  We analyze a millimeter wave network, deployed along the streets of a city,
in terms of positioning and downlink data-rate performance, respectively.
First, we present a transmission scheme where the base stations provide jointly
positioning and data-communication functionalities. Accordingly, we study the
trade-off between the localization and the data rate performance based on
theoretical bounds. Then, we obtain an upper bound on the probability of beam
misalignment based on the derived localization error bound. Finally, we
prescribe the network operator a scheme to select the beamwidth and the power
splitting factor between the localization and communication functions to
address different quality of service requirements, while limiting cellular
outage.
