A Comparative Study of Wireless Protocols: Bluetooth, UWB, ZigBee, and WiFi - PowerPoint PPT Presentation

Loading...

PPT – A Comparative Study of Wireless Protocols: Bluetooth, UWB, ZigBee, and WiFi PowerPoint presentation | free to download - id: 733f5e-NjM5N



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

A Comparative Study of Wireless Protocols: Bluetooth, UWB, ZigBee, and WiFi

Description:

Introduction. The short-range wireless scene is currently held by four protocols. Bluetooth - IEEE 802.15.1. UWB - IEEE 802.15.3. ZigBee - IEEE 802.15.4 – PowerPoint PPT presentation

Number of Views:79
Avg rating:3.0/5.0
Slides: 20
Provided by: ackr
Learn more at: http://csi.dgist.ac.kr
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: A Comparative Study of Wireless Protocols: Bluetooth, UWB, ZigBee, and WiFi


1
A Comparative Study of Wireless Protocols
Bluetooth, UWB, ZigBee, and WiFi
  • Jin-Shyan Lee, Yu-Wei Su, and Chung-Chou Shen
  • Information Communications Research Labs
  • Industrial Technology Research Institute (ITRI)
  • Hsin chu, Taiwan

2
OUTLINE
  • Introduction
  • Wireless Protocols
  • Bluetooth
  • UWB
  • ZigBee
  • WiFi
  • Comparative study
  • Protocol complexity and Power consumption

3
Introduction
  • The short-range wireless scene is currently held
    by four protocols
  • Bluetooth - IEEE 802.15.1
  • UWB - IEEE 802.15.3
  • ZigBee - IEEE 802.15.4
  • WiFi - IEEE 802.11a/b/g

4
Wireless protocols
5
Bluetooth over IEEE 802.15.1
  • Wireless radio system designed for short-range
    and cheap devices to replace cables for computer
    peripherals
  • Piconet
  • All devices participating in communications in a
    given piconet are synchronized using the clock of
    the master.
  • Slaves communicate only with their master in a
    point-to-point fashion under the control of the
    master.
  • Scatternet
  • A collection of operational Bluetooth piconets
    overlapping in time and space.
  • Two piconets can be connected to form a
    scatternet.

6
UWB over IEEE 802.15.3
  • Short-range high-speed wireless communication
  • Bandwidth is over 110 Mbps (up to 480 Mbps) which
    can satisfy most of the multimedia applications

7
ZigBee over IEEE 802.15.4
  • Low-rate WPAN for supporting simple devices that
    consume minimal power
  • Typically operate in the personal operating space
    of 10m
  • Self-organized, multi-hop, and reliable mesh
    networking with long battery lifetime
  • Two different device types
  • Full-function device (FFD)s acting as network
    coordinators will have the ability to send
    beacons and offer synchronization, communication
    and network join services
  • Reduced-function device (RFD)s can only act as
    end devices and are equipped with sensors like
    light switches and lamps

8
WiFi over IEEE 802.11a/b/g
  • It allows users to surf the internet at broadband
    speeds when connected to an AP or in ad hoc mode.
  • Basic Service Set (BSS) is defined as a group of
    stations that are under the direct control of a
    single coordination function.
  • Independent Basic Service Set (IBSS) is the
    formal name of an ad-hoc network in the IEEE
    802.11 standard.
  • Distribution System (DS) is architectural
    component used to interconnect BSSs

9
Comparative study
10
(No Transcript)
11
Radio Channels
  • Bluetooth uses frequency hopping (FSSS) with 79
    channels and 1 MHz bandwidth.
  • ZigBee uses direct sequence spread spectrum
    (DSSS) with 16 channels and 2 MHz bandwidth.
  • WiFi uses DSSS (802.11), complementary code
    keying (CCK, 802.11b), or OFDM modulation
    (802.11a/g) with 14 RF channels and 22 MHz
    bandwidth.
  • UWB uses the 3.1-10.6 GHz, with an unapproved and
    jammed 802.15.3a standard, of which two spreading
    techniques, DS-UWB and MB-OFDM, are available.

12
Coexistence Mechanism
  • Bluetooth and UWB provide adaptive frequency
    hopping to avoid channel collision.
  • ZigBee and WiFi use dynamic frequency selection
    and transmission power control.
  • IEEE 802.15.2 discussed the interference problem
    of Bluetooth and WiFi.
  • Shuaib et al. focused on quantifying potential
    interferences between Zigbee and IEEE 802.11g by
    examining the impact on the throughput
    performance of IEEE 802.11g and Zigbee devices
    when coexisting within a particular environments
    11.
  • Neelakanta and Dighe presented a performance
    evaluation of Bluetooth and ZigBee collocated on
    an industrial floor for robust factory wireless
    communications 12.
  • 11 K. Shuaib, M. Boulmalf, F. Sallabi, and A.
    Lakas, "Co-existence of Zigbee and WLAN A
    performance study," in Proc. IEEEIIFIP Int. Conf
    Wireless Optical Communications Networks,
    Bangalore, India, April 2006.
  • 12 P. S. Neelakanta and H. Dighe, "Robust
    factory wireless communications A performance
    appraisal of the Bluetooth and the ZigBee
    collocated on an industrial floor," in Proc. IEEE
    Int. Conf Ind. Electron. (IECON'03), Roanoke, VA,
    Nov. 2003, pp. 2381-2386.

13
Transmission Time
  •  

14
Data Coding Efficiency
  •  

15
Protocol complexity and power consumption
16
Protocol Complexity
  • The Bluetooth is the most complicated protocol
    with 188 primitives and events in total.
  • The simplicity makes ZigBee very suitable for
    sensor networking applications due to their
    limited memory and computational capacity.

17
Power Consumption
18
Power Consumption
  • Bluetooth and ZigBee are suitable for low data
    rate applications with limited battery power
    (such as mobile devices and battery-operated
    sensor network), due to their low power
    consumption leading to a long lifetime.
  • On the other hand, for high data rate
    implementations (such as audio/video surveillance
    systems), UWB and Wi-Fi would be better solutions
    because of their low normalized energy
    consumption.

19
Thank you
About PowerShow.com