Traffic Navigation & Relay: System-Wide Load Balancing Method for Heterogeneous Network Using Route Direction and Packets Relay

We propose the traffic navigation & relay to shorten transmission delay time of the conventional delayed offloading method which is a load balancing scheme of heterogeneous wireless networks. In the original traffic navigation which is a kind of delayed offloading method, the sender user equipment (UE) moves the route that the UE achieves the highest throughput, but transmission delay time is one of the main issues. The proposed traffic navigation & relay can reduce transmission delay time to entrust the packets to other UEs (relayer UEs) if the relayer UEs are able to reach the small cell faster than the sender UE. It was evaluated by computer simulation that the proposed traffic navigation & relay improves the UE’s cumulative distribution function (CDF) of transmission completion time by 42 percentage points at 600 s from the conventional method when the density is 125 UEs/km2.