Equipping Rural Broadband Networks OECD · PDF fileEquipping Rural Broadband Networks OECD Workshop. ... – Labtops and PDA’s with inbuild WiFi antenna – Dual mode phones/Smart

PG 1NORTEL NETWORKS CONFIDENTIAL PG 1

Peter ZwinkelsBusiness Development Public WLAN solutionsPorto, October 2004

Equipping Rural Broadband NetworksOECD Workshop

Nortel Networks Confidential Page 2

Data Access Landscape

Speed

Fix

edN

om

adic

Mo

bile

100 kbps 1 Mbps

Cable Modem

GPRS,Mobile Circuit Switch

1xRTT,EDGE

UMTS1xEV-DO

802.11 a/b/g

10 Mbps 100 Mbps

802.16a/d

802.16e802.20

Wireless Data Access technologies enabling Rural Broadband Networks

DSL


Benefits WLAN

User perspective

• Emergence of WiFi enabled devices

– Computers with WiFi cards

– Labtops and PDA’s with inbuild WiFi antenna

– Dual mode phones/Smart phones

• Increase of WLAN deployments

– At home

– In the office

– Hotspots

Service provider perspective

• WLAN become widely available inexpensive and ubiquitous

– “Billion” dollar business today

• Over 500 MHz of spectrum available

– No billion dollar license fees

• Standard driven technology

– IEEE 802.11a/b/g (etc.) standard is mature (10 years in development)

– 802.11 standards community is as big as cellular standards More spectrum available than all cellular bands

WLAN is becoming THE technology for last mile wireless data access


Wireless Data options in rural area’s

• Isolated hotspots– Requires wired backhaul to every hotspot– Primarily indoor coverage

• Extending Coverage with Outdoor APs– Wiring and OPEX costly– Does not address handover and mobility

• WiMAX (802.16)– High power and tower requirements– Initially to address Hotspot backhaul (BWA)– Cheap CPE/Mobile Devices not yet here

• Wireless Mesh Technology– New entrant in the marketplace– Currently not tracked by analysts yet– Utilizes standard 802.11 RF for traffic backhaul– Can be complimentary to future 802.16 WiMAX


Wireless Mesh Technology Choices

• Single RF Systems– Mobile users and Access Points

share the same radio frequency between access and backhaul

– Inexpensive, low bandwidth, small scale, high potential of interference

• Dual RF Static Systems– Radio access frequency and

backhaul link frequency are different– Better performance and scale, less

interference– Statically configure LOS on backhaul,

single point of failure

• Multi-RF Intelligent Systems– Multiple focused RF modules for

backhaul links– Single RF access link for users– Access Point is a router that can re-

route around failures– Greater capacity, scalability


Wireless Mesh Network Solution

• Reduces installation and commissioning costs

– Self-configuring, self-healing– No RF engineering required– Outdoor packaging and low power

consumption permits installation almost anywhere

• Reduces operating expenses– Eliminates requirements for wired backhaul

connection to every Access Point– Basic router connection to backbone

network, Packet Gateway manages mobility, roaming, and security

• Provides differentiated WLAN access in large areas

– Mobility within the Mesh– Broadband access and transit remove

network bottlenecks

Enterprise / ISP / MetroDistribution Network

WirelessGateway

7250

CommunityArea Network

Alpha

Wireless AP7220

Enterprise / ISPBackbone Network

L3Router

Border Gateway(NAT, Firewall, etc.)

Internetat large

Optivity NMS

AAA, DHCP,RADIUS

NOSS

Network Elements of the WMNNetwork Elements of the WMN•• Wireless Gateway 7250Wireless Gateway 7250•• Access Point 7220Access Point 7220•• Optivity Network Management SystemOptivity Network Management System


Beta


How can “The Mesh” be accessed ?

WMN 7220Access Point

Mobile Node (MN)

Transit Link (TL) @ 5 GHz• Elevated dual-polar antennas with

switched-beams and adaptive CCIC*.• Uses 802.11a technology• External antennas for longer reach

Access Link (AL) @ 2.4 GHz• Elevated, dual-polar, diversity

switched antennas and adaptive CCIC*.

• Uses 802.11b/g technology

RF – Ethernet Module

SOHO/SME

Power over Ethernet Injector

LANRouter

802.11 b/g signalto WMN AP

Flat Panel Antenna

120 AC Power

RF – Ethernet Module

HOT SPOT

WiFi Coverage

Flat Panel Antenna




5 Ghz Spectrum situation

• Several bands in the 5 Ghz spectrum have been allocated for WLAN usage• Wireless Mesh Network solution operates in unlicensed, but regulated spectrum• It is down to each country to decide:

– To open for WLAN or not• Often already allocated to Army Forces

– Licensing Policy

5.15 GHz 5.35 GHz5.25 GHz 5.47 GHz 5.725 GHz 5.85 GHz4.9 GHz

4ch 4ch 4ch 6ch13ch

5.0GHz

3ch

USA, JapanIn/Outdoor(Licensed)

Japan In/Outdoor(Licensed, tentative

use by 2007)

USA In/Outdoor

5.03 -5.091 GHz

Recommended spectrum for US

Recommended spectrum for Europe

(also US soon)

USA, Europe, JapanIndoor only

USA In/Outdoor(required DFS & TPC soon)

Europe Indoor only


Under discussion to be permitted for WLAN in Japan by Ministry o f Public Management(that is not permitted in Japan now)

USA (soon ), Europe, In/outdoor

(required DFS & TPC )

5.15 GHz 5.35 GHz5.25 GHz 5.47 GHz 5.725 GHz 5.85 GHz4.9 GHz

4ch 4ch 4ch 6ch13ch

5.0GHz

3ch

USA, JapanIn/Outdoor(Licensed)

Japan In/Outdoor(Licensed, tentative

use by 2007)

USA In/Outdoor

5.03 -5.091 GHz


Recommended spectrum for Europe

(also US soon)

USA, Europe, JapanIndoor only

USA In/Outdoor(required DFS & TPC soon)

Europe Indoor only


Under discussion to be permitted for WLAN in Japan by Ministry o f Public Management(that is not permitted in Japan now)

USA (soon ), Europe, In/outdoor

(required DFS & TPC )

– Usage conditions:• Indoor/Outdoor• Transmission Power/Range • Interference Controle Mechanisms

- Dynamic Frequency Selection (DFS) - Transmit Power Controle (TPC)

• Type Approval


Introduction of WiMAX

• Business Users– WiMAX estimated at 10% of T1 cost for

equivalent capacity

– E1/T1+ Large enterprise– Fractional E1/T1 small business

• Broadband residential– Making the broadband home revolution

happen

– Initially only outdoor access

• Backhaul for hotspots/hotzones– WLAN increase appetite for broadband

access

• Unwired regions– China Unicom already rolling out WiMAX

base stationsResidential

SME

Hotspots

Base Station

Subscriber Stations

802.16802.16

Non Line of SightNon Line of SightPoint to MultiPoint to Multi--pointpoint


Enterprise / ISP / MetroDistribution Network

WirelessGateway

7250


Alpha

Wireless AP7220

Enterprise / ISPBackbone Network

L3Router

Border Gateway(NAT, Firewall, etc.)

Internetat large

Optivity NMS

AAA, DHCP,RADIUS

NOSS


Beta

EXPLORATORYConsiderations• Spectrum• Range• Cost

AP72zz

AP72zz


Gamma

AP72zzAP72zzAP72zz

Wireless Mesh Network with WiMAX backhaul solution

WIMAXWirelessBackhaul


Summary

• Wireless Networking technology is best alternative to provide coverage in rural and remote area’s

– Rolling out wired networks costly and timely

• WLAN is becoming the last mile wireless Data Access Technology

– Huge demand in enterprise and consumer market have made WiFi radio technology very cheap

– Availability of WiFi enabled devices is surging

• Wireless Mesh Hotzone solution offers a flexible and cost-effective alternative to deploying isolated hotspots

– Only (solar) power source required at Access Point location

• Combination of WIMAX and WLAN/WMN access technologies is promising option for equipping Rural Broadband Networks

PG 12NORTEL NETWORKS CONFIDENTIAL PG 12

Thank [email protected] visit:http://www.nortelnetworks.com/solutions/wrlsmesh/index.html

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Equipping Rural Broadband Networks OECD · PDF fileEquipping Rural Broadband Networks OECD Workshop. ... – Labtops and PDA’s with inbuild WiFi antenna – Dual mode phones/Smart