Please enable JavaScript.
Coggle requires JavaScript to display documents.
FUNDAMETAL OF MOBILE COMPUTING - Coggle Diagram
FUNDAMETAL OF MOBILE COMPUTING
What is Mobile Computing
Mobile computing refers to IT technologies, enable users to access network and transmit data via computer or wireless.
Mobile Technology that
Mind Blowing
Jaw-Dropping Graphic
High Quality Multimedia
Reliable Connectivity
Internent Speed
Long Batery Life
Why Mobile Computing
Enable anytime,anywhere
enable mobiliti(mudah begerak)
Connct Fast
Connect Longer without plug in batery(long life batery)
Wireless Communication
Definition
Method of transferring information between a computing device
, such as a smartphone, and a data source, database server, without a physical connection.
Type of wireless device
Laptops
SmartPhone
Tablet
Device and Platform
Android
IOS
Challenges
Networking Challenges
Communication Issue: protocols (old and new), technologies (old and new)
accommodating host relocations
network services to mobile users (e.g., mobile multicast)
Operating System Challenges
OS support for mobility oriented devices (e.g. intermittently powered, limited
resources)
OS services for mobile clients (e.g., to ensure data availability, data integrity)
Wired channel (easily engineered)
Too many noises? – use shell to protect against electromagnetic noise
Large signal attenuation? - use repeaters to amplify the signal
Data rate too low? - upgrade to coaxial cable or optical fiber
Low error rate - Good quality: 10-6; Optical fiber: 10-11 ~ 10-12
Wireless channel (hardly be engineered )
High background noises
Signal strength fluctuates significantly
Low data rate
High error rate – Radio: 10-2 or worse
Other Challenges
device design: size and weight, usability
energy conservation
security, authentication, authorization
application development