  6G will be characterized by extreme use cases, not only for communication,
but also for localization, and sensing. The use cases can be directly mapped to
requirements in terms of standard key performance indicators (KPIs), such as
data rate, latency, or localization accuracy. The goal of this paper is to go
one step further and map these standard KPIs to requirements on signals, on
hardware architectures, and on deployments. Based on this, system solutions can
be identified that can support several use cases simultaneously. Since there
are several ways to meet the KPIs, there is no unique solution and preferable
configurations will be discussed.
