Home networking with zig bee

Home networking with zig bee

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  Prepared by : Eyad R. Manaa Supervised by : Eng. Mahmoud El-Aff The Islamic University of Gaza Computer engineering Department 1 December 23,2010
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  Outlines  Introduction  What is ZigBee ?  ZigBee Features  What does ZigBee do?  ZigBee Advantages  ZigBee in Homes  How a ZigBee Network Works  ZigBee Network Configuration  Summary 2
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  Introduction  Wireless technologiesis already an integral part of our lives.  Bluetooth provides connectivity in a short range of devices.  WiFi is used for local area networks, thus it is consumes high power.  WiMAX provides wide area networking, thus it needs more power and high cost.  But we need in our homes technology that consumes low power and low cost and low data rate. 3
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   It is a Technological Standard created for Control and Sensor Networks  Based on the IEEE 802.15.4 Standard  Designed for low-power and low-data rate applications.  Like:  Monitoring applications.  Control applications.  Switching applications. 6
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   ZigBee networks has a capacity of connecting more than 65,000 devices through different networking topologies.  The data travel through this range from 20Kbps up to 250 Kbps.  ZigBee network covers a wide range from 10-40m.  Operates in Unlicensed Bands  2.4 GHz band is used worldwide.  868 MHz band is used in Europe.  915 MHz band used in North American. 7
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  Features IEEE 802.11b Bluetooth ZigBee Power Profile Hours Days Years for end devices Complexity Very Complex Complex Simple Nodes/Master 32 7 64000 Enumeration up to 3 Enumeration up to 10 Latency Enumeration 30ms seconds seconds Range 100 m Typically up to 100m Typically 70m-300m Extendability Roaming possible NO YES Data Rate 11Mbps 1Mbps 250Kbps (Usable ~ 20kbps) Authentication Service Set 128 bit AES and Application Security 64 bit, 128 bit ID (SSID) Layer user defined 8
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   Designed for wireless controls and sensors  Operates in Personal Area Networks (PAN’s) and device-to-device networks  Connectivity between small packet devices  Management of lighting, heating and cooling systems from anywhere in the home. 9
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  Example 10
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   Supports large number of nodes  Easy to deploy  Multiple vendors  Very long battery life  Secure (128 bit encryption)  Reliable and self healing  Low cost  Can be used globally (2.4GHz) 12
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  ZigBee Coordinator (ZC) – One required for each ZB network. – Initiates network formation. ZigBee Router (ZR) – Participates in multihop routing of messages. ZigBee End Device (ZED) – Does not allow association or routing. – Enables very low cost solutions 13
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   ZigBee’s Network layer supports three networking topologies: star, mesh, and cluster tree. 14
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  - Used inhome for the following applications :  Light switches and lights .  HVAC (Heating, Ventilating, and Air Conditioning) controls and thermostats .  Computers, TVs, and other electronic devices .  Smoke detectors and other safety equipment .  Alarm panels, motion sensors, and other security devices .  Electricity, water, and gas meters. 16
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  • Network Scan  Device scans the 16 channels to determine the best channel to occupy. • Creating/Joining a PAN  Device can create a network (coordinator) on a free channel or join an existing network • Device Discovery  Device queries the network to discover the identity of devices on active channels • Service Discovery  Device scans for supported services on devices within the network • Binding Devices communicate via command/control messaging 19
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   Thename ZigBee is said to come from the honey bee which uses a zig-zag type of dance to communicate important information to other hive members. 21
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   ZigBee is a technological standard created for control and sensor networks .  Based on the IEEE 802.15.4 Standard  Designed for low-power and low-data rate applications  ZigBee has a wide applications in heath and environment and homes and telecom  Management of lighting, heating and cooling systems from anywhere in the home.  ZigBee has many advantages as it is easy to deploy, consumes low power, its cost is very low and it is very secure. 22