信息技术.移动式多路广播通信:框架

[中文适用范围]： 本建议书|国际标准描述了移动组播通信(MMC)，可用于在基于IP的无线移动网络以及有线固定网络中支持各种多媒体组播服务。MMC针对移动通信网络中的实时、一对多组播服务和应用程序。这意味着MMC专注于组播服务而非广播服务，并且只有经过身份验证的用户才允许加入组播会话。MMC还考虑了一对多组播会话，其中只允许单个组播发送者参与会话，而不是多对多组播服务。此外，MMC针对实时组播会话而非可靠组播会话；组播数据的及时交付被视为关键因素。 本建议书|国际标准规定了作为MMC标准一部分的MMC框架，描述了MMC的框架和功能架构。基于此框架，MMC项目将在两个部分中开发两个MMC协议：基于原生IP组播网络的协议和基于覆盖组播网络的协议。 [外文原描述]： ISO/IEC 24793 specifies mobile multicast communications (MMC), which can be used to support a variety of multimedia multicasting services in IP-based wireless mobile networks as well as wired fixed networks. MMC targets real-time, one-to-many multicast services and applications over mobile communications networks. This implies that MMC focuses on multicast services rather than broadcast services, and that only authenticated users could be allowed in the multicast session. MMC also considers the one-to-many multicast session wherein a single multicast sender is allowed in the session rather than many-to-many multicast services. In addition, MMC is targeted in the real-time multicast session rather than the reliable multicast session; the timely delivery of multicast data is considered a key factor. ISO/IEC 24793-1:2010 specifies the MMC framework as part of the MMC standard describing the framework and functional architecture of MMC. Based on this framework, the two protocols for MMC will be developed in two parts of the MMC project: protocol over native IP multicast networks and protocol over overlay multicast networks.