Patent ID: 8132068

Claim:
A method for enhancing data transmission efficiency in a wireless communications system comprising: using a first receiving window and a second receiving window in a receiver side of an entity operating in Acknowledgement Mode (AM); wherein the first receiving window provides a function of Automatic Retransmission Request (ARQ) and the second receiving window is utilized for detecting missing Sequence Numbers (SNs); wherein the first receiving window, is a Push Type sliding window, which is advanced only when a packet corresponding to a lower edge of the Push Type sliding window is received successfully or is informed to be discarded, and a packet with an SN outside the Push Type sliding window is discarded; wherein the second receiving window is a Pull Type sliding window, which is advanced when a packet with a first SN inside the first receiving window and outside the Pull Type sliding window is received; wherein the first SN is set to be an updated upper edge of the Pull Type window; and wherein if a second SN in the Pull Type sliding window that is not received is moved below the lower edge of the Pull Type sliding window due to the advancement of the Pull Type sliding window, the second SN is detected as a missing SN.