Disturbance rejection properties for a 5G networked data flow delay controller

Radio transmission at millimeter wave carrier frequencies will be a central technology in the new 5G wireless systems that are in standardization. To obtain a sufficient coverage, multi-point transmission is needed to compensate for the severe radio shadowing that occurs at these frequencies. Incoming downlink data streams must then be split and sent on to the radio base stations over multiple data paths, often with different delay properties. This paper presents a new MIMO delay skew control algorithm that operates over these paths to secure simultaneous transmission over the corresponding wireless interfaces. This secures redundancy gains for ultra-reliable communication applications. The paper also presents an analysis of disturbance rejection and reference signal tracking properties, arriving at conditions that decouple these properties between the control channels. These conditions provide guidelines for network design.