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所在平台: Udemy |
课程主页: https://www.udemy.com/course/telecommunications-mobile-networks/
课程评论：没有评论
**课程名称：** 移动通信：化繁为简的复杂技术 **课程概述：** 本课程深入浅出地介绍了移动通信网络的核心组成部分，包括无线接入网（RAN）和核心网。课程从2G GSM讲起，追溯到3G UMTS，再到4G LTE及更先进的技术。我们将踏上一段探索之旅，了解构成移动电信网络的各种网络拓扑、网络元素、协议、信号、标准、接口和功能。每一步都旨在帮助您理解行业术语，并理清移动通信各层之间的联系。 本课程专注于普遍适用的技术，而非特定厂商的设备。通过按照技术发展的时间顺序进行讲解，本课程允许学生在前一阶段知识的基础上不断学习，从而避免因对早期概念理解不透彻而难以掌握后续技术（例如，在未充分理解UMTS概念的情况下难以理解4G）。 **课程内容涵盖：** * **3G无线接入网 (RAN)：** * 基站（Cell Site）配置 * 不同切换类型的比较 * UMTS从AMPS和GSM的演进 * 基站的物理组件 * UMTS架构与接口 * “扩频”技术及其在W-CDMA中的应用 * 物理、逻辑和传输信道的详解 * 同步 * **3G核心网：** * 区分用户面和控制面 * 核心网的内部和外部接口 * 引入非接入层（Non-stratum Access layer）及其与核心网的相关性 * 核心网元素及其典型拓扑 * 分组交换和电路交换中各网络元素的职能 * 寻呼机制 * IMSI, MSISDN, IMEI, ICCID & SIM的含义与用途，以及它们包含的信息 * 用户数据如何路由和处理 * 3G用户如何进行鉴权以及其数据的加密方式 * 移动用户呼叫固定线路用户的案例分析 * 国际漫游： * 入向和出向漫游者的区别 * 通过出向漫游者呼叫案例分析国际漫游功能 * 通过入向漫游者呼叫案例分析国际漫游功能 * 漫游时如何处理短号码 * 漫游计费方式，包括涉及语音信箱的呼叫案例 * 运营商间的国际漫游协议是如何创建的 * 国际漫游在部署前如何进行测试 * CDRs和TAP文件在计费中的使用 * 清算机构在结算国际账户中的作用 * 用户与运营商之间合同的内容 * **长期演进 (LTE)：** * 从运营商角度看3G技术的演进 * 从客户角度看3G技术的演进 * LTE, LTE-A和4G的主要区别 * LTE中的全IP网络（All IP networks）和下一代网络（NGN）应用 * LTE E-UTRAN的功能、架构、网络元素和接口 * LTE无线技术：OFDMA, SC-FDMA和MIMO的应用 * LTE频谱利用 * LTE EPC的功能、架构、网络元素和接口 * LTE协议栈 * LTE中的语音解决方案，包括VoLTE、OTT和回落（Fallback） 本课程鼓励学生勇于探索未知，提出关键问题，并通过研究来验证所获信息。
This course describes the radio and core sub-networks of a mobile network. It reminds us a little on how it all began with 2G GSM and moves through 3G UMTS to 4G LTE and beyond. We take a journey through the different network topologies, network elements, protocols, signals, standards, interfaces and functionalities that make up a mobile telecom network. As we explore this fascinating world, we get to understand the terminology, and to "join the dots" between the many layers that belong to mobile telecommunications. This course is not about specific vendor equipment. It is course about the technology that is used by telephone companies all over the world. This course makes a very complicated topic very easy to understand and the knowledge can be applied to any vendor equipment. It does this by teaching the technology in the order it was implemented and thus allows the student to build upon knowledge already gained. It avoids for example, the inability to understand 4G technology because certain concepts in UMTS had never been fully understood. The course covers; 3G Radio Access Networks (RAN) Cell Site Configuration A comparison of handover typesThe evolution of UMTS from AMPS and GSMThe physical components of a cell siteUMTS architecture and interfacesAn explanation of "spreading" and how it is used in W-CDMAPhysical, logical and transport channels explainedSynchronisation 3G Core Networks Understanding the difference between user planes and control planesInternal and external core network interfacesIntroducing the Non-stratum Access layer and understanding its relevance to the core networkCore network elements and typical topologiesThe function of each NE for packet switching and circuit switchingHow paging worksThe meaning and use of the IMSI, MSISDN, IMEI, ICCID & SIM and the information they contain How subscriber data is routed and processedHow 3G subscribers are authenticated and how their data is encryptedA mobile subscriber to fixed line subscriber call case International Roaming The difference between inbound and outbound roamersThe functionality of international roaming by considering the call case of an outbound roamer The functionality of international roaming by considering the call case of an inbound roamerDealing with short numbers when roamingHow roaming is charged for including call cases involving voicemailHow international roaming agreements between operators are created How international roaming is tested prior to being implementedHow CDRs and TAP files are used for billingHow clearing-houses are used to settle international accountsThe contents of a contract between subscribers and operators Long Term Evolution (LTE) The evolution from 3G technology from an operator's perspectiveThe evolution from 3G technology from a customer's perspectiveThe differences between LTE, LTE-A and 4GAll IP networks and NGN as applied to LTELTE E-UTRAN's functionality, architecture, network elements and interfacesLTE Radio; use of OFDMA, SC-FDMA and MIMOLTE use of spectrumLTE EPC's functionality, architecture, network elements and interfacesLTE Protocol stackVoice options in LTE including VoLTE, OTT and Fallback The course encourages students to understand what they don't know, to ask the right questions and to validate the answers they have found through research.
