The distributed core network is a core network, which builds on network functional units collaborating in a distributed manner to provide the network functions of control plane, user plane, and data plane. Fixed, mobile and satellite convergence (FMSC) is the capability that provides services and applications to end users regardless of the fixed, mobile or satellite access technologies being used. This Recommendation specifies the general considerations, requirements, network function enhancements, procedures and security considerations of distributed core network in FMSC network, in the context of IMT-2020 and beyond.