control unit controls the transmission power of the downlink signal based on the request to control the transmission power from the first control signal receiving unit and the request to control the transmission power from the second control signal receiving unit. | 12-10-2009 |
| 20100035542 | Radio Communication System, A Repeater Apparatus and a Control Method of the Repeater - Provided is a radio communication system including a plurality of base stations and a repeater apparatus, in which the repeater apparatus amplifies and transmits a radio signal received from at least one of the plurality of base stations, and controls a domain in which the radio signal is transmitted based on a traffic amount of each of the plurality of base stations. Accordingly, the number of installed base stations which are costly is reduced, and an operating rate of the respective base stations is gained along with the decrease in number of installed base stations. | 02-11-2010 |
| 20100157930 | WIRELESS COMMUNICATION METHOD WITH PACKET SCHEDULING - To reduce power consumption of a mobile station, this invention provides a wireless communication method for communicating between a base station and a plurality of terminals using a plurality of channels, the channels being slots obtained by dividing frequency-divided carriers by time, in which the base station allocates a set of the channels which is composed of a plurality of neighboring carriers and/or a plurality of successive slots for the each terminal, and the base station allocates at least one of the channels included in the channel sets for packet transmission the terminals. | 06-24-2010 |
| 20100208720 | WIRELESS COMMUNICATION SYSTEM, INTER-BASE-STATION SYNCHRONIZATION METHOD AND BASE STATION - A wireless communication system includes an asynchronized base station apparatus to perform an operation that is equivalent to the synchronization with a synchronized base station apparatus having received a sync pulse. The system includes a synchronized base station that uses a received sync pulse to synchronize itself with a base station which is a different cell, an asynchronized base station located in the cell of the synchronized base station, and a terminal. The asynchronized base station includes a unit that determines a reception timing difference, at the terminal, between a transport signal transmitted by the synchronized base station and a transport signal transmitted by the asynchronized base station, and a unit that controls the transmission timing of the asynchronized base station such that the reception timing difference becomes equal to or less than a predetermined value. | 08-19-2010 |
| 20100216450 | RADIO COMMUNICATIONS SYSTEM, BASE STATION APPARATUS, GATEWAY APPARATUS, AND REMOTE CONTROLLER - A radio communications system includes, in base stations, or nodes nearer to a core network than the base stations, a terminal distribution checking unit, a unit of determining whether to execute intercell interference reduction based on the result of the checking, a coordination unit which executes intercell interference reduction between base stations in corporation with each other. | 08-26-2010 |
| 20100220607 | Broadband Wireless Communication Resource Assigning Method, Base Station Apparatus and Terminal Apparatus - A first problem is to reduce an enormous uplink throughput of a base station that feedback information needs so as to improve an uplink throughput of useful user data. A second problem is to carry out a frequency segment assignment to guarantee a number of communication times and a communication quality to every terminal apparatus so as to increase a downlink throughput. The second problem is solved together. As means to give the number of communication times per each terminal apparatus, means to estimate an expected value of the number of communication times per each terminal apparatus, and means to assign the terminal apparatus per each frequency segment are arranged in the base station apparatus. To increase the communication quality, necessary means in each terminal apparatus are: means to measure statistics values of a communication capacity with regard to all the frequency segments; means to feed back the statistics values to the base station apparatus; means to calculate the occurrence probability of a high communication capacity based on the communication capacity statistics values per each frequency segment of all the terminal apparatuses; and means to assign the terminal apparatus per each frequency segment. To fuse the means to give the number of communication times and the means to give the communication quality, the means to assign the terminal apparatus per each frequency segment that the base station apparatus has assigns a frequency segment that has a little number of competitors sharing a same segment, and has high average and dispersion of the communication capacity to each terminal apparatus. | 09-02-2010 |
| 20100234035 | RADIO COMMUNICATIONS SYSTEM - A radio communications system includes at least one terminal communication unit having one antenna that conducts a radio communication with a plurality of terminals; and at least one baseband modem that generates and decrypts a data signal, a cell being configured by at least one of the antenna, wherein the baseband modem divides a radio frequency band used for the radio communication into two or more subbands, generates and decrypts the data signal specific to each of the divided subbands, and allocates the data signal specific to the subband to the terminal communication unit, and wherein the terminal communication unit receives the data signal specific to the subband generated by the baseband modem, and forms the cell of each the subband by the data signal specific to the received subband. | 09-16-2010 |
| 20110038249 | TIMING ADJUSTMENT METHOD, RECEIVING STATION, AND TRANSMITTING STATION IN WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION SYSTEM - A discontinuous change in a transmission timing in a time domain, which is caused by a transmission timing adjustment processing of an OFDMA uplink or the like, brings about a discontinuous rotation of a signal phase in a frequency domain, resulting in reduced communication quality. A wireless communication system of the present invention allows the signal phase of the frequency domain in a receiving station to be continuous before and after the timing adjustment processings by controlling a signal sequence in a transmission signal after conversion in the time domain in synchronization with the timing adjustment processing. | 02-17-2011 |
| 20110134876 | Wireless Communication System, Wireless Communication Device, and Wireless Resource Management Method - It is provided a base station for providing a wireless communication area, which is coupled to a core network via a gateway, including: an interface for receiving settings of availability of allocation to terminals located in a border area of the wireless communication area and availability of allocation to terminals located in an area other than the border area for each of radio resource blocks which are defined by dividing radio resources available for use in the wireless communication area provided by the base station into predetermined units; and a plurality of profiles for defining scheduling limitations on the radio resources in the number of the profiles of patterns, being set via the interface, in which the base station applies scheduling limitations defined by the profile designated with the identifier and allocates the radio resources upon designation of one of the plurality of profiles with an identifier. | 06-09-2011 |
