1. Presents Seminar on “ ZigBee” By K.Gireesh 63,First floor, 5th Main Road, CIT Nagar, Nandanam, Chennai-35. Tel: 044-65253457 Mobile: 98405 77448 Website: www.vetechnologies.org Email: [email_address]

2. What is ZIGBEE Emerging standardized protocol for Ultra Low Power Wireless Personal Area Networks (WPANs) ZigBee is an established set of specifications for wireless personal area networking (WPAN) i.e, digital radio connections between computers and related devices. ZigBee is targeted at radio-frequency (RF) applications which require a low data rate, long battery life, and secure networking.

4. The ZigBee Alliance is an association of companies working together to enable reliable, cost-effective, low-power, wirelessly networked, monitoring and control products based on an open global standard.

9. IEEE 802 Wireless Space

11. ZigBee Vs Other Wireless Protocols

15. ZigBee Applications

16. Architecture These layers facilitate the features that make ZigBee very attractive: low cost, easy implementation, reliable data transfer, short-range operations, very low power consumption and adequate security features

17. ZigBee Alliance – IEEE- Customer Relations

18. Physical Layer

20. IEEE 802.15.4 Physical Layer Frequency Band

25. Network Pieces : PAN Coordinator PAN Coordinator • “ owns” the network • Starts it • Allows other devices to join it • Provides binding and address-table services • Saves messages until they can be delivered • And more… could also have i/o capability • A “full-function device” – FFD • Mains powered

26. Network Pieces : Router Routers • Routes messages • Does not own or start network • Scans to find a network to join • Given a block of addresses to assign • A “full-function device” – FFD • Mains powered depending on topology • Could also have i/o capability

27. Network Pieces : End Devices End Device • Communicates with a single device • Does not own or start network • Scans to find a network to join • Can be an FFD or RFD (reduced function device) • Usually battery powered

30. Network Topologies

31. ZigBee Network Formation

33. ZigBee Network Model

34. ZigBee Mesh Networking

38. Data Transfer Model Data transferred from device to coordinator • In a beacon-enable network, device finds the beacon to synchronize to the super-frame structure. Then using slotted CSMA/CA to transmit its data. • In a non beacon-enable network, device simply transmits its data using un-slotted CSMA/CA

39. Data transferred from coordinator to device • In a beacon-enable network, the coordinator indicates in the beacon that “ data is pending .” • Device periodically listens to the beacon and transmits a MAC command request using slotted CSMA/CA if necessary.

40. THANK YOU