Ensuring low latency in a passive optical network (PON) environment for a mobile fronthaul use case is critical and raises a number of challenges. To address those types of challenges, techniques are presented herein that support, among other things, the coordination between a PON scheduler and a Long-Term Evolution (LTE) or Third Generation Partnership Project (3GPP) Fifth Generation (5G) scheduler where the expected traffic in an uplink direction is intimated in advance to the PON scheduler. Such advance knowledge of a bandwidth scheduling requirement in an upstream direction eliminates, for example, the serialization of scheduler latency. Aspects of the techniques presented herein encompass, among other things, the development of a phase relationship between a PON superframe counter (SFC) and a time service, the determination of a bandwidth demand, the exchange of developed information (employing, for example, a variable-sized extension header or a fixed-sized custom header and vendor-specific message types), the creation of a mapping between a transmission container (TCONT) and a flow identifier, etc.
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Anand, Prashant; Kayamkulangara, Sudhir; Kumar, Manoj; S, Raghupathi; and Sandhir, Ajay, "LOW LATENCY 5G/LTE MOBILE FRONTHAUL TRAFFIC IN TDMPON/XGS-PON NETWORKS", Technical Disclosure Commons, (June 10, 2021)