Forward error correction control on AAL 5: FEC-SSCS

ATM networks is realized as the future communication platform that accommodate a variety of communication services. A novel cell-level FEC (forward error correction) scheme at SSCS of AAL type 5 for error-free data transmission services is proposed and evaluated. In the proposed cell-level FEC scheme, both the length of user data (e.g. IP packet) and appended redundant data can be modified based on the sender´s local decision without any end-to-end parameter re-negotiation. The writing and reading order regarding an interleave matrix for the cell-level FEC algorithm are the same, in order to perform pipelining data transmission. The end-to-end data transmission latency and the amount of retransmission packets due to packet error at the receiver entity are evaluated by computer simulation with a correlated cell dropping process. Simulation results show that the benefits of cell-level FEC scheme for the error-free data transmission services, i.e., by use of a cell-level FEC scheme, the amount of retransmitted packets can be reduced, even if the average latency for end-to-end data transmission increases slightly