integração de redes sem fios heterogéneas tendo como alvo a rede 4g

Instituto Telecomunicações , Aveiro

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Fibre Optic Networks for Distributed, Extendible Heterogeneous Radio Architectures and Service

Provisioning

FUTON

Integração de redes sem fios heterogéneas tendo como alvo a rede 4G



Some Wireless Trends

Provide answer to the growing demand for wireless services– Solution

• With a cellular planning reduce the cell size

Provide answer to the need for a broadband component– Solution

• Exploit the rich scattering properties of the wireless channel using multiple Tx/Rx antennas (MIMO concepts)



The Conventional Cellular Architecture an the trends I

•Wireless Cellular Networks: Architecture

BSC

RSSBTS

BTS

BTS

Core NetworkExternal Networks

BTS

BTS (GSM) or Node B(UMTS)• Layer 1 Processing & basic RRM

– BTS’s connected to the BSC (RNC) through cable or microwave links• In either case the data is regenerated at the BTS (Node B)

Space multiplexing by treating radio signal from other cells as unknown interference



The Conventional Cellular Architecture an the trends II

What the scaling problem with such an architecture?

When the cell size gets smaller and smaller– Path loss exponent reduces towards 2– Interference from other cells increase

• Capacity per cell decreases• Capacity (users/Km2) does not scale linearly as the cell size reduces

Solution– To modify the architecture so that the signals from

other cells is not seen as interference



Joint Processing (detection coding,

resource managing)

RSSBTSRAU

BTSRAU

BTSRAU

Radio signals transported transparently

Allows soft combination at the CU. Signals from different cells not treated as interference

Service dataRNC

Solution

Reduced processing

Central Unit



The point to point capacity problem

MIMO

– Separate streams at the antennas multiplexing gain (R=min[Mt, Mr])• But achieved only if the channel is rich scattered• But in mobile application, outdoor channel does not have too many major

scatterers, resulting in strongly correlated channel capacity scaling not achieved

• Furthermore when more than one pair of MIMO users exist, interference to each other still exists, implying the requirement of joint processing of multiple pair of MIMO links

Solution: Build a MIMO system with far apart antennas

Transmitter Precoding

Receiver Processing



Solution

The network capacity problem and the point to point capacity problem point to the same solution– Perform a joint processing of spatially separated radio

signals

Build an infrastructure that collects / distributes the radio signals from the different antennas

The technology to build that: optical fiber



Conventional Rationale for RoF

Generalized RoF network for application in cellular networks is a resurgent idea but up to now not has not taken place

Why?– RoF has always been thought of as a remoting or extension

component– Optical components still expensive to provide a clear balance towards

the use of remote antenna units in 2-3G

May it change now?– Trends call for a joint processing of distributed radio signals

what is needed is much more than remoting– Shift the vision of RoF as a remoting component to an

aggregating one

THIS THE OBJECTIVE OF FUTON



FUTON Basic Architecture

FO

Interface

RoF Mgmt

Hybrid Optical-Radio Infrastructure

RAUOptical fiber

Central Unit

Join

t Pro

cessing

(d

ete

ctio

n c

od

ing

, re

so

urc

e m

an

ag

ing

)

RNC



FUTON Architecture

But we can get much more from the infrastructure

With multiband RAU, the capacity of optical fiber allows:– The RoF infrastructure to be shared by different systems / operators

Technical level– Processing of multisystems at

a single location facilitate the design of efficient cross-system algorithms / protocols

– Interoperability

Potentialities to exploit either at the technical or business levels

Business level– Owner of the RoF can be third

party– Existence of an infrastructure

that can be rented will facilitate the entrance of new service providers



FUTON Architecture

.

.

.

Outdoor DBWS

Indoor fixed & DBWS

Campus WLAN Extension

Dedicated radio system

FUTON Service Manager

Middlew

areand

CR

RM

DBWS

3G

WiMax

WiFi...

FO

Inte

rface

RoF Mgmt

Central Unit

Basic RAU

Extended RAU for radio dedicatedsystems

Optical fiber

Indoor RAU



Futon Objectives

Technical level– Design and provide proof of concept for a hybrid optical-radio

infrastructure enabling 1Gbit/s and 100Mbit/s wireless communications for pedestrian an high mobility environments respectively

– Exploit the potentialities offered by the infrastructure and develop mechanisms for inter-system coordination and optimum usage of the radio resources and provide the proof of concept.

Deployment/ business level– Evaluate the implications on the current wireless architecture

models of the FUTON concept, determine cost models for upgradeability / replacement and provide roadmaps for evolution.



FUTON Challenges

Wireless Optical

Joint evaluation of the requirements

Algorithms / Protocols

Network architecture and management

Architectures

Management of hybrid infrastructure

Concept Level

Transceiver architectures Optical Components and subsystem design

Implementation Level

Integration

Beyond the implementation

Planning and deployment

System level evaluation



FUTON- The Consortium

SI

IT

JAY

NSNPT

OTE

UniP

TUD

AAU

VTT

UNIK

ACO

MOT

AT

NICT

VIVO



Consortium and Expertise

The Consortium– 3 major equipment manufacturers, 3 operators, 4 universities, 3 research centres

and 3 SME’s.

The Expertise– Capacity to have a prospective vision of the most likely scenarios for the

evolution of telecommunications and capacity to evaluate the impact of solutions proposed.

Three operators: Portugal Telecom, OTE and VIVO

– Capacity to propose and evaluate solutions, for the technological issues recognized as key aspects for the development of future wireless and optical systems.

Strong research teams from laboratories and universities.

– Capacity to filter and validate the technological proposals based on their expected commercial value and make the translation to prototypes.

Three large telecom equipment manufacturers, Motorola, Alcatel-Thales (III-V Lab) and Nokia Siemens Networks.

– Specific expertise on dedicated topics.

Three SME’s: Acorde ( RF design for radio over fibre), Jaytech ( software tools for network evaluation) and Sigint (implementation of middleware solutions).



Key Facts

Effort: 920.5PM; Budget Total: 9.85M€ EU Contribution: 6,58M€

Budget Distribution– Per category

• RTD related activities: 91,4%• Management related activities: 4,1%• Other (Dissemination and training): 4.5%

– Per type of organization:• Large industry: 35,2%• SMEs: 14,3%• Universities: 24,2%%• Research Centres: 26,3%



The Implementation I

Phased Approach - Each Phase is characterized by a major milestone and basic objective – phased development will allow an adaptation to actual developments in technology, international standardisation,

regulation and political environment

Phase I FUTON – devoted to the detailed specifications of scenarios, capture of requirements, identification of business cases and

the development of the key enabling technologies. – Key objective of this first phase is to develop the technologies that will be needed in the second phase to

demonstrate in field trials the FUTON concept. – Main milestone of FUTON to reach at month 30 is to have the key building blocks developed and

tested and a first system level evaluation performed.

Key objective of Phase II: FUTON concept physically validated. – This second step will therefore be devoted to the optimization and hardware validation of the subsystems,

integration, set up of trials for technology demonstration and system level evaluation.

Key

Tech

no

log

ies

Deve

lop

ed

an

d

Tes

te

• Scenario definition

• Specification of main requirements

• Development of key enabling technologies

• Design of subsystems

• Performance evaluation

• Contribution to standardization

Phase IFUTON

Phase IFUTON

Phase IIEventual Follow-up

Project

Phase IIEventual Follow-up

Project

• Hardware validation

• Integration

• System level evaluation

• Trials

• Contribution to standardization

M 1 M 60M 30

FU

TO

N

Co

ncep

t

Dem

on

str

ate

d

an

d

Va

lida

ted



The Implementation II

Phase IPhase I

M 1 M 30

Phase IIPhase II

M 60

System Concept DefinitionSystem Concept Definition

Theoretical Definition and Validation of the Units

Theoretical Definition and Validation of the Units

Implementation and TestImplementation and Test

Trials Trials

IntegrationIntegration

Optimization, Implementation and Test

Optimization, Implementation and Test

System Analysis and Evaluation Component




OutputFUTON Outputs:

Concepts and EnablingTechnologies

Hardware Validation and Demonstration

Pro

ject C

om

po

ne

nts



The Implementation – Functional Blocks

Mid

dlew

are and

CR

RM

Middle

ware

and

CR

RM

RoF

Ma

nagem

ent

Ro

FM

anagem

ent

Ph

ysical Optical /

RF

Infrastructure

Physical O

ptical / R

F Infrastructure

DB

WS

Te

rmina

l and

Cen

tral P

rocessor

DB

WS

Term

inal an

d C

entral P

rocesso

r

Existin

g Wire

less

System

sE

xisting Wireless

System

s

New Development

Integration and trialsIntegration and trials



The Implementation – Work Package Structure

W P5

WP

3 A

lgo

rith

ms/

Pro

toc

olsf

or

dis

trib

ute

dwir

ele

sss

ys

tem

s

W P7 System level evaluation

De

sig

nan

d e

va

lua

tion

O/E

E/O

su

bs

ys

tem

s Development ofenabling optical

components

WP

4 M

idlle

wa

rea

nd

ra

dio

re

so

urc

ema

na

ge

me

nt

WP

2 S

ce

na

rio

De

fin

itio

n a

nd

S

ys

tem

Re

qu

ire

me

nts

a

nd

bu

sin

ess

mo

de

ls

W P1 Management

WP

6 M

an

ag

em

en

toft

he

Ro

F

WP

8 D

iss

em

ina

tion

an

d t

rain

ing

RoF Architectures



Phase I - Components and Outcomes

Outcomes

System concept –Detailed scenarios and specifications.

Theoretical concepts and implementation

–Distributed Broadband Wireless System (DBWS) specified ;

–RoF infrastructure: definition completed;

–RoF management unit: Specifications completed;

–First version of Remote Antenna Units (RAU) and optical link implemented and tested;

–Middleware and radio resource management: initial convergence algorithms integrated in laboratory with version 1 of the optical links and tested;

–Basic prototyping of DBWS developed and test with version 1 of optical link.

System Analysis and Evaluation–System level simulator developed;–System level capacity and performance results obtained;

–Techno-economical analysis performed.

System concept

DBWS Specifications and Basic Tests

Middleware and radio resource management

Optical Components & Links

Management unit of the RoF

Theoretical concepts and implementation

La

b De

mo

sSystem Level Analysis

and Evaluation

Components of FUTON



WP1 Management

Objectives:– Interface between the Project and the European Commission

done by the Project Coordinator (CO) whose role is to:.– Provide the consortium with a complete management process

(tools & methodology) and project Secretariat (administrative, financial & contractual). The Coordinator with both the Quality Manager and Technical Manager will be responsible for :

– Provide technical quality control through the technical steering group.



WP2 - Scenario Definition System Requirements, Business and Deployment Models I

Objectives:– To define the overall FUTON system architecture guaranteeing,

at the services and management level, seamless inter-working between existing and future wireless systems.

– To identify relevant scenarios envisaging future cellular systems - B3G (Beyond 3G), 4G and distributed broadband wireless systems (DBWS) - on which the FUTON centralized system served by a distributed antenna system based on RoF can be assessed.

– To specify the optical/radio interface features of the wireless systems envisaged by the project which are the input to other work packages.

– To find out new deployment models regarding the FUTON concept.

– To evaluate the business potential of the proposed system to provide broadband wireless services.



WP3 - Algorithms/Protocols for distributed wireless systems I

Objectives:– To develop and specify the PHY layer algorithms, MAC layer protocols

and cross-layer algorithms that will be tailored to the RoF scenario, and will be used by the FUTON system to achieve its goals of high bit-rates and large capacity in terms of users.

– To define the baseband architecture of the Central Unit where signal processing for the PHY and MAC layers is expected to occur.

– To perform the study and compensation for the effect of the optical distribution network on the transported signals.

Effort– 217.8PM

Organization– T3.1. Interaction with WP5 for the definition of the interface

between radio and optical frequencies – T3.2. PHY layer algorithms– T3.3. MAC layer protocols and cross-layer algorithms – T3.4. Transceiver architecture and prototyping



WP4 - Network convergence and cooperative control for RoF distribution networks I

Objectives:– Definition of the FUTON middleware architecture.– Design, implementation and validation of the FUTON middleware for

coordinating and executing connection management procedures over heterogeneous networks. The Futon middleware is envisaged that will have direct interaction with the RoF network manager which will be passing network information to the Futon middleware.

– The inclusion of radio resource management techniques that will use the available frequency spectrum efficiently, and will honour, to the best possible extent, the users’ QoS requests.

– To investigate vertical hand-off procedures for session continuity over RoF networking environments:

• Design, implementation and validation of link configuration and context information.

• Design, implementation and validation of network discovery mechanisms• Design and development of cross layer algorithms.• Design, implementation and validation of link selection algorithms/protocols

assisted by RoF network state information.– Demonstrating the FUTON middleware functionality.



WP5 - Architectures, components and subsystems for Radio over Fibre I

Objectives:– • Design, implement, and test at the Physical layer, the

radio-optical interfaces, links and topologies and architectures required to provide the necessary performance for meeting the FUTON network objectives



WP6 - Management of the RoF infrastructure I

Objectives:– Design a flexible solution capable of managing the

infrastructure for the RoF Network. The management solution must cope with the provisioning, the fault-detection and performance management of the RoF infrastructure



WP7 - System Level Evaluation I

Objectives:– Definition of performance evaluation metrics based on WP2

scenarios.– Definition of methodology for usage of the results of WP3-5– Development and validation of system level simulation platform

for evaluating the impact of RoF networking, PHY and MAC algorithms/protocols on global system performance.

– Performance assessment of promising algorithms/protocols developed in the scope of WP3, 4, and 5.

– FUTON feasibility evaluation.



WP8 Dissemination, training and exploitation I

Objectives:– To promote the FUTON system concept by highlighting its

competitive advantage in comparison to competition.– To identify exploitation opportunities for individual products

and partners.– To prepare the exploitation plan for the project results.– To identify R&D activities with similar objectives regarding the

broadband wireless sector and relate to those activities in order to enhance product acceptance.

– To participate and contribute in the appropriate standardisation bodies and promotion activities.

– To ensure technical and scientific dissemination of the project results through publications in workshops conferences and journals .

integração de redes sem fios heterogéneas tendo como alvo a rede 4g

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