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WiBro 기술과 표준 동향WiBro 기술과 표준 동향

Chang, Sungcheol

([email protected])

WiBro Standardization Team

CONTENTS

I WiBroI

II WiBro Technologies

WiBro

II

III

g

Multi-hop Relay (IEEE 802.16j)

IV IMT-Advanced Air Interface (IEEE 802.16m)

V

VI

Proprietary WiBro Standardization Team- 2 -

What is WiBro?

Portable Internet Service (WiBro) is to provide a high data rate Portable Internet Service (WiBro) is to provide a high data rate wireless internet access with PSS (Personal Subscriber Station)wireless internet access with PSS (Personal Subscriber Station)DefinitionDefinition ( )( )under the stationary or mobile environment, anytime and anywhere.under the stationary or mobile environment, anytime and anywhere.

“Portable Internet”was named as “Portable Internet”was named as 『『WiBroWiBro』』. (End of April, 2004). (End of April, 2004)R fR f

』』 ( p , )( p , )WiBro : Wireless Broadband internet serviceWiBro : Wireless Broadband internet serviceReferenceReference

Mobility HighData Rate

WiBroWiBro

Low Cost Anytime,Anywhere


IEEE802.16 vs. WiBro

▣ IEEE 802.16e

◈ “Air interface for fixed and mobile broadband wireless access t ”systems”“Amendment for physical and medium access control layers for combined fixed and mobile operation in licensed bands”

◈ A d i D 2005 d bli h d i F b 2006◈ Approved in Dec. 2005, and published in Feb. 2006.


WiBro Features

MIC Q lit R i tMIC Quality RequirementsMIC Q lit R i tMIC Quality RequirementsMIC Q lit R i tMIC Quality RequirementsM j S t P tM j S t P tM j S t P tM j S t P t MIC Quality RequirementsMIC Quality Requirements

FrequencyR FFrequency

R F t 11

MIC Quality RequirementsMIC Quality Requirements


R F t 11

MIC Quality RequirementsMIC Quality Requirements


R F t 11

Major System ParametersMajor System Parameters

Standard (IEEE 802 16e)Standard (IEEE 802.16e)

Major System ParametersMajor System Parameters

Standard (IEEE 802 16e)Standard (IEEE 802.16e)Standard (IEEE 802 16e)Standard (IEEE 802.16e) Reuse FactorReuse Factor

DuplexingDuplexing

1

TDD, time slot synchronization among carriers


Reuse FactorReuse Factor

DuplexingDuplexing

1



Reuse FactorReuse Factor

DuplexingDuplexing

1


TDD, time slot synchronization among carriersDuplexingDuplexing TDDTDD

Standard (IEEE 802.16e)Standard (IEEE 802.16e)

DuplexingDuplexing TDDTDD


DuplexingDuplexing TDDTDD


+ Performance(Cell edge, Moving at 60km/h)

Performance(Cell edge, Moving at 60km/h)

gg

Min. 512 kbps (DL)Min. 128 kbps (UL)Min. 512 kbps (DL)Min. 128 kbps (UL)



gg




gg


DuplexingDuplexing

MultipleMultiple

TDDTDD

OFDMAOFDMA

DuplexingDuplexing

MultipleMultiple

TDDTDD

OFDMAOFDMA

DuplexingDuplexing

MultipleMultiple

TDDTDD

OFDMAOFDMA

BandwidthBandwidth ≥ 9 MHz≥ 9 MHzBandwidthBandwidth ≥ 9 MHz≥ 9 MHzBandwidthBandwidth ≥ 9 MHz≥ 9 MHz

MultipleAccess

pAccess OFDMAOFDMA

Max TransmMax. Transm. 18 Mbps (DL)18 Mbps (DL)

MultipleAccess

pAccess OFDMAOFDMA


MultipleAccess

pAccess OFDMAOFDMA


RoamingRoaming Available among different carriersAvailable among different carriersRoamingRoaming Available among different carriersAvailable among different carriersRoamingRoaming Available among different carriersAvailable among different carriers

Max. Transm.Rate per FA


18 Mbps (DL)6 Mbps (UP)











WiBro Service

▣ WLAN

◈ Support high throughput, low cost easy connectivity but voiceost, easy connectivity but voice & mobility not support

▣ CellularRate/Cost

▣ Cellular

◈ Support high mobility, QoS, security but low/ medium data rate at high cost traffic problem for

Tx RatePortablity

at high cost, traffic problem for PDA & PC.

▣ WirBro MobilityCoverage▣ WirBro

◈ Mobile broadband wireless access, high data rate at low cost, and cellular deployment

Cellular WiBro WLAN

p y


CONTENTS

I WiBroI


WiBro

II

III

g



V

VI


Reference Model

▣ Convergence Sublayer (CS)◈ Classifying external network

SDUs and associating them to the proper MAC service flow and Service Specific

CS SAPService Specific

CS SAP

the proper MAC service flow and CID.

◈ Payload header suppression.

Service SpecificConvergence Sublayer

(CS)MAC SAP

Service SpecificConvergence Sublayer

(CS)MAC SAP

▣ The MAC CPS◈ Core MAC functionality of

system access, ◈ Bandwidth allocation

MAC Common Part Sublayer(MAC CPS)

MAC MAC Common Part Sublayer(MAC CPS)

MAC

◈ Bandwidth allocation◈ Connection establishment◈ Connection maintenance◈ Classified to particular MAC

connectionsPrivacy SublayerPrivacy Sublayer

connections.◈ Quality of Service (QoS)◈ Scheduling of data over the PHY.

Physical Layer

PHY SAP

Physical Layer

PHY SAP

▣ Privacy Sublayer◈ Providing authentication◈ Secure key exchange◈ E ti

y y(PHY)PHY

y y(PHY)PHY


◈ Encryption.

MAC Scheduling

Uplink SchedulingCDMA allocation

Uplink Burst Allocation(scheduling)

UL-MAP Generation

Downlink Scheduling Channel QualityQuality

Info.SDU Classifier

Traffic Buffer Downlink Burst Allocation(scheduling)

PDU Generator

DL-MAP Generation & Burst Data Generation

Transfer Burst Data to PHY & Control PHY

DL MAP Generation & Burst Data Generation

Fast-feedback CH


OFDMA Technology

▣ OFDM◈ Orthogonal Frequency

Di i i M lti l i1 OFDM symbol

durationDivision Multiplexing◈ Parallel data transmissions◈ Longer symbol duration

frequ

ency

durationsig

nal

band

width

Robust to timing offset compared with single carrier scheme

time

ba

0

◈ FFT (Fast Fourier Transform)1

0

0

1

0


OFDMA Technology

▣ OFDM + FDMA + TDMA◈ 2-dimensional resource allocation◈ Allows flexible bandwidth allocation, but overhead.

OFDMA symbol (time)

frequ

ency

)S

ubch

anne

l (f

S


AMC (Adaptive Modulation & Coding) Technology

▣ Modulation Scheme◈ QPSK (2 bits/baud)◈ 16QAM (4 bits/baud)◈ 64QAM (6 bits/baud)

▣ Code Rate 64QAM, 2/3, 5/6▣ Code Rate◈1/12 ~ 5/6.

16QAM, 1/2, 1/3, 1/6

APQPSK, 1/12


CONTENTS

I WiBroI


WiBro

II

III

g



V

VI


Multihop Relay

▣ Purpose

◈ Coverage Extension

◈ Throughput Enhancement◈ Throughput Enhancement

▣ Interface

◈ RS<>MS : IEEE 802.16e (No modification of MS functionalities and i t f )interface)

◈ BS<>RS : MR-enhanced IEEE 802.16e

Throughput

R S

M S

Coverage

B S R SM S


PAR of Multihop Relay TG(16j)

▣ TITLE OF DOCUMENTS: Amendment to IEEE Standard for Local and Metropolitan Area Networks –Part 16: Air Interface for Fixed

d M bil B db d Wi l A S t M ltihand Mobile Broadband Wireless Access Systems –Multihop Relay Specification.

▣ SCOPE: This document specifies OFDMA physical layer and p p y ymedium access control layer enhancements to IEEE Std 802.16 for licensed bands to enable the operation of relay stations. Subscriber station specifications are not changedSubscriber station specifications are not changed.

◈ ADDITIONAL NOTES: Control functions may be centralized at the base station or distributed among the relay stations with central coordination from the base stationcoordination from the base station.

▣ PURPOSE: To enhance coverage, throughput and system capacity of 802.16 networks by specifying 802.16 multihop

l biliti d f ti liti f i t bl lrelay capabilities and functionalities of interoperable relay stations and base stations.


Activities So Far

▣ EC Approval on P802.16j (10 Mar. 2006)

▣ IEEE-SA Approval (30 Mar. 2006)

Year Month 802.16 session Actions

Jan. #41 Interim SG: the 3rd meeting – PAR Completion

Mar. #42 PlenaryTutorial Session on 802.16 MMR

802 EC to approve 802.16j PAR

May #43 Interim 1st TG meeting

2006July #44 Plenary

2nd TG meeting

Require Document & Procedure for proposal Selection & merging

Call for Contribution

Sept #45 Interim3rd TG meeting

Sept. #45 InterimPresentation & Selection

Drafting standard

Nov. #46 Plenary 1st WG letter ballot

Jan. #47 Interim 2nd WG letter ballot

2007

Mar. #48 Plenary 1st sponsor ballot

May. #49 Interim Sponsor Recirculation

July. #50 Plenary Submission to Rev. Com

Sep. #51 Interim SA Approval


Sep. #51 Interim SA Approval

Objectives of this 5th TG Meeting

▣ To advance the development of the P802.16j Baseline Document (IEEE802.16j-06/026r1)nt (IEEE802.16j 06/026r1)

◈ Through the Technical Contributions presentation and discussion,

◈ Considering the five Guideline Documents of:◈ Considering the five Guideline Documents of:

Usage Models (IEEE802.16j-06/015),

D fi iti d T i l (IEEE802 16j 06/014 1)Definitions and Terminology (IEEE802.16j-06/014r1),

Evaluation Methodology (IEEE802.16j-06/013r2),

T h i l R i t (IEEE802 16j 06/016 1) dTechnical Requirements (IEEE802.16j-06/016r1) and

Table of Contents (IEEE802.16j-06/017r2).

▣ To proceed to the “call for comments” on the baseline document towards the next meeting for the draft standard.


Usage Models (1/2)

▣ Fixed Infrastructure UM

◈ Service provider deploys, generally in outdoor

Multihop Relay

RS

generally in outdoor environment.

◈ To improve coverage, capacity or per user throughput.

Penetration into inside room Shadow of

buildings

Coverage hole

BS RS

RS

RS

p g p

◈ RS antenna to obtain LOS channels firstly

NLOS channel conditions can Coverage extension at cell edge

Valley between buildings

BS RSRS

RS

be expected.

▣ In-Building Coverage UM

◈ Service provider or clientsB S

Nom ad ic R S

◈ To provide better coverage and higher throughput in a building.

◈ The RSs can be owned by the if t u tu id b th

B S R S

nfrastructure provider or by the customer

◈ Simple and low cost.

◈ Generally NLOS


◈ Generally NLOS

Usage Models (2/2)

▣ Temporary Coverage UM

◈ Service provider

◈ Temporarily to provide addition

BS

1

NomadicRS

◈ Temporarily to provide additional coverage or capacity

◈ Emergency or Disaster

◈ LOS or NLOS BS

NomadicRS

RS

◈ LOS or NLOS BS

Nomadic RS

Emergency / Disaster Recover

Temporary Coverage

▣ Coverage On Mobile Vehicle UMBS 1

g

◈ Service provider

◈ MS/SS devices which are traveling together on a mobile vehicle.

MS Mobile RS

BS


MILITARY USAGE

▣ Non-Official Model


CONTENTS

I WiBroI


WiBro

II

III

g



V

VI


Status of IEEE 802.16m

▣ PAR P802.16m◈ 2006-12-06, IEEE-SA Standard Boards에서 승인됨

“P802 16 - IEEE Standard for Local and metropolitan area networks -P802.16 - IEEE Standard for Local and metropolitan area networks -Part 16: Air Interface for Fixed Broadband Wireless Access Systems -Amendment: IEEE Standard for Local and metropolitan area networks -Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Advanced Air Interface”

◈프로젝트의 승인된 기간: 2006-12-06 ~ 2010-12-06Expected Date of Submission for Initial Sponsor Ballot: Mar. 2009Projected Completion Date for Submittal to RevCom: Sep 2009Projected Completion Date for Submittal to RevCom: Sep. 2009

◈ Scope“This standard amends the IEEE 802.16 WirelessMAN-OFDMAspecification to provide an advanced air interface for operation in specification to provide an advanced air interface for operation inlicensed bands. It meets the cellular layer requirements of IMT-Advanced next generation mobile networks. This amendment provides continuing support for legacy WirelessMAN-OFDMA equipment.“

( Th h t b t th l l f b k d(* There has not been a concrete consensus on the level of backward-compatibility until now.)



▣ Purpose of the Proposed Standard:

◈ To provide performance improvements necessary to support future d d i d li ti h th d ib d badvanced services and applications, such as those described by

the ITU in Report ITU-R M.2072.

▣ Additional Explanatory Notes:

◈ PAR의 제목: “IEEE Standard for Local and metropolitan area networks – Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Advanced Air Interface”가 되어야 하나, PAR 문서가 자동으로 이렇게 변경되는 것을 허용하지 않음.

Baseline 문서에는 “and Mobile”이라는 단어가 반드시 포함될 것임.(기존 IEEE 802.16e-2005에도 포함되어 있음)

◈ Some Specific Target Requirements:100 Mb/s – high mobility

Frequency bands – licensed below 6 GHzq y

Target cell size – Micro and Macro-cells as defined in Table 7-15 of Report ITU-R M.2078



▣ Documents to be developed in TGm (IEEE 802.16m)

◈ Usage Models/Deployment Scenarios & System Requirements

A set of possible deployment scenarios and applications of the 802.16m standard.

A set of performance targets and features that 802.16m compliant systems shall meet or exceedsystems shall meet or exceed.

◈ Evaluation methodology

A complete set of parameters, models, and methodologies for the link level and system level simulations that allow fairlink-level and system-level simulations that allow fair evaluation/comparison of various technical proposals

Channel Models: A set of spatial channel model parameters are specified to characterize particular features of MIMO radio channels tospecified to characterize particular features of MIMO radio channels to be used for simulating technical proposals for the future 802.16m standard.

◈ IEEE 802.16m amendment◈

◈ 802.16 IMT-Advanced Proposal


Proposed Schedule

▣ Consideration for IMT-Advanced Schedule


THANKS FOR YOUR ATTENTIONS

▣ Comments and Questions

▣ E-mail: [email protected]
