| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a packet-scheduling system and method that can separate quality, with respect to delay from quality (abort rate) with respect to packet loss and control them, independently of each other. SOLUTION: A terminal sets a band class requested by a user, an abort rate class, an arrival schedule time to a destination terminal, and a destination to packet header information. A packet header analysis/calculation section 17 of a router 1 calculates the remaining inter-node average delay time by each arrived packet, on the basis of the difference between a current time and the arrival schedule time and hop number up to the destination terminal. A quality decision/control section 18 commands the processing of aborting packets in a wait state, in the order of lower priority of the abort rate class when the node is in congestion, until the congestion is dissolved and decides and commands the arranged position of a queue for new packets, on the basis of the remaining inter-node average delay time. A scheduling section 20 conducts packet abort processing and the packet rearrangement by the command and transfers the packet in the order that they were arranged.</p> |
