Pervasive Computing is a technology that pervades the users‟ environment by making use of multiple independent information devices (both fixed and mobile, homogeneous or heterogeneous) interconnected seamlessly through wireless or wired computer communication networks which are aimed to provide a class of computing / sensory /communication services to a class of users, preferably transparently and can provide personalized services while ensuring a fair degree of privacy / non-intrusiveness.
It may also be seen as the as the technology that is a combination of Personal computing technology and one or more of the following:
•Internetworking technology
•Invisible computing technology
•Wearable computing technology
•Mobile Computing Technology
Elements of Pervasive Computing Systems
Components of Infrastructure for Pervasive Computing include Mobile computing devices, Fixed computing devices, Multimode RF Mobile communication infrastructure <Fixed-to-Mobile and Mobile-to-Fixed communication system interfaces>,Trust system (security and privacy), Protocol stacks and Personalized service frameworks.
What should the Infrastructure provide?
•Pervasive Computing Infrastructure has to comprise of computing elements, communicating elements, sensors, actuators, and interface devices
•Computation to be available widely and freely (not free of cost).
•Intermittent connectivity has to be a supported feature due to physical limitations pertaining to power, cost, bandwidth and network congestion.
•Bluetooth and other choices address small-distance networking issues and allow intermittent connection. •The infrastructure has to offer seamless connectivity to the devices /entities / services.
•It has to support placement and location of uniquely identifiable “information tags / track able tags” to all devices / entities in the Pervasive Computing environment.
•User‟s environment must be able to be aware of the user‟s context. Roaming Environment: An environment that allows connectivity and communication to the services outside the home zone is called a Roaming Environment. Some sample devices that may involve Roaming-based access <fixed / mobile roaming>:
•PDAs / Palmtops / Pocket PCs / Cell phones / Smart phones / WAP Phones
•Laptops / Tablet PCs / Notebook PCs
•Desktop PCs / Servers / Web TVs
•Kiosks
•Invisible computing devices / Smart interactive posters
•Wearable computers
It may also be seen as the as the technology that is a combination of Personal computing technology and one or more of the following:
•Internetworking technology
•Invisible computing technology
•Wearable computing technology
•Mobile Computing Technology
Elements of Pervasive Computing Systems
Components of Infrastructure for Pervasive Computing include Mobile computing devices, Fixed computing devices, Multimode RF Mobile communication infrastructure <Fixed-to-Mobile and Mobile-to-Fixed communication system interfaces>,Trust system (security and privacy), Protocol stacks and Personalized service frameworks.
What should the Infrastructure provide?
•Pervasive Computing Infrastructure has to comprise of computing elements, communicating elements, sensors, actuators, and interface devices
•Computation to be available widely and freely (not free of cost).
•Intermittent connectivity has to be a supported feature due to physical limitations pertaining to power, cost, bandwidth and network congestion.
•Bluetooth and other choices address small-distance networking issues and allow intermittent connection. •The infrastructure has to offer seamless connectivity to the devices /entities / services.
•It has to support placement and location of uniquely identifiable “information tags / track able tags” to all devices / entities in the Pervasive Computing environment.
•User‟s environment must be able to be aware of the user‟s context. Roaming Environment: An environment that allows connectivity and communication to the services outside the home zone is called a Roaming Environment. Some sample devices that may involve Roaming-based access <fixed / mobile roaming>:
•PDAs / Palmtops / Pocket PCs / Cell phones / Smart phones / WAP Phones
•Laptops / Tablet PCs / Notebook PCs
•Desktop PCs / Servers / Web TVs
•Kiosks
•Invisible computing devices / Smart interactive posters
•Wearable computers
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