LTE Important Parameters and Switches

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PDSCHPAADJSWITCH

MO CellDlPcPdschPa

Parameter ID PdschPaAdjSwitch

Parameter Name PDSCHPAADJSWITCH NE eNodeB

MML Command LST CELLDLPCPDSCHPA

MOD CELLDLPCPDSCHPA

Meaning Indicates the switch for adjusting the PA through power control on the PDSCH. If this parameter is set to ON, the PA is adjusted dynamically when the channel quality is extremely good or bad.

IsKey NO

Mandatory NO

Dynamic Attribute No

Feature ID LBFD-002016

Feature Name Dynamic Downlink Power Allocation

Value Type Enumeration values

GUI Value Range OFF(Off), ON(On) Enumeration Number/Bit OFF~0, ON~1 Unit None Actual Value Range OFF, ON

Default Value OFF(Off)

Recommended Value OFF(Off) Impact CellDlPcPdschPa Parameter Relationship None

Access Read & Write

Service Interrupted After

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Modification

Interruption Scope Not involved Interruption Duration (min) Not involved Caution None Validation of Modification

The parameter modification has no impact on the equipment.

Impact on Radio Network Performance

If this switch is on, the PA is adjusted. If this switch is off, the PA is not adjusted. Introduced in Version... V100R002C00 Attribute Radio Initial Value Setting Source Default/Recommended

Parent topic: CellDlPcPdschPa

MimoAdaptiveSwitch

MO MimoAdaptiveParaCfg Parameter ID MimoAdaptiveSwitch

Parameter Name MimoAdaptiveSwitch NE eNodeB

MML Command LST MIMOADAPTIVEPARACFG

MOD MIMOADAPTIVEPARACFG

Meaning Indicates the switches related to adaptive MIMO.

ModeCOLoopSwitch: is used to control whether adaptive switching between the open-loop mode and the closed-loop mode is applied to downlink transmission of an eNodeB that is equipped with multiple antennas.

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between the diversity mode and the multiplexing mode is applied to downlink transmission of an eNodeB that is equipped with multiple antennas. IsKey NO Mandatory NO Dynamic Attribute No Feature ID LBFD-002017 LOFD-001003

Feature Name DL 2x2 MIMO DL 4x2 MIMO

Value Type Bit field type

GUI Value Range ModeCOLoopSwitch(Open loop and Closed loop Switch),

ModeDivMuxSwitch(Diversity and Multiplexing Switch)

Enumeration Number/Bit ModeCOLoopSwitch~0, ModeDivMuxSwitch~1 Unit None Actual Value Range ModeCOLoopSwitch, ModeDivMuxSwitch

Default Value Open loop and Closed loop Switch:off, Diversity and Multiplexing Switch:on

Recommended Value

Open loop and Closed loop Switch:off, Diversity and Multiplexing Switch:on

Impact MimoAdaptiveParaCfg

Parameter Relationship

None

Modification

No (And no impact on the UE in idle mode)

Interruption Scope Not involved Interruption

Duration (min)

Not involved

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Validation of Modification

The setting of this parameter determines the transmission modes that are applicable to the UEs served by a multi-antenna eNodeB and hence affects the performance such as the throughput and coverage.

Introduced in Version... V100R001C01 Attribute Radio Initial Value Setting Source Engineering Design

Parent topic: MimoAdaptiveParaCfg

DELTAMCSENABLED

MO CellUlPcDedic

Parameter ID DeltaMcsEnabled

Parameter Name DELTAMCSENABLED NE eNodeB

MML Command LST CELLULPCDEDIC

MOD CELLULPCDEDIC

Meaning Indicates whether the transmit power of the UE is adjusted

according to the difference between MCSs. indication is contained in an RRC message signaled to the UE.

In the message,

this indication occupies one bit. The value 0, which means disabled, indicates that ΔTF is equal to 0 because Ks is equal to 0. The value 1, which means enabled, indicates that ΔTF is calculated on the condition that Ks is equal to 1.25.

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IsKey NO

Mandatory NO

Feature Name Uplink Power Control

GUI Value Range UU_DISABLE(Disable), UU_ENABLE(Enable) Enumeration Number/Bit UU_DISABLE~0, UU_ENABLE~1 Unit None Actual Value Range UU_DISABLE, UU_ENABLE

Default Value UU_DISABLE(Disable)

Recommended Value UU_DISABLE(Disable) Impact CellUlPcDedic Parameter Relationship None

Modification

When Ks is equal to 0, the transmit power can be adjusted

according to only closed-loop TPC commands. When Ks is equal to 1.25, the transmit power can be adjusted by means of selecting different

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MCSs during scheduling. This helps the UE to quickly adapt to changes in channel conditions and increases the cell throughput.

Introduced in Version... V100R001C01 Attribute Radio Initial Value Setting Source Default/Recommended

Parent topic: CellUlPcDedic

ROHCSwitch

MO PDCPROHCPara

Parameter ID ROHCSwitch

Parameter Name ROHCSwitch NE eNodeB

MML Command LST PDCPROHCPARA

MOD PDCPROHCPARA

Meaning Indicates whether the eNodeB supports ROHC.

This switch needs to be set to ON when the eNodeB is expected to support VoIP or video services.

IsKey NO

Mandatory NO

Feature ID LOFD-001017

Feature Name RObust Header Compression (ROHC)

GUI Value Range OFF(Off), ON(On) Enumeration

Number/Bit

OFF~0, ON~1

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Actual Value Range

OFF, ON

Recommended Value OFF(Off) Impact PDCPROHCPara Parameter Relationship None

Modification

ROHC header compression helps reduce header overhead. The reduction is especially significant for services with small data packets, such as VoIP services. Introduced in Version... V100R001C01 Attribute Radio Initial Value Setting Source Engineering Design

Parent topic: PDCPROHCPara

HighestMode

MO PDCPROHCPara

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Parameter Name HighestMode NE eNodeB

MOD PDCPROHCPARA

Meaning Indicates the highest mode of ROHC operation.

In Unidirectional Mode (U-mode), packets are sent in one direction only (that is, from the compressor to the decompressor), and a feedback channel from the decompressor to the compressor is undesirable. Therefore, the U-mode provides the lowest reliability but also the lowest feedback overhead, compared with the other two modes.

In Bi-directional Optimistic Mode (O-mode), the decompressor sends the compressor the feedback, which indicates errors or context synchronization successes. Therefore, the O-mode provides higher reliability than the U-mode but causes a lower amount of feedback information than the R-U-mode. In Bi-Directional Reliable Mode (R-mode), the reliability of context

synchronization between the compressor and the decompressor is higher than that in any other mode; however, because of frequent feedback, the R-mode causes the greatest link overhead.

IsKey NO

Mandatory NO

GUI Value Range U_MODE(Unidirectional Mode), O_MODE(Bi-directional Optimistic

Mode), R_MODE(Bi-Directional Reliable Mode)

Enumeration Number/Bit

U_MODE~1, O_MODE~2, R_MODE~3

Unit None

U_MODE, O_MODE, R_MODE

Default Value U_MODE(Unidirectional Mode)

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Impact PDCPROHCPara

None

Modification

The reliability of packet transmission and the network link overhead are affected. Introduced in Version... V100R001C01 Attribute Radio Initial Value Setting Source Engineering Design

Profiles

MO PDCPROHCPara

Parameter ID Profiles

Parameter Name Profiles NE eNodeB

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Meaning Indicates the compression profile supported by the eNodeB.

Under the ROHC framework, different header compression algorithms are applicable to different protocols. Profiles define the header compression protocols (such as RTP/UDP/IP or TCP/IP), which are under the same ROHC framework, for specific types of packet streams. Each profile has a unique identifier.

As defined by LTE specifications, the eNodeB supports the following profiles: profile 0x0001 (usage: RTP/UDP/IP; reference: RFC 3095 and RFC 4815), profile 0x0002 (usage: UDP/IP; reference: RFC 3095 and RFC 4815), profile 0x0003 (usage: ESP/IP; reference: RFC 3095 and RFC 4815), and profile 0x0004 (usage: IP; reference: RFC 3843 and RFC 4815).

IsKey NO

Mandatory NO

Value Type Bit field type

GUI Value Range Profile0x0001(Profile0x0001), Profile0x0002(Profile0x0002),

Profile0x0003(Profile0x0003), Profile0x0004(Profile0x0004)

Profile0x0001~0, Profile0x0002~1, Profile0x0003~2, Profile0x0004~3

Unit None

Profile0x0001, Profile0x0002, Profile0x0003, Profile0x0004

Default Value Profile0x0001:on, Profile0x0002:on, Profile0x0003:on, Profile0x0004:on

Profile0x0001:on, Profile0x0002:on, Profile0x0003:on, Profile0x0004:on

Impact PDCPROHCPara

None

Modification

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The support for different protocols is affected.

DefDopplerLevel

MO INNERMEASSWITCH

Parameter ID DefDopplerLevel

Parameter Name DefDopplerLevel NE eNodeB

MML Command MOD INNERMEASSWITCH

LST INNERMEASSWITCH

Meaning Indicates the default Doppler level. When the Doppler measurement switch is shut down, parameters are set based on the default Doppler level.

IsKey NO

Mandatory NO

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GUI Value Range CLASS_0(CLASS_0), CLASS_1(CLASS_1), CLASS_2(CLASS_2) Enumeration

Number/Bit

CLASS_0~0, CLASS_1~1, CLASS_2~2

Unit None

CLASS_0, CLASS_1, CLASS_2

Default Value CLASS_1(CLASS_1)

Recommended Value CLASS_1(CLASS_1) Impact INNERMEASSWITCH Parameter Relationship None

Modification

Indicates the default Doppler level when the Doppler measurement switch is shut down. The Doppler level and other associated factors affect the CQI report mode and reported parameters, and therefore affect the feedback overhead on the uplink and throughput or coverage on the downlink.

Introduced in Version... V100R001C01 Attribute Radio Initial Value Setting Source Default/Recommended

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TtiBundlingSwitch

MO GlobalProcSwitch Parameter ID TtiBundlingSwitch

Parameter Name TtiBundlingSwitch NE eNodeB

MML Command LST GLOBALPROCSWITCH

MOD GLOBALPROCSWITCH

Meaning Indicates whether TTI bundling is enabled.

IsKey NO

Mandatory NO

Feature Name Enhanced Scheduling

GUI Value Range OFF(Off), ON(On) Enumeration Number/Bit OFF~0, ON~1 Unit None Actual Value Range OFF, ON

Recommended Value OFF(Off) Impact GlobalProcSwitch Parameter Relationship None

Modification

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Interruption Duration (min) Not involved Caution None Validation of Modification

If TTI bundling is enabled for the UE, you can configure TTI bundling through the UE to obtain more transmission chances within the delay budget on the VOIP air interface, improving uplink coverage.

Parent topic: GlobalProcSwitch

PdcchBndPcSw

MO CellDlpcPdcch

Parameter ID PdcchBndPcSw

Parameter Name PdcchBndPcSw

NE eNodeB

MML Command MOD CELLDLPCPDCCH

Meaning Indicates the switch that is used to enable and disable power control applied to the PDCCH carrying dedicated control information. If this parameter is set to ON, the PDCCH power is adjusted dynamically when the channel quality is extremely good or bad.

IsKey NO

Mandatory NO

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Feature Name Dynamic Downlink Power Allocation

GUI Value Range OFF, ON

OFF~0, ON~1

Unit None

Actual Value Range OFF, ON

Default Value OFF

Recommended Value OFF

Impact CellDlpcPdcch

None

Service Interrupted After Modification

Interruption Scope Not involved

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Impact on Radio Network Performance None Introduced in Version... V100R002C00 Attribute Radio

Initial Value Setting Source

Engineering Design

Parent topic: CellDlpcPdcch

Reference signal power

MO PDSCHCfg

Parameter ID ReferenceSignalPwr

Parameter Name Reference signal power

NE eNodeB

MML Command MOD PDSCHCFG

Meaning Indicates the reference signal power of the cell. For details, see 3GPP TS 36.213.

IsKey NO

Mandatory NO

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LBFD-002009 LBFD-002016

Feature Name Physical Channel Management Broadcast of system information Dynamic Downlink Power Allocation

Value Type Interval values

GUI Value Range -600~500

Not involved

Unit 0.1dBm

Actual Value Range -600~500

Default Value 182

Recommended Value No recommended value. This parameter must be set based on the power

specification of the RRU and the cell bandwidth.

Impact PDSCHCfg

None

Interruption Duration (min)

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Caution None

1) Coverage: If the value of ReferenceSignalPwr is too large, cross-coverage occurs. This causes interference to other cells. If the value of ReferenceSignalPwr is too small, coverage holes appear.

2) Interference: The setting of ReferenceSignalPwr varies depending on the interference from neighboring cells. A large interference margin is required where the interference is strong.

3) Channel estimation: A larger value of ReferenceSignalPwr leads to higher channel estimation accuracy, a lower demodulation threshold, and higher receiver sensitivity, but it causes stronger interference to

neighboring cells.

4) Capacity: A larger value of ReferenceSignalPwr brings better coverage, but a large value limits the power used for data transmission and hence decreases the system capacity.

Set ReferenceSignalPwr appropriately to ensure a reasonable tradeoff between coverage and capacity, effective channel estimation, and appropriate interference control.

Introduced in Version...

V100R001C00

Attribute Radio

Default/Recommended

Parent topic: PDSCHCfg

Qam64 enabled

MO PUSCHCfg

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Parameter ID Qam64Enabled

Parameter Name Qam64 enabled

NE eNodeB

MML Command MOD PUSCHCFG

Meaning Indicates whether 64QAM of the PUSCH is enabled. For details, see 3GPP TS 36.211.

IsKey NO

Mandatory NO

Feature Name UL 64QAM

GUI Value Range BOOLEAN_FALSE(False), BOOLEAN_TRUE(True)

BOOLEAN_FALSE~0, BOOLEAN_TRUE~1

Unit None

Actual Value Range BOOLEAN_FALSE, BOOLEAN_TRUE

Default Value BOOLEAN_TRUE(True)

Recommended Value No recommended value. The value should be set based on the 64QAM

capability of the UE.

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None

Engineering Design

Parent topic: PUSCHCfg

UeTimerConst

This chapter describes the parameters related to the UeTimerConst MO.

 Local cell identity

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 Constant N311

 Timer 300

 Timer 301

 Timer 310

 Timer 311

Parent topic: Radio-tree

Intra-Frequency Mobility Load Balancing

Threshold

MO CellMLB

Parameter ID IntraFreqMlbThd

Parameter Name Intra-Frequency Mobility Load Balancing Threshold

NE eNodeB

MML Command MOD CELLMLB

Meaning Indicates the threshold that is used to trigger the intra-frequency load balancing algorithm. When the cell load is equal to or lower than this threshold, the intra-frequency load balancing algorithm is triggered or stopped. This parameter is used with the load offset. That is, when the load is higher than the load threshold plus the load offset, the algorithm is triggered; when the load is lower than the load threshold, the algorithm is stopped. IsKey NO Mandatory NO Dynamic Attribute No Feature ID LBFD-001001 LOFD-001032

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Feature Name 3GPP R8 Specifications Intra-LTE Load Balancing

GUI Value Range 1~100

Not involved

Unit %

Actual Value Range 0.01~1

Recommended Value 60

Impact CellMLB

The difference between the intra-frequency load balancing threshold and the load offset should be greater than the DL cell dual-band intelligent shutdown threshold. The sum of the intra-frequency load balancing threshold and the load offset should be less than the DL admission load threshold. The sum of the load balancing threshold and the load offset cannot be greater than 100.

Not involved

Caution None

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Modification

This parameter value has an obvious impact on the use of the MLB

algorithm. A greater parameter value may cause the MLB algorithm fail to take full effect when the cell is overload. A smaller parameter value may cause too much signaling interaction and too many handovers.

V100R002C00

Attribute Radio

Engineering Design

Parent topic: CellMLB

SMeasure

MO HoMeasComm

Parameter ID SMeasure

Parameter Name SMeasure

NE eNodeB

MML Command MOD HOMEASCOMM

Meaning Indicates the measurement threshold. When the quality of the serving cell is higher than the threshold, the UE does not need to measure the intra-frequency, inter-intra-frequency, and inter-RAT neighboring cells. Thus, the power consumption is reduced.

IsKey NO

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Dynamic Attribute No Feature ID LBFD-00201801 LBFD-00201802 LOFD-001019 LOFD-001020 LOFD-001021 LOFD-001022 LOFD-001022

Feature Name Coverage Based Intra-frequency Handover Coverage Based Inter-frequency Handover

PS Inter-RAT Mobility between E-UTRAN and UTRAN PS Inter-RAT Mobility between E-UTRAN and GERAN PS Inter-RAT Mobility between E-UTRAN and CDMA2000 SRVCC to UTRAN

SRVCC to UMTS

GUI Value Range -141~-44

Not involved

Unit dBm

Actual Value Range -141~-44

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Recommended Value -44

Impact HoMeasComm

None

Default/Recommended

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Root sequence index

MO Cell

Parameter ID RootSequenceIdx

Parameter Name Root sequence index

NE eNodeB

MML Command ADD CELL

MOD CELL

Meaning Indicates the logical root sequence index, which is used to derive the preamble sequence. Each logical root sequence corresponds to a physical root sequence. For the mapping between logical root sequences and physical root sequences, see 3GPP TS 36.211.

IsKey NO

Mandatory YES

Feature Name Random Access Procedure

Not involved

Unit None

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Default Value None

Recommended Value None

Impact Cell

When the preamble format is 0, 1, 2, or 3 and HighSpeedFlag is HIGH_SPEED or SUPER_HIGH_SPEED, the relations between cell radius and root sequence index are as follows:

1) If 1 m <= cell radius <= 1 km, the value range of root sequence index is 24 to 819.

2) If 1 km < cell radius <= 1.5 km, the value range of root sequence index is 30 to 815.

3) If 1.5 km < cell radius <= 2 km, the value range of root sequence index is 36 to 809.

4) If 2 km < cell radius <= 2.6 km, the value range of root sequence index is 42 to 803.

5) If 2.6 km < cell radius <= 3.5 km, the value range of root sequence index is 52 to 795.

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index is 204 to 659.

Note that the cell radius cannot be larger than 32.8 km if the cell is a high-speed or super high-high-speed.

Yes

Interruption Scope Cell

Interruption Duration (min) 0.1 Caution None Validation of Modification

The parameter modification takes effect after the cell is automatically reset. Impact on Radio Network Performance None Introduced in Version... V100R001C00 Attribute Radio

Radio Planning

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Preamble format

MO Cell

Parameter ID PreambleFmt

Parameter Name Preamble format

NE eNodeB

MOD CELL

Meaning Indicates the preamble format used in the cell. For details, see 3GPP TS 36.211.

IsKey NO

Mandatory NO

Feature Name Random Access Procedure

Not involved

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Actual Value Range 0~4 Default Value 0 Recommended Value 0 Impact Cell Parameter Relationship

CellRadius <= 1,400 m: PreambleFmt for a FDD cell is set to 0 to 3, PreambleFmt for a TDD cell is set to 0 to 4;

1,400 m < CellRadius =< 14,000 m: PreambleFmt is set to 0 to 3; 1,400 m < CellRadius =< 14,000 m: PreambleFmt is set to 1 to 3; 29,000 m < CellRadius <= 77,000 m: PreambleFmt is set to 1 or 3; 77,000 m < CellRadius <= 100,000 m: PreambleFmt is set to 3.

Yes

The parameter modification takes effect after the cell is automatically reset. Impact on Radio Network Performance None Introduced in Version... V100R001C01

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Attribute Radio

Default/Recommended

Parent topic: Cell

Physical cell identity

MO Cell

Parameter ID PhyCellId

Parameter Name Physical cell identity

NE eNodeB

MOD CELL

Meaning Indicates the physical cell ID. For details, see 3GPP TS 36.331.

IsKey NO

Mandatory YES

Feature Name Broadcast of system information

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Not involved

Unit None

Actual Value Range 0~503

Impact Cell

None

Yes

The parameter modification takes effect after the cell is automatically reset. Impact on Radio Network Performance None Introduced in V100R001C00

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Version...

Attribute Radio

Radio Planning

Cell admin state

MO Cell

Parameter ID CellAdminState

Parameter Name Cell admin state

NE eNodeB

MML Command BLK CELL

Meaning Indicates the administration state, which can be Unblock, High block, Middle block, or Low block.

IsKey NO

Mandatory YES

Feature ID None

Feature Name None

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GUI Value Range CELL_UNBLOCK(Unblock), CELL_HIGH_BLOCK(High block), CELL_MIDDLE_BLOCK(Middle block), CELL_LOW_BLOCK(Low block) Enumeration Number/Bit CELL_UNBLOCK~0, CELL_HIGH_BLOCK~1, CELL_MIDDLE_BLOCK~2, CELL_LOW_BLOCK~3 Unit None

Actual Value Range CELL_UNBLOCK, CELL_HIGH_BLOCK, CELL_MIDDLE_BLOCK,

CELL_LOW_BLOCK

Impact Cell

None

Yes

Until the cell is unblock

Caution None

None

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Version...

Attribute Radio

Engineering Design

CellAlgoSwitch

This chapter describes the parameters related to the CellAlgoSwitch MO.

 AQM algorithm switch

 Based on Frequency Priority HO Switch

 BF algorithm switch

 CQI adjust algorithm switch

 DL schedule switch

 Downlink power control algorithm switch

 Dynamic adjust voltage algorithm switch

 Load balancing algorithm switch

 Local cell ID

 MUBF algorithm switch

 PUCCH algorithm switch

 RAC algorithm switch

 RACH algorithm switch

 RAN Sharing Mode Switch

 RLF detection algorithm switch

 SoundingRS algorithm switch

 Uplink power control algorithm switch

 Uplink schedule switch

SINR adjust switch

MO CellUlschAlgo

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Parameter ID SinrAdjustSw

Parameter Name SINR adjust switch

NE eNodeB

MML Command MOD CELLULSCHALGO

Meaning Indicates the switch of the SINR adjustment algorithm. This parameters indicates whether the SINR measured value is adjusted according to the ACK/NACK messages of the UL HARQ processes.

IsKey NO

Mandatory NO

Feature Name AMC

OFF~0, ON~1

Unit None

Default Value ON

Recommended Value ON

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None

Engineering Design

Parent topic: CellUlschAlgo

Semi-Persistent Scheduling Switch

MO CellUlschAlgo

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Parameter ID SpsScheSw

Parameter Name Semi-Persistent Scheduling Switch

NE eNodeB

Meaning Indicates whether the semi-persistent scheduling algorithm is used during talk spurts of the VoIP service.

IsKey NO

Mandatory NO

Feature Name VoIP Semi-persistent Scheduling

OFF~0, ON~1

Unit None

Impact CellUlschAlgo

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Relationship

Engineering Design

Uplink Scheduling Strategy

MO CellUlschAlgo

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Parameter Name Uplink Scheduling Strategy

NE eNodeB

Meaning Indicates the priority of the UL user scheduling algorithm and the policy of arranging the priority of users. According to the Max C/I scheduling policy, the UE with good-quality channels are scheduled, thus the spectral efficiency is very high. The QoS of and fairness among users, however, cannot be ensured. The Max C/I scheduling policy can be used to verify the maximum capacity of the system. The fairest scheduling policy is RR. When RR is used, the system capacity, however, is the smallest. Therefore, RR is used only to verify the upper limit of the scheduling fairness in the system. In application effects, the PF scheduling policy is between the previous two policies. Thus, PF can be used to verify the capacity, coverage, and fairness of the system. According to the EPF scheduling policy, the features such as user QoS, system capacity, and channel frequency selection are considered. The basic scheduling policy is used during the performance test. In commercial scenarios, you are advised to use the EPF scheduling policy.

IsKey NO

Mandatory NO

Feature ID LBFD-002025 LOFD-001015

Feature Name Basic Scheduling Enhanced Scheduling

GUI Value Range ULSCH_STRATEGY_EPF(EPF),

ULSCH_STRATEGY_MAX_CI(MAX_CI), ULSCH_STRATEGY_PF(PF), ULSCH_STRATEGY_RR(RR) Enumeration Number/Bit ULSCH_STRATEGY_EPF~0, ULSCH_STRATEGY_MAX_CI~1, ULSCH_STRATEGY_PF~2, ULSCH_STRATEGY_RR~3

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Unit None

Actual Value Range ULSCH_STRATEGY_EPF, ULSCH_STRATEGY_MAX_CI,

ULSCH_STRATEGY_PF, ULSCH_STRATEGY_RR

Default Value ULSCH_STRATEGY_EPF(EPF)

Recommended Value ULSCH_STRATEGY_EPF(EPF)

None

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Source

Configuration of UL Hopping

MO CellUlschAlgo

Parameter ID UlHoppingCfg

Parameter Name Configuration of UL Hopping

NE eNodeB

Meaning Indicates whether frequency hopping (FH) is enabled or disabled and the type and scheme used for FH.

IsKey NO

Mandatory NO

GUI Value Range HOPPING_OFF(Hopping off), HOPPING_TYPE1(Hopping Type 1), HOPPING_TYPE2(Hopping Type 2),

HOPPING_TYPE2_RANDOM(Hopping Type 2 Random)

Enumeration HOPPING_OFF~0, HOPPING_TYPE1~1, HOPPING_TYPE2~2, HOPPING_TYPE2_RANDOM~3

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Number/Bit

Unit None

Actual Value Range HOPPING_OFF, HOPPING_TYPE1, HOPPING_TYPE2,

HOPPING_TYPE2_RANDOM

Default Value HOPPING_OFF(Hopping off)

Recommended Value HOPPING_OFF(Hopping off)

If UlIcicFreqSwitch is set to ON, UlHoppingCfg does not take effect. In this case, the value of UlHoppingCfg is HOPPING_OFF by default.

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Default/Recommended

UpLink Virtual MIMO Switch

MO CellUlschAlgo

Parameter ID UlVmimoSw

Parameter Name UpLink Virtual MIMO Switch

NE eNodeB

Meaning Indicates the switch of enabling or disabling the UL virtual MIMO matching. When UlVmimoSw is set to ON, the eNodeB performs virtual MIMO matches for UEs according to the matching principles. The matched users transmit data on the same time frequency resources. Thus, the throughput and spectral efficiency of the system are increased. Before testing other basic functions of the product, you can disable the virtual MIMO matching function. When the cell has many UEs and the

throughput is relatively low, you are advised to enable the virtual MIMO matching function.

IsKey NO

Mandatory NO

Feature Name UL 2x2 MU-MIMO

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OFF~0, ON~1

Unit None

None

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Version...

Attribute Radio

Engineering Design

pre-allocation algorithm switch

MO CellUlschAlgo

Parameter ID PreAllocationSwitch

Parameter Name pre-allocation algorithm switch

NE eNodeB

Meaning Indicates the switch of the pre-allocation algorithm. The pre-allocation algorithm allocates resources to the light uplink traffic, the E2E delay of services is reduced. When this algorithm is enabled, the probability that the UE enters the DRX mode is reduced, and the battery usage time of the UE is shortened.

IsKey NO

Mandatory NO

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OFF~0, ON~1

Unit None

Default Value ON Recommended Value ON Impact CellUlschAlgo Parameter Relationship None

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V100R002C00

Attribute Radio

Engineering Design

adaptive HARQ switch

MO CellUlschAlgo

Parameter ID McsAdaptHarqSw

Parameter Name adaptive HARQ switch

NE eNodeB

Meaning Indicates the switch that is used to enable and disable UL adaptive HARQ. If this switch is set to OFF, UL data is retransmitted by means of non-adaptive synchronous HARQ. If this switch is set to ON, UL data is retransmitted by means of adaptive synchronous HARQ. If this switch is set to semi-ON, adaptive HARQ is triggered when a UL grant is delivered to an HARQ process that is suspended because of, for example, resource collision, activation of a measurement gap, or PDCCH congestion. Setting this parameter to ON helps reduce resource consumption by

retransmission, increase the cell throughput, and prevent retransmission conflicts. This, however, increases signaling overhead and therefore consumes more PDCCH resources.

IsKey NO

Mandatory NO

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Feature Name UL Synchronization HARQ

GUI Value Range ADAPTIVE_HARQ_SW_ON(On), ADAPTIVE_HARQ_SW_OFF(Off), ADAPTIVE_HARQ_SW_SMEION(SemiOn) Enumeration Number/Bit ADAPTIVE_HARQ_SW_ON~0, ADAPTIVE_HARQ_SW_OFF~1, ADAPTIVE_HARQ_SW_SMEION~2 Unit None

Actual Value Range ADAPTIVE_HARQ_SW_ON, ADAPTIVE_HARQ_SW_OFF,

ADAPTIVE_HARQ_SW_SMEION

Default Value ADAPTIVE_HARQ_SW_SMEION(SemiOn)

Recommended Value ADAPTIVE_HARQ_SW_SMEION(SemiOn)

None

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Engineering Design

FREQSELSW

MO CellDlschAlgo

Parameter ID FreqSelSw

Parameter Name FREQSELSW

NE eNodeB

MML Command MOD CELLDLSCHALGO

Meaning Indicates the switch of frequency selection scheduling. Frequency selection scheduling enables UEs to transmit data on the bands with good-quality channels.

IsKey NO

Mandatory NO

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Feature Name Dynamic Scheduling

OFF~0, ON~1

Unit None

Default Value ON Recommended Value ON Impact CellDlschAlgo Parameter Relationship None

Interruption Duration (min) No Caution None Validation of Modification

Impact on Radio Network

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Performance

V100R001C00

Attribute Radio

Engineering Design

Parent topic: CellDlschAlgo

DlScheSw

MO CellDlschAlgo

Parameter ID DlScheSw

Parameter Name DlScheSw

NE eNodeB

MML Command MOD CELLDLSCHALGO

Meaning Indicates the switch of the DL scheduling policy. EPF is an enhanced PF scheduling policy considering the QoS in terms of LTE features. Others are common scheduling policies, which do not consider the QoS of users. Max C/I is the algorithm of maximum carrier-to-interference power ratio. RR is the Round Robin algorithm. PF is the Proportional Fairness

algorithm.

IsKey NO

Mandatory NO

(53)

GUI Value Range DLSCH_PRI_TYPE_EPF(EPF), DLSCH_PRI_TYPE_PF(PF),

DLSCH_PRI_TYPE_MAX_CI(MAX C/I), DLSCH_PRI_TYPE_RR(RR)

DLSCH_PRI_TYPE_EPF~0, DLSCH_PRI_TYPE_PF~1, DLSCH_PRI_TYPE_MAX_CI~2, DLSCH_PRI_TYPE_RR~3

Unit None

Actual Value Range DLSCH_PRI_TYPE_EPF, DLSCH_PRI_TYPE_PF,

DLSCH_PRI_TYPE_MAX_CI, DLSCH_PRI_TYPE_RR

Default Value DLSCH_PRI_TYPE_EPF(EPF)

Recommended Value DLSCH_PRI_TYPE_EPF(EPF)

Impact CellDlschAlgo

None

No

(54)

Engineering Design

Parent topic: CellDlschAlgo

Minimum RX level

MO CellSel

Parameter ID Qrxlevmin

Parameter Name Minimum RX level

NE eNodeB

MML Command MOD CELLSEL

Meaning Indicates the minimum required RX level. This parameter is used in the formula of the cell selection criterion S.

IsKey NO

Mandatory NO

(55)

Feature ID LBFD-001001 LBFD-002009 LBFD-00201803

Feature Name 3GPP R8 Specifications

Broadcast of system information Cell Selection and Re-selection

GUI Value Range -70~-22

Not involved

Unit 2dBm

Actual Value Range -140~-44

Default Value -64 Recommended Value -64 Impact CellSel Parameter Relationship None

No (For the UE in idle mode, changes in this parameter affect cell selection.)

(56)

Caution None

If this parameter of a cell is increased, it is more difficult for the cell to meet criterion S and to become a suitable cell selected by a UE. If this parameter of a cell is decreased, it is easier for the cell to meet criterion S and to become a suitable cell selected by a UE. The parameter should be properly set so that the selected cells can provide signals that meet the quality requirement of basic services.

V100R001C00

Attribute Radio

Default/Recommended

Parent topic: CellSel

MRO

This chapter describes the parameters related to the MRO MO.

 MRO statistics number

 MRO optimization threshold

 MRO optimization period

 Pingpong ratio threshold

 Pingpong handover threshold

(57)

MO CellRacThd

Parameter ID GbrRbUseLowProportion

Parameter Name GBR use resource low proportion

NE eNodeB

MML Command MOD CELLRACTHD

Meaning Indicates the allowed lowest proportion of resources (either the uplink or downlink resources) to be occupied by GBR services. After an indication of high resource usage by GBR services is reported, an indication of low usage can be reported only when the proportion of resources currently occupied by GBR services becomes lower than the value of this parameter.

IsKey NO

Mandatory NO

Feature ID LBFD-001001 LBFD-002023

Feature Name 3GPP R8 Specifications Admission Control

Not involved

Unit %

(58)

Impact CellRacThd

GbrRbUseLowProportion should be less than or equal to GbrRbUseHighProportion.

A smaller value of this parameter results in a lower probability of switching from a high-usage indication to a low-usage indication about GBR services and a higher probability of GBR service admission failure. A larger value of this parameter results in a higher probability of the ping-pong effect in switching between a high-usage indication and a low-usage indication about GBR services.

V100R001C01

Attribute Radio

Engineering Design

(59)

GBR use resource high proportion

MO CellRacThd

Parameter ID GbrRbUseHighProportion

Parameter Name GBR use resource high proportion

NE eNodeB

Meaning Indicates the allowed highest proportion of resources (either the uplink or downlink resources) to be occupied by GBR services. When

LCEM_RAC_ALG_GBR_USAGE_SWITCH is turned on, new GBR services cannot be admitted if the proportion of PRB resources occupied by the ongoing GBR services is higher than the value of this parameter.

IsKey NO

Mandatory NO

(60)

Unit %

Actual Value Range 0~1.00

GbrRbUseHighProportion should be greater than or equal to GbrRbUseLowProportion.

A smaller value of this parameter results in a smaller quantity of resources to be occupied by GBR services and a lower admission success rate of GBR services, thereby causing a higher probability of resource waste. A larger value of this parameter results in a larger quantity of resources to be occupied by GBR services and a lower admission success rate in the system. When resources are insufficient, there is a higher probability of drops in non-GBR services, and thus the call drop rate increases.

(61)

Attribute Radio

Engineering Design

Parent topic: CellRacThd

Non-GBR max bearer number

MO CellRacThd

Parameter ID MaxNonGBRBearerNum

Parameter Name Non-GBR max bearer number

NE eNodeB

Meaning Indicates the maximum bearer number of non-GBR services in the cell.

IsKey NO

Mandatory NO

(62)

Not involved

Unit None

Actual Value Range 0~9000

Default Value 3000 Recommended Value 3000 Impact CellRacThd Parameter Relationship None

A smaller parameter value indicates fewer admitted non-GBR services; a greater parameter value indicates more admitted non-GBR services.

(63)

Attribute Radio

Engineering Design

QCI1 handover admission threshold

MO CellRacThd

Parameter ID Qci1HoThd

Parameter Name QCI1 handover admission threshold

NE eNodeB

Meaning Indicates the admission threshold for the handed-over service whose QCI is 1. This threshold is applicable in both UL and DL.

If the satisfaction rate of services with QCI of 1 is higher than or equal to this threshold, the handed-over service whose QCI is 1 can be admitted. If the satisfaction rate of services with QCI of 1 is lower than this threshold, the handed-over service whose QCI is 1 cannot be admitted.

IsKey NO

Mandatory NO

(64)

Not involved

Unit %

Actual Value Range 0.10~0.99

1. The sum of Qci1CongThd and CongRelOffset must be smaller than the value of Qci1HoThd.

2. The sum of Qci1HoThd and NewCopperUserOffset must be smaller than or equal to 100.

Impact on Radio Network

If the value of this parameter is too small, the admission threshold is too low for the handed-over service whose QCI is 1. In this case, the QoS of

(65)

Performance the existing services cannot be guaranteed.

If the value of this parameter is too large, the admission threshold is too high for the handed-over service whose QCI is 1. In this case, the admission success rate is low for services with QCI of 1.

V100R001C01

Attribute Radio

Engineering Design

QCI1 congest threshold

MO CellRacThd

Parameter ID Qci1CongThd

Parameter Name QCI1 congest threshold

NE eNodeB

Meaning Indicates the congestion threshold for services whose QCI is 1. This threshold is applicable in both UL and DL.

When the satisfaction rate of services with QCI of 1 in the cell becomes lower than this threshold, the services with QCI of 1 enter the congested state.

When the satisfaction rate of services with QCI of 1 in the cell becomes higher than the sum of this threshold and the congestion relief offset, the services with QCI of 1 leave the congested state.

(66)

IsKey NO

Mandatory NO

Feature Name 3GPP R8 Specifications Congestion Control

Not involved

Unit %

Actual Value Range 0~0.99

The sum of Qci1CongThd and CongRelOffset must be smaller than the value of Qci1HoThd.

(67)

A larger value of this parameter indicates a higher probability of system congestion. If the value is large, the system resource usage and the access success rate are low.

A smaller value of this parameter indicates a lower probability of

generating congestion indications and thus a higher access success rate. If the value is small, an excessive number of users might be admitted, but the load control actions are not taken in time to relieve the congestion. In this case, the overall QoS satisfaction rate of the existing services decreases and the call drop rate increases.

V100R001C01

Attribute Radio

Engineering Design

Uplink RB used ratio low threshold

MO CellRacThd

Parameter ID UlRbLowThd

Parameter Name Uplink RB used ratio low threshold

(68)

Meaning Indicates the threshold that determines whether the UL resource block (RB) usage is low. It is applicable to UL admission decision. If the MAC layer reports that the UL RB usage is less than this threshold, you can infer that the UL RB usage is low.

IsKey NO Mandatory NO Dynamic Attribute No Feature ID LBFD-001001 LBFD-002023 LBFD-002024

Feature Name 3GPP R8 Specifications Admission Control Congestion Control

Not involved

Unit %

Actual Value Range 0.10~1.00