先进数据通信的普及为国家安全/应急准备（NS/EP）通信带来了新的机遇和挑战。扩展的数据能力增强了服务用户执行NS/EP任务的能力。同时，高数据流量对服务提供商的网络提出了巨大的需求，当这些网络因拥塞和/或自然或人为灾害而受损时，可能会妨碍其支持提供的流量负载的能力。NS/EP数据传输服务旨在满足这些需求。本技术报告（TR）针对3GPP TS 22中规定的几个关键用例场景，分析演进包系统（EPS）的NS/EP数据传输服务调用/撤销，包括与NS/EP服务提供商的相关用户交互。 153，多媒体优先服务（第17版）。它描述了基于3GPP版本17中规定的EPS承载服务的更新策略和计费控制（PCC）功能对NS/EP数据传输服务的支持。

The proliferation of advanced data communications introduces new opportunities and challenges for National Security / Emergency Preparedness (NS/EP) communications. Expanded data capabilities enhance the ability for Service Users to carry out their NS/EP mission. At the same time, high data traffic volumes place significant demands upon Service Provider's networks and can hamper their ability to support the offered traffic load when these networks are impaired due to congestion and/or damage from natural or human-caused disasters. The NS/EP Data Transport Service is designed to address these needs.This Technical Report (TR) analyzes NS/EP Data Transport Service invocation / revocation for an Evolved Packet System (EPS), including the associated user interactions with the NS/EP Service Provider, for several key use case scenarios as specified in 3GPP TS 22.153, Multimedia priority service (Release 17). It describes support of the NS/EP Data Transport Service based on updated Policy and Charging Control (PCC) features for the EPS Bearer Service as specified in 3GPP Release 17.