Pervasive Computing

COMPUTING IS EVERYWHERE
AND ANYWHERE

INTRODUCTION
GOALS OF PERVASIVE COMPUTING
LAYERS IN PERVASIVE COMPUTING
PRINCIPLES OF PERVASIVE COMPUTING
VISIONS AND CHALLENGE
DIFFERENCE BETWEEN UBIQUITOUS AND
PERVASIVE COMPUTING
APPLICATIONS
BENEFITS
LIMITATIONS
CONCLUSION
SYNOPSIS

• Pervasive computing (also called ubiquitous
computing) is the growing trend towards
embedding microprocessors in everyday objects so
they can communicate information. The words
pervasive and ubiquitous mean "existing
everywhere." Pervasive computing devices are
completely connected and constantly available.
• Pervasive computing relies on the convergence
of wireless technologies, advanced electronics and
the Internet. The goal of researchers working in
pervasive computing is to create smart products that
communicate unobtrusively. The products are
connected to the Internet and the data they generate
is easily available.

The idea that technology is moving beyond
the personal computer to everyday devices
with embedded technology and connectivity
as computing devices become progressively
smaller and more powerful. Also
called ubiquitous computing, pervasive
computing is the result of computer
technology advancing at exponential speeds -
- a trend toward all man-made and some
natural products having hardware and
software.

GOAL OF PERVASIVE COMPUTING
Pervasive computing goes beyond the realm of
personal computers: it is the idea that almost any
device, from clothing to tools to appliances to cars to
homes to the human body to your coffee mug, can be
imbedded with chips to connect the device to an
infinite network of other devices. The goal of
pervasive computing, which combines current
network technologies with wireless computing, voice
recognition, Internet capability and artificial
intelligence, is to create an environment where the
connectivity of devices is embedded in such a way
that the connectivity is unobtrusive and always
available.

Layer 1: task management layer
 Monitors user task, context and index
 Map user's task to need for the services in the
environment
 To manage complex dependencies
Layer 2: environment management layer
 To monitor a resource and its capabilities
 To map service need, user level states of specific
capabilities
Layer 3: environment layer
 To monitor a relevant resource
 To manage reliability of the resources

VISIONS AND CHALLENGE
The essence of that vision was the creation of
environments saturated with computing and
communication capability, yet gracefully integrated
with human users. When articulated, this was a
vision too far ahead of its time — the hardware
technology needed to achieve it simply did not
exist.

• Ubiquitous means everywhere. Pervasive means "diffused throughout every part of." In
computing terms, those seem like somewhat similar concepts. Ubiquitous computing
would be everywhere, and pervasive computing would be in all parts of your life.
• That might mean the difference between seeing kiosks on every street corner and
finding that you could -- or need to -- use your Palm handheld to do absolutely every
information-based task.
• And, in fact, that's where the difference between these two types of computing lies.
Pervasive computing involves devices like handhelds -- small, easy-to-use devices --
through which we'll be able to get information on anything and everything. That's the
sort of thing that Web-enabled cell phones promise. Ubiquitous computing, though,
eschews our having to use computers at all. Instead, it's computing in the background,
with technology embedded in the things we already use. That might be a car navigation
system that, by accessing satellite pictures, alerts us to a traffic jam ahead, or an oven
that shuts off when our food is cooked.
Pervasive describes things that spread through a place to become established
everywhere.
Ubiquitous describes things that are everywhere in a place because it is the nature of that
place to have those ubiquitous things.

BENEFITS
 INVISIBLE:
“Smart” environments will be embedded with computing technologies that will be
mostly out-of-sight.
 SOIALIZATION:
“Smart” buildings will illicit a more social response from occupants as computers user
interfaces embed themselves within architecture.
 DECISION-MAKING:
“Smart” environments will help occupants to make better choices as they go about
their everyday lives.
 EMERGENT BEHAVIOR:
Buildings are now becoming more and more kinetic in form and function. Their
movements and constructed designs come together dynamically to yield behaviours
that make them more adaptive.
 INFORMATION PROCESSING:
Architecture will go from crunching data to making sense of data; therefore,
eliminating our need to constantly input adjustments.
 ENHANCING EXPERIENCE:
As computers ubiquitously embed themselves in our environments, sensors and
actuators will create “smart” environments where architecture space will be goal
oriented.
 CONVERGENCE:
Much of our environment will be supplemented with interconnected digital
technologies.

LIMITATIONS
 Not entirely secure
 Frequent line connections that are broken
 Slow connections
 Very expensive operating costs

Pervasive Computing

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