Outline Introduction 1 1 Whats a Zig Bee

Outline • Introduction • 1. 1 What’s a Zig. Bee? • 1. 2 The Zig. Bee Alliance

• Zig. Bee aims for low data rates and a tiny stack that fits on 8 -bit microcontrollers. • Zig. Bee looks to control a light or send temperature data to thermostat(恆溫器). • Zig. Bee is designed to run for years, and the products can typically provide decade or more of use. • “Wireless Control That Simply Works”

Why Zig. Bee is ideally suited on the wireless control market? Ø Highly reliable Ø Cost-effective Ø Able to achieve very low power Ø Highly secure Ø An open global standard

1. 1 What’s a Zig. Bee? • Bluetooth is great at point-to-point. Zig. Bee is great at wireless control in multi-hop mesh network. TM

1. 1. 1 Zig. Bee Is Highly Reliable Zig. Bee achieves high reliability in a number of ways: p IEEE 802. 15. 4 with O-QPSK(Offset-Quadrature Phase. Shift Keying; 偏移四相相移鍵控) and DSSS(Direct Sequence Spread Spectrum; 直接序列展頻) p CSMA-CA(Carrier Sense Multiple Access Collision Avoidance; 載波偵測多重存取/避免碰撞) p 16 -bit CRCs(Cyclic Redundancy Check; 循環冗餘檢查) p Acknowledgments at each route p Mesh networking to find reliable route p End-to-end acknowledgments to verify data made it to the destination

1. 1. 2 Zig. Bee Is Cost-Effective ü Multiple silicon(矽) and stack vendors, Zig. Bee modules and many available resources all contribute to low development costs for Zig. Bee devices.

1. 1. 3 Zig. Bee Is Low-Power • The real secret to low power consumption in Zig. Bee, in addition to radios and microcontrollers that can sleep, is low duty cycle.

1. 1. 4 Zig. Bee Is Highly Secure Zig. Bee uses AES(Advanced Encryption Standard) 128 -bit for encryption and authentication. Why? u. It’s an internationally recognized and trusted standard. u. It’s free of patent infringements. u. It’s implementable on 8 -bit processor.

1. 1. 5 Zig. Bee Is an Open Global Standard • Multiple vendors offer Zig. Bee stacks, silicon and application solutions.

1. 1. 6 Zig. Bee Is Low Data Rate • In order to achieve low cost and low power, and considering the application space and markets Zig. Bee is aiming for. • Zig. Bee throughput is typically 25 kilobits per second.

1. 2 The Zig. Bee Alliance • http: //www. zigbee. org • The Zig. Bee Alliance is also the gatekeeper who enforces compliance and compatibility. • Zig. Bee Alliance membership is required in order to ship Zig. Bee technology in products.

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