Patent ID: 8085656

Claim:
An apparatus for improving transmission control protocol (TCP) performance using path recovery notification over a wireless network, the apparatus comprising: a path recovery manager which detects a mobile host recovered from a temporary disconnection state and then outputs a detection signal to notify the detection result; a path recovery notification manager which receives the detection signal and generates an acknowledgement (ACK) packet to inform a transmitting end that the mobile host is recovered; a first packet transceiver which transmits/receives the generated ACK packet and a data packet, wherein the path recovery notification manager generates the ACK packet including a TCP header, which contains a path recovery option field indicating a state of a disconnected path and a selective acknowledgement (SACK) option field that is set when a packet is partially lost, and wherein the path recovery option field comprises: a path recovery notification field which informs that the disconnected path is completely recovered; a partial packet loss notification field which informs that the packet is partially lost; and a no-packet-arrival field which informs that no packet is arrived.