Patent ID: 8413003

Claim:
A device comprising: a memory to store a plurality of instructions; and a processing unit to execute instructions in the memory to: determine whether power is limited in the device, determine whether the device is using a minimum usable enhanced dedicated channel, E-DCH, transport format combination, ETFC, receive consecutive negative acknowledgments (NACKs), determine whether the number of consecutive NACKs is greater than a predefined number, measure a downlink channel quality, determine whether the measured downlink channel quality is less than a predefined threshold, and trigger autonomous retransmission, where a number of retransmissions are sent consecutively without waiting for receipt of a negative acknowledgement before starting the next retransmission, when power is limited in the device, when the device is using the minimum usable ETFC, and when one of: the number of consecutive NACKs is greater than the predefined number, or the measured downlink channel quality is less than the predefined threshold, the processing unit further adapted to execute instructions in the memory to: receive, from another device, a number of retransmissions for the autonomous retransmission, where the other device determines a signal-to-interference ratio required for a transport format (SIRREQ), measures a SIR (SIRMEAS) associated with the other device, and calculates the number of retransmissions based on the SIRREQ and the SIRMEAS.