Study on evolution of the IP Multimedia Subsystem (IMS) multimedia telephony service
The present document studies new scenarios (e.g. AR/VR communication) for IMS Multimedia Telephony service, identifies potential service requirements, and identifies additional potential requirements on 5G system.
This document also does a gap analysis to existing requirements in 3GPP to identify potential requirements for introduction into 3GPP.
NOTE: Use cases in this document have references to those already specified in 3GPP TR26.918 [2] and TR26.928[3]. This allows an easier breakdown of these use cases to existing features and potential new requirements as well as relevant performance figures. New use cases in this TR are highlighted if they are not covered in 3GPP SA4 work.