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eRAN
3D Beamforming Feature Parameter Description Issue
02
Date
2017-04-26
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2017. 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]
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eRAN 3D Beamforming Feature Parameter Description
Contents
Contents 1 About This Document.................................................................................................................. 1 1.1 Scope.............................................................................................................................................................................. 1 1.2 Intended Audience.......................................................................................................................................................... 1 1.3 Change History............................................................................................................................................................... 1 1.4 Differences Between eNodeB Types.............................................................................................................................. 2
2 Overview......................................................................................................................................... 3 3 Technical Description...................................................................................................................4 3.1 Principles........................................................................................................................................................................ 4 3.2 Network Analysis........................................................................................................................................................... 5 3.2.1 Benefit Analysis.......................................................................................................................................................... 5 3.2.2 Impact Analysis........................................................................................................................................................... 6 3.3 Requirements.................................................................................................................................................................. 7 3.3.1 License Requirements..................................................................................................................................................7 3.3.2 Software Requirements................................................................................................................................................8 3.3.3 Hardware Requirements.............................................................................................................................................. 9 3.3.4 Other Requirements................................................................................................................................................... 10 3.4 Operation and Maintenance..........................................................................................................................................10 3.4.1 Activation and Optimization......................................................................................................................................11 3.4.2 Observation and Monitoring......................................................................................................................................13
4 Parameters..................................................................................................................................... 16 5 Counters........................................................................................................................................ 26 6 Glossary......................................................................................................................................... 29 7 Reference Documents................................................................................................................. 30
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eRAN 3D Beamforming Feature Parameter Description
1 About This Document
1
About This Document
1.1 Scope This document describes LEOFD-121204 3D Beamforming, including its technical principles, related features, network impact, and engineering guidelines. Any parameters, alarms, counters, or managed objects (MOs) described herein apply only to the corresponding software release. For future software releases, refer to the corresponding updated product documentation. This document applies only to LTE FDD. Any "LTE" in this document refers to LTE FDD, and "eNodeB" refers to LTE FDD eNodeB.
1.2 Intended Audience This document is intended for personnel who: l
Need to understand the features described herein
l
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: l
Feature change Changes in features and parameters of a specified version as well as the affected entities
l
Editorial change Changes in wording or addition of information and any related parameters affected by editorial changes. Editorial change does not specify the affected entities.
eRAN12.1 02 (2017-04-26) This issue includes the following changes. Issue 02 (2017-04-26)
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eRAN 3D Beamforming Feature Parameter Description
1 About This Document
Change Type
Change Description
Parameter Change
Feature change
Updated hardware requirements. For details, see 3.3.3 Hardware Requirements.
None
Updated mutually exclusive features. For details, see 3.3.2 Software Requirements. Editorial change
Revised the organization and description of this document.
None
eRAN12.1 01 (2017-03-08) This issue includes the following changes. Change Type
Change Description
Parameter Change
Feature change
Updated hardware requirements. For details, see 3.3.3 Hardware Requirements.
None
Editorial change
Revised technical description.
None
eRAN12.1 Draft A (2016-12-30) This is the first release of this document.
1.4 Differences Between eNodeB Types The feature described in this document applies only to macro eNodeBs.
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eRAN 3D Beamforming Feature Parameter Description
2 Overview
2
Overview
Based on the increasing traffic volume in densely populated urban areas, the capacity requirements in next few years are predicted to increase threefold to sixfold, and the spectrum resources in the 1.8 GHz to 2.6 GHz bands are so limited that they should be fully utilized. The 3D Beamforming feature uses active antenna units (AAUs) to provide the Static Shared Beam (SSB) function, which generates two beams on the vertical plane at such an AAU.
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eRAN 3D Beamforming Feature Parameter Description
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3
Technical Description
3.1 Principles SSB uses beamforming to generate two cells, inner and outer, at an AAU on the vertical plane. The two cells operate on the same frequency. This function is used for capacity expansion at hotspots. It is an option for operators that require capacity expansion but have no additional frequencies available. NOTE
This function is mainly used for downlink capacity expansion, for example, when there is a cell resource shortage.
The RETSUBUNIT.TILT parameter is set to different values for different remote electrical tilt (RET) subunits, allowing SSB to generate two beams on the vertical plane. The two beams are used for the inner and outer cells, as shown in Figure 3-1. Figure 3-1 SSB
If the PrbBalanceSw option of the CellAlgoSwitch.VmsSwitch parameter is selected, load balancing between inner and outer cells is enabled. The CellVMS.VmsHoUeNumTh parameter specifies the maximum number of UEs that can be handed over from a given cell within 10s. Issue 02 (2017-04-26)
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3 Technical Description
For load balancing, the eNodeB instructs UEs that have just accessed the inner or outer cell to perform intra-frequency measurements when both of the following conditions are met: l
The downlink physical resource block (PRB) usage of the serving cell is greater than the value of the CellVMS.VmsPrbLoadTh parameter.
l
The downlink PRB usage of the serving cell minus that of a neighboring cell is greater than the value of the CellVMS.VmsPrbDiffTh parameter.
The eNodeB selects UEs that each meet both of the following conditions for load balancing: l
The UE reports intra-frequency handover event A3, the offset for which is equal to IntraFreqHoGroup.IntraFreqHoA3Offset minus CellVMS.VmsA3Offset. For the definition of event A3, see Intra-RAT Mobility Management in Connected Mode Feature Parameter Description.
l
The PRB usage by the UE is greater than 2%.
3.2 Network Analysis 3.2.1 Benefit Analysis The SSB function increases system capacity considerably in urban areas where there is contiguous coverage. In a cell served by an eNodeB with a 2T2R 3-sector configuration, SSB increases the downlink cell traffic volume and downlink average UE throughput by up to 100% and increases the downlink cell-edge UE throughput by up to 80%. The increases are closely related to cell loads, whether the cells using SSB provide contiguous coverage, and how UEs are distributed across inner and outer cells. The gains of this function are higher if the cell load is higher, the cell coverage is more contiguous, and the percentage of UEs in each inner cell is closer to 50%. When the available bandwidth is less than 5 MHz, SSB works only when AAUs are directly connected to baseband units (BBUs). A smaller available bandwidth causes less accurate channel calibration and therefore fewer gains produced by this function. This function is suitable for high-traffic scenarios in urban areas. It is recommended when the busy-hour PRB usage of the cells is at least 50%. Do not use this feature when the inter-site distance exceeds 500 m. Downlink PRB usage = L.ChMeas.PRB.DL.Used.Avg/L.ChMeas.PRB.DL.Avail x 100%
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Counter ID
Counter Name
Counter Description
1526726740
L.ChMeas.PRB.DL.Used. Avg
Average number of used PDSCH PRBs
1526728433
L.ChMeas.PRB.DL.Avail
Number of available downlink PRBs
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3.2.2 Impact Analysis Network Impact l
-perceived downlink throughput The -perceived throughput may decrease in idle periods, for example, when the PRB usage is less than 20%.
l
Downlink peak data rate In a cell served by an eNodeB with a 2T2R 3-sector configuration, SSB causes an increase in the percentage of times rank 1 is reported and therefore a lower percentage of UEs that achieve their peak data rates in the case of downlink 2x2 multiple-input multiple-output (MIMO). In addition, UEs cannot reach their expected peak data rates in the case of downlink 4x4 MIMO.
l
Downlink coverage On a network with non-contiguous coverage from cells generated by using SSB, if SSB causes cell power to be lower than neighboring 2T2R cell power, the local cell coverage shrinks.
l
-perceived uplink throughput Load balancing between inner and outer cells is triggered by downlink PRB usage. When traffic is imbalanced between uplink and downlink and there are sufficient uplink PRBs, -perceived uplink throughput may decrease after the load balancing.
l
Other network performance indicators In an eNodeB with a 2T2R 3-sector configuration, SSB causes an increase in the number of cells. This may result in a lower handover success rate, more RRC connection reestablishments, and a higher service drop rate than the performance indicators before SSB is used.
Impacted Features
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Feature ID/ Function Switch
Feature/Function Name
Description
LBFD-002028
Emergency Call
UEs running emergency call services are not selected for load balancing between inner and outer cells.
LOFD-001066
Intra-eNodeB UL CoMP
LOFD-070222
Intra-eNodeB UL CoMP Phase II
These features can improve uplink performance against interference between inner and outer cells.
LOFD-070223
UL CoMP Based on Coordinated eNodeB
LOFD-081218
Enhanced Extended QCI
UEs running push to talk (PTT) services are not selected for load balancing between inner and outer cells.
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Feature ID/ Function Switch
Feature/Function Name
Description
LAOFD-001001
LTE-A Introduction
Among carrier aggregation (CA) UEs, only those who treat the local cell as their primary serving cell (PCell) are selected for load balancing between inner and outer cells. The selection occurs only when the following condition is fulfilled: PRB usage of the serving cell – PRB usage of a neighboring cell > CellVMS.VmsPrbDiffTh + 15%.
LAOFD-120201
DL CoMP
The cell power setting must be reduced by half if inner and outer cells work for downlink coordinated multipoint transmission (DL CoMP). This affects network performance.
LEOFD-120303
eNodeB ing MTC
MLOFD-121280
eMTC Introduction
ENodeBAlgoSwitch .EutranVoip Switch
VoLTE-related features and functions
UEs running machine type communication (MTC), enhanced MTC (eMTC), or voice over Long Term Evolution (VoLTE) services are not selected for load balancing between inner and outer cells.
3.3 Requirements 3.3.1 License Requirements Operators must purchase the license listed in the following table.
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Feature ID
Feature Name
Model
License Control Item
NE
Sales Unit
LEOFD-1 21204
3D Beamform ing
LLT13DB01
3D Beamforming(FD D)
eNodeB
Per Cell
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3.3.2 Software Requirements Prerequisite Features Feature ID
Feature Name
Description
LOFD-001003
DL 4x2 MIMO
None
Mutually Exclusive Features
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Feature ID/ Function Switch
Feature/Function Name
Description
LOFD-001039
RF Channel Intelligent Shutdown
LOFD-001025
Adaptive Power Consumption
AAUs that 3D Beamforming do not these features or functions.
LOFD-001040
Low Power Consumption Mode
LOFD-003029
SFN
LOFD-081223
Extended Cell Access Radius Beyond 100km
MRFD-090202
GSM and LTE FDD Dynamic Spectrum Sharing(LTE FDD)
CellAlgoSwitch.Cel lDlCoverEnhanceSwitch
Downlink cell coverage enhancement in LBFD-070106 PDSCH Efficiency Improvement
EDlMaxTXPwrSwi tch option of the CellAlgoSwitch.DlP cAlgoSwitch parameter
Increase in the maximum cell transmit power
CellAlgoSwitch.Pw rDeratSwitch
Power derating
SINGLE_CA_PW R_SHARE_SW_F OR_4T option of the PDSCHCfg.TxChn PowerCfgSw parameter
Single carrier power sharing for 4T
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Feature ID/ Function Switch
Feature/Function Name
Dl256QamAccessor ySwitch option of the CellAlgoSwitch.Dl2 56QamAlgoSwitch parameter
DL 256QAM accessory algorithm in the LEOFD-110301 DL 256QAM feature
LOFD-001031
Extended
LOFD-001009
Extended Cell Access Radius
LOFD-001007
High Speed Mobility
LOFD-001008
Ultra High Speed Mobility
Description
These features do not work when AAUs are directly connected to RRUs.
3.3.3 Hardware Requirements eNodeB Model eNodeB Model
Feature
5900 series eNodeB
No
3900 series eNodeB
Yes
DBS3900 LampSite eNodeBs
No
BTS3912E
No
BTS3911E
No
BTS3203E
No
BTS3202E
No
Board The baseband processing unit must be UBBPe4 or higher-capability boards.
RF Module AAU3970s or AAU5972s must be used. Typically, each eNodeB requires three AAUs, each of which will serve two cells (one inner and one outer) for SSB. Each eNodeB will serve a total of six cells. Among AAUs, AAU3970s include both radio and antenna units. Power supplies must be connected to the AAUs, and the AAUs must be connected to the eNodeB baseband units Issue 02 (2017-04-26)
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using common public radio interface (RI) optical cables. For details, see AAU3970 Installation Guide. The same is true for AAU5972s in the 1.8 GHz band. AAU5972s in other bands include only antenna units and therefore must be connected to external radio units. These AAUs supply power to the radio units. For details about how to install AAU5972s, see AAU5972 Installation Guide.
3.3.4 Other Requirements For each eNodeB, three cells will change to six cells on two layers, with each cell covering a 120-degree arc, as illustrated in Figure 3-2. Figure 3-2 Network change
To adapt to this change, the following network configurations must be re-planned: l
Neighboring cells The increase in the number of cells results in more neighbor relationships. The total number of neighbor relationships for each cell may reach the maximum, requiring adjustments to the existing neighbor relationships.
l
Physical random access channel (PRACH) root sequence indexes and physical cell identifiers (PCIs) The increase in the number of cells causes PRACH root sequence indexes and PCIs to be reused a larger number of times with less distance between cells involved in the reuse. As a result, the probabilities of PRACH root sequence index conflicts and PCI conflicts rise, calling for optimization of the reuse.
l
Angles between beams It is recommended that the angle between the downtilts of the inner- and outer-cell beams be planned based on the default band-specific beamwidth, for example, 7 degrees for 1.8 GHz and 6 degrees for 2.6 GHz. To enlarge the inner-cell coverage area, reduce the downtilt angle of the inner-cell beam so that the angle between the beams decreases.
The re-planning of these configurations should also consider the reference signal (RS) power per port before and after SSB is enabled: l
If the RS power remains stable, SSB has little impact on network planning because the downtilt angle of each outer cell will be the same as that of each original cell by default. Network planning will focus on PCIs, neighboring cells, and PRACH root sequence indexes.
l
If the RS power decreases, network planning and optimization should consider downtilt angles, angles between beams, RS power, and the settings of PA and PB.
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3.4.1 Activation and Optimization Parameters Table 3-1 describes the parameters involved in feature activation. Table 3-2 describes the parameters used for function optimization. This section does not describe the parameters related to cell establishment. Table 3-1 Parameters involved in feature activation Parameter Name
Parameter ID
Setting Notes
Antenna Number
SECTOR.ANTNUM
Set this parameter to 0.
Antenna Config Mode
SECTOREQM.ANTCFGMODE
Set this parameter to BEAM.
RRU Cabinet No.
SECTOREQM.RRUCN
Set this parameter when ANTCFGMODE is set to BEAM.
RRU Subrack No.
SECTOREQM.RRUSRN
Set this parameter when ANTCFGMODE is set to BEAM.
RRU Slot No.
SECTOREQM.RRUSN
Set this parameter when ANTCFGMODE is set to BEAM.
Beam Shape
SECTOREQM.BEAMSHAPE
Set this parameter to SEC_120DEG.
Beam Azimuth Offset
SECTOREQM.BEAMAZIMUTHO FFSET
Set this parameter to None.
Beam Layer Split
SECTOREQM.BEAMLAYERSPLI T
Set this parameter to INNER_LAYER and OUTER_LAYER for two cells served by each AAU.
Antenna Number
SECTOREQM.ANTNUM
Set this parameter to 0.
Table 3-2 Parameters used for function optimization
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Parameter Name
Parameter ID
Setting Notes
Vertical Multiple Sectors Algorithm Switch
CellAlgoSwitch.VmsSwitch
If inner and outer cell loads are imbalanced, you are advised to select the PrbBalanceSw option of this parameter to increase downlink cell capacity.
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Parameter Name
Parameter ID
Setting Notes
VMS A3 Offset
CellVMS.VmsA3Offset
Set this parameter based on site conditions.
Max UE Number for Handover Out
CellVMS.VmsHoUeNumTh
Set this parameter based on site conditions.
Load Difference Threshold
CellVMS.VmsPrbDiffTh
Set this parameter based on site conditions.
Load Balancing Threshold
CellVMS.VmsPrbLoadTh
Set this parameter based on site conditions.
MML Command Example for Feature Activation //Removing original cell configurations RMV EUCELLSECTOREQM: LocalCellId=0, SectorEqmId=0; RMV CELL: LocalCellId=0; RMV SECTOREQM: SECTOREQMID=0; RMV SECTOR: SECTORID=0; //Adding back the following information as RMV CELL has been executed ADD RRUCHAIN: RCN=10, TT=CHAIN, BM=COLD, AT=LOCALPORT, HSRN=0, HSN=2, HPN=0; //Adding an AAU ADD RRU: CN=0, SRN=60, SN=0, TP=TRUNK, RCN=0, PS=0, RT=AIRU, RS=LO, RXNUM=8, TXNUM=8, MNTMODE=NORMAL, RFDWROFFALMDETECTSW=OFF; //Adding sectors ADD SECTOR: SECTORID=0, ANTNUM=0, CREATESECTOREQM=FALSE; ADD SECTOR: SECTORID=1, ANTNUM=0, CREATESECTOREQM=FALSE; //Adding sector equipment //For the inner cell ADD SECTOREQM: SECTOREQMID=0, SECTORID=0, ANTCFGMODE=BEAM, RRUSN=0, BEAMSHAPE=SEC_120DEG, BEAMLAYERSPLIT=INNER_LAYER, //For the outer cell ADD SECTOREQM: SECTOREQMID=1, SECTORID=1, ANTCFGMODE=BEAM, RRUSN=0, BEAMSHAPE=SEC_120DEG, BEAMLAYERSPLIT=OUTER_LAYER,
RRUCN=0, RRUSRN=60, BEAMAZIMUTHOFFSET=None; RRUCN=0, RRUSRN=60, BEAMAZIMUTHOFFSET=None;
//Adding the cells ADD CELL: LocalCellId=0, CellName="cell0", FreqBand=7, UlEarfcnCfgInd=NOT_CFG, DlEarfcn=2850, UlBandWidth=CELL_BW_N25, DlBandWidth=CELL_BW_N25, CellId=60, PhyCellId=60, FddTddInd=CELL_FDD, EuCellStandbyMode=ACTIVE, RootSequenceIdx=0, CustomizedBandWidthCfgInd=NOT_CFG, EmergencyAreaIdCfgInd=NOT_CFG, UePowerMaxCfgInd=NOT_CFG, MultiRruCellFlag=BOOLEAN_FALSE, TxRxMode=4T4R; ADD CELL: LocalCellId=1, CellName="cell1", FreqBand=7, UlEarfcnCfgInd=NOT_CFG, DlEarfcn=2850, UlBandWidth=CELL_BW_N25, DlBandWidth=CELL_BW_N25, CellId=60, PhyCellId=60, FddTddInd=CELL_FDD, EuCellStandbyMode=ACTIVE, RootSequenceIdx=0, CustomizedBandWidthCfgInd=NOT_CFG, EmergencyAreaIdCfgInd=NOT_CFG, UePowerMaxCfgInd=NOT_CFG, MultiRruCellFlag=BOOLEAN_FALSE, TxRxMode=4T4R; //Mapping sector equipment to the cells ADD EUCELLSECTOREQM: LocalCellId=0, SectorEqmId=0; ADD EUCELLSECTOREQM: LocalCellId=1, SectorEqmId=1; /*Adding RET antennas for the cells (Pay attention to the information provided in the note at the end of this section.)*/ ADD RET: DEVICENO=0, CTRLCN=0, CTRLSRN=60, CTRLSN=0, RETTYPE=SINGLE_RET, SCENARIO=DAISY_CHAIN, VENDORCODE="HW", SERIALNO="M2194G30002A01Ay1"; ADD RET: DEVICENO=1, CTRLCN=0, CTRLSRN=60, CTRLSN=0, RETTYPE=SINGLE_RET, SCENARIO=DAISY_CHAIN, VENDORCODE="HW", SERIALNO="M2194G30001B01By1";
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/*Setting downtilt angles for the RET antennas (Typically, downtilt angle for the inner cell = downtilt angle for the outer cell + 6 degrees)*/ MOD RETSUBUNIT:DEVICENO=0,SUBUNITNO=1,TILT=12; MOD RETSUBUNIT:DEVICENO=1,SUBUNITNO=1,TILT=6; //Setting MIMO transmission mode for the cells MOD CELLMIMOPARACFG:LOCALCELLID=0,MIMOADAPTIVESWITCH=CL_ADAPTIVE; MOD CELLMIMOPARACFG:LOCALCELLID=1,MIMOADAPTIVESWITCH=CL_ADAPTIVE; //Adding back the following information as RMV CELL has been executed ADD CELLOP: LocalCellId=0, TrackingAreaId=0, MMECfgNum=CELL_MME_CFG_NUM_0; ADD CELLOP: LocalCellId=1, TrackingAreaId=0, MMECfgNum=CELL_MME_CFG_NUM_0; /*Setting the channel power MOD PDSCHCFG: MOD PDSCHCFG:
single-channel power based on site conditions to ensure that singledoes not exceed 18.5 W*/ LocalCellId=0, ReferenceSignalPwr=139; LocalCellId=1, ReferenceSignalPwr=139;
//Activating the cells ACT CELL:LOCALCELLID=0; ACT CELL:LOCALCELLID=1; NOTE
The serial number of each RET antenna can be queried by running the SCN ALD command. If the sixth digit from right to left of a serial number is A (for example, M2194G30002A01Ay1), the RET antenna must be configured to serve the inner cell. If the digit is B (for example, M2194G30001B01By1), the RET antenna must be configured to serve the outer cell.
MML Command Example for Parameter Optimization Unbalanced UE distribution or cell-level PRB usage between the inner and outer cells may limit the gains produced by this feature. If this is the case, use either of the following methods to increase feature gains: l
Adjust the downtilt angles for the cells by setting the RETSUBUNIT.TILT parameter. /*Setting downtilt angles for the RET antennas (Typically, downtilt angle for the inner cell = downtilt angle for the outer cell + 6 degrees)*/ MOD RETSUBUNIT:DEVICENO=0,SUBUNITNO=1,TILT=12; MOD RETSUBUNIT:DEVICENO=1,SUBUNITNO=1,TILT=6;
l
Enable load balancing between inner and outer cells. //Turning on the load balancing switch MOD CELLALGOSWITCH:LOCALCELLID=0,VMSSWITCH=PRBBALANCESW-1; MOD CELLALGOSWITCH:LOCALCELLID=1,VMSSWITCH=PRBBALANCESW-1; //Setting load balancing parameters MOD CELLVMS:LOCALCELLID=0,VMSHOUENUMTH=1,VMSPRBDIFFTH=40,VMSPRBLOADTH=80,VMSA3OFFS ET=3; MOD CELLVMS:LOCALCELLID=1,VMSHOUENUMTH=1,VMSPRBDIFFTH=40,VMSPRBLOADTH=80,VMSA3OFFS ET=3;
3.4.2 Observation and Monitoring Activation Observation l
Run the DSP CELL command. If the inner and outer cells are available, SSB has taken effect.
l
Observe the following counters:
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–
L.HHO.IntraFreq.Load.ExecSuccOut
–
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If either of them produces a non-zero value, load balancing between inner and outer cells has taken effect.
Network Monitoring l
Cell traffic volume increases. Calculate the percent increase in the traffic volume when PRB usage remains unchanged. Traffic volume in the original cell = L.Thrp.bits.DL Traffic volume after SSB is used = Sum of the L.Thrp.bits.DL counter values for the inner and outer cells
l
Average UE throughput increases. Calculate the percent increase in the average UE throughput when cell traffic volume remains unchanged. Average UE throughput in the original cell = (L.Thrp.bits.DL – L.Thrp.bits.DL.LastTTI)/L.Thrp.Time.DL.RmvLastTTI Average UE throughput after SSB is used = (Sum of L.Thrp.bits.DL of the inner and outer cells – Sum of L.Thrp.bits.DL.LastTTI of the inner and outer cells)/Sum of L.Thrp.Time.DL.RmvLastTTI of the inner and outer cells
l
Cell-edge UE throughput increases. Calculate the percent increase in the cell-edge UE throughput when cell traffic volume remains unchanged. Cell-edge UE throughput in the original cell = (L.Thrp.bits.DL.BorderUE – L.Thrp.bits.DL.LastTTI.BorderUE)/L.Thrp.Time.DL.RmvLastTTI.BorderUE Cell-edge UE throughput after SSB is used = (Sum of L.Thrp.bits.DL.BorderUE of the inner and outer cells – Sum of L.Thrp.bits.DL.LastTTI.BorderUE of the inner and outer cells)/Sum of L.Thrp.Time.DL.RmvLastTTI.BorderUE of the inner and outer cells
l
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Other aspects –
The average downlink PRB usage of a single cell may decrease, while the eNodeB traffic volume increases.
–
The percentage of times rank 1 is reported will increase, resulting in a lower probability that any single UE will achieve the peak data rate.
–
The increase in the number of cells results in more cell edge areas and therefore more handovers. The handover success rate may decrease, and the number of RRC connection reestablishments and the service drop rate may rise.
Counter ID
Counter Name
Counter Description
1526745677
L.HHO.IntraFreq.Load.E xecSuccOut
Number of successful loadbased intra-frequency handover executions
1526745676
L.HHO.IntraFreq.Load.E xecAttOut
Number of load-based intrafrequency handover execution attempts
1526728261
L.Thrp.bits.DL
Total downlink traffic volume for PD SDUs in a cell
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Counter ID
Counter Name
Counter Description
1526729005
L.Thrp.bits.DL.LastTTI
Downlink traffic volume sent in the last TTI for PD SDUs before the buffer is empty
1526729015
L.Thrp.Time.DL.RmvLast TTI
Data transmit duration except the last TTI before the downlink buffer is empty
1526728997
L.Thrp.Time.Cell.DL.High Precision
Total duration of downlink data transmission in a cell (with the precision of 1 ms)
1526737755
L.Thrp.bits.DL.BorderUE
Downlink PD-layer traffic volume sent for CEUs in a cell
1526737759
L.Thrp.Time.DL.RmvLast TTI.BorderUE
Data transmission duration for CEUs except the last TTI before the downlink buffer is empty
1526727378
L.Traffic..Avg
Average number of s in a cell
1526730141
L.ChMeas.RI.Rank1
Number of times rank 1 is reported
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
4
Parameters
Table 4-1 Parameters MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
RETSU BUNIT
TILT
MOD RETSU BUNIT
MRFD210601
Connect ion with TMA (Tower Mounte d Amplifi er)
Meaning: Indicates the antenna tilt of the RET subunit. If this parameter is set to 32767, it is invalid and the actual tilt is not changed.
MOD RETTIL T LST RETSU BUNIT
MRFD210602 WRFD060003 LBFD-0 01024 / TDLBF D-00102 4/ MLBFD -120004 21
GUI Value Range: -300~300,32767 Unit: 0.1degree Actual Value Range: -30~30,3276.7, step:0.1 Default Value: 32767
Remote Electrica l Tilt Same Band Antenna Sharing Unit (900Mh z) Remote Electrica l Tilt Control
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellAlg oSwitch
VmsSwi tch
MOD CELLA LGOSW ITCH
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning:
LST CELLA LGOSW ITCH
Indicates whether to enable algorithms related to vertical multiple sectors (VMS). This parameter applies only to LTE FDD. PrbBalanceSw: If this option is selected, load balancing between inner and outer cells is enabled. If this option is deselected, load balancing between inner and outer cells is disabled. GUI Value Range: PrbBalanceSw(PrbBalanceSw) Unit: None Actual Value Range: PrbBalanceSw Default Value: PrbBalanceSw:Off
CellVM S
VmsHo UeNum Th
MOD CELLV MS
LEOFD111304
LST CELLV MS
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the maximum number of UEs that can be transferred within 10s. This parameter is used to prevent too many UEs from being transferred at a time to neighboring cells to cause significant impact on neighboring cells. This parameter applies only to LTE FDD. GUI Value Range: 1~10 Unit: None Actual Value Range: 1~10 Default Value: 1
CellVM S
VmsPrb LoadTh
MOD CELLV MS LST CELLV MS
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the PRB usage threshold for triggering MLB. MLB is triggered if the PRB usage of the serving cell is higher than this parameter value. This parameter applies only to LTE FDD. GUI Value Range: 1~99 Unit: % Actual Value Range: 1~99 Default Value: 80
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellVM S
VmsPrb DiffTh
MOD CELLV MS
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the threshold of PRB usage difference between the serving cell and a neighboring cell. When the result of the PRB usage of the serving cell minus that of a neighboring cell in a cluster is greater than the parameter value, this neighboring cell can be a target cell for MLB. This parameter applies only to LTE FDD.
LST CELLV MS
GUI Value Range: 1~99 Unit: % Actual Value Range: 1~99 Default Value: 40 IntraFre qHoGro up
IntraFre qHoA3 Offset
ADD INTRA FREQH OGROU P MOD INTRA FREQH OGROU P
LBFD-0 0201801 / TDLBF D-00201 801
Coverag e Based Intrafrequenc y Handov er
GUI Value Range: -30~30 Unit: 0.5dB Actual Value Range: -15~15
LST INTRA FREQH OGROU P CellVM S
VmsA3 Offset
MOD CELLV MS LST CELLV MS
Meaning: Indicates the offset for event A3. If the parameter is set to a large value, an intra-frequency handover is performed only when the signal quality of the neighboring cell is significantly better than that of the serving cell and other triggering conditions are met. For details, see 3GPP TS 36.331. This parameter applies only to LTE FDD and LTE TDD.
Default Value: 2
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the intra-frequency handover offset between the inner and outer cells. This parameter applies only to LTE FDD. GUI Value Range: 0~20 Unit: dB Actual Value Range: 0~20 Default Value: 3
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
ENodeB AlgoSwi tch
EutranV oipSupp ortSwitc h
MOD ENODE BALGO SWITC H
None
None
Meaning: Indicates whether the VoIP services are enabled in the E-UTRAN cell. This parameter is used for determining whether the establishment, handover in, ission, and reestablishment of VoIP services is allowed. This parameter applies only to LTE FDD and LTE TDD.
LST ENODE BALGO SWITC H
GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)
CellAlg oSwitch
CellDlC overEnh anceSwi tch
MOD CELLA LGOSW ITCH LST CELLA LGOSW ITCH
LBFD-0 70106
PDSCH Efficien cy Improve ment
Meaning: DlCellCoverEnhanceAlgoSw: Indicates whether to enable cell coverage enhancement. Enabling this function can increase the throughput of cell edge UEs (CEUs) and improve cell coverage. AdptCellEdgePwrAllocSw: Indicates whether to enable adaptive power matching. Enabling this function in a lightly loaded wide coverage cell helps improve the performance of CEUs. This function is enabled only when this option is selected. This option applies only to LTE FDD. GUI Value Range: DlCellCoverEnhanceAlgoSw(DlCellCoverEnhanceAlgoSw), AdptCellEdgePwrAllocSw(AdptCellEdgePwrAllocSw) Unit: None Actual Value Range: DlCellCoverEnhanceAlgoSw, AdptCellEdgePwrAllocSw Default Value: DlCellCoverEnhanceAlgoSw:off, AdptCellEdgePwrAllocSw:off
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellAlg oSwitch
DlPcAlg oSwitch
MOD CELLA LGOSW ITCH
LBFD-0 02003 / TDLBF D-00200 3
Physical Channel Manage ment
Meaning:
Broadca st of system informat ion
PdschSpsPcSwitch: If this option is deselected, power is allocated evenly during semi-persistent scheduling on the PDSCH. If this option is selected, power control is applied during semi-persistent scheduling on the PDSCH, ensuring quality (indicated by IBLER) of VoIP services in the QPSK modulation scheme. This option applies only to LTE FDD and LTE TDD.
LST CELLA LGOSW ITCH
LBFD-0 02009 / TDLBF D-00200 9 LBFD-0 02016 / TDLBF D-00201 6 TDLOF D-00104 9 TDLOF D-00106 1 LOFD-0 01051
Dynami c Downlin k Power Allocati on Single Streami ng Beamfor ming Dual Streami ng Beamfor ming Compac t Bandwi dth
Indicates whether to enable power control for the PDSCH, PDCCH, and PHICH.
PhichInnerLoopPcSwitch: Indicates whether to enable PHICH inner-loop power control. If this option is deselected, only the initial transmit power for the PHICH is set. If this option is selected, the eNodeB controls the physical channel transmit power for the convergence of the receive SINR to the target SINR. This option applies only to LTE FDD and LTE TDD. PdcchPcSwitch: Indicates whether to enable PDCCH power control. If this option is deselected, power is allocated evenly on the PDCCH. If this option is selected, the PDCCH power is adjusted dynamically. This option applies only to LTE FDD and LTE TDD. EDlMaxTXPwrSwitch: If this option is deselected, the maximum transmit power of the cell is determined by the RS power and the scaling factor indexes Pa and Pb. If this option is selected, the maximum transmit power of the cell can be increased to improve the cell RB usage. This option has no impact on 10 MHz, 15 MHz and 20 MHz LTE TDD cells. This option applies only to LTE FDD. BFModePwrSwitch: Indicates whether to enable power optimization for beamforming UEs. If this option is deselected, the original power allocation scheme is adopted for beamforming UEs. If this option is selected, the eNodeB uses the configured power headroom to increase the power for beamforming UEs. This option applies only to LTE TDD. SigPowerIncreaseSwitch: Indicates whether to enable signaling power improvement. If this option is selected, the PDSCH transmit power increases when scheduling is performed for downlink retransmission of signaling during network entry. This option applies only to LTE TDD.
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eRAN 3D Beamforming Feature Parameter Description
MO
Parame ter ID
MML Comma nd
Feature ID
4 Parameters
Feature Name
Description
BFModeAdptPwrSwitch: Indicates whether to enable power adaptation for beamforming UEs. If this option is selected, the eNodeB adaptively increases the power of beamforming UEs in the cell based on the available power of the RRU and loads at neighboring cell edges. In this way, the average cell throughput increases. This option applies only to LTE TDD. BfEnhChnPwrFormSwitch: Indicates whether to enable enhanced channel power forming for beamforming. If this option is selected, the eNodeB determines the TX power differences between antennas based on the Eigen beamforming weights of the antennas, determines the channel power headroom based on the percentage of the number of idle RBs available in the current TTI in downlink scheduling, and flexibly allocates TX power to each channel of the RRU. This option applies only to LTE TDD. DlNonStandardBwMaxPwrSwitch: If this option is deselected, the eNodeB determines the maximum transmit power of a cell of a non-standard bandwidth based on the number of available downlink RBs for a standard bandwidth. If this option is selected, the eNodeB determines the maximum power of a cell of a non-standard bandwidth based on the number of available downlink RBs for a customized bandwidth. Changing the setting of this option will change the calculated total power and require cell reactivation. This option applies only to LTE FDD. GUI Value Range: PdschSpsPcSwitch, PhichInnerLoopPcSwitch, PdcchPcSwitch, EDlMaxTXPwrSwitch, BFModePwrSwitch, SigPowerIncreaseSwitch, BFModeAdptPwrSwitch, BfEnhChnPwrFormSwitch(BfEnhChnPwrFormSwitch), DlNonStandardBwMaxPwrSwitch(DlNonStandardBwMaxPwrSwitch) Unit: None Actual Value Range: PdschSpsPcSwitch, PhichInnerLoopPcSwitch, PdcchPcSwitch, EDlMaxTXPwrSwitch, BFModePwrSwitch, SigPowerIncreaseSwitch, BFModeAdptPwrSwitch, BfEnhChnPwrFormSwitch, DlNonStandardBwMaxPwrSwitch Default Value: PdschSpsPcSwitch:Off, PhichInnerLoopPcSwitch:Off, PdcchPcSwitch:On,
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eRAN 3D Beamforming Feature Parameter Description
MO
Parame ter ID
MML Comma nd
Feature ID
4 Parameters
Feature Name
Description
EDlMaxTXPwrSwitch:Off, BFModePwrSwitch:Off, SigPowerIncreaseSwitch:Off, BFModeAdptPwrSwitch:Off, BfEnhChnPwrFormSwitch:Off, DlNonStandardBwMaxPwrSwitch:Off CellAlg oSwitch
PwrDera tSwitch
MOD CELLA LGOSW ITCH
None
None
LST CELLA LGOSW ITCH
Meaning: Indicates whether to apply the power decrease mechanism on reference signal (RS) power and physical synchronization channel (PSCH) power. If this parameter is set OFF, the physical downlink shared channel (PDSCH) transmit power is lowered, the RS power and PSCH power are not lowered. If this parameter is set to ON, all of the PDSCH power, RS power, and PSCH power are lowered. This parameter applies only to LTE FDD and LTE TDD. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)
PDSCH Cfg
TxChnP owerCfg Sw
MOD PDSCH CFG LST PDSCH CFG
LOFD-0 01003
DL 4x2 MIMO
LOFD-0 01060
DL 4x4 MIMO
LEOFD111305
Virtual 4T4R
Meaning: Indicates whether to enable algorithms related to transmit channel power configurations. SINGLE_CA_PWR_SHARE_SW_FOR_4T: Indicates whether to enable single carrier power sharing for 4T. This option applies only to LTE FDD. GUI Value Range: SINGLE_CA_PWR_SHARE_SW_FOR_4T(SINGLE _CA_PWR_SHARE_SW_FOR_4T) Unit: None Actual Value Range: SINGLE_CA_PWR_SHARE_SW_FOR_4T Default Value: SINGLE_CA_PWR_SHARE_SW_FOR_4T:Off
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellAlg oSwitch
Dl256Q amAlgo Switch
MOD CELLA LGOSW ITCH
LBFD-0 02025 / TDLBF D-00202 5
Basic Scheduli ng
Meaning:
LST CELLA LGOSW ITCH
LBFD-0 0101502 / TDLBF D-00101 502
Dynami c Scheduli ng DL 256QA M
LAOFD -090201 / TDLAO FD-090 201 / LEOFD110301
Indicates whether to enable the algorithms related to downlink (DL) 256 quadrature amplitude modulation (256QAM). Dl256QamSwitch: Indicates whether to enable DL 256QAM. If this option is selected, DL 256QAM is enabled, and the highest-order DL modulation scheme is 256QAM for UEs that DL 256QAM. If this option is deselected, DL 256QAM is disabled and the highest-order DL modulation scheme is 64QAM. The feature takes effect only when a UBBP or LBBPd board is configured. Dl256QamAccessorySwitch: Indicates whether to enable Downlink 256QAM Accessory. Downlink 256QAM Accessory is enabled only if this option is selected. When this option is selected, error vector magnitude (EVM) is optimized for 256QAM in the TTIs in which DL 256QAM takes effect. The feature takes effect only when a UBBP board is configured. GUI Value Range: Dl256QamSwitch(Dl256QamSwitch), Dl256QamAccessorySwitch(Dl256QamAccessorySwi tch) Unit: None Actual Value Range: Dl256QamSwitch, Dl256QamAccessorySwitch Default Value: Dl256QamSwitch:Off, Dl256QamAccessorySwitch:Off
SECTO REQM
ANTCF GMOD E
ADD SECTO REQM MOD SECTO REQM LST SECTO REQM
None
None
Meaning: Indicates the antenna configuration mode of sector equipment. If this parameter is set to ANTENNAPORT, the antenna port list must be configured. If this parameter is set to BEAM, RRU and beamforming parameters must be configured. This parameter can be set to BEAM only on the LTE side. GUI Value Range: ANTENNAPORT(ANTENNAPORT), BEAM(BEAM) Unit: None Actual Value Range: ANTENNAPORT, BEAM Default Value: ANTENNAPORT(ANTENNAPORT)
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
SECTO REQM
RRUCN
ADD SECTO REQM
None
None
Meaning: Indicates the cabinet number of the RRU to which a sector antenna is connected. The parameter takes effect only in LTE.
MOD SECTO REQM
GUI Value Range: 0~62 Unit: None Actual Value Range: 0~62
LST SECTO REQM SECTO REQM
RRUSR N
ADD SECTO REQM
Default Value: None
None
None
MOD SECTO REQM
GUI Value Range: 4~5,60~254 Unit: None Actual Value Range: 4~5,60~254
LST SECTO REQM SECTO REQM
RRUSN
ADD SECTO REQM
Default Value: None
None
None
MOD SECTO REQM
BEAMS HAPE
ADD SECTO REQM MOD SECTO REQM LST SECTO REQM
Meaning: Indicates the slot number of the RRU to which a sector antenna is connected. The parameter takes effect only in LTE. GUI Value Range: 0~8 Unit: None Actual Value Range: 0~8
LST SECTO REQM SECTO REQM
Meaning: Indicates the subrack number of the RRU to which a sector antenna is connected. The parameter takes effect only in LTE.
Default Value: None
None
None
Meaning: Indicates the beam coverage shape of sector equipment, specified by the expanding angle of a sector. The parameter takes effect only in LTE. GUI Value Range: SEC_120DEG(SEC_120DEG), SEC_60DEG(SEC_60DEG), SEC_90DEG(SEC_90DEG), SEC_180DEG(SEC_180DEG) Unit: None Actual Value Range: SEC_120DEG, SEC_60DEG, SEC_90DEG, SEC_180DEG Default Value: None
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
SECTO REQM
BEAM AZIMU THOFF SET
ADD SECTO REQM
None
None
Meaning: Indicates the azimuth offset of the main lobe direction of horizontal beam coverage and the RF module direction. If this parameter is set to None, the main lobe of beams and RF module are in the same direction. If this parameter is set to LEFT_HALF, the azimuth deflects 1/2 sector angle counterclockwise. If this parameter is set to RIGHT_HALF, the azimuth deflects 1/2 sector angle clockwise. For example, the horizontal azimuth deflects 60° counterclockwise with BEAMSHAPE set to SEC_120DEG and BEAMAZIMUTHOFFSET set to LEFT_HALF. The parameter takes effect only in LTE.
MOD SECTO REQM LST SECTO REQM
GUI Value Range: None(None), LEFT_HALF(LEFT_HALF), RIGHT_HALF(RIGHT_HALF) Unit: None Actual Value Range: None, LEFT_HALF, RIGHT_HALF Default Value: None SECTO REQM
BEAML AYERS PLIT
ADD SECTO REQM MOD SECTO REQM LST SECTO REQM
None
None
Meaning: Indicates the vertical beam split. If this parameter is set to None, the vertical coverage area is not split. If this parameter is set to INNER_LAYER, the inner sector is covered after a beam layer split. If this parameter is set to OUTER_LAYER, the outer sector is covered after a beam layer split. The parameter takes effect only in LTE. GUI Value Range: None(None), INNER_LAYER(INNER_LAYER), OUTER_LAYER(OUTER_LAYER) Unit: None Actual Value Range: None, INNER_LAYER, OUTER_LAYER Default Value: None
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eRAN 3D Beamforming Feature Parameter Description
5 Counters
5
Counters
Table 5-1 Counters Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
1526726740
L.ChMeas.PRB.DL .Used.Avg
Average number of used PDSCH PRBs
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None
Adaptive SFN/ SDMA
LTE: LBFD-002025
Virtual 4T4R
TDLBFD-002025 LOFD-070205 LEOFD-111305 1526727378
L.Traffic..Avg
Average number of s in a cell
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002007
RRC Connection Management RRC Connection Management
TDLBFD-002007 1526728261
L.Thrp.bits.DL
Total downlink traffic volume for PD SDUs in a cell
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025
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eRAN 3D Beamforming Feature Parameter Description
5 Counters
Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
1526728433
L.ChMeas.PRB.DL .Avail
Number of available downlink PRBs
Multi-mode: MRFD-090202 GSM: None
GSM and LTE FDD Dynamic Spectrum Sharing(LTE FDD)
UMTS: None
LTE-A Introduction
LTE: LAOFD-001001
Carrier Aggregation for Downlink 2CC in 40MHz
LAOFD-001002 LOFD-070205 TDLOFD-001075 LEOFD-111305 1526728997
L.Thrp.Time.Cell.D L.HighPrecision
Total duration of downlink data transmission in a cell (with the precision of 1 ms)
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Adaptive SFN/ SDMA SFN Virtual 4T4R Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025 1526729005
L.Thrp.bits.DL.Last TTI
Downlink traffic volume sent in the last TTI for PD SDUs before the buffer is empty
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025 1526729015
L.Thrp.Time.DL.R mvLastTTI
Data transmit duration except the last TTI before the downlink buffer is empty
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025
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eRAN 3D Beamforming Feature Parameter Description
5 Counters
Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
1526730141
L.ChMeas.RI.Rank 1
Number of times rank 1 is reported
Multi-mode: None
Basic Scheduling
GSM: None
DL 2x2 MIMO
UMTS: None
DL 4x2 MIMO
LTE: LBFD-002025
Basic Scheduling DL 2x2 MIMO
LOFD-001001 LOFD-001003 TDLBFD-002025 TDLOFD-001001 1526737755
L.Thrp.bits.DL.Bor derUE
Downlink PDlayer traffic volume sent for CEUs in a cell
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None LTE: LBFD-002025 TDLBFD-002025
1526737758
L.Thrp.bits.DL.Last TTI.BorderUE
Downlink PDlayer traffic volume sent in the last TTI for CEUs before the buffer is empty in a cell
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None LTE: LBFD-002025 TDLBFD-002025
1526737759
L.Thrp.Time.DL.R mvLastTTI.Border UE
Data transmission duration for CEUs except the last TTI before the downlink buffer is empty
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None LTE: LBFD-002025 TDLBFD-002025
1526745676
L.HHO.IntraFreq.L oad.ExecAttOut
Number of loadbased intrafrequency handover execution attempts
None
None
1526745677
L.HHO.IntraFreq.L oad.ExecSuccOut
Number of successful loadbased intrafrequency handover executions
None
None
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eRAN 3D Beamforming Feature Parameter Description
6 Glossary
6
Glossary
None
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eRAN 3D Beamforming Feature Parameter Description
7 Reference Documents
7
Reference Documents
ALD Management Feature Parameter Description
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3D Beamforming Feature Parameter Description Issue
02
Date
2017-04-26
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2017. 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]
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eRAN 3D Beamforming Feature Parameter Description
Contents
Contents 1 About This Document.................................................................................................................. 1 1.1 Scope.............................................................................................................................................................................. 1 1.2 Intended Audience.......................................................................................................................................................... 1 1.3 Change History............................................................................................................................................................... 1 1.4 Differences Between eNodeB Types.............................................................................................................................. 2
2 Overview......................................................................................................................................... 3 3 Technical Description...................................................................................................................4 3.1 Principles........................................................................................................................................................................ 4 3.2 Network Analysis........................................................................................................................................................... 5 3.2.1 Benefit Analysis.......................................................................................................................................................... 5 3.2.2 Impact Analysis........................................................................................................................................................... 6 3.3 Requirements.................................................................................................................................................................. 7 3.3.1 License Requirements..................................................................................................................................................7 3.3.2 Software Requirements................................................................................................................................................8 3.3.3 Hardware Requirements.............................................................................................................................................. 9 3.3.4 Other Requirements................................................................................................................................................... 10 3.4 Operation and Maintenance..........................................................................................................................................10 3.4.1 Activation and Optimization......................................................................................................................................11 3.4.2 Observation and Monitoring......................................................................................................................................13
4 Parameters..................................................................................................................................... 16 5 Counters........................................................................................................................................ 26 6 Glossary......................................................................................................................................... 29 7 Reference Documents................................................................................................................. 30
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ii
eRAN 3D Beamforming Feature Parameter Description
1 About This Document
1
About This Document
1.1 Scope This document describes LEOFD-121204 3D Beamforming, including its technical principles, related features, network impact, and engineering guidelines. Any parameters, alarms, counters, or managed objects (MOs) described herein apply only to the corresponding software release. For future software releases, refer to the corresponding updated product documentation. This document applies only to LTE FDD. Any "LTE" in this document refers to LTE FDD, and "eNodeB" refers to LTE FDD eNodeB.
1.2 Intended Audience This document is intended for personnel who: l
Need to understand the features described herein
l
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: l
Feature change Changes in features and parameters of a specified version as well as the affected entities
l
Editorial change Changes in wording or addition of information and any related parameters affected by editorial changes. Editorial change does not specify the affected entities.
eRAN12.1 02 (2017-04-26) This issue includes the following changes. Issue 02 (2017-04-26)
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eRAN 3D Beamforming Feature Parameter Description
1 About This Document
Change Type
Change Description
Parameter Change
Feature change
Updated hardware requirements. For details, see 3.3.3 Hardware Requirements.
None
Updated mutually exclusive features. For details, see 3.3.2 Software Requirements. Editorial change
Revised the organization and description of this document.
None
eRAN12.1 01 (2017-03-08) This issue includes the following changes. Change Type
Change Description
Parameter Change
Feature change
Updated hardware requirements. For details, see 3.3.3 Hardware Requirements.
None
Editorial change
Revised technical description.
None
eRAN12.1 Draft A (2016-12-30) This is the first release of this document.
1.4 Differences Between eNodeB Types The feature described in this document applies only to macro eNodeBs.
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eRAN 3D Beamforming Feature Parameter Description
2 Overview
2
Overview
Based on the increasing traffic volume in densely populated urban areas, the capacity requirements in next few years are predicted to increase threefold to sixfold, and the spectrum resources in the 1.8 GHz to 2.6 GHz bands are so limited that they should be fully utilized. The 3D Beamforming feature uses active antenna units (AAUs) to provide the Static Shared Beam (SSB) function, which generates two beams on the vertical plane at such an AAU.
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3
Technical Description
3.1 Principles SSB uses beamforming to generate two cells, inner and outer, at an AAU on the vertical plane. The two cells operate on the same frequency. This function is used for capacity expansion at hotspots. It is an option for operators that require capacity expansion but have no additional frequencies available. NOTE
This function is mainly used for downlink capacity expansion, for example, when there is a cell resource shortage.
The RETSUBUNIT.TILT parameter is set to different values for different remote electrical tilt (RET) subunits, allowing SSB to generate two beams on the vertical plane. The two beams are used for the inner and outer cells, as shown in Figure 3-1. Figure 3-1 SSB
If the PrbBalanceSw option of the CellAlgoSwitch.VmsSwitch parameter is selected, load balancing between inner and outer cells is enabled. The CellVMS.VmsHoUeNumTh parameter specifies the maximum number of UEs that can be handed over from a given cell within 10s. Issue 02 (2017-04-26)
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eRAN 3D Beamforming Feature Parameter Description
3 Technical Description
For load balancing, the eNodeB instructs UEs that have just accessed the inner or outer cell to perform intra-frequency measurements when both of the following conditions are met: l
The downlink physical resource block (PRB) usage of the serving cell is greater than the value of the CellVMS.VmsPrbLoadTh parameter.
l
The downlink PRB usage of the serving cell minus that of a neighboring cell is greater than the value of the CellVMS.VmsPrbDiffTh parameter.
The eNodeB selects UEs that each meet both of the following conditions for load balancing: l
The UE reports intra-frequency handover event A3, the offset for which is equal to IntraFreqHoGroup.IntraFreqHoA3Offset minus CellVMS.VmsA3Offset. For the definition of event A3, see Intra-RAT Mobility Management in Connected Mode Feature Parameter Description.
l
The PRB usage by the UE is greater than 2%.
3.2 Network Analysis 3.2.1 Benefit Analysis The SSB function increases system capacity considerably in urban areas where there is contiguous coverage. In a cell served by an eNodeB with a 2T2R 3-sector configuration, SSB increases the downlink cell traffic volume and downlink average UE throughput by up to 100% and increases the downlink cell-edge UE throughput by up to 80%. The increases are closely related to cell loads, whether the cells using SSB provide contiguous coverage, and how UEs are distributed across inner and outer cells. The gains of this function are higher if the cell load is higher, the cell coverage is more contiguous, and the percentage of UEs in each inner cell is closer to 50%. When the available bandwidth is less than 5 MHz, SSB works only when AAUs are directly connected to baseband units (BBUs). A smaller available bandwidth causes less accurate channel calibration and therefore fewer gains produced by this function. This function is suitable for high-traffic scenarios in urban areas. It is recommended when the busy-hour PRB usage of the cells is at least 50%. Do not use this feature when the inter-site distance exceeds 500 m. Downlink PRB usage = L.ChMeas.PRB.DL.Used.Avg/L.ChMeas.PRB.DL.Avail x 100%
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Counter ID
Counter Name
Counter Description
1526726740
L.ChMeas.PRB.DL.Used. Avg
Average number of used PDSCH PRBs
1526728433
L.ChMeas.PRB.DL.Avail
Number of available downlink PRBs
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3.2.2 Impact Analysis Network Impact l
-perceived downlink throughput The -perceived throughput may decrease in idle periods, for example, when the PRB usage is less than 20%.
l
Downlink peak data rate In a cell served by an eNodeB with a 2T2R 3-sector configuration, SSB causes an increase in the percentage of times rank 1 is reported and therefore a lower percentage of UEs that achieve their peak data rates in the case of downlink 2x2 multiple-input multiple-output (MIMO). In addition, UEs cannot reach their expected peak data rates in the case of downlink 4x4 MIMO.
l
Downlink coverage On a network with non-contiguous coverage from cells generated by using SSB, if SSB causes cell power to be lower than neighboring 2T2R cell power, the local cell coverage shrinks.
l
-perceived uplink throughput Load balancing between inner and outer cells is triggered by downlink PRB usage. When traffic is imbalanced between uplink and downlink and there are sufficient uplink PRBs, -perceived uplink throughput may decrease after the load balancing.
l
Other network performance indicators In an eNodeB with a 2T2R 3-sector configuration, SSB causes an increase in the number of cells. This may result in a lower handover success rate, more RRC connection reestablishments, and a higher service drop rate than the performance indicators before SSB is used.
Impacted Features
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Feature ID/ Function Switch
Feature/Function Name
Description
LBFD-002028
Emergency Call
UEs running emergency call services are not selected for load balancing between inner and outer cells.
LOFD-001066
Intra-eNodeB UL CoMP
LOFD-070222
Intra-eNodeB UL CoMP Phase II
These features can improve uplink performance against interference between inner and outer cells.
LOFD-070223
UL CoMP Based on Coordinated eNodeB
LOFD-081218
Enhanced Extended QCI
UEs running push to talk (PTT) services are not selected for load balancing between inner and outer cells.
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eRAN 3D Beamforming Feature Parameter Description
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Feature ID/ Function Switch
Feature/Function Name
Description
LAOFD-001001
LTE-A Introduction
Among carrier aggregation (CA) UEs, only those who treat the local cell as their primary serving cell (PCell) are selected for load balancing between inner and outer cells. The selection occurs only when the following condition is fulfilled: PRB usage of the serving cell – PRB usage of a neighboring cell > CellVMS.VmsPrbDiffTh + 15%.
LAOFD-120201
DL CoMP
The cell power setting must be reduced by half if inner and outer cells work for downlink coordinated multipoint transmission (DL CoMP). This affects network performance.
LEOFD-120303
eNodeB ing MTC
MLOFD-121280
eMTC Introduction
ENodeBAlgoSwitch .EutranVoip Switch
VoLTE-related features and functions
UEs running machine type communication (MTC), enhanced MTC (eMTC), or voice over Long Term Evolution (VoLTE) services are not selected for load balancing between inner and outer cells.
3.3 Requirements 3.3.1 License Requirements Operators must purchase the license listed in the following table.
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Feature ID
Feature Name
Model
License Control Item
NE
Sales Unit
LEOFD-1 21204
3D Beamform ing
LLT13DB01
3D Beamforming(FD D)
eNodeB
Per Cell
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eRAN 3D Beamforming Feature Parameter Description
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3.3.2 Software Requirements Prerequisite Features Feature ID
Feature Name
Description
LOFD-001003
DL 4x2 MIMO
None
Mutually Exclusive Features
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Feature ID/ Function Switch
Feature/Function Name
Description
LOFD-001039
RF Channel Intelligent Shutdown
LOFD-001025
Adaptive Power Consumption
AAUs that 3D Beamforming do not these features or functions.
LOFD-001040
Low Power Consumption Mode
LOFD-003029
SFN
LOFD-081223
Extended Cell Access Radius Beyond 100km
MRFD-090202
GSM and LTE FDD Dynamic Spectrum Sharing(LTE FDD)
CellAlgoSwitch.Cel lDlCoverEnhanceSwitch
Downlink cell coverage enhancement in LBFD-070106 PDSCH Efficiency Improvement
EDlMaxTXPwrSwi tch option of the CellAlgoSwitch.DlP cAlgoSwitch parameter
Increase in the maximum cell transmit power
CellAlgoSwitch.Pw rDeratSwitch
Power derating
SINGLE_CA_PW R_SHARE_SW_F OR_4T option of the PDSCHCfg.TxChn PowerCfgSw parameter
Single carrier power sharing for 4T
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Feature ID/ Function Switch
Feature/Function Name
Dl256QamAccessor ySwitch option of the CellAlgoSwitch.Dl2 56QamAlgoSwitch parameter
DL 256QAM accessory algorithm in the LEOFD-110301 DL 256QAM feature
LOFD-001031
Extended
LOFD-001009
Extended Cell Access Radius
LOFD-001007
High Speed Mobility
LOFD-001008
Ultra High Speed Mobility
Description
These features do not work when AAUs are directly connected to RRUs.
3.3.3 Hardware Requirements eNodeB Model eNodeB Model
Feature
5900 series eNodeB
No
3900 series eNodeB
Yes
DBS3900 LampSite eNodeBs
No
BTS3912E
No
BTS3911E
No
BTS3203E
No
BTS3202E
No
Board The baseband processing unit must be UBBPe4 or higher-capability boards.
RF Module AAU3970s or AAU5972s must be used. Typically, each eNodeB requires three AAUs, each of which will serve two cells (one inner and one outer) for SSB. Each eNodeB will serve a total of six cells. Among AAUs, AAU3970s include both radio and antenna units. Power supplies must be connected to the AAUs, and the AAUs must be connected to the eNodeB baseband units Issue 02 (2017-04-26)
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eRAN 3D Beamforming Feature Parameter Description
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using common public radio interface (RI) optical cables. For details, see AAU3970 Installation Guide. The same is true for AAU5972s in the 1.8 GHz band. AAU5972s in other bands include only antenna units and therefore must be connected to external radio units. These AAUs supply power to the radio units. For details about how to install AAU5972s, see AAU5972 Installation Guide.
3.3.4 Other Requirements For each eNodeB, three cells will change to six cells on two layers, with each cell covering a 120-degree arc, as illustrated in Figure 3-2. Figure 3-2 Network change
To adapt to this change, the following network configurations must be re-planned: l
Neighboring cells The increase in the number of cells results in more neighbor relationships. The total number of neighbor relationships for each cell may reach the maximum, requiring adjustments to the existing neighbor relationships.
l
Physical random access channel (PRACH) root sequence indexes and physical cell identifiers (PCIs) The increase in the number of cells causes PRACH root sequence indexes and PCIs to be reused a larger number of times with less distance between cells involved in the reuse. As a result, the probabilities of PRACH root sequence index conflicts and PCI conflicts rise, calling for optimization of the reuse.
l
Angles between beams It is recommended that the angle between the downtilts of the inner- and outer-cell beams be planned based on the default band-specific beamwidth, for example, 7 degrees for 1.8 GHz and 6 degrees for 2.6 GHz. To enlarge the inner-cell coverage area, reduce the downtilt angle of the inner-cell beam so that the angle between the beams decreases.
The re-planning of these configurations should also consider the reference signal (RS) power per port before and after SSB is enabled: l
If the RS power remains stable, SSB has little impact on network planning because the downtilt angle of each outer cell will be the same as that of each original cell by default. Network planning will focus on PCIs, neighboring cells, and PRACH root sequence indexes.
l
If the RS power decreases, network planning and optimization should consider downtilt angles, angles between beams, RS power, and the settings of PA and PB.
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3.4.1 Activation and Optimization Parameters Table 3-1 describes the parameters involved in feature activation. Table 3-2 describes the parameters used for function optimization. This section does not describe the parameters related to cell establishment. Table 3-1 Parameters involved in feature activation Parameter Name
Parameter ID
Setting Notes
Antenna Number
SECTOR.ANTNUM
Set this parameter to 0.
Antenna Config Mode
SECTOREQM.ANTCFGMODE
Set this parameter to BEAM.
RRU Cabinet No.
SECTOREQM.RRUCN
Set this parameter when ANTCFGMODE is set to BEAM.
RRU Subrack No.
SECTOREQM.RRUSRN
Set this parameter when ANTCFGMODE is set to BEAM.
RRU Slot No.
SECTOREQM.RRUSN
Set this parameter when ANTCFGMODE is set to BEAM.
Beam Shape
SECTOREQM.BEAMSHAPE
Set this parameter to SEC_120DEG.
Beam Azimuth Offset
SECTOREQM.BEAMAZIMUTHO FFSET
Set this parameter to None.
Beam Layer Split
SECTOREQM.BEAMLAYERSPLI T
Set this parameter to INNER_LAYER and OUTER_LAYER for two cells served by each AAU.
Antenna Number
SECTOREQM.ANTNUM
Set this parameter to 0.
Table 3-2 Parameters used for function optimization
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Parameter Name
Parameter ID
Setting Notes
Vertical Multiple Sectors Algorithm Switch
CellAlgoSwitch.VmsSwitch
If inner and outer cell loads are imbalanced, you are advised to select the PrbBalanceSw option of this parameter to increase downlink cell capacity.
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eRAN 3D Beamforming Feature Parameter Description
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Parameter Name
Parameter ID
Setting Notes
VMS A3 Offset
CellVMS.VmsA3Offset
Set this parameter based on site conditions.
Max UE Number for Handover Out
CellVMS.VmsHoUeNumTh
Set this parameter based on site conditions.
Load Difference Threshold
CellVMS.VmsPrbDiffTh
Set this parameter based on site conditions.
Load Balancing Threshold
CellVMS.VmsPrbLoadTh
Set this parameter based on site conditions.
MML Command Example for Feature Activation //Removing original cell configurations RMV EUCELLSECTOREQM: LocalCellId=0, SectorEqmId=0; RMV CELL: LocalCellId=0; RMV SECTOREQM: SECTOREQMID=0; RMV SECTOR: SECTORID=0; //Adding back the following information as RMV CELL has been executed ADD RRUCHAIN: RCN=10, TT=CHAIN, BM=COLD, AT=LOCALPORT, HSRN=0, HSN=2, HPN=0; //Adding an AAU ADD RRU: CN=0, SRN=60, SN=0, TP=TRUNK, RCN=0, PS=0, RT=AIRU, RS=LO, RXNUM=8, TXNUM=8, MNTMODE=NORMAL, RFDWROFFALMDETECTSW=OFF; //Adding sectors ADD SECTOR: SECTORID=0, ANTNUM=0, CREATESECTOREQM=FALSE; ADD SECTOR: SECTORID=1, ANTNUM=0, CREATESECTOREQM=FALSE; //Adding sector equipment //For the inner cell ADD SECTOREQM: SECTOREQMID=0, SECTORID=0, ANTCFGMODE=BEAM, RRUSN=0, BEAMSHAPE=SEC_120DEG, BEAMLAYERSPLIT=INNER_LAYER, //For the outer cell ADD SECTOREQM: SECTOREQMID=1, SECTORID=1, ANTCFGMODE=BEAM, RRUSN=0, BEAMSHAPE=SEC_120DEG, BEAMLAYERSPLIT=OUTER_LAYER,
RRUCN=0, RRUSRN=60, BEAMAZIMUTHOFFSET=None; RRUCN=0, RRUSRN=60, BEAMAZIMUTHOFFSET=None;
//Adding the cells ADD CELL: LocalCellId=0, CellName="cell0", FreqBand=7, UlEarfcnCfgInd=NOT_CFG, DlEarfcn=2850, UlBandWidth=CELL_BW_N25, DlBandWidth=CELL_BW_N25, CellId=60, PhyCellId=60, FddTddInd=CELL_FDD, EuCellStandbyMode=ACTIVE, RootSequenceIdx=0, CustomizedBandWidthCfgInd=NOT_CFG, EmergencyAreaIdCfgInd=NOT_CFG, UePowerMaxCfgInd=NOT_CFG, MultiRruCellFlag=BOOLEAN_FALSE, TxRxMode=4T4R; ADD CELL: LocalCellId=1, CellName="cell1", FreqBand=7, UlEarfcnCfgInd=NOT_CFG, DlEarfcn=2850, UlBandWidth=CELL_BW_N25, DlBandWidth=CELL_BW_N25, CellId=60, PhyCellId=60, FddTddInd=CELL_FDD, EuCellStandbyMode=ACTIVE, RootSequenceIdx=0, CustomizedBandWidthCfgInd=NOT_CFG, EmergencyAreaIdCfgInd=NOT_CFG, UePowerMaxCfgInd=NOT_CFG, MultiRruCellFlag=BOOLEAN_FALSE, TxRxMode=4T4R; //Mapping sector equipment to the cells ADD EUCELLSECTOREQM: LocalCellId=0, SectorEqmId=0; ADD EUCELLSECTOREQM: LocalCellId=1, SectorEqmId=1; /*Adding RET antennas for the cells (Pay attention to the information provided in the note at the end of this section.)*/ ADD RET: DEVICENO=0, CTRLCN=0, CTRLSRN=60, CTRLSN=0, RETTYPE=SINGLE_RET, SCENARIO=DAISY_CHAIN, VENDORCODE="HW", SERIALNO="M2194G30002A01Ay1"; ADD RET: DEVICENO=1, CTRLCN=0, CTRLSRN=60, CTRLSN=0, RETTYPE=SINGLE_RET, SCENARIO=DAISY_CHAIN, VENDORCODE="HW", SERIALNO="M2194G30001B01By1";
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/*Setting downtilt angles for the RET antennas (Typically, downtilt angle for the inner cell = downtilt angle for the outer cell + 6 degrees)*/ MOD RETSUBUNIT:DEVICENO=0,SUBUNITNO=1,TILT=12; MOD RETSUBUNIT:DEVICENO=1,SUBUNITNO=1,TILT=6; //Setting MIMO transmission mode for the cells MOD CELLMIMOPARACFG:LOCALCELLID=0,MIMOADAPTIVESWITCH=CL_ADAPTIVE; MOD CELLMIMOPARACFG:LOCALCELLID=1,MIMOADAPTIVESWITCH=CL_ADAPTIVE; //Adding back the following information as RMV CELL has been executed ADD CELLOP: LocalCellId=0, TrackingAreaId=0, MMECfgNum=CELL_MME_CFG_NUM_0; ADD CELLOP: LocalCellId=1, TrackingAreaId=0, MMECfgNum=CELL_MME_CFG_NUM_0; /*Setting the channel power MOD PDSCHCFG: MOD PDSCHCFG:
single-channel power based on site conditions to ensure that singledoes not exceed 18.5 W*/ LocalCellId=0, ReferenceSignalPwr=139; LocalCellId=1, ReferenceSignalPwr=139;
//Activating the cells ACT CELL:LOCALCELLID=0; ACT CELL:LOCALCELLID=1; NOTE
The serial number of each RET antenna can be queried by running the SCN ALD command. If the sixth digit from right to left of a serial number is A (for example, M2194G30002A01Ay1), the RET antenna must be configured to serve the inner cell. If the digit is B (for example, M2194G30001B01By1), the RET antenna must be configured to serve the outer cell.
MML Command Example for Parameter Optimization Unbalanced UE distribution or cell-level PRB usage between the inner and outer cells may limit the gains produced by this feature. If this is the case, use either of the following methods to increase feature gains: l
Adjust the downtilt angles for the cells by setting the RETSUBUNIT.TILT parameter. /*Setting downtilt angles for the RET antennas (Typically, downtilt angle for the inner cell = downtilt angle for the outer cell + 6 degrees)*/ MOD RETSUBUNIT:DEVICENO=0,SUBUNITNO=1,TILT=12; MOD RETSUBUNIT:DEVICENO=1,SUBUNITNO=1,TILT=6;
l
Enable load balancing between inner and outer cells. //Turning on the load balancing switch MOD CELLALGOSWITCH:LOCALCELLID=0,VMSSWITCH=PRBBALANCESW-1; MOD CELLALGOSWITCH:LOCALCELLID=1,VMSSWITCH=PRBBALANCESW-1; //Setting load balancing parameters MOD CELLVMS:LOCALCELLID=0,VMSHOUENUMTH=1,VMSPRBDIFFTH=40,VMSPRBLOADTH=80,VMSA3OFFS ET=3; MOD CELLVMS:LOCALCELLID=1,VMSHOUENUMTH=1,VMSPRBDIFFTH=40,VMSPRBLOADTH=80,VMSA3OFFS ET=3;
3.4.2 Observation and Monitoring Activation Observation l
Run the DSP CELL command. If the inner and outer cells are available, SSB has taken effect.
l
Observe the following counters:
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–
L.HHO.IntraFreq.Load.ExecSuccOut
–
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If either of them produces a non-zero value, load balancing between inner and outer cells has taken effect.
Network Monitoring l
Cell traffic volume increases. Calculate the percent increase in the traffic volume when PRB usage remains unchanged. Traffic volume in the original cell = L.Thrp.bits.DL Traffic volume after SSB is used = Sum of the L.Thrp.bits.DL counter values for the inner and outer cells
l
Average UE throughput increases. Calculate the percent increase in the average UE throughput when cell traffic volume remains unchanged. Average UE throughput in the original cell = (L.Thrp.bits.DL – L.Thrp.bits.DL.LastTTI)/L.Thrp.Time.DL.RmvLastTTI Average UE throughput after SSB is used = (Sum of L.Thrp.bits.DL of the inner and outer cells – Sum of L.Thrp.bits.DL.LastTTI of the inner and outer cells)/Sum of L.Thrp.Time.DL.RmvLastTTI of the inner and outer cells
l
Cell-edge UE throughput increases. Calculate the percent increase in the cell-edge UE throughput when cell traffic volume remains unchanged. Cell-edge UE throughput in the original cell = (L.Thrp.bits.DL.BorderUE – L.Thrp.bits.DL.LastTTI.BorderUE)/L.Thrp.Time.DL.RmvLastTTI.BorderUE Cell-edge UE throughput after SSB is used = (Sum of L.Thrp.bits.DL.BorderUE of the inner and outer cells – Sum of L.Thrp.bits.DL.LastTTI.BorderUE of the inner and outer cells)/Sum of L.Thrp.Time.DL.RmvLastTTI.BorderUE of the inner and outer cells
l
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Other aspects –
The average downlink PRB usage of a single cell may decrease, while the eNodeB traffic volume increases.
–
The percentage of times rank 1 is reported will increase, resulting in a lower probability that any single UE will achieve the peak data rate.
–
The increase in the number of cells results in more cell edge areas and therefore more handovers. The handover success rate may decrease, and the number of RRC connection reestablishments and the service drop rate may rise.
Counter ID
Counter Name
Counter Description
1526745677
L.HHO.IntraFreq.Load.E xecSuccOut
Number of successful loadbased intra-frequency handover executions
1526745676
L.HHO.IntraFreq.Load.E xecAttOut
Number of load-based intrafrequency handover execution attempts
1526728261
L.Thrp.bits.DL
Total downlink traffic volume for PD SDUs in a cell
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3 Technical Description
Counter ID
Counter Name
Counter Description
1526729005
L.Thrp.bits.DL.LastTTI
Downlink traffic volume sent in the last TTI for PD SDUs before the buffer is empty
1526729015
L.Thrp.Time.DL.RmvLast TTI
Data transmit duration except the last TTI before the downlink buffer is empty
1526728997
L.Thrp.Time.Cell.DL.High Precision
Total duration of downlink data transmission in a cell (with the precision of 1 ms)
1526737755
L.Thrp.bits.DL.BorderUE
Downlink PD-layer traffic volume sent for CEUs in a cell
1526737759
L.Thrp.Time.DL.RmvLast TTI.BorderUE
Data transmission duration for CEUs except the last TTI before the downlink buffer is empty
1526727378
L.Traffic..Avg
Average number of s in a cell
1526730141
L.ChMeas.RI.Rank1
Number of times rank 1 is reported
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
4
Parameters
Table 4-1 Parameters MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
RETSU BUNIT
TILT
MOD RETSU BUNIT
MRFD210601
Connect ion with TMA (Tower Mounte d Amplifi er)
Meaning: Indicates the antenna tilt of the RET subunit. If this parameter is set to 32767, it is invalid and the actual tilt is not changed.
MOD RETTIL T LST RETSU BUNIT
MRFD210602 WRFD060003 LBFD-0 01024 / TDLBF D-00102 4/ MLBFD -120004 21
GUI Value Range: -300~300,32767 Unit: 0.1degree Actual Value Range: -30~30,3276.7, step:0.1 Default Value: 32767
Remote Electrica l Tilt Same Band Antenna Sharing Unit (900Mh z) Remote Electrica l Tilt Control
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellAlg oSwitch
VmsSwi tch
MOD CELLA LGOSW ITCH
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning:
LST CELLA LGOSW ITCH
Indicates whether to enable algorithms related to vertical multiple sectors (VMS). This parameter applies only to LTE FDD. PrbBalanceSw: If this option is selected, load balancing between inner and outer cells is enabled. If this option is deselected, load balancing between inner and outer cells is disabled. GUI Value Range: PrbBalanceSw(PrbBalanceSw) Unit: None Actual Value Range: PrbBalanceSw Default Value: PrbBalanceSw:Off
CellVM S
VmsHo UeNum Th
MOD CELLV MS
LEOFD111304
LST CELLV MS
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the maximum number of UEs that can be transferred within 10s. This parameter is used to prevent too many UEs from being transferred at a time to neighboring cells to cause significant impact on neighboring cells. This parameter applies only to LTE FDD. GUI Value Range: 1~10 Unit: None Actual Value Range: 1~10 Default Value: 1
CellVM S
VmsPrb LoadTh
MOD CELLV MS LST CELLV MS
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the PRB usage threshold for triggering MLB. MLB is triggered if the PRB usage of the serving cell is higher than this parameter value. This parameter applies only to LTE FDD. GUI Value Range: 1~99 Unit: % Actual Value Range: 1~99 Default Value: 80
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellVM S
VmsPrb DiffTh
MOD CELLV MS
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the threshold of PRB usage difference between the serving cell and a neighboring cell. When the result of the PRB usage of the serving cell minus that of a neighboring cell in a cluster is greater than the parameter value, this neighboring cell can be a target cell for MLB. This parameter applies only to LTE FDD.
LST CELLV MS
GUI Value Range: 1~99 Unit: % Actual Value Range: 1~99 Default Value: 40 IntraFre qHoGro up
IntraFre qHoA3 Offset
ADD INTRA FREQH OGROU P MOD INTRA FREQH OGROU P
LBFD-0 0201801 / TDLBF D-00201 801
Coverag e Based Intrafrequenc y Handov er
GUI Value Range: -30~30 Unit: 0.5dB Actual Value Range: -15~15
LST INTRA FREQH OGROU P CellVM S
VmsA3 Offset
MOD CELLV MS LST CELLV MS
Meaning: Indicates the offset for event A3. If the parameter is set to a large value, an intra-frequency handover is performed only when the signal quality of the neighboring cell is significantly better than that of the serving cell and other triggering conditions are met. For details, see 3GPP TS 36.331. This parameter applies only to LTE FDD and LTE TDD.
Default Value: 2
LEOFD111304
Vertical Multiple Sectors of 4T4R
Meaning: Indicates the intra-frequency handover offset between the inner and outer cells. This parameter applies only to LTE FDD. GUI Value Range: 0~20 Unit: dB Actual Value Range: 0~20 Default Value: 3
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
ENodeB AlgoSwi tch
EutranV oipSupp ortSwitc h
MOD ENODE BALGO SWITC H
None
None
Meaning: Indicates whether the VoIP services are enabled in the E-UTRAN cell. This parameter is used for determining whether the establishment, handover in, ission, and reestablishment of VoIP services is allowed. This parameter applies only to LTE FDD and LTE TDD.
LST ENODE BALGO SWITC H
GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)
CellAlg oSwitch
CellDlC overEnh anceSwi tch
MOD CELLA LGOSW ITCH LST CELLA LGOSW ITCH
LBFD-0 70106
PDSCH Efficien cy Improve ment
Meaning: DlCellCoverEnhanceAlgoSw: Indicates whether to enable cell coverage enhancement. Enabling this function can increase the throughput of cell edge UEs (CEUs) and improve cell coverage. AdptCellEdgePwrAllocSw: Indicates whether to enable adaptive power matching. Enabling this function in a lightly loaded wide coverage cell helps improve the performance of CEUs. This function is enabled only when this option is selected. This option applies only to LTE FDD. GUI Value Range: DlCellCoverEnhanceAlgoSw(DlCellCoverEnhanceAlgoSw), AdptCellEdgePwrAllocSw(AdptCellEdgePwrAllocSw) Unit: None Actual Value Range: DlCellCoverEnhanceAlgoSw, AdptCellEdgePwrAllocSw Default Value: DlCellCoverEnhanceAlgoSw:off, AdptCellEdgePwrAllocSw:off
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellAlg oSwitch
DlPcAlg oSwitch
MOD CELLA LGOSW ITCH
LBFD-0 02003 / TDLBF D-00200 3
Physical Channel Manage ment
Meaning:
Broadca st of system informat ion
PdschSpsPcSwitch: If this option is deselected, power is allocated evenly during semi-persistent scheduling on the PDSCH. If this option is selected, power control is applied during semi-persistent scheduling on the PDSCH, ensuring quality (indicated by IBLER) of VoIP services in the QPSK modulation scheme. This option applies only to LTE FDD and LTE TDD.
LST CELLA LGOSW ITCH
LBFD-0 02009 / TDLBF D-00200 9 LBFD-0 02016 / TDLBF D-00201 6 TDLOF D-00104 9 TDLOF D-00106 1 LOFD-0 01051
Dynami c Downlin k Power Allocati on Single Streami ng Beamfor ming Dual Streami ng Beamfor ming Compac t Bandwi dth
Indicates whether to enable power control for the PDSCH, PDCCH, and PHICH.
PhichInnerLoopPcSwitch: Indicates whether to enable PHICH inner-loop power control. If this option is deselected, only the initial transmit power for the PHICH is set. If this option is selected, the eNodeB controls the physical channel transmit power for the convergence of the receive SINR to the target SINR. This option applies only to LTE FDD and LTE TDD. PdcchPcSwitch: Indicates whether to enable PDCCH power control. If this option is deselected, power is allocated evenly on the PDCCH. If this option is selected, the PDCCH power is adjusted dynamically. This option applies only to LTE FDD and LTE TDD. EDlMaxTXPwrSwitch: If this option is deselected, the maximum transmit power of the cell is determined by the RS power and the scaling factor indexes Pa and Pb. If this option is selected, the maximum transmit power of the cell can be increased to improve the cell RB usage. This option has no impact on 10 MHz, 15 MHz and 20 MHz LTE TDD cells. This option applies only to LTE FDD. BFModePwrSwitch: Indicates whether to enable power optimization for beamforming UEs. If this option is deselected, the original power allocation scheme is adopted for beamforming UEs. If this option is selected, the eNodeB uses the configured power headroom to increase the power for beamforming UEs. This option applies only to LTE TDD. SigPowerIncreaseSwitch: Indicates whether to enable signaling power improvement. If this option is selected, the PDSCH transmit power increases when scheduling is performed for downlink retransmission of signaling during network entry. This option applies only to LTE TDD.
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eRAN 3D Beamforming Feature Parameter Description
MO
Parame ter ID
MML Comma nd
Feature ID
4 Parameters
Feature Name
Description
BFModeAdptPwrSwitch: Indicates whether to enable power adaptation for beamforming UEs. If this option is selected, the eNodeB adaptively increases the power of beamforming UEs in the cell based on the available power of the RRU and loads at neighboring cell edges. In this way, the average cell throughput increases. This option applies only to LTE TDD. BfEnhChnPwrFormSwitch: Indicates whether to enable enhanced channel power forming for beamforming. If this option is selected, the eNodeB determines the TX power differences between antennas based on the Eigen beamforming weights of the antennas, determines the channel power headroom based on the percentage of the number of idle RBs available in the current TTI in downlink scheduling, and flexibly allocates TX power to each channel of the RRU. This option applies only to LTE TDD. DlNonStandardBwMaxPwrSwitch: If this option is deselected, the eNodeB determines the maximum transmit power of a cell of a non-standard bandwidth based on the number of available downlink RBs for a standard bandwidth. If this option is selected, the eNodeB determines the maximum power of a cell of a non-standard bandwidth based on the number of available downlink RBs for a customized bandwidth. Changing the setting of this option will change the calculated total power and require cell reactivation. This option applies only to LTE FDD. GUI Value Range: PdschSpsPcSwitch, PhichInnerLoopPcSwitch, PdcchPcSwitch, EDlMaxTXPwrSwitch, BFModePwrSwitch, SigPowerIncreaseSwitch, BFModeAdptPwrSwitch, BfEnhChnPwrFormSwitch(BfEnhChnPwrFormSwitch), DlNonStandardBwMaxPwrSwitch(DlNonStandardBwMaxPwrSwitch) Unit: None Actual Value Range: PdschSpsPcSwitch, PhichInnerLoopPcSwitch, PdcchPcSwitch, EDlMaxTXPwrSwitch, BFModePwrSwitch, SigPowerIncreaseSwitch, BFModeAdptPwrSwitch, BfEnhChnPwrFormSwitch, DlNonStandardBwMaxPwrSwitch Default Value: PdschSpsPcSwitch:Off, PhichInnerLoopPcSwitch:Off, PdcchPcSwitch:On,
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eRAN 3D Beamforming Feature Parameter Description
MO
Parame ter ID
MML Comma nd
Feature ID
4 Parameters
Feature Name
Description
EDlMaxTXPwrSwitch:Off, BFModePwrSwitch:Off, SigPowerIncreaseSwitch:Off, BFModeAdptPwrSwitch:Off, BfEnhChnPwrFormSwitch:Off, DlNonStandardBwMaxPwrSwitch:Off CellAlg oSwitch
PwrDera tSwitch
MOD CELLA LGOSW ITCH
None
None
LST CELLA LGOSW ITCH
Meaning: Indicates whether to apply the power decrease mechanism on reference signal (RS) power and physical synchronization channel (PSCH) power. If this parameter is set OFF, the physical downlink shared channel (PDSCH) transmit power is lowered, the RS power and PSCH power are not lowered. If this parameter is set to ON, all of the PDSCH power, RS power, and PSCH power are lowered. This parameter applies only to LTE FDD and LTE TDD. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)
PDSCH Cfg
TxChnP owerCfg Sw
MOD PDSCH CFG LST PDSCH CFG
LOFD-0 01003
DL 4x2 MIMO
LOFD-0 01060
DL 4x4 MIMO
LEOFD111305
Virtual 4T4R
Meaning: Indicates whether to enable algorithms related to transmit channel power configurations. SINGLE_CA_PWR_SHARE_SW_FOR_4T: Indicates whether to enable single carrier power sharing for 4T. This option applies only to LTE FDD. GUI Value Range: SINGLE_CA_PWR_SHARE_SW_FOR_4T(SINGLE _CA_PWR_SHARE_SW_FOR_4T) Unit: None Actual Value Range: SINGLE_CA_PWR_SHARE_SW_FOR_4T Default Value: SINGLE_CA_PWR_SHARE_SW_FOR_4T:Off
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22
eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
CellAlg oSwitch
Dl256Q amAlgo Switch
MOD CELLA LGOSW ITCH
LBFD-0 02025 / TDLBF D-00202 5
Basic Scheduli ng
Meaning:
LST CELLA LGOSW ITCH
LBFD-0 0101502 / TDLBF D-00101 502
Dynami c Scheduli ng DL 256QA M
LAOFD -090201 / TDLAO FD-090 201 / LEOFD110301
Indicates whether to enable the algorithms related to downlink (DL) 256 quadrature amplitude modulation (256QAM). Dl256QamSwitch: Indicates whether to enable DL 256QAM. If this option is selected, DL 256QAM is enabled, and the highest-order DL modulation scheme is 256QAM for UEs that DL 256QAM. If this option is deselected, DL 256QAM is disabled and the highest-order DL modulation scheme is 64QAM. The feature takes effect only when a UBBP or LBBPd board is configured. Dl256QamAccessorySwitch: Indicates whether to enable Downlink 256QAM Accessory. Downlink 256QAM Accessory is enabled only if this option is selected. When this option is selected, error vector magnitude (EVM) is optimized for 256QAM in the TTIs in which DL 256QAM takes effect. The feature takes effect only when a UBBP board is configured. GUI Value Range: Dl256QamSwitch(Dl256QamSwitch), Dl256QamAccessorySwitch(Dl256QamAccessorySwi tch) Unit: None Actual Value Range: Dl256QamSwitch, Dl256QamAccessorySwitch Default Value: Dl256QamSwitch:Off, Dl256QamAccessorySwitch:Off
SECTO REQM
ANTCF GMOD E
ADD SECTO REQM MOD SECTO REQM LST SECTO REQM
None
None
Meaning: Indicates the antenna configuration mode of sector equipment. If this parameter is set to ANTENNAPORT, the antenna port list must be configured. If this parameter is set to BEAM, RRU and beamforming parameters must be configured. This parameter can be set to BEAM only on the LTE side. GUI Value Range: ANTENNAPORT(ANTENNAPORT), BEAM(BEAM) Unit: None Actual Value Range: ANTENNAPORT, BEAM Default Value: ANTENNAPORT(ANTENNAPORT)
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23
eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
SECTO REQM
RRUCN
ADD SECTO REQM
None
None
Meaning: Indicates the cabinet number of the RRU to which a sector antenna is connected. The parameter takes effect only in LTE.
MOD SECTO REQM
GUI Value Range: 0~62 Unit: None Actual Value Range: 0~62
LST SECTO REQM SECTO REQM
RRUSR N
ADD SECTO REQM
Default Value: None
None
None
MOD SECTO REQM
GUI Value Range: 4~5,60~254 Unit: None Actual Value Range: 4~5,60~254
LST SECTO REQM SECTO REQM
RRUSN
ADD SECTO REQM
Default Value: None
None
None
MOD SECTO REQM
BEAMS HAPE
ADD SECTO REQM MOD SECTO REQM LST SECTO REQM
Meaning: Indicates the slot number of the RRU to which a sector antenna is connected. The parameter takes effect only in LTE. GUI Value Range: 0~8 Unit: None Actual Value Range: 0~8
LST SECTO REQM SECTO REQM
Meaning: Indicates the subrack number of the RRU to which a sector antenna is connected. The parameter takes effect only in LTE.
Default Value: None
None
None
Meaning: Indicates the beam coverage shape of sector equipment, specified by the expanding angle of a sector. The parameter takes effect only in LTE. GUI Value Range: SEC_120DEG(SEC_120DEG), SEC_60DEG(SEC_60DEG), SEC_90DEG(SEC_90DEG), SEC_180DEG(SEC_180DEG) Unit: None Actual Value Range: SEC_120DEG, SEC_60DEG, SEC_90DEG, SEC_180DEG Default Value: None
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eRAN 3D Beamforming Feature Parameter Description
4 Parameters
MO
Parame ter ID
MML Comma nd
Feature ID
Feature Name
Description
SECTO REQM
BEAM AZIMU THOFF SET
ADD SECTO REQM
None
None
Meaning: Indicates the azimuth offset of the main lobe direction of horizontal beam coverage and the RF module direction. If this parameter is set to None, the main lobe of beams and RF module are in the same direction. If this parameter is set to LEFT_HALF, the azimuth deflects 1/2 sector angle counterclockwise. If this parameter is set to RIGHT_HALF, the azimuth deflects 1/2 sector angle clockwise. For example, the horizontal azimuth deflects 60° counterclockwise with BEAMSHAPE set to SEC_120DEG and BEAMAZIMUTHOFFSET set to LEFT_HALF. The parameter takes effect only in LTE.
MOD SECTO REQM LST SECTO REQM
GUI Value Range: None(None), LEFT_HALF(LEFT_HALF), RIGHT_HALF(RIGHT_HALF) Unit: None Actual Value Range: None, LEFT_HALF, RIGHT_HALF Default Value: None SECTO REQM
BEAML AYERS PLIT
ADD SECTO REQM MOD SECTO REQM LST SECTO REQM
None
None
Meaning: Indicates the vertical beam split. If this parameter is set to None, the vertical coverage area is not split. If this parameter is set to INNER_LAYER, the inner sector is covered after a beam layer split. If this parameter is set to OUTER_LAYER, the outer sector is covered after a beam layer split. The parameter takes effect only in LTE. GUI Value Range: None(None), INNER_LAYER(INNER_LAYER), OUTER_LAYER(OUTER_LAYER) Unit: None Actual Value Range: None, INNER_LAYER, OUTER_LAYER Default Value: None
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eRAN 3D Beamforming Feature Parameter Description
5 Counters
5
Counters
Table 5-1 Counters Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
1526726740
L.ChMeas.PRB.DL .Used.Avg
Average number of used PDSCH PRBs
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None
Adaptive SFN/ SDMA
LTE: LBFD-002025
Virtual 4T4R
TDLBFD-002025 LOFD-070205 LEOFD-111305 1526727378
L.Traffic..Avg
Average number of s in a cell
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002007
RRC Connection Management RRC Connection Management
TDLBFD-002007 1526728261
L.Thrp.bits.DL
Total downlink traffic volume for PD SDUs in a cell
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025
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eRAN 3D Beamforming Feature Parameter Description
5 Counters
Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
1526728433
L.ChMeas.PRB.DL .Avail
Number of available downlink PRBs
Multi-mode: MRFD-090202 GSM: None
GSM and LTE FDD Dynamic Spectrum Sharing(LTE FDD)
UMTS: None
LTE-A Introduction
LTE: LAOFD-001001
Carrier Aggregation for Downlink 2CC in 40MHz
LAOFD-001002 LOFD-070205 TDLOFD-001075 LEOFD-111305 1526728997
L.Thrp.Time.Cell.D L.HighPrecision
Total duration of downlink data transmission in a cell (with the precision of 1 ms)
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Adaptive SFN/ SDMA SFN Virtual 4T4R Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025 1526729005
L.Thrp.bits.DL.Last TTI
Downlink traffic volume sent in the last TTI for PD SDUs before the buffer is empty
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025 1526729015
L.Thrp.Time.DL.R mvLastTTI
Data transmit duration except the last TTI before the downlink buffer is empty
Multi-mode: None GSM: None UMTS: None LTE: LBFD-002008 TDLBFD-002008
Radio Bearer Management Radio Bearer Management Basic Scheduling Basic Scheduling
LBFD-002025 TDLBFD-002025
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eRAN 3D Beamforming Feature Parameter Description
5 Counters
Counter ID
Counter Name
Counter Description
Feature ID
Feature Name
1526730141
L.ChMeas.RI.Rank 1
Number of times rank 1 is reported
Multi-mode: None
Basic Scheduling
GSM: None
DL 2x2 MIMO
UMTS: None
DL 4x2 MIMO
LTE: LBFD-002025
Basic Scheduling DL 2x2 MIMO
LOFD-001001 LOFD-001003 TDLBFD-002025 TDLOFD-001001 1526737755
L.Thrp.bits.DL.Bor derUE
Downlink PDlayer traffic volume sent for CEUs in a cell
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None LTE: LBFD-002025 TDLBFD-002025
1526737758
L.Thrp.bits.DL.Last TTI.BorderUE
Downlink PDlayer traffic volume sent in the last TTI for CEUs before the buffer is empty in a cell
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None LTE: LBFD-002025 TDLBFD-002025
1526737759
L.Thrp.Time.DL.R mvLastTTI.Border UE
Data transmission duration for CEUs except the last TTI before the downlink buffer is empty
Multi-mode: None
Basic Scheduling
GSM: None
Basic Scheduling
UMTS: None LTE: LBFD-002025 TDLBFD-002025
1526745676
L.HHO.IntraFreq.L oad.ExecAttOut
Number of loadbased intrafrequency handover execution attempts
None
None
1526745677
L.HHO.IntraFreq.L oad.ExecSuccOut
Number of successful loadbased intrafrequency handover executions
None
None
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eRAN 3D Beamforming Feature Parameter Description
6 Glossary
6
Glossary
None
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eRAN 3D Beamforming Feature Parameter Description
7 Reference Documents
7
Reference Documents
ALD Management Feature Parameter Description
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