Positioning Data-Rate Trade-off in mm-Wave Small Cells and Service Differentiation for 5G Networks

TL;DR

This paper investigates the trade-off between positioning accuracy and data-rate performance in mm-wave small cell networks, proposing a joint scheme and optimization strategies for service differentiation in 5G.

Contribution

It introduces a transmission scheme that jointly provides positioning and data communication, along with theoretical bounds and a scheme for optimizing beamwidth and power split for QoS.

Findings

Derived bounds on localization and data rate performance.

Upper bound on beam misalignment probability.

Proposed scheme for service differentiation and QoS management.

Abstract

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.