Parameters to improve
ERAB
Drop Rate
1. SrbProbeschSwitch: Indicates whether to proactively schedule uplink signaling. Iif this option is selected, the eNodeB triggers proactive scheduling of uplink signaling for once when the
eNodeB determines that data corectly scheduled in the downlink is control-plane signaling that requires the uplink signaling feedback and does not receive the feedback within a specified
period of time. This option applies only to LTE FDD and LTE TDD
It is recommended that this option be selected when the RRC connectiorn setup success rate, E-RAB setup success rate, or service drop rate of the live network needs to be guaranteed. It is
recommended that this option be deselected if the RRC connection setup success rate, E-RAB setup success rate, or service drop rate is normal.
2. UIDrbProactiveschSwitch: Indicates whether to enable proactive uplink scheduling. if this option is selected, proactive uplink scheduling is triggered once when only CQL-only scheduling
is performed in the uplink within a period after dowrnlink data transmission. If this option is deselected, proactive uplink scheduling is not triggered. This option applies only to LTE FDD and
LTE
If this
uplink
is performed more frequently to ensure that the RRC or E-RAB setup success rate and service drop rate do not deteriorate. However,
TDD.
option is selected,
scheduling
more frequent uplink scheduling increases the uplink RB and CCE usage. If this option is deselected, network performance is not affected.
3. RrcReestoptSwitch:WITHx2 NO NCELL REEST SWITCH: This option specifies whether the eNodeB supports RRC connection reestablishment when an X2 interface is configured
between the source and target eNodeBs but the source and target cells are notconfigured as neighboring cells of each other. This type of RRC connection reestablishment is supported only
if
thisoption is selected. Thisoption applies only to
option is selected, the success rate of RRC connection reestablishment increases when the following
FDD
LTE and
LTE TDD.
If thiscontext procedure occurs 2. The source and target cells are not configured as neighboring cells of each othe
conditions are all met: 1.An RRC connection reestablishment
without
theUE
3. An X2 interiface is configured between the source and target eNodeBs. Deselecting this option has no impact on network performance.
4. HoRarfwrEnhancedSwitchlndicates whether the eNodeB increasesthetransmit power of the RandomAccess Response (RAR) message when a UE is being handed over to the target
cell and repeatedy sends dedicated preambles. If this parameter is setto OFFIOFF, the eNodeB does not increase the transmit power ofthe RAR message sent to the UE that is being
over
cell repeatedly sends dedicated preambles, the eNodeB increases the
to
parameter is set to ON(ON) and a
being
to the
handedover thetargetcell f this
UEthatof the
is handed
targetThe transmit power of the RAR
message be increased by a maximum of 6
transmit
powerof
the
RAR
message
by
another
3
dB
each
time
on
the
basis
RakspPwr
parameter
value.
dB. Thisparameter appliesonlyto LTE FDD and LTE TDD. When downlink coverage is weak or interference is strong, setting this parameter to ON increases the dedicated-preamble-based
can
access success rate inthe cell, increases the handover success rate, and decreases the handover delay
the
selection of the PDCCH CCE aBRregation level for RAR retransmission in the case of
5. HOSucReteBoostOptSwitchndiates
non-contention
based handovers and the number of RBs
a8Tregation levelischanged to level&for both LTE FDD
acces preamble. If this option is selected, the PDCCH
all
cated
for
Msg3
tranmitted
based
on
non
contention
based
random
and TDD celswhentheRAR message foron contention based handovers is retransanmitted and, for 1DD cell,the eNodeßB allocatesthreeRasfor Msg3 transmittedbasedon anon
CCE
contention-based random
value
access
preamble.
If this
option is deselected, the PDCCH
CCE aggregation level for RAR transmission in the case of non-contention-based handovers is fixed to the
FDD and TDD cells and, for TDD cells, the eNodeß allocates eight RBs for Msg3 transmitted based ona nonsmall bandwidths such as 1.4 MHz and 3 MHz, it is recommended that the
be
of the ComSigCongreglv parameter in the CellPdcchAlgo MO in both LTE
contention-based random
access
preamble.
For cells
working on
deselected. This option applies only to LTE FDD and LTE TDD.
HOSuccRateBoostOptSwitch option
Parameters to improve Uplink Packet Loss
/optimize for QCI1 as follow
ADD CELLPREALLOCGROUP: LocalCellld=xxx,
MOD CELLQCIPARA: LocalCelld=xxx, Qci=1,
Preallocation ParaGroupld=1, PreallocationMinPeriod=5, SmartPreallocationDuration=50;
PreallocationParaGroupld=1;
//for other QCl you can disable the pre-schedule to optimize the uplink packet loss
ADD CELLPREALLOCGROUP: LocalCellld=xxx, Preallocation
ParaGroupld=2,
MOD CELLQCIPARA: LocalCellld=xxx, Qci=x,
PreallocationSwitch=Off;
Preallocation ParaGroupld=2;
MML Object
CELLPDCCHALGO
CELLPDCCHALGO
CELLPDCCHALGO
CELLPUCCHALGO
CELLULSCHALGO
CELLULsCHALGO
CELLULSCHALGOD
CELLULSCHALGO
Parameter1D
|VOICEPDcCHOTLPADILOWERLMT
VOLTEPDCCHS INROFFSET
Suggestion
FDD-20/TDD:255
30
VOLTE PDCCH CCE SELECT SWITCH@yOLTEP
DCCHOPTSWITCH
SRIPERIODOPTFORVOIPSWOSRIALGOSWI TCH FDD ONLY ON
STATISTICNUMTHDEORTT IBEXIT
N80 TTIB EXIT(80)
ULDELAYSCHSTRATEGY
VOIP AND DATA DELAYSCH
ULENHENCEDVOIPSCHSW
ULVOIPRLCMAXSEGNUM
if UVoipCrosslayerOptSwitch is disable: 20,for FDD cell
if UVoipCrosslayerOptISwitch is enable 23 for FDD cell
TDD 4
DRXPARAGROUP
ENTERDRXSWITCH
OFF