The inventive methods and apparatus disclosed herein allocate and assign uplink reference signals to cells within a cell cluster based on the type of cell. Tensile yarns can be included as strain-relief components, but can be relatively loosely packed in order to inhibit bend-induced attenuation. The micro-components are disposed in sockets formed at pre-determined locations in a first dielectric substrate so that they are adjacent to electrodes imprinted in the first substrate.