Frame Structure for multi-hop relay and Postamble for...

Frame Structure for multi-hop relay and Postamble for relay link

IEEE 802.16 Presentation Submission Template (Rev. 8.3)Document Number:

IEEE S802.16j-07/135Date Submitted:

2007-01-16Source:

Changyoon Oh, Youngbin Chang, Hyunjeong Kang, Sungjin Lee, Mihyun Lee,Hyoung Kyu Lim, Jaeweon Cho, Panyuh JooVoice: +82-31-279-7529

Samsung Electronics Co., Ltd. Fax: +82-31-279-5130416 Maetan-3, Suwon, 442-600, Korea E-mail: [email protected]

Rakesh TaoriSamsung Advanced Institute of TechnologyC.P.O. Box 1142, Seoul, 100-611, Korea

Venue:IEEE 802.16 Session #47, London, U.K.

Base Document:C80216j-07/135, C80216j-07/136

Purpose:The purpose of this slide is to support proposed frame structure for multi-hop relay and postamble for relay link.

Notice:This document has been prepared to assist IEEE 802.16. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.

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Frame structure for multi-hop relay and postamble for relay link:

#07/135, #07/136

ChangyoonChangyoon Oh, Oh, YoungbinYoungbin Chang, Chang, HyunjeongHyunjeong Kang, Kang, SungjinSungjin Lee, Lee, MihyunMihyun Lee, Lee, HyoungHyoung KyuKyu Lim, Lim, JaeweonJaeweon Cho, Cho,

Panyuh JooPanyuh Joo

Samsung Electronics Co., Ltd.Samsung Electronics Co., Ltd.

Rakesh TaoriRakesh Taori

Samsung Advanced Institute of TechnologySamsung Advanced Institute of Technology

January, 2007

Outline

Frame Structure for Multi-hop relay

• Postamble for the relay link

• Summary

1

4

Frame structure for multi-hop relay

#07/135

Frame structure for multi-hop relayGeneralized frame structure

Exactly follows the text that is agreed in the November meeting

With signaling and scheduling, configuration of some example frame structures can be derived

Minimum configuration of frame structureMinimum configuration of frame structure

Aligned with Figure 218 (802.16e) in the level of detailAligned with Figure 218 (802.16e) in the level of detail

Same level of frame structure is providedSame level of frame structure is provided

Term changeTerm change

Access/Relay Access/Relay zonezone => Access/Relay => Access/Relay intervalinterval

To avoid confusion with existing term in 802.16eTo avoid confusion with existing term in 802.16e

In the generalized frame structure, In the generalized frame structure,

The first access interval shall include preamble, FCH, DL(UL)The first access interval shall include preamble, FCH, DL(UL)--MAPMAP

The additional access interval shall not include The additional access interval shall not include preamble,FCH,DL(ULpreamble,FCH,DL(UL))--MAPMAP

2

Generalized Frame Structure (GFS)

5With signaling and scheduling, GFS can support various configuraWith signaling and scheduling, GFS can support various configurationstions

Configuration #1 from GFS

DL Sub-frame UL Sub-frame

Prea

mbl

e

MR-

BS F

ram

ew

ith M

ultip

le

Inte

rval

DL R

elay

In

terv

al

DL

Acc

ess

Inte

rval

UL R

elay

In

terv

al

UL

Acc

ess

Inte

rval

1st h

op

RS

Fram

ew

ith M

ultip

le

Inte

rval

2nd

hop

RS F

ram

ew

ith M

ultip

le

Inte

rval

DL Access Interval or DL relay Interval

Prea

mbl

e

DL

Rel

ay

Inte

rval

(Rx)

DL

Acce

ss

Inte

rval

UL

Rel

ay

Inte

rval

(Tx)

UL

Acce

ss

Inte

rval

Prea

mbl

e

DL

Acce

ss

Inte

rval

UL

Acce

ss

Inte

rval


UL Access Interval or UL relay Interval






UL Access Interval or UL relay IntervalDL Access Interval or DL relay Interval

Region 1

Region 1

Region 2

Region 2

Region 2

Region 2Region 1

Region 1

Region 1 Region 1 Region 2Region 2Region 3 Region 3

DL R

elay

In

terv

al (T

x)D

L R

elay

In

terv

al (R

x)

UL R

elay

In

terv

al(R

x)

UL R

elay

In

terv

al(T

x)

5

11stst hop RS enables region 1 for relay intervalhop RS enables region 1 for relay interval22ndnd hop RS enables region 1 for relay interval hop RS enables region 1 for relay interval

5


Prea

mbl

e

MR-

BS F

ram

ew

ith M

ultip

le

Inte

rval

DL R

elay

In

terv

al

DL

Acc

ess

Inte

rval

UL R

elay

In

terv

al

UL

Acc

ess

Inte

rval

1st h

op

RS

Fram

ew

ith M

ultip

le

Inte

rval

2nd

hop

RS F

ram

ew

ith M

ultip

le

Inte

rval


Prea

mbl

e

DL

Rel

ay

Inte

rval

(Rx)

DL

Acce

ss

Inte

rval

UL

Rel

ay

Inte

rval

(Tx)

UL

Acce

ss

Inte

rval

Prea

mbl

e

DL

Acce

ss

Inte

rval

UL

Acce

ss

Inte

rval









Region 1

Region 1

Region 2

Region 2

Region 2

Region 2Region 1

Region 1


DL

Rel

ay

Inte

rval

(Tx)

DL

Rel

ay

Inte

rval

(Rx)

UL

Rel

ay

Inte

rval

(Rx)

UL

Rel

ay

Inte

rval

(Tx)


11stst hop RS enables region 2 for relay intervalhop RS enables region 2 for relay interval22ndnd hop RS enables region 2 for relay interval hop RS enables region 2 for relay interval


5


Prea

mbl

e

MR-

BS F

ram

ew

ith M

ultip

le

Inte

rval

DL R

elay

In

terv

al

DL

Acc

ess

Inte

rval

UL R

elay

In

terv

al

UL

Acc

ess

Inte

rval

1st h

op

RS

Fram

ew

ith M

ultip

le

Inte

rval

2nd

hop

RS F

ram

ew

ith M

ultip

le

Inte

rval


Prea

mbl

e

DL

Rel

ay

Inte

rval

(Rx)

DL

Acce

ss

Inte

rval

UL

Rel

ay

Inte

rval

(Tx)

UL

Acce

ss

Inte

rval

Prea

mbl

e

DL

Acce

ss

Inte

rval

UL

Acce

ss

Inte

rval









Region 1

Region 1

Region 2

Region 2

Region 2

Region 2Region 1

Region 1


DL

Rel

ay

Inte

rval

(Tx)

DL

Rel

ay

Inte

rval

(Rx)

UL

Rel

ay

Inte

rval

(Rx)

UL

Rel

ay

Inte

rval

(Tx)

11stst hop RS enables region 2 for relay interval and access intervalhop RS enables region 2 for relay interval and access interval22ndnd hop RS enables region 2 for relay interval and access intervalhop RS enables region 2 for relay interval and access interval

Configuration #4 of GFS

5

(J) th Frame (J+1)th Frame

DL Subframe DL SubframeUL Subframe UL Subframe


Prea

mbl

e

MR

-BS

Fra

me

with

Mul

tiple

In

terv

al

DL R

elay

In

terv

al

DL

Acce

ss

Inte

rval

UL R

elay

In

terv

al

UL

Acce

ss

Inte

rval

1st h

op

RS

Fram

ew

ith M

ultip

le

Inte

rval

2nd

hop

RS

Fram

ew

ith M

ultip

le

Inte

rval


Prea

mbl

e

DL

Rel

ay

Inte

rval

(Rx)

DL

Acce

ss

Inte

rval

UL

Rel

ay

Inte

rval

(Tx)

UL

Acce

ss

Inte

rval

Pre

ambl

e

DL

Acc

ess

Inte

rval

UL

Acc

ess

Inte

rval









Region 1

Region 1

Region 2

Region 2

Region 2

Region 2Region 1

Region 1


DL R

elay

In

terv

al (T

x)D

L R

elay

In

terv

al (R

x)

UL R

elay

In

terv

al(R

x)

UL R

elay

In

terv

al(T

x)

Minimum Configuration of the inbandframe structure

5

Pre

ambl

eP

ream

ble

MR

-BS

Fram

eR

S Fr

ame

--PreviousPrevious--(High level) (High level)

--ProposedProposed--(Same level as Figure 218 in 802.16e) (Same level as Figure 218 in 802.16e)

Postamble for the relay link#07/136

Amble for the relay link

Time Aligned amble location Time Aligned amble location Synchronization for the relay link

Neighbor scanning

Flexible relay zoneTo support Load balancing (access zone/relay zone)

Postamble can support flexible access/relay zone

2

Amble location for the relay link-Postamble-

2

Relay link

Access link

Acces

s link

Access linkRel

ay link

Acce

ss lin

k

Access link

Access

link

Both flexibility and time alignment can be satisfiedBoth flexibility and time alignment can be satisfied

BS1→MS01(Tx.)

BS1→RS1(Tx.)

MS01→BS1(Rx.)

RS1→BS1(Rx.)

RS1→MS1(Tx.)

BS1→RS1(Rx.)

MS1→RS1(Rx.)

RS1→BS1(Tx.)

frame DL subframe UL subframe

TTG

Access Zone

Access Zone Relay Zone

BS2→MS02(Tx.)

BS→RS1(Tx.)

MS02→BS2(Rx.)

RS2→BS2(Rx.)

RS2→MS2(Tx.)

BS2→RS2(Rx.)

MS2→RS2(Rx.)

RS2→BS2(Tx.)


TTG

Access Zone


BS1

RS1

BS2

RS2

ambLe

ambLe

Amble location for the relay link-Preamble-

2Both flexibility and time alignment can Both flexibility and time alignment can notnot be satisfied be satisfied simultaneouslysimultaneously

BS1→MS01(Tx.)

BS1→RS1(Tx.)

MS01→BS1(Rx.)

RS1→BS1(Rx.)

RS1→MS1(Tx.)

BS1→RS1(Rx.)

MS1→RS1(Rx.)

RS1→BS1(Tx.)


TTG

Access Zone


BS2→MS02

(Tx.)

BS→RS1(Tx.)

MS02→BS2(Rx.)

RS2→BS2(Rx.)

RS2→MS2(Tx.)

BS2→RS2(Rx.)

MS2→RS2(Rx.)

RS2→BS2(Tx.)


TTG

Access Zone


BS1

RS1

BS2

RS2

ambLe

ambLe

--flexibility is satisfiedflexibility is satisfiedHowever, time alignment is However, time alignment is not not satisfiedsatisfied--

--time alignment is satisfiedtime alignment is satisfiedHowever, flexibility is However, flexibility is notnot satisfiedsatisfied--

Amble location for the relay link-Postamble-

2Both flexibility and time alignment can be satisfied simultaneoBoth flexibility and time alignment can be satisfied simultaneouslyusly

Amble location for the relay link-Preamble-

2Both flexibility and time alignment can Both flexibility and time alignment can notnot be satisfied be satisfied simultaneouslysimultaneously

BS1→MS01(Tx.)

BS1→RS1(Tx.)

MS01→BS1(Rx.)

RS1→BS1(Rx.)

RS1→MS1(Tx.)

RS1→RS3(Tx.)

MS1→RS1(Rx.)

RS1→BS1(Tx.)


TTG

BS1

RS1

BS2

RS2

ambLe

RS3RS3→MS3(Tx.)

RS3 →RS6(Tx.)

MS2→RS11(Rx.)

RS6→RS3(Rx.)

BS1→RS1(Rx.)

RS1→RS3(Rx.)

ambLe

BS2→MS02(Tx.)

BS2→RS2(Tx.)

MS02→BS2(Rx.)

RS2→BS2(Rx.)

RS2→MS2(Tx.)

RS2→RS4(Tx.)

MS2→RS2(Rx.)

RS2→BS2(Tx.)


TTGambLe

RS4→MS4(Tx.)

RS4 →RS7(Tx.)

MS4→RS4(Rx.)

RS7→RS4(Rx.)

BS2→RS2(Rx.)

RS2→RS4(Rx.)

ambLe

RS4

RS3→RS1(Rx.)

RS3→RS1(Tx.)

RS4→

RS2(Rx.)

RS4→

RS2(Tx.)

--flexibility is satisfiedflexibility is satisfiedHowever, time alignment is However, time alignment is notnot satisfiedsatisfied--

--time alignment is satisfiedtime alignment is satisfiedHHowever, flexibility is owever, flexibility is notnot satisfiedsatisfied--

BS1→MS01(Tx.)

BS1→RS1(Tx.)

MS01→BS1(Rx.)

RS1→BS1(Rx.)

RS1→MS1(Tx.)

RS1→RS3(Tx.)

MS1→RS1(Rx.)

RS1→BS1(Tx.)


TTG

BS1

RS1

BS2

RS2

ambLe

RS3RS3→MS3(Tx.)

RS3 →RS6(Tx.)

MS2→RS11(Rx.)

RS6→RS3(Rx.)

BS1→RS1(Rx.)

RS1→RS3(Rx.)

ambLe

BS2→MS02(Tx.)

BS2→RS2(Tx.)

MS02→BS2(Rx.)

RS2→BS2(Rx.)

RS2→MS2(Tx.)

RS2→RS4(Tx.)

MS2→RS2(Rx.)

RS2→BS2(Tx.)


TTGambLe

RS4→MS4(Tx.)

RS4 →RS7(Tx.)

MS4→RS4(Rx.)

RS7→RS4(Rx.)

BS2→RS2(Rx.)

RS2→RS4(Rx.)

ambLe

RS4

RS3→RS1(Rx.)

RS3→RS1(Tx.)

RS4→

RS2(Rx.)

RS4→

RS2(Tx.)

Performance Result-Load Balancing-

5

DL DL SubframeSubframe

DL Access ZoneDL Access Zone DL Relay ZoneDL Relay Zone

Flexible BoundaryFlexible BoundarySStep size: 1 OFDMA symboltep size: 1 OFDMA symbol

1 frame: 42 OFDMA symbols1 frame: 42 OFDMA symbolsDL DL subframesubframe: UL : UL subframesubframe=27:15 =27:15

UL UL SubframeSubframe

Load Balancing (Simulation Parameter)

5

Ethernet model (Average rate ~100kbps)Arrival process: Pareto distribution(a=1.3)Average packet size=2944.8bits

Traffic model

Round RobinScheduling

3km/hMobile speed

Path-loss: NLOS (Winner model), Shadow fading: 8dBMulti-path fading: ITU-R Pedestrian A model

Channel model(BS-MS link/RS-MS link)

Path-loss: LOS(Winner model), Shadow fading:3.4dBChannel model(BS-RS link)

10WRS Power

20WBS Power

6 Fixed RS per cell, 2/3 position from MR-BSRS configuration

No (omni antenna)Sectorization

1kmCell radius

10 cells-wrap aroundCell layout

10MHzBandwidth

2.3GHzFrequency Band

Cell Throughput Comparison(No Load Balancing (No LB) vs. Load Balancing(LB)

5

6.4

6.6

6.8

7

7.2

7.4

7.6

7.8

8

8.2

8.4

thro

ug

hp

ut

(Mb

it/s

)

No LB LB

14%14%

Number of users in a cell: 100Number of users in a cell: 100

Frame Structure for multi-hop relay

Generalized frame structure

Supports various multi-hop frame structure configurations

Detailed minimum configuration of frame structure

Term change: zone => interval

The first access interval shall include preamble, FCH, DL(UL) MAP

Postamble for the relay link

Time aligned amble location

Postamble supports both time alignment and flexibility of resource

allocation between access and relay intervals.

Summary

20

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