simulation on zigbee

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Simulation on ZigbeeWireless Network

Performance

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2005.06.1

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Outline

� Introduction

� Two previously proposed measurement

� Design of analysis

� Reference & related work



Introduction

� Evaluate Zigbee(802.15.4) technology

Low energy consume

Low data rate

� Using simulator to analyze performance of Zigbee.



Two previous work

� Performance Evaluation of the IEEE802.15.4 MAC for Low-Rate Low-PowerWireless Networks

� Analysis of the performance of IEEE802.15.4 for medical sensor body area

networking



Performance Evaluation of the IEEE802.15.4 MAC for Low-Rate Low-Power

Wireless Networks� NS-2 network simulator + CMU wireless extension� Radio characteristics:

� 7 × 7 grid with 4m between nodes, node at center iscoordinator.

� Simulation are run independently.� The result is averaged under 10 different seeds.� Sources generate packets at constant average rate

with 50% randomization in inter-packet interval.




Wireless Networks� CSMA-CA in CAP

Throughput for different numbers of sources

Delivery ration for different numbers of sources

� Duty Cycle

Delay as a function of duty cycle

E nergy consumption of source device as a function of duty cycle




Wireless Networks� Guaranteed Time Slots: performance under

different background traffic

latency

Energy Delivery ratio

� Synchronization

Energy cost with tracking and non-tracking



Analysis of the performance of IEEE802.15.4 for medical sensor body area

networking

� The star network consisted of thecoordinator and 10 body implanted sensors

� Transceiver parameters (chipcon CC2420)

� The CSMA/CA performance will be shownfor much larger networks.




networking

� CSMA-CA Effect

In beacon or non-beacon networks

Average number of back-off periods for number of sensors

Average number of back-off periods for upload /download rate per hour

� GTS Effect

GTS timeslot on sensor lifetime.




networking

� Node lifetime in beacon networks

In both beacon and non-beacon networks

Crystal tolerance on symmetric sensor lifetime with communication rate 1/hr.

Crystal tolerance on asymmetric sensor lifetime with fixed packet size of 1000 bits and 1/hr download rate.



Design of analysis

� Measurement

BER ( Bit Error Rate )

� Rate of correct transmission

Latency

� Delay time

Retransmission times



Design of analysis

� Scope Variable

Single-hop

Multi-hop

� Environment variable Indoor

Outdoor

� Other variable

Node number

Packet size

Transmission channel



Reference

� G. Lu et al., ³Performance evaluation of theIEEE 802.15.4 MAC for low-rate low-powerwireless networks,´ in IEEE International Conference on Performance, Computing, and Communications (IPCCC), 2004.

� N. Timmons and W. Scanlon, ³Analysis of the performance of IEEE 802.15.4 for

medical sensor body area networking,´ IEEE Sensor and Ad Hoc Communications and Networks Conference (SECON), 2004.



Reference

� Jon Adams, ³Meet the ZigBee Standard´, 2004 onhttp://www.sensorsmag.com/articles/0603/14/.

� Andreas Andersson, and Mattias Thoren, ³Z IGBEE, ASUITABLE BASE FOR EMBEDDED WIRELESS DEVELOPMENT?´ , 2005 Chalmers technology report.

� Ed Callaway, P. Gorday, L. Hester, J.A. Gutierrez, M.Neave, B. Heile, V. Bahl, "Home networking withIEEE 802.15.4: A developing standard for low-ratewireless personal area networks," IEEE Communication Magazine, vol. 40, no. 8, pp. 70-77,August 2002.

� William C. Craig, ³Z igbee: ³Wireless Control That Simply Works´ , 2004 on www.zigbee.org.

� Becta TeckNews February 2005



Related work

� George Karayannis slides, ³EmergingWireless Standards Understanding the Roleof IEEE 802.15.4 & Z igBee in AMR &Submetering´ , 2003 on www.zigbee.org.

simulation on zigbee

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