adaptive icic(eran tdd 7.0_01)

8/10/2019 Adaptive Icic(Eran Tdd 7.0_01)

http://slidepdf.com/reader/full/adaptive-iciceran-tdd-7001 1/62

eRAN TDD

Adaptive ICIC Feature Parameter

Description

Issue 01

Date 2014-05-20

HUAWEI TECHNOLOGIES CO., LTD.



Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,

and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 01 (2014-05-20) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

i

http://www.huawei.com/



Contents

1 About This Document..................................................................................................................1

1.1 Scope..............................................................................................................................................................................1

1.2 Intended Audience..........................................................................................................................................................1

1.3 Change History...............................................................................................................................................................1

2 Overview.........................................................................................................................................4

3 Technical Description...................................................................................................................7

3.1 Concepts.........................................................................................................................................................................7

3.1.1 CCU and CEU.............................................................................................................................................................7

3.1.2 ICIC Working Mode....................................................................................................................................................7

3.2 Principles......................................................................................................................................................................10

3.2.1 Starting an Optimization Task...................................................................................................................................11

3.2.2 Identifying Areas with High Interference and Heavy Load......................................................................................12

3.2.3 Configuring and Optimizing ICIC Working Modes and Edge Band Modes............................................................12

4 Related Features...........................................................................................................................14

5 Network Impact...........................................................................................................................16

6 Engineering Guidelines.............................................................................................................17

6.1 When to Use Adaptive ICIC.........................................................................................................................................17

6.2 Required Information...................................................................................................................................................17

6.3 Planning........................................................................................................................................................................18

6.4 Deployment..................................................................................................................................................................18

6.4.1 Inventory-based Mode...............................................................................................................................................18

6.4.1.1 Process....................................................................................................................................................................18

6.4.1.2 Requir ements..........................................................................................................................................................19

6.4.1.3 Data Preparation.....................................................................................................................................................20

6.4.1.4 Precautions..............................................................................................................................................................25

6.4.1.5 Initial Configuration...............................................................................................................................................25

6.4.1.6 Activation Observation...........................................................................................................................................28

6.4.1.7 Optimization Advice Confirmation and Delivery..................................................................................................29

6.4.1.8 Reconfiguration......................................................................................................................................................31

6.4.1.9 Deactivation............................................................................................................................................................32

eRAN TDD

Adaptive ICIC Feature Parameter Description Contents



ii



6.4.2 Evolution-based Mode...............................................................................................................................................32

6.4.2.1 Process....................................................................................................................................................................32

6.4.2.2 Requirements..........................................................................................................................................................33

6.4.2.3 Data Preparation.....................................................................................................................................................33

6.4.2.4 Precautions..............................................................................................................................................................37

6.4.2.5 Initial Configuration...............................................................................................................................................37

6.4.2.6 Activation Observation...........................................................................................................................................38

6.4.2.7 Reconfiguration......................................................................................................................................................40

6.4.2.8 Deactivation............................................................................................................................................................41

6.5 Performance Monitoring...............................................................................................................................................41

6.6 Parameter Optimization................................................................................................................................................42

6.6.1 eCoordinator Parameters...........................................................................................................................................42

6.6.2 eNodeB Parameters...................................................................................................................................................43

6.7 Troubleshooting............................................................................................................................................................43

6.7.1 Inventory-based Mode...............................................................................................................................................43

6.7.2 Evolution-based Mode...............................................................................................................................................45

7 Parameters.....................................................................................................................................46

8 Counters........................................................................................................................................49

9 Glossary.........................................................................................................................................57

10 Reference Documents...............................................................................................................58

eRAN TDD

Adaptive ICIC Feature Parameter Description Contents



iii



1 About This Document

1.1 Scope

This document describes adaptive inter-cell interference coordination (ICIC) , including its

technical principles, related features, network impact, and engineering guidelines.

This document describes only adaptive ICIC, which corresponds to the optional feature

TDLOFD-060201 Adaptive Inter-Cell Interference Coordination.

Any managed objects (MOs), parameters, alarms, or counters described herein correspond to

the software release delivered with this document. Any future updates will be described in the

product documentation delivered with future software releases.

This document applies only to LTE TDD. Any "LTE" in this document refers to LTE TDD, and

"eNodeB" refers to LTE TDD eNodeB.

1.2 Intended Audience

This document is intended for personnel who:

l Need to understand inventory management

l Work with Huawei LTE 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:

l Feature change

Changes in features of a specific product version

l Editorial change

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

eRAN TDD

Adaptive ICIC Feature Parameter Description 1 About This Document



1



eRAN TDD 7.0 01 (2014-05-20)

This issue includes the following changes.

ChangeType

Change Description Parameter Change

Feature

change

None None

Editorial

change

None None

eRAN TDD 7.0 Draft A (2014-04-10)

Compared with Issue 01 (2013-09-30) of eRAN TDD 6.0, Draft A (2014-04-10) of eRAN TDD

7.0 includes the following changes.

ChangeType


Feature

change

Changed the name of Huawei mobile element

management system from M2000 to U2000.

None

Added a new mode for deploying adaptive

ICIC. For details, see 6.4.2 Evolution-based

Mode.

Added the parameters related

to the following new

commands on theeCoordinator:

l ADD AICICCELL

l ADD AICIC

For details, see ECO6910

MML Command Reference in

ECO6910 Product

Documentation.

Added a troubleshooting method for the

evolution-based mode. For details, see 6.7.2

Evolution-based Mode.

Added the optimization of eNodeB

parameters. For details, see 6.6.2 eNodeB

Parameters.

None

Changed the alarm IDs from ALM-51153,

ALM-51301, and ALM-51304 to

ALM-20906, ALM-20741, and ALM-22746,

respectively. For details, see 6.4.1.2

Requirements, 6.4.1.6 Activation

Observation, and 6.7.1 Inventory-based

Mode.

None

Added a new type of ICIC working mode:

Type-2 Reuse3 mode. For details, see

Reuse3 in 3.1.2 ICIC Working Mode.

None

eRAN TDD




2



ChangeType


Editorial

change

Revised 2 Overview. None

Revised 3.2.1 Starting an Optimization

Task .

None

Revised 3.1.2 ICIC Working Mode. None

eRAN TDD




3



2 Overview

ICIC works with scheduling and power control to mitigate inter-cell interference. ICIC divides

the frequency band of a cell into center and edge bands and classifies users into cell center users

(CCUs) and cell edge users (CEUs). With ICIC, the eNodeB schedules CCUs and CEUs on

different cell bands and allocates different power to CCUs and CEUs.

Huawei eNodeBs support static and adaptive ICIC. Adaptive ICIC differs from static ICIC in

the following ways:

l Static ICIC requires manual configuration of ICIC switches and edge band modes. This

configuration method cannot adapt to changes in UE type (CCU or CEU) distribution and

cell load.

l Adaptive ICIC determines whether to enable ICIC in an area based on inter-cell interference

and cell load. In addition, adaptive ICIC automatically configures edge band modes andoptimizes ICIC working modes and edge band modes based on load changes.

This document describes only adaptive ICIC, which corresponds to the optional feature

TDLOFD-060201 Adaptive Inter-Cell Interference Coordination.

Huawei ECO6910, whose network element (NE) type is eCoordinator, serves as a coordinator

on a radio network and provides a platform for implementing adaptive ICIC.

With adaptive ICIC, eNodeBs independently report cell information to the ECO6910, and then

the ECO6910 uses the reported information to configure and optimize ICIC working modes and

edge band modes. Adaptive ICIC is implemented jointly by the U2000, ECO6910, and eNodeBs.

Figure 2-1 shows the network architecture for adaptive ICIC.

eRAN TDD

Adaptive ICIC Feature Parameter Description 2 Overview



4



Figure 2-1 Network architecture for adaptive ICIC

In Figure 2-1:

l The blue, purple, and yellow areas indicate different cells under the same eNodeB.

l The black lines illustrate the connections between the eNodeBs and the U2000 before

adaptive ICIC is enabled.

l The red lines illustrate the connections between the ECO6910 and the eNodeBs and U2000

after adaptive ICIC is enabled.

When the ECO6910 is used to implement adaptive ICIC, the ECO6910, eNodeBs, and U2000

must be connected as illustrated by the black and red lines in Figure 2-1.

Table 2-1 describes the functions of NEs involved in adaptive ICIC.

Table 2-1 Functions of NEs involved in adaptive ICIC

NE Function

UE l Measures the reference signal received power (RSRP) of the

serving cell and neighboring cells.

l Reports the measurement results to the eNodeB.

eNodeB l Reports cell information (including inter-cell interference data

and cell edge load data) to the ECO6910.

l Updates the ICIC working modes and edge band modes for

cells based on the configurations delivered by the ECO6910.

eRAN TDD




5



NE Function

ECO6910 l Maintains network-level interference data and cell edge load

data.

l Implements the adaptive ICIC algorithm by configuring ICICworking modes and edge band modes based on cell

information reported by eNodeBs.

l Delivers the configurations to eNodeBs.

U2000 l Serves as a platform for enabling and disabling adaptive ICIC.

l Displays the status of adaptive ICIC.

LMT l Serves as a supplementary platform for enabling and disabling

adaptive ICIC.

l Displays the status of adaptive ICIC.

eRAN TDD




6



3 Technical Description

3.1 Concepts

3.1.1 CCU and CEU

Similar to static ICIC, adaptive ICIC also classifies users into CCUs and CEUs. For details about

how to identify CCUs and CEUs, see ICIC Feature Parameter Description.

CCUs and CEUs are scheduled as follows:

l Band allocation

– eNodeBs preferentially schedule CCUs on the center band. If there are remaining

frequency resources on the center band, eNodeBs can also schedule CEUs on the center

band.

– eNodeBs preferentially schedule CEUs on the edge band. If there are remaining

frequency resources on the edge band and CCUs have a higher scheduling priority on

the edge band than CEUs, eNodeBs can also schedule CCUs on the edge band.

l Power allocation

eNodeBs allocate higher power to CEUs and lower power to CCUs.

3.1.2 ICIC Working ModeAdaptive ICIC works in three modes: Reuse1, Reuse3, and Reuse6. The division of a cell band

into center and edge bands varies according to the ICIC working mode. When the cell bandwidth

is changed, the ECO6910 reconfigures the ICIC working mode in the next optimization period.

Reuse1

In Reuse1 mode, the cell band is not divided into center and edge bands. UEs are not classified

into CCUs or CEUs. All UEs share the entire cell band. In the downlink, all UEs use the same

power to receive signals. In the uplink, the transmit power of each UE is determined by the

uplink power control algorithm. For details about power control, see Power Control Feature

Parameter Description.

eRAN TDD

Adaptive ICIC Feature Parameter Description 3 Technical Description



7



All cells initially work in Reuse1 mode. Some cells can work only in Reuse1 mode when meeting

all the following conditions:

l These cells have the same bandwidth but different frequencies or have the same frequency

but different bandwidths.

l The bandwidths of these cells are 1.4 MHz or 3 MHz.

Reuse3

Reuse3 mode is classified into Type-1 and Type-2, which are selected based on cell load.

In Type-1 Reuse3 mode, 1/3 of the cell band is configured as the edge band, and the remaining

of the cell band is configured as the center band. As shown in Figure 3-1, the edge bands of

different cells do not overlap each other.

Figure 3-1 Type-1 Reuse3 mode

There are three edge band modes in Type-1 Reuse3 mode: Pattern3-1, Pattern3-2, and Pattern3-3.

The three modes correspond to low, medium, and high sub-bands, respectively. In each mode,

the edge band occupies 1/3 of the cell band. For example, if a cell uses Pattern3-1, the lowest

1/3 of the cell band works as the edge band. Some cells cannot work in Reuse3 mode when

meeting all the following conditions:

l These cells have the same bandwidth but different frequencies or have the same frequency

but different bandwidths.

l The bandwidths of these cells are 1.4 MHz or 3 MHz.

In Type-2 Reuse3 mode, the edge bands of different cells partially overlap, as shown in Figure

3-2. This mode allows CEUs to use wider bands than Type-1 Reuse3 mode.

eRAN TDD




8



Figure 3-2 Type-2 Reuse3 mode

There are also three edge band modes in Type-2 Reuse3 mode: Pattern3-1, Pattern3-2, and

Pattern3-3. Each pattern occupies 2/3 of the cell band. For example, if a cell uses Pattern3-1,

the lowest 2/3 of the cell band works as the edge band.

Corresponding to the two types of Reuse3 mode, the eCoordinator can work in two modes,

dynamic mode and static mode:

l In dynamic mode, the eCoordinator instructs cells to work in Type-1 Reuse3 mode. It

periodically performs self-configuration and self-optimization of the ICIC working modes

and edge band modes.

l In static mode, the eCoordinator instructs cells to work in Type-2 Reuse3 mode. It

automatically performs self-configuration of the ICIC working modes and edge band modes

but does not perform self-optimization.

Operators can manually configure the working mode of the eCoordinator. However, if the

eCoordinator is configured to work in static mode, it can also automatically transit to dynamic

mode in the case of heavy load.

Reuse6

In Reuse6 mode, 1/6 of the cell band is configured as the edge band, and the remaining 5/6 of

the cell band is configured as the center band. Figure 3-3 shows the Reuse6 mode.

eRAN TDD




9



Figure 3-3 Reuse6 mode

As shown in Figure 3-3, there are six edge band modes (Pattern6-1 to Pattern6-6) in Reuse6

mode. The six modes correspond to six sub-bands in ascending order of frequency. In each mode,

the edge band occupies 1/6 of the cell band. For example, if a cell uses Pattern6-6, the highest

1/6 of the cell band works as the edge band.

LTE systems use single carrier frequency division multiple access (SC-FDMA) in the uplink.

Therefore, UEs can work only on continuous uplink bands. To prevent the uplink band from

being too fragmented, a cell cannot use the Reuse6 mode in the uplink. In addition, to ensuresufficient downlink bandwidth, cells with a bandwidth of 1.4 MHz, 3 MHz, or 5 MHz cannot

work in Reuse6 mode in the downlink.

3.2 Principles

After adaptive ICIC is activated, the ECO6910 configures and optimizes the ICIC working

modes and edge band modes based on inter-cell interference and cell load. Figure 3-4 shows

the working principles of adaptive ICIC.

eRAN TDD




10



Figure 3-4 Working principles of adaptive ICIC

3.2.1 Starting an Optimization Task

You can select all or some cells under the ECO6910 or under a specified eNodeB as the area for

which adaptive ICIC is to be activated, and determine whether adaptive ICIC takes effect in

uplink, downlink, or both.

Adaptive ICIC can be activated and deactivated using the U2000 or MML commands on the

ECO6910 LMT. After adaptive ICIC is activated, the ECO6910 identifies areas with high

interference and heavy load based on cell load and inter-cell interference. Based on the

identification results, the ECO6910 configures and optimizes the ICIC working modes and edge

band modes.

eRAN TDD




11



3.2.2 Identifying Areas with High Interference and Heavy Load

The ECO6910 identifies areas with high interference and heavy load based on cell load and

inter-cell interference in each optimization period. Based on the identification results, the

ECO6910 configures and optimizes the ICIC working modes and edge band modes.

Areas with High Interference

The RSRP of the serving cell and the RSRP of the neighboring cells are used to determine

whether an area has high interference. The procedure for identifying areas with high interference

is as follows:

1. UEs send ICIC event A3/A6 measurement reports to the eNodeBs. Each report includes

the RSRP values of a UE's serving cell and neighboring cells. For details about events A3

and A6, see ICIC Feature Parameter Description.

2. The eNodeBs calculate unidirectional interference weights based on the reported RSRP

values, record them in cell-level intra-frequency neighboring relation tables (NRTs), and

periodically report the NRTs to the ECO6910.

NOTE

A unidirectional interference weight is the weight of the interference generated from one cell to

another cell.

3. The ECO6910 generates a network-level NRT based on the cell-level intra-frequency

NRTs, calculates bidirectional interference weights based on unidirectional interference

weights, and identifies areas with high interference.

Areas with Heavy Load

The eNodeBs report cell load information to the ECO6910. The cell load information includes

the average physical resource block (PRB) usage and the average number of scheduled UEs.

The ECO6910 identifies areas with heavy load based on the cell load information. If the ratio

of the number of heavily loaded cells to the total number of cells in an area with high interference

has reached a certain value, the ECO6910 regards this area as heavily loaded. Otherwise, the

ECO6910 regards this area as lightly loaded.

3.2.3 Configuring and Optimizing ICIC Working Modes and EdgeBand Modes

Self-Configuration

The ECO6910 periodically evaluates cell load and inter-cell interference, based on which it

configures the ICIC working modes and edge band modes.

l For cells in an area with high interference and heavy load, the ECO6910 sets the ICIC

working mode to Reuse3 and configures the edge band mode for each cell. If two cells have

the same edge band mode, the ECO6910 checks whether the bidirectional interference

weights have reached a specific threshold.

– If so, the ECO6910 changes the ICIC working modes of the two cells to Reuse6 and

configures different edge band modes for the two cells.

– If not, the ICIC working modes and edge band modes of the two cells remain unchanged.

eRAN TDD




12



l For cells in an area with high interference and light load, the ECO6910 sets the ICIC

working mode to Reuse1.

l For cells in an area without high interference, the ECO6910 also sets the ICIC working

mode to Reuse1.

Self-Optimization

Inter-cell interference changes with cell load and UE type distribution. Therefore, adaptive ICIC

periodically optimizes the ICIC working modes and edge band modes. After the ICIC working

mode is determined in an optimization period, the ECO6910 checks the eNodeB-reported

average number of PRBs used for CEUs. Based on this information, the ECO6910 determines

whether to reconfigure the edge band mode for cells in Reuse3 and Reuse6 modes every 5

seconds.

l If the average number of PRBs used for CEUs in a cell is less than 1/6 of the entire cell

band, the ECO6910 sets the ICIC working mode of the cell to Reuse6 and the cell shrinks

its edge band.

l If the average number of PRBs used for CEUs in a cell is greater than 1/3 of the entire cell

band, the cell's neighboring cells shrink their edge bands and the cell expands its edge band

on the shrunk edge bands. If the edge bands of neighboring cells are not actually shrunk,

the cell has a fixed edge band that is 1/3 of the entire cell band.

l If the average number of PRBs used for CEUs is greater than 1/6 and less than 1/3 of the

entire cell band, the ICIC working mode and edge band mode of the cell remain unchanged.

eRAN TDD




13



4 Related Features

Prerequisite FeaturesAdaptive ICIC requires the following features related to scheduling or power control:

l TDLBFD-002025 Basic Scheduling

l TDLOFD-001015 Enhanced Scheduling

l TDLOFD-00101502 Dynamic Scheduling

l TDLBFD-002026 Uplink Power Control

l TDLBFD-002016 Dynamic Downlink Power Allocation

With features related to scheduling, eNodeBs schedule the CEUs in a cell on the edge band of

this cell, and therefore mitigate inter-cell interference in the frequency domain. With featuresrelated to power control, eNodeBs allocate appropriate power resources to CCUs and CEUs,

further reducing inter-cell interference.

Mutually Exclusive Features

Adaptive ICIC cannot be used with the following static ICIC features:

l TDLBFD-00202201 Downlink Static Inter-Cell Interference Coordination

l TDLBFD-00202202 Uplink Static Inter-Cell Interference Coordination

lTDLOFD-002008 Adaptive SFN/SDMA

l TDLOFD-001082 Inter-BBU Adaptive SFN/SDMA

It is recommended that adaptive ICIC not be used together with static ICIC because of the

following reasons:

l If static ICIC is enabled on a network where adaptive ICIC has been enabled, static ICIC

will not work.

l If adaptive ICIC is enabled on a network where static ICIC has been enabled, static ICIC

will be automatically disabled. When the ECO6910 collects network information and

determines whether ICIC takes effect, the ICIC working mode of the cell is changed to

Reuse1. Consequently, the band on which UEs are scheduled and the power allocated to

UEs vary, which causes UE throughput fluctuation and deteriorates user experience. If UE

eRAN TDD

Adaptive ICIC Feature Parameter Description 4 Related Features



14



throughput is too low during handovers or radio bearer setup, the handover success rate

may decrease and the service drop rate may increase.

Impacted Features

Adaptive ICIC impacts scheduling and power control as follows:

l Adaptive ICIC affects scheduling in both the uplink and downlink in the following ways:

– Adaptive ICIC provides edge band modes and UE types (CCU or CEU) for scheduling.

– With adaptive ICIC, eNodeBs schedule the CEUs of a cell on the edge band and schedule

CCUs preferentially on the center band. The eNodeBs can also schedule CCUs on the

entire cell band.

l Adaptive ICIC provides UE type information for downlink power control.

Downlink power control allocates appropriate power resources to CCUs and CEUs based

on the UE types and the PA values configured for CCUs and CEUs. In Reuse1 mode, all

UEs use the same PA value. For details about the description and configuration of PA, see

Power Control Feature Parameter Description.

eRAN TDD

Adaptive ICIC Feature Parameter Description 4 Related Features



15



5 Network Impact

System CapacityAdaptive ICIC increases the throughput of CEUs by reducing inter-cell inter-CEU interference.

Adaptive ICIC reduces the system capacity because the downlink transmit power of CCUs is

reduced. The decrease in system capacity depends on the UE type distribution in the cell.

Generally, the system capacity does not decrease by more than 5%.

Network Performance

Adaptive ICIC enhances network coverage by increasing the throughput of CEUs.

Adaptive ICIC increases the number of signaling messages over the air interface because:

l Adaptive ICIC requires that UEs detect and report the RSRP values of neighboring cells

in the event A3 or A6 measurement report for the eNodeB to distinguish between CEUs

and CCUs in a cell.

l The eNodeB sends UEs the RRC Connection Reconfiguration message, which contains the

setting of UE transmit power.

eRAN TDD

Adaptive ICIC Feature Parameter Description 5 Network Impact



16



6 Engineering Guidelines

6.1 When to Use Adaptive ICIC

It is good practice to activate adaptive ICIC when the intra-frequency cells on an LTE network

experience intra-frequency interference. Adaptive ICIC does not affect ongoing services and

therefore can be activated any time.

Once adaptive ICIC has been activated, the ECO6910 will configure and optimize the ICIC

working modes and edge band modes for cells in an area with high interference and heavy load

when the interference and cell load reach their respective thresholds.

Adaptive ICIC takes priority over static ICIC. If adaptive ICIC is activated, static ICIC on theeNodeB will not work, and the related operations (such as the switch and mode configurations)

no longer take effect. Static ICIC can be enabled on the eNodeB only when adaptive ICIC is

deactivated.

Adaptive ICIC takes effect on a per cell basis and applies to multi-operator core network

(MOCN) and RAN sharing scenarios.

6.2 Required Information

Before activating adaptive ICIC on an LTE network, collect the key performance indicators

(KPIs) of the LTE network.

The following eNodeB counters are involved in adaptive ICIC:

1. Counters related to network load: average number of downlink CEUs in a cell, average

number of uplink CEUs in a cell, average number of used uplink PRBs, and average number

of used downlink PRBs

2. Counters related to interference: number of times MCS index n is scheduled on the PDSCH

(where n ranges from 0 to 31), number of times MCS index n is scheduled on the PUSCH

(where n ranges from 0 to 31), and number of reports with a wideband CQI of n (where n

ranges from 0 to 15)

For the IDs and descriptions of these counters, see 8 Counters.

eRAN TDD

Adaptive ICIC Feature Parameter Description 6 Engineering Guidelines



17



6.3 Planning

RF Planning

None

Network Planning

The neighboring cells in an optimization zone must use the same frequency and bandwidth and

the cell bandwidth in an optimization zone must be greater than or equal to 5 MHz. If the

neighboring cells use different frequencies or bandwidths, adaptive ICIC does not take effect

on the neighboring cells and the neighboring cells only work in Reuse1 mode.

Hardware Planning The ECO6910 and U2000 must be deployed.

6.4 Deployment

Adaptive ICIC can be deployed in inventory-based mode or evolution-based mode. Both of the

two modes are supported by ECO6910 V100R003.

The inventory-based mode applies in the following scenarios:

l Use ECO6910 V100R002 for deploying and maintaining adaptive ICIC.

l Use ECO6910 V100R003 for deploying and maintaining adaptive ICIC, where ECO6910V100R003 is upgraded from ECO6910 V100R002 but the inventory-based mode has not

been switched to the evolution-based mode.

The evolution-based mode applies in the following scenarios:

l Use ECO6910 V100R003 or later for deploying and maintaining adaptive ICIC.

l Use ECO6910 V100R003 for deploying and maintaining adaptive ICIC, where ECO6910

V100R003 is upgraded from ECO6910 V100R002 and the inventory-based mode has been

switched to the evolution-based mode.

NOTE

l In inventory-based mode, both the U2000 and the eCoordinator LMT can be used for deploying andmaintaining adaptive ICIC. In evolution-based mode, only the eCoordinator LMT can be used for

deploying and maintaining adaptive ICIC.

l If the eCoordinator LMT is used, MML commands are different in two modes.

The inventory-based mode will not be supported after ECO6910 V100R003. Therefore, it is

recommended that the inventory-based mode be switched to the evolution-based mode.

6.4.1 Inventory-based Mode

6.4.1.1 Process

Figure 6-1 outlines the procedure for deploying adaptive ICIC.

eRAN TDD




18



Figure 6-1 Procedure for deploying adaptive ICIC

6.4.1.2 Requirements

Hardware

l eNodeBs are available. Adaptive ICIC applies only to macro cells in eRAN6.0 or later,

including:

– LTE macro cells served by single-mode base stations, which are DBS3900 LTE,

BTS3900 LTE, BTS3900A LTE, BTS3900L LTE, and BTS3900AL LTE.

– LTE macro cells served by multi-mode base stations, which are DBS3900, BTS3900,

BTS3900A, BTS3900L, and BTS3900AL.

l The ECO6910 has been installed, initially configured, and commissioned. The ECO6910

is available and connected to eNodeBs.

NOTE

For details about how to install, initially configure, and commission the ECO6910, see ECO6910

Installation Guide, ECO6910 Initial Configuration Guide, and ECO6910 Commissioning Guide,

respectively.

System ConfigurationsIntra-frequency neighbor relationships are configured between the cells in an optimization zone.

License

Operators have purchased and activated the following licenses on the ECO6910:

l ECO6910 Basic Software-LTE TDD (cell)

l Adaptive Inter-Cell Interference Coordination-LTE TDD (cell)

Adaptive Inter-Cell Interference Coordination-LTE TDD (cell) limits the total number of cells

that can be optimized by adaptive ICIC. If the number of selected cells exceeds the licensed

limit, the eCoordinator reports ALM-20741 Configuration Data Exceeding License Capacity.

eRAN TDD




19



6.4.1.3 Data Preparation

This section describes the data that you need to collect for setting parameters. Required data is

data that you must collect for all scenarios. Collect scenario-specific data when necessary for a

specific feature deployment scenario.

There are three types of data sources:

l Network plan (negotiation not required): Parameters are planned and set by operators.

l Network plan (negotiation required): Parameters are planned by operators and negotiated

with the EPC or peer transmission equipment.

l User-defined: Parameters are set as required by users.

Required Data

None

Scenario-specific Data

When configuring adaptive ICIC, set the following parameters:

l Parameters for an optimization zone and optimization objects. For details, see Table 6-1.

l Parameters for adaptive ICIC. For details, see Table 6-2.

l Parameters for an optimization task. For details, see Table 6-3.

Table 6-1 Parameters for an optimization zone and optimization objects

ParameterName

Parameter ID Setting Notes Data Source

Optimization

Zone ID

OptiZoneId This parameter uniquely

identifies an optimization zone

on the eCoordinator.

User-defined

Optimization

Zone Name

OptiZoneName This parameter specifies the

optimization zone name.

User-defined

Optimization

Object Type

OptiObjType This parameter specifies the

type of optimization objects.

When this parameter is set toECO(ECO), the optimization

objects are all cells managed

by the eCoordinator.

When this parameter is set to

NE(NE), the optimization

objects are all cells under the

corresponding eNodeB.

When this parameter is set to

CELL(CELL), the

optimization object is a

specified cell.

Network plan

(negotiation not

required)

eRAN TDD




20



ParameterName


Optimization

Object ID

OptiObjId This parameter uniquely

identifies an optimizationobject.

When Optimization Object

Type is set to NE(NE), set this

parameter to NeIndex so that

you can run the LST NE

command to query the indexes

of all NEs managed by the

eCoordinator.

When Optimization Object

Type is set to CELL(CELL),

set this parameter toCellIndex so that you can run

the LST LTECELL command

to query the indexes of all LTE

cells managed by the

eCoordinator.

Network plan

(negotiation notrequired)

Optimization

Object RAT

RAT This parameter indicates the

RAT used in a cell to be

optimized. This parameter is

available only when

Optimization Object Type is

set to CELL(CELL). Set this parameter to LTE.

Network plan

(negotiation not

required)

Table 6-2 Parameters for adaptive ICIC

ParameterName


Optimization

Type

OptiType You are advised to set this

parameter to DL(DownLink) so

that cell edge bands are optimizedonly in the downlink, because

traffic is heavy in the downlink

and light in the uplink.

Network plan

(negotiation not

required)

eRAN TDD




21



ParameterName


Optimization

Period

OptiPeriod This parameter specifies the

optimization period for adaptiveICIC. The system implements

optimization each time the

optimization period arrives.

Set this parameter to Day_1(1

Day) or longer if more than 2000

cells are to be optimized. Set this

parameter to Hour_1(1 Hour) or

longer if 100 to 2000 cells are to

be optimized. Set this parameter

to Min_15(15 Minutes) if 20 to

99 cells are to be optimized. Set

this parameter to Min_3(3

Minutes) if less than 20 cells are

to be optimized. This shortens the

duration from the time when

adaptive ICIC is started to the

time when the ECO6910

generates optimization advice.

Network plan

(negotiation notrequired)

Table 6-3 Parameters for an optimization task

ParameterName

ParameterID

GUIParameterName onthe U2000

Setting Notes DataSource

Optimizatio

n Feature

Index

OptiFeature

Id

Feature ID This parameter uniquely

specifies the ID of an

optimization task on the

eCoordinator.

User-

defined

Optimizatio

n Feature Name

OptiName Service

Name

This parameter specifies the

type of an optimization task.

User-

defined

Feature

Type

FeatureType Service Type This parameter specifies the

type of an optimization task. If

MML commands are used, set

this parameter to AICIC

(AICIC). If the U2000 is used,

select LTE Adaptive ICIC.

Network

plan

(negotiatio

n not

required)

eRAN TDD




22



ParameterName

ParameterID



Optimize

Cell Type

OptiCellTyp

e

Cell Type This parameter specifies the

type of a cell to be optimized.

l To optimize only FDD cells,

set this parameter to FDD.

l To optimize only TDD cells,

set this parameter to TDD.

l To optimize both FDD and

TDD cells, set this parameter

to BOTH in the related

MML commands or select

Both on the U2000.

Network

plan

(negotiatio

n not

required)

Optimizatio

n Parameter

Template

ID

ParaId Parameter

Policy

This parameter uniquely


optimization parameter

template. The optimization

parameter template is added by

running the ADD

AICICOPTIPARA command.

Network

plan

(negotiatio

n not

required)

Optimizatio

n Zone ID

OptiZoneId Optimizatio

n Zone

This parameter uniquely


optimization zone. Theoptimization zone is added by

running the ADD OPTIZONE

command.

Network

plan

(negotiation not

required)

Feature

Switch

EnableSwitc

h

Start

Optimizatio

n Service

This parameter specifies

whether to enable an

optimization task.

l To activate adaptive ICIC,

set this parameter to ON.

l To deactivate adaptive ICIC,

set this parameter to OFF.

Network

plan

(negotiatio

n not

required)

eRAN TDD




23



ParameterName

ParameterID



Optimizatio

n

Implementa

tion Mode

ImplementM

ode

Execution

Mode

This parameter specifies the

mode for implementing the

optimization advice.

l When this parameter is set to

MANUAL, the optimization

advice is implemented only

after you have confirmed it.


NOW, the optimization

advice is implemented

immediately after it isgenerated.


TIMER , the optimization

advice is automatically

implemented at the

scheduled time.

The ECO6910 generates

optimization advice on

reconfiguration of adaptive

ICIC working mode based on

cell load and inter-cellinterference in an optimization

period. If optimization advice is

not delivered to eNodeBs in

time, the reconfigured ICIC

working mode will not adapt to

cell load and inter-cell

interference in an optimization

period, weakening the

optimization effect of adaptive

ICIC. The value NOW is

recommended because the ICICworking mode can adapt quickly

to cell load and inter-cell

interference.

If OptiPeriod is set to Min_3(3

Minutes), the optimization

advice will be frequently

updated on the U2000, which

makes it difficult to manually

deliver the optimization advice.

To address this issue, set

Network

plan

(negotiatio

n not

required)

eRAN TDD




24



ParameterName

ParameterID



Optimization Implementation

Mode to NOW.

Optimizatio

n Delivery

Time

ImplementS

chedule

Schedule

Time

This parameter indicates the

time that the optimization

advice is scheduled for delivery.

This parameter is valid when

Optimization Implementation

Mode is set to TIMER . The

generated optimization advice is

delivered only at the scheduled

time.

Network

plan

(negotiatio

n not

required)

6.4.1.4 Precautions

None

6.4.1.5 Initial Configuration

Adaptive ICIC can be initially configured using the U2000 or using MML commands on the

ECO6910 LMT. The U2000 is recommended because the NEs to be managed by the ECO6910

can be added only on the U2000 client.

Using the U2000

Before initially configuring adaptive ICIC, upload the ECO6910 mediation software to the

U2000 server. To initially configure adaptive ICIC on the U2000 client, perform the following

operations:

Step 1 Select NEs to be managed by the ECO6910.

1. Log in to the U2000 client. Choose Configuration > eCoordinator Settings in the

traditional style, or double-click Configuration on the Application Center tab page and

then choose Settings > eCoordinator Settings in the application style.

The eCoordinator Settings window is displayed.

2. Click the NE Settings tab page in the eCoordinator Settings window. Choose the target

eCoordinator in the navigation tree and click , or right-click the eCoordinator and choose

Modify from the shortcut menu.

The Setting dialog box is displayed, as shown in Figure 6-2.

eRAN TDD




25



Figure 6-2 Setting dialog box

3. Under Available NEs, select the NEs to be managed by the ECO6910 and add them to

Selected NEs. Click Next.

4. Specify User Name and Password, and then click OK .

5. Click to update the list of NEs to be managed by the ECO6910.

Step 2 Specify the zone to be optimized by the ECO6910.

1. Click the Zone Settings tab page in the eCoordinator Settings window. Click .

The Add Zone dialog box is displayed, as shown in Figure 6-3.

eRAN TDD




26



Figure 6-3 Add Zone dialog box

NOTE

Cells under a newly added NE will be displayed under Available Objects 10 minutes after the NE

is added.

2. In the Add Zone dialog box, specify Zone Name. Select the optimization objects under

Available Objects, add them to Selected Objects, and click OK .

3. Click to update the optimization zones.

Step 3 Set the optimization parameters.

1. On the U2000 client, choose SON > LTE Adaptive ICIC in the traditional style, or double-

click SON on the Application Center tab page and then choose Self Optimization > LTE

Adaptive ICIC in the application style.

The LTE Adaptive ICIC window is displayed.

2. On the Parameter Policy tab page, select the target eCoordinator and click to create

optimization parameters. Set the parameters and then click Save. For details about the

parameters, see Table 6-2.

Step 4 Create an optimization task.

l Click the Optimization Management tab page in the LTE Adaptive ICIC window. Click

to create an optimization task.

The Create Optimization Service dialog box is displayed.

eRAN TDD




27



l Set the parameters and click OK in the Create Optimization Service dialog box. For

parameter details, see Table 6-3.

----End

Using MML Commands

To initially configure adaptive ICIC using MML commands, add NEs to be managed by the

ECO6910 on the U2000 client and then log in to the ECO6910 LMT to perform the following

operations:

NOTE

For details about how to add NEs to be managed by the ECO6910 on the U2000 client, see Step 1 in Using

the U2000.

Step 1 Run the ADD OPTIZONE command to add an optimization zone. For details about how to set

the related parameters, see Table 6-1.

Step 2 Run the ADD OPTIOBJ command to add an optimization object. For details about how to set

the related parameters, see Table 6-1.

Step 3 Run the ADD AICICOPTIPARA command to add optimization parameters for adaptive ICIC.

For details about how to set the related parameters, see Table 6-2.

Step 4 Run the ADD OPTIFEATURE command to add an optimization task. For details about how

to set the related parameters, see Table 6-3.

----End

6.4.1.6 Activation Observation

Using the U2000

To check the running status of adaptive ICIC on the U2000, use either of the following methods:

l Checking the value of Status

On the Optimization Management tab page, select an optimization task and click .

Check the value of Status in the displayed Query Optimization Service dialog box.

– If Running is displayed under Status, as shown in Figure 6-4, the optimization task is

running properly. When the optimization task is complete, Completed is displayed

under Status. The system displays the optimization advice on the Optimization

Advice tab page in the right pane of the Optimization Management tab page.

– If Exception is dis played under Status, the task failed. Rectify the fault by following

the procedures for handling ALM-22746 Task Running Abnormal in ECO6910 Alarm

Reference.

– If Stopped is displayed under Status, the task has been stopped. Click to restart the

task.

eRAN TDD




28



Figure 6-4 Query Optimization Service dialog box

l Checking the SON logs

The U2000 logs the optimization tasks related to adaptive ICIC. To check the logs for the

task status, perform the following operations:

1. On the U2000 client, choose SON > SON Log.

The SON Log window is displayed.

2. Click the Query SON Log tab page. On the Query SON Log tab page, set Log

Category to Adaptive ICIC Log, set Event Name to Not Limited, and set EventSource Object and Time Period as required.

3. Click Synchronize in the lower right corner of the SON Log window.

4. Click Query.

Using MML Commands

Run the DSP OPTIFEATURE command and check the value of State in the command output:

l If the value is Running, the optimization task is running properly.

lIf the value is Abnormal, rectify the fault by following the procedures for handlingALM-22746 Task Running Abnormal in ECO6910 Alarm Reference.

l If the value is Stopped, the optimization task has been stopped. To restart the optimization

task, run the MOD OPTIFEATURE command with Feature Switch set to ON(ON).

6.4.1.7 Optimization Advice Confirmation and Delivery

If the Optimization Implementation Mode parameter is set to MANUAL(MANUAL), the

generated optimization advice must be confirmed by the operator before it can be delivered to

eNodeBs. The latest batch of optimization advice is recommended and all of the optimization

advice in the same batch must be delivered together.

eRAN TDD




29



NOTE

l If the delivered optimization advice is not the latest, the reconfigured ICIC working mode will not

adapt to cell load and inter-cell interference, therefore adversely affecting the network performance.

l The U2000 delivers all of the optimization advice in the same batch to eNodeBs, even if you choose

to deliver some pieces of optimization advice in a batch.

You are advised to view and deliver the optimization advice on the U2000. If an optimization

task is started using MML commands, the U2000 automatically displays the optimization advice.

To confirm and deliver the optimization advice, perform the following operations:

Step 1 On the U2000 client, choose SON > LTE Adaptive ICIC in the traditional style, or double-

click SON on the Application Center tab page and then choose Self Optimization > LTE

Adaptive ICIC in the application style.


Step 2 On the Optimization Management tab page, click the Optimization Advice tab page.

Step 3 On the Optimization Advice tab page, select optimization advice and click to deliver it.

The progress bar shows the progress of the delivery and implementation of the optimization

advice, as shown in Figure 6-5.

Figure 6-5 Optimization Advice tab page

----End

The optimization advice involves the following fields:

l CGI (MCC-MNC-eNodeB ID-Cell ID)

l eNodeB Namel Cell Name

l DlEarfcn

l DlBandWidth

l UL BandMode

l UL Suggestion

l DL BandMode

l DL Suggestion

l Cell FDD TDD Indication

l Generated On

eRAN TDD




30



l Execution Time

l Operation Type

l Operation Status

lRollback Time

6.4.1.8 Reconfiguration

Using the U2000

To reconfigure adaptive ICIC on the U2000 client, perform the following operations as required.

If... Then...

Modify parameters for

an optimization zone.

l Choose Configuration > eCoordinator Settings in the

traditional style, or double-click Configuration on theApplication Center tab page and then choose Settings >

eCoordinator Settings in the application style.

The eCoordinator Settings window is displayed.

l On the Zone Settings tab page, click to modify parameters

for an optimization zone.

Modify the parameter

policy.

l Choose SON > LTE Adaptive ICIC in the traditional style, or

double-clickSON on the Application Center tab page and then

choose Self Optimization > LTE Adaptive ICIC in the

application style.


l On the Parameter Policy tab page, click to modify

optimization parameters.

NOTE

If an optimization task using a parameter policy is currently underway,

modifying the Optimization Type parameter of the parameter policy will

restart this task. The optimization period for an optimization task restarts

from the time when the optimization task is restarted.

Modify the execution

mode.

l Choose SON > LTE Adaptive ICIC in the traditional style, or

double-clickSON on the Application Center tab page and then

choose Self Optimization > LTE Adaptive ICIC in the

application style.The LTE Adaptive ICIC window is displayed.

l Click the Optimization Management tab page and click . In

the Modify Optimization Task dialog box, change the value

of Execution Mode.

Using MML Commands

To reconfigure adaptive ICIC using MML commands, perform the following operations as

required.

eRAN TDD




31



If... Then...

Modify an optimization

zone.

Run the ADD OPTIZONE command to add a zone.

Modify an optimization

object.

Run the ADD OPTIOBJ command to add an object.

Modify the parameters

for adaptive ICIC.

Run the MOD AICICOPTIPARA command.

NOTE

If an optimization task using a parameter policy is currently underway,

modifying the Optimization Type parameter of the parameter policy will

restart this task. The optimization period for an optimization task restarts

from the time when the optimization task is restarted.

Modify the parameters

for an optimization

task.

Run the MOD OPTIFEATURE command.

6.4.1.9 Deactivation

Using the U2000

Select the adaptive ICIC feature on the U2000 and click to deactivate it.

Using MML Commands

Run the MOD OPTIFEATURE command with Feature Switch set to OFF(OFF) to stop theoptimization task.

6.4.2 Evolution-based Mode

6.4.2.1 Process

Figure 6-6 outlines the procedure for deploying adaptive ICIC.

Figure 6-6 Procedure for deploying adaptive ICIC

eRAN TDD




32



6.4.2.2 Requirements

Hardware

For detailed requirements, see "Hardware" in 6.4.1.2 Requirements.

System Configuration

The requirements for system configuration are as follows:

l Intra-frequency neighbor relationships are configured between the cells to be optimized by

adaptive ICIC.

l The CeuPa and CcuPa parameters are associated with the PaPcOff parameter. For the

recommended values of CeuPa and CcuPa, see the eNodeB Parameter Reference.

l SCTP links between eNodeBs and the eCoordinator are configured on the eNodeB side.

For details about configuration, see 3900 Series Base Station Initial ConfigurationGuide.

l SCTP links between eNodeBs and the eCoordinator as well as eNodeB information and E-

UTRAN cells are configured on the eCoordinator side. For details about configuration, see

ECO6910 Initial Configuration Guide of V100R003.

License

Operators have purchased and activated the following licenses on the eCoordinator side.

Feature ID Feature Name License Control Item NE Sales Unit

None ECO6910 Basic

Software-LTE

TDD

ECO6910 Basic

Software-LTE TDD (per

Cell)

ECO6910 per Cell

None Hardware

Capacity of LTE

FDD and LTE

TDD Coordinated

Cell

Hardware Capacity of

LTE FDD and LTE TDD

Coordinated Cell (per 50

Cell)

ECO6910 per 50 Cell

TDLOFD-06

0201

Adaptive Inter-

Cell InterferenceCoordination

Adaptive Inter-Cell

Interference Coordination(LTE TDD) (per Cell)

ECO6910 per Cell

The Adaptive Inter-Cell Interference Coordination-LTE TDD (per Cell) license limits the total

number of LTE TDD cells that can be optimized by adaptive ICIC. If the number of selected

cells exceeds the licensed limit, the eCoordinator reports ALM-20741 Configuration Data

Exceeding License Capacity.

6.4.2.3 Data Preparation

When configuring adaptive ICIC, set the following parameters:

eRAN TDD




33



l Parameters for optimization objects. For details, see Table 6-4.

l Parameters for an optimization task. For details, see Table 6-5.

Table 6-4 Parameters for an optimization object

ParameterName

ParameterID

Data Source Setting Notes

Task Identifier TaskId User-defined This parameter uniquely specifies a

task within the eCoordinator.

Cell Index Type QueryCellIdT

ype

User-defined This parameter specifies a cell index

type used for query.

LTE Cell Index LTECellInde

x

Network plan

(negotiation not

required)

This parameter uniquely specifies an

E-UTRAN cell index within the

network.

LTE Cell Name LTECellNam

e

Network plan

(negotiation not

required)

This parameter specifies the name of

the E-UTRAN cell.

The name cannot contain the

following characters:

l , ; = " '

l Two or more consecutive percent

signs (%)

l Two or more consecutive spaces

l Three or more consecutive plus

signs (+)

l Only spaces

Mobile Country

Code

MCC Network plan

(negotiation not

required)

This parameter specifies a mobile

country code (MCC), indicates which

country that mobile users belong to.

Mobile Network

Code

MNC Network plan

(negotiation not

required)

This parameter specifies a mobile

network code (MNC), which

indicates which PLMN that mobile

users belong to.

eNodeB ID eNodeBId Network plan(negotiation not

required)

This parameter references an eNodeBID, which is unique within the

network.

Cell ID CellId Network plan

(negotiation not

required)

This parameter references a cell ID,

which is unique within an eNodeB.

eRAN TDD




34



Table 6-5 Parameters for an optimization task

ParameterName

Parameter ID Data Source Setting Notes

Task Identifier TaskId User-defined This parameter uniquely specifies atask within the eCoordinator.

Task Name TaskName User-defined This parameter uniquely specifies the

name of the task.

The name cannot contain the

following characters:

l , ; = " '

l Two or more consecutive percent

signs (%)

l Two or more consecutive spaces

l Three or more consecutive plus

signs (+)

l Only spaces

Cell Type CellType Network plan

(negotiation

not required)

This parameter specifies the type of

cells for which adaptive ICIC is

enabled. The parameter values are as

follows:

l FDD(FDD): indicates that

adaptive ICIC is enabled only for

FDD cells.l TDD(TDD): indicates that

adaptive ICIC is enabled only for

TDD cells.

l BOTH(BOTH): indicates that

adaptive ICIC is enabled for both

FDD and TDD cells.

Task Type TaskType Network plan

(negotiation

not required)

This parameter specifies the type of

adaptive ICIC. The parameter values

are as follows:

l UL(UpLink): indicates thatadaptive ICIC is applied only in

the uplink.

l DL(DownLink): indicates that

adaptive ICIC is applied only in

the downlink.

l ULDL(UpLink/DownLink) :

indicates that adaptive ICIC is

applied in both the uplink and the

downlink.

eRAN TDD




35



ParameterName


Running Period RunningPerio

d

Network plan

(negotiationnot required)

This parameter specifies the period

for calculating edge band modes.

Start Mode StartMode Network plan

(negotiation

not required)

This parameter specifies the task start

mode.

If this parameter is set to Now

(Now), the task starts immediately. If

this parameter is set to Delay

(Delay), the task starts at the time

specified by the StartTime

parameter.

Start Time StartTime Network plan(negotiation

not required)

This parameter specifies the task starttime.

This parameter takes effect when the

StartMode parameter is set to Delay

(Delay).

Running Mode RunningMode Network plan

(negotiation

not required)

This parameter specifies the running

mode of the eCoordinator. In

different modes, the eCoordinator

takes different actions.

If this parameter is set to

DYNAMIC_EDGE_BAND(DynamicEdgeBand) , the

eCoordinator instructs cells to work

in type-1 Reuse3 mode.

If this parameter is set to

STATIC_EDGE_BAND

(StaticEdgeBand) , the eCoordinator

instructs cells to work in type-2

Reuse3 mode.

High

Interference

Cell Threshold

HighInterCellI

nterThd

Network plan

(negotiation

not required)

This parameter specifies the high-

interference cell threshold, which is

used to determine whether to add a

cell to a high-interference area.

When enabling adaptive ICIC, adjust

this parameter to specify the actual

application area. A smaller value

indicates a large application area; a

larger value indicates a smaller

application area.

eRAN TDD




36



ParameterName


Region Average

InterferenceThreshold

ICICAreaAvgI

nterThd

Network plan

(negotiationnot required)

This parameter specifies the average

interference threshold of an adaptiveICIC application area. The threshold

is used to determine whether to

combine two areas into one high-

interference area.

When enabling adaptive ICIC, adjust

this parameter to specify the actual

application area. A smaller value

indicates a large application area; a

larger value indicates a smaller

application area.

RB UsageThreshold for

High

Interference

Cell

HighInterCell

RbUsageThd

Network plan(negotiation

not required)

This parameter specifies thethreshold of RB usage for cells with

high interference. A smaller value

indicates a higher probability that

ICIC areas are generated. A larger

value indicates a lower probability

that ICIC areas are generated.

UE Number

Threshold for

High

Interference

Cell

HighInterCell

UserNumThd

Network plan

(negotiation

not required)

This parameter specifies the number

threshold of UEs in cells with high

interference. A smaller value

indicates a higher probability that

ICIC areas are generated. A larger

value indicates a lower probability

that ICIC areas are generated.

Area Divide and

Identify Switch

RegionIdentify

Switch

Network plan

(negotiation

not required)

This parameter specifies the switch

for area division and identification.

When this switch is turned on, areas

with high interference and heavy

load are identified and ICIC takes

effect only in these areas. When this

switch is turned off, no actions are

performed to identify areas with highinterference and heavy load and ICIC

takes effect in the entire optimization

zone.

6.4.2.4 Precautions

None

6.4.2.5 Initial Configuration

Run the following commands on the eCoordinator LMT:

eRAN TDD




37



Step 1 Run the ADD AICICCELL command to add a cell to be optimized.

Step 2 Run the ADD AICIC command to add an adaptive ICIC optimization task.

Step 3 Run the ACT AICIC command to activate the adaptive ICIC optimization task.

----End

6.4.2.6 Activation Observation

Using MML Commands

Run the DSP AICIC command on the eCoordinator to check the optimization task status. If the

command output shows that the value of Task Status is Running, adaptive ICIC has been

activated.

Using Counters

After an optimization period, check on the U2000 the running status of adaptive ICIC using the

counters listed in Table 6-6. If not all counter values are zero, adaptive ICIC has been activated.

Table 6-6 Adaptive ICIC counters of the eCoordinator

Counter ID Counter Name Description

73428290 VS.ELTECELL.AICIC.Config.Succ Number of successful deliveries

of edge band mode configuration

73428293 VS.ELTECELL.AICIC.Config.Fail Number of unsuccessful

deliveries of edge band mode

configuration

73428294 VS.ELTECELL.AICIC.Config.Att Number of attempts to deliver

edge band mode configuration

73428295 VS.ELTECELL.AICIC.Config.RspTi-

meout

Number of times there is no

response to deliveries of edge

band mode configuration

73428296 VS.ELTECELL.AICIC.DL.Mode.1 Number of times the downlink edge band mode is set to Reuse1

73428297 VS.ELTECELL.AICIC.DL.Mode.3.1 Number of times the downlink

edge band mode is set to

Reuse3-1



Reuse3-2



Reuse3-3

eRAN TDD




38






Reuse6-1



Reuse6-2



Reuse6-3



Reuse6-4



Reuse6-5



Reuse6-6

73428306 VS.ELTECELL.AICIC.UL.Mode.1 Number of times the uplink edge

band mode is set to Reuse1

73428307 VS.ELTECELL.AICIC.UL.Mode.3.1 Number of times the uplink edge

band mode is set to Reuse3-1

















eRAN TDD




39



Using an Se Interface Trace Task

On the eCoordinator LMT, Use an Se interface trace task to check whether adaptive ICIC has been activated:

Step 1 Choose Trace > Coordinating Services > Se Interface Trace, and double-click Se Interface

Trace.

Step 2 In the displayed dialog box, click the Basic tab, select the SCTPAP check box in the Trace

Type area, and set related parameters.

Step 3 Click Submit to complete the creation of the Se interface trace task.

Step 4 Check the trace result.

If the result includes the AICIC_DATA_RPT, AICIC_CONFIG, and

AICIC_CONFIG_ACK messages, as shown in Figure 6-7, adaptive ICIC has been activated.

Figure 6-7 Messages related to adaptive ICIC

----End

6.4.2.7 Reconfiguration

Adjusting Adaptive ICIC Parameters

Use MML commands to adjust adaptive ICIC parameters.

If… Then…

An optimization object

requires adjustment

Run the RMV AICICCELL command to remove an cell or run the

ADD AICICCELL command to add a cell.

An optimization task

requires adjustment

Run the MOD AICIC command to parameters related to an

optimization task.

NOTE

If a parameter is being used by an optimization task, adjusting the parameter

will cause the task to restart. The optimization period will be reset to the

restart time.

eRAN TDD




40



Switching the Inventory-based Mode to the Evolution-based Mode

If ECO6910 V100R002 is upgraded to ECO6910 V100R003, you are advised to switch the

inventory-based mode to the evolution-based mode. Pay attention to the following items:

l Determine the switching time based on actual network conditions. Generally, perform the

switching during off-peak hours, for example, during the wee hours.

l Note that the switching will interrupt adaptive ICIC for a while. The interruption duration

depends on the switching duration. Generally, the switch can be completed within 10

minutes.

The switching procedure is as follows:

Step 1 Stop the running of adaptive ICIC in inventory-based mode, and ensure that adaptive ICIC is

successfully stopped. For detailed operations, see 6.4.1.9 Deactivation.

Step 2 Start the running of adaptive ICIC in evolution-based mode, and ensure that adaptive ICIC is

successfully started. For detailed operations, see 6.4.2.5 Initial Configuration.

----End

6.4.2.8 Deactivation

Run the DEA AICIC command to deactivate an adaptive ICIC optimization task.

6.5 Performance Monitoring

After adaptive ICIC is activated, check the changes in the following items:

l Average uplink and downlink edge spectral efficiencies

l Number of times different modulation and coding scheme (MCS) indexes are scheduled in

the uplink and downlink

These changes reflect the effect of adaptive ICIC. The average edge spectral efficiency can be

calculated using the following formula:

Average edge spectral efficiency = Total bits of user data from CEUs in a cell/(Total duration

for transmission of CEU data in a cell x Average number of PRBs used by CEUs in a cell)

Table 6-7 lists the counters used to monitor adaptive ICIC.

Table 6-7 Counters used to monitor adaptive ICIC


1526728475 L.Thrp.bits.UL.CE

U

Total bits of user data received at the PDCP layer from

uplink CEUs in a cell

1526728476 L.Thrp.Time.UL.C

EU

Total duration for the PDCP layer receiving user data

from uplink CEUs in a cell

1526728477 L.Thrp.bits.DL.CE

U

Total bits of user data transmitted at the PDCP layer to

the downlink CEUs in a cell

eRAN TDD




41




1526728478 L.Thrp.Time.DL.C

EU

Total duration for the PDCP layer transmitting user data

to the downlink CEUs in a cell

1526728479 L.ChMeas.PRB.U

L.CEU.Used.Avg

Average number of PRBs used by the uplink CEUs in

a cell

1526728480 L.ChMeas.PRB.D

L.CEU.Used.Avg

Average number of PRBs used by the downlink CEUs

in a cell

1526727444

to

526727475

L.ChMeas.PDSCH

.MCS.0 to

L.ChMeas.PDSCH

.MCS.31

Number of times MCS index 0 is scheduled on the

PDSCH to Number of times MCS index 31 is scheduled

on the PDSCH

1526727412

to1526727443

L.ChMeas.PUSCH

.MCS.0 toL.ChMeas.PUSCH

.MCS.31

Number of times MCS index 0 is scheduled on the

PUSCH to Number of times MCS index 31 is scheduledon the PUSCH

1526728262 L.Thrp.Time.DL Total transmit duration of downlink PDCP SDUs in a

cell

6.6 Parameter Optimization

The parameters of adaptive ICIC that can be optimized include eCoordinator parameters andeNodeB parameters.

6.6.1 eCoordinator Parameters

On the eCoordinator, optimize the parameters related to the optimization period, object, and

zone.

l The Optimization Period parameter specifies how often the eCoordinator analyzes

network conditions and provides the optimization advice.

– If the parameter is set to a large value, the cell mode and network performance remain

stable for a long period of time. However, the cell mode cannot be updated in a timely

manner if the interference or cell load varies, which may adversely affect network performance.

– If the parameter is set to a small value, the eCoordinator can trace changes in network

conditions quickly and provide the appropriate optimization advice. However, the

eCoordinator will be heavily loaded for a long period of time and the network

performance may fluctuate.

In most cases, retain the default value Day_7(7 Days) for the Optimization Period

parameter. However, the parameter value can be changed as required. For details, see

6.4.1.8 Reconfiguration and 6.4.2.7 Reconfiguration .

l Optimization objects are cells to be optimized by adaptive ICIC. All of the cells to be

optimized form an optimization zone. You can add or remove optimization objects to adjust

the range of an optimization zone. It is recommended that cells providing continuous

eRAN TDD




42



coverage be selected to form an optimization zone. For details, see 6.4.1.8

Reconfiguration and 6.4.2.7 Reconfiguration.

6.6.2 eNodeB Parameters

On the eNodeB, optimize the parameters related to the offset parameters of ICIC events A3 and

A6.

The offset parameters of downlink ICIC event A3, downlink ICIC event A6, and uplink ICIC

event A3 are specified by the A3Offset , A6Offset , and A3Offset parameters, respectively. These

parameters are used to adjust the number of CEUs by adjusting the cell edge scope reported in

ICIC events. When CEUs in an area accounts for about 1/3 of the total number of UEs in this

area, ICIC achieves the best performance.

The parameter settings have the following impact:

l If one of these parameters is set to a large value, it is difficult to trigger the reporting of the

corresponding ICIC event. As a result, the number of CEUs decreases, and some UEs areno longer regarded as CEUs and no longer coordinated by the eNodeB. In the uplink, these

UEs are scheduled on the center band, which leads to high interference to neighboring cells

and affects the performance of CEUs in the neighboring cells. In the downlink, these UEs

are regarded as CCUs and scheduled with low power, which deteriorates the performance

of these UEs.

l If one of these parameters is set to a small value, it is easy to trigger the reporting of the

corresponding ICIC event. As a result, the number of CEUs increases, and some CEUs that

require performance improvement cannot be coordinated and therefore their performance

deteriorates.

In conclusion, if the proportion of CEUs is far beyond or below 1/3 in an area during a period,adjust the corresponding parameter and enable the proportion to be close to 1/3. The average

number of uplink CEUs is measured by the L.Traffic.ULCEU.Avg counter, and the average

number of downlink CEUs is measured by the L.Traffic.CEU.Avg counter.

6.7 Troubleshooting

6.7.1 Inventory-based Mode

Optimization Task Startup FailureIf an optimization task fails to start, perform the following operations:

Step 1 Check whether ALM-20741 Configuration Data Exceeding License Capacity has been reported.

l If so, clear the alarm by following the procedures provided in ECO6910 Alarm Reference.

l If not, go to Step 2.

Step 2 Check whether ALM-22746 Task Running Abnormal has been reported.

l If so, clear the alarm by following the procedures provided in ECO6910 Alarm Reference.

l If not, contact Huawei technical support.

----End

eRAN TDD




43



Optimization Advice Delivery Failure

If the optimization advice fails to be delivered, check whether ALM-20906 eCoordinator and

NE Disconnect Alarm has been reported.

l If so, clear the alarm by following the procedures provided in ECO6910 Alarm

Reference.

l If not, contact Huawei technical support.

No Optimization Advice Generated by Adaptive ICIC

When the optimization period arrives but the eCoordinator does not generate any optimization

advice, perform the following operations:

Step 1 Check whether a cell is working on a different frequency or bandwidth from its neighboring

cells in the optimization zone.

Adaptive ICIC is applicable only when neighboring cells use the same frequency and bandwidth.

l If a cell in the optimization zone is working on a different frequency or bandwidth from its

neighboring cells, the eCoordinator does not generate any optimization advice for the cell.

l If all of the neighboring cells in the optimization zone use the same frequency and bandwidth

but the eCoordinator does not generate any optimization advice, go to Step 2.

Step 2 Check the average inter-cell interference in the optimization zone. For details, see 6.2 Required

Information.

On networks where the distance between eNodeBs is large or the number of CEUs is small,inter-cell interference is low and therefore the eCoordinator does not generate any optimization

advice. If the inter-cell interference reaches a specified value in the optimization zone but the

eCoordinator does not generate any optimization advice, contact Huawei technical support.

----End

Alarms Related to Adaptive ICIC

Table 6-8 lists the alarms related to adaptive ICIC.

Table 6-8 Alarms related to adaptive ICIC

Alarm ID Alarm Name NE

20906 eCoordinator and NE Disconnect Alarm eCoordinator

20741 Configuration Data Exceeding License

Capacity

eCoordinator

22746 Task Running Abnormal eCoordinator

eRAN TDD




44



6.7.2 Evolution-based Mode

Optimization Task Startup Failure

If an optimization task fails to start, check whether ALM-20741 Configuration Data ExceedingLicense Capacity has been reported.

l If so, clear the alarm by following the procedures provided in ECO6910 Alarm

Reference.

l If not, contact Huawei engineers.

Alarms Related to Adaptive ICIC

Table 6-9 lists the alarms related to adaptive ICIC.

Table 6-9 Alarms related to adaptive ICIC

Alarm ID Alarm Name NE

20906 eCoordinator and NE Disconnect Alarm eCoordinator

20741 Configuration Data Exceeding License Capacity eCoordinator

22702 Feature Function Disabled Abnormal eCoordinator

22701 Run short of NE data eCoordinator

eRAN TDD




45



7 Parameters

Table 7-1 Parameter description

MO Parameter ID

MMLCommand

FeatureID

FeatureName

Description

CellDlp

cPdsch

CeuPa MOD

CELLD

LPCPD

SCH

LST

CELLD

LPCPDSCH

LBFD-0

02016 /

TDLBF

D-00201

6

LBFD-0

0202201/

TDLBF

D-00202

201

LOFD-0

0101401

Dynami

c

Downlin

k Power

Allocati

on

Downlink Static

Inter-

Cell

Interfere

nce

Coordin

ation

Downlin

k

Dynami

c Inter-Cell

Interfere

nce

Coordin

ation

Meaning: Indicates the PA value of cell edge UEs when

DL ICIC is enabled.

GUI Value Range: PA_NEG6(-6dB),

PA_NEG4DOT77(-4.77dB), PA_NEG3(-3dB),

PA_NEG1DOT77(-1.77dB), PA_0(0dB), PA_1(1dB),

PA_2(2dB), PA_3(3dB)

Actual Value Range: PA_NEG6, PA_NEG4DOT77,PA_NEG3, PA_NEG1DOT77, PA_0, PA_1, PA_2,

PA_3

Default Value: PA_NEG1DOT77(-1.77dB)

Unit: dB

eRAN TDD

Adaptive ICIC Feature Parameter Description 7 Parameters



46



MO Parameter ID

MMLCommand

FeatureID

FeatureName

Description

CellDlpcPdsch CcuPa MODCELLD

LPCPD

SCH

LST

CELLD

LPCPD

SCH

LBFD-002016 /

TDLBF

D-00201

6

LBFD-0

0202201

/

TDLBF

D-00202

201

LOFD-00101401

Dynamic

Downlin

k Power

Allocati

on

Downlin

k Static

Inter-

Cell

Interfere

nce

Coordin

ation

Downlin

k

Dynami

c Inter-

Cell

Interfere

nce

Coordin

ation

Meaning: Indicates the PA value of cell center UEswhen DL ICIC is enabled.

GUI Value Range: PA_NEG6(-6dB),

PA_NEG4DOT77(-4.77dB), PA_NEG3(-3dB),

PA_NEG1DOT77(-1.77dB), PA_0(0dB), PA_1(1dB),

PA_2(2dB), PA_3(3dB)

Actual Value Range: PA_NEG6, PA_NEG4DOT77,

PA_NEG3, PA_NEG1DOT77, PA_0, PA_1, PA_2,

PA_3

Default Value: PA_NEG6(-6dB)

Unit: dB

CellDlp

cPdschP

a

PaPcOff MOD

CELLD

LPCPD

SCHPA

LST

CELLD

LPCPD

SCHPA

LBFD-0

02016 /

TDLBF

D-00201

6

Dynami

c

Downlin

k Power

Allocati

on

Meaning: Indicates the PA to be used when PA

adjustment for PDSCH power control is disabled, DL

ICIC is disabled, and the even power distribution is used

for the PDSCH.

GUI Value Range: DB_6_P_A(-6 dB),

DB_4DOT77_P_A(-4.77 dB), DB_3_P_A(-3 dB),

DB_1DOT77_P_A(-1.77 dB), DB0_P_A(0 dB),

DB1_P_A(1 dB), DB2_P_A(2 dB), DB3_P_A(3 dB)

Actual Value Range: DB_6_P_A, DB_4DOT77_P_A,

DB_3_P_A, DB_1DOT77_P_A, DB0_P_A,

DB1_P_A, DB2_P_A, DB3_P_A

Default Value: DB_3_P_A(-3 dB)

Unit: dB

eRAN TDD




47



MO Parameter ID

MMLCommand

FeatureID

FeatureName

Description

CellMcPara A3Offset MODCELLM

CPARA

LST

CELLM

CPARA

None None Meaning: Indicates the offset for event A3. This offsetis the difference between the signal quality of a

neighboring cell and that of the serving cell. A larger

value indicates a higher requirement on neighboring cell

quality for reporting event A3.

GUI Value Range: -30~30

Actual Value Range: -15~15

Default Value: -13

Unit: 0.5dB

CellMcP

ara

A6Offse

t

MOD

CELLMCPARA

LST

CELLM

CPARA

None None Meaning: Indicates the offset for event A6. This offset

is the difference between the signal quality of aneighboring cell and that of the serving cell. A larger

value indicates a higher requirement on neighboring cell

quality for reporting event A6.



Default Value: -13

Unit: 0.5dB

CellULI

cicMcPara

A3Offse

t

MOD

CELLULICICM

CPARA

LST

CELLU

LICICM

CPARA

LBFD-0

0202202/

TDLBF

D-00202

202

LOFD-0

0101402

Uplink

StaticInter-

Cell

Interfere

nce

Coordin

ation

Uplink

Dynami

c Inter-

Cell

Interfere

nce

Coordin

ation

Meaning: Indicates the offset for the UL ICIC

measurement event. If this parameter is set to a largevalue, the signal quality of the neighboring cell must be

significantly better than that of the serving cell before a

UL ICIC measurement event is triggered. For details,

see 3GPP TS 36.331.



Default Value: -10

Unit: 0.5dB

eRAN TDD




48



8 Counters

Table 8-1 Counter description

Counter ID Counter Name CounterDescription

Feature ID Feature Name

1526728480 L.ChMeas.PRB.DL

.CEU.Used.Avg

Average number of

PRBs used by

downlink CEUs in a

cell

Multi-mode: None

GSM: None

UMTS: None

LTE:

LBFD-00202201

TDLBFD-0020220

1LOFD-00101401

TDLOFD-0010140

1

LOFD-060201

TDLOFD-060201

Downlink Static

Inter-Cell

Interference

Coordination

Downlink Static

Inter-Cell

Interference

CoordinationDownlink Dynamic

Inter-Cell

Interference

Coordination

Downlink Dynamic

Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

eRAN TDD

Adaptive ICIC Feature Parameter Description 8 Counters



49





1526728479 L.ChMeas.PRB.UL

.CEU.Used.Avg

Average number of

PRBs used by uplink CEUs in a cell

Multi-mode: None

GSM: None

UMTS: None

LTE:

LBFD-00202202

TDLBFD-0020220

2

LOFD-00101402

TDLOFD-0010140

2

LOFD-060201

TDLOFD-060201

Uplink Static Inter-



Cell Interference

Coordination

Uplink Dynamic

Inter-Cell

Interference

Coordination

Uplink Dynamic

Inter-Cell

InterferenceCoordination

Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

1526728477 L.Thrp.bits.DL.CE

U

Total bits of

downlink PDCP

SDUs sent to CEUsin a cell

Multi-mode: None

GSM: None

UMTS: None

LTE:

LBFD-00202201

TDLBFD-0020220

1

LOFD-00101401

TDLOFD-0010140

1

LOFD-060201

TDLOFD-060201

Downlink Static

Inter-Cell


Downlink Static

Inter-Cell

Interference

Coordination

Downlink Dynamic

Inter-Cell

Interference

Coordination

Downlink DynamicInter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

eRAN TDD




50





1526728475 L.Thrp.bits.UL.CE

U

Total bits of uplink

PDCP PDUsreceived from CEUs

in a cell

Multi-mode: None

GSM: None

UMTS: None

LTE:

LBFD-00202202

TDLBFD-0020220

2

LOFD-00101402

TDLOFD-0010140

2

LOFD-060201

TDLOFD-060201




Cell Interference

Coordination

Uplink Dynamic

Inter-Cell

Interference

Coordination

Uplink Dynamic

Inter-Cell


Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

1526728478 L.Thrp.Time.DL.C

EU

Total duration in

which downlink

user data is sent toCEUs at the PDCP

layer in a cell

Multi-mode: None

GSM: None

UMTS: None

LTE:

LBFD-00202201

TDLBFD-0020220

1

LOFD-00101401

TDLOFD-0010140

1

LOFD-060201

TDLOFD-060201

Downlink Static

Inter-Cell


Downlink Static

Inter-Cell

Interference

Coordination

Downlink Dynamic

Inter-Cell

Interference

Coordination

Downlink DynamicInter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

eRAN TDD




51





1526728476 L.Thrp.Time.UL.C

EU

Total duration in

which uplink user data is received from

CEUs at the PDCP

layer in a cell

Multi-mode: None

GSM: None

UMTS: None

LTE:

LBFD-00202202

TDLBFD-0020220

2

LOFD-00101402

TDLOFD-0010140

2

LOFD-060201

TDLOFD-060201




Cell Interference

Coordination

Uplink Dynamic

Inter-Cell

Interference

Coordination

Uplink Dynamic

Inter-Cell


Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

eRAN TDD




52





1526727380 L.Traffic.CEU.Avg Average number of

downlink cell edgeusers (CEUs) in a

cell

Multi-mode: None

GSM: None

UMTS: None

LTE: LBFD-002007

TDLBFD-002007

LOFD-00101401

TDLOFD-0010140

1

LBFD-00202201

TDLBFD-0020220

1LOFD-060201

TDLOFD-060201

RRC Connection

ManagementRRC Connection

Management

Downlink Dynamic

Inter-Cell

Interference

Coordination

Downlink Dynamic

Inter-Cell

Interference

Coordination

Downlink Static

Inter-Cell

Interference

Coordination

Downlink Static

Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

CoordinationAdaptive Inter-Cell

Interference

Coordination

eRAN TDD




53





1526727381 L.Traffic.CEU.Max Maximum number

of downlink celledge users (CEUs)

in a cell

Multi-mode: None

GSM: None

UMTS: None

LTE: LBFD-002007

TDLBFD-002007

LOFD-00101401

TDLOFD-0010140

1

LBFD-00202201

TDLBFD-0020220

1LOFD-060201

TDLOFD-060201

RRC Connection


Management

Downlink Dynamic

Inter-Cell

Interference

Coordination

Downlink Dynamic

Inter-Cell

Interference

Coordination

Downlink Static

Inter-Cell

Interference

Coordination

Downlink Static

Inter-Cell

Interference

Coordination

Adaptive Inter-Cell

Interference

CoordinationAdaptive Inter-Cell

Interference

Coordination

eRAN TDD




54





1526728473 L.Traffic.ULCEU.

Avg

Average number of

uplink cell edgeusers (CEUs) in a

cell

Multi-mode: None

GSM: None

UMTS: None

LTE: LBFD-002007

TDLBFD-002007

LOFD-00101402

TDLOFD-0010140

2

LBFD-00202202

TDLBFD-0020220

2LOFD-060201

TDLOFD-060201

RRC Connection


Management

Uplink Dynamic

Inter-Cell

Interference

Coordination

Uplink Dynamic

Inter-Cell

Interference

Coordination


Cell Interference

Coordination


Cell Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell


eRAN TDD




55





1526728474 L.Traffic.ULCEU.

Max

Maximum number

of uplink cell edgeusers (CEUs) in a

cell

Multi-mode: None

GSM: None

UMTS: None

LTE: LBFD-002007

TDLBFD-002007

LOFD-00101402

TDLOFD-0010140

2

LBFD-00202202

TDLBFD-0020220

2LOFD-060201

TDLOFD-060201

RRC Connection


Management

Uplink Dynamic

Inter-Cell

Interference

Coordination

Uplink Dynamic

Inter-Cell

Interference

Coordination


Cell Interference

Coordination


Cell Interference

Coordination

Adaptive Inter-Cell

Interference

Coordination

Adaptive Inter-Cell


eRAN TDD




56



9 Glossary

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

eRAN TDD

Adaptive ICIC Feature Parameter Description 9 Glossary



57



10 Reference Documents

1. 3GPP TS 36.331, "RRC Protocol Specification"

2. 3GPP TS 36.213, "Physical layer procedures"

3. ICIC Feature Parameter Description

4. Power Control Feature Parameter Description

5. ECO6910 Installation Guide

6. ECO6910 Initial Configuration Guide

7. ECO6910 Commissioning Guide

8. ECO6910 Alarm Reference

eRAN TDD

Adaptive ICIC Feature Parameter Description 10 Reference Documents