SuNET-WIMAX

5/21/2018 SuNET-WIMAX

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Copyright 2005 TietoEnator Corporation

WiMAX - a sneak preview

Torbjrn Lundmark


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Copyright 2005 TietoEnator Corporation Page 22005-09-16

Agenda

WiMAX overview

Market

Technology

Standard update

WiMAX architecture Network architecture

OFDM

MAC/PHY

Summary


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Today's Wireless Market

End-user are used to high bandwidth from fixed sources

Expects the same behaviour from wireless

The initial launch of WCDMA has not been a success

~30 million subscriber where half in NTT DoCoMo NW

2/3 of the subscriber added as late as 2005

Initial 3G promises far from fulfilled (wireless video, coverage, etc)

A need for speed required from existing telco operators

Afraid of being left behind

Competing with wireless MAN provider

Needs to be prepared for future growth of data traffic

Protect their 3G investment

A need for lower rural coverage cost


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3G Evolution (source: Nokia)


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What is WiMAX, 802.16d and e

A specification of 915 pages accepted in 2004. A member

of the IEEE802 family of specifications.

IEEE802.16-2004 include P2P, P2MP and mesh access

networks

2-11GHz NLOS 10-66 GHz LOS

During 2005 IEEE 802.16e includes mobility.

During 2005 MIB standardized as well

IEEE802.16 is supported by the industry group WiMAX IEEE802.11 is supported by the industry group WiFi


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7/11Copyright 2005 TietoEnator Corporation Page 72005-09-16

WiMAX vs. 3G, pros and cons

Cost

Lower equipment cost for WiMAX due to certified products (compare withWiFi)

WiMAX require new infrastructure while HSPA rides on UMTS

Coverage

Roughly the same coverage (average ~5 km) Performance

Roughly the same performance (average ~2 Mb/s per user)

Market window

HSDPA launches in 2006 while HSUPA will come in 2008?

WiMAX standard set end of 2005 -> first products in 2007

Acceptance

HSPA has a higher acceptance with mobile operator



WiMAX architecture End-to-End ReferenceModel

NSP

NAP

R1 R3

MSS

R2

ASN CSN

ASP Network OR

Internet

R4

Another ASN



ASN Reference Model

ASN

ASN GW

R6

BS

BS

R8

R1

R3

R4



WiMAX BS architecture

OFDM

Modulation technique, spread spectrum

Used in e.g DSL, WLAN, WiMAX

MAC, control plane, user plane

Manage resources on the air interface

QoS ARQ

Mobility Management

Radio Resource Management

Location

PHY

OFDM

MIMO

Modulation

P

H

Y

Service

Specific CS

e.g. IP

MACControl

Plane

MAC

Data

Plane



Summary

Standard for WiMAX mobile solution not finalized yet

No products certified by WiMAX forum yet

Test network in Skellefte shows promising results

According to analysts WiMAX will take significant market shares

Which standard will rule nextgeneration broadband wireless?

Documents

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