Interference Cancellation Feature

7/18/2019 Interference Cancellation Feature

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WCDMA RAN

Interference Cancellation Feature Parameter Description

Issue 02

Date 2013-09-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved.

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Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

erence Cancellation Feature Parameter Description http://localhost:7891/pages/GEC0815J/02/GEC0815J/02/resourc

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Website: http://www.huawei.com

Email: [email protected]

Contents

1 About This Document

1.1 Scope

1.2 Intended Audience1.3 Change History

2 Overview

2.1 Introduction

2.2 Benefits

2.2.1 CCPIC

2.2.2 CCPIC (Phase 2)

2.2.3 HSUPA UL IC

2.2.4 Turbo IC

3 Background Information

3.1 Multiuser Detection

3.2 Interference Cancellation

3.2.1 Demodulation-based IC and Decoding-based IC

3.2.2 Parallel and Successive Interference Cancellation4 Huawei Interference Cancellation Techniques

4.1 Introduction

4.1.1 Channel Types

4.1.2 Inter-board IC and Intra-board IC

4.2 DPCCH IC

4.2.1 CCPIC


4.3 E-DPDCH IC

4.3.1 HSUPA UL IC

4.3.2 Turbo IC

4.4 Types of Base Stations and Boards Supporting IC

4.4.1 Types of Base Stations and Boards Supporting DPCCH IC

4.4.2 Types of Base Stations and Boards Supporting E-DPDCH IC

5 Related Features

5.1 WRFD-010210 Control Channel Parallel Interference Cancellation (CCPIC)

5.2 WRFD-140202 Control Channel Parallel Interference Cancellation (Phase 2)

5.3 WRFD-010691 HSUPA UL Interference Cancellation

5.4 WRFD-150206 Turbo IC

6 Network Impact





7 Engineering Guidelines


7.1.1 When to Use Control Channel Parallel Interference Cancellation (CCPIC)

7.1.2 Information to Be Collected

7.1.3 Deployment

7.1.3.1 Requirements

7.1.3.2 Data Preparation

7.1.3.3 Activation

7.1.3.4 Activation Observation

7.1.3.5 Deactivation

7.1.4 Performance Monitoring

7.1.5 Parameter Optimization

7.1.6 Troubleshooting


7.2.1 When to Use Control Channel Parallel Interference Cancellation (Phase 2)



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7.2.3 Deployment



7.2.3.3 Activation







7.3.1 When to Use HSUPA UL Interference Cancellation


7.3.3 Deployment



7.3.3.3 Activation







7.4.1 When to Use Turbo IC


7.4.3 Deployment



7.4.3.3 Activation






8 Parameters

9 Counters

10 Glossary

11 Reference Documents1 About This Document

1.1 Scope

This document describes interference cancellation (IC), including its technical principles, related features, network impact, and engineering guidelines.

This document covers the following features:

WRFD-010210 Control Channel Parallel Interference Cancellation (CCPIC)

WRFD-140202 Control Channel Parallel Interference Cancellation (Phase 2)

WRFD-010691 HSUPA UL Interference Cancellation

WRFD-150206 Turbo IC

1.2 Intended Audience

This document is intended for personnel who:

Need to understand the features described herein

Work with Huawei products

1.3 Change History

This section provides information about the changes in different document versions. There are two types of changes, which are defined as follows:

Feature change

Changes in features of a specific product version

Editorial change

Changes in wording or addition of information that was not described in the earlier version

01 (2013-09-30)

This issue does not include any changes.


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Draft A (2013-07-30)

Compared with issue Issue 01 (2013-04-28) of RAN15.0, Draft A (2013-07-30) of RAN15.1 includes the following changes.

Change Type Change Description Parameter Change

Feature change Added descriptions about interference cancellation performed on coordinated l inks to section

4.1.1 Channel Types.

None

Optimized the steps for activating CCPIC (Phase 2) in section 7.2.3 Deployment.

Editorial change For the 3900 series base stations, the BTS3902E, and the BTS3803E, changed the fol lowing

MML command names:

MOD LOCELL has been changed to MOD ULOCELL.

SET RESALLOCRULE has been changed to SET NODEBRESALLOCRULE.

For details, see section 7.3.3 Deployment.

Changed the parameter ID name

from IC_MODE to ICMODE .

Added descriptions about whether the BTS3803E and BTS3902E support Interference

Cancellation in hardware dependency descriptions.

None

2 Overview

2.1 Introduction

Wideband Code Division Multiple Access (WCDMA) is a self-interference system. The capacity and performance of the system are limited by inter-user interference

(also known as multiple access interference or MAI), especially near-far interference. Near-far interference is signal interference that occurs when a desirable signal

from a far-away user is interfered by the signals from another user close to the intended receiver.

Multiuser detection (MUD), also known as joint detection, is a receiver technique to detect desired signals from interference and noise. MUD can minimize MAI,

intersymbol interference (ISI), and near-far interference, thereby improving system capacity and performance.

IC is one type of MUD. Huawei introduces the following four IC techniques:

Control Channel Parallel Interference Cancellation (CCPIC)

CCPIC is used for the Dedicated Physical Control Channel (DPCCH) and corresponds to the WRFD-010210 Control Channel Parallel Interference

Cancellation (CCPIC) feature.

CCPIC (Phase 2)

CCPIC (Phase 2) is also used for the DPCCH and corresponds to the WRFD-140202 Control Channel Parallel Interference Cancellation (Phase 2) feature.

High Speed Uplink Packet Access (HSUPA) UL IC

HSUPA UL IC is used for the E-DCH Dedicated Physical Control Channel (E-DPDCH) and corresponds to the WRFD-010691 HSUPA UL Interference

Cancellation feature.

Turbo IC

Turbo IC is also used for the E-DPDCH.

2.2 Benefits

IC estimates the MAI by signal detection and regeneration and cancels some or all interference before the final demodulation and decoding. This increases the uplinksystem capacity.

The following sections describe the benefits provided by different IC techniques.

2.2.1 CCPIC

Each UE is allocated a standalone DPCCH. Uplink interference from this channel reduces the uplink system capacity.

CCPIC cancels interference from the DPCCH, thereby reducing the interference from this DPCCH on other channels and increasing the uplink system capacity. The

gains are obvious when the uplink DPCCH uses a large proportion of the received total wideband power (RTWP) in the cell. For example, the gains are obvious when

a large number of UEs camp on the cell and the uplink throughput is low.


As an enhancement to CCPIC, CCPIC (Phase 2) improves CCPIC efficiency and extends the range in which CCPIC can take effect, thereby significantly increasing

the uplink system capacity. The gains are obvious when the uplink DPCCH uses a large proportion of the RTWP in the cell. For example, the gains are obvious when a

large number of UEs camp on the cell and the uplink throughput is low.

2.2.3 HSUPA UL IC

HSUPA UL IC cancels interference from the E-DPDCH and reduces the MAI, thereby improving demodulation performance and increasing the uplink system capacity.

2.2.4 Turbo IC

Turbo IC improves E-DPDCH IC efficiency for HSUPA 2 ms TTI UEs, thereby reducing interference between UEs and significantly increasing the uplink system

capacity.

3 Background Information

This section provides background information about the IC feature. It covers MUD, parallel interface cancellation (PIC), and successive interface cancellation (SIC).

3.1 Multiuser Detection

In single-user scenarios, noise consists of N0, ISI, and external interference, including that from neighboring cells.

In multi-user scenarios, interference between UEs is also considered noise. This type of interference is called multi-user interference (MUI) or MAI.

Table 3-1 describes the noise types.


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Table 3-1 Noise types

Noise Type Description

N0 N0 indicates background noise, which is also called noise floor. It is caused by the thermal motion of electrons in internal

components and its strength depends on the receiver bandwidth and ambient temperature.

ISI Intersymbol interference (ISI) is a form of waveform distortion and multipath spread of consecutive symbols. ISI is usually

caused by multipath propagation.

MAI Multiple access interference (MAI) indicates interference between UEs, which is caused by the multiple-access

technique. In a CDMA system, UEs are identified by their scrambling codes in the uplink. However, scrambling codes are

not completely orthogonal. Therefore, there is MAI between uplink UEs.

The conventional detection technique uses a matched filter to despread received signals and makes a decision on the filter output. The receiver does not consider MAI

or use transmission information of other UEs for a joint detection.

The MUD technique enables the receiver to detect signals from a UE by considering the MAI from all other UEs. This increases the system's anti-interference

capabilities, effectively utilizes uplink spectrum resources, and greatly increases system capacity. IC is a first-choice MUD technique for the third-generation mobile

communications system. It can improve receiver performance and leave room for further expansion.

3.2 Interference Cancellation

IC estimates the MAI by signal detection and regeneration and cancels some or all interference before the final demodulation and decoding.

IC can be categorized in the following ways:

IC is categorized into demodulation-based IC and decoding-based IC based on whether regeneration and cancellation are performed after demodulation or

decoding.

IC is categorized into parallel interference cancellation (PIC) and successive interference cancellation (SIC) based on whether IC is performed in parallel or

in succession.

3.2.1 Demodulation-based IC and Decoding-based IC

Demodulation-based IC

Demodulation-based IC implements regeneration and cancellation on demodulated signals for a UE before decoding. This minimizes interference to other

UEs and improves demodulation performance. Figure 3-1 illustrates demodulation-based IC.

Figure 3-1 Demodulation-based IC

As shown in Figure 3-1, demodulation-based IC involves the following operations:

Demodulation: Upon receiving signals from UEs, the NodeB demodulation module demodulates signals of different UEs or signals on different channels

based on information such as finger delays and the channel estimation result.

Decoding: Upon receiving the demodulated signals of a UE, the NodeB decoding module retrieves the primitive information of the UE.

Regeneration: The NodeB regeneration module estimates and regenerates the primitive signals of the UE or on the channel based on information such as

the demodulation/decoding result, channel estimation result, and multipath conditions.

Cancellation: The NodeB cancellation module removes the regenerated signals of the UE from the received signals to cancel any interference to other UEs

or channels.

Decoding-based IC

Decoding-based IC implements regeneration and cancellation on decoded signals for a UE. This minimizes interference to other UEs and improves

demodulation performance. Figure 3-2 illustrates decoding-based IC.

Figure 3-2 Decoding-based IC


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3.2.2 Parallel and Successive Interference Cancellation

Parallel Interference Cancellation

With PIC, the NodeB performs detection, regeneration, and cancellation of signals of multiple UEs in parallel. PIC can be implemented in multiple stages to further

improve performance. Figure 3-3 illustrates two-stage PIC.

Figure 3-3 Two-stage PIC

As illustrated in Figure 3-3, PIC in each stage involves three operations: detection, regeneration, and cancellation. Upon receiving signals, the NodeB detection module

detects signals for different UEs by demodulation or by demodulation and decoding. After implementing first-stage and second-stage PIC, the NodeB demodulates anddecodes the signals where PIC is performed to obtain the decoded signals of UEs.

Successive Interference Cancellation

With SIC, the NodeB performs detection and regeneration on signals of only one UE at a time. The NodeB removes the regenerated signals of a UE before detecting

the next UE to reduce the MAI from this UE on subsequent UEs. SIC can be implemented in multiple stages to further improve performance. Figure 3-4 illustrates

two-stage SIC.

Figure 3-4 Two-stage SIC


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4 Huawei Interference Cancellation Techniques

4.1 Introduction

This section describes the Huawei interference cancellation techniques DPCCH IC and E-DPDCH IC.

4.1.1 Channel Types

In WCDMA, the physical channels DPCCH and DPDCH are introduced to the uplink to support basic R99 circuit switched (CS) and packet switched (PS) services. The

E-DPCCH and E-DPDCH are added as uplink physical channels to support HSUPA, which is introduced in 3GPP Release 6 to meet requirements for uplink data

transmission. Figure 4-1 shows channels used when an R99 UE and an HSUPA-capable UE are processing an R99 and HSUPA service, respectively.

Figure 4-1 Channels for R99 and HSUPA services

DPCCH: Dedicated Physical Control Channel

DPDCH: Dedicated Physical Data Channel

E-AGCH: E-DCH Absolute Grant Channel

E-DPCCH: E-DCH Dedicated Physical Control Channel

E-DPDCH: E-DCH Dedicated Physical Data Channel

E-HICH: E-DCH HARQ Acknowledgement Indicator Channel

E-RGCH: E-DCH Relative Grant Channel

CCPIC and CCPIC (Phase 2) take effect on Tthe DPCCH uses CCPIC and CCPIC (Phase 2), and HSUPA UL IC and Turbo IC take effect on the E-DPDCH uses

HSUPA UL IC and Turbo IC, as shown in the following figure.


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When the WRFD-151205 Uplink CoMP (Joint Reception) and WRFD-151206 HetNet Uplink CoMP(Joint Reception) features are activated, IC also takes effect on

DPCCHs and E-DPDCHs carrying coordinated links. The implementation and gains of IC on these DPCCHs and E-DPDCHs are the same as those on ordinary

DPCCHs and E-DPDCHs.

With IC available to these particular DPCCHs and E-DPDCHs, the uplink interference of UEs using coordinated links to other UEs in the same cell is reduced and

uplink cell capacity is expanded.

For details about the WRFD-151205 Uplink CoMP (Joint Reception) and WRFD-151206 HetNet Uplink CoMP(Joint Reception) features, see Uplink CoMP Feature

Parameter Description.

As shown in the following figure, ordinary and particular DPCCHs use CCPIC and CCPIC (Phase 2), and ordinary and particular E-DPDCHs use HSUPA UL IC and

Turbo IC.

4.1.2 Inter-board IC and Intra-board IC

Introduction

With the introduction of the IC feature, boards can be classified into two types: IC capable and IC incapable. If one or more IC-capable boards and one or more

IC-incapable boards form an uplink resource group, a UE in a cell may be carried on any of these boards. UEs carried on IC-capable boards can participate in IC but

UEs carried on IC-incapable boards cannot. Consequently, signals of the UEs carried on IC-capable boards undergo detection, regeneration, and cancellation toreduce interference to other UEs but signals of the UEs carried on IC-incapable boards do not.

If the IC provided by an IC-capable board can take effect only on UEs carried on the board, it is called intra-board IC.

If the IC can also take effect on UEs carried on other boards, it is called inter-board IC.

As integrated base stations, the BTS3803E and BTS3902E do not use inter-board IC.

Inter-board IC

If there are multiple IC-capable boards in an uplink resource group under a NodeB, IC benefits can be shared by all the boards in the group, regardless of whether the

boards are IC-capable. Therefore, interference from other UEs can be canceled from the signals of UEs that are carried on IC-incapable boards before the signals are

demodulated. This also improves the demodulation performance of the UEs carried on IC-incapable boards.

Figure 4-2 illustrates how inter-board IC functions.

Figure 4-2 Working principles for inter-board IC

ASIC: application-specific integrated circuit

As illustrated in Figure 4-2, inter-board IC functions as follows:

IC-capable boards consisting of non-centralized IC boards and a centralized IC board perform detection and regeneration on signals of UEs carried on

them and send the regenerated signals to the centralized IC module on the centralized IC board.

1.

The centralized IC module centrally cancels interference. It adds up the regenerated signals of all UEs carried on the IC-capable boards, removes the sum

from the received signals, and sends the remaining signals to all the boards, including IC-incapable boards, in the same uplink resource group.

2.

All boards perform demodulation and decoding using the remaining signals.3.

Intra-board IC

Intra-board IC is a type of interference cancellation whose benefits are shared only within an IC-capable board. Intra-board IC cannot benefit UEs carried on other


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boards, regardless of whether they are IC-capable. Assume that IC-capable boards 1 and 2 and IC-incapable board 3 form an uplink resource group and intra-board IC

is applied. IC gains from board 1 benefit only UEs carried on board 1. Similarly, IC gains from board 2 benefit only UEs carried on board 2. Interference between UEs

carried on IC-incapable board 3 cannot be canceled.

4.2 DPCCH IC

Each UE is allocated a standalone DPCCH. Uplink interference from this channel reduces the uplink system capacity.

CCPIC cancels interference from the DPCCH, thereby reducing the interference from this DPCCH on other channels and increasing the uplink system capacity. The

gains are obvious when the uplink DPCCH uses a large proportion of the RTWP in the cell. For example, the gains are obvious when a large number of UEs camp on

the cell and the uplink throughput is low.

DPCCH IC includes CCPIC and CCPIC (Phase 2).

4.2.1 CCPICCCPIC is implemented as follows:

The NodeB detection module demodulates and decodes received DPCCH signals.1.

The NodeB regeneration module regenerates signals of UEs on their respective DPCCHs by using information such as the detection result and the

channel estimation result.

2.

The NodeB cancellation module performs cancellation on the regenerated DPCCH signals by removing the regenerated DPCCH signals of all UEs carried

on the same CCPIC-capable board from the total received signals.

3.

After the interference from the DPCCH is canceled, the DPDCH and E-DPDCH are demodulated. This reduces interference from the DPCCH to other channels,

thereby improving demodulation performance of the other channels.

CCPIC only supports intra-board IC.


CCPIC (Phase 2) introduces the advanced regeneration cancellation algorithm, which makes DPCCH regeneration more accurate and as a result improves CCPIC

efficiency.

In addition, this feature allows inter-board IC. With this feature, the regenerated DPCCH signals of all UEs carried on all CCPIC-capable boards, rather than a single

board, are removed from the total received signals. After the interference from the DPCCH is canceled, the DPDCH and E-DPDCH are demodulated. When multiple

baseband boards form an uplink resource group, the CCPIC gains of UEs carried on one board benefit UEs carried on other boards.

This feature significantly increases the uplink system capacity. When the uplink DPCCH uses a large proportion of RTWP in a cell, this feature increases the uplink

system capacity by up to 20% compared to CCPIC. This gain is possible when, for example, the uplink throughput is low but there are a large number of UEs in the

cell.

4.3 E-DPDCH IC

With the continuous increase of the HSUPA rate, uplink interference increases, thereby imposing a great impact on the uplink system capacity. E-DPDCH IC increases

the uplink system capacity by canceling interference from the E-DPDCH.

E-DPDCH IC corresponds to the following features:


WRFD-150206 Turbo IC

4.3.1 HSUPA UL IC

E-DPDCH IC now implements one-stage PIC on the WBBPd board and the BTS3902E and one-stage SIC on the WBBPf board and the BTS3803E.

One-stage PIC functions as follows:

The NodeB detection module detects E-DPDCH signals for HSUPA UEs.1.

The NodeB regeneration module regenerates signals of UEs on their respective E-DPDCHs by using the detection result and channel estimation result.2.

The NodeB cancellation module removes the regenerated signals from the received signals.3.

The NodeB demodulation and decoding module demodulates and decodes the baseband signals with interference canceled.4.

Note that the demodulation performance is improved because MAI is reduced by canceling interference from the E-DPDCH.

One-stage SIC functions as follows:

The NodeB detects (demodulates) and regenerates signals of one UE at a time. Before processing signals from another UE, the NodeB removes the regenerated

signals of the current UE to minimize the MAI to other UEs and improve the demodulation performance.

4.3.2 Turbo IC

Turbo IC implements decoding-based SIC in multiple stages on the E-DPDCH signals of HSUPA 2 ms TTI UEs. Turbo IC functions as follows:

The NodeB detection module demodulates and decodes the E-DPDCH signals for an HSUPA UE.1.

The NodeB regeneration module regenerates the E-DPDCH signals of the HSUPA UE based on information such as the detection result and channel

estimation result.

2.

The NodeB cancellation module removes the regenerated E-DPDCH signals of the HSUPA UE from the signals received before detection.3.

The NodeB detection module processes the signals of another HSUPA UE.4.

Turbo IC reduces the MAI and improves demodulation performance by removing E-DPDCH signal interference from the baseband data.

4.4 Types of Base Stations and Boards Supporting IC

4.4.1 Types of Base Stations and Boards Supporting DPCCH IC

The following types of base stations support DPCCH IC:

3800 series base stations


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3800 series base stations support DPCCH IC only when configured with the EBBC or EBBCd board.

3800 series base stations do not support inter-board DPCCH IC.

BTS3812E and BTS3812AE

The BTS3812E and BTS3812AE support DPCCH IC only when configured with the EBBI, EBOI, EULP, or EULPd board.

The BTS3812E and BTS3812AE do not support inter-board DPCCH IC.


3900 series base stations support DPCCH IC only when configured with the WBBPb, WBBPd, or WBBPf board.

3900 series base stations support inter-board DPCCH IC. However, INTERBOARDICSW must be set to FULL_IC for a WBBPa or WBBPb board to benefit

from IC gains of a WBBPd or WBBPf board in the same uplink resource group.

NOTE:

Inter-board DPCCH IC is supported only when one centralized IC board is configured in slot 2 or 3. Only the WBBPd and WBBPf boards can serve as a

centralized IC board.Although the WBBPb board supports DPCCH IC, it does not send its regenerated signals to the centralized IC board for centralized IC.

Instead, the WBBPb board cancels interference by itself. As a result, the CCPIC gains for UEs carried on a WBBPb board do not benefit UEs carried on

other boards, including other WBBPb boards.

The BTS3803E and BTS3902E support DPCCH IC.

4.4.2 Types of Base Stations and Boards Supporting E-DPDCH IC

The following types of base stations support E-DPDCH IC:


3800 series base stations support demodulation-based E-DPDCH IC only when configured with the EBBCd board.

3800 series base stations do not support decoding-based E-DPDCH IC.

3800 series base stations support inter-board E-DPDCH IC. If two EBBCd boards are configured, do not enable inter-board IC for both boards. Otherwise,

only one of the EBBCd boards can support E-DPDCH IC.

BTS3812E and BTS3812AE

The BTS3812E and BTS3812AE support demodulation-based E-DPDCH IC only when configured with the EULPd board but do not support inter-board

demodulation-based E-DPDCH IC. The BTS3812E and BTS3812AE do not support decoding-based E-DPDCH IC.


3900 series base stations support demodulation-based E-DPDCH IC only when configured with the WBBPd or WBBPf board.

3900 series base stations support decoding-based E-DPDCH IC only when configured with the WBBPf board.

An uplink resource group must contain WBBPd or WBBPf boards. If a WBBPd or WBBPf coexists with a WBBPb in a downlink resource group, downlink

processing units are preferentially allocated to the WBBPd or WBBPf to obtain more IC gains. To enable allocation of downlink processing units to the

WBBPb, the downlink resource group must be split.

3900 series base stations support inter-board E-DPDCH IC. Whether the WBBPa or WBBPb board can benefit from other boards depends on the setting of

the INTERBOARDICSW parameter.

NOTE:

Inter-board E-DPDCH IC is supported only when one centralized IC board is configured in slot 2 or 3. Only the WBBPd and WBBPf boards can serve as a

centralized IC board.

Gains from centralized Turbo IC can be shared across boards only when the following conditions are met:

Turbo IC is enabled.

Inter-board IC is supported.

All boards in the uplink resource group are configured as WBBPf boards.

Otherwise, only gains from demodulation-based IC can be shared across boards.

The BTS3803E supports E-DPDCH IC.

The BTS3902E supports demodulation-based E-DPDCH IC, not decoding-based E-DPDCH IC.

5 Related Features


Prerequisite Features

None

Mutually Exclusive Features

None

Impacted Features

WRFD-010712 Adaptive Configuration of Traffic Channel Power offset for HSUPA

When CCPIC is enabled, gains from Adaptive Configuration of Traffic Channel Power offset for HSUPA and HSUPA Adaptive Retransmission decrease.

Likewise, when Adaptive Configuration of Traffic Channel Power offset for HSUPA or HSUPA Adaptive Retransmission is enabled, gains from CCPIC

decrease. This is because CCPIC increase system capacity by canceling interference from the DPCCH while Adaptive Configuration of Traffic Channel

Power offset for HSUPA and HSUPA Adaptive Retransmission reduce the DPCCH power and therefore leave less interference from the DPCCH to be

canceled.

For a detailed descri tion of Ada tive Confi uration of Traffic Channel Power offset for HSUPA, see Power Control Feature Parameter Descri tion.


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WRFD-010641 HSUPA Adaptive Retransmission

System throughput is always greater when CCPIC is enabled together with Adaptive Configuration of Traffic Channel Power offset for HSUPA or HSUPA

Adaptive Retransmission, as compared with when CCPIC is not enabled together with Adaptive Configuration of Traffic Channel Power offset for HSUPA or

HSUPA Adaptive Retransmission or none of the features is enabled.

For a detailed description of HSUPA Adaptive Retransmission, see HSUPA Feature Parameter Description.



WRFD-010210 Control Channel Parallel Interference Cancellation (CCPIC)


None

Impacted Features

The impacted features of CCPIC(Phase 2) is the same as CCPIC. For details, see section Impacted Features.



WRFD-010612 HSUPA Introduction Package


None

Impacted Features

WRFD-010641 HSUPA Adaptive Retransmission

Gains from HSUPA UL Interference Cancellation significantly decrease when it is enabled together with HSUPA Adaptive Retransmission (with UEs in the

large retransmission state). This is because a larger retransmission proportion causes E-DPDCH IC to be less efficient.

WRFD-150222 HSUPA Time Division Scheduling

HSUPA UL Interference Cancellation affect the HSUPA Time Division Scheduling feature. When HSUPA UL Interference Cancellation is enabled, gains

from the HSUPA Time Division Scheduling feature decrease. Likewise, when the HSUPA Time Division Scheduling feature is enabled, gains from HSUPA

UL Interference Cancellation decrease.

This is because HSUPA UL Interference Cancellation improve demodulation performance by canceling MUI while the HSUPA Time Division Scheduling

feature prevents MUI wherever possible by enabling signals of UEs to be transmitted during different time divisions. When there is less MUI or multipath

interference to be canceled, there are fewer gains from HSUPA UL Interference Cancellation.

For a detailed description of HSUPA Time Division Scheduling, see HSUPA Time Division Scheduling Feature Parameter Description.



WRFD-01061403 HSUPA 2ms TTI



None

Impacted Features

WRFD-150222 HSUPA Time Division Scheduling

Turbo IC affect the HSUPA Time Division Scheduling feature. When Turbo IC is enabled, gains from the HSUPA Time Division Scheduling feature

decrease. Likewise, when the HSUPA Time Division Scheduling feature is enabled, gains from Turbo IC decrease.

This is because Turbo IC improve demodulation performance by canceling MUI while the HSUPA Time Division Scheduling feature prevents MUI wherever

possible by enabling signals of UEs to be transmitted during different time divisions. When there is less MUI or multipath interference to be canceled, there

are fewer gains from Turbo IC.

For a detailed description of HSUPA Time Division Scheduling, see HSUPA Time Division Scheduling Feature Parameter Description.

6 Network Impact


System Capacity

CCPIC noticeably increases the uplink cell capacity and enables CCPIC-capable UEs to benefit from each other when the uplink DPCCH uses a large proportion of

RTWP in a cell (for example, when a large number of UEs camp on the cell but the uplink throughput is low) and a small number of boards are configured in the uplink

resource group that serves the cell.

CCPIC increases the uplink cell capacity for macro cells in urban areas that are configured with the TU3 channel and serves only AMR 12.2 kbit/s UEs in the uplink.

If the uplink Uu-interface load threshold for the cell is 50%, the uplink cell capacity increases by 11%.

If the threshold is 75%, the uplink cell capacity increases by 18%.


31 7/8/2015



Network Performance

None


System Capacity

CCPIC (Phase 2) significantly increases the uplink system capacity by improving CCPIC efficiency and extending the range in which CCPIC can take effect. CCPIC

(Phase 2) can increase the uplink system capacity by up to 20% when the uplink DPCCH uses a large proportion of RTWP in a cell, for example, when the uplink

throughput is low but a large number of UEs camp on the cell. Gains provided by CCPIC (Phase 2) decrease if the uplink DPCCH uses a smaller proportion of RTWP.

Network Performance

You are advised to replace the WBBPa or WBBPb board with a WBBPd or WBBPf board to maximize the gains provided by CCPIC (Phase 2). The reason is as

follows:

Assume that a WBBPa or WBBPb board and a WBBPd or WBBPf board form an uplink resource group. When the INTERBOARDICSW parameter is set to FULL_IC

for a WBBPa or WBBPb board to benefit from CCPIC (Phase 2) gains provided by a WBBPd or WBBPf board, UEs whose data channels are carried on the WBBPa or

WBBPb board must set up DPCCHs on the WBBPd or WBBPf board for power control purposes. In addition, UEs whose downlink services are carried on HSDPA

channels must set up another HS-DPCCH on the WBBPd or WBBPf board. The new channels consume extra resources, which reduces the total number of users

supported by the system and decreases the access success rate.

If the replacement is not performed, you are advised to set the INTERBOARDICSW parameter to PART_IC.


System Capacity

HSUPA UL IC regenerates demodulated E-DPDCH signals for HSUPA UEs and cancels interference from the regenerated signals. This feature therefore reduces the

MAI, improves demodulation performance, and increases the uplink system capacity. When a small number of HSUPA UEs camp on the target cell, the uplink system

capacity increases by 20% to 50%.

Network Performance

You are advised to replace the WBBPa or WBBPb board with a WBBPd or WBBPf board to maximize the gains provided by HSUPA UL IC. The reason is as follows:

Assume that a WBBPa or WBBPb board and a WBBPd or WBBPf board form an uplink resource group. When the INTERBOARDICSW parameter is set to FULL_IC

for a WBBPa or WBBPb board to benefit from HSUPA UL IC gains provided by a WBBPd or WBBPf board, UEs whose data channels are carried on the WBBPa or

WBBPb board must set up DPCCHs on the WBBPd or WBBPf board for power control purposes. In addition, UEs whose downlink services are carried on HSDPA

channels must set up another HS-DPCCH on the WBBPd or WBBPf board. The new channels consume extra resources, which reduces the total number of users

supported by the system and decreases the access success rate.



System Capacity

Turbo IC increases the uplink system capacity by improving E-DPDCH IC efficiency for HSUPA 2 ms TTI UEs. Gains from Turbo IC are noticeable when HSUPA 2 ms

TTI UEs with continuous data transmission account for a large proportion of UEs in a cell or when HSUPA 2 ms TTI UEs with high throughput exist in a cell. In either of

these cases, Turbo IC further increases the uplink system capacity compared with the gains from HSUPA UL Interference Cancellation. When the Independent

Demodulation of Signals from Multiple RRUs in One Cell feature is used, gains from Turbo IC are noticeable only if all UEs and services in each area covered by the

RRUs are in either of the preceding cases.

Gains from Turbo IC depend on the scenario. There are two types of typical scenarios:

WBBPf boards form an uplink resource group.

In scenarios where there are four full buffer HSUPA 2 ms TTI UEs, the uplink cell throughput increases by 30% to 70% after Turbo IC is

activated; Turbo IC increases the uplink cell throughput by 10% to 30% compared with HSUPA UL Interference Cancellation. Full buffer UEs are

UEs that perform continuous data transmission and have a large amount of data to be transmitted.

In scenarios where there are 12 full buffer HSUPA 2 ms TTI UEs, the uplink cell throughput increases by 30% to 60% after Turbo IC is activated;

Turbo IC increases the uplink cell throughput by 15% to 30% compared with HSUPA UL Interference Cancellation.

In scenarios in which one HSUPA 2 ms TTI UE is processing full-buffer services and 20 to 30 UEs are processing burst services, the uplink cell

throughput increases by 25% to 50% after Turbo IC is activated; Turbo IC increases the uplink cell throughput by 10% to 25% compared with

HSUPA UL Interference Cancellation.

WBBPf boards and other boards form an uplink resource group.

In scenarios where there are 4 full buffer HSUPA 2 ms TTI UEs, the uplink cell throughput increases by 25% to 60% after Turbo IC is activated;Turbo IC increases the uplink cell throughput by 5% to 20% compared with HSUPA UL Interference Cancellation.

In scenarios where there are 12 full buffer HSUPA 2 ms TTI UEs, the uplink cell throughput increases by 25% to 60% after Turbo IC is activated;

Turbo IC increases the uplink cell throughput by 5% to 25% compared with HSUPA UL Interference Cancellation.

In scenarios in which one HSUPA 2 ms TTI UE is processing full-buffer services and 20 to 30 UEs are processing burst services, the uplink cell

throughput increases by 20% to 50% after Turbo IC is activated; Turbo IC increases the uplink cell throughput by 5% to 15% compared with

HSUPA UL Interference Cancellation.

Network Performance

You are advised to replace the WBBPa or WBBPb board with a WBBPf board to maximize the gains provided by Turbo IC. The reason is as follows:

Assume that a WBBPa or WBBPb board and a WBBPf board form an uplink resource group. When the INTERBOARDICSW parameter is set to FULL_IC for a

WBBPa or WBBPb board to benefit from Turbo IC gains provided by a WBBPf board, UEs whose data channels are carried on the WBBPa or WBBPb board must set

up DPCCHs on the WBBPf board for power control purposes. In addition, UEs whose downlink services are carried on HSDPA channels must set up another

HS-DPCCH on the WBBPf board. The new channels consume extra resources, which reduces the total number of users supported by the system and decreases the

access success rate.


31 7/8/2015




7 Engineering Guidelines


7.1.1 When to Use Control Channel Parallel Interference Cancellation (CCPIC)

Use CCPIC when the following conditions are met:

The uplink system capacity needs to be expanded.

The uplink DPCCH uses a large proportion of RTWP in the target cell.

UE distribution is unbalanced among boards.

The uplink Uu-interface load is high in the target cell when,

for example, the following inequality is true:

VS.MeanRTWP > BackgroundNoise + Target load - 2 dB, where Target load = 10 x LOG 10 (1/(1 - MaxTargetUlLoadFactor( BSC6900 ,BSC6910 )))

A large number of UEs camp on the target cell when,


VS.CellDCHUEs > 12

Only a small number of boards are configured in the uplink resource group. For example, only one CCPIC-capable board is configured in the group.


Obtain the values of the counters listed in the following table:

Counter Name Description

VS.MeanRTWP Mean Power of Totally Received Bandwidth for Cell

VS.CellDCHUEs Number of UEs in CELL_DCH State for Cell

VS.HSUPA.Thruput.ROTMorX Cell Throughput of HSUPA Users Under Different Uu Interface Loads (X=3, 6, 7, 9, 10,

13, or 20, or ALL)

VS.HSUPA.DataTtiNum.ROTMorX Number of TTIs in which HSUPA Users Have Data to Transmit Under Different Uu

Interface Loads in a Cell (X=3, 6, 7, 9, 10, 13, 20)

VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-lnterface Load Is Between Ydb to Zdb (Ratio of the

Actual RTWP in a Cell to the Reference RTWP) (X=0~25)

Obtain the values of the following counters to determine whether to activate CCPIC:

VS.HSUPA.UE.Mean.Cell

VS.MeanRTWP

Activate CCPIC when the following inequalities are true:


VS.CellDCHUEs > 12

Obtain the values of the following counters to evaluate the gains provided by CCPIC:

VS.CellDCHUEs

VS.HSUPA.DataTtiNum.ROTMorX

VS.HSUPA.LoadOutput.X

VS.HSUPA.Thruput.ROTMorX

7.1.3 Deployment


Dependencies on Hardware

3800 series base stations must be configured with the EBBC or EBBCd board.

The BTS3812E and BTS3812AE must be configured with the EBBI, EBOI, EULP, or EULPd board.

3900 series base stations must be configured with the WBBPb, WBBPd, or WBBPf board.

The BTS3803E and BTS3902E support this feature and this feature is recommended to be activated.

Dependencies on Other Features

None

License

The license "CCPIC Function(per NodeB)" on the NodeB side has been activated. For details about how to activate the license, see License Management Feature


Feature ID Feature Name License Resource Item NE Sales Unit


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WRFD-010210 Control Channel Parallel Interference

Cancellation (CCPIC)

CCPIC Function(per NodeB) NodeB per NodeB


None

7.1.3.3 Activation

CCPIC is automatically activated after the license that controls this feature is activated.

7.1.3.4 Activation ObservationRun the NodeB MML command DSP LICENSE to query whether the license that controls CCPIC has been activated. Figure 7-1 shows the query results.

Figure 7-1 Query results of the CCPIC license status

NOTE:

Observe the activation effect when there are a large number of UEs because CCPIC gains are obvious only in this scenario.


Deactivate the license that controls CCPIC.


CCPIC performance can be monitored by the uplink system capacity and uplink load. The two items are measured by the counters listed in the following table:



VS.HSUPA.Thruput.ROTMorX Cell Throughput of HSUPA Users Under Different Uu Interface Loads (X=3, 6, 7, 9, 10, 13, or

20)

VS.HSUPA.DataTtiNum.ROTMorX Number of TTIs in which HSUPA Users Have Data to Transmit Under Different Uu Interface

Loads in a Cell (X=3, 6, 7, 9, 10, 13, 20, or ALL)

VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-lnterface Load Is Between Ydb to Zdb (Ratio of the Actual

RTWP in a Cell to the Reference RTWP) (X=0~25)

Uplink System Capacity

CCPIC can increase the uplink capacity for a cell when the cell load is high. The uplink cell capacity can be monitored by the average number of online UEs in the cell

or the uplink cell throughput as follows:


31 7/8/2015



If existing UEs in the cell are not processing data and many other UEs attempt to access the cell when power-based admission control has been activated,

compare the value of VS.CellDCHUEs before and after feature activation to evaluate the feature gains. A sample scenario is when a large number of R99

UEs camp on the cell.

When a large amount of HSUPA data needs to be transmitted, compare the values of VS.HSUPA.Thruput.ROTMorX and VS.HSUPA.DataTtiNum.ROTMor

X before and after feature activation to monitor the feature gains. The expected result is that VS.HSUPA.Thruput.ROTMorX and

VS.HSUPA.Thruput.ROTMorX divided by VS.HSUPA.DataTtiNum.ROTMorX increase after feature activation where X = 10LOG 10(1/(1-

MaxTargetUlLoadFactor( BSC6900 ,BSC6910 ))).

Uplink Load

If the uplink cell capacity remains unchanged, CCPIC helps decrease the cell load. Compare the value of VS.HSUPA.LoadOutput.X before and after feature activation

to monitor the feature gains. The expected result is that the counter value decreases after feature activation.


None


None


7.2.1 When to Use Control Channel Parallel Interference Cancellation (Phase 2)

Use CCPIC (Phase 2) when the following conditions are met:

The uplink system capacity needs to be expanded.

The uplink DPCCH uses a large proportion of RTWP in the target cell.


for example, the following inequality is true:VS.MeanRTWP > BackgroundNoise + Target load - 2 dB, where Target load = 10 x LOG 10 (1/(1 - MaxTargetUlLoadFactor( BSC6900 ,BSC6910 )))

A large number of UEs camp on the target cell when,


VS.CellDCHUEs > 12


The information to be collected for CCPIC(Phase 2) is the same as that for CCPIC. For details, see section 7.1.2 Information to Be Collected.

7.2.3 Deployment



The 3900 series base stations support this feature and must be configured with the WBBPd or WBBPf board.

To support inter-board IC, the WBBPd or WBBPf board must be configured for the uplink resource group that supports inter-board IC. In addition, at leastone WBBPd or WBBPf board must be configured in slot 2 or 3.

UEs with their data channels carried on a WBBPa or WBBPb board of 3900 series base stations can share the IC gains from a WBBPd or WBBPf board

only when the following conditions are met:

The WBBPa or WBBPb board and the WBBPd or WBBPf board are installed in one BBU to form an uplink resource group.

INTERBOARDICSW is set to FULL_IC.

Inter-board data channels are configured for the UEs to set up control channels on the WBBPd or WBBPf board.

NOTE:

Replace the WBBPa or WBBPb board with a WBBPd or WBBPf board to maximize the gains provided by CCPIC (Phase 2). The reason is as follows:

Assume that a WBBPa or WBBPb board and a WBBPd or WBBPf board form an uplink resource group. When the INTERBOARDICSW parameter is set to

FULL_IC for a WBBPa or WBBPb board to benefit from CCPIC (Phase 2) gains provided by a WBBPd or WBBPf board, UEs whose data channels are

carried on the WBBPa or WBBPb board must set up DPCCHs on the WBBPd or WBBPf board for power control purposes. In addition, UEs whose downlink

services are carried on HSDPA channels must set up another HS-DPCCH on the WBBPd or WBBPf board. The new channels consume extra resources,

which reduces the total number of users supported by the system and decreases the access success rate.

The BTS3803E supports this feature.

The BTS3902E does not support this feature.


WRFD-010210 Control Channel Parallel Interference Cancellation (CCPIC) must be activated.

License

The license "Control Channel Parallel Interference Cancellation (Phase 2)(per NodeB) " on the NodeB side has been activated. For details about how to

activate the license, see License Management Feature Parameter Description.

Feature ID Feature Name License Control Item NE Sales Unit

WRFD-140202 Control Channel Parallel Interference

Cancellation (Phase 2)

Control Channel Parallel Interference

Cancellation (Phase 2)(per NodeB)

NodeB Per NodeB


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None

7.2.3.3 Activation

Using MML Commands

After the license controlling CCPIC (Phase 2) is activated, CCPIC (Phase 2) automatically takes effect on WBBPd and WBBPf boards. For WBBPa and WBBPb

boards, activate CCPIC (Phase 2) in different scenarios listed in Table 7-1.

Table 7-1 Activation scenarios

Scenario Does a WBBPa or WBBPb Need to Share IC Gains? Value of the Parameter Inter-board cancellation gain switch

between the WBBPa and WBBPb boards

Scenario 1 No PART_IC(Old board can not share IC gain)

Scenario 2 No FULL_IC(All board can share IC gain)

Scenario 3 Yes PART_IC(Old board can not share IC gain)

Scenario 4 Yes FULL_IC(All board can share IC gain)

NOTE:

Run the NodeB MML command LST NODEBICMODE to query the value of the Inter-board cancellation gain switch between the WBBPa and WBBPb boards

parameter.

If HSUPA UL IC or Turbo IC has been activated before CCPIC (Phase 2), the value for Inter-board cancellation gain switch between the WBBPa and WBBPb

boards remains unchanged after CCPIC (Phase 2) is activated.

If HSUPA UL IC or Turbo IC is not activated before CCPIC (Phase 2), it is recommended that Inter-board cancellation gain switch between the WBBPa and

WBBPb boards be set to PART_IC(Old board can not share IC gain) after CCPIC (Phase 2) is activated.

Scenario 1:

No configuration is required.

Scenario 2:

Run the NodeB MML command SET NODEBICMODE. In this step, set Inter-board cancellation gain switch between the WBBPa and WBBPb boards

to PART_IC(Old board can not share IC gain).

NOTE:

Running the SET NODEBICMODE command may cause call drops on UEs whose data is carried over WBBPa or WBBPb boards. Therefore, it is recommended that

you run this command when traffic is light, for example, early in the morning.

Scenario 3:

Run the NodeB MML command LST NODEBRESALLOCRULE to check whether the Auto Rebuild Cell Switch is turned on.

If the switch is turned on, run the NodeB MML command SET NODEBICMODE and set Inter-board cancellation gain switch between theWBBPa and WBBPb boards to FULL_IC(All board can share IC gain).

If the switch is turned off, do as follows:

Run the NodeB MML command SET NODEBICMODE and set Inter-board cancellation gain switch between the WBBPa and WBBPb boards to

FULL_IC(All board can share IC gain).

1.

(Optional) Run the NodeB MML command SET NODEBRESALLOCRULE. In this step, set Auto Rebuild Cell Switch to ON(ON) and set Cs User

Number Threshold and Ps User Number Threshold to appropriate values. If the number of CS users or PS CELL_DCH users in the downlink resource

group is equal to or less than the corresponding threshold, the local cell is automatically reestablished.

2.

NOTE:

Running the SET NODEBICMODE command may cause call drops on UEs whose data is carried over WBBPa or WBBPb boards. Therefore, it is

recommended that you run this command when traffic is light, for example, early in the morning.

It is recommended that you perform step 2 when the Auto Rebuild Cell Switch is turned off. The reason is as follows: WBBPa and WBBPb boards cannot

share IC gains if the board status changes in an uplink resource group and can share IC gains again after the local cell is reestablished.

Scenario 4:

Run the NodeB MML command LST NODEBRESALLOCRULE and check whether the Auto Rebuild Cell Switch is turned on.

If the switch is turned on, no configuration is required. However, WBBPa and WBBPb boards can share IC gains only after the local cell is

reestablished.

If the switch is turned off, run the NodeB MML command SET NODEBRESALLOCRULE. Then, set Auto Rebuild Cell Switch to ON(ON) and

set Cs User Number Threshold and Ps User Number Threshold to appropriate values. If the number of CS users or PS CELL_DCH users in

the downlink resource group is equal to or less than the corresponding threshold, the local cell is automatically reestablished.

NOTE:

It is recommended that the Auto Rebuild Cell Switch be turned on. The reason is as follows: WBBPa and WBBPb boards cannot share IC gains if the

board status changes in an uplink resource group and can share IC gains again after the local cell is reestablished.

MML Command Examples

//Activating CCPIC (Phase 2)


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//Scenario 1:

//No configuration is required.

//Scenario 2SET NODEBICMODE: INTERBOARDICSW =PART_IC;

//Scenario 3

SET NODEBICMODE: INTERBOARDICSW =FULL_IC;

LST NODEBRESALLOCRULE:;//If the Auto Rebuild Cell Switch is turned off:

SET NODEBRESALLOCRULE: SW=ON, CSUSERNUM=0, PSUSERNUM=0;

//Scenario 4

LST NODEBRESALLOCRULE:;//If the Auto Rebuild Cell Switch is turned off:SET NODEBRESALLOCRULE: SW=ON, CSUSERNUM=0, PSUSERNUM=0;

Activation (Using the CME)

NOTE:

When configuring the CCPIC (Phase 2) feature on the CME, perform a single configuration first, and then perform a batch modification if required.

Configure the parameters of a single object before a batch modification. Perform a batch modification before logging out of the parameter setting interface.

Configure a single object (such as a cell) on the CME.

Set parameters on the CME according to the operation sequence in Table 7-2 for scenario 2 , Table 7-3 for scenario 3, or Table 7-4 for scenario 4. For

instructions on how to perform the CME single configuration, see CME Single Configuration Operation Guide.

1.

(Optional) Modify objects in batches on the CME. (CME batch modification center)

To modify objects in batches, click on the CME to start the batch modification wizard. For instructions on how to perform a batch modification throughthe CME batch modification center, press F1 on the wizard interface to obtain online help.

2.

NOTE:

In scenario 1, CCPIC (Phase 2) is automatically activated after the license that controls this feature is activated.

Table 7-2 Configuring parameters on the CME (scenario 2)

SN MO NE Parameter Name Parameter ID Configurable in CME

Batch Modification

Center

1 NODEBALGPARA NodeB Inter-board cancellation gain switch

between the WBBPa and WBBPb

boards

NOTE:

Set this parameter to PART_IC(Oldboard can not share IC gain).

INTERBOARDICSW Yes



Batch Modification

Center

1 NODEBALGPARA NodeB Inter-board cancellation gain switch

between the WBBPa and WBBPb

boards

NOTE:

Set this parameter

to FULL_IC(All board can share IC

gain).

INTERBOARDICSW Yes

2 NODEBRESALLOCRULE NodeB Auto Rebuild Cell Switch

NOTE:

Set this parameter to ON(ON).

SW Yes

Cs User Number Threshold CSUSERNUM

Ps User Number Threshold PSUSERNUM



Batch Modification


31 7/8/2015



Center


NOTE:


SW Yes




Check whether CCPIC (Phase 2) has been activated using the RNC or NodeB LMT. If the base station is configured with the RRU3801C, the following verification

modes do not apply.

NOTE:

Observe the activation effect only when there are a large number of UEs because CCPIC (Phase 2) gains are obvious only in this scenario.

Using the RNC LMT:

On the RNC LMT, click Monitor , choose Cell Performance Monitoring > RTWP, enter the cell ID, and click Submit.1.

Check whether a valid value is displayed for Cell measured RTWP After First Stage Interference Cancellation.

Expected result:

A valid value is displayed, indicating that the CCPIC (Phase 2) feature is functioning properly. When there are a large number of UEs, Cell measured

RTWP After First Stage Interference Cancellation is smaller than Cell Measured RTWP. The RTWP decrease further indicates that this feature has

been activated. Figure 7-2 shows the RTWP monitoring result displayed on the RNC LMT.

Figure 7-2 Cell-level RTWP monitoring on the RNC LMT

2.

Using the NodeB LMT:

On the NodeB LMT, click Maintenance, choose Service > Realtime Specific Monitoring > Cell RTWP.1.

Check whether a valid value is displayed for Cell measured RTWP After First Stage Interference Cancellation.

Expected result:

A valid value is displayed, indicating that the CCPIC (Phase 2) feature is functioning properly. When there are a large number of UEs, Cell measured

RTWP After First Stage Interference Cancellation is smaller than Cell Measured RTWP. The RTWP decrease further indicates that this feature has

been activated. Figure 7-3 shows the RTWP monitoring result displayed on the NodeB LMT.

Figure 7-3 Cell-level RTWP monitoring on the NodeB LMT

2.


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Deactivate the license that controls CCPIC (Phase 2).


CPIC (Phase 2) performance can be monitored by the IC efficiency, uplink system capacity, and uplink load. The three items are measured by the counters listed in the

following table:




13, or 20, or ALL)



VS.FirstStageIcEff.Mean Average Value of First-Stage IC Efficiency

VS.FirstStageIcEff.Max Maximum Value of First-Stage IC Efficiency

VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-lnterface Load Is Between Ydb to Zdb

(Ratio of the Actual RTWP in a Cell to the Reference RTWP) (X=0~25)

IC Efficiency

After feature activation, the values of the VS.FirstStageIcEff.Mean and VS.FirstStageIcEff.Max counters are not 0.


CCPIC (Phase 2) can increase the uplink capacity for a cell when the cell load is high. The uplink cell capacity can be monitored by the average number of online UEs

in the cell or the uplink cell throughput as described in the following:

If existing UEs in the cell are not processing data and many other UEs attempt to access the cell when power-based admission control has been activated, compare

the value of VS.CellDCHUEs before and after feature activation to evaluate the feature gains. A sample scenario is when a large number of R99 UEs camp on the cell.

When a large amount of HSUPA data needs to be transmitted, compare the values of VS.HSUPA.Thruput.ROTMorX and VS.HSUPA.DataTtiNum.ROTMorX before

and after feature activation to monitor the feature gains. The expected result is that VS.HSUPA.Thruput.ROTMorX and VS.HSUPA.Thruput.ROTMorX divided by

VS.HSUPA.DataTtiNum.ROTMorX increase after feature activation where X = 10LOG10(1/(1-MaxTargetUlLoadFactor( BSC6900 ,BSC6910 ))).

Uplink Load

If the uplink cell capacity remains unchanged, CCPIC (Phase 2) helps decrease the uplink cell load. Compare the value of VS.HSUPA.LoadOutput.X before and after

feature activation to monitor the feature gains. The expected result is that the counter value decreases after feature activation.

NOTE:

Use the following formula to calculate the efficiency of the first-stage IC for a cell:

Efficiency of the first-stage IC = (RTWP measured before IC - RTWP measured after first-stage IC)/RTWP measured before IC


If the NodeB uplink resource group is not configured with a WBBPa or WBBPb board, parameter optimization is not needed.

If the NodeB uplink resource group is configured with a WBBPa or WBBPb board and INTERBOARDICSW is set to PART_IC, you can change INTERBOARDICSW to

FULL_IC to further increase Uu interface capacity. However, this change may reduce the number of UEs to be admitted. Do not make this change when the number of

UEs to be admitted is limited. To increase the uplink system capacity without limiting the UE number, replace the WBBPa or WBBPb board with a WBBPd or WBBPf

board. If the replacement is not performed, you are advised to set the INTERBOARDICSW parameter to PART_IC.


None


7.3.1 When to Use HSUPA UL Interference Cancellation

Use HSUPA UL IC when the following conditions are met:




A small number of HSUPA UEs camp on the target cell when,


VS.HSUPA.MeanBitRate.WithData > a value within the range of 100 kbit/s to 400 kbit/s




31 7/8/2015





VS.HSUPA.UE.Mean.Cell Average Number of HSUPA UEs in a Cell

VS.HSUPA.MeanBitRate.WithData Average Throughput of HSUPA Users in a Cell when Data Is Transmitted


VS.HSUPA.Thruput.ROTMorX Cell Throughput of HSUPA Users Under Different Uu Interface Loads (X=3, 6, 7,

9, 10, 13, or 20, or ALL)

VS.HSUPA.DataTtiNum.ROTMorX Number of TTIs in which HSUPA Users Have Data to Transmit Under Different UuInterface Loads in a Cell (X=3, 6, 7, 9, 10, 13, 20)

VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-lnterface Load Is Between Ydb to Zdb (Ratio of

the Actual RTWP in a Cell to the Reference RTWP) (X=0~25)

Obtain the values of the following counters to determine whether to activate HSUPA UL IC:

VS.MeanRTWP

VS.HSUPA.UE.Mean.Cell

VS.HSUPA.MeanBitRate.WithData

Obtain the values of the following counters to evaluate the gains provided by HSUPA UL IC:


VS.CellDCHUEs



VS.HSUPA.Thruput

7.3.3 Deployment



Dependencies on RNC Hardware

None

Dependencies on NodeB Hardware

3800 series base stations must be configured with EBBCd boards, which support E-DPDCH IC and inter-board IC. If two EBBCd boards are

configured, do not enable inter-board IC for both boards. Otherwise, only one of the EBBCd boards can support E-DPDCH IC.

The BTS3812E and BTS3812AE must be configured with the EULPd board, and downlink services of the target cell cannot be established on

the HBBI or HDLP/NDLP board. The BTS3812E and BTS3812AE do not support inter-board IC.

3900 series base stations must be configured with the WBBPd or WBBPf board. At least one WBBPd or WBBPf board must be configured in

slot 2 or 3 to support inter-board IC. 3900 series base stations support inter-board E-DPDCH IC. Whether the WBBPa or WBBPb board can

benefit from other boards depends on the setting of the INTERBOARDICSW parameter.

The BTS3803E and BTS3902E support this feature.

UEs with their data channels carried on a WBBPa or WBBPb board of 3900 series base stations can share the IC gains from a WBBPd or

WBBPf board only when the following conditions are met:





WRFD-010612 HSUPA Introduction Package

License

The license "IC Function(per Cell)" on the NodeB side has been activated. For details about how to activate the license, see License Management Feature



WRFD-010691 HSUPA UL Interference

Cancellation

IC Function(per Cell) NodeB Per cell

Other Prerequisites

The NodeB software version must be RAN12.0 or later.

The BSC6900 software version must be RAN12.0 or later.


None


31 7/8/2015



7.3.3.3 Activation

Using MML Commands

Scenario 1: The WBBPa/WBBPb board is configured in the uplink resource group and Inter-board cancellation gain switch between the WBBPa and WBBPb

boards is set to FULL_IC(All board can share IC gain). In scenario 1, perform the following steps:

For the BTS3812AE, BTS3812E, and DBS3800

Run the NodeB MML command MOD LOCELL to modify the local cell. In this step, set IC to TRUE(TRUE).1.

Run the NodeB MML command SET RESALLOCRULE. In this step, set Auto Rebuild Cell Switch to ON(ON) and set Cs User Number

Threshold and Ps User Number Threshold to appropriate values. When the number of CS UEs in a downlink resource group is smaller than

or equal to the value of Cs User Number Threshold and the number of PS UEs in the CELL_DCH state is smaller than or equal to the value of

Ps User Number Threshold, local cells are automatically reestablished.

2.

For the 3900 series base stations, BTS3902E, and BTS3803E

Run the NodeB MML command MOD ULOCELL to modify the local cell. In this step, set IC to TRUE(TRUE).1.

Run the NodeB MML command SET NODEBRESALLOCRULE. In this step, set Auto Rebuild Cell Switch to ON(ON) and set Cs User

Number Threshold and Ps User Number Threshold to appropriate values. When the number of CS UEs in a downlink resource group is

smaller than or equal to the value of Cs User Number Threshold and the number of PS UEs in the CELL_DCH state is smaller than or equal

to the value of Ps User Number Threshold, local cells are automatically reestablished.

2.

Scenario 2: The WBBPa/WBBPb board is not configured in the uplink resource group; alternatively the WBBPa/WBBPb board is configured in the uplink resource

group and Inter-board cancellation gain switch between the WBBPa and WBBPb boards is set to PART_IC(Old board can not share IC gain). In scenario 2,

perform the following steps:

For the BTS3812AE, BTS3812E, and DBS3800:

Run the NodeB MML command MOD LOCELL to modify the local cell. In this step, set IC to TRUE(TRUE).

For the 3900 series base stations, BTS3902E, and BTS3803E:

Run the NodeB MML command MOD ULOCELL to modify the local cell. In this step, set IC to TRUE(TRUE).

NOTE:

Run the NodeB MML command LST NODEBICMODE to query the value of the Inter-board cancellation gain switch between the WBBPa and WBBPb

boards parameter.

If CCPIC (Phase 2) has been activated before HSUPA UL IC, the value for Inter-board cancellation gain switch between the WBBPa and WBBPb

boards remains unchanged after HSUPA UL IC is activated.

If CCPIC (Phase 2) has been activated before HSUPA UL IC, it is recommended that Inter-board cancellation gain switch between the WBBPa and

WBBPb boards be set to PART_IC(Old board can not share IC gain) after HSUPA UL IC is activated.


//Activating HSUPA UL Interference Cancellation

//For the BTS3812AE, BTS3812E, and DBS3800

//In scenario 1:

MOD LOCELL: LOCELL=1, SECT=LOCAL_SECTOR, IC_MODE=TRUE;

SET RESALLOCRULE: SW=ON, CSUSERNUM=0, PSUSERNUM=0;

//In scenario 2:

MOD LOCELL: LOCELL=1, SECT=LOCAL_SECTOR, IC_MODE=TRUE;

//For the 3900 series base stations, BTS3902E, and BTS3803E

//In scenario 1:

MOD ULOCELL: ULOCELLID=1, LOCELLTYPE=NORMAL_CELL, ICMODE=TRUE;

SET NODEBRESALLOCRULE: SW=ON, CSUSERNUM=0, PSUSERNUM=0;

//In scenario 2:

MOD ULOCELL: ULOCELLID=1, LOCELLTYPE=NORMAL_CELL, ICMODE=TRUE;

Activation (Using the CME)

NOTE:When configuring the HSUPA UL IC feature on the CME, perform a single configuration first, and then perform a batch modification if required.



Set parameters on the CME according to the operation sequence in Table 7-5 for scenario 1 or Table 7-6 for scenario 2. For instructions on how to perform

the CME single configuration, see CME Single Configuration Operation Guide.

1.


To modify objects in batches, click on the CME to start the batch modification wizard. For instructions on how to perform a batch modification through

the CME batch modification center, press F1 on the wizard interface to obtain online help.

2.




31 7/8/2015



Batch Modification

Center

1 For the BTS3812AE,

BTS3812E, and DBS3800:

LOCELL

NodeB IC

NOTE:

Set this parameter to TRUE(TRUE).

IC_MODE Yes

For the 3900 series base

stations, BTS3902E, and

BTS3803E: ULOCELL

NodeB IC

NOTE:


ICMODE Yes


BTS3812E, and DBS3800:

RESALLOCRULE



BTS3803E:

NODEBRESALLOCRULE

NodeB Auto Rebuild Cell Switch

NOTE


SW Yes





Batch Modification

Center


BTS3812E, and DBS3800:LOCELL

NodeB IC

NOTE:


IC_MODE Yes



BTS3803E:

ULOCELL

NodeB IC

NOTE:


ICMODE Yes


Check whether the HSUPA UL Interference Cancellation feature has been activated using the RNC or NodeB LMT. The following steps are performed on the NodeB

LMT:

Query the status of a local cell.

For the BTS3812AE, BTS3812E, and DBS3800, run the NodeB MML command DSP LOCELL to query the status of a local cell.

For the 3900 series base stations, BTS3902E, and BTS3803E, run the NodeB MML command DSP ULOCELL to query the status of a local cell.

Expected result: The value of IC MODE is ENABLED.

1.

Select Service > Realtime Specific Monitoring > Cell RTWP from the navigation tree in Maintenance tab on the NodeB LMT. In Figure 7-4 the column

1-3 indicates the state of this feature before activation, and the column 1-4 indicates the state of this feature after activation. If the value of column 1-4 is

less than the value of column 1-3, the feature has been activated.

Figure 7-4 Cell RTWP 1

2.


Using MML Commands

For the BTS3812AE, BTS3812E, and DBS3800

Run the NodeB MML command MOD LOCELL to modify the local cell. In this step, set IC to FALSE.

For the 3900 series base stations, BTS3902E, and BTS3803E

Run the NodeB MML command MOD ULOCELL to modify the local cell. In this step, set IC to FALSE.

NOTE:

If the WBBPa/WBBPb board is configured in the uplink resource group and Inter-board cancellation gain switch between the WBBPa and WBBPb boards is set to


31 7/8/2015



FULL_IC, deactivating HSUPA UL Interference Cancellation may cause UEs admitted on the WBBPa/WBBPb board to experience call drops.


//Deactivating HSUPA UL Interference Cancellation

//For the BTS3812AE, BTS3812E, and DBS3800:

MOD LOCELL: LOCELL=1, SECT=LOCAL_SECTOR, IC_MODE=FALSE;

//For the 3900 series base stations, BTS3902E, and BTS3803E:

MOD ULOCELL: ULOCELLID=1, LOCELLTYPE=NORMAL_CELL, ICMODE=FALSE;

Deactivation (Using the CME)

NOTE:

When configuring the HSUPA UL IC feature on the CME, perform a single configuration first, and then perform a batch modification if required.



Set parameters on the CME according to the operation sequence in Table 7-7. For instructions on how to perform the CME single configuration, see CME

Single Configuration Operation Guide.

1.




2.

Table 7-7 Configuring parameters on the CME


Batch Modification

Center

1 For the BTS3812AE, BTS3812E,

and DBS3800: LOCELL

NodeB IC

NOTE:

Set this parameter to FALSE(FALSE).

IC_MODE Yes

For the 3900 series base stations,

BTS3902E, and BTS3803E:

ULOCELL

NodeB IC

NOTE:

Set this parameter to FALSE(FALSE).

ICMODE Yes


HSUPA UL IC performance can be monitored by the IC efficiency, uplink system capacity, and uplink load. The three items are measured by the counters listed in the

following table:




13, or 20, or ALL)



VS.HSUPA.Ic.MeanEff Average IC Efficiency in a Cell

VS.HSUPA.Ic.MaxEff Maximum IC Efficiency in a Cell

VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-Interface Load Is Between Ydb to Zdb (Ratio of the Actual


IC Efficiency

After feature activation, the values of the VS.HSUPA.Ic.MeanEff and VS.HSUPA.Ic.MaxEff counters are not 0.


HSUPA UL IC can increase the uplink capacity for a cell if the cell load is high. The uplink cell capacity can be monitored by the average number of online UEs in the

cell or the uplink cell throughput as described in the following:



UEs and a small number of HSUPA UEs co-exist in the cell.

When a large amount of HSUPA data needs to be transmitted, compare the values of VS.HSUPA.Thruput.ROTMorX and

VS.HSUPA.DataTtiNum.ROTMorX before and after feature activation to monitor the feature gains. The expected result is that

VS.HSUPA.Thruput.ROTMorX and VS.HSUPA.Thruput.ROTMorX divided by VS.HSUPA.DataTtiNum.ROTMorX increase after feature activation where X =

10LOG10(1/(1-MaxTargetUlLoadFactor( BSC6900 ,BSC6910 ))).


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Uplink Load

If the uplink cell capacity remains unchanged, HSUPA UL IC helps decrease the uplink cell load. Compare the value of VS.HSUPA.LoadOutput.X before and after

feature activation to monitor the feature gains. The expected result is that the counter value decreases after feature activation.

NOTE:

Use the following formula to calculate the IC efficiency for a cell:

IC efficiency = (RTWP measured before IC - RTWP measured after final IC)/RTWP measured before IC


None


None


7.4.1 When to Use Turbo IC

Use Turbo IC when the following conditions are met:




HSUPA 2 ms TTI UEs with continuous data transmission account for a large proportion when, for example, the following inequality is true:

VS.HSUPA.UE.Mean.TTI2 ms/VS.CellDCHUEs > 0.5

Alternatively, there are high-speed HSUPA 2 ms TTI UEs when, for example, the following inequality is true:VS.HSUPA.TTI2 msUserNumber.2 + VS.HSUPA.TTI2 msUserNumber.3 + VS.HSUPA.TTI2 msUserNumber.4 + VS.HSUPA.TTI2 msUserNumber.5 > 1





VS.HSUPA.TTI2msUserNumber.X Average Number of 2 ms TTI HSUPA Users at Different Rates in a Cell Within a

Measurement Period (X=0~5)


VS.HSUPA.UE.Mean.TTI2ms Average Number of HSUPA 2 ms TTI UEs in a Cell

VS.HSUPA.Thruput.ROTMorX Cell Throughput of HSUPA Users Under Different Uu Interface Loads (X=3, 6, 7, 9, 10, 13,

or 20, or ALL)





VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-lnterface Load Is Between Ydb to Zdb (Ratio of the Actual


Obtain the values of the following counters to determine whether to activate Turbo IC:

VS.CellDCHUEs

VS.HSUPA.TTI2msUserNumber.X

VS.HSUPA.UE.Mean.TTI2 ms

VS.MeanRTWP

Obtain the values of the following counters to evaluate the gains provided by Turbo IC:

VS.CellDCHUEs


VS.HSUPA.Ic.MaxEff

VS.HSUPA.Ic.MeanEff



7.4.3 Deployment



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3900 series base stations configured with at least one WBBPf board in the uplink resource group. At least one WBBPd or WBBPf board must be configured

in slot 2 or 3 to support inter-board IC. All boards in the uplink resource group must be configured as WBBPf boards to support inter-board Turbo IC.

The BTS3803E supports this feature.

UEs with their data channels carried on a WBBPa or WBBPb board of 3900 series base stations. can share the IC gains from a WBBPd or WBBPf board

only when the following conditions are met:




BTS3803E supports this feature.BTS3902E does not support this feature.

Prerequisite features

The following features must have been configured before this feature is activated:

WRFD-01061403 HSUPA 2 ms TTI

WRFD-010691 HSUPA UL Interference Cancellation.

For details about how to activate WRFD-01061403 HSUPA 2 ms TTI, see HSUPA Feature Parameter Description.

For details about how to activate WRFD-010691 HSUPA UL Interference Cancellation, see 7.3 WRFD-010691 HSUPA UL Interference

Cancellation.

License

The license " Turbo IC Function(per Cell)" on the NodeB side has been activated. For details about how to activate the license, see License Management

Feature Parameter Description.


WRFD-150206 Turbo IC Turbo IC Function(per Cell) NodeB Per cell

Others Prerequisites

NodeB software: RAN15.0 or later.


None

7.4.3.3 Activation

Using MML Commands

Scenario 1: The WBBPa/WBBPb board is configured in the uplink resource group and Inter-board cancellation gain switch between the WBBPa and

WBBPb boards is set to FULL_IC(All board can share IC gain. In scenario 1, perform the following steps:

Run the NodeB MML command MOD ULOCELL to modify the local cell. In this step, set IC and TURBO IC to TRUE(TRUE).1.

Run the NodeB MML command SET NODEBRESALLOCRULE. In this step, set Auto Rebuild Cell Switch to ON(ON) and set Cs User Number

Threshold and Ps User Number Threshold to appropriate values. When the number of CS UEs in a downlink resource group is smaller than or equal to

the value of Cs User Number Threshold and the number of PS UEs in the CELL_DCH state is smaller than or equal to the value of Ps User Number

Threshold, local cells are automatically reestablished.

2.

Scenario 2: The WBBPa/WBBPb board is not configured in the uplink resource group; alternatively the WBBPa/WBBPb board is configured in the uplink

resource group and Inter-board cancellation gain switch between the WBBPa and WBBPb boards is set to PART_IC(Old board can not share IC

gain). In scenario 2, perform the following step:

Run the NodeB MML command MOD ULOCELL to modify the local cell. In this step, set IC and TURBO IC to TRUE(TRUE).1.

NOTE:

Run the NodeB MML command LST NODEBICMODE to query the value of the Inter-board cancellation gain switch between the WBBPa and WBBPb boards

parameter.

If CCPIC (Phase 2) or HSUPA UL IC has been activated before Turbo IC, the value for Inter-board cancellation gain switch between the WBBPa and WBBPb

boards remains unchanged after Turbo IC is activated.If CCPIC (Phase 2) or HSUPA UL IC is not activated before CCPIC (Phase 2), it is recommended that Inter-board cancellation gain switch between the WBBPa

and WBBPb boards be set to PART_IC(Old board can not share IC gain) after Turbo IC is activated.


//Activating Turbo IC

//In scenario 1:

MOD ULOCELL: ULOCELLID=0, LOCELLTYPE=NORMAL_CELL, ICMODE=TRUE, TURBOIC=TRUE;SET NODEBRESALLOCRULE: SW=ON, CSUSERNUM=0, PSUSERNUM=0;

//In scenario 2:

MOD ULOCELL: ULOCELLID=0, LOCELLTYPE=NORMAL_CELL, ICMODE=TRUE, TURBOIC=TRUE;

Using the CME


31 7/8/2015



NOTE:

When configuring the Turbo IC feature on the CME, perform a single configuration first, and then perform a batch modification if required.



Set parameters on the CME according to the operation sequence inTable 7-8 for scenario 1 or Table 7-9 for scenario 2. For instructions on how to perform

the CME single configuration, see CME Single Configuration Operation Guide.

1.




2.

NOTE:

In scenario 1, the WBBPa/WBBPb board is configured in the uplink resource group and Inter-board cancellation gain switch between the WBBPa and

WBBPb boards is set to FULL_IC(All board can share IC gain.

In scenario 2, the WBBPa/WBBPb board is not configured in the uplink resource group; alternatively the WBBPa/WBBPb board is configured in the uplink

resource group and Inter-board cancellation gain switch between the WBBPa and WBBPb boards is set to PART_IC(Old board can not share IC

gain).



Batch Modification

Center

1 ULOCELL NodeB IC

NOTE:

Set this parameter to

TRUE(TRUE).

ICMODE Yes

TURBO IC

NOTE:


TRUE(TRUE).

TURBOIC


NOTE:


ON(ON).

SW Yes





Batch Modification

Center

1 ULOCELL NodeB IC

NOTE:


TRUE(TRUE).

ICMODE Yes

TURBO IC

NOTE:


TRUE(TRUE).

TURBOIC


Run the NodeB MML command DSP ULOCELL to check whether TURBO IC is set to TRUE.1.

View the value of the VS.HSUPA.TurboIC.Number counter on the NodeB side. If it is not 0, Turbo IC has taken effect.2.


Using MML Commands


31 7/8/2015



Run the NodeB MML command MOD ULOCELL to modify the local cell. In this step, set TURBO IC to FALSE(FALSE).

NOTE:

If the WBBPa/WBBPb board is configured in the uplink resource group and Inter-board cancellation gain switch between the WBBPa and WBBPb boards is set to

FULL_IC, deactivating Turbo IC may cause UEs admitted on the WBBPa/WBBPb board to experience call drops.


//Deactivating Turbo IC

MOD ULOCELL: ULOCELLID=0, LOCELLTYPE=NORMAL_CELL, TURBOIC=FALSE;

Using the CME

NOTE:

When configuring the Turbo IC feature on the CME, perform a single configuration first, and then perform a batch modification if required.



Set parameters on the CME according to the operation sequence in Table 7-10. For instructions on how to perform the CME single configuration, see CME

Single Configuration Operation Guide.

1.




2.

Table 7-10 Configuring parameters on the CME

SN MO NE Parameter Name Parameter ID Configurable in CMEBatch Modification

Center

1 ULOCELL NodeB TURBO IC

NOTE:


TURBOIC Yes


Turbo IC performance can be monitored by the IC efficiency, uplink system capacity, and uplink load. The three items are measured by the counters listed in the

following table:



VS.HSUPA.Thruput.ROTMorX Cell Throughput of HSUPA Users Under Different Uu Interface Loads (X=3, 6, 7, 9, 10, 13,

or 20, or ALL)





VS.HSUPA.LoadOutput.X Number of Times That Cell Uu-lnterface Load Is Between Ydb to Zdb

(Ratio of the Actual RTWP in a Cell to the Reference RTWP) (X=0~25)

IC Efficiency

If HSUPA UL IC has not been activated before Turbo IC, the values of the VS.HSUPA.Ic.MeanEff and VS.HSUPA.Ic.MaxEff counters are not 0 after feature activation.

If HSUPA UL IC has been activated before Turbo IC, the values of the VS.HSUPA.Ic.MeanEff and VS.HSUPA.Ic.MaxEff counters increase after feature activation.


Turbo IC can increase the uplink capacity for a cell if the cell load is high. The uplink cell capacity can be monitored by the average number of online UEs in the cell or

the uplink cell throughput as described in the following:



UEs and a small number of HSUPA 2 ms TTI UEs co-exist in the cell.

When a large amount of HSUPA data needs to be transmitted, compare the values of VS.HSUPA.Thruput.ROTMorX and

VS.HSUPA.DataTtiNum.ROTMorX before and after feature activation to monitor the feature gains. The expected result is that

VS.HSUPA.Thruput.ROTMorX and VS.HSUPA.Thruput.ROTMorX divided by VS.HSUPA.DataTtiNum.ROTMorX increase after feature activation where X =

10LOG10(1/(1-MaxTargetUlLoadFactor( BSC6900 ,BSC6910 ))).

Uplink Load

If the uplink cell capacity remains unchanged, Turbo IC helps decrease the uplink cell load. Compare the value of VS.HSUPA.LoadOutput.X before and after feature


31 7/8/2015



activation to monitor the feature gains. The expected result is that the counter value decreases after feature activation.


None


After Turbo IC is enabled, an alarm indicating that Turbo IC cannot be used will be reported if any of the following occurs:

The license for Turbo IC has not been obtained.

HSUPA UL IC has not been activated.

No WBBPf board exists in the uplink resource group.

8 Parameters

Table 8-1 Parameter description

Parameter ID NE MML Command Feature ID Feature Name Description

ICMODE BTS3900 ADD ULOCELL

MOD ULOCELL

LST ULOCELL

WRFD-010691 HSUPA UL Interference

Cancellation

Meaning:Indicates

whether the cell supports

the Interference

Cancellation feature for

HSUPA services.

GUI Value

Range:FALSE(FALSE),

TRUE(TRUE)

Unit:None

Actual Value

Range:FALSE, TRUE

Default

Value:FALSE(FALSE)

TURBOIC BTS3900 ADD ULOCELL

MOD ULOCELL

LST ULOCELL

WRFD-150206 Turbo IC Meaning:Indicates

whether the cell supports

Turbo IC.

GUI Value

Range:FALSE(FALSE),

TRUE(TRUE)

Unit:None

Actual Value

Range:FALSE, TRUE

Default

Value:FALSE(FALSE)

INTERBOARDICSW BTS3900 SET NODEBICMODE

LST NODEBICMODE

WRFD-010691

WRFD-150206

WRFD-140202

HSUPA UL Interference

Cancellation

Turbo IC

Control Channel Parallel

Interference Cancellation

(Phase 2)

Meaning:Indicates the

inter-board cancellationgain switch between the

WBBPa/WBBPb board

and a board supporting

IC. This parameter is

valid when features

related to inter-board

cancellation take effect.

The features related to

inter-board cancellation

include HSUPA IC, Turbo

IC, and CCPIC Phase2.

GUI Value

Range:FULL_IC(All board

can share IC gain),

PART_IC(Old board can

not share IC gain)

Unit:None Actual Value

Range:FULL_IC,

PART_IC

Default

Value:PART_IC(Old

board can not share IC

gain)

MaxTargetUlLoadFactor BSC6900 ADD UCELLHSUPA

MOD UCELLHSUPA

WRFD-01061203

WRFD-140222

WRFD-140211

HSUPA Power Control

Adaptive Adjustment of

HSUPA Small Target

Retransmissions

Dynamic Target RoT

Adjustment

Meaning:The parameter

sets the target value of

the uplink load. HSUPA

power control on the

NodeB side keeps uplink

load close to the target

value. For details about

this parameter, see 3GPP


31 7/8/2015



Parameter ID NE MML Command Feature ID Feature Name Description

TS 25.433.

GUI Value Range:0~100

Unit:%

Actual Value

Range:0~100

Default Value:75

MaxTargetUlLoadFactor BSC6910 ADD UCELLHSUPA

MOD UCELLHSUPA

WRFD-01061203

WRFD-140222

WRFD-140211

HSUPA Power Control

Adaptive Adjustment of

HSUPA Small Target

RetransmissionsDynamic Target RoT

Adjustment

Meaning:The parameter

sets the target value of

the uplink load. HSUPA

power control on theNodeB side keeps uplink

load close to the target

value. For details about

this parameter, see 3GPP

TS 25.433.

GUI Value Range:0~100

Unit:%

Actual Value

Range:0~100

Default Value:75

SW BTS3900 SET

NODEBRESALLOCRULE

LST

NODEBRESALLOCRULE

None None Meaning:Indicates the

automatic cell

reestablishment switch.

GUI Value

Range:ON(ON),

OFF(OFF)Unit:None

Actual Value Range:ON,

OFF

Default Value:OFF(OFF)

CSUSERNUM BTS3900 SET

NODEBRESALLOCRULE

LST

NODEBRESALLOCRULE

None None Meaning:If the number of

CS users in the downlink

resource group is smaller

than or equal to the

threshold, cells are

reestablished

automatically.

GUI Value

Range:0~65535

Unit:None

Actual Value

Range:0~65535

Default Value:0

PSUSERNUM BTS3900 SET

NODEBRESALLOCRULE

LST

NODEBRESALLOCRULE

None None Meaning:If the number of

CELL_DCH PS users in

the downlink resource

group is smaller than or

equal to the threshold,

cells are reestablished

automatically.

GUI Value

Range:0~65535

Unit:None

Actual Value

Range:0~65535

Default Value:0

9 Counters

Table 9-1 Counter description

Counter ID Counter Name Counter Description NE Feature ID Feature Name

50331892 VS.HSUPA.Ic.MeanEff Average Efficiency of


(IC) in a Cell

NodeB Multi-mode: None

GSM: None

UMTS: WRFD-010691

WRFD-010210

WRFD-140202

WRFD-150206

LTE: None


Cancellation

Control Channel

Parallel Interference

Cancellation (CCPIC)

Control Channel



Turbo IC


31 7/8/2015



Counter ID Counter Name Counter Description NE Feature ID Feature Name

50331907 VS.CellFirstStageIcEff.Mean Average Efficiency of Stage

1 Interference Cancellation

(IC) in a Cell

The counter 50331907

VS.CellFirstStageIcEff.Mean

will be deleted and replaced

by 50332061

VS.FirstStageIcEff.Mean in

later versions. In current

version, both the counters

take effect butVS.CellFirstStageIcEff.Mean

is not recommended.


GSM: None

UMTS: WRFD-140202

LTE: None

Control Channel



50332061 VS.FirstStageIcEff.Mean Average value of stage 1

interface cancellation

efficiency


GSM: None

UMTS: WRFD-140202

LTE: None

Control Channel



50332385 VS.HSUPA.TurboIC.Number Average number of users

with Turbo IC enabled in a

cell


GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC

50341858 VS.HSUPA.Ic.MaxEff Maximum Efficiency of


(IC) in a Cell


GSM: None

UMTS: WRFD-010691

WRFD-010210

WRFD-140202

WRFD-150206

LTE: None


Cancellation

Control Channel

Parallel InterferenceCancellation (CCPIC)

Control Channel



Turbo IC

50341867 VS.CellFirstStageIcEff.Max Maximum Efficiency of

Stage 1 Interference

Cancellation (IC) in a Cell

The counter 50341867

VS.CellFirstStageIcEff.Max

will be deleted and replaced

by 50342048

VS.FirstStageIcEff.Max in

later versions. In current

version, both the counters

take effect butVS.CellFirstStageIcEff.Max

is not recommended.


GSM: None

UMTS: WRFD-140202

LTE: None

Control Channel



50341870 VS.HSUPA.TTI2msUserNumber.0 Average number of 2 ms

TTI HSUPA users at a rate

of below 150 kbit/s in a cell


GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC



in the range of [150

kbit/s,700 kbit/s) in a cell


GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC






GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC






GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC






GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC






GSM: None

UMTS: WRFD-150206

LTE: None

Turbo IC


31 7/8/2015



10 Glossary

For the acronyms, abbreviations, terms, and definitions, see Glossary .

11 Reference Documents

HSUPA Feature Parameter Description1.

HSUPA Time Division Scheduling Feature Parameter Description2.

Power Control Feature Parameter Description3.

License Management Feature Parameter Description4.
