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The Engineer's Perspective: A Case Study on Wi-Fi vs. 3G Technology in Global Markets

This case study offers insights into the comparison between Wi-Fi and 3G technologies from an engineer's point of view. It delves into the advantages and disadvantages of Wi-Fi technology, highlighting its cost-effectiveness, range, and potential market penetration. The study also explores the market trends and infrastructure challenges faced by both technologies in different regions, including the USA, China, Japan, the UK, Europe, and Hong Kong. It touches upon the government regulations, application possibilities, and the competitive landscape in the IT sector. The analysis reveals the potential impact of Wi-Fi technology on the telecommunications industry, with real-world examples and projections for future growth.

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The Engineer's Perspective: A Case Study on Wi-Fi vs. 3G Technology in Global Markets

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  1. ELE 2860H. T. Tsui • 1. The view of an H. K. Engineer • 2 A case study

  2. The World in the Eyes of an Engineer World scene Regional scene Local scene

  3. GNP • China 1 • USA 9 • Japan 4 • UK 1 • Europe 1 • HK 0.15

  4. Ranking on IT • Singapore Taiwan KoreaH.K. Market 10 7 19 23 Infrastructure 13 19 25 18 Government 1 2 15 11 Application (CO) 7 18 12 15 Application ( P) 9 14 1 23 ….. Total 3 9 14 18

  5. A case study: 3G Vs Wi Fi • Wi Fi is a wireless technology which have a data rate 5 times that of 3G • Advantages: • Based on technology in the public domain. • A Wi Fi access point (base station) cost US$ 70 ( cellular one cost more than $ 50,000)

  6. WI- FI (1) In major cities, many hot spot access points can be set up at low cost in cafés, airports, stations. Cheap: HK $ 3 per 10 minutes in Pacific Cafes in H. K. • Access Points : 200 in H. K. • 5,000 in Seoul • Voice over IP

  7. WI- FI (2) • Wi-Fi enabled devices Half the lap top sold have built in or add on wi-fi Even PDAs have this capability if higher power is allowed. wi-fi can have a range of 2.5 KM. Hot spot can be extended to cover tall building

  8. WI- FI (3) • Disadvantages Limited to within 100-300 meters from a hot spot (access point) 4W transmission power The lab top using wi-fi is not allowed to be mobile Spectrum crowded: 2.4 giga hetz

  9. Wi-fi service business is a low risk one • For PCCW • If it spend US $ 10 million, it can provide service to 28 % of urban H.K. by 2011 It can break even by 2009 For a dominant fixed line player like PCCW, wireless coverage is more simple. It can put wi-fi access point atop existing cables

  10. 3G in danger For a 3G operator The cost for a network covering H.K. is US $250 million + 6.4 millions annual licence fee

  11. Wi-fi development in US and Europe • Wi-fi has developed as a community movement. • Wi-Fi normads without an account can have free access • People opening network to entire neighbourhoods, marking access points by chalk in front of wi-fi-enabled houses. This force many local businesses to offer free access too.

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