Patent application number | Description | Published |
20090161600 | Wireless slave unit - In a network area of a wireless network managed by a wireless master device, a wireless slave device performs wireless network communication with another wireless slave device connected by wire to a terminal, and wired network communication with a terminal connected by wire to the wireless slave device. The wireless slave device includes a wireless reception unit ( | 06-25-2009 |
20090190553 | RADIO COMMUNICATION SYSTEM, RADIO TERMINAL, BASE STATION, AND BASE STATION SEARCH METHOD - A wireless communication system includes a wireless terminal and a plurality of base stations that can communicate with each other via a predetermined communication path that is different from the wireless communication path to the wireless terminal. The wireless terminal transmits a request signal to one of the base stations to request a response signal from another base station. The one base station transfers the received request signal to the other base station via the predetermined communication path. Upon reception of the request signal transferred from the one base station, the second base station transmits a response signal to the wireless terminal via the predetermined channel. The wireless terminal receives the response signal transmitted from the second base station via the predetermined channel. | 07-30-2009 |
20090238108 | RELAY DEVICE - A relay device receives transfer data from a transfer-source terminal and transfers the received transfer data to a transfer-destination terminal via relaying performed by another relay device. When the transfer data is received, the relay device establishes direct communication with the other relay device if information regarding the other relay device is attached to the received transfer data. If information regarding the other relay device is not attached, the relay device attaches information regarding itself to the transfer data and transfers the resulting transfer data to a wireless control station. | 09-24-2009 |
20090238196 | NETWORK SYSTEM AND RELAY DEVICE - when a network system of the present invention performs a bandwidth-guaranteed communication, a terminal device collects information on one or more relay devices on a path to another terminal device via a bandwidth request packet transmitted to the another terminal. When the bandwidth cannot be allocated, a detour path is searched according to the collected relay device information so as to perform the bandwidth-guaranteed communication via the detour path. | 09-24-2009 |
20100157819 | TRANSMISSION DEVICE, TRANSMISSION METHOD, SYSTEM LSI, AND PROGRAM - One transmission rate of a physical layer (PHY rate) is selected from among a plurality of PHY rates of a protocol stack by calculating one or more effective values of transmission rates of an upper layer of the protocol stack with respect to one or more PHY rates of the plurality of PHY rates respectively, and making a comparison with use of the calculated one or more effective values. Each of the one or more effective values is calculated based on (i) an ideal value of corresponding one of the transmission rates and (ii) a retransmission ratio via the physical layer that corresponds to a reception power value detected in the reception apparatus. | 06-24-2010 |
20100166010 | COMMUNICATION DEVICE, INTEGRATED CIRCUIT, TRANSMISSION RATE CONTROL METHOD, AND TRANSMISSION RATE CONTROL PROGRAM - A signal transmitted to an STA | 07-01-2010 |
20100183087 | RECEPTION DEVICE, TRANSMISSION DEVICE, AND ADAPTIVE TRANSMISSION RATE CONTROL METHOD - In a receiver | 07-22-2010 |
20100217888 | TRANSMISSION DEVICE, RECEPTION DEVICE, RATE CONTROL DEVICE, TRANSMISSION METHOD, AND RECEPTION METHOD | 08-26-2010 |
20110110235 | COMMUNICATION BANDWIDTH CONTROL DEVICE AND COMMUNICATION BANDWIDTH CONTROL METHOD - The present invention can prevent a fuzzy image, which is caused due to insufficient bandwidth when the bandwidth necessary for transmitting a content cannot be secured, to be displayed on a display device. When a relay apparatus ( | 05-12-2011 |
20120087255 | RELAY APPARATUS AND METHOD THEREFOR - The present invention provides a relay apparatus | 04-12-2012 |
20120147802 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - An energy controller ( | 06-14-2012 |
20120307702 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, TERMINAL APPARATUS, AND COMMUNICATION SYSTEM - Provided is a communication apparatus which allows multi-rate control causing less waste of communication band as compared to conventional, the communication apparatus according to the present invention includes: the wireless communication unit for performing wireless communication with the terminal apparatus; a transfer rate setting unit for setting a transfer rate; a beacon generation unit for generating a beacon which is a first control signal; and a control unit for causing the wireless communication unit to wirelessly transmit, for every predetermined period, the beacon, and, to cause the wireless communication unit to wirelessly transmit the beacon, the control unit causes the transfer rate setting unit to set a transfer rate different from the transfer rate previously used for the wireless transmission of the beacon, and causes the wireless communication unit to transmit the beacon to the terminal apparatus. | 12-06-2012 |
20130034039 | CONTROL DEVICE, RELAY METHOD, AND PROGRAM THEREFOR - A control device according to the present invention comprises a receiving unit which receives, in the network, a multi-address message transmitted from each of the terminal devices, a determining unit which determines whether or not the received multi-address message is to be translated into a unicast message to be transmitted to a specified terminal device, based on information contained in the multi-address message, the specified terminal device being included in the terminal devices, a translating unit which translates the multi-address message into the unicast message when the determining unit determines that the multi-address message is to be translated, and a transmitting unit which transmits the unicast message to the specified terminal device. | 02-07-2013 |
20130077558 | RELAY DEVICE, RECEIVING DEVICE, TRANSMITTING DEVICE, AND RELAY METHOD - A relay device according to the present invention includes: a receiving unit which receives a frame; a transmitting unit which transmits a frame; a frame determination unit which stores therein the first frame when the frame determination unit determines that the received frame is the first frame; a proxy ACK generation unit which generates a third frame which is a proxy frame of a second frame which is a frame to be transmitted from the receiving device, as a receipt acknowledgement to the first frame; and a communication control unit which: causes the transmitting unit to transmit the third frame; sets an extended active period in the inactive period subsequent to the active period; and transmits the first frame in the extended active period when the receiving unit does not receive the second frame within a predetermined period after reception of the first frame. | 03-28-2013 |
20130170426 | CONTROLLER, COMMUNICATION TERMINAL, AND WIRELESS COMMUNICATION SYSTEM - A control point device that reduces delay in a power-saving wireless network includes a normal data generating unit that generates 1 | 07-04-2013 |
20140179252 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device includes: a first antenna and a second antenna; a switch unit selecting the first antenna in a first term and the second antenna in a second term; a reception determination unit determining whether or not communication data contained in wireless signals received by the first antenna and the second antenna; and a storage unit storing association between each of communication terminals and one of the first antenna and the second antenna, in which the switch unit sets lengths of the first and second terms so that a ratio of the respective lengths of the first and second terms is equal to a ratio of the number of times the communication data from the communication terminals respectively associated with the first and second antennas and is determined to be successfully obtained. | 06-26-2014 |
20140315591 | COMMUNICATION TERMINAL DEVICE, COMMUNICATION SYSTEM, AND METHOD OF CONTROLLING COMMUNICATION TERMINAL DEVICE - A communication terminal device includes the following units. A detection unit detects a control signal instructing start of registration processing. A channel selection unit selects at random, from a plurality of frequency channels, the first frequency channel to be used in transmission of a beacon request when the control signal is detected. A scan control unit transmits the beacon request to the control devices by using the selected frequency channel. A receiving unit receives the beacon signal transmitted from each of the control devices. A list storage unit stores a predetermined parameter included in the beacon signal and the frequency channel in association with each other. A registration control unit transmits a registration request signal to the control device. | 10-23-2014 |
20150016564 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus which communicates data with plural other communication apparatuses by performing wireless communication includes: plural antennas; a communication level obtainment unit which obtains communication levels for the antennas obtained when the communication apparatus performed the wireless communication with the other communication apparatuses; a count unit which counts, for each of the antennas, the number of established communications that is the number of one or more of the other communication apparatuses which successfully established communication through the antenna; an antenna selection unit which selects, when the total number of antennas whose numbers of established communications are greatest is more than one, one of the antennas corresponding to a communication level that is highest among communication levels of plural antennas of the other communication apparatus corresponding to the lowest communication level; and a transmission unit which broadcasts predetermined data to the other communication apparatuses through the selected antenna. | 01-15-2015 |