| 摘要 |
<p>The present invention relates to a local retransmission scheme, which uses Transport Control Protocol (TCP)in an unreliable network. It provides reliable transmission for out-of-order TCP data packet in unreliable link. It recovers all non-congestion loss packets. It avoids incorrect adjustment of window size in TCP source end. It applies a TCP local retransmission scheme, which checks together link layer transfer sequence and TCP source delivery sequence. With inserting timestamp of local sequence number, which is in TCP data packet and TCP acknowledgement packet, together with acknowledgement number AN, it is defined whether a data packet is lost and retransmitted. Then, with explicit retransmission ERN feedback, a TCP source false action is avoided. Therefore the TCP performance of wireless network is greatly improved. <IMAGE></p> |
