| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To surely retransmit a lost packet in a short period of time when a packet loss occurs in a radio link. <P>SOLUTION: When a packet loss is detected, an intermediate node 31 simultaneously transmits a retransmission request message for requesting the retransmission of the lost packet to adjacent intermediate nodes. On the other hand, when a retransmission request message transmitted from another intermediate node is received, the intermediate node 31 retrieves a packet requested to be retransmitted from a packet stored in a receiving buffer 302 and retransmits the packet to the intermediate node that has transmitted the retransmission request message from a packet retransmitting part 308. The intermediate node that has transmitted the retransmission request message receives the retransmitted packet, stores the packet in a receiving buffer 302 and simultaneously transmits a retransmission completion message for notifying that the retransmitted packet is received to adjacent intermediate nodes. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
