INTRODUCTION WIRELESS COMMUNICATION- Transfer of
information without ‘Wires’ MOBILE WIRELESS INDUSTRY- started technology creation in early 1970’s. Advantages – Constant connection Access to up-to-date information No cables Extensibility e.g., remote areas with satellite Freedom to roam.
First Generation Wireless Developed in
1980’s. Analogue transmission technology. Focus on voice. Data services almost non-existent. Incompatible standards:- • Different frequencies and signaling. • International roaming impossible.
Analysis of 1G• 1st wireless
• Low capacity, cellphone unreliable introduced. handoff.• Focussed on voice. S W T O• No threats. • Its an outdated technology.
Second Generation WirelessIt was invented
and developed in1990-91.Digital transmission technology.Increased quality of servicePossibility of wireless data servicesMost successful 2G system 863 million users in 197 countries.
Third Generation Wireless Introduced in
2004-05. Increased clarity. Perfection as like a real conversation. Highly sophisticated form of communication. Applications are: Mobile TV Video on demand Video Conferencing Location Based Services
3.5 G Wireless Known for
HSDPA (High-Speed Downlink Packet Access). It provides a smooth evolutionary path for 3G networks allowing for higher data transfer speeds. Data transmission up to 8-10 Mbit/s (and 20 Mbit/s for some systems).
3.75 G Wireless The 3.75G
refer to the High Speed Uplink Packet Access (HSUPA) technology. The HSUPA mobile telecommunications technology is directly related to HSDPA and the two are complimentary to one another. HSUPA will enhance advanced person-to-person data applications with higher and symmetric data rates, like Mobile e-mail. Real-time person-to-person gaming. Speed 1.4Mbps-5.8Mbps.
3G Analysis• Worldwide •Higher cost
as standard for compared with accessing their global predecessors. telecommunicat ions. S W T O•Since 2G mobile •Consumers is in replacing market, sqeezing handsets with the market newer technology. competition.
Fourth Generation WirelessSuccessor to 3G
and 2G.A collection of technologies creating fully packet-switched networks optimized for data. Provide speeds of 100 Mbps to 1 Gbps. Provides wireless alternative for broadband access to residential and business customers.In addition, 4G will provide the first opportunity for broadband access in remote locations.
4G Analysis • Strong position
of telecom vendors expected in market.Strength • Advantage for personalized multimedia communication tools. • Growing divergence between telecom vendors & operators.Weakness • Comparatively higher cost to use & deploy infrastructure.
4G Analysis • Worldwide economy
recover stimulates consumption and consumer confidence.Opportunities • Desirable higher data capacity rates the growth opportunity is very bright & hopeful. • Since 3g mobile is still in the market, it squeezes the market competition in mobile industry. Threats
Comparison between 1G,2G,3G & 4GGeneration
Time Definition Characteristics Speed PeriodI (1G) 1980-1990 Analog Voice only 14.4 Kbps (peak)II (2G) 1990-2006 Digital narrow band Data along voice, 56Kbps to 115 circuit data/packet MMS, web kbps data browsing.III (3G) 2006-2011 Digital broadband Universal access, 5.8 Mbps to 14.4 packet data. portability, Video Mbps callingIV (4G) Now Digital broadband HD streaming, 100 Mbps to 1 (Upcoming) packet very high portability increased Gbps throughput to Worldwide roaming.
Conclusion Attempts have been made
to reduce a number of technologies to a single global standard. Upcoming 4G systems offer this promise of a standard. So 4G will be the best as compared with its predecessors.