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Suk Chan KimCommunication Systems Laboratory,
Dept. Electronics Engineering, PNU
Pusan National University
Dept. Electronics Engineering, PNU Email: [email protected]
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• Introduction
• IEEE 802.16j Overview• IEEE 802.16j Overview
• Technical Issues• Technical Issues
• Performance Evaluation
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3.5 G~3.99G3G
HSPA+3GPP LTEHSDPA
WCDMA
EVDO R.BR.B
802.16eMIMO-
EVDO R.A
MIMO-OFDMA
R.A
802.16e
EVDO R.0
802.16eOFDMA
WiBro
Wi-FiOFDM
WiMAX
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802.16802.16--2004 Fixed Applications2004 Fixed Applications(Licensed/Unlicensed(Licensed/Unlicensed-- NonNon--LOS: < 11GHz LOS: < 11GHz
& LOS: 10& LOS: 10--66GHz)66GHz)
IEEE 802.20WMAN 802.16
WLAN IEEE
& LOS: 10& LOS: 10--66GHz)66GHz)
WLAN IEEE 802.11UWB, BLUETOOTH
Global IEEE 802.15 802.16e Fixed and Mobile 802.16e Fixed and Mobile
(Licensed : Non(Licensed : Non--LOS: < 6GHz)LOS: < 6GHz)Global Wireless
Standards
(Licensed : Non(Licensed : Non--LOS: < 6GHz)LOS: < 6GHz)
802.16j MMR Mobile Multi-hop RelayMobile Multi-hop Relay
March 2006
802.16m WiMAX 2 IMT - AdvancedIMT - Advanced
Nov 2006
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• Uniform broadband experience• Uniform broadband experience– Overcome user throughput dependency on distance-to-BS
• Mobile multihop relay (MMR):• Mobile multihop relay (MMR):– The system function that enables mobile stations to communicate
with a base station through intermediate relay stationswith a base station through intermediate relay stations
• MMR-base station (MMR-BS):– A base station that is compliant with IEEE Std 802.16j and IEEE – A base station that is compliant with IEEE Std 802.16j and IEEE
Std 802.16e
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• Capability of RS (Relay Station)• Capability of RS (Relay Station)– Enhance Throughput & Extend Coverage– Simple implementation, low cost– Simple implementation, low cost– Compatible with IEEE 802.16e– Not just amplify-and-forward (AF), or decode-and-forward (DF)
• Relay station (RS) Type:– Fixed relay station (FRS):– Nomadic relay station (NRS):– Nomadic relay station (NRS):– Mobile relay station (MRS):
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• The usage modelsI. Fixed Infrastructure Usage ModelII. In-Building Coverage Usage ModelII. In-Building Coverage Usage ModelIII. Temporary Coverage Usage ModelIII. Temporary Coverage Usage ModelIV. Coverage on Mobile Vehicle Usage Model
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I. Fixed Infrastructure Usage ModelI. Fixed Infrastructure Usage Model
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II. In-Building Coverage Usage ModelII. In-Building Coverage Usage Model
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III. Temporary Coverage Usage ModelIII. Temporary Coverage Usage Model
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IV. Coverage on Mobile Vehicle Usage ModelIV. Coverage on Mobile Vehicle Usage Model
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Frame k Frame k+1
TTG RTG
DL Sub-frame UL Sub-frame
MR-BS MS/RS UL Relay Zone
UL Access Zone
Ranging
Optional Transparent Zone
Prea
mbl
e
FCH
DL MAP
BS
Fram
e UL MAP
Optional R-MAP
Ranging subchannel
P
UL MAPM
R-B
Frame k
DL Sub-frame UL Sub-frame
Frame k+1
MR-BS MS/RS Optional Transparent Zone
UL Access Zone
UL Relay Zone
zatio
n
Receiving
Recei
TTG RTGm
e
Receiving
Zone Zone Zone
Syn
chro
niz Recei
ving
ReceivingR
S Fr
am
Relay RTG Relay RTG
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Click to add text
MR-BS → MR-BSMR-BS1 MR-BS2
MR-BS → MR-BS
RS → MR-BS MR-BS → RSRS → MR-BS
MR-BS → RS RS
RS RS RSRS → RS
MR-BS → RS
RS → RS
RS
RS → RS RS → RS
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• Original signal is received by several RSs, and • Original signal is received by several RSs, and forwarded to the destination through different paths
• Allowing a set of multiple signal sources to transmit correlated datacorrelated data
– Achieve cooperative diversity gain to improve the performance of the relay networkrelay network
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• Cooperative source diversity– Multiple signal sources simultaneously transmit the same signal using
the same time-frequency resource
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• Cooperative transmit diversity• Cooperative transmit diversity– Uses space-time block codes across different physical signal sources– This method is based on the use of transmit diversity using STBCs– This method is based on the use of transmit diversity using STBCs
– The received signal from different sources are different, each signal source different, each signal source playing the role of different transmit antenna in the transmit antenna in the conventional STC
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• Cooperative hybrid diversity– The two cooperative relaying schemes can be combined– The two cooperative relaying schemes can be combined– If the number of signal sources are greater than the number M in a Mx1
STBC scheme, multiple signal source transmit the same STBC encoded STBC scheme, multiple signal source transmit the same STBC encoded signal
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• Better BER performance
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• Link robustness
VS
One path survivedNot Survived One path survivedNot Survived
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• BW request• BW request• Network Entry• Network Entry• Security• Construction & transmission of MAC PDUs• Measurement & reporting• Measurement & reporting• Mobility management• Mobility management• Routing, path, connection & service flow management• RRM, scheduling & interference control• HARQ• HARQ
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MultiMulti--hop Relay System Evaluation Methodologyhop Relay System Evaluation MethodologyMultiMulti--hop Relay System Evaluation Methodologyhop Relay System Evaluation Methodology
• Simulation Overview
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Category DescriptionCategory DescriptionMacro-cell suburban, ART to BRT for hilly
Type AMacro-cell suburban, ART to BRT for hilly
terrain with moderate-to-heavy tree densities.
LOS/NLOS
Type B Macro-cell suburban, ART to BRT for intermediate path-loss condition. LOS/NLOS
Type C Macro-cell suburban, ART to BRT for flat terrain with light tree densities. LOS/NLOS
Type D Macro-cell suburban, ART to ART LOSType E Macro-cell, urban, ART to BRT NLOSType E Macro-cell, urban, ART to BRT NLOS
Type F Urban or suburban, BRT to BRT.LOS
NLOSType F Urban or suburban, BRT to BRT.
NLOSType G Indoor Office LOS/NLOSType H Macro-cell, urban, ART to ART LOSType J Outdoor to indoor NLOS
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Type J Outdoor to indoor NLOS
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• The level of shadow fading (in dB) is usually simulated by dropping a normal distributed random simulated by dropping a normal distributed random variable, this refers to typical log-normal shadow fading modelfading model
• Standard deviation of the shadowing• Standard deviation of the shadowing– The typical values based on WINNER models of the standard deviation
for lognormal shadowing for lognormal shadowing
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• Throughput Enhancement• Throughput Enhancement1.8
2 WiBro 1500
WiBro 1.2
1.4
1.6
WiBro0.6
0.8
1
0 0.5 1 1.50
0.2
0.4
1.8
2 WiBro 1 RS : 600/1500, Trans
0 0.5 1 1.50
1.2
1.4
1.6
WiBroMMR
0.6
0.8
1MMR
0 0.5 1 1.50
0.2
0.4
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0 0.5 1 1.5
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• Coverage Extension• Coverage Extension1.8
2 WiBro 1500
WiBro 1.2
1.4
1.6
WiBro0.6
0.8
1
0 0.5 1 1.50
0.2
0.4
1.8
2 WiBro 2 RS : 800,1200,1600/2000
0 0.5 1 1.50
WiBroMMR
1.2
1.4
1.6
MMR0.6
0.8
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 20
0.2
0.4
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• Cooperative relay under SUI 2(LOS) • Cooperative relay under SUI 4(NLOS) • Cooperative relay under SUI 2(LOS) with correlated shadow model
• Cooperative relay under SUI 4(NLOS) with correlated shadow model
100 100 100 Single0deg30deg60deg90deg
100
10-1
BLE
R
90deg120deg150deg180deg
10-1
BLE
R
BLE
R
BLE
R
Single0deg30deg
10-210-2
30deg60deg90deg120deg150deg
0 2 4 6 8 10 12 14 16 18 20Es/No
0 5 10 15 20 25 30
Es/No
180deg
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Suk Chan KimPusan National University, Electronic, Electrical and Communication Engineering Electronic, Electrical and Communication Engineering Communication Systems Laboratory,Email: [email protected]
Pusan National University