Patent application number | Description | Published |
20110312373 | Radio communications apparatus and method - A radio communications apparatus having multiple radio equipment units is disclosed. The radio communications apparatus includes a radio equipment selecting unit which selects one of the radio equipment units based on a received quality in each of the radio equipment units when transferring to a power saving state; and a radio equipment control unit which operates the radio equipment unit selected by the radio equipment selecting unit and stops a radio equipment unit other than the selected radio equipment unit. | 12-22-2011 |
20120063342 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus transmits a packet that includes a destination address, a source address, and a frame body over a wireless network. The wireless communication apparatus computes a first calculation value for use in detecting packet falsification based on a destination address, a source address, and a frame body by using a predetermined computation method, and stores the first calculation value that is associated with the destination address. When a second packet is to be transmitted to a same destination address that is the same as the destination address stored in the storage unit, the wireless communication apparatus computes a second calculation value using the first calculation value stored in the storage unit and the frame body contained in the second packet by using the predetermined computation method. | 03-15-2012 |
20120063394 | ACCESS POINT, COMMUNICATION CONTROL METHOD AND RECORDING MEDIUM - An access point for assigning a radio resource to a radio communication apparatus based on admission control, the access point including: a state determination unit configured to determine whether there is a first radio communication apparatus that is in a sleep state by a power saving function; and an assignment unit configured to temporarily assign a radio resource assigned to the first radio communication apparatus to a second radio communication apparatus when the state determination unit determines that there is the first radio communication apparatus. | 03-15-2012 |
20120314639 | RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD - A radio communication device includes: a beacon cycle determination unit configured to determine a beacon cycle for transmitting a beacon based on a sum of a number of time slots that is included in a beacon transmitted by another radio communication device and that the other radio communication device requests for transmitting data and a number of time slots to be requested by the radio communication device for transmitting data; and a packet transmit and receive control unit configured to control the radio communication device, according to the beacon cycle determined by the beacon cycle determination unit, to transmit a packet at a time slot and to receive a packet from another radio communication device at a time slot different from the time slot for transmission. | 12-13-2012 |
20130250836 | WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION SYSTEM - In the invention, wireless communication devices transmit beacon frames in an order in compliance with a CSMA/CA protocol. A wireless communication device as a transmitting station of a multicast frame uses one of the beacon frames to notify wireless communication devices as receiving stations of the multicast frame that an ACK frame is to be transmitted when the multicast frame is received. On receipt of the multicast frame, the wireless communication devices as the receiving stations transmit ACK frames in order of transmitting the beacon frames at SIFS intervals. | 09-26-2013 |
20130250837 | WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION SYSTEM - In a wireless communication method, a wireless communication device on a transmission side transmits a multicast frame to a plurality of wireless communication devices on a reception side in a wireless communication network including the wireless communication devices. The wireless communication method includes: transmitting beacon frames in order by the wireless communication devices; burst-transferring a plurality of multicast frames by the wireless communication device on the transmission side; and transmitting a response frame containing information that indicates whether each of the multicast frames is successfully received, in the order in which the beacon frames are transmitted, by the wireless communication devices on the reception side. | 09-26-2013 |
20150071281 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND WIRELESS COMMUNICATION METHOD - In a wireless communication system, a wireless transmitter generates a TS packet that includes a PCR value based on a timer value for a time preceding an offset time from start time of a PCR time slot and transfers a wireless frame that includes the TS packet with the PCR value at start time of the PCR time slot. The wireless receiver receives the wireless frame that includes the TS packet with the PCR value at the PCR time slot, measures propagation time of the wireless frame between the start time of the PCR time slot and time when the wireless frame that includes the TS packet with the PCR value is received, obtains sum of the offset time and the propagation time as delay time of the PCR value, and adjusts its timer value based on the PCR value acquired from the wireless frame and the obtained delay time. | 03-12-2015 |
20150146101 | COMMUNICATION APPARATUS, SIGNAL PROCESSING METHOD, AND RECORDING MEDIUM STORING A SIGNAL PROCESSING PROGRAM - In a communication system incorporating a communication apparatus that transfers/receives a TS packet using MPEG-2-TS to synchronize a video signal with an audio signal includes a communication circuit to pad the TS packet with a null frame to reach a prescribed frame size when storing the TS packet that includes a PCR value in a frame. In the communication apparatus, the communication circuit deletes the null frame in the TS packet when receiving the TS packet. The communication apparatus further includes an encoder that outputs a PCR report signal that indicates that the generated TS packet includes the PCR value to the communication circuit. In the communication apparatus, the size of the frame is set in multiples of the size of the TS packet. The communication apparatus further includes an input device to configure whether the TS packet is padded automatically or manually. | 05-28-2015 |