Wireless networks - Lecture 41: IEEE 802.15.4/ZigBee. The main topics covered in this chapter include: overview of ZigBee; IEEE 802.15.4; channel access mechanisms; data transfer model; superframe structure; ZigBee/IEEE 802.15.4 market feature; ZigBee target markets; ZigBee/802.15.4 architecture;...
Wireless Networks Lecture 41 IEEE 802.15.4/ZigBee Dr Ghalib A Shah Outlines Overview of ZigBee ► Whats is ZigBee, Zigbee in Wireless World, Architecture, Characteristics IEEE 802.15.4 ► ► ► ► Basics, Type of Devices Topology, Addressing Phy Layer Channel Access Mechanisms • Slotted/Unslotted CSMA/CA ► Data Transfer Model ► Superframe Structure Last Lecture IP Over Bluetooth Bluetooth Security WPAN Standards IEEE 802.15.3 Overview 802.15.3 ► ► Topology Coordination • • • • • ► ► ► ► Starting a Piconet Handing over control of piconet Creating child piconet Ending a Piconent Association/Disassociation Medium Access (Superframe) Channel Time Management Power management MAC Frame format What is ZigBee Alliance? An organization with a mission to define reliable, cost effective, low-power, wirelessly networked, monitoring and control products based on an open global standard The alliance provides interoperability, certification testing, and branding IEEE 802.15.4: What is ZigBee? A standard for mesh networking ► Designed for low power applications ► 20-250Kb/sec (depending on band) Very Secure ► Very long battery life Low data rate ► Reliability through meshed connectivity AES-128 encryption available Self configuring ► ► Allows ad hoc networks Ease of installation and configuration ZigBee in the wireless world Chart Copyright ZigBee Alliance 2004 ZigBee/IEEE 802.15.4 Market Feature Low power consumption Low cost Low offered message throughput Supports large network orders (