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所在平台: Udemy |
课程主页: https://www.udemy.com/course/learn-about-wireless-cellular-networks/
课程评论：没有评论
Coursera 无线蜂窝网络课程概述： 本课程深入探讨了无线蜂窝网络技术的演进，从早期的 0G（如 1970 年代的车载无线电话）到 1G（1970 年代末/1980 年代初的模拟移动通信），再到 2G（1991 年在芬兰推出，引入数字和电路交换）。课程详细介绍了 2.5G（GPRS 和 EDGE 引入的分组数据），3G（2000 年在日本推出，数据采用分组交换，语音仍为电路交换），以及 4G (LTE 和 WiMax，2008/2010 年商用，数据和语音均采用分组交换)。 课程还将重点关注 5G 技术，该技术追求 10 Gbps 或更高的通信速度，支持高清视频传输等。除了技术代际的演进，本课程还将详细讲解 GSM、3G 和 LTE 的网络架构，包括各网络节点及其功能。核心网作为网络的“大脑”，其功能（如用户认证、位置更新）以及使用的协议和接口也将是学习内容。此外，课程还会介绍智能网（Intelligent Network）如何通过提供增值服务（VAS）来帮助网络运营商实现差异化。最后，课程将以目前热门的 VoLTE 技术及其工作原理作为总结。 如果您想提升在无线蜂窝网络领域的知识，欢迎加入本课程。
Wireless Network course starts with discussion on evolution of various technologies, such as 0G, 1G, 2G, 2.5G, 3G, 4G, and 5G. In short: 0G refers to pre-cellular mobile telephony technology in 1970's, such as Radio telephones that some people had in their cars before the advent of cell phones 1st Generation or 1G started in late 1970s and early 1980s that represented a leap in mobile communication in terms of capacity and mobility. 2G network was first launched in Finland in 1991. In 2G networks started becoming digital and circuit switching concept was introduced. 2.5G refers to addition of GPRS or General Packet Radio System, and EDGE or Enhanced Data Evolution for GSM Evolution. This introduced data or Packet Switching on mobile devices. 3G network was first launched by NTT in JAPAN in 2000 1. In this generation, networks were based on concepts which stated that Packet Switched will be applicable for Data Services Only and voice was still using Circuit Switching concepts. 4G networks refer to Mobile WiMax and LTE or Long Term Evolution Standards that are competing to comply for 4G requirements of ITU.First mobile WiMax and LTE networks were commercially launched in 2008 and 2010 respectively.It is based on Packet Switched for both Voice and Data services. 5G is the subject of international research efforts seeking to achieve communications speeds of 10 Gbps or greater, enabling higher-definition video transmission and a range of additional benefits. The above-mentioned generations of mobile network are discussed in detail in the course content. The course includes GSM/3G/LTE network architecture. The nodes used in different network are covered including their functions. The Core Network is the brain of the network andperforms essential functions like user authentication, location update, etc. The core network, protocols and interfaces used in core network are part of the learning content. Participants will learn about Intelligent Network allows networks to differentiate themselves from other network operators by providing additional telecommunication services called VAS. The course concludes with the current hot topic VoLTE and its working. So, if you are interested to increase your knowledge about the wireless cellular networks, welcome aboard.
