Patent application number | Description | Published |
20090213806 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS TERMINAL DEVICE - Terminal capability information relating to the capability of a wireless terminal device in which at least one of a first frequency bandwidth for use in an up link and a second frequency bandwidth for use in a down link is variable is associated with a terminal category in advance. When the terminal capability information is received from the wireless terminal device, the terminal category is designated from the terminal capability information, a link is set to the wireless terminal device, and a control signal corresponding to the link setting is transmitted. Control can be simplified by setting the link along the terminal category. | 08-27-2009 |
20090318156 | Base Station Apparatus and Mobile Communication System - Disclosed is a handover method in radio communication. A base station apparatus monitors the receiving state of a terminal, detects, based upon the receiving state, whether the terminal is one in which there is a possibility that loss of a call or a decline in quality will occur or one in which loss of a call or a decline in quality has occurred, and hands over the terminal to another base station apparatus having a carrier frequency different from that of the present base station apparatus. | 12-24-2009 |
20100003995 | BASE STATION DEVICE, FREQUENCY ALLOCATION METHOD, AND MOBILE COMMUNICATION SYSTEM USING THE SAME - A base station device performs wireless communication with a terminal device. The base station device includes a setting unit to set a first frequency group in which frequencies that differ from frequencies used in an adjacent base station device are used, a second frequency group including different frequencies to the frequencies included in the first frequency group, and a third frequency group including frequencies that overlap at least partially the frequencies included in the first or second frequency group; an allocating unit to allocate a frequency included in one of the first to third frequency groups to the terminal device; and a transmission unit to transmit the allocated frequency to the terminal device. | 01-07-2010 |
20100034108 | Wireless Communication System - The terminal measures the wireless channel quality of each frequency band, and notifies the base station of the quality. The base station determines the frequency band to be used by the terminal on the basis of the notification from the terminal. Then, the terminal is grouped depending on the difference etc. in frequency band in operating the terminal, and notified which terminal group the terminal belongs. Upon receipt of the notification from the base station, the terminal sets its own available frequency band and terminal group, and measures the notified wireless channel quality of the available frequency band. The measurement result is notified to the base station. The base station perform a scheduling process for each available frequency band on the basis of the wireless channel quality of the available frequency band of the terminal, and starts communicating with the terminal. | 02-11-2010 |
20100040161 | WIRELESS TELECOMMUNICATION SYSTEM, TRANSMITTER AND RECEIVER - In a wireless telecommunication system for transmitting a plurality of streams from a base transmission station comprising a plurality of antennas to a mobile station comprising a plurality of antennas, the base transmission station respectively transmits, by way of a plurality of the antennas, each stream obtained by dividing data to be transmitted. The mobile station respectively receives each stream by utilizing the plurality of antennas. A measurement unit respectively measures a reception quality or received power from each antenna relating to a stream. A changeover unit carries out a handover for each stream according to a measurement result by the measurement unit. | 02-18-2010 |
20100046654 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for communications by a multicarrier transmission mode between a plurality of communications apparatuses, wherein an overall frequency band assigned to the communications system is divided into a plurality of frequency bands each having a constant bandwidth and a specific band. The divided bands are used to transmit used frequency band information thereby indicating the assignment of the remaining bands used between said communications apparatuses. The specific band is defined as a main band for transmitting control channel information including used frequency band information and data channel information. The main band may be added with an extension band for transmitting further data channel information. The main band and extension band can be changed in the frequency band used along with time or can be changed in the number thereof. Both the main band and the extension bands are preferably used for multiplexing by some of communications apparatuses. | 02-25-2010 |
20100329377 | RADIO COMMUNICATION SYSTEM - A radio communication system whereby one or a consecutive plurality of sub-carrier frequency intervals form sub-carrier groups each of which is assigned to a different user. The radio communication system includes a radio communication apparatus and a terminal configured to receive a control signal and a data signal from the radio communication apparatus. The terminal receives the control signal and the data signal according to a notified control signal position. | 12-30-2010 |
20110124298 | RADIO COMMUNICATION SYSTEM - A radio communication system in which a plurality of radio channels are divided in a frequency direction and mapped to a radio frame format, whereby each radio channel mapped in the radio frame format is assigned to each user or service. The radio communication system includes a radio communication apparatus and a terminal to receive a pilot signal and a data signal from the radio communication apparatus, whereby the radio communication apparatus controls a pilot signal position for each user or service and notifies information used for identifying the pilot signal position to the terminal. | 05-26-2011 |
20110200138 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications apparatus accommodated in a communications system for exchange of information between a communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers. The communications apparatus comprises of a dedicated transmission data generator for each communications apparatus, configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between each communications apparatus and a transmitter configured to transmit the dedicated frequency band information for each communications apparatus by using a specific frequency band which is set from among a plurality of frequency bands assigned to the communications system, in which the specific frequency band is set as a primary band in frequency band assigned to the communication system. | 08-18-2011 |
20110244788 | RADIO COMMUNICATIONS SYSTEM - A radio communications system includes a radio base station, an intermediate station to receive data from the radio base station and relay the received data; and another radio base station adjacent to the radio base station. The radio base station transmits data that is the same as the data to be relayed by the intermediate station, in synchronization with the relaying by the intermediate station and by using a radio resource that the intermediate station uses in the relaying of the received data. | 10-06-2011 |
20110256826 | WIRELESS COMMUNICATION SYSTEM - A wireless communication system includes a wireless base station, a mobile station configured to communicate with the wireless base station, and a relay station configured to relay the communication between the wireless base station and the mobile station. When the number of the mobile stations communicating with the wireless base station is judged to have become smaller than or equal to a given number, a power controller in the relay station executes at least one of power control to cut off the power for relaying the communication, power control to perform intermittent operation, and power control to perform power-saving operation. | 10-20-2011 |
20110261751 | RADIO COMMUNICATION SYSTEM - In a radio communication system a first radio station performs communication by the use of a first radio signal. A second radio station receives a second radio signal which is indistinguishable from the first radio signal. A third radio station is in a radio communication area of the first radio station and a radio communication area of the second radio station. A communication format conversion unit generates a third radio signal by converting a communication format of the second radio signal to a communication format which is distinguishable from the first radio signal, and communicates with the third radio station by the use of the third radio signal. | 10-27-2011 |
20120008546 | RELAY NODE, BASE STATION, AND USER EQUIPMENT FOR WIRELESS COMMUNICATIONS NETWORK - A relay node includes a processor that determines, based on uplink scheduler information, a target frequency band from plural frequency bands assigned to signals received from plural user equipments and multiplexes the signals received from the plural user equipments and a wireless communication interface that transmits the signals as a single carrier signal to a base station based on the target frequency band. | 01-12-2012 |
20120008547 | RELAY STATION, BASE STATION, RELAY METHOD AND COMMUNICATION METHOD USED IN WIRELESS COMMUNICATIONS NETWORK - A relay station includes a wireless communication interface configured to receive radio signals transmitted from plural mobile stations; and a processor configured to descramble the radio signals and extract identification information of physical layers of the mobile stations, and to convert the identification information of the physical layers to identification information of MAC layers, which are data link layers, and form a protocol data unit which includes the identification information of the MAC layers in a header and includes service data units of the radio signals. | 01-12-2012 |
20120069825 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND RADIO COMMUNICATION METHOD IN RADIO COMMUNICATION SYSTEM - A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code. | 03-22-2012 |
20120087433 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications apparatus accommodated in a communications system for exchange of information between a communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers. The communications apparatus includes a dedicated transmission data generator for each communications apparatus, configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between each communications apparatus; and a transmitter configured to transmit the dedicated frequency band information with dedicated control channel for each communications apparatus by using a specific frequency band which is set from among a plurality of frequency bands assigned to the communications system, in which the specific frequency band is set as a primary band in a frequency band assigned to the communication system. | 04-12-2012 |
20120094682 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, RELAY STATION APPARATUS AND RADIO COMMUNICATION METHOD FOR RADIO COMMUNICATION SYSTEM - A radio communication system including: a base station; a terminal; and a relay station, wherein the base station and the terminal perform radio communication via the relay station, the base station includes: a change unit which changes at least any of a radio resource allocation method for the relay station and the terminal, the radio resource allocation method and a scheduling method, or the radio resource allocation method, the scheduling method and a relay method in the relay station; and a transmission unit which transmits a change notice for notifying the relay station of the change by the change unit, the relay station includes a reception unit which receives the change notice, and the base station, the relay station, and the terminal perform radio communication using at least the radio resources allocating or allocated by the radio resource allocation method after the change. | 04-19-2012 |
20120099730 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND RADIO COMMUNICATION METHOD IN RADIO COMMUNICATION SYSTEM - A radio communication system, including: a first and second base station apparatuses which includes one or plurality of cells or sectors, respectively; and a terminal apparatus, wherein each of the first and second base station apparatuses includes: a processing unit which executes scrambling processing on a first and second transmission data that are different from each other for each cell or sector by using a first and second scrambling codes having a predetermined phase difference respectively, when the first and second transmission data are to be transmitted to the terminal apparatus respectively; and a transmission unit which transmits the first and second transmission data processed by the scrambling processing to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which executes descrambling processing on the first and second transmission data by using the first and second scrambling codes respectively. | 04-26-2012 |
20120120896 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS TERMINAL DEVICE - A wireless communication system, comprising
| 05-17-2012 |
20120120897 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS TERMINAL DEVICE - A wireless communication system, that includes, a category designation unit capable of designating a terminal category using a difference between a transmitting frequency and a receiving frequency available between the system and a wireless terminal device. | 05-17-2012 |
20120122409 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS TERMINAL DEVICE - A wireless communication system corresponding to a wireless terminal device in which at least one of a first frequency bandwidth for use in an up link and a second frequency bandwidth for use in a down link is variable, including a capability information reception unit capable of receiving and extracting terminal capability information transmitted from the wireless terminal device and related to capability of the wireless terminal device; a category designation unit capable of designating a terminal category to which the wireless terminal device belongs, based on the terminal capability information received and extracted by the capability information reception unit; and a link setting unit capable of setting a link to the wireless terminal device and transmitting a control signal depending on the link setting to the wireless terminal device, based on the terminal category designated by the category designation unit. | 05-17-2012 |
20120184316 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND RADIO COMMUNICATION METHOD IN RADIO COMMUNICATION SYSTEM - A radio communication system, includes a base station apparatus; and a terminal apparatus, wherein radio communication is performed between the base station apparatus and terminal apparatus, the terminal apparatus includes: a required time notification signal generation unit which generates a required time notification signal indicating a required time for change of a transmission bandwidth or a reception bandwidth to the base station apparatus; and a transmission unit which transmits the required time notification signal, and the base station apparatus includes a reception unit which receives the required time notification signal. | 07-19-2012 |
20120214431 | TRANSMITTER AND POWER SUPPLY CONTROL MODULE - A transmitter includes: a first envelope extractor that extracts a first envelope signal on the basis of a first modulated signal of a first frequency modulated with transmission data; a second envelope extractor that extracts a second envelope signal on the basis of a second modulated signal of a second frequency modulated with the transmission data, the second frequency being higher than the first frequency; an amplifier that amplifies one of the first modulated signal and the second modulated signal; a power adjuster that outputs a voltage of power supplied to the amplifier; and a controller that makes the amplifier amplify one of the first modulated signal and the second modulated signal and makes the power adjuster output the voltage of the supplied power on the basis of corresponding one of the first envelope signal and the second envelope signal. | 08-23-2012 |
20120275434 | Base Station Apparatus and Mobile Communication System - Disclosed is a handover method in radio communication. A base station apparatus monitors the receiving state of a terminal, detects, based upon the receiving state, whether the terminal is one in which there is a possibility that loss of a call or a decline in quality will occur or one in which loss of a call or a decline in quality has occurred, and hands over the terminal to another base station apparatus having a carrier frequency different from that of the present base station apparatus. | 11-01-2012 |
20120281669 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between a base station and a terminal by a multicarrier transmission mode using a plurality of subcarriers. The communication system includes a base station, a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data between said communication apparatuses; and a transmitter configured to transmit the frequency band information, using a specific frequency band, set from among a plurality of frequency bands assigned to the communications system, and to transmit data by using at least one frequency band set from among said plurality of frequency bands, and at the time of establishing the wireless channel, the frequency band usable by the communications apparatus is restricted, and said specific frequency band and said at least one frequency band set, other than the specific frequency band, are assigned within that restricted frequency band. | 11-08-2012 |
20120287808 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers, the communication system includes a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between said communication apparatuses and a transmitter configured to transmit the frequency band information by using a specific frequency band which is set from among a plurality of frequency band assigned to the communications system, and to transmit data information by using at least one frequency band set from among said plurality of frequency bands; and a receiver configured to receive the frequency band information by using the specific frequency band, wherein said specific frequency band also transmits data information and said specific frequency band is made variable. | 11-15-2012 |
20120287890 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers, the communication system comprising: a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between said communication apparatuses and a transmitter configured to transmit the frequency band information by using a specific frequency band which is set from among a plurality of frequency band assigned to the communications system, and to transmit data information by using at least one frequency band set from among said plurality of frequency bands and a receiver configured to receive the frequency band information by using the specific frequency band. Furthermore, at least one frequency band set from among said plurality of frequency bands, other than the specific frequency band, is made variable. | 11-15-2012 |
20120287891 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers, includes a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between said communication apparatuses; a transmitter configured to transmit the frequency band information by using a specific frequency band which is set from among a plurality of frequency band assigned to the communications system, and to transmit data information by using at least one frequency band set from among said plurality of frequency bands; a receiver configured to receive the frequency band information by using the specific frequency band, whereby the specific frequency band among said plurality of frequency bands and at least one frequency band set among the plurality of frequency bands, other than the specific frequency band, are made variable to avoid overlap. | 11-15-2012 |
20120294265 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers, the communication system includes a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between said communication apparatuses and a transmitter configured to transmit the frequency band information by using a specific frequency band which is set from among a plurality of frequency band assigned to the communications system, and to transmit data information by using at least one frequency band set from among said plurality of frequency bands and a receiver configured to receive the frequency band information by using the specific frequency band, whereby one or more of said frequency band is assigned consecutive with said specific frequency band along a frequency axis. | 11-22-2012 |
20120300730 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers, the communication system includes a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between said communication apparatuses and a transmitter configured to transmit the frequency band information by using a specific frequency band which is set from among a plurality of frequency band assigned to the communications system, and to transmit data information by using at least one frequency band set from among said plurality of frequency bands; and a receiver configured to receive the frequency band information by using the specific frequency band, wherein bandwidths of said plurality of frequency bands are made a predetermined value, and also numbers of subcarriers in each of the bands are made a predetermined value. | 11-29-2012 |
20120300731 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system for exchange of information between communications apparatuses by a multicarrier transmission mode using a plurality of subcarriers, that includes a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data between said communication apparatuses; a transmitter configured to transmit the frequency band information, using a specific frequency band, set from among a plurality of frequency band assigned to the communications system, to transmit data using at least one frequency band set from among said plurality of frequency bands; a receiver configured to receive the frequency band information by using the specific frequency band, wherein one or more of said frequency band is assigned not consecutive with said specific frequency band along a frequency axis, and at least one not used subcarrier is inserted between the specific frequency and the frequency band or between said frequency bands. | 11-29-2012 |
20120314657 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A communications system that includes a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information between said communication apparatuses; a transmitter configured to transmit the frequency band information by using a specific frequency band, set from among a plurality of frequency band assigned to the communications system, to transmit data information using at least one frequency band set from among said plurality of frequency bands; a receiver configured to receive the frequency band information, using the specific frequency band. The frequency band set as said at least one frequency band set from among said plurality of frequency bands, other than the specific frequency band, is made variable, at the time of establishing the wireless channel, the frequency band usable by the communications apparatus is restricted. | 12-13-2012 |
20130022002 | RADIO COMMUNICATION SYSTEM - A radio communication system wherein one or a consecutive plurality of sub-carriers at certain frequency intervals form sub-carrier groups each of which is assigned to a different user, the radio communication system including a radio communication apparatus; and a terminal configured to receive a notification for identifying control signal positions from the radio communication apparatus, wherein the terminal receives a control signal and a data signal according to the control signal positions identified by the notification. | 01-24-2013 |
20130343331 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND RADIO COMMUNICATION METHOD IN RADIO COMMUNICATION SYSTEM - A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code. | 12-26-2013 |
20140153525 | COMMUNICATIONS APPARATUS AND COMMUNICATIONS SYSTEM USING MULTICARRIER TRANSMISSION MODE - A base station in a communications system for exchange of information, includes, a transmission data generator configured to generate frequency band information indicating which frequency band is to be used for transmission of data information with a mobile station; a transmitter configured to transmit the frequency band information, using a specific frequency band which is set from among a plurality of frequency band assigned to the communications system, and to transmit data information by using at least one frequency band set from among said plurality of frequency bands; wherein at least one frequency band set from among said plurality of frequency bands, other than the specific frequency band, is made variable, wherein at the time of establishing the wireless channel, the frequency band usable by the mobile station is restricted, at least one frequency band, other than the specific frequency band, are dynamically assigned within that restricted frequency band. | 06-05-2014 |
20140314045 | RADIO COMMUNICATIONS SYSTEM - A scheduling process handles a plurality of communication services in a collective manner, thus making a radio communications system more operable. A pilot signal sender sends pilot signals with carrier frequencies each corresponding to an N (N≧1) different communication services. A scheduler collects N×n instances of propagation environment data from n (n≧1) terminal devices and selects terminal devices and communication services therefor by assigning terminal devices having a better propagation environment to the plurality of different communication services in a collective manner. The pilot signals are used by a propagation environment data sender to measure and report a propagation environment of each carrier frequency. A communication function configurer automatically sets up a communication function to adapt to the communication service that the base station has assigned. | 10-23-2014 |