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
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
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
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
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
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
Rel
ay
Inte
rval
(Tx)
DL
Rel
ay
Inte
rval
(Rx)
UL
Rel
ay
Inte
rval
(Rx)
UL
Rel
ay
Inte
rval
(Tx)
Configuration #2 from GFS
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
Configuration #3 from GFS
5
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
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
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
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
DL Sub-frame UL Sub-frame
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
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
Pre
ambl
e
DL
Acc
ess
Inte
rval
UL
Acc
ess
Inte
rval
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
UL Access Interval or UL relay Interval
DL Access Interval or DL relay Interval
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)
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.)
frame DL subframe UL subframe
TTG
Access Zone
Access Zone Relay 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.)
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.)
frame DL subframe UL subframe
TTG
Access Zone
Access Zone Relay 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.)
frame DL subframe UL subframe
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.)
frame DL subframe UL subframe
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.)
frame DL subframe UL subframe
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.)
frame DL subframe UL subframe
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