  The multi-tiered concept of Internet of Things (IoT) devices, cloudlets and
clouds is facilitating a user-centric IoT. However, in such three tier network,
it is still desirable to investigate efficient strategies to offer the
computing, storage and communications resources to the users. To this end, this
paper proposes a new hierarchical model by introducing the concept of field,
shallow, and deep cloudlets where the cloudlet tier itself is designed in three
hierarchical levels based on the principle of LTE-Advanced backhaul network.
Accordingly, we explore a two time scale approach in which the computing
resources are offered in an auction-based profit maximization manner and then
the communications resources are allocated to satisfy the users' QoS.
