Patent application number | Description | Published |
20100074198 | SETTING OF NETWORK ALLOCATION VECTORS IN A WIRELESS COMMUNICATION SYSTEM - In a wireless communication system where packet transmission begins after a preparation process is performed between a source and a destination, the source stores, in a header of a preparation packet, first duration information corresponding to an end of a first response packet sent from the destination and second duration information corresponding to an end of a second response packet sent from the destination. A neighboring station having received the preparation packet sets a first NAV relating to a scheduled reception completion time of the first response packet based on the first duration information and a second NAV relating to a scheduled reception completion time of the second response packet based on the second duration information and ignores the second NAV when no packet transmission is detected within the first NAV period or within a predetermined time after the scheduled reception completion time of the first response packet. | 03-25-2010 |
20100142493 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD AND COMPUTER PROGRAM - The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible. | 06-10-2010 |
20100210221 | COMMUNICATION DEVICE, COMMUNICATION CONTROL METHOD AND COMMUNICATION SYSTEM - There is provided a communication device including: a first radio communication unit capable of radio communication in accordance with a first communication method; and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, wherein the first radio communication unit transmits an instruction signal instructing to learn a beam directionality to another communication device, and the second radio communication unit transmits a beam reference signal used for learning a beam directionality to said another communication device after completion of transmission of the instruction signal by the first radio communication unit and before reception of a response signal to the instruction signal. | 08-19-2010 |
20100271991 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, COMPUTER PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - A wireless communication apparatus includes a packet-generating section and a transmission section. The generating section is provided for generating a packet and characteristically performing symbol repetition on a preamble of the packet. The transmission section is provided for transmitting the packet subjected to the symbol repetition as a wireless signal. | 10-28-2010 |
20100273428 | Wireless Communication Apparatus, Wireless Communication Method, Computer Program, and Wireless Communication System - A wireless communication apparatus includes: a first wireless communication section performing wireless communication on the basis of a first communication mode; a second wireless communication section performing wireless communication on the basis of a second communication mode using a different frequency band from the first communication mode; a beam learning signal generation section generating a beam learning signal for specifying a beam pattern at the time of the communication based on the second communication mode and transmitting the beam learning signal from the second wireless communication section; a response information acquisition section acquiring response information responding to the transmitted beam learning signal; and a preliminary information generation section generating preliminary information so as not to cause interference among a plurality of wireless communications using the second communication mode on the basis of the response information and transmitting the preliminary information from the first wireless communication section. | 10-28-2010 |
20110025543 | OPERATION TERMINAL, PROCESSING METHOD PERFORMED BY THE OPERATION TERMINAL, INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, AND INFORMATION PROCESSING METHOD PERFORMED BY THE INFORMATION PROCESSING SYSTEM - There is provided an operation terminal including a mouse which has a spherical object, an electric power acquisition section which has a piezoelectric element and also converts energy generated by rotation of the spherical object by a force applied by a user into energy for striking the piezoelectric element, and a capacitor section which acquires and accumulates electric power generated by striking the piezoelectric element. | 02-03-2011 |
20110025921 | INFORMATION PROCESSING APPARATUS, OPERATION TERMINAL, INFORMATION PROCESSING SYSTEM, AND INFORMATION PROCESSING METHOD PERFORMED BY THE INFORMATION PROCESSING SYSTEM - There is provided an information processing apparatus including a reception section for receiving a trigger packet, which is a packet smaller than a command packet including a command for designating processing to be executed by the information processing apparatus, from an operation terminal via a wireless signal, a trigger packet acquisition section for acquiring the trigger packet from the wireless signal received by the reception section, an electric power-supply packet generation section for generating an electric power-supply packet for supplying electric power, when the trigger packet is acquired by the trigger packet acquisition section, and a transmission section for transmitting the electric power-supply packet generated by the electric power-supply packet generation section to the operation terminal via a wireless signal. | 02-03-2011 |
20110065466 | MOBILE STATION DEVICE, BASE STATION DEVICE, AND RADIO COMMUNICATION SYSTEM - There is provided a mobile station including a reception section which receives a radio signal from a base station, a communication information acquisition section which acquires, based on the radio signal received by the reception section, communication information which is information related to communication with the base station, a position information acquisition section which acquires position information indicating a position of the mobile station, and a transmission section which transmits the position information acquired by the position information acquisition section and the communication information acquired by the communication information acquisition section to the base station using a radio signal. | 03-17-2011 |
20110244908 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - A wireless communication system, method and apparatus cooperate to use a wireless coordination signal from a control station in a first frequency band to establish direct links in a second frequency band between different terminals. Once established, the direct links in the second frequency band operate without further needing intervention by the control station. The first frequency band is 1 GHz or higher, and the second frequency band is at a higher frequency than the first frequency band. | 10-06-2011 |
20110279319 | Communication Device, Communication Control Method and Communication System - To enable high-speed learning of an antenna directionality to be used for millimeter-wave communication, there is provided a communication device including a first radio communication unit capable of radio communication in accordance with a first communication method, and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, in which, upon receiving an instruction signal instructing to learn a beam directionality, the first radio communication unit determines a reception start time point of a beam reference signal based on the instruction signal, and the second radio communication unit starts reception of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal. | 11-17-2011 |
20110305162 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM (AS AMENDED) - While directional communication using millimeter waves is realized, the number of communication stations through which simultaneous communication is possible is increased to increase the throughput of the entire system. | 12-15-2011 |
20110305236 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - While directional communication using millimeter waves is realized, the number of communication stations through which simultaneous communication is possible is increased to increase the throughput of the entire system. | 12-15-2011 |
20110316744 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - By effectively utilizing the beam pattern used at the time of the last communication, a directional link can be efficiently established, thereby reducing overhead. When establishing a link, a communication apparatus | 12-29-2011 |
20120020420 | COMMUNICATION DEVICE AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - Suitable beam pattern control is performed while performing access control based on physical carrier sense. | 01-26-2012 |
20120028588 | Communication Apparatus and Communication Method, Computer Program, and Communication System - To appropriately effect a coordination with a plurality of communication parties that perform a millimeter wave communication. | 02-02-2012 |
20120039257 | COMMUNICATION APPARTUS, COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - Even when the lengths of data items to be transmitted to users are not the same, the frames multiplexed at the same time finally have the same frame length and are transmitted. | 02-16-2012 |
20120044900 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - A learning on a weight of an adaptive array antenna which becomes necessary for a space division multiple access is carried out while a backward compatibility with a conventional standard is maintained. | 02-23-2012 |
20120057622 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - Appropriate communication operation is performed by employing space division multiple access in which wireless resources on a space axis are shared by a plurality of users. | 03-08-2012 |
20120093137 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD AND COMPUTER PROGRAM - The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible. | 04-19-2012 |
20120099530 | COMMUNICATION APPARATUS AND METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - Communication operations are optimally conducted by applying space-division multiple access in which wireless resources on a spatial axis are shared among a plurality of users. | 04-26-2012 |
20120121089 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, OPERATION TERMINAL, AND INFORMATION PROCESSING SYSTEM - Provided is an information processing apparatus including a security level determination section which determines a security level at a time of transmitting a key to an operation terminal, as a transmission security level, a transmission power determination section which determines a transmission power in accordance with the transmission security level and a key-dividing number included in a key transmission request, a key acquisition section which acquires each key fragment by dividing the key into the key-dividing number, and a transmission section which transmits the each key fragment acquired by the key acquisition section using the transmission power determined by the transmission power determination section, via a wireless signal to the operation terminal. | 05-17-2012 |
20120122392 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - The directivity of an antenna is efficiently trained between a transmitter and a receiver, and the training results are efficiently fed back from the receiver to the transmitter. | 05-17-2012 |
20120202501 | METHOD FOR PERFORMING HANDOVER, USER EQUIPMENT, BASE STATION, AND RADIO COMMUNICATION SYSTEM - Provided is a method for performing a handover from a first base station to a second base station by a user equipment that is performing a radio communication over a communication channel formed by aggregating a plurality of component carriers. The method includes a step of transmitting a handover command for a component carrier for which a handover has been approved by the second base station among the plurality of component carriers from the first base station to the user equipment and a step of trying to make an access from the user equipment to the second base station for each component carrier in response to the handover command. | 08-09-2012 |
20120224534 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER PROGRAM AND COMMUNICATION SYSTEM - A communication apparatus to transmit a plurality of frames in a network, where each frame includes one or more symbols having a symbol length, includes a data processing unit. The data processing unit acquires an inter-frame space between two consecutive frames from the plurality of frames. The data processing unit further adjusts the inter-frame space between the two consecutive frames upon determination that the inter-frame space is not an integral multiple of the symbol length. The communication apparatus also includes a transmitter unit to transmit the adjusted consecutive frames. | 09-06-2012 |
20120243510 | METHOD FOR PERFORMING HANDOVER, USER EQUIPMENT, AND RADIO COMMUNICATION SYSTEM - A mobile station in a wireless communication network. The mobile station includes a radio communication that transmits an access request message to a base station via a first communication resource, and receives a timing adjustment in response to the access request message from the base station. The mobile station also includes an adjustment value storage unit that stores the timing adjustment, and a control unit that adjusts access timing corresponding to a second communication resource based on the timing adjustment value stored in the adjustment value storage unit. The radio communication unit then communicates with the base station via the first communication resource and the second communication resource. | 09-27-2012 |
20120287911 | BASE STATION, USER EQUIPMENT, COMMUNICATION CONTROL METHOD, AND RADIO COMMUNICATION SYSTEM - A base station includes a radio communication unit that establishes | 11-15-2012 |
20120307696 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD AND PROGRAM - A wireless communication device including: a transmitter unit configured to transmit an RTS (Request To Send) packet to a plurality of wireless communication devices; a receiver unit configured to receive a CTS (Clear To Send) packet responding to the RTS packet; and a data processing unit configured to transmit data packets from the transmitter unit to the plurality of wireless communication devices when the CTS packet is received by the receiver unit from at least some of the plurality of wireless communication devices. | 12-06-2012 |
20120307737 | RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION SYSTEM - To be provided is a radio communication device including a packet generation unit for generating a packet including first decoding information that can be recognized by a radio communication device corresponding to a first communication scheme, second decoding information that can be recognized by a radio communication device corresponding to a second communication scheme and third decoding information that can be recognized by a radio communication device corresponding to a third communication scheme, and a transmission unit for transmitting the packet generated by the packet generation unit. | 12-06-2012 |
20120307738 | COMMUNICATION APPARATUS, COMMUNICATION CONTROL METHOD, AND COMMUNICATION SYSTEM - Provided is a communication apparatus including a first wireless communication part capable of performing wireless communication according to a first communication scheme and a second wireless communication part capable of performing wireless communication according to a second communication scheme that uses a higher frequency band than the first communication scheme, wherein the second wireless communication part determines a reception timing to receive a beacon transmitted according to the second communication scheme based on a time when a predetermined control signal has been received by the first wireless communication part, and forms, at the determined reception timing, a reception beam having a directionality learned in advance. | 12-06-2012 |
20120314633 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD - A wireless communication device including: a data processing unit configured to generate an RTS (Request To Send) packet including response timing information designating transmission timings of CTS (Clear To Send) packets from each of a plurality of wireless communication devices; and a transmitter unit configured to transmit the RTS packet generated by the data processing unit. | 12-13-2012 |
20130065540 | COMMUNICATION DEVICE, COMMUNICATION CONTROL METHOD AND COMMUNICATION SYSTEM - There is provided a communication device including: a first radio communication unit capable of radio communication in accordance with a first communication method; and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, wherein the first radio communication unit transmits an instruction signal instructing to learn a beam directionality to another communication device, and the second radio communication unit transmits a beam reference signal used for learning a beam directionality to said another communication device after completion of transmission of the instruction signal by the first radio communication unit and before reception of a response signal to the instruction signal. | 03-14-2013 |
20130083723 | RELAY DEVICE, RELAY METHOD, WIRELESS COMMUNICATION SYSTEM, BASE STATION, AND WIRELESS COMMUNICATION DEVICE - Provided is a relay device including a receiving unit for receiving information from a plurality of wireless communication devices, a storage unit for accumulating the information received from the plurality of wireless communication devices by the receiving unit, an information processing unit for aggregating the information accumulated in the storage unit, and a transmitting unit for transmitting the information aggregated by the information processing unit to a base station. | 04-04-2013 |
20130142127 | WIRELESS COMMUNICATION DEVICE, PROGRAM, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM - Provided is a wireless communication device, including a data processing unit that generates a data packet, and a transmitter unit that transmits the data packet generated by the data processing unit, wherein the data processing unit sets information for use other than an NAV setting to a Duration field in the data packet. | 06-06-2013 |
20130157581 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, COMPUTER PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - A wireless communication apparatus includes: a first wireless communication section performing wireless communication on the basis of a first communication mode; a second wireless communication section performing wireless communication on the basis of a second communication mode using a different frequency band from the first communication mode; a beam learning signal generation section generating a beam learning signal for specifying a beam pattern at the time of the communication based on the second communication mode and transmitting the beam learning signal from the second wireless communication section; a response information acquisition section acquiring response information responding to the transmitted beam learning signal; and a preliminary information generation section generating preliminary information so as not to cause interference among a plurality of wireless communications using the second communication mode on the basis of the response information and transmitting the preliminary information from the first wireless communication section. | 06-20-2013 |
20140050323 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, OPERATION TERMINAL, AND INFORMATION PROCESSING SYSTEM - Provided is an information processing apparatus including a security level determination section which determines a security level at a time of transmitting a key to an operation terminal, as a transmission security level, a transmission power determination section which determines a transmission power in accordance with the transmission security level and a key-dividing number included in a key transmission request, a key acquisition section which acquires each key fragment by dividing the key into the key-dividing number, and a transmission section which transmits the each key fragment acquired by the key acquisition section using the transmission power determined by the transmission power determination section, via a wireless signal to the operation terminal. | 02-20-2014 |
20140056263 | COMMUNICATION DEVICE, COMMUNICATION CONTROL METHOD AND COMMUNICATION SYSTEM - There is provided a communication device including: a first radio communication unit capable of radio communication in accordance with a first communication method; and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, wherein the first radio communication unit transmits an instruction signal instructing to learn a beam directionality to another communication device, and the second radio communication unit transmits a beam reference signal used for learning a beam directionality to said another communication device after completion of transmission of the instruction signal by the first radio communication unit and before reception of a response signal to the instruction signal. | 02-27-2014 |
20140057668 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, COMPUTER PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - A wireless communication apparatus includes: a first wireless communication section performing wireless communication on the basis of a first communication mode; a second wireless communication section performing wireless communication on the basis of a second communication mode using a different frequency band from the first communication mode; a beam learning signal generation section generating a beam learning signal for specifying a beam pattern at the time of the communication based on the second communication mode and transmitting the beam learning signal from the second wireless communication section; a response information acquisition section acquiring response information responding to the transmitted beam learning signal; and a preliminary information generation section generating preliminary information so as not to cause interference among a plurality of wireless communications using the second communication mode on the basis of the response information and transmitting the preliminary information from the first wireless communication section. | 02-27-2014 |
20140161097 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - A wireless communication system, method and apparatus cooperate to use a wireless coordination signal from a control station in a first frequency band to establish direct links in a second frequency band between different terminals. Once established, the direct links in the second frequency band operate without further needing intervention by the control station. The first frequency band is 1 GHz or higher, and the second frequency band is at a higher frequency than the first frequency band. | 06-12-2014 |
20140376504 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - Even when the lengths of data items to be transmitted to users are not the same, the frames multiplexed at the same time finally have the same frame length and are transmitted. | 12-25-2014 |
20150023299 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD AND COMPUTER PROGRAM - The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible. | 01-22-2015 |
20150043375 | BASE STATION, USER EQUIPMENT, COMMUNICATION CONTROL METHOD, AND RADIO COMMUNICATION SYSTEM - A base station includes a radio communication unit that establishes communication with a mobile communication terminal using a plurality of component carriers. The base station further includes a determination unit that determines a handover factor. The base station also includes a control unit allocates to the mobile communication terminal a measurement time interval for at least one component carrier from the plurality of component carriers according to the handover factor. A channel quality of the at least one component carrier of another base station is measured during the measurement time interval. | 02-12-2015 |