本标准规定了内容交付（CD）功能实体（FE）、服务路由（SR）FE、服务策略决策（SPD）FE、服务发现和协商（SDN）FE以及上下文信息管理（CIM）FE之间的协议，以支持下一代服务覆盖网络中的高级内容交付能力。内容交付功能旨在支持内容发现、内容缓存和存储管理、内容交付控制和传输QoS控制，包括上下文感知和动态自适应的内容交付操作。

This standard specifies protocols among content delivery (CD) functional entity (FE), service routing (SR) FE, service policy decision (SPD) FE, service discovery and negotiation (SDN) FE, and context information management (CIM) FE to support advanced content delivery capability in next generation service overlay networks. The content delivery capability aims to support content discovery, content cache and storage management, content delivery control, and transport QoS control including context-aware and dynamically adaptive content delivery operations.