All the exercises in this page were made
In the first part we were asked to sketch' the design of a new experience
enabled by a small object or accessory (i.e., something carried in the
pocket, jewelry, etc.) that utilizes an RF tag as the principle personal
a basic specifications of the 2-G cellular system technology chart using
the models presented in class.
technology research on either a 2-G, 3-G, or 4-G cellular system as
assigned to your group in class. Produce a basic specifications chart
using the models presented in class; add any additional information
you feel is relevant.
voice quality, coverage, and capacity.
and Data (low rate for 2G, medium for 2.5G), Digital, Duplex
GSM, TDMA (IS-136), CDMA, PDC
2.5G: GPRS, HSCDS, TDMA (IS-136B)
kbps 171.2 kpbs
modes :0.6 W and 3 W
MHz, 1800 MHz, 1900 MHz
rates are much lower than theoretical ones.
The other big advantage of GPRS over GSM is "almost instant connection",
which is sometimes refered to as "always on", and which
allows time-critical applications.
a potential wearable object or service that combines your group's cellular
technology with a personal area networking technology.
is Claudia, 25 years old, living in a small town in Italy. She lives
alone in her apartment. Since the last five years Claudia suffers
from multiple sclerosis. She wears a Bluetooth activated device on
her wrist all the time, to support her during difficult times.
it happens, that she suddenly gets fits of stiffness. In this situation
she cannot move her legs. Its like a temporary paralysis and she
feels very debilitated.
In such situations she calls for help from her local doctor by pressing
the Buetooth device on her wrist. The device then activates the
mobile phone and sends an emergency sms to the doctor. This way
she can aviod the costs of a perpetual help.