  While network densification is considered an important solution to cater the
ever-increasing capacity demand, its effect on the handover (HO) rate is
overlooked. In dense 5G networks, HO delays may neutralize or even negate the
gains offered by network densification. Hence, user mobility imposes a
nontrivial challenge to harvest capacity gains via network densification. In
this paper, we propose a velocity-aware HO management scheme for two-tier
downlink cellular network to mitigate the HO effect on the foreseen
densification throughput gains. The proposed HO scheme sacrifices the best BS
connectivity, by skipping HO to some BSs along the user's trajectory, to
maintain longer connection durations and reduce HO rates. Furthermore, the
proposed scheme enables cooperative BS service and strongest interference
cancellation to compensate for skipping the best connectivity. To this end, we
consider different HO skipping scenarios and develop a velocity-aware
mathematical model, via stochastic geometry, to quantify the performance of the
proposed HO scheme in terms of the coverage probability and user throughput.
The results highlight the HO rate problem in dense cellular environments and
show the importance of the proposed HO schemes. Finally, the value of BS
cooperation along with handover skipping is quantified for different user
mobility profiles.
