Guided by: Mr. S v.rao Assistant Professor Department of Electronics
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Transcript of Guided by: Mr. S v.rao Assistant Professor Department of Electronics
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8/14/2019 Guided by: Mr. S v.rao Assistant Professor Department of Electronics
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Dept of Electronics and Communication, MBCET
Guided By:
Mr. S V.Rao
Assistant Professor
Department Of Electronicsand Communication , MBCET
Presented By:
Subin Abraham Mathew
Roll No : 51
S7 ECREG:05408033
Department Of Electronics and
Communication , MBCET
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Dept of Electronics and Communication, MBCET
Communication
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Dept of Electronics and Communication, MBCET
Internet
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Taking Wireless To Max
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Dept of Electronics and Communication, MBCET
WWAN
802.20 (proposed)
MAN70 Mbps
~50 Km
802.16a/e
WiMAXNew standard for
Fixed broadbandWireless.
WLAN11-54 Mbps
~100m
802.11a/b/g
Wi-Fi
Includes 802.11a/b/g.Products must beApproved forInteroperability by theWi-Fi Alliance. PAN
~1.5 Mbps
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Dept of Electronics and Communication, MBCET
The NeedThe Technology
The Wireless AspectModulation and CodingThe Applications and Topologies
India ConnectedCompeting TechnologiesConclusion
An Overview
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The Need
Dept of Electronics and Communication, MBCET
IMS : IP Multimedia SubsystemTotal ConnectivityBandwidth LimitationCostSpeed of Data Transfer
Last Mile Network
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Dept of Electronics and Communication,MBCET
The Technology
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Challenges for WiMAX
Dept of Electronics and Communication, MBCET
Problem Explanation
Non Line of Sight Coverage Interference, Multi-path fading
High Data Rate and Capacity Overcoming Intersymbol interface
Quality of Service Quadruple Play
Mobility Seamless Mobility
Portability Battery Life
Security Privacy
Low Cost Efficient & Reliable through IPArchitecture
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The Wireless Aspect
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Line-of-sight serviceA fixed dish antenna points straight
at the WiMAX tower from a rooftop
or pole.
66 GHz frequency rangeHigher frequencies, there is less
interference and lots more
bandwidth30-mile radius
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Non-line-of-sightA small antenna onyour computer
connects to the tower2 GHz to 11 GHz
frequency range
Limited to a 4-to-6
mile radius
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CODING AND MODULATION
Dept of Electronics and Communication, MBCET
OFDM TRANSMITTER
OFDM RECIEVER
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OFDM and OFDMA
Dept of Electronics and Communication, MBCET
Orthogonal Frequency-Division Multiplexing
Single User
Orthogonal Frequency-Division Multiple Access
Multiple User
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Architecture
Dept of Electronics and Communication, MBCET
IEEE 802.16 Defines the 4 layered Architecture shown
Point to Multi Point
Mesh Architecture
IP, ATM
Packing, Fragmenting
Authentication, Key Exchange
OFDM, Power Management
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Dept of Electronics and Communication, MBCET
WiMAX
Applications
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Wi-Fi
Dept of Electronics and Communication, MBCET
LAN 802.11g Wi-Fi
Out of Range
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WiMAX Mesh System
Dept of Electronics and Communication, MBCET
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India Connected
Dept of Electronics and Communication, MBCET
Nov 2007: India unveiled its plans for 3G spectrum auctionoutlined WiMAX rollout plans 2.3 and 3.3Ghz
Indian Market : Large, Developing and Cheap
Deployed Stations:Bangalore
Pune
Mumbai
Ahmadabad
Services Provided By:Bharathi
Reliance
BSNL
Tata
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Competing Technologies
Dept of Electronics and Communication, MBCET
TechnologySer vices
EVDO3GPP2
HSPA3GPP
Wi-Fi802.11
WiMAX802.16a ,16e
Band Width 1.25 MHz 5 MHz 20 MHz 1.5-20 MHz
Download3.1 or 4.9 Mbps 14Mbps 54Mbps-100Mbps 9.4 Mbps
Upload 1.2 Mbps 1.4Mbps 20Mbps 3.3, 6.5 Mbps
Modulation QPSK, 8PSK, 16QAM
QPSK16QAM
BPSK,QPSK16QAM
QPSK, 16 QAM,64 QAM
MultipleAccess
TDMCDMA
TDDCDMA
CSMA TDMOFDMA
Range 1-3Miles 1-3Miles 100 Ft -1000Ft 3-5 Miles
Mobility High High Low Medium
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Salient Features of WiMAXOFDM based Physical Layer
Very High Peak Data Rates 10 Mbps at 10 kmSupport TDD and FDDOFDMA Method UsedRobust SecuritySupport for MobilityIP-Based ArchitectureStandardized Network
Conclusion
Dept of Electronics and Communication, MBCET
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Challenges for WiMAX Overcome
Dept of Electronics and Communication, MBCET
Problem Solution
Non Line of Sight Coverage Channel Diversity, Coding
High Data Rate and Capacity OFDM , Adaptive Antennas
Quality of Service Complex MAC layer, IPconvergence
Mobility Seamless Handover, IP BasedNetwork
Portability Power Efficient Modulation,
Sleep Wake modes
Security Encryption, Authentication,Access control
Low Cost IP based protocol and LargeConsumer Service
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References
Dept of Electronics and Communication, MBCET
[1] WiMAX Forum
[2] IEEE 802.16 Working Group
[3] Fundamentals of WiMAXJ. Andrews, A. Ghosh, R. Muhamed -Prentice Hall
Edition 1
[4] http://www.intel.com/technology/wimax
[5] Mobile WiMAX PHY Layer Operation and ManagementAgilent Technologies
[6] Wikipedia http://en.wikipedia.org/wiki/Wimax[7] Wimax.com www.wimax.com/education/wimax/
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Dept of Electronics and Communication,MBCET
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MAC LAYERPoint-to-multipoint (PMP) with (CSMA/CA).Privacy key management (PKM) for MAC layer security
,Extensible authentication protocol (EAP).
Broadcast and multicast support.Manageability primitives.
High-speed handover and mobility management primitives.
Three power management levels, normal operation, sleep andidle.
Five service classes, unsolicited grant service (UGS), real-timepolling service (rtPS), non-real-time polling service (nrtPS),best effort (BE) and Extended real-time variable rate (ERT-VR)service.
Dept of Electronics and Communication,MBCET