ARQ is appropriate if the communication channel has varying or unknown capacity, such as is the case on the Internet. However, ARQ requires the availability of a back channel, results in possibly increased latency due to retransmissions, and requires the maintenance of buffers and timers for retransmissions, which in the case of network congestion can put a strain on the server and overall network capacity.A. J. McAuley, Reliable Broadband Communication Using a Burst Erasure Correcting Code, ACM SIGCOMM, 1990.
arq is appropriate if the communication channel has varying or unknown capacity such as is the case on the internet however arq requires the availability of a back channel results in possibly increased latency due to retransmissions and requires the maintenance of buffers and timers for retransmissions which in the case of network congestion can put a strain on the server and overall network capacitya j mcauley reliable broadband communication using a burst erasure correcting code acm sigcomm 1990