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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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