Q$1.$ Set $($B$)$: Suppose that you are required to design a system to track the movement of equipments inside an office building using a wireless or hybrid wireless$/$wired network. The number of office buildings, rooms and number of floors in the building are scalable. A smart card will be attached to the equipment to enable monitoring. Information about all the equipments and the buildings in which they are installed will be available at a central location. The equipments cannot be moved across buildings. Authorized personal should be able to query for any equipment at any time and near real$-$time info should be available and can be access through a dedicated application designed for viewing.

On querying it should be possible to to receive location updates about the node at an interval of $30$seconds till the query is terminated. Periodic data is not collected from equipments and only on$-$demand data collection is made. Note if there are $$x$$ equipments per floor of a building, $\mathrm{.}05$x additional nodes may be deployed to have internet access. There will be atleast $100$ nodes per floor. Smart cards will not have direct access to internet.

i$)$ Mention the overall network architecture for achieving the same. You can draw a diagram to illustrate the same. All wired$/$wireless networks selected $($including the type of communication technology should be indicated$)$

ii$)$ Mention the deployment strategy of gateways$/$routers $($if required$)$ additional nodes within floor, rooms, corridors, or any other place as per the demands of the application.

iii$)$ Mention specific design objectives$/$optimization goals for the network if any

iv$)$ Mention the layers of the OSI reference model which is required in the nodes $($tags and any other type of mote used in the system$)$

v$)$ Mention the required protocols such as time$-$sync$,$ localization, routing, Medium access, and so on$..$Application layer protocol need not be mentioned. $[25$ Marks$]$ SCAN and UPLOAD

Note: Design aspects $($deployment$,$ nodes, protocol selection, design considerations, how the objectives are met, various technologies$)$ should be detailed as much as possible. The choices should be well justified. Mention relavant aspects which justifies its use in the design. Highlight assumptions if any