Experimental Evaluation of Adaptive SR-SW-ARQ/FEC Scheme for Ultra Low-Latency Mobile Networks

In order to realize ultra low-latency mobile networks whose target is a unidirectional end-to-end latency of 10 milliseconds per IP packet, we proposed an adaptive error recovery scheme. The simulation results, which verified the effectiveness of the proposed scheme, need to be complemented by more realistic testing. Hence, we have implemented the proposed scheme using field programmable gate array (FPGA) and developed a testbed. The experimental evaluation results obtained using the testbed show similar IP packet error rate (IP PER) performances to those of the simulation results. Moreover, the IP PER performances with an end-to-end latency limitation (including transmission latency and processing latency) are firstly evaluated using the testbed. The experimental results verify the effectiveness of the proposed adaptive error recovery scheme using the testbed and indicate the possibility of realizing ultra low-latency mobile networks using the proposed error recovery scheme.