  Frequency Range 2 (FR2) has become an integral part of 5G networks to fulfill
the ever increasing demand for user data throughput. However, radio signals in
FR2 experience high path and diffraction loss in mobile environments. To
address this issue, multi-panel user equipment (MPUE) is adopted for FR2
whereby multiple antenna panels are placed on the UE body to leverage gains
from antenna directivity. In contrast to traditional UEs with isotropic
radiation patterns, signal measurements of cells in the network may not be
available on all panels simultaneously for MPUE, which may result in outdated
signal measurements that affect the reliability of mobility decisions. In this
paper, we investigate the mobility performance of two different MPUE schemes
following different paradigms for signal measurement and compare their
performance with traditional UEs. This performance evaluation is based in
multi-beam 5G networks operating in FR2 where there are multiple simultaneously
active beams per cell to realize the high throughput requirements. Furthermore,
an in-depth analysis of the mobility performance is carried out to determine
the best mobility parameter combinations for the different MPUE schemes.
Results have shown that both MPUE schemes offer considerable mobility
performance gains as compared to traditional UEs. Moreover, it is seen that the
MPUE schemes require different mobility parameter settings for the best
mobility performance.
