2. wireless wide area network (WWAN):
A wireless wide area network (WWAN), is a form of wireless networks that
operates on small and portable devices.
WWANS are designed to provide broad continuous coverage.
Access to the network is available over much wider areas
WWAN Keep your business connected quickly, and enable data transmission
and transaction processing from almost anywhere business takes you.
3. wireless wide area network (WWAN):
The voice switch connects the user device to another wireless
Text messaging is a popular application of cellular-based wireless WANs.
he cell tower receives signals from user devices and transmits
information back to the user
A satellite-based wireless WAN have different components than a cellular-based
system's WANs satisfy both mobile and stationary applications.
4. Basic Components of WWAN
Wireless WAN User Devices
Cellular networks
Base stations
6. Cellular networks
A cellular network is a radio network distributed over land through
cells includes a fixed location transceiver known as base station.
Cells together provide radio coverage over larger geographical areas
User equipment (UE), such as mobile phones, laptops etc. enables you
keep moving through cells during transmission.
Cellular networks maintain information for tracking the location.
7. Cellular networks
The base station is responsible for monitoring the level of the signals.
When the user moves away from the geographical coverage area of the base
station, the signal level may fall.
Base station makes a request to the MSC to transfer the control to another
base station.
A typical cell site offers geographical coverage of between 9 to 21 miles.
8. Cellular networks give subscribers
advanced features over alternative
solutions:
Battery power usage
A larger geographical coverage area
Reduced interference from other signals.
9. Base stations
BASE station sends/receives radio signals and is responsible for forming the cell
The antennas - to send and receive radio signals within the cell.
i. Communications room: the location for storage of electronic equipment, e.g.
Communication apparatus, receivers, transmitters and amplifiers, switches hubs,
routers etc.
ii. Computer system: contains the monitors that control transmitters and
receivers.
iii. Electricity supply systems: such as power systems and backup systems in
the case of power failures.
11. Major Comparison of Wireless WAN & Wireless WAN:
Wireless LAN Wireless WAN
Coverage Office Building or campus with some public
hotspot
100 meters
Available wherever the cellular network is
present.
Speed 1—54Mbps(However it varies according to the
internet connection)
30-50 kbps(GPRS)
40-70 kbps(CDMA2000 1X)
Security Security flaws
Key authentication, Physical access
Secure encryption and authentication
Airtime Charges Airtime charges exist for most Hotspot access.
No airtime charges for office or home users
(although ISP monthly service fee still exist.
Monthly subscription from wireless network
provider.
Uses Accessing a shared network within a building
or across a campus.
Remote access to a corporate network for
email application.
Web and internet access
Voice No Yes
Wired Analogy Ethernet Network Remote modem access
Advantages o High Speed
o No airtime charges to set up networks
(hardware costs and broadband internet
connection fee still apply)
o Ubiquitous coverage
o Secure Network
o Access your data from anywhere.
Disadvantages o Localized coverage only
o Security problem
o Data rates faster than dial up, but not at
wireless LAN speeds yet.
