Abstract
5G Ultra-Dense Networks (UDNs) will involve massive deployment of small cells which in turn form complex backhaul network. This backhaul network must be energy efficient for the 5G UDN network to be green. V-band and E-band mmWave technologies are among the wireless backhaul solutions tipped for 5G UDN. In this paper, we have compared the performance of the two backhaul solutions to determine which is more energy efficient for 5G UDN. We first formulated the problem to minimize power, then proposed an algorithm to solve the problem. This was then simulated using Network simulator 3.The first scenario made use of V-band mmWave while thesecond was E-band mmWave. The performance metricsused were power consumption and energy efficiency againstthe normalized hourly traffic profile. The performances ofthe two solutions were compared. The results revealed thatE-band mmWave outperformed V-band mmWave inbackhauling traffic in 5G UDN. It can be concluded that E-band green backhaul solution is recommended over V-bandmmWave for 5G UDN.
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