| Patent Number |
Title Of Patent |
Date Issued |
| 7567815 |
Wireless communication apparatus for synchronizing a frame cycle's beginning position in relatio |
July 28, 2009 |
| A communication station needs to autonomously and synchronously operate by maintaining an equal frame interval. A clock error is measured from a received packet in a wireless communication system where a beacon is transmitted periodically. This clock error is used to synchronize a co |
| 7567540 |
Wireless communication system, wireless communication apparatus, wireless communication method a |
July 28, 2009 |
| In order to realize low power consumption of a communicator and information transmission in short packets with a short latency in a network environment of a self-organized distribution type, each communication station performs a reception processing before and after a beacon transmis |
| 7545872 |
Signal component demultiplexing apparatus, filter apparatus, receiving apparatus, communication |
June 9, 2009 |
| A communication apparatus, a signal component demultiplexing apparatus, and a filter apparatus to reduce a load of FFT processing in a receiver in multi-carrier communication. The receiving apparatus provides a signal component demultiplexing apparatus before an FFT circuit and extracts |
| 7542453 |
Wireless communication system, wireless communication apparatus, wireless communication method, |
June 2, 2009 |
| Random access operation is performed under a communication environment in which a plurality of communication modes having different transmission rate coexist with small overhead. A high-grade communication station spoofs information of a packet length and a rate in a decoding portion so |
| 7535879 |
Wireless communication system, wireless communication apparatus, wireless communication method, |
May 19, 2009 |
| Random access operation is performed under a communication environment in which a plurality of communication modes having different transmission rate coexist with small overhead. A high-grade communication station spoofs information of a packet length and a rate in a decoding portion so |
| 7515609 |
Wireless communication system, wireless communication apparatus, wireless communication method, |
April 7, 2009 |
| Disclosed is a wireless communication system with communication stations that make information transmission therebetween by selecting a proper transmission rate under a communication environment where plural transmission rates coexist. In order for a transmission station for transmit |
| 7502614 |
Radio communication system, radio communication apparatus and radio communication method, and co |
March 10, 2009 |
| A radio communication network that requires no connection between base stations during handoff or when the cell is overloaded, is realized by using a receiver that has a multi-user detection function and a transmitter for synthesizing control information and user data to output the s |
| 7489622 |
Transmitting apparatus, receiving apparatus, communication system, transmission method, receptio |
February 10, 2009 |
| A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the |
| 7369870 |
Radio communication system, mobile radio communication apparatus and method therefor, fixed radi |
May 6, 2008 |
| Efficient radio communication is implemented in a usage pattern desired by users. A cellular phone as mobile radio communication apparatus communicates by air with a base station as fixed radio communication apparatus (Step S1). When the cellular phone detects that the cellular phone |
| 7302227 |
Communication method, communication device, and computer program |
November 27, 2007 |
| In order to solve a problem of an accumulation on the transmission side, a delay on the reception side, and the like at the time of transmission in a communication system such as a wireless LAN system, each communication station in a network transmits a beacon in which information with r |
| 7133458 |
Signal component demultiplexing apparatus, filter apparatus, receiving apparatus, communication |
November 7, 2006 |
| A communication apparatus, a signal component demultiplexing apparatus, and a filter apparatus for reducing a load of FFT processing in a receiver in multi-carrier communication, wherein the receiving apparatus provides a signal component demultiplexing apparatus before an FFT circui |
| 7110472 |
Transmission method, transmitter and receiver |
September 19, 2006 |
| A receiver for generating a transmission symbol stream by applying predetermined modulation processing to an encoded bit series obtained by encoding an information bit series having a predetermined transmission rate. The receiver generates a transmission-information bit series having |
| 7085564 |
Radio communication system, radio communication apparatus and radio communication method, and co |
August 1, 2006 |
| Under a multi-cell radio communication environment where connection between cells or TDMA frame synchronization is not established, a mobile station carries out an adjacent cell search under low power consumption. Adjacent cell information acquired through search by the mobile station |
| 7061888 |
Communication method and apparatus in which a total power of power control information is a fixe |
June 13, 2006 |
| When a base station and a plurality of terminal stations communicate with each other by radio, reception situations of signals transmitted from a base station are measured by respective terminal stations and measured information is transmitted to the base station. When the base station |
| 7003115 |
Communication apparatus, communication system and method of the same |
February 21, 2006 |
| A communication apparatus capable of reducing the amount of communication with other communication apparatuses is provided, wherein a content signal of a popular program is broadcasted in advance from a broadcast base station to terminals and stored in a memory of each. In a terminal, |
| 6992973 |
Transmitting apparatus, receiving apparatus, communication system, transmission method, receptio |
January 31, 2006 |
| A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the |
| 6977884 |
Transmitting apparatus, receiving apparatus, communication system, transmission method, receptio |
December 20, 2005 |
| A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the tran |
| 6909704 |
Communication system that rejects connections based on total transmission energy |
June 21, 2005 |
| When a base station and a plurality of terminal stations communicate with each other by radio, power control information for controlling electric power of a signal transmitted to the base station is multiplexed at the base station and transmission energy is adjusted such that total t |
| 6888789 |
Transmitting apparatus, receiving apparatus, communication system, transmission method, receptio |
May 3, 2005 |
| A transmitting apparatus, receiving apparatus, communication system, and a signal processing method of each applying a suitable modulation method and transmission path estimation method in accordance with characteristics of the transmission information for improving the transmission effi |
| 6882618 |
Transmitting apparatus, receiving apparatus, communication system, transmission method, receptio |
April 19, 2005 |
| A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the tran |
| 6816555 |
Signal component demultiplexing apparatus, filter apparatus, receiving apparatus, communication |
November 9, 2004 |
| A communication apparatus, a signal component demultiplexing apparatus, and a filter apparatus for reducing a load of FFT processing in a receiver in multi-carrier communication, wherein the receiving apparatus provides a signal component demultiplexing apparatus before an FFT circuit an |
| 6711142 |
Communication apparatus, communication system, and method of the same |
March 23, 2004 |
| A communication apparatus capable of increasing a bit rate of communication in the down direction by using an existing bidirectional communication system, wherein mobile management, call control, wireless management, etc. are performed and communication conditions are controlled by bidir |
| 6665533 |
Communication system, communication terminal, and information distribution apparatus |
December 16, 2003 |
| A communication system for broadcasting information of advertisements and other desired information to a plurality of terminals such as a cellular wireless communication system, wherein a common traffic channel (CTCH) for transmitting information to users of all terminals included in the |
| 6590860 |
Receiving device and signal receiving method |
July 8, 2003 |
| A receiving device makes the data conducted a high precision maximum likelihood sequence estimation and after transmission it can be restored with further improved accuracy. Since the receiving device (31, 32) for outputting a received signal (S27) upon receiving the transmission signal, |
| 6587510 |
Control information transmitting method, transmitter, and transmitting and receiving apparatus |
July 1, 2003 |
| A control information transmitting method for controlling transmission power, wherein a control symbol obtained by assigning control information for controlling transmission power to symbols of phase modulation is transmitted to a communication partner so as to control the transmission |
| 6574283 |
Communication method, transmission and reception apparatuses, and cellular radio communication s |
June 3, 2003 |
| A communication method, transmission and a reception apparatuses, and a cellular radio communication system in which waves interfering with a desired wave of a reception signal can be accurately treated as noise includes, a transmitter sorts out part of a signal sequence based on a pr |
| 6563881 |
Communication method and transmitter with transmission symbols arranged at intervals on a freque |
May 13, 2003 |
| When multiplexing channels which conduct communication at various transmission rates, each communication is made capable of conducting communication processing, such as information reception, with a minimum required processing amount needed by itself. A plurality of communication cha |
| 6532223 |
Communication method, transmission method, reception method, base station and terminal |
March 11, 2003 |
| A terminal in a wireless telephone system can efficiently search for available base stations. Communication of user information between a base station and a terminal is intermittently performed in a predetermined time slot period. The transmission and reception of user information at the |
| 6519292 |
Transmission method, transmitter and receiver |
February 11, 2003 |
| A transmission method and apparatus which perform communication without interfering with other types of communication is provided. A transmission symbol stream is generated by applying predetermined modulation processing to an encoded bit series obtained by encoding an information bit se |
| 6473410 |
Communication method and apparatus in which first and second control channels operate as an init |
October 29, 2002 |
| In a base station of a wireless telephone system, the control channel is set efficiently. A channel group for control information communication is provided as a channel to transmit from a base station in addition to the channel for information communication TCE with the terminal device. |
| 6456669 |
Data communication method, transmitter, and cellular radio communication system |
September 24, 2002 |
| The present invention makes it possible to transmit data while reducing the influence of fading caused on a transmission path. When communication data is transmitted by using a plurality of subcarriers arranged with a predetermined bandwidth, a data block consisting of a plurality of |
| 6411662 |
Communication terminal device, cellular radio communication system, and information communicatio |
June 25, 2002 |
| The present invention relates to a communication terminal device, a cellular radio communication system, and an information communication method, and measures the reception conditions of control information at a higher degree of accuracy. The present invention can measure the reception |
| 6381234 |
Communication method, base station and terminal apparatus |
April 30, 2002 |
| An access request to a base station or the like can be preferably performed in time division access wherein one transmission band of communication such as a wireless telephone system or the like is divided into time slots. The period of a time slot of a channel for acquiring an access |
| 6366625 |
Control information assigning method, control method, transmitting method, receiving method, tra |
April 2, 2002 |
| A control information assigning method whereby control information can be accurately transmitted. Present control information and past control information are formed into a pair to be assigned to one transmission symbol, so that a prescribed restricted condition is applied to the tra |
| 6363099 |
Physical channel assignment method and transmitter |
March 26, 2002 |
| A physical channel assignment method prevents the same logical channels from being always adjacent to each other on a frequency axis so that any interference between the adjacent channels can be averaged. By using the values of first pseudo-noise codes as the channel numbers and assignin |
| 6351461 |
Communication method, base station and terminal apparatus |
February 26, 2002 |
| A communication resource allocation method is one in which a second apparatus allocates a communication resource based on a request from a first apparatus, and includes an allocation request step for transmitting an allocation request signal by the first apparatus to the second appar |
| 6347120 |
Communication method, transmitter, receiver, and cellular radio communication system |
February 12, 2002 |
| A communication method, transmitter, receiver, and cellular ratio communication system. When the high priority data and the low priority data are transmitted at the same time in the multi-carrier communication, a processing in accordance with the priority is performed to decode data |
| 6292663 |
Communication method, transmitter and receiver |
September 18, 2001 |
| The present invention relates to a communication method, and the invention enables it to avoid in advance mistaken restoration of a signal series which is sent in another communication even when the same channel is used in the other communication. An orthogonal matrix which is different |
| 6263205 |
Mobile radio communication system |
July 17, 2001 |
| A mobile radio communication system of the cellular system wherein a base station and a mobile station are connected to each other. Particularly, a mobile radio communication system wherein transmission power control is performed by a base station constructed such that, at least with reg |
| 6256355 |
Transmitter, receiver, communication method and radio communication system |
July 3, 2001 |
| A received symbol sequence is very accurately restored in a highly efficient manner with a simple configuration,wherein, respective bits of an information bit sequence are inputted to a cyclic register composed of the same number of registers as the number of bits of the information bit |
| 6243423 |
Receiver, transmitter-receiver, and communication method |
June 5, 2001 |
| A receiver restores a transmitted information bit series accurately by performing maximum-likelihood series estimation. The operation of the receiver includes estimating characteristics of a transmission line for each symbol based on the amplitude and phases of pilot symbols which are |
| 6230022 |
Transmitting method and apparatus, and sending power controlling method |
May 8, 2001 |
| In a transmitting method, it is possible to avoid influences of adjacent-channel interference to perform communication satisfactorily. In the case of performing transmission with a previously set sending power, the transmission is performed with the set sending power with respect to a |
| 6226526 |
Transmission power control method, base station apparatus and communication terminal |
May 1, 2001 |
| In a transmission power control method, a base station apparatus and a communication terminal, transmission between the transmission side and the reception side can be preformed with an optimum transmission power. In the transmission power control method in which at the transmission side |
| 6201970 |
Communication method transmitting apparatus and receiving apparatus |
March 13, 2001 |
| A transmission method according to the present invention is one of simultaneously using first and second communication resources by variable allocation and includes a step of, if the first or second communication resource is solely used, interleaving data by using the first or second |
| 6195534 |
Communication method, transmitter, receiver, wherein subcarriers are used to transmit digital he |
February 27, 2001 |
| A communication method, and a processing in accordance with the priority can be performed with a simple configuration even in the case of the communication of the multi-carrier method.The sub-carriers on which high priority data is superimposed and the sub-carriers on which low priority |
| 6195341 |
Communication method, base station and terminal apparatus |
February 27, 2001 |
| A communication method for carrying out communication in a multi-carrier format using a plurality of sub-carriers and including a first communication step of setting an interval among the plurality of sub-carriers to a first frequency interval when information of a first kind is comm |
| 6088345 |
Communication method, base station and terminal apparatus |
July 11, 2000 |
| In a radio communication such as a radio telephone system or the like, a transmission channel which can accommodate a change in a transmission capacity is set. While a terminal apparatus and a base station are in communication for transmitting a predetermined information using a pred |
| 6081721 |
Communication method, base station and terminal apparatus |
June 27, 2000 |
| In order cope with a change of the transmitting capacity in a wireless telephone system. A number of transmission channels are set within the transmission frequency band prepared for each base station. When a communication is made between the terminal equipment and the base station t |
| 6021125 |
Cellular wireless communications system and base station |
February 1, 2000 |
| A cellular wireless communication system for further improving the quality of communications. The base station (BS11) notifies the communication channel which the mobile station (MS10) is using, to the base stations (BS12, BS13) having the lower pathloss than the own station, the base |
| 5914932 |
Communication method and receiving apparatus |
June 22, 1999 |
| A reception method of a multicarrier system according to the present invention is one in which a phase-modulated data is transmitted by using each of a plurality of subcarriers, and includes a random data generating step of generating a phase shift data randomly changed, a multiplying st |
