  We use random linear network coding (RLNC) based scheme for multipath
communication in the presence of lossy links with different delay
characteristics to obtain ultra-reliability and low latency. A sliding window
version of RLNC is proposed where the coded packets are generated using packets
in a window size and are inserted among systematic packets in different paths.
The packets are scheduled in the paths in a round robin fashion proportional to
the data rates. We use finite encoding and decoding window size and do not rely
on feedback for closing the sliding window, unlike the previous work. Our
implementation of two paths with LTE and WiFi characteristics shows that the
proposed sliding window scheme achieves better latency compared to the block
RLNC code. It is also shown that the proposed scheme achieves low latency
communication through multiple paths compared to the individual paths for
bursty traffic by translating the throughput on both the paths into latency
gain.
