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2.1 DEFINITION
Mobile Computing is an umbrella term used to describe technologies that enable people
to access network services anyplace, anytime, and anywhere. Ubiquitous computing and
nomadic computing are synonymous with mobile computing. Information access via a mobile
device is plagued by low available bandwidth, poor connection maintenence, poor security, and
addressing problems. Unlike their wired counterparts, design of software for mobile devices
must consider resource limitation, battery power and display size. Consequently, new hardware
and software techniques must be developed.

2.2 SPECIFICATION, SERVIS AND FREQUENCIES OF MOBILE
COMPUTING

SPECIFICATION OS: Android OS, v4.2 (Jelly Bean)
Chipset: Mediatek MT6589T
CPU: Quad-core 1.5 GHz Cortex A7
GPU: PowerVR SGX544MP2
Sensors: Accelerometer, proximity, compass
SERVICES

Messaging: SMS(threaded view), MMS, Email,
Push Mail, IM, RSS
Browser: HTML5
Radio: FM radio
GPS: Yes, with A-GPS support
Java: Yes, via Java MIDP emulator
-Google Search, Maps, Gmail,
-YouTube, Calendar, Google Talk
FREQUENCIES
2G Network: GSM 850 / 900 / 1800 / 1900
3G Network: HSDPA 850 / 1900
4G Network: HSDPA 900 / 2100
Speed: HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
WLAN: Wi-Fi 802.11 b/g/n, Wi-Fi hotspot
Bluetooth: Yes, v3.0 with A2DP
USB: Yes, microUSB v2.0, USB On-the-go



3.0 INTERNET TECHNOLOGY AND SERVICES
3.1 VoIP
Voice Over IP is a telephone service that uses the Internet as a global telephone
network. Many companies, including Vonage, 8×8 and AT&T (CallVantage),
typically offer calling within the country for a fixed fee and a low per-minute
charge for international. Broadband Internet access (cable or DSL) is required, and
regular house phones plug into an analog telephone adapter (ATA) provided by the
company or purchased from a third party.

3.2 BLOG
A blog is a lot like a journal except it is generally intended to be read by others.
The topics for blogs vary greatly; some being about day to day activities and others
taking a more corporate or political slant. There is no defined or widely accepted
format and so blogs range from one liners that the author adds every few hours to
relatively long, well thought out arguments for or against a topic of interest.



4.0 TYPE OF NETWORK
4.1 PAN
A Personal Area Network (PAN) is a computer network used for communication
among computer devices (including telephones and personal digital assistants)
close to one person. The devices may or may not belong to the person in question.
The reach of a PAN is typically a few meters. PANs can be used for
communication among the personal devices themselves (intrapersonal
communication), or for connecting to a higher level network and the Internet (an
uplink). Personal area networks may be wired with computer buses such asUSB
and FireWire. A wireless personal area network (WPAN) can also be made
possible with network technologies such as IrDA and Bluetooth.

4.2 VPN
Short for (Virtual Private Network), VPN is a type of network that allows a user to
connect to a network through a tunneling protocol and access internal internet and
intranet web sites and e-mail. Virtual Private Networks are commonly used to
allow an employee with a large company to connect to the company’s intranet.

4.3 WLAN
A Wireless Local Area Network, sometimes referred to as LAWN ( local area
wireless network ) is one in which a mobile user can connect to a local area
network (LAN) through a wireless (radio) connection. The IEEE 802.11 group of
standards specify the technologies for wireless LANs. 802.11 standards use the
Ethernetprotocol and CSMA/CA (carrier sense multiple access with collision
avoidance) for path sharing and include an encryption method, the Wired
Equivalent Privacy algorithm. A personal area network.


4.4 WIMAX
WiMax is the industry term for a long-range wireless networking standard. WiMax
technology has the potential to deliver high-speed Internet access to rural areas and
other locations not serviced by cable or DSL technology. WiMax also offers an
alternative to satellite Internet services.WiMax technology is based on the IEEE
802.16 WANcommunications standard. WiMax signals can function over a
distance of several miles / kilometers. Data rates for WiMax can reach up to 75
megabits per second (Mb/s). A number of wireless signaling options exist ranging
anywhere from the 2 GHz range up to 66 GHz.


5.0 CONCLUSION

Mobile computing (like the peer to peer transaction model did) brings about a new
paradigm of distributed computing in which communication may be achieved through wireless
networks and users can compute even as they relocate from one support environment to another.
The impact of mobile computing on systems design goes beyond the networking level and
directly effects data management. Although being a relatively new area, mobile data
management has attracted a lot of research efforts, motivated by both a great market potential
and by many challenging research problem.






REFERENCE
http://www.wimax.com/deployment/network
http://en.wikipedia.org/wiki/Computer_network