HSUPA Feature.pdf

2013 Nokia Solutions and Networks. All rights reserved.

HSUPA Feature

2 2013 Nokia Solutions and Networks. All rights reserved.

HSUPA Functional Description

Background This feature provides the High Speed Uplink Packet Access (HSUPA) functionality, also

known as Enhanced Uplink DCH (E-DCH). HSUPA functionality is based on the following

techniques:

BTS controlled scheduling of the E-DCH within the limits set by the RNC

Physical layer retransmission handling in the BTS

Objective Increased UL average and peak data rates improve the end user experience. CAPEX

and OPEX savings result from increased cell UL capacity and increased Iub and BTS HW

efficiency. New data service availability increases revenue


HSUPA Dimensioning in RU30

Baseband Dimensioning HSUPA is supported only with co-existence of HSDPA

All cells in the BTS can be enabled for HSUPA

1 HSUPA BTS processing set allows to reach up to 5.8Mbps per HSUPA scheduler with

minimum number of users or 24 HSUPA users with minimum throughput

Baseband reservation provided by one HSUPA BTS processing set equals to 1.5

subunit allocation

With System Module Rel.2, one HSUPA scheduler can support up to 240 HSUPA users

from 1 to 12 cells.

One HSUPA scheduler can be allocated per LCG (or per System Module if frequency

layer mapping to HW is used)

If more than 240 HSUPA users is needed to be supported:

Create two Local Cell Groups => up to 480 HSUPA users supported

With two System Module rel.2 and frequency layers mapping to HW up to two

HSUPA schedulers can be allocated per single LCG (note that frequency mapping to

HW is possible only in one LCG scenario) =>up to 480 HSUPA users supported


HSUPA Feature and License

HSUPA Basic Feature and License Maximum HSUPA Throughput 2 Mbps

Maximum HSUPA user 60 User per BTS

HSUPA Processing Set License < 3x HSUPA PS per BTS

RAN826 Basic HSUPA

HSUPA Basic 3 users per BTS



RAN1465 HSUPA 60 Users per BTS

RAN979 HSUPA 2.0 Mbps

HSUPA Advanced Feature and License Maximum HSUPA Throughput 5.8 Mbps

Maximum HSUPA user 72 User per cell

HSUPA Processing Set License >= 3x HSUPA PS per BTS

RAN1470 HSUPA 2ms TTI

RAN981 HSUPA 5.8 Mbps

HSPA 72 Users per Cell


HSUPA Site Selection Criteria

Site Selection Criteria of Feature HSUPA Basic Enabled HSDPA service with minimum configuration HSDPA 2nd carrier

Maximum HSUPA number per cell basis >= 10 User

Calculate with equation HSUPA capable UE/HSDPA capable UE x Max

Simultaneous. HSDPA user

Assumption total HSUPA user per site basis = 24 User, for 3 sector site, with

Baseband Simultaneous Factor =80%

No limitation of IuB Transmission capacity resource

Site Selection Criteria of HSUPA Advanced Feature (HSUPA 2ms

TTI, HSUPA 5.8 Mbps, and HSPA 72 User Per Cell) Enabled HSUPA Basic service

Percentage of HSUPA capability UE 2ms TTI supported >= 80 % of Total HSUPA UE

HSUPA capability UE 2msTTI supported consists of UE cat 2, UE Cat 4, UE Cat 6

and UE Cat 7

Maximum HSUPA User >= 60 User/BTS

No limitation of IuB Transmission capacity resource


HSUPA Feature Description & HSUPA Feature Activation

HSUPA Basic HSUPA 2 Mbps HSPA 72 User per Cell HSUPA 2ms TTI HSUPA 5.8 Mbps


Current implementation:

Prior to HSUPA, the maximum practical peak bit rate is 384 kbps, UL packet

scheduling is handled by the RNC and retransmissions are handled by the RLC (as

opposed to L1 HARQ retransmissions in HSUPA)

Operational aspects:

HSUPA will dynamically share the baseband capacity with DCH traffic. The minimum

fixed reservation needs to be allocated to HSUPA, but rest of the capacity needed is

dynamically allocated to HSUPA when DCH does not need it. The operator can follow

the capacity need from the counter indicating the number of HSUPA capable UEs in

the cell

Requirement :

Software Requirement

Basic HSUPA Feature Description (i)


Hardware Requirement

This feature does not require any new or additional Hardware

Software Sales Information

Basic HSUPA Feature Description (ii)


Summary:

The highest supported user peak rate on E-DCH is 2.0 Mbps, corresponding to two

parallel codes of spreading factor two (2xSF2) and 10 ms TTI

Benefits for the operator:

HSUPA peak rate is increased up to 2.0 Mbps per user

Requirement



This feature does not require any new or additional Hardware


HSPA 2.0 Mbps Feature Description (i)


Functional description :

HSUPA category 5 UE is capable of 2.0 Mbps peak air interface bit rate. HSUPA

categories 4 and 6 have 2.0 Mbps peak bit rate in case of 10 ms TTI. 2.0 Mbps user

peak rate on E-DCH is supported in RNC and BTS user plane processing and in

configuration (e.g. RLC) of L2 done by L3. BTS supports reception of two SF/2 multi

codes with 10 ms TTI

Current implementation:

The highest supported user peak rate on E-DCH is 1.44 Mbps, corresponding to two

parallel codes of spreading factor four (2xSF4) and 10 ms TTI.

HSPA 2.0 Mbps Feature Description (ii)


Activating Basic HSUPA:

Before start

This feature belongs to application software. Ensure that you have a valid licence. This feature is under licence key management. To set the feature state to ON, use the following command: for IPA-RNC: ZW7M: FEA=623:ON; for mcRNC:

set license feature-mgmt id 0000000623 feature-admin-state on Features RAN826: Basic HSUPA, RAN973: HSUPA Basic RRM, RAN968: HSUPA BTS Packet Scheduler and RAN970: HSUPA Handovers can be activated when one of the following licenses is activated: HSUPA Basic 3 users per BTS (feature code: 962) HSUPA Basic 12 users per BTS (feature code: 961) HSUPA Basic 24 users per BTS (feature code: 624) HSUPA 60 users per BTS (feature code: 1088)

Note that HSUPA can only be activated if HSDPA is enabled beforehand. In addition to this, HSDPA Dynamic Resource Allocation also needs to be enabled. It is possible to set up HSUPA configuration in the cell without HSDPA Mobility feature, but it is not possible to allocate E-DCH users in the cell. Before configuring HSDPA and HSUPA, a DMPG pool needs to be configured. The RNC RNW and COCO parameters can be configured using the RNC RNW Object Browser GUI, and the AXC parameters using AXC Element Manager and the FTM parameters using BTS Site Manager.

Basic HSUPA and HSUPA 2 Mbps Feature Activation (i)


Step:

Open the OMS Element Manager

Go to the Tree View

Expand the topology tree of the RNC

Open the RNC object

Select Edit parameters from the RNC object

Configure the following RNC parameters

Select Edit parameters from the RNC object EDCHQOSClasses; HappyBitDelayConditionEDCH; EDCHMaxNumberOfHARQReTx;

EDCHMACdFlowThroughputAveWin; EDCHMACdFlowThroughputRelThr;

EDCHMACdFlowThroughputTimetoTrigger; ThresholdMaxEDPDCHSR; FactorEDCHMaxBitRate;

PeriodicityForSI; PowerOffsetForSI; StepSizeForDCHBLER; DCHSlopeOfTheCurve;

EDCHSlopeOfTheCurve; EDCHCTSwitchGuardTimer; DelayThresholdMin; DelayThresholdMid;

DelayThresholdMax; AMRLCRespTimeEDCH; AMRLCOnEDCHOfNRTPS; AMRLCMaximumBufferUE;

AMRLCRespTimeDCH (TTI 10 ms / 20 ms / 40 ms / HS-DSCH); AMRLCRespTimeFACHAndRACH;

AMRLCOnDCHOfNRTPS (Check all parameters); AMRLCOnDCHOfStream (Check all parameters);

AMRLCOnFACHOfPS (Check all parameters); AMRLCOnDCHOfSRB136 (Check all parameters);

AMRLCOnDCHOfSRB34 (Check all parameters); AMRLCOnFACHOfSRB (Check all parameters);

AMRLCTXWindowSizeSRB (Check all parameters); AMRLCOnHSDSCHOfNRTPS (Check all parameters);

AMRLCRespTimeHSDSCH (Check all parameters); ProbabilityFactorMax

Basic HSUPA and HSUPA 2 Mbps Feature Activation (ii)


Step:

Configure COCO (Only for IPA-RNC)

In the mcRNC, there is no specific Iub configuration for IP transport

Configure a COCO object with HSUPA-dedicated VCC. This applies only if the Path

Selection feature is not purchased.

For the AAL2 user plane link configuration, define the planned ATM interface id/VPI/

VCI values for the AAL2 user-plane VCCs, and the ATM interface id/VPI/VCI values

for the related AAL2 signalling link VCC

Set the value of the AAL2UPUsage COCO parameter to HSUPA to dedicate a VCC for

the E-DCH AAL2 connections. Check that HSDPA can be carried within the other

AAL2 VCCs configured for the BTS connections

The AAL2UPUsage parameter needs to have the same value in RNC and in BTS.

The UBR+ service class and the Path Selection features can be used to utilise the Iub

resources more effectively.

Configure AXC/FTM transport.

Configure AXC transport using AXC Element Manager.

Configure FTM transport using BTS Site Manager.

Basic HSUPA and HSUPA 2 Mbps Feature Activation (iii)


Step:

Configure WBTS

For the WBTS object, set the values of the following parameters. Default values can be

used initially.

MaxNumberEDCHLCG

HARQRVConfiguration

WinLCHSUPA

PrxTargetPSAdjustPeriod

RRMULDCHActivityFactor (Check all parameters)

Check also the parameter HSUPAXUsersEnabled and select the appropriate amount

of HSUPA users per BTS.

Configure WRAB.

For the WRAB object, check the values of the following parameter: Default value can be

used initially.

SIRDPCCHInitialDCH (Check all parameters)

Basic HSUPA and HSUPA 2 Mbps Feature Activation (iv)


Step:

Configure FMCS

Set the values for the FMCS parameters listed below. Using these parameters you can

adjust the sensitivity of the transfer from HS-DSCH to DCH. Default values can be used

initially.

Note that it is not necessary to create a new FMCS set for HSDPA; the same FMCS set as

for RT and NRT calls can also be used. The ID of the HSDPA FMCS set

(HspaFmcsIdentifier) can, for example, be the same as the ID of the RT or NRT FMCS set

(RtFmcsIdentifier or NrtFmcsIdentifier). It is not necessary either to create a new HSPA

FMCS / RT HSPA FMCS set for HSPA; the same FMCS set as for RT and NRT calls can also

be used. The ID of the HSPA or RT HSPA FMCS set (HSPAFmcsIdentifier or

RTHSPAFmcsIdentifier) can be the same as, for example, the ID of the RT or NRT FMCS

set (RTFmcsIdentifier or NRTFmcsIdentifier)

FMCS is needed if ADJS is defined for WCEL.

FMCS parameters:

EDCHRemEcNoOffset

EDCHAddEcNoOffset

Basic HSUPA and HSUPA 2 Mbps Feature Activation (v)


Step:

Configure WCEL

In the WCEL object modification operation, the WCEL must be locked before changing

the value of the HSUPAEnabled WCEL parameter to Enabled. If the WCEL parameter

PowerSaveHSPAType is set to HSPA0, HSUPA is not configured to WCEL until the

RAN955: Power saving mode for BTS feature makes the HSPA05 cells reconfiguration,

which is initiated by the RNC.

HSUPA must be activated at the same time in all the cells whose state is required to be

administratively unlocked, which use the same frequency (UARFCN) in this BTS.

In the object tree main window, lock the WCEL object you want to modify.

Set the values for the following parameters. Default values can be used initially.

PrxMaxTargetBTS; MaxNumberEDCHCel; NumberEDCHReservedSHOBranchAdditions;

EDCHMinimumSetETFCI; TargetNSEDCHToTotalEDCHPR; PrxLoadMarginEDCH;

OCULNRTDCHGrantedMinAllocT; SIRDPCCHOffsetEDPCH; PtxMaxEHICH; PtxOffsetEAGCH;

PtxOffsetERGCH; HSPAFmcsIdentifier; PrxTargetPSMin; PrxTargetPSMax;

PrxTargetPSStepDown; PrxTargetPSStepUp; PrxLoadMarginDCH; PrxLoadMarginMaxDCH

Basic HSUPA and HSUPA 2 Mbps Feature Activation (vi)


Step:

Set the value for the HSUPAEnabled WCEL parameter to Enabled. Set the value of

MaxTotalUplinkSymbolRate to 1920 for 1,44 Mbps and 3840 for 2 Mbps. (2 Mbps

requires an RNC licence.). This activates HSUPA functionality for the cell

Unlock the WCEL.

Expected outcome

The HSUPA feature is activated in the cell(s) of the RNC. The BTS informs the RNC

when HSUPA is active. The HSUPA state can be seen on the Operational EDCH state

WCEL parameter. The expected state is Enabled

Unexpected outcome

If something goes wrong when the RNC requests configuration or reconfiguration of

the HSDPA channels to the BTS, the following alarm is set: 7772 Physical shared

channel configuration failed

If the BTS informs that the Operational E-DCH state is Disabled, the following alarm

is set: 7780 HSUPA failure in WCEL

Basic HSUPA and HSUPA 2 Mbps Feature Activation (vii)


Transport Dependencies

ATM Transport Dependencies HSUPA traffic is mapped on a dedicated Iub VCC, allowing Iub capacity consumption

be optimized for NRT HSUPA traffic, while preserving the QoS of real-time services,

which are mapped on another VCC

Basic HSUPA bandwidth on Iub is similar to HSDPA approach

If 1.44Mbps is needed then an additional 30% is needed in Iub to attain this

throughput (1.44 x 1.30 = 1.872Mbps) on top of Rel99 and HSDPA

If 2Mbps is needed (2 x 1.3 = 2.6Mbps), 2.6Mbps is required in Iub on top of

Rel99and HSDPA

If shared VCC is used for DCH and HSDPA, dedicated VCC needed for HSUPA

If Path selection available

HSUPA VCC

HSPA VCC can be used for both HSDPA + HSUPA (HSUPA has higher AAL2 priority)


Overview :

72 simultaneous HSPA users (HSDPA and HSUPA)

per cell:

Support for high number of voice users over HSPA

Support of high number of always on users on

HSPA

Increased number of HSDPA and HSUPA DL

control channels

Objective:

High number of users with

efficient data throughput per user

Dynamic allocation of DL control

channels maximizes capacity for

HSDPA

HSPA users

16 32 48 64 80

RU20 RU10

24

48

64 72 72

DL/cell UL/BTS DL/cell UL/BTS DL/cell UL/cell

RAS06

60

HSPA 72 User per Cell Feature Description (i)


Summary:

This feature increases the number of simultaneous HSPA (HSDPA and HSUPA) users

to 72 per cell. Due to this increase, the number of DL HSDPA and HSUPA control

channels is increased. Additionally, dynamic allocation of the DL code space used by

these channels is enhanced


End user benefits

With this feature more users can be kept on HSPA, providing an instant access to

data services after momentary inactivity periods and thus improving the end user

experience

Operator benefits

The introduction of this feature creates pre-conditions for support for high number

of voice users

Requirement


HSPA 72 User per Cell Feature Description (ii)



This feature requires RAN1016/RAN1848: Flexi BTS Multimode System Module or

RAN1671: Enhanced Ultra Site Base Band (EUBB)


Functional description:

This feature allows 72 simultaneous HSPA (HSDPA & HSUPA) users per cell, both with

dedicated and shared scheduler. In order to be able to schedule and control increased

number of HSPA users in a cell, the number of HS-SCCH channels is increased to four.

On the other hand, as the DL code space is a scarce resource, a dynamic DL control

channel allocation mechanism is introduced to maximize the available codes for HS-

PDSCHs. E-HICH/E-RGCH codes are allocated dynamically, based on number of users.

In order to avoid fragmentation of the code space, the E-HICH/E-RGCH signatures are

actively reconfigured

HSPA 72 User per Cell Feature Description (iii)


System Impact:

Interdependency between Feature

RAN312: Dynamic Resource Allocation

RAN763: Basic HSDPA

RAN826: Basic HSUPA

RAN852: HSDPA 15 codes

RAN1464: HSDPA 64 Users per Cell

RAN1465: HSUPA 60 Users per BTS

Impact of Interfaces :

UU: Higher number of HSPA UEs/Cell - load and interference issues, higher ranges

of UE identifiers like E-RNTI and H-RNTI

Iub: Impact on transport

Management: new classes of HSPA distribution/duration counters

Impact on Parameters :

HSPA 72 User per Cell Feature Description (iv)


Activating HSPA 72 Users per Cell:

Before start Restart of the RNC and the WBTS is not required after activation of this feature. This feature belongs to application software and is under license key management. Make sure to have a valid license installed To set the feature state to ON, use the following command: for IPA-RNC:

ZW7M: FEA=1478:ON; for mcRNC:

set license feature-mgmt id 0000001478 feature-admin-state on RAN1686: HSPA 72 Users per Cell feature needs the following features to be activated before it can be enabled: HSDPA HSUPA RAN312: HSDPA Dynamic Resource Allocation RAN1464: HSDPA 64 Users per Cell RAN1465: HSUPA 60 Users per BTS

The value of the MaxNumberEDCHLCG parameter depends on the BTS HW. The value of MaxNbrOfHSSCCHCodes can be 4 only when the flexi release2 Hardware/EUBB is used

HSPA 72 User per Cell Feature Activation (i)


Step:

Open the OMS Element Manager Go to the Tree View Expand the topology tree of the RNC

Configure the RNFC object 1. Select Edit parameters from the RNFC object. 2. Under the Packet Scheduler tab, enable HSDPA dynamic resource allocation with

HSDPADynamicResourceAllocation (HSDPA Dynamic Resource Allocation) configuration parameter

Lock the cell Configure the WCEL object Select Edit parameters from the WCEL object Under the Admission Control tab, enable HSDPA with HSDPAEnabled (HSDPA

enabled) RNP parameter, and under the Packet Scheduler tab HSUPA with HSUPAEnabled (HSUPA enabled) RNP parameter

Under the Admission Control tab, enable the HSPA 72 users per cell feature with HSPA72UsersPerCell (HSPA 72 Users per Cell) management parameter

Unlock the cell Expected outcome Feature HSPA 72 Users per Cell has been activated

HSPA 72 User per Cell Feature Activation (ii)


HSUPA 5.8 Mbps and HSUPA 2ms TTI

Overview : HSUPA peak rate is increased up to 5.8Mbps/user

2ms TTI on the air interface and Iub

RTT is decreased 12-15 ms

HSUPA category Codes Data rate with

10 ms

Data rate with

2 ms

1 1 x SF4 0.71 Mbps -

2 2 x SF4 1.45 Mbps 1.45 Mbps

3 2 x SF4 1.45 Mbps -

4 2 x SF2 2 Mbps 2.9 Mbps

5 2 x SF2 2 Mbps -

6 2xSF2 + 2xSF4 2 Mbps 5.76 Mbps

7 2xSF2 + 2xSF4 2 Mbps 11.5 Mbps

Benefits:

Higher HSUPA peak rates up to 5.8 Mbps

Decreased Round Trip Time

3GPP

Release

Release 6

Release 6

Release 6

Release 6

Release 6

Release 6

Release 7


Summary:

This feature enables HSUPA 2ms TTI (Transmission Time Interval). It also maps the

SRBs (Signaling Radio Bearer) on HSUPA, if 2ms TTI is assigned to the UE. Mapping of

SRBs on UL E-DCH enables the use of 2xSF2 + 2xSF4 code in UE to support uplink

HSUPA bit rate up to 5.8Mbps


End user benefits

End-user experience is improved as a result of shorter UL transmission time

because of 2ms TTI on E-DCH.

Operator benefits

This feature is technically required for the RAN 981: HSUPA 5.8 Mbps. All bit rates

above 2 Mbps need TTI of 2ms on E-DCH. This feature introduces mapping of SRB

on HSUPA but only with E-TTI = 2ms

Requirement


HSUPA 2ms TTI Feature Description (i)



This feature requires RAN1016/RAN1848: Flexi BTS multimode System Module or

RAN1671: Enhanced UltraSite Base Band. In RNC196 and RNC450 HW upgrade is

needed according to feature RAN1226: HSPA Peak Rate Upgrade in RNC196 and

RNC450. Support of HSUPA 2ms TTI is possible only with new HW (CDSP-DH as

Feature Upgrade)



HSUPA 2ms TTI is used for UE categories 2, 4, 6 and 7 Shorter TTI improves average latency in radio interface by 12ms for the first transmission. Faster retransmissions also reduce variance of the Round Trip Time (RTT). Immediate data processing in Iub and the RNC user plane also shortens RTT. Mapping the SRBs to HSUPA enables spreading code allocation of 2xSF2 + 2xSF4 in uplink which is needed if 5.8 Mbps bitrate is used

HSUPA 2ms TTI Feature Description (ii)


System Impact:


This feature requires RAN826: Basic HSUPA


UU: Adaptation of RRC signaling to support 2 ms TTI and SRB on E-DCH

Iub: New set of Call Admission Control parameters related to SRB on E-DCH

Impact of Parameter :

HSUPA 2ms TTI Feature Description (iii)


Activating HSUPA 2ms TTI:

Before start

Restart of the RNC and the WBTS is not required after activation of this feature. This

feature belongs to application software and is under license key management. Make sure

to have a valid license installed

To set the feature state to ON, use the following command:

for IPA-RNC:

ZW7M: FEA=1475:ON;

for mcRNC:

set license feature-mgmt id 0000001475 feature-admin-state on

Note that the RAN1470: HSUPA 2 ms TTI feature can be activated only if HSDPA and

HSUPA are enabled in a cell and the BTS type is set as WBTS beforehand. With the ATM

Iub transport the AAL2 VCC configuration requires special emphasis once activating the

SRB HSPA services. See step 4 Check and modify the ATM Iub configuration (only for

IPA-RNC)

HSUPA 2ms TTI Feature Activation (i)


Step:

Open the OMS Element Manager Go to the Tree View Expand the topology tree of the RNC

Lock the cell Check and modify the ATM Iub configuration (only for IPA-RNC).

In order to have SRB HSPA services carried on top of the HSDPA/HSUPA channel type, the HSPA traffic type has to be added to AAL2 VCC containing the Stringent path type in the COCO object.

Note that before modifying the COCO object, all cells under the BTS must be locked. The following AAL2 VCC combinations are recommended (the license for the RAN759: Path Selection feature is required): Combination 1: DCH & HSPA Stringent DCH & HSPA Stringent bi-level HSPA Tolerant

Combination 2: DCH & HSPA Stringent & Stringent bi-level HSPA Tolerant

Note that ATM part is IPA-RNC specific. There is no special handling in transport area for mcRNC.

HSUPA 2ms TTI Feature Activation (ii)


Step:

In the WCEL object under the Admission Control tab, enable HSDPAenabled (HSDPA

enabled) parameter and under the Packet Scheduler tab, HSUPAenabled (HSUPA

enabled) parameter.

Under the Identification tab, define the WBTS object type using the NBAPCommMode

(NBAP Communication Mode) parameter.

In the WCEL object under the Admission Control tab, enable the

HSUPA2MSTTIEnabled (HSUPA 2 ms TTI enabled) parameter.

Unlock the WCEL object.

Expected outcome

RAN1470: HSUPA 2 ms TTI feature has been activated

HSUPA 2ms TTI Feature Activation (iii)


Summary:

The peak bit rate on E-DCH for a single user is increased up to 5.8 Mbps. It fully

supports a Cat 6/7 UE to reach its peak bit rate of about 5.8 Mbps on E-DCH:

It supports the reception of four codes in parallel

2xSF2 and 2xSF4 on E-DCH are supported


End user benefits

The end-user experiences are higher HSUPA bit rates

Operator benefits

This feature enables operator to offer higher HSUPA bit rates to premium data

subscribers and increase data service revenue

Requirement


HSUPA 5.8 Mbps Feature Description (i)



This feature requires RAN1016/RAN1848: Flexi BTS Multimode System Module or

RAN1671: Enhanced UltraSite Base Band. In RNC196 and RNC450 HW upgrade is

needed according to feature RAN1226: HSPA Peak Rate Upgrade in RNC196 and

RNC450. Support of HSUPA 2 ms TTI is provided only with new HW (CDSP-DH).



HSUPA UE categories 4, 6 and 7 support higher peak bit rate than 2 Mbps. With this feature, category 4, 6 and 7 UEs may transmit data with their maximum bit rate, which is achieved with an E-DCH configuration of 2 ms transmission time interval (TTI). Four parallel codes are required for category 6 and 7. When four codes are transmitted in parallel, two codes are transmitted with spreading factor two (2xSF2) and two with spreading factor four (2xSF4). Also intermediate bit rates are supported with 2 ms TTI. The maximum theoretical throughput of category 6 and 7 terminal is 5.76 Mbps. Practical throughput achievable with this feature is limited by radio

HSUPA 5.8 Mbps Feature Description (ii)


reception and allowed noise rise: Maximum theoretical throughput would require the use of coding rate close to 1. Coding rate 1 requires effectively error free reception without error correction coding. Targeting error free reception reduces the system efficiency and capacity. In all practical conditions the throughput will be degraded if using coding rates close to 1. Quality of radio reception depends on aspects such as received signal strength, radio channel and interference, transmitter and receiver imperfections.

System Impact:


This feature requires RAN1470: HSUPA 2 ms TTI


UU: Adaptation of RRC signaling to support 2 ms TTI and SRB on E-DCH

Iub: New set of Call Admission Control parameters related to SRB on E-DCH

Impact of Parameter :

HSUPA 5.8 Mbps Feature Description (iii)


Activating HSUPA 5.8 Mbps:

Before start

Restart of the RNC and the WBTS is not required after activation of this feature. For

more information on licensing

To set the feature state to ON, use the following command:

for IPA-RNC:

ZW7M: FEA=1086:ON;

for mcRNC:

set license feature-mgmt id 0000001086 feature-admin-state on

Note that the RAN981: HSUPA 5.8 Mbps feature can be activated only if the RAN1470:

HSUPA 2 ms TTI feature is enabled in a cell.

Note that with the current default value of the WCEL PrxMaxTargetBTS parameter,

the maximum UL bit rate may not be reached. Therefore, it is advised to increase the

value of the PrxMaxTargetBTS parameter

HSUPA 5.8 Mbps Feature Activation (i)


Step:

Open the OMS Element Manager

Go to the Tree View

Expand the topology tree of the RNC

Lock the cell

In the WCEL object under the Admission Control tab, enable HSDPAenabled (HSDPA

enabled) parameter and under the Packet Scheduler tab, HSUPAenabled (HSUPA

enabled) parameter

Under the Identification tab, define the WBTS object type using the NBAPCommMode

(NBAP Communication Mode) parameter

In the WCEL object under the Admission Control tab, enable the

HSUPA2MSTTIEnabled (HSUPA 2 ms TTI enabled) parameter

Under the Packet Scheduler tab, set the WCEL MaxTotalUplinkSymbolRate (Maximum

total uplink symbol rate) parameter to maximum 5760 kbps (2*SF2+2*SF4).

Unlock the WCEL object

Expected outcome

RAN981: HSUPA 5.8 Mbps feature has been activated

HSUPA 5.8 Mbps Feature Activation (ii)


Thank You

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