  The small cell market has been growing. To backhaul wireless traffic from
small cells, the mobile network operators (MNOs) are looking into economically
viable solutions, specifically the hybrid fiber coaxial networks (HFC), in
addition to the traditional choice of fiber. When the latencies from both the
wireless and the HFC networks are added together, it can result in noticeable
end-to-end system latency, particularly under network congestion. If the two
networks could somehow coordinate with each other, it would be possible to
decrease the total system latency and increase system performance. In this
paper, we propose a method to improve upstream user-to-mobile core latency by
coordinating the LTE and HFC scheduling. The method reduces the impact on
system latency from the HFC network's request-grant-data loop, which is the
main contributor of backhaul upstream latency. Through simulation, we show that
coordinated scheduling improves overall system latency.
