The fifth generation of cellular technologies, 5G, promises to deliver a wide variety of services. However, the first release of 5G (3GPP Rel-15) did not consider multicast capabilities in the 5G system including both access and core networks. This article fills the gap by describing solutions for 5G mobile core network architecture incorporating multicast and broadcast capabilities. Two innovative solutions to provision multicast and broadcast, based on 3GPP Rel-15 arechitecture, have been proposed and analyzed. One is 5G architecture friendly with low imprint over Rel-15 while the other is based on the evolution of LTE Broadcast architecture. The architectural solutions feature two new main transmission modes: transparent multicast transport and point-to-multipoint services. The former enables the 5G network as a network pipe supporting multicast traffic providing a cost-effective delivery mode for multimedia while the latter enables multicast and broadcast as a service. The paper also presents a convergent fixed wireline and mobile network architecture based on the proposed mobile network architecture altenatives. The proposed architecture alternatives are suitable for different verticals and applications such as Digital Terrestrial Television, Public Warning, Internet of Things, V2X (vehicle to everything) and mission critical communications (MCC).

中文翻译：

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在融合固定和移动网络的 5G 核心网中启用组播和广播

第五代蜂窝技术 5G 有望提供多种服务。但是，5G 的第一个版本（3GPP Rel-15）没有考虑 5G 系统中的组播能力，包括接入网和核心网。本文通过描述包含多播和广播功能的 5G 移动核心网络架构解决方案填补了这一空白。已经提出并分析了两种基于 3GPP Rel-15 架构的用于提供组播和广播的创新解决方案。一种是 5G 架构友好，在 Rel-15 上印记较低，而另一种是基于 LTE 广播架构的演进。该架构解决方案具有两种新的主要传输模式：透明组播传输和点对多点服务。前者使 5G 网络成为支持组播流量的网络管道，为多媒体提供经济高效的交付模式，而后者则使组播和广播即服务成为可能。本文还提出了一种基于所提出的移动网络架构替代方案的融合固定有线和移动网络架构。提议的架构替代方案适用于不同的垂直领域和应用，例如数字地面电视、公共警报、物联网、V2X（车辆到一切）和关键任务通信 (MCC)。本文还提出了一种基于所提出的移动网络架构替代方案的融合固定有线和移动网络架构。提议的架构替代方案适用于不同的垂直领域和应用，例如数字地面电视、公共警报、物联网、V2X（车辆到一切）和关键任务通信 (MCC)。本文还提出了一种基于所提出的移动网络架构替代方案的融合固定有线和移动网络架构。提议的架构替代方案适用于不同的垂直领域和应用，例如数字地面电视、公共警报、物联网、V2X（车辆到一切）和关键任务通信 (MCC)。