wateen presentation on wimax
TRANSCRIPT
WIMAX
Wateen Telecom 0-04-2008
What is Wimax?
Wimax is Worldwide interoperability for microwave access.
Wimax is IEEE 802.16 standard based technology.
IEEE 802.16 is a standard and does not identify the types of services that it can support. Services and data speeds are defined by the service provider. What WiMAX does is provide the ability to seamlessly offer any type of service over a large metropolitan area. Typically these services include voice over IP (VOIP), data, and streaming video.
• Enables delivery of ‘last mile’ wireless broadband access
• An alternative to wired broadband services like Cable, DSL
• Targets two types of user markets: Fixed and Mobile
World wide subscriber growth for mobile telephony, internet usage and broadband access
WORKING
Line of Sight (LOS)
Antenna & WiMAX tower in line Stronger & more reliable Supports very high data rates Frequencies reaching up to 66GHz Less interference & lot of bandwidth LOS for Backhauling always
Non Line of Sight (NLOS)
Antennas not in line Small size antennas Indoor & outdoor installed CPEs Low frequency range, 2 – 11 GHz Less disruption at lower freq. Low data rates as compared to NLOS
High DataHigh DataRatesRates
ScalabilityScalability
MobilityMobility
SecuritySecurity
Support for operation in different frequency bands and Support for operation in different frequency bands and ChannelizationsChannelizations. Flexible frequency planning; Macro, Micro,. Flexible frequency planning; Macro, Micro,
Pico cell supportPico cell support
QoSQoS Traffic types, Traffic types, QoSQoS with Service Flows, Advanced Schedulingwith Service Flows, Advanced SchedulingFramework, Adaptive Modulation & Coding, ARQ, HFramework, Adaptive Modulation & Coding, ARQ, H--ARQ ARQ
EAP authentication, Encryption with AESEAP authentication, Encryption with AES--CCM, CCM, CMAC Authentication mode, X.509 Certificates, Key Binding,CMAC Authentication mode, X.509 Certificates, Key Binding,
Device and User authentication capabilityDevice and User authentication capability
Secure Optimized Hard Handover, Secure Optimized Hard Handover, Fast BS Switching Handover, Fast BS Switching Handover,
Power Management with Sleep and Idle modesPower Management with Sleep and Idle modes
OFDM to support higher PHY rates, Larger MAC frames with OFDM to support higher PHY rates, Larger MAC frames with low overhead, Advanced FEC, Adaptive modulation, low overhead, Advanced FEC, Adaptive modulation,
HH--ARQ, MIMO and ARQ, MIMO and BeamformingBeamforming supportsupport
High DataHigh DataRatesRates
ScalabilityScalability
MobilityMobility
SecuritySecurity
Support for operation in different frequency bands and Support for operation in different frequency bands and ChannelizationsChannelizations. Flexible frequency planning; Macro, Micro,. Flexible frequency planning; Macro, Micro,
Pico cell supportPico cell support
Support for operation in different frequency bands and Support for operation in different frequency bands and ChannelizationsChannelizations. Flexible frequency planning; Macro, Micro,. Flexible frequency planning; Macro, Micro,
Pico cell supportPico cell support
QoSQoS Traffic types, Traffic types, QoSQoS with Service Flows, Advanced Schedulingwith Service Flows, Advanced SchedulingFramework, Adaptive Modulation & Coding, ARQ, HFramework, Adaptive Modulation & Coding, ARQ, H--ARQ ARQ
Traffic types, Traffic types, QoSQoS with Service Flows, Advanced Schedulingwith Service Flows, Advanced SchedulingFramework, Adaptive Modulation & Coding, ARQ, HFramework, Adaptive Modulation & Coding, ARQ, H--ARQ ARQ
EAP authentication, Encryption with AESEAP authentication, Encryption with AES--CCM, CCM, CMAC Authentication mode, X.509 Certificates, Key Binding,CMAC Authentication mode, X.509 Certificates, Key Binding,
Device and User authentication capabilityDevice and User authentication capability
EAP authentication, Encryption with AESEAP authentication, Encryption with AES--CCM, CCM, CMAC Authentication mode, X.509 Certificates, Key Binding,CMAC Authentication mode, X.509 Certificates, Key Binding,
Device and User authentication capabilityDevice and User authentication capability
Secure Optimized Hard Handover, Secure Optimized Hard Handover, Fast BS Switching Handover, Fast BS Switching Handover,
Power Management with Sleep and Idle modesPower Management with Sleep and Idle modes
Secure Optimized Hard Handover, Secure Optimized Hard Handover, Fast BS Switching Handover, Fast BS Switching Handover,
Power Management with Sleep and Idle modesPower Management with Sleep and Idle modes
OFDM to support higher PHY rates, Larger MAC frames with OFDM to support higher PHY rates, Larger MAC frames with low overhead, Advanced FEC, Adaptive modulation, low overhead, Advanced FEC, Adaptive modulation,
HH--ARQ, MIMO and ARQ, MIMO and BeamformingBeamforming supportsupport
OFDM to support higher PHY rates, Larger MAC frames with OFDM to support higher PHY rates, Larger MAC frames with low overhead, Advanced FEC, Adaptive modulation, low overhead, Advanced FEC, Adaptive modulation,
HH--ARQ, MIMO and ARQ, MIMO and BeamformingBeamforming supportsupport
Mobile WiMAX Salient Features
IEEE 802.16 IEEE 802.16a/ Rev’d IEEE 802.16e
Completed December 2001 May 2004 Est. Mid-2005
Spectrum 10 - 66 GHz 2 – 11 GHz 2 - 6GHz
Application Backhaul Wireless DSL and Backhaul
Mobile Internet
Channel Conditions Line of Sight Only Non-Line of Sight Non-Line of Sight
Bit Rate 32 – 134 Mbps at 28 MHz Channelization
Up to 75 Mbps at 20 MHz Channelization
Up to 15 Mbps at 5 MHz Channelization
Modulation QPSK,16QAM and 64QAM
OFDM 256,OFDMA 2048
QPSK,16QAM,64QAM
Same as 802.16d,Scalable
OFDMA
Channel Bandwiths 20,25 and 28 MHz Selectable Channel Bandwidths Between
1.5 and 20 MHZ
Same as 802.16d
Standard Type of network Industry Group
IEEE 802.11 Wireless LAN
IEEE 802.15 Wireless PAN IEEE 802.16 Wireless MAN
Formation of WiMAX Forum
IEEE developed the technical specs for the 802.16 standard, but left the task for the industry to evolve it into a certifiable and interoperable solution
and thus, WiMAX Forum was founded … in June 2001
WiMAX Forum
A non profitable organization comprised of
Broadband Wireless Equipment Manufactures• Telecom System Integrators• Component Suppliers (Silicon, RF, Antenna, Software)• Service Providers (DSL Operators, WISPs)
Their Charter
• To certify equipments that conform to the IEEE 802.16• Facilitate the development of WiMAX network• Develop process to certify compatibility and interoperability of wireless products
• Over 200 hundred members of the forum• 36 membership processing
Some WiMAX Forum member Companies:
Presently, more than 520 companies are member of the WiMAX Forum
Mobile WiMAX vs 3G Cellular Technologies
WiMAX is designed for broadband services; mobility is an add-on Cellular tech. are designed for mobility; broadband is add-on feature
Mobile WiMAX has some advantages:
Multipath tolerance (OFDM)
Scalable channel bandwidth
Well-refined QoS
Advanced Antenna Technology support
Where does WiMAX stand among other wireless technologeis?
2x2 MIMO, 10MHz channel
Poor CSMA based MAC results in much lower throughputs
Data rates of various cellular and mobile technologies:
WIMAX NETWORK MODEL
The network reference model envisions a unified network architecture for supporting fixed, nomadic, and mobile deployments and is based on an IP service
model. The overall network may be logically divided into three parts:
1-Mobile Stations (MS) used by the end user to access the network 2-The access service network (ASN), which comprises one or more base stations and one or more ASN gateways that form the radio access network at the edge 3-Connectivity service network (CSN), which provides IP connectivity and all the IP core network functions.
NSP
NAP
R1 R3
MSS
R2
ASN CSN
ASP Netw ork ORInternet
R4
Another ASN
ASN
ASN GW
R6
BS
BS
R8
R1
R3
R4
CSN and ASN support the delivery and authentication of mobile Wimax subscribers.ASN Gateway sits between Radio and IP network. ASN Gateway is not a simple router as it have a lot of functionalities. The ASN gateway typically acts as a layer 2 traffic aggregation point within an ASN.R6 interface is very important as it connects the BS and ASN Gateway.The CSN is responsible for IP address management, support for roaming between different NSPs, location management between ASNs, and mobility and roaming between ASNs.
WiMAX Layer Architecture
Access point
User
Time Division Duplex
Frequency division Duplex
Modulation Scheme WiMAX employs Adaptive Modulation Modulation is selected according to SNR in a radio link Highest modulation scheme used when SS is very close to BS, giving higher thru puts i.e. 64 QAM Lowest modulation scheme used when SS is farthest away from BS, giving lowest thru put but maintain connectivity i.e. BPSK This allows overcoming time selective fading and makes it possible in NLOS scenario to maintain connectivity & trading off between the range and the data rate 64QAM, 16QAM, QPSK & BPSK modulation schemes are generally employed
Advanced Antenna Technology Adaptive Antenna System (AAS)
Beamforming Space-Time Coding (STC) Spacial Multiplexing/MIMO
Use multiple transmit and multiple receive antennas for a single user
User data streamUser data stream
.
.
1
2
MT
.
.
.
1
2
MR
.
.
.
.
.
channel User data streamUser data stream
.
.
1
2
MT
.
.
.
User data stream
.
.
User data stream
.
.
1
2
MT
.
.
.
1
2
MR
.
.
.
1
2
MR
.
.
.
.
.
.
.
channel
MIMO Antenna Configuration
Now this system promises enormous data rates!
For large bandwidths TDMA and CDMA suffer from inter-symbol-interference in larger cells
Large bandwidth = small symbol duration
Symbols gets smaller and channel does not change
How to combat frequency selective fading?
parallel orthogonal flat narrowband channels
Orthogonal subcarriers (downlink and uplink), high spectral efficiency
Efficient MIMO implementationOFDMA is a cost-effective OFDMA is a cost-effective
technology for Mobile Internettechnology for Mobile Internet
Key Radio Technology: OFDMA
Quality of Service (QoS)
Grant – request mechanism allocates a small portion of each transmitted frame as a contention slot. SS can enter the network by asking BS for an uplink slot More robust and reliable as compared to CSMA/CD & CSMA/CA
WATEEN TELECOM
Wateen Telecom, Pakistan’s largest communication company in the private sector has become the detrimental catalyst that has rampantly moved forward the country into a digital revolution with its ability to seamlessly connect and enable smarter, faster, cost-effective and flexible communication solutions to reach its valued customers.
WATEEN VISION
To launch Pakistan into the 21st century digital revolution by providing complete communication solutions to Telecom Operators, Corporate, Consumers and to be the leading “Carriers’ Carrier” by creating a world-class cutting-edge network to deliver a broad range of reliable, affordable and quality customer-centric services.
WATEEN MISSIONTo provide affordable communication services that meets and exceeds customers' requirements. To deliver high-quality, flexible and innovative solutions that are cost effective and conducive. To provide complete customer satisfaction on time, every time. WIMAX MOTOROLA SOLUTION
To provide a level of user experience unmatched by any other carrier in Pakistan,Wateen Telecom chose Motorola’s WiMAX and IMS Core technology to provide wireless broadband voice and data services for residential and corporate use. WithMotorola’s global experience and support, Wateen installed its WiMAX network in 22 major cities within just nine months and continue to deploy a network placing Wateen as the premier service provider in Pakistan.In June 2008,Wateen will provide services upto 100 cities in Pakistan.
“In choosing Motorola, Wateen did not only focus on the technology and technical expertise of Motorola, we looked at their capability to deliver an end to end service. ( Shahid Miah, CTO Wateen Telecom, March, 2007.)
Wateen and Motorola won NMEI awards for technology innovationAt the third annual Network Middle East Innovation Awards held inDubai on April 2, 2007, Wateen was presented an award for best Wireless Access Network (WAN) implementation as the best example of a success ful wide-area networking project in the Middle East. In addition, Motorola was honored in the Best Telco/Service Provider category for its MOTOwi4 WiMAX technology.
SERVICES OFFER BY WATEEN
Wateen Telecom is the first company in the world to roll-out a WiMAX network at a country-wide scale. With Wateen's WiMAX network, you get access to:
Broadband Internet with up to 2Mbps dedicated speeds
Telephony with over 40 value added features
Fully secure high-speed data networks
Subscribers can use advanced telephony, surf the Internet at super-fast speeds, make video calls, and watch IP-TV through the comfort and ease afforded by a single connection
NETWORK DESIGN
INPUT BUSINESSSITE PROPOSINGSURVEYDEPLOYMENTSIMULATION