| Patent application number | Description | Published |
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| 20090285211 | COMMUNICATION METHOD AND RECEIVING TERMINAL - It is an object of the present invention to receive/play a streaming immediately after a switching not to disconnect it when a terminal for receiving the streaming is switched from a first receiving terminal to a second receiving terminal | 11-19-2009 |
| 20100031109 | RECEIVING TERMINAL AND RECEIVING METHOD - A receiving terminal is provided that prevents a load on a network near a receiving terminal from increasing when a retransmission request is made to a plurality of other terminals, and enables the probability of being able to compensate for a lost packet by means of a retransmission packet to be increased. In a receiving terminal that transmits a retransmission request for compensating for a lost packet lost in a network, a measurement section measures a time period corresponding to a distance in the network between the receiving terminal and a plurality of receiving terminals, a calculation section calculates for each of the receiving terminals a float (spare time period) found by subtracting the current time and a time period measured by the measurement section from a playback time at which a retransmitted packet is played back, and a decision section decides retransmission request transmission timing and a retransmission request transmission destination for each of the receiving terminals based on the calculated floats. | 02-04-2010 |
| 20100074113 | FLOW CONTROL METHOD, TRANSMITTING TERMINAL DEVICE USED IN SAME, RECEIVING TERMINAL DEVICE AND PACKET TRANSFER SYSTEM - It is an object to provide a flow control method in which a packet round trip time is not excessively calculated out and its performance is not unnecessarily deteriorated even at the time of continuously connected packet transfers through relays of a plurality of receiving terminal devices. This method is directed to a flow control method in which the delivery of packets are carried out through relays of a plurality of receiving terminal devices. The method is comprised of steps (S | 03-25-2010 |
| 20100157795 | TRANSMITTING APPARATUS AND TRANSMISSION RATE CONTROL METHOD - In a communication of explicit multicast system used in SICC, the frequency of variation of the transmission rate is reduced to achieve a multimedia data transmission exhibiting a high quality. An available bandwidth estimating part ( | 06-24-2010 |
| 20100158000 | TRANSMITTING APPARATUS AND TRANSMITTING METHOD - To transmit multimedia data in such a manner that is adaptive to the transmission, capability of a receiving apparatus and/or to the congestion state of a network. In a transmitting apparatus ( | 06-24-2010 |
| 20100183012 | DATA TRANSMITTING APPARATUS AND DATA RETRANSMITTING METHOD - A data transmitting apparatus is provided for making it possible to send out a retransmitting packet at early timing even in the case where a delivery tree structure is unclear. A transmitting terminal device ( | 07-22-2010 |
| Patent application number | Description | Published |
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| 20090059924 | PACKET TRANSMITTING METHOD, RELAY NODE AND RECEIVING NODE - A packet transmitting method wherein an explicit multicast packet can be transmitted with the consumption of communication bands of broadcast media being suppressed. According to this method, a link level multicast is used to transmit an explicit multicast packet only to next hop nodes that, even when receiving the explicit multicast packet through the link level multicast, will not output the same packet to the broadcast media, while a unicast is used to transmit an explicit multicast packet to the other next hop nodes. | 03-05-2009 |
| 20090080352 | PACKET RELAY METHOD AND HOME AGENT - The present invention is to reduce consumption of band resources and delay in communication as a whole. A functional configuration of a home agent according to the present invention will be described as follows. A Mobile IP protocol process portion | 03-26-2009 |
| 20090116482 | MULTICAST DISTRIBUTION DEVICE AND MULTICAST DISTRIBUTION METHOD - Provided is a multicast distribution device for transmitting a packet in which a reception node can easily perform signal synchronization between a plurality of hierarchized data. The multicast distribution device ( | 05-07-2009 |
| 20090245252 | COMMUNICATION TERMINAL AND RETRANSMISSION REQUEST METHOD - A multicast communication system in which a receiving node which has detected a packet loss can make a retransmission request without applying a high load to a transmitting node, all receiving nodes, and the band of the entire network. The transmitting node transmits an explicit multicast data packet including an address list including a plurality of destination addresses and a bitmap indicating whether the data packet has been delivered to the respective destination addresses, to a plurality of the receiving nodes. The receiving node which has detected the packet loss checks an address list and bitmap of another data packet received and selects a receiving node to which the another data packet has been delivered as a retransmission requester. The receiving node which has detected the packet loss creates a unicast retransmission request packet with the selected receiving node as the destination and transmits it to the selected receiving node. | 10-01-2009 |
| 20110110260 | STREAMING COMMUNICATION DEVICE, STREAMING COMMUNICATION METHOD, AND STREAMING COMMUNICATION SYSTEM - A streaming communication device which accurately estimates a packet which will be lost in the future. A streaming communication device which transmits or receives a stream via a router over a packet-switched network, the streaming communication device including: an accumulating unit ( | 05-12-2011 |
| 20110170417 | TRANSMISSION RATE CONTROL DEVICE AND TRANSMISSION RATE CONTROL METHOD - A first communication terminal which communicates with a second communication terminal through a best effort network includes: a communication history storage unit in which a communication history is stored for each of the communication terminals; and a round-trip delay time calculation unit which calculates a round-trip delay time that occurs in a communication with the second communication terminal. The second communication terminal includes a target loss event rate calculation unit which calculates a target loss event rate that is to be set by the first communication terminal in a communication with the second communication terminal, based on a past transmission rate that is recorded in the communication history and has been realized in the communication with the second communication terminal, and on the round-trip delay time that occurs in the communication with the second communication terminal. The first communication terminal changes a transmission rate which is set at the present time to a target transmission rate which is calculated based on the target loss event rate and the round-trip delay time. According to the transmission rate control device, when it is determined that the bandwidth that is estimated to be available in a communication through the network is rapidly changed, the transmission rate can be changed to a target bit rate in a short time period. | 07-14-2011 |
