Input: Data packets
Output: ACK or NACK pakcets
(1) Test Checksum.
(2) Implement RS encoding.
(3) If the result obtained is right
(4)     Send ACK packet
(5)   else if
(6)     Rejecte the packet
(7)     Send NACK packet
(8) end if
(9) Deliver the correct data packet to the upper layer.
Algorithm 3: Algorithm of ACFEC at receiver node.