  Millimeter wave (mmWave) communication systems can provide high data rates
but the system performance may degrade significantly due to mobile blockers and
the user's own body. A high frequency of interruptions and long duration of
blockage may degrade the quality of experience. For example, delays of more
than about 10ms cause nausea to VR viewers. Macro-diversity of base stations
(BSs) has been considered a promising solution where the user equipment (UE)
can handover to other available BSs, if the current serving BS gets blocked.
However, an analytical model for the frequency and duration of dynamic blockage
events in this setting is largely unknown. In this thesis, we consider an open
park-like scenario and obtain closed-form expressions for the blockage
probability, expected frequency and duration of blockage events using
stochastic geometry. Our results indicate that the minimum density of BS that
is required to satisfy the Quality of Service (QoS) requirements of AR/VR and
other low latency applications is largely driven by blockage events rather than
capacity requirements. Placing the BS at a greater height reduces the
likelihood of blockage. We present a closed-form expression for the BS
density-height trade-off that can be used for network planning.
