  Recently, a mmWave-based access and backhaul integration HetNetsarchitecture
(mABHetNets) has been envisioned to provide the high link capacity in both
access and backhaul links. In mABHetNets, the access link and the backhaul link
will share the same mm-wave spectral resources to serve cellular users as well
as to maintain the backhaul capacity of the SBSs. However, a large spectrum
bandwidth are occupied by the backhaul link to maintain the backhaul link
capacity. Up to 50\% mmWave spectrum resource will be used in backhaul link to
satisfy the high speed data traffic. Such "\emph{spectrum occupation}" of
backhaul link has restricted network performance to achieve a better possible
improvement. To overcome spectrum occupation problem in the existing
mABHetNets, involving caches in the mABHetNets brings a opportunity. When the
backhaul traffic is offloaded by caching popular fils in the SBSs and the
corresponding mmWave spectrum can be transfered to the access link by the
bandwidth partition. Then with more spectrum for access link, both the network
throughout and the coverage ability are increased significantly. However, the
caching power consumption will be increased and the EE will be decreased.
Therefore, we analyze the througput and EE in mABHetNets by stochastic geometry
tool. Extensive numerical and simulations results are carried out to validate
our work.
