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Performance of National Security and Emergency Preparedness Services During Hazards of National Significance

机译：具有重大意义的危险期间国家安全和应急准备服务的绩效

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Disasters can cause extraordinary public demand for communications services. Services supporting National Security and Emergency Preparedness (NS/EP) and public safety personnel must perform with minimal degradation during such events. This is provided by priority treatment mechanisms developed by carriers for the Department of Homeland Security's (DHS) Office of Emergency Communications (OEC). DHS OEC uses modeling and simulation analyses to predict the ability of NS/EP users to communicate during network congestion, and also to understand service performance anticipated for these users during events such as the National Planning Scenarios [1]. This paper describes simulation analyses used to identify projected congestion in Fourth Generation (4G) Long-term Evolution (LTE) networks and the ability of NS/EP users to communicate during these significant events. Analysis results indicate certain priority treatments over the LTE air interface can greatly improve the call completion probability for priority calls in these scenarios, depending on the configuration of these mechanisms. Depending on the type of disaster event, certain entities in the Evolved Packet Core (EPC) network can also become congested. This analysis was performed to direct efforts for future priority mechanism development, as well as providing guidance for recommended configurations for current priority mechanisms.
机译：灾难可能导致公众对通信服务的巨大需求。在此类事件中，支持国家安全和应急准备（NS / EP）的服务以及公共安全人员的表现必须降到最低。这是由运营商为国土安全部（DHS）紧急通信办公室（OEC）开发的优先处理机制提供的。 DHS OEC使用建模和仿真分析来预测NS / EP用户在网络拥塞期间进行通信的能力，并了解在国家计划方案等事件中这些用户预期的服务性能。本文介绍了用于识别第四代（4G）长期演进（LTE）网络中预计的拥塞情况以及NS / EP用户在这些重要事件中进行通信的能力的仿真分析。分析结果表明，根据这些机制的配置，在LTE空中接口上进行某些优先级处理可以大大提高这些情况下优先级呼叫的呼叫完成概率。根据灾难事件的类型，演进式分组核心（EPC）网络中的某些实体也会变得拥塞。进行此分析是为了指导未来的优先级机制开发工作，并为当前优先级机制的建议配置提供指导。

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