Patent ID: 8917621

Claim:
A method for obtaining a feedback delay, the method comprising: obtaining, by a processing node, a target time elapsed in a process from when a remote radio end receives uplink data sent from a user end to when the remote radio end sends out feedback information responsive to the uplink data to the user end, wherein the feedback information responsive to the uplink data is fed back by the processing node to the remote radio end, and the feedback information is information about whether the processing node successfully receives the uplink data sent by the user end, wherein the target time is a sum of: delays of an intermediate radio frequency processing and a compression at the remote radio end, a transmission propagation delay of the uplink data from the remote radio end to the processing node, delays of a decompression of the uplink data received by the processing node, a protocol stack processing, a decoding processing, a downlink data compression and an encoding processing at the processing node, a transmission propagation delay of the downlink data from the processing node to the remote radio end, and delays of a decompression and an intermediate radio frequency processing at the remote radio end; calculating, by the processing node, a feedback delay by adding the target time and an air interface transmission propagation delay together, wherein the air interface transmission propagation delay is a transmission time of the uplink data from the user end to the remote radio end; and configuring, by the processing node, an uplink hybrid automatic repeat request (HARQ) ACK/NACK feedback interval to be the feedback delay.