VI. CONCLUSION
5G networks are expected to satisfy rapid wireless traffic growth. Massive MIMO, millimeter
wave communications and small cell technologies are presented to achieve Gigabit transmission
rate in 5G networks. In this paper, we study how to promote 5G wireless backhaul networks
in high throughput and low energy consumption ways. Two typical small cell scenarios are
configured to analyze the wireless backhaul traffic in future 5G networks. Furthermore, the
energy efficiency of wireless backhaul networks is compared by two typical small cell scenarios.
Numerical results imply that the distribution solution has higher energy efficiency than the
central solution in 5G wireless backhual networks. However, a veritable challenge would indeed
emerge if the new distribution network architecture is adopted in the future 5G wireless backhaul
networks.