evolution of broadband wireless

7/30/2019 Evolution of Broadband Wireless

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Evolution of Broadband

WirelessFrom Wireless LAN to Access, from Proprietary to StandardFrom Wireless LAN to Access, from Proprietary to StandardSolutionsSolutions


2/22

Fixed OutdoorFixed Outdoor

Solution CharacteristicsSolution Characteristics

Fixed location

Installed outside ofsubscribers house

Requires truck roll

ApplicationsApplications

E1/T1 Level Service forEnterprises

Backhaul for Hotspots Fractional E1/T1 for SMB

Limited residentialbroadband access (earlyadopters, rural,developing countries)

MobileMobile


CPE Native in Mobile PC

User can roam within theservice area at varyingspeeds\

Always Best Connected(Simplified NetworkSelection)


Mobile Broadbandaccess for consumers

Fixed Indoor & PortableFixed Indoor & Portable


Consumer self install,

auto provisioning Portable can move

CPE to another locationin service area


Last Mile Broadbandaccess for consumers

Portable broadbandaccess

The WiMAX Vision

20042004 20052005 20062006


3/22

WiMAX Vision: Broadband

Everywhere

BWA Operator

Network Backbone

INTERNET

BACKBONE

Mobile

Backhaul

3

RESIDENTIAL & SoHo

DSL LEVEL SERVICE

1

802.16d

FRACTIONAL E1

for SMALL

BUSINESS

E1+ LEVEL SERVICE

ENTERPRISE

BACKHAUL for

HOTSPOTS

2

802.16d

H

H

HH

H

H

H

H

H

WMAN Nomadic Coverage

--> handoff from HOT

SPOTS

4

= wide area

coverage outside of

Hot Spots

Mobility

5802.16e


4/22

WiMAX Deployment Scenario An Example

MAC Addr. A

Outdoor Unit

To LAN

Indoor to outdoor CAT5 cable

Antenna

Attached

Indoor Unit

Hub

MAC Addr. R

MAC Addr. Q

MAC Addr. PMAC Addr. CMAC Addr. B

10 / 100 Base T output

Each Subscriber Unit can support upto 1,024 MAC addresses.

Indoor UTP CAT5 cable

Access Unit (Base Station) locationOutdoor Unit

Indoor to outdoor CAT5 cable

AntennaAttached

Indoor Unit

10 / 100 Base T outputWith integrated 802.11

Wi-Fi Access Point

Subscriber Unit connected to LAN Hub of a Large Enterprise

Subscriber Unit with integrated Wi-Fi IEEE 802.11 Access Point in a Hotel, Caf, Airport etc.

512k

m.NonL

ineofS

ight(No

n-LOS)R

ange

Subscriber Unit connected to a hub in a Multi-storey / Multi-tenant Apartment Building

2030

km.Lin

eofSight(L

OS)Ran

ge

100BaseT

Router

Internet

Backbone

Outdoor Unit

Indoor to outdoor

CAT5 cable

Indoor Unit

Hub

MAC Addr. G

10/100 BaseT

output

AntennaAttached

Indoor UTP CAT5 cable

MAC Addr. F

MAC Addr. H

MAC Addr. E

MAC Addr. AMAC Addr. B

MAC Addr. D MAC Addr. C


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1 Trans mis s ion N etw orking1 Trans mis s ion N etw orking

BSC

N E1

SDH transmission network

BTSBTS

GSM base station

SU

E1

GSM base station

SU

E1

GSM base station

SU

E1

GSM base station

SU

E1

N E1


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6

System Architecture


7/22

CPE Outdoor Unit

Indoor Self-Install

PC Card (ODMs)

Laptop integrated (Intel)

System Components

Base Station Controller

Macro Base station

Micro Base station

RF Units

Network Management


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High PerformanceBase Station Performance:

18 Mbps net capacity with 3.5 MHz channels

IEEE 802.16 highly efficient MAC

BST radios operate in full duplex mode

BST radios support up to 14 MHz channelbandwidth enables up to 72 Mbps net capacityper single sector

CPE Performance:

10Mbps net throughput per unit Multiple connections and SLAs per unit


9/22

High Capacity Scalable

BST Multi Channel BST radios

Increase capacity over the same RF infrastructure

Scalable pay as you grow solution

Scalable

Growth

Modem# 1

Modem

# 2

Modem

# 3

Modem

# 4

IF

Mux

4x3.5MHz Channel = 72 Mbps Net

Capacity

Radio Unit

RFModem

# 1

1x3.5MHz Channel = 18 Mbps

Net Capacity

Radio Unit

RF


10/22

Scalable BST DesignBenefits Pay as you grow cost

effective BST design

Applies for Macro and

Micro BST

Fits rural market that

requires high coverage

with moderate capacity


11/22

Base Station Description

Multiple Backbone types: 100BaseT/1Gigabit Ethernet interface

V5.2/ Multi-E1 interfaces to Local Exchange

Multiple RF unit configurations

Multi sectors

Multi channels Multiple antenna per sector (smart antenna)

*


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Base Station Controller

NPU Network Processing Unit card (1+1) AU Access Unit card (4+2)

NIU Network Interface Unit - 12 x E1/T1 interface card (port

redundancy)

PIU Power Interface Unit card with redundancy AVU Air Ventilation Unit controllable fans (9+1)

PSU Power Supply Unit (3+1)

PSU

Access Unit (AU) orNetwork InterfaceUnit (NIU)

NetworkProcessingUnit (NPU)

AVU

PIU


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RF Units Smart antenna 2

nd

, 4th

order diversity Full duplex multi-carrier radio - connects to an external antenna

High system gain and interference robustness utilizing high

transmit power and low noise figure

Support for up to 10MHz channel bandwidth Increased capacity - multiple RF channels per sector through IF

Mux

Cell coverage using a 60o, 90o or 120o sectorized antennas

Outdoor

Configuration


14/22

Micro Base Station

1U rack mounted base-station

controller

1,2 or 4 RF units configurations

Two deployment

configurations:

Sectorial - single sector coverage

Omni-type - for area coverage

Micro Base Station

RFU Integrated

with a Sector

Antenna


15/22

Configuration &

Scalability Base station Increased capacity

3,4 & 6 sectors base station configuration

Multi-channel (1-4 channels per sector)

1-4 base station controllers per base station

Increased coverage

1,2 & 4 antennas per sector

Micro base station

Omni / sector antennas

Small isolated applications

Increased covera e / ca acit in s ecific

Range + Capacity


16/22

Non - LOS Functionality

OFDM Modulation overcomes multi-path and deepfades in parts of the spectrum

Extended coverage and reach increasemarket share and revenue

Easier installation reduce operation &

installation cost, enabler for zero install


17/22

Multi-RateAdaptive modulation

8 data rates supported

Optimizes throughput to respond to various

radio link conditions


18/22

Standard based

technology Multiple vendors Lower investment risk for

operators

Sets the foundation for competitive, costeffective solution: Standard chip sets

Leverage economy of scale in production to drivedown the cost

Integration with laptops and PDAs zero cost CPE


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Customer Premises Equipment

(CPE)CPE types:

Indoor self installed CPE (integrated antennas)

Integrated outdoor CPE

PC Card

Laptop integrated

CPE benefits:

Interoperability and multiple vendor Support

Low cost through mass production

Outdoor

Self Install

PC Card

Laptop


20/22

Interfaces at BTS

The following interfaces shall be supplied on each

BS:

Name Number 10/100 mbps 100 baseT 2

full duplex interface

Gbps SX 2 V5.2 E1 Interfaces 10

G.703 E1 Interfaces 10


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Interfaces at CPE

The following interfaces shall be suppliedon each CPE:

Name No. of interfacesType A B C

10/100 mbps 100 baseT 1 4 4

Ethernet interface USB interface 1 0 0

G.703 E1 Interfaces - 2 2

POTS interface - 4 -

VOIP interface - - 4


22/22

Thank You

evolution of broadband wireless

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