HSDPA & EUL
Marcin Mikuszewski
Content
Short history notice HSDPA High Speed Downlink Packet Access EUL Enhanced Uplink HSPA Evolution
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Short history notice
Release 99 (December 99)
CS and PS R99 Radio Bearers MMS
Release 4 (March 2001)
Enhancements TD-SCDMA
Release 5 (March 2002)
HSDPA IMS AMR-WB
Release 6 (March 2005)
EUL MBMS WLAN-UMTS interworking
Release 7 (September 2007)
HSPA Evolution;
DL 64 QAM 16 QAM UL CPC
Release 8
LTE SAE DC HSDPA
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High Speed Dowlink Packet Access
HSDPA (not only) key concept
Quality of radio channel varies Pattern for traffic varies
Radio Channel and Traffic variations [2]
Exploit and adapt to channel and traffic variations!
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Dedicated vs Shared
Dedicated channel for each user ? Shared channel for all users ?
HSHS-DSCH High Speed Downlink Shared Channel
Dedicated Channels
Shared Channel
For packet-data applications it is better to use SHARED channel!
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Shared Channel and Multi Code Transmission
Channelization Codes
Time TTI=2ms
User 1
User 2
HSDPA Code multiplexing [2]
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Power and Rate Control
Power Control
Tx power Data rate Data rate Channel Quality
Rate Control
Tx power Channel Quality
Power and Rate Control [1]
Rate Control is more efficient than power control !!!
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Channel Dependent Scheduling
#1
#2
Effective channel variations seen by the base station
High data rates
Scheduled user User 1
Channel quality
User 2
Low data rates
#1
#2
#1
#2
#1
#2
Time
HSDPA Channel Dependent Scheduling [2]
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Channel Type Scheduling
User #1
User #2 Time
Round Robin
Channel Quality
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Channel Quality
Link Adaptation
High data rates
16QAM
QPSK
Low data rates
HSDPA Fast Link Adaptation [2]
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Higher Order Modulation
QPSK 2 bits/symbol
1616-QAM 4 bits/symbol
HSDPA Higher Order Modulation [1]
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Hybrid Automatic Repeat reQuest
N AC K
ACK
Simplified Hybrid ARQ. [2]
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ACK
WCDMA network architecture
Core CoreNetwork Network Iu Iu
RNC Iur
RNC
Iub Dedicated Channels
Iub
NodeB
NodeB
Serving cell
NonNon-serving cell
WCDMA Network Architecture [1]
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HSDPA - Architecture
Core CoreNetwork Network Iu Iu
RNC Iur
MAC-hs Functionality: Hybrid ARQ Scheduling Rate Adaptation
RNC
Iub (F(F-)DPCH in DL DCH in UL
HS - D SCH
Iub
NodeB
NodeB
Serving cell
NonNon-serving cell
HSDPA Network Architecture [1]
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HSDPA - Channels
New channels HSHS-SCCH High Speed Shared Control Channel HSHS-DPCCH High Speed Dedicated Physical Common Control Channel HSHS-DSCH High Speed Downlink Shared Channel
HS SCC
HS DSC H DCH HS (D P DPC CH PDC H
CCH /D
HSDPA Channels
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HSDPA - Channels
Shared, per cell
Dedicated, oer Ue
HSHS-DSCH Downlink user data
HSHS-SCCH Control signaling for HSHS-DSCH
(F(F-)DPCH Power control commands
DPDCH Uplink user data
DPCCH Control signaling for DPDCH
HSHS-DPCCH Control signaling related to HSHS-DSCH transmission
HSDPA Channels
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Terminal Categories [2]
UE Category Category 1 Category 2 Category 3 Category 4 Category 5 Category 6 Category 7 Category 8 Category 9 Category 10 Category 11 Category 12 Maximum number of HS-DSCH codes 5 5 5 5 5 5 10 10 15 15 5 5 Layer 1 peak rate [Mbps] 1.2 1.2 1.8 1.8 3.6 3.6 7.2 7.2 10.2 14.4 0.9 1.8 Minimum inter TTI interval 3 3 2 2 1 1 1 1 1 1 2 1 QPSK 16 QAM Both Both Both Both Both Both Both Both Both Both QPSK QPSK
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Enhanced Uplink
EUL Network Architecture
MAC-es functionality Reordering
Core CoreNetwork Network Iu Iu
RNC Iur
MAC-e functionality Hybrid ARQ Scheduling
RNC
Iub
Iub
MAC-e functionality Hybrid ARQ
E-DC H HS-D SCH
H E-DC
NodeB NonNon-serving cell
NodeB
Serving cell
EUL Network architecture [1]
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EUL Scheduling
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Re qu G es ra t nt
Hybrid ARQ
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N AC K
Simplified Hybrid ARQ. [2]
ACK
ACK
Hybrid ARQ with Soft Handover
P 1,1
P2,1
P 1,1
P2,1
P3,1
P 1,1
P2,1
Simplified Hybrid ARQ for soft handover (EUL)
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EUL Channels
EUL uplink channels E-DCH Enhanced Uplink Dedicated Channel (Transport) E-DPCCH E-DCH Dedicated Physical Control Channel E-DPDCH E-DCH Dedicated Data Control Channel EUL downlink channels E-HICH E-DCH Hybrid ARQ Indicator Channel E-AGCH E-DCH Absolute Grant Channel E-RGCH E-DCH Relative Grant Channel
E-D CH E-D P CCH DCH
E-D P E-H ICH
E-A G E-R G
CH CH
EUL Channels [1]
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EUL Channels
Shared, per cell
Dedicated, per Ue
HSHS-DSCH Downlink user data
HSE-AGCH E-RGCH HS-SCCH Control Absolute Relative signaling for grants grants HSHS-DSCH
E-HICH (F(F-)DPCH Hybrid ARQ Power ACK/NAK control commands
E-DPDCH Uplink user data
E-DPCCH Control Signaling for (E(E-)DPDCH
DPCCH Control Signaling
HSHS-DPCCH Control signaling related to HSHS-DSCH transmission
EUL Channels [1]
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EUL Terminal Categories
UE Category Codes x spreading TTI 2 or 10 ms Layer 1 peak rate 10 ms TTI Layer 1 peak rate 2 ms TTI
Category 1
1 x SF4
10 ms
0.73 Mbps
Category 2
2 x SF4
Both
1.46 Mbps
1.46 Mbps
Category 3
2 x SF4
10 ms
1.46 Mbps
Category 4
2 x SF2
Both
2.0 Mbps
2.92 Mbps
Category 5
2 x SF2
10 ms
2.0 Mbps
Category 6
2 x SF2 + 2 x SF4
Both
2.0 Mbps
5.76 Mbps
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HSPA Evolution
HSPA Evolution
Higher Order Modulation
UPLINK DOWNLINK
QPSK 2 bits/symbol
16 QAM 4 bits/symbol
HSPA Evolution Higher Order Modulation [4]
64 QAM 6 bits/symbol
21 Mbit/s in DL using 64 QAM and 11.52 Mbit/s in UL using 16 QAM
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HSPA Evolution
HSDPA: MIMO Multiple Input Multiple Output
HSPA Evolution MIMO Simplified Picture
28 Mbit/s in DL using 2x2 MIMO
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HSPA Evolution
HSDPA: MIMO + Higher Order Modulation
64 QAM 6 bits/symbol
HSPA Evolution MIMO and 64 QAM combination
42 Mbit/s in DL using 2x2 MIMO and 64QAM
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HSPA Evolution
HSDPA: Dual Carrier and Higher Order Modulation
64 QAM 6 bits/symbol
HSPA Evolution MIMO and Dual Carrier combination
42 Mbit/s in DL using Dual Carrier and 64QAM
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HSPA Evolution
Dual carrier, Higher Order Modulation and MIMO
I
Adjacent carriers
10 MHz 5 MHz
Q
UE
RBS
64 QAM 6 bits/symbol
HSPA Evolution Dual Carrier, MIMO and 64 QAM combination
84 Mbit/s in DL using Dual Carrier, MIMO and 64QAM
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HSPA Evolution
HSDPA: Multi carrier, Higher Order Modulation and MIMO
64 QAM 6 bits/symbol
HSPA Evolution Multi Carrier, MIMO and 64 QAM combination
168 Mbit/s in DL using Multi Carrier, MIMO and 64QAM
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HSPA Evolution
Enhanced Layer 2
HSPA Evolution Enhanced Layer 2 [4]
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HSPA Evolution
MIMO 4x4
Multiuser MIMO [5]
Carrier Aggregation
336 Mbit/s in DL using Multi Carrier (40MHz), MIMO 2x2 and 64QAM 672 Mbit/s in DL using Multi Carrier (40MHz), MIMO 4x4 and 64QAM
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HSPA Evolution
10MHz 5 MHz
UE
Carrier aggregation
RBS
Multi Carrier [5]
23 Mbit/s in UL using Multi Carrier (10MHz) and 16 QAM 70 Mbit/s in UL using Multi Carrier (10MHz), MIMO 2x2 and 64 QAM
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HSDPA Multipoint Transmission
HSDPA Transmission [5]
HSDPA Multipoint Transmission [5]
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Self Optimizing Networks (SON)
RBS
RBS
UE Automatic Neighbor Cell Relations
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More enhancements
Continuous Packet Connectivity Enhanced CELL_FACH EUL for CELL_FACH
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References and Further Reading
References: [1] E. Dahlman, S. Parkvall, J. Skld,P. Beming 3G Evolution : HSPA and LTE for Mobile Broadband 2nd Edition Academic Press 2008 [2] Ericsson White Paper Basic Concept of HSPA February 2007 [3] H. Holma, A. Toskala WCDMA for UMTS HSPA Evolution and LTE 4th Ed John Wiley & Sons Ltd 2007 [4] Andreas Mitschele-Thiel, Jens Mckenheim Enhanced High-Speed Packet Access HSPA+ WS 2008 [5] Nokia Siemens Networks White Paper Long Term HSPA Evolution Mobile broadband evolution beyond 3GPP Release 10 December 2010 Further reading: - Qualcomm Incorporated HSPA+ for Enhanced Mobile Broadband February 2009 - Rhode & Schwarz HSPA+ Technology Introduction Application Note May 2009 - Nomor Research White Paper Dual Cell HSDPA and its Future Evolution January 2009
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Thank You !!!
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