2. 1.WiMAX
1.1 Fixed WiMAX
1.2 Mobile WiMAX
2. Cellular telephony
2.1 First generation (1G)
2.2 Second generation (2G)
2.3 Third generation (3G)
2.4 Fourth generation (4G)
2.5 Fifth generation (5G)
Copyright (c) Subin Ghimire 2
Table of context
3. Worldwide interoperability for microwave access.
There are two Types of WiMAX:
1.1 Fixed WiMAX
1.2 Mobile WiMAX
Copyright (c) Subin Ghimire 3
1. WiMAX
4. Broadband service and consumer usage of fixed WiMAX access is expected to
reflect that of fixed wire-line service, with many of the standards-based
requirements being confined to the air interface
Copyright (c) Subin Ghimire 4
1.1 Fixed WiMAX
6. Mobile WiMAX (WiMAX comes from "Worldwide Interoperability for
Microwave Access") is a technical wireless standard allowing web browsing
and wireless data transfer on the move. It's an another way of calling the
802.16e protocol.
Copyright (c) Subin Ghimire 6
1.2 Mobile WiMAX
8. Cellular telephony is the provision of telephone services to phones which
may move around freely rather than stay fixed in one location. Mobile phones
connect to a terrestrial cellular network of base stations (cell sites),
whereas satellite phones connect to orbiting satellites.
Copyright (c) Subin Ghimire 8
2. Cellular telephony
9. 2.1 First generation (1G)
2.2 Second generation (2G)
2.3 Third generation (3G)
2.4 Fourth generation (4G)
2.5 Fifth generation (5G)
Copyright (c) Subin Ghimire 9
Types of Cellular telephony
10. 1.G refers to the first generation of wireless cellular technology (mobile
telecommunications).
These are the analog telecommunications standards that were introduced in the
1980s
Advanced mobile phone system (AMPS) is the example of first generation.
Uses FDMA
AMPS operates on ISM 800 MHz
Copyright (c) Subin Ghimire 10
2.1 First generation (1G)
11. Second generation was launched in Finland in the year 1991
2G network holds sufficient security for both the sender & the receiver
2G technology is useful to both the users & the network operators at the same
time
Copyright (c) Subin Ghimire 11
2.2 Second generation (2G)
12. The third-generation concept started in 1992, when ITU issued a blueprint
called the Internet Mobile Communication 2000 (IMT-2000).
provides both digital data and voice communication
portable device is always connected; you do not need to dial a number to
connect to the Internet.
Copyright (c) Subin Ghimire 12
2.3 Third generation (3G)
13. It provides an all IP packet switched network for transmission of voice,
data, signals and multimedia
It aims to provide high quality uninterrupted services to any location at
any time.
It also lays down that 4G networks should make it possible for 1 Gbps
downlink over less than 67 MHz bandwidth.
They provide have smooth handoffs across heterogeneous network areas.
Copyright (c) Subin Ghimire 13
2.4 Fourth generation (4G)
