Workshop on 4g Network Essentials
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A two-day “Workshop on 4G Network Essentials” was conducted on 12 and 19 March 2019, 12 noon to 2pm, in the Telecommunications Lab (B108) for Electronics and Telecommunications Engineering students in all levels.
The resource speakers, Mr Devasenathipathy and Mrs Subabaharathi, covered the following topics: GSM Architecture, 1G Technology and Models, 2G Technology and Models, 3G Technology, 4G Technology, 5G Technology, the evolution from 1G to 5G, and Wireless Applications. Practical, hands-on sessions were also conducted.
The First Generation (1G) wireless mobile communication systems were introduced in the early eighties, while the Second Generation (2G) Systems, in the late 1980s, were intended primarily for transmission of voice. The initial systems (1G) used analogue Frequency Modulation (FM) whereas the second, as well as the subsequent mobile systems, use digital communication techniques with Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or the Code Division Multiple Access (CDMA).
The Third Generation (3G) wireless system, which was introduced to world markets, offer considerably higher data rates and allow significant improvements over the 2G Systems. The 3G wireless systems provide voice and paging services as well as interactive multimedia including teleconferencing, internet access, and variety of other services. However, these systems offer Wide Area Network (WAN) coverage of 384 Kbps peak rate and a limited coverage for 2Mbps. Hence, providing broadband services would be one of the major goals of the 4G wireless systems.
A descendant of 2G and 3G systems, the Fourth Generation (4G) wireless system aims to provide very high data transfer rates. 4G Technology can provide speedy wireless internet access to not only stationary users, but also to mobile users. This technology is expected to improve on the deficiencies of 3G technology in terms of speed and quality.
4G can be best described as a mobile multimedia anytime anywhere global mobility support platform. Offering integrated wireless and personalised services, 4G has engaged the attention of wireless operators, equipment makers (OEMs), investors, and industry watchers around the world. 4G promises higher data rates and expanded multimedia services.
Since 4G is currently more of an aspiration than a standard, there is no agreement yet on what should eventually constitute the totality of the 4G System.