Method for dynamically adjusting the number of retransmissions and NAKs in a communications system implementing TCP/IP

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), a method of increasing a number of NAKs to be transmitted in a transmission round to a sending device when a Radio Link Protocol (RLP) detects that an error in transmission has occurred, the method comprising the steps of:

• determining whether an RLP miss situation is occurring at the sending device;
• and
• if the RLP miss situation is occurring, increasing the number of NAKs sent in response to the error in transmission.

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), an apparatus for increasing a number of NAKs to be transmitted in a transmission round to a sending device when a Radio Link Protocol (RLP) detects that an error in transmission has occurred, the apparatus comprising:

• a receiving device having a processor operative to estimate a speed of transmission into the receiving device by measuring a number of bytes sent through RLP during a predetermined time frame;
• and if the speed is greater than a threshold and the transmission round is a first transmission round, increase the number of NAKs to be transmitted in response to the error in transmission.

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), an apparatus for increasing a number of NAKs transmitted in a transmission round to a sending device when a Radio Link Protocol (RLP) detects that an error in transmission has occurred, the apparatus comprising:

• a mobile station having a processor operative to determine a current TCP window size into the mobile station and a maximum TCP window size into the mobile station;
• and if the maximum TCP window size less the current TCP window size is less than a threshold, increase the number of NAKs to be transmitted in response to the error in transmission.

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), an apparatus for increasing a number of NAKs to be transmitted in a transmission round to a sending device when a Radio Link Protocol (RLP) detects that an error in transmission has occurred, the apparatus comprising:

• a receiving device having a processor operative to determine whether an RLP miss situation is occurring at the sending device;
• and if the RLP miss situation is occurring, increase the number of NAKs sent in response to the error in transmission.

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), a method of increasing a number of retransmissions to be transmitted to a receiving device in a transmission round when a sending device receives a Radio Link Protocol (RLP) NAK, the method comprising the steps of:

• estimating a speed of transmission out of the sending device by measuring a number of bytes sent through RLP during a predetermined time frame;
• and
• if the speed is greater than a first threshold and the transmission round is a first transmission round, increasing the number of retransmissions to be transmitted in response to the RLP NAK.

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), an apparatus for increasing a number of retransmissions to be transmitted to a receiving device in a transmission round when the apparatus receives a Radio Link Protocol (RLP) NAK, the apparatus comprising:

• a sending device having a processor operative to estimate a speed of transmission into the sending device by measuring a number of bytes sent through RLP during a predetermined time frame;
• and if the speed is greater than a threshold and the transmission round is a first transmission round, increase the number of retransmissions to be sent in response to the RLP NAK.

In a communications system implementing Transmission Control Protocol/Internet Protocol (TCP/IP), an apparatus for increasing a number of retransmissions to be transmitted in a transmission round to a receiving device when the apparatus receives a Radio Link Protocol (RLP) NAK, the apparatus comprising:

• a sending device having a processor operative to determine a maximum TCP window size of the sending device and a current TCP window size of the sending device;
• and if the maximum TCP window size less the current TCP window size is less than a threshold, increase the number of retransmissions to be transmitted in response to the RLP NAK.