Patent ID: 7443795

Claim:
A data transmission method, comprising: comparing a number of data blocks to be transmitted to a number of allocated time slots that are in a radio frame until a stall state entrance of a transmit window occurs; predicting the stall state entrance of a transmit window before the stall state entrance occurs based on the comparison; setting a field of a data block to a value corresponding to a first stall state alarm signal based on the prediction; transmitting the data block containing said value to a network before the stall state entrance occurs, said value indicative of the predicted stall state; and controlling a data transmission based on whether a feedback signal is received from the network in response to the first stall state alarm signal, wherein said controlling further comprises: transmitting a data block with a value corresponding to a second stall state alarm signal before the stall state entrance occurs; and controlling the data transmission based on whether a feedback signal is received from the network in response to the second stall state alarm signal, wherein the data block containing said value corresponding to the second stall state alarm signal is transmitted when no message is received from the network in response to the data block transmitted with the value corresponding to the first stall state alarm signal.