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HSDPA Roadmap

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SR3420 WCDMA Network Emulator

• SR3420 is a new WCDMA network emulator platform designed specifically for HSDPA (and beyond …)

• Significant signal processing resources and high fidelity RF design enables a rich roadmap of field upgradeable features Initial HSDPA release (Phase 1) will support 3.6Mbps

Future releases:

• 14Mbps

• Advanced scheduler algorithms, dummy-user traffic profiles

• HSDPA mobility testing

• Enhanced uplink (EU-DCH)

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SR3420 Roadmap

• July 2005 Pre-release of AirAccess-HSDPA

• Full call processing and support for 1.8 Mbps (Cat 12)

• September 2005 Phase 1 Commercial release of AirAccess-HSDPA

• Single cell support for 3.6 Mbps (Cat 6) with R99 backwards compatibility

• Controllable MAC-hs

• Throughput and CQI statistics

• 34.121 Fixed Reference Channels (FRC)

• 34.121 Section 9 “manual mode” testing

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SR3420 Roadmap

• December 2005 U-ATS release for Section 9

• 1H2006 Phase 2 Commercial release for AirAccess-HSDPA

• Single cell HSDPA with multi-cell, multi-carrier R99 (all within one instrument)

• Support for 14 Mbps (Cat 10)

• Advanced mobility testing (HS ↔ HS intra and inter NodeB handovers, HS ↔ R99)

• Configurable scheduler

• Dynamic cell loading for HS and DCH

• Support full validation of Section 9

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Moving to HSDPA

SR3410 SR3420Phase 1

Up to six R99 cells One HSDPA cell

One HSDPA cell + five additional R99 cells

SR3420Phase 2

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AirAccess for HSDPA

• AirAccess provides a single common user interface to SR3410 (R99) and SR3420 (HSDPA) Build upon familiar and flexible GUI Seamless addition of HSDPA functionality

• SW can connect to either SR3410 or SR3420

SR3410

SR3420

ETH Hub

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AirAccess for HSDPA

MAC-hs configuration

HS-DSCH details

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AirAccess for HSDPA

HSDPA Channelization Settings

MAC-hs statistics

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SR3420 in U-ATS

• SR3420 will be the central HW piece of a 34.121 Section 9 upgrade for U-ATS Seamlessly incorporated into U-ATS TestDrive SW through S-

API control of AirAccess WCDMA

SR3420 provides Section 9 coverage

R99 and HSDPA complete RF and RRM testing in one integrated system and through one SW application

Build upon U-ATS systems experience e.g. calibration, automation, and ease-of-use

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SR3420 HSDPA Detailed Features

System Configuration   Phase 1 Phase 2

One HSDPA cell with R99 backwards compatibility

One HSDPA cell with R99 backwards compatibility + five additional R99 cells (multi NodeB)

Cell Configuration  

RF Cell Power (Ior max)

RF Channel Frequency (TX & RX)

OB 1, 2, 5, 6

OB 3, 4

HSDPA OCNS

Transmit Diversity for HSDPA

Cell  Capacity  

Simultaneous DL transmission of PCPICH, SCH, PCCPCH, SCCPCH, AICH, PICH, HS-PDSCHs(5), HS-SCCHs(4), DPCH, and OCNS

Simultaneous DL transmission of PCPICH, SCH, PCCPCH, SCCPCH, AICH, PICH, HS-PDSCHs(15), HS-SCCHs(4), DPCH, and OCNS

Simultaneous UL reception of  (DPCCH, DPDCH, HS_DPCCH) or  (PRACH control, PRACH msg, HS_DPCCH)

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SR3420 HSDPA Detailed Features

HSDPA MAC-hs   Phase 1 Phase 2

UTRAN MAC-hs defined in 25.321

Round robin scheduler

Proportionally fair scheduler

Transmission to the UE every “Inter-TTI Distance”

Support the response requirement per 34.121 upon reception of ACK, NACK, and DTX

Periodic reporting of the number of ACK, NACK, DTX received by MAC-hs to the higher layers

Periodic reporting of CQI received from the UE to the higher layers

34.121 Reference Channels for HSDPA  

Fixed Reference Channel Definition H-Set 1 534kbps (QPSK) and 777kbps (16QAM)

Fixed Reference Channel Definition H-Set 2 801kbps (QPSK) and 1166kbps (16QAM)

Fixed Reference Channel Definition H-Set 3 1601kbps (QPSK) and 2332kbps (16QAM)

Fixed Reference Channel Definition H-Set 4 534kbps (QPSK)

Fixed Reference Channel Definition H-Set 5 801kbps (QPSK)