PCEP Extensions for LSP scheduling with stateful PCE

This document proposes a set of extensions needed to the stateful Path Computation Element (PCE) communication Protocol (PCEP), so as to enable Labeled Switched Path (LSP) scheduling for path computation and LSP setup/deletion based on the actual network resource usage duration of a traffic service in a centralized network environment as stated in [I.D.ietf-teas-scheduled-resources].