Understanding , a.k.a. ZigBee/MiWi

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Presentation transcript:

Understanding 802.15.4, a.k.a. ZigBee/MiWi Day 1: What is 802.15.4? November 4, 2013 Fred Eady

Understanding 802.15.4, a.k.a ZigBee/MiWi AGENDA 802.15.4 Overview 802.15.4 Architecture 802.15.4 PHY (Physical Layer) 802.15.4 MAC (Medium Access Control) 802.15.4 Devices 802.15.4 Networks Tools First Contact

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 OVERVIEW For use in Low Power/Low Data Rate Apps Consists of Low Cost Hardware Data Rate – Maximum of 250 kb/s Peer-to-Peer or Star Network Topology Short Range Communications Reliable Data Delivery 868 MHz Operation in Europe 915 MHz Operation in the United States 2.4 GHz Operation World Wide

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 Architecture

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 PHY Provides an Interface Between the MAC Layer and the Physical Radio Channel Activates/Deactivates the Transceiver Performs Channel Selection Performs Energy and Signal Management Provides Data Transmission Service Provides Data Reception Service Typically Implemented in Silicon

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 PHY

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 MAC Provides an Interface to the Physical Layer Manages Access to the Network Provides Packet Validation Supports Star and Peer-to-Peer Networks Manages Association Provides Acknowledged Frame Delivery Manages Time Slots and Beacons

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 MAC

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 Devices Full Function Device (FFD) Normally Connected to Mains Power Operates In Any Network Topology Can Act as a Router Can Act as a PAN Coordinator Can Communicate With Any Node

Understanding 802.15.4, a.k.a ZigBee/MiWi 802.15.4 Devices Reduced Function Device (RFD) Normally Powered by Batteries Operates In Star Network Topology Only Cannot Act as a Router Cannot Act as a PAN Coordinator Can Only Communicate with the Coordinator

Understanding 802.15.4, a.k.a ZigBee/MiWi STAR TOPOLOGY

Understanding 802.15.4, a.k.a ZigBee/MiWi PEER-to-PEER TOPOLOGY

Understanding 802.15.4, a.k.a ZigBee/MiWi CLUSTER-TREE TOPOLOGY

Understanding 802.15.4, a.k.a ZigBee/MiWi Tools Microchip MRF24J40 Radio Utility Driver Program Wireshark EXEGIN Q51 ZigBee Transceiver Microchip PICDEM Z Development Kit Microchip REAL ICE

Understanding 802.15.4, a.k.a ZigBee/MiWi

Understanding 802.15.4, a.k.a ZigBee/MiWi

Understanding 802.15.4, a.k.a ZigBee/MiWi

Understanding 802.15.4, a.k.a ZigBee/MiWi

Understanding 802.15.4, a.k.a ZigBee/MiWi FIRST CONTACT >>D Please enter the packet you want to transmit. Use all uppercase HEX values starting from the frame control (no length) Press '=' when you are done. >>0108C4FFFFFFFF44455349474E204E455753 Packet Transmission - Success Returning to the main menu.

Understanding 802.15.4, a.k.a ZigBee/MiWi

Understanding 802.15.4, a.k.a ZigBee/MiWi SPLASH 1! Summary of Day 1 Topics: 802.15.4 MAC and PHY Architecture The Capabilities of FFD and RFD Devices The Available Network Topologies How to Manually Assemble an 802.15.4 Packet How to Pull 802.15.4 Traffic Out of the Air