Abstract
5G communications system is on the evolution path with present focus on
enabling advanced features and new service capabilities. Multicast and
Broadcast Services (MBS) are being considered as one of the most
promising use cases of 5G. As a late entrant to 3rd Generation
Partnership Project (3GPP) 5G standards, MBS work item is presently
being developed over existing 5G framework, and is targeted to enhance
5G New Radio and 5G Core Network capabilities for a reliable, low
latency, resource efficient, and massive deployment of a wide array of
multicast and broadcast services. MBS development entails enhancements
for network and user equipment side on architectural, protocol and
transmission aspects in order to address a new set of multicast and
broadcast service requirements in 5G. In this article, we present an
introduction to MBS standardization and outline newly introduced
technical features, and their use cases.