Huawei LTE Downlink Throughput Parameters
Parameter/Counter
MO/Feature
Impact on
Throughput
MML to Implement
Controls PDCCH
PDCCH Symbol
Number
CELL
capacity which
SET CELLALGOSWITCH
affects scheduling
PDCCHSYMNUM=3
capability
CQI Adjustment
MCS High Level
CA Configuration
Transport Block Size
Factor
RB Scheduling
Strategy
MIMO Mode
PMI Feedback
PDSCH Resource
Allocation
DL Power Boost
Rank Indicator
Override
CELL
CELL
CELL
Optimizes MCS
SET CQIADJUST CELLID=x
selection accuracy
CQIAdj=2
Sets maximum
modulation scheme
Enables carrier
aggregation
Maps resource
CELL
blocks to bit
capacity
CELL
CELL
CELL
CELL
CELL
CELL
Determines PRB
allocation method
Positive and Negative
Impact on KPIs
(+) Scheduling capacity,
(-) Reduces PDSCH
resources
(+) Improves BLER, (-)
Conservative settings
reduce throughput
SET CELLMIMOPARA
(+) Peak throughput, (-)
CELLID=x
May increase BLER if too
MaxMCSHighLevel=28
high
SET CACFG CELLID=x
(+) Overall throughput,
CASCENARIO=INTER
(-) Higher UE power
CATYPE=EN
consumption
(+) Directly impacts
SET TBSFACTOR CELLID=x
maximum data rate, (-)
TBSFACTOR=1.0
May increase HARQ
retransmissions
SET SCHEDULESWITCH
CELLID=x
SCHEDSTRATEGY=PF
(+) User
fairness/throughput
balance, (-) May reduce
peak rates
Sets spatial
SET MIMOMODE
(+) Throughput via
multiplexing
CELLID=x
spatial streams, (-)
capabilities
MIMOMODE=CL-MIMO
Processing overhead
Controls UE channel
SET PMIFEEDBACK
(+) MIMO efficiency, (-)
feedback
CELLID=x ENABLE=TRUE
Signaling overhead
Configures PDSCH
SET CELLPARALOCK
(+) Coverage or
resource
CELLID=x
capacity, (-) Control/data
distribution
PDSCHPOWER=8
channel tradeoff
SET POWERBOOST
(+) Cell edge
CELLID=x
throughput, (-) Increases
PDSCHBOOST=2
interference
Forces specific
SET RIOVERRIDE CELLID=x
(+) MIMO stability, (-)
MIMO rank
ENABLE=TRUE RI=2
Suboptimal for some RF
Increases specific
channel power
Parameter/Counter
MO/Feature
Impact on
Throughput
MML to Implement
Positive and Negative
Impact on KPIs
conditions
RI Thresholds
RS Power
PA Parameter
CELL
CELL
CELL
Controls rank
SET RITHRESHOLD
adaptation
CELLID=x RI1TO2=18
thresholds
RI2TO3=24
Reference signal
SET RSPOWER CELLID=x
power setting
RSPOWER=18
Power allocation
SET PAPARAM CELLID=x
scheme
PA=1
Artificial load
Virtual Cell Load
CELL
TDD UL/DL
Configuration
Special Subframe
Configuration
CELL
CELL
CELL
CELL
Configuration
ABS Configuration
CELL
CELL
Higher values reduce
PDSCH power
(+) Optimizes power
distribution, (-) May
reduce coverage
Intelligent random
SET SMARTRACH
(+) Access success rate,
access control
CELLID=x ENABLE=TRUE
(-) Can increase latency
Frame structure for
SET TDDCFG CELLID=x
TDD cells
ULDLCFG=2
DwPTS/GP/UpPTS
SET SPECIALSUBFRAME
configuration
CELLID=x SSCFG=7
information
for interference
coordination
ICIC Static
(+) Cell coverage, (-)
limit peak rates
Zero-power CSI-RS
CELL
cause throughput loss
CELLID=x VCELLLOAD=20
reference signals
ZP CSI-RS
Suboptimal settings
(+) User fairness, (-) May
Channel state
CSI-RS Configuration
optimization, (-)
SET SCHEDPARACFG
parameter for
scheduling
Smart RACH
(+) MIMO rank
(+) DL capacity with
higher DL subframes, (-)
Reduces UL capacity
(+) DL/UL balance, (-)
Transition period
overhead
SET CSIRSCFG CELLID=x
(+) MIMO performance,
CSIRSCFGID=0
(-) Overhead on PDSCH
SET ZPCSIRSCFG CELLID=x
ENABLE=TRUE
(+) Interference
management, (-)
Resource overhead
Inter-cell
SET ICICSTATIC CELLID=x
(+) Cell edge
interference
RBSTARTPERCENT=0
throughput, (-) Reduces
coordination
RBENDPERCENT=75
bandwidth utilization
SET ABSCFG CELLID=x
(+) Small cell
ABSENABLE=TRUE
throughput, (-) Reduces
ABSPATTERN=0x0F0F
macro capacity
Almost blank
subframes
Parameter/Counter
MO/Feature
Impact on
Throughput
Coordinated
CoMP Mode
CELL
multipoint
transmission
RRC Inactivity Timer
TTI Bundling
PDCP Discard Timer
HARQ Maximum
Retransmissions
RLC AM/UM Mode
RLC Segmentation
GBR Service Flow
Priority
AMBR Limits
UECONN
CELL
PDCP
RLC
QOS
QOS
transitions
INACTIMER=10
Transmission time
interval bundling
QOS
CELL
TM Mode
CELL
Configuration
CELLID=x
TTIENABLE=TRUE
SET PDCPDISCARDTIMER
discard behavior
CELLID=x DLTIMER=200
retransmission
Selects RLC mode
Positive and Negative
Impact on KPIs
(+) Cell edge
throughput, (-) Backhaul
requirements
(+) Resource efficiency,
(-) State transition
overhead
(+) Coverage reliability,
(-) Resource utilization
(+) Resource efficiency,
(-) May impact
application performance
SET HARQMAXRETX
(+) Reliability, (-) Higher
CELLID=x MAXRETX=4
values increase latency
SET RLCMODE CELLID=x
MODE=AM
(+) Reliability in AM
mode, (-) Overhead
compared to UM
Controls data
SET RLCSEGMENT
(+) Adaptability to
packet
CELLID=x
conditions, (-)
segmentation
SEGMENTENABLE=TRUE
Processing overhead
Guaranteed bit rate
SET QOSPRIORITY
traffic handling
CELLID=x GBRPRIORITY=2
Aggregate
SET AMBRLIMITS CELLID=x
maximum bit rate
UEAMBRDL=20000
class identifier
settings
DRX Configuration
SET TTIBUNDLING
Controls packet
Quality of service
QCI Configuration
COMPMODE=JT
SET INACTIMER CELLID=x
attempts
RLC
SET COMPCFG CELLID=x
Controls UE state
Number of
CELL
MML to Implement
SET QCICFG CELLID=x
QCI=7 PDCPPRIORITY=5
(+) Service guarantees,
(-) Less flexible
scheduling
(+) Fair resource
allocation, (-) Caps peak
performance
(+) Service
differentiation, (-)
Complex configuration
Discontinuous
SET DRXPARAM CELLID=x
(+) UE battery life, (-)
reception settings
ONDURATIONTIMER=20
May increase latency
Transmission mode
SET TMMODE CELLID=x
(+) Appropriate for
selection
TMMODE=4
conditions, (-) Sub-
Parameter/Counter
MO/Feature
Impact on
Throughput
MML to Implement
Positive and Negative
Impact on KPIs
optimal modes reduce
throughput
CQI Reporting Mode
CQI Reporting
Periodicity
PUCCH Resources
UL Power Control
SRS Configuration
LAA/LTE-U
Configuration
RRU Tx Power
Cell Range Extension
CELL
CELL
CELL
CELL
CELL
CELL
RRU
CELL
CQI feedback
configuration
SET CQIREPORTMODE
CELLID=x
MODE=WIDEBAND
How often UE
SET CQIREPORTPERIOD
reports CQI
CELLID=x PERIOD=10
UL control channel
resources
Controls UE
transmit power
conditions, (-) Tradeoff
between accuracy and
overhead
(+) Adaptability to
conditions, (-) Signaling
overhead
SET PUCCHRES CELLID=x
(+) UL control channel
FORMAT1=36
capacity, (-) Reduces
FORMAT3=12
PUSCH resources
SET ULPOWERCONTROL
CELLID=x
P0NOMINAL=-90
Sounding reference
SET SRSCFG CELLID=x
signal settings
ENABLE=TRUE BWCFG=7
License assisted
SET LAACFG CELLID=x
access settings
ENABLE=TRUE
Transmitter power
SET RRUTXPOWER
settings
RRUID=x TXPOWER=46
Biases cell selection
(+) Optimized for
SET CELLRANGE CELLID=x
BIAS=6
(+) UL reliability, (-) UE
battery consumption
(+) UL channel
estimation, (-) Overhead
on PUSCH
(+) Additional spectrum,
(-) Coexistence
challenges
(+) Coverage, (-)
Interference to
neighbors
(+) Load balancing, (-)
May degrade user
experience
(+) Small cell
EICIC
CELL
Enhanced ICIC
SET EICIC CELLID=x
performance, (-)
configuration
ENABLE=TRUE
Configuration
complexity
LA (Link Adaptation)
Mode
CELL
Controls MCS
SET LAMODE CELLID=x
selection approach
MODE=OUTER_LOOP
(+) Throughput
optimization, (-)
Sensitivity to conditions
Parameter/Counter
MO/Feature
Impact on
Throughput
MML to Implement
Positive and Negative
Impact on KPIs
(+)
LA Target BLER
CELL
Target block error
SET LABLER CELLID=x
Reliability/throughput
rate
TARGET=0.1
balance, (-) Conservative
settings limit throughput
Maximum Users per
TTI
Frequency Selective
Scheduling
PRB Preferences
CELL
CELL
CELL
Limits concurrent
SET MAXTTIUSERS
users
CELLID=x MAXUSERS=12
RB allocation based
SET FSSENABLE CELLID=x
on channel quality
ENABLE=TRUE
Configure preferred
PRBs
(+) Processing efficiency,
(-) May create
scheduling delays
(+) Channel-aware
scheduling gains, (-)
Scheduling complexity
SET PRBPREFERENCE
(+) Interference
CELLID=x
avoidance, (-) Reduced
PATTERN=0xFFFF0000
spectrum utilization
(+) Controls resource
SINR Threshold
CELL
Signal quality
SET SINRTHRESHOLD
allocation quality, (-) Too
threshold
CELLID=x THRESHOLD=10
high reduces scheduling
options
Modulation
Restriction
Bandwidth Allocation
Priority
CELL
CELL
Restricts highest
modulation
CELL
(+) Stability in poor
CELLID=x
conditions, (-) Caps peak
MAXMOD=64QAM
rates
Resource allocation
SET BWPRIORITY CELLID=x
priority
PRIORITY=HIGH
MAC layer
MAC Scheduler Type
SET MODRESTRICT
scheduling
algorithm
SET MACSCHED CELLID=x
TYPE=ADVANCED
(+) Resource allocation
control, (-) May cause
unfairness
(+) Algorithm
optimization, (-)
Processing requirements
Key Use Cases
1. Macro Coverage Optimization
Parameters: RS Power, PA Parameter, DL Power Boost, RI Thresholds
MML: SET RSPOWER CELLID=x RSPOWER=19 , SET POWERBOOST CELLID=x PDSCHBOOST=2
Scenario: Enhances coverage and throughput for cell edge users in macro deployments
2. High-Density Urban Capacity Enhancement
Parameters: PDCCH Symbol Number, MCS High Level, Frequency Selective Scheduling, CA
Configuration
MML: SET CELLALGOSWITCH PDCCHSYMNUM=2 , SET FSSENABLE CELLID=x ENABLE=TRUE
Scenario: Maximizes throughput in areas with high user density and good RF conditions
3. Small Cell Deployment Optimization
Parameters: ABS Configuration, EICIC, Cell Range Extension, CoMP Mode
MML: SET ABSCFG CELLID=x ABSENABLE=TRUE ABSPATTERN=0x0F0F , SET EICIC CELLID=x
ENABLE=TRUE
Scenario: Improves HetNet performance with macro and small cell coordination
4. VoLTE Quality Enhancement
Parameters: QCI Configuration, HARQ Maximum Retransmissions, RLC Mode
MML: SET HARQMAXRETX CELLID=x MAXRETX=6 , SET QCICFG CELLID=x QCI=1 PDCPPRIORITY=1
Scenario: Ensures voice reliability while maintaining data throughput
5. Interference Limited Environment
Parameters: ICIC Static Configuration, PRB Preferences, ZP CSI-RS, RI Override
MML: SET ICICSTATIC CELLID=x RBSTARTPERCENT=0 RBENDPERCENT=75 , SET ZPCSIRSCFG
CELLID=x ENABLE=TRUE
Scenario: Mitigates interference in dense urban or high-rise environments
6. Stadium/Venue Optimization
Parameters: LA Mode, Maximum Users per TTI, Virtual Cell Load, CQI Reporting Periodicity
MML: SET MAXTTIUSERS CELLID=x MAXUSERS=16 , SET CQIREPORTPERIOD CELLID=x PERIOD=5
Scenario: Handles rapid fluctuations in load and maintains throughput during events