This paper is organized as follows. Section 1 explains the rational for splitting the upstream scheduling between the core and the RPD with a remote RPD US scheduler. Section 2 defines the DOCSIS upstream service model and the remote upstream scheduler service categories. Section 3 examines the split upstream scheduling impact on R-UEPI, and Section 4 examines the impact on R-DEPI. Section 5 discusses the remote US scheduler APIs using the data modeling approach. Section 6 explains how scheduling locality optimization may be applied to improve latency and efficiency for a R-PHY system as a whole. Finally, the paper will be concluded by summarizing the study highlights.