Lesson 1: Course Introduction and History of Computer Network Development
telephone network
Time-sharing system—terminals without processing power connect to the central computer, without dedicated network equipment
ARPANET—
Internet—
High-speed network - fiber optic technology
Ubiquitous network—the popularization of wireless networks, the integration and interconnection of different types of networks, wireless sensor networks, the Internet of Things
Lesson 2: The history of wireless communication technology
The history of wireless communication technology
Marconi
WWII
Communications satellite
Aloha Network
cellular phone
IEEE802.11
Classification of wireless networks
coverage
Objects participating in networking
Technical Features
frequency of use
Whether to use the infrastructure
Lesson 3: Wireless network characteristics and standardization organizations in this field
Features of wireless networks
Physical layer protocols are diverse and complex
Media Access Control MAC Complex
Wireless signal security, energy
Organization for Standardization of Wireless Networks
ITU International Telecommunication Union
ITU is the United Nations agency in charge of information and communication technology affairs, responsible for allocating and managing global radio spectrum and satellite orbit resources, setting global telecommunication standards, providing telecommunication assistance to developing countries, and promoting global telecommunication development
ISO is a member of ITU-T
IEEE Institute of Electrical and Electronics Engineers
IAB
IRTF, (Internet Research Task Force) is an organization authorized by the Internet Architecture Board (IAB) to conduct theoretical research on some long-term Internet problems. Like the IETF, the IRTF has many research groups that conduct discussions and research on different research topics.
The main task of IETF (The Internet Engineering Task Force) is to be responsible for the research and development and formulation of Internet-related technical standards. It is an authoritative network-related technology research group in the international Internet industry.