Apparatus and method for identifying transmission control protocol (TCP) packet loss

摘要

Provided is a method of identifying a transmission control protocol (TCP) packet loss, including transmitting at least one TCP data packet to a TCP receiver, estimating wireless channel status information using the TCP receiver by interaction between a TCP layer and a physical layer, and receiving an acknowledgement (ACK) packet including the estimated wireless channel status information from the TCP receiver.

主权项

1. An apparatus for identifying a transmission control protocol (TCP) packet loss, the apparatus comprising:
a receiving unit to receive at least one TCP data packet from a TCP sender; a measuring unit to measure a quality value of a current channel to update performance of TCP periodically, when the TCP data packet is received; a status estimating unit to estimate wireless channel status information by interaction between a TCP layer and a physical layer; a transmitting unit to transmit an acknowledgement (ACK) packet including the estimated wireless channel status information to the TCP sender; an event executing unit to execute a timeout event for a TCP connection when reception of the ACK packet fails within a predetermined period; a determining unit to determine the channel status by comparing a last stored channel status value to a predetermined critical value; and a re-transmitting unit to re-transmit the entire lost packet t when the last stored channel status value is greater than the predetermined critical value.