Patent ID: 8291276
Filing Date: 2012-10-16
Classification: H04L

Abstract:
1. A method of interacting between an automatic repeat request (ARQ) and a hybrid automatic repeat request (HARQ) in a system with a long roundtrip delay, the method comprising: determining, by a first layer unit, whether a packet transmission of a packet succeeds or fails, using first feedback information received in response to the packet transmission; transferring, by a second layer unit, a packet from a transmission window to a waiting window, when the first layer unit determines that the packet transmission of the packet succeeds; transferring, by the second layer unit, the packet from the transmission window to a retransmission buffer to retransmit the packet, when the first layer unit determines that the packet transmission of the packet fails; and receiving, by the second layer unit, second feedback information including the retransmitted packet, and determining a process of the retransmitted packet based on the second feedback information, wherein the first layer unit performs the HARQ and the second layer unit performs the ARQ.