Method and apparatus for controlling send buffer of transmission control protocol in communication system

A method for controlling a send buffer of a transmission control protocol (TCP) in a communication system, the method comprising:

• if a normal response signal or a TCP acknowledgment is to be transmitted to an opposite device, determining a current operation in a congestion control scheme according to the TCP based on a round-trip time (RTT) value;
• determining a size of a congestion window based on a data packet received from the opposite device;
• identifying a current RTT value and a minimum RTT value in the TCP;
• and
• adjusting a size of a window to be transmitted to the opposite device based on at least one of the current operation, the size of the congestion window, the current RTT value, and the minimum RTT value.

An apparatus for controlling a send buffer of a transmission control protocol (TCP) in a communication system, the apparatus comprising:

• a transceiver configured to transmit and receive data packets;
• and
• a controller configured to:
• identify a current round-trip time (RTT) value and a minimum RTT value in the TCP, and
• adjust a size of the send buffer based on at least one of a current operation, the current RTT value, and the minimum RTT value in a congestion control scheme according to the TCP.

An apparatus for controlling a send buffer of a transmission control protocol (TCP) in a communication system, the apparatus comprising:

• a transceiver configured to transmit and receive data packets;
• and
• a processor configured to:
• if a normal response signal or a TCP acknowledgment is to be transmitted to an opposite device, determine a current operation in a congestion control scheme according to the TCP based on a round-trip time (RTT) value,
• determine a size of a congestion window based on a data packet received from the opposite device,
• identify a current RTT value and a minimum RTT value in the TCP, and
• adjust a size of a window to be transmitted to the opposite device based on at least one of the current operation, the size of the congestion window, the current RTT value, and the minimum RTT value.