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Standards
802.16802.16a-802.16d
802.16e
ETSI HyperMAN
WiBro
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Variable bandwidthInteroperability
Advanced antenna techniques
Strong Security
Multiple QoSOFDM
MIMO
Advanced coding techniques
Coverage
TDD & FDD
Features
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Wi-Max Activities
Backend Readiness and expertise .CW Testing & Model Tuning
RF Planning based on Usage Model(I,II,III,IV)
Site Survey & accessibility to CORE N/WFeasibility of Surveyed Option
Readiness for Tower & other accessibilities
Backhaul connectivity check
Database creation and operational Check
Drive test & Quality Check
KPI Achievement .
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SS/MS:SubscriberStation/Mobile Station
ASN: Access Service NetworkASN-GW: the ASN Gateway, part of the ASN
CSN:ConnectivityService NetworkHA: Home Agent, part of the CSN
AAA:Authentication, Authorization and Accounting Server, part of the CSNNAP:Network Access Provider
NSP:Network Service Provider
WIMAX BACKHAUL ARCHITECTURE
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BS
SS1
SS2
1
2.1
2.2
1. BS allocates bandwidth to SSs fortransmitting bandwidth request.
2.1SS1 transmits bandwidth requests.
2.2SS2 transmits bandwidth requests.
4. BS allocates bandwidth to SSs for
transmitting data based on theirbandwidth
requests. Bandwidth is also allocated for
requesting more bandwidth.
5.1SS1 transmits data and bandwidth
requests.
5.2SS2 transmits data and bandwidth
requests.
4
5.1
5.2
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Protocol Architecture
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Backhaul Connectivity Strategy
To check the accessibility and connectivity atsurvey phase for POI or Microwave.
Backhaul Feeding
Point-to-point link for fixed infrastructure
Fixed Wireless AccessWireless local loop for hot-spot feeding
Nomadic Access
CPEs in hot-zone access the service directly
Portable/Mobile Access
Handover function enabling mobile datafeeding
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Mobile versus Fixed
Mobile WiMAX- based on IEEE802.16e standard
For both fixed and mobile applications
with improved performance and capacity
while adding full mobility.
Fixed WiMAX- based on IEEE802.16a standard
Suitable for delivering wireless last
mile access for fixed broadband
services, like DSL or cable modem
service.
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IP based WiMAXseparation of the access architecture from the IP connectivity service.
organization in a hierarchical, flat, or mesh topology.support of fixed, nomadic, and mobile subscribers.
support of global roaming and inter-working with other 3G wireless
systems.
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802.16e MAC
NCMS Generic PartNCMS RRM support PartBS Radio Access PlaneBS Backbone Plane NCMS Generic PartNCMS RRM support PartBS Radio Access PlaneBS Backbone Plane
WiMAX CPE, BS and ASN GW (16e)
802.16 PHY
802.16e MAC
Ethernet
Gateway
&
Router
Service
CLI / SNMP
Agent (802.16i)
WiMAX BSWiMAX ASN Gateway
and Authenticator
EAP
WiMAX CPE
PKMv2
CLI
: Existed Tech : Developed in 2007 :Chipset provider
PKMv2PKMv1
RRM
& Handover
Ethernet
RADIUS
AAA Server
IP
EAP Method
GRE/IP Tunnel
DP Ctrl
SFM
RRA
Paging Agent
Handover Fn
Context Fn
Auth Relay
GRE/IP Tunnel
DP Ctrl
SFA
RRM
Paging Control
Intra ASN Mobility
Context Fn
Auth Relay
EAP
802.16 PHY
EAP Method
R1
R2Transport
Protocol
Transport
Protocol
RADIUS
EthernetR6 R3
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TOWER READINESS
A Wi-Max Tower: Similar in Concept to Cellphone tower. A Single Wi-Max tower canprovide coverage to a very large area (~40 Km)
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Subscriber UnitsThere are two Versions
Indoor Subscriber Unit
Outdoor Subscriber Unit
Indoor units are comparable in size to a cable modemor DSL modem.
Outdoor Units are roughly the size of a Laptop PC and
their installation is comparable to a residentialsatellite dish.
There is an increasing focus on portable unitsincluding handsets and PC peripherals.
OutdoorSubscriber Unit Indoor Subscriber Unit
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Pain points for planning & deployment
Planning activity to be carried out based on data provided.
Map Terrain ,Tool and subscriber preference to be provided .
Accessibility of the surveyed site to be provided by customer.
After tower erection alarm monitoring should be limited .
Customer complaints limitation to be mutually agreed on.
Drive and optimization to be specified (Site wise or Cluster wise).
Mutually agreed KPIs to be achieved using customer pref tool.
Backhaul expertise to be developed for backhaul operations.
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Challenges for planning & deployment
Resource/Tools availability with expertise.
Vendor readiness in acquiring access to the surveyed option.
Civil Readiness for tower erection and earthing
Power/Backup availability for BS/SS.
Wi-Max Network is High power consuming technology and needs significant
electrical support
Feasibility of Line ofSight for near BS
Drive to be done with benchmarking tool
Avoid repetition in drive test with optimal usage cost of resource vehicle, rigger
and tools
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Actions for pain points
Resource/Tools to be facilitated.
Resources to be trained for END to END Activity .
3 surveyed options at least to be provided for accessibility acquisition
Microwave or OFC layout/availability to be provided prior to survey forbetteroptions and easy POI connectivity.
Drive & Switch co-ordination to be synchronized for Drive test.
Expertise in Drive plan co-ordination and vehicle management .
Avoid repetition in drive test with optimal usage cost of resource vehicle, rigger
and tools.
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TOOLSCell Site Planning
Planet EV,EDX,TCP, Asset, Atoll,Mentum,XCAP.
Microwave Planning
Ellipse (CTS), Pathloss , TLP, Global mapper.
Drive test
XCAL,R&S Romes , Qvoice, Agilent ,Tems
Investigation.
Post Processing & Optimisation
XCAP,TEMS Discovery.
Other Tools
Camera, GPS, Magnetic compass, Laptop etc..
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Schedule
Cell Site Planning Duration of 15 days - 45 days .
Microwave Planning Duration of 15 days - 45 days.
Survey & Drive test Duration: 24Hrs 72 Hrs for cell site survey with 3 options.
Duration: 24 Hrs 72 Hrs from Site Radiation time.
Duration:4 days 1 week from the date ofCluster readiness.
Post Processing & Optimization Duration : 24 Hrs 48 Hrs from the data received from field.
Other ActivitiesAlarm Handling based on severity SLA agreement.
Customer complaints based on severity and SLA period.
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Conclusion
It is highly unlikely that WiMAX will compete with orreplace every other wireless technology
WiMAX could bring broadband access into the homes &
businesses of millions of people in rural and developing
markets.
Portable Internet a reality
Will fulfill a very valuable role in the wireless
ecosystem.
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