QoS – Quality of Service – is such a wide topic. For 4G, having a QCI – QoS Class Indicator – setting that will ensure a CIR will help. This will be a part of a higher (e.g. Gold, Premium, etc..) segmented Package. A combination of a PCEF_PCRF / 3GPP OCS / Sy is a good starting point for a segmented QoS.
VBR/ Wallis Dudhnath