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所在平台: Udemy |
课程主页: https://www.udemy.com/course/voice-over-5g-voice-over-new-radio-vonr-volte-eps-fallback/
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课程名称：Voice Over 5G (Vo5G) 课程概述： 本课程深入探讨了5G移动系统中的语音和视频通信服务，即Vo5G。尽管5G的演进主要由数据服务驱动，但语音和视频通信的质量和性能对其成功至关重要。课程从2G到5G的语音服务演进历史讲起，介绍了5G部署初期的VoLTE（Voice over LTE）以及随着5G技术发展引入的VoNR（Voice over New Radio）。VoLTE和VoNR是基于IMS（IP Multimedia Subsystem）平台提供的不同接入方式。Vo5G的未来将不仅仅局限于传统的通话，而是会更深入地与增强现实（AR）、远程机器人、沉浸式娱乐等5G应用融合，提供更丰富的体验。 课程大纲： * **第一部分：引言** * 移动网络的三大组成部分 * 语音服务从2G到5G的演进 * GSMA关于VoLTE和5G的规范 * 技术时间线和关键里程碑 * Vo5G解决方案概览 * **第二部分：5G部署选项回顾** * 什么是双连接（Dual Connectivity）？ * 5G独立（Standalone）部署选项2 * 5G非独立（Non-Standalone, NSA）部署选项3 * 5G非独立（NSA）部署选项4 * 5G非独立（NSA）部署选项7 * **第三部分：Vo5G解决方案概述** * 5G中的语音解决方案类型： 1. 5G NSA部署中的VoLTE 2. 使用回落机制的VoLTE 3. VoNR * 部署选项4和7中的语音服务 * **第四部分：IMS（IP多媒体子系统）全景** * 什么是IMS（IP Multimedia Subsystem）？ * IMS的特性 * IMS架构：各层级介绍 * 呼叫会话控制功能（CSCFs）：P-CSCF, I-CSCF, S-CSCF * IMS中的应用服务器（ASs） * IMS使用的协议：会话初始协议（SIP） * SIP提供的服务 * SIP方法 * **第五部分：IMS高级流程** * IMS连接要求 * IMS连接的协议数据单元（PDU）会话 * IMS在5G中的集成 * IMS注册：P-CSCF发现 * UE注册IMS网络的信令流程 * IMS中的第三方注册 * 呼叫建立的端到端信令路径 * 呼叫建立和媒体承载建立的端到端SIP信令 * IMS媒体承载拆除 * **第六部分：VoLTE与VoNR的语音编码器** * 什么是IP语音的语音编码器？ * 4G/5G中的语音编码器 * 增强型语音服务（EVS）编码器及其工作模式 * **第七部分：IMS语音呼叫的5G系统特定流程** * N26接口的重要性 * UE注册模式： 1. 带N26接口的单注册 2. 不带N26接口的单注册 3. 双注册模式 * 5G注册（侧重语音方面） * 端到端VoNR呼叫流程 * EPS回落（EPS Fallback）：高级信令 * EPS回落机制类型 * EPS回落机制类型的比较 * EPS回落：从5GS到EPS（带N26接口） * EPS回落：从5GS到EPC的重定向（带N26接口） * RAT回落：高级信令 * 5G NSA（EN-DC）中的VoLTE * VoLTE高级信令
Vo5G, or Voice over 5G, refers to the voice and video communication services enabled by the 5G mobile systems. While 5G's evolution is primarily driven by data services, voice and video communication remain crucial for its success.In the initial phase of 5G deployment, voice and video services are delivered over LTE networks using the IMS (IP Multimedia Subsystem) platform. This technology is known as VOLTE (Voice Over LTE) in 5G non-standalone deployment. As 5G advances, the focus shifts to the new 5G radio access technology, known as NR (New Radio), which enables VoNR (Voice over New Radio) as the next-generation solution for delivering voice and video services.. VoLTE and VoNR represent different access modes for delivering IMS-based voice and video communication services.The transition from VoLTE to VoNR marks the evolution of Vo5G, which goes beyond traditional calls. With Vo5G, improved voice and video services will integrate seamlessly into a variety of 5G-enabled applications, such as augmented reality (AR), remote robotics, and immersive entertainment platforms like gaming and streaming.This course delves deep into the technical intricacies of Vo5G, providing a comprehensive understanding of how voice and video services are evolving alongside 5G technology. Here is the outline of the course:Section 1: IntroductionIntroductionThree main Components of a Mobile NetworkEvolution of Voice Services: From 2G to 5GGSMA Profiles for Voice over LTE and 5GTechnology Timeline and Key MilestonesVoice Over 5G SolutionsSection 2: Review of Important 5G Deployment OptionsWhat is Dual Connectivity?5G Standalone Option 25G Non-standalone (NSA) Option 35G Non-Standalone (NSA) option 45G Non-Standalone (NSA) option 7Section 3: Overview of Voice over 5G SolutionsTypes of Voice Solutions in 5G 1. Voice Over LTE (VOLTE) in 5G NSA deployment 2. VOLTE using Fallback Mechanism 3. Voice Over 5G NR (VONR)Voice Services in 5G Deployment Option 4 & 7Section 4: IMS the Bigger PictureWhat is IP Multimedia Subsystem (IMS)?IMS FeaturesIMS Architecture-Different LayersCall Session Control Functions (CSCFs): P (Proxy)-CSCFI (Interrogating)-CSCFS (Serving)-CSCFApplication Servers (ASs) in IMSProtocols Used in IMSSession Initiation ProtocolServices Provided by SIPSIP MethodsSection 5: High Level IMS ProceduresIMS Connectivity RequirementProtocol Data Unit (PDU) Session for IMS ConnectivityIntegration of IMS in 5GIMS Registration: P-CSCF DiscoverySignal Flow for UE Registration with IMS Network3rd Party Registration in IMSEnd-to-end Signaling Path For call setupEnd-to-end SIP Signaling for Call Setup and Media Bearer EstablishmentIMS Media Bearer Tear DownSection 6: Voice Codecs for VOLTE & VONRWhat is a Speech Codec for Voice Over IP?Voice Codecs in 4G/5GEnhanced Voice Services (EVS) Codecs & Operating ModesSection 7: 5G System Specific Procedures for IMS Voice CallWhy N26 Interface is Important?UE Registration Modes 1) Single Registration with N26 Interface 2) Single Registration without N26 Interface 3) Dual Registration Mode5G Registration With Focus on Voice AspectsEnd-to-End VONR Call FlowEPS Fallback-High Level SignalingEPS Fallback Mechanism TypesComparison of EPS Fallback Mechanism TypesEPS Fallback-5GS to EPS Handover with N26EPS Fallback-5GS to EPC Redirection with N26RAT Fallback-High Level SignalingVOLTE in 5G NSA (EN-DC)VOLTE High Level Signaling
