Figure 4-2 shows the procedure for configuring an inter-frequency neighboring cell. Figure 4-2 Procedure for configuring an inter-frequency neighboring cell
Configure an inter-frequency neighboring cell as follows:
1. Add an inter-frequency neighboring frequency by running the following command: ADD EUTRANINTERNFREQ: LocalCellId=0, DlEarfcn=2850, UlEarfcnCfgInd=CFG, UlEarfcn=20850,CellReselPriorityCfgInd=CFG,CellReselPriority=3,SpeedDependSPCfg Ind=CFG,TReselEutranSfMedium=0DOT5_ENUM,TReselEutranSfHigh=0DOT75_EN
UM, MeasBandwidth=MBW75, QoffsetFreq=dB3, ThreshXhigh=2, ThreshXlow=30, QRxlevmin=-63, PmaxCfgInd=CFG, Pmax=1,
PresenceAntennaPort1=BOOLEAN_TRUE
Parameters in the command must be provided, and other parameters listed in Table 4-3 use default values. Table 4-3 lists related parameters.
The DL frequency of an E-UTRAN inter-frequency neighboring cell must be different from the DL frequency of a local cell.
Each cell can be configured with a maximum of 8 E-UTRAN inter-frequency neighboring frequencies.
Table 4-3 Inter-frequency neighboring cell parameters
ID Name Description
LocalCellId Local cell ID Meaning: Indicates the cell ID of the local cell. It uniquely identifies a cell within an eNodeB. GUI Value Range: 0~17
Unit: None
Actual Value Range: 0~17 MML Default Value: None Recommended Value: None Parameter Relationship: None
Service Interrupted After Modification: Not involved Impact on Radio Network Performance: None DlEarfcn Downlink
EARFCN
Meaning: Indicates the DL EARFCN of the neighboring cell on the neighboring E-UTRAN frequency. The DL EARFCN is calculated by using the following formula: DL carrier frequency (MHz) = Lowest frequency of the DL operating band + 0.1 x (DL EARFCN - Offset used to calculate the DL EARFCN). For example, if the DL EARFCN is 3100 in band 7 for a cell, the DL carrier frequency of the cell is calculated as 2620 + 0.1 x (3100 - 2750) = 2655 MHz.
Band 1: DL EARFCN range: 0 to 599, lowest frequency of the DL operating band: 2110;
Band 2: DL EARFCN range: 600 to 1199, lowest frequency of the DL operating band: 1930; Band 3: DL EARFCN range: 1200 to 1949, lowest frequency of the DL operating band: 1805; Band 4: DL EARFCN range: 1950 to 2399, lowest frequency of the DL operating band: 2110; Band 5: DL EARFCN range: 2400 to 2649, lowest frequency of the DL operating band: 869;
Band 6: DL EARFCN range: 2650 to 2749, lowest frequency of the DL operating band: 875;
Band 7: DL EARFCN range: 2750 to 3449, lowest frequency of the DL operating band: 2620;
ID Name Description
Band 8: DL EARFCN range: 3450 to 3799, lowest frequency of the DL operating band: 925;
Band 9: DL EARFCN range: 3800 to 4149, lowest frequency of the DL operating band: 1844.9; Band 10: DL EARFCN range: 4150 to 4749, lowest frequency of the DL operating band: 2110;
Band 11: DL EARFCN range: 4750 to 4999, lowest frequency of the DL operating band: 1475.9; Band 12: DL EARFCN range: 5010 to 5179, lowest frequency of the DL operating band: 729;
Band 13: DL EARFCN range: 5180 to 5289, lowest frequency of the DL operating band: 746;
Band 14: DL EARFCN range: 5280 to 5379, lowest frequency of the DL operating band: 758;
Band 17: DL EARFCN range: 5730 to 5849, lowest frequency of the DL operating band: 734;
Band 18: DL EARFCN range: 5850 to 5999, lowest frequency of the DL operating band: 860;
Band 19: DL EARFCN range: 6000 to 6149, lowest frequency of the DL operating band: 875;
Band 20: DL EARFCN range: 6150 to 6449, lowest frequency of the DL operating band: 791;
Band 21: DL EARFCN range: 6450 to 6599, lowest frequency of the DL operating band: 1495.9;
Band 32: DL EARFCN range: 17950 to 17999, lowest frequency of the DL operating band: 1990;
Band 33: DL EARFCN range: 36000 to 36199, lowest frequency of the DL operating band: 1900;
Band 34: DL EARFCN range: 36200 to 36349, lowest frequency of the DL operating band: 2010;
Band 35: DL EARFCN range: 36350 to 36949, lowest frequency of the DL operating band: 1850;
Band 36: DL EARFCN range: 36950 to 37549, lowest frequency of the DL operating band: 1930;
Band 37: DL EARFCN range: 37550 to 37749, lowest frequency of the DL operating band: 1910;
Band 38: DL EARFCN range: 37750 to 38249, lowest frequency of the DL operating band: 2570;
Band 39: DL EARFCN range: 38250 to 38649, lowest frequency of the DL operating band: 1880;
Band 40: DL EARFCN range: 38650 to 39649, lowest frequency of the DL operating band: 2300;
Band 41: DL EARFCN range: 39650 to 41589, lowest frequency of the DL operating band: 2496;
Band 42: DL EARFCN range: 41590 to 43589, lowest frequency of the DL operating band: 3400;
ID Name Description
Band 43: DL EARFCN range: 43590 to 45589, lowest frequency of the DL operating band: 3600;
Band 64: DL EARFCN range: 65236 to 65535, lowest frequency of the DL operating band: 2545;
Among the preceding bands, band 1 to band 32 are FDD bands, and other bands are TDD bands. In
addition, band 32 and band 64 are non-protocol-defined bands, and band 11 and band 13 are different from protocol-defined bands. For details, see 3GPP TS 36.104.
GUI Value Range: 0~45589,64436~65535 Unit: None
Actual Value Range: 0~45589,64436~65535 MML Default Value: None
Recommended Value: None Parameter Relationship: None
Service Interrupted After Modification: Not involved Impact on Radio Network Performance: None UlEarfcnCfgI nd Uplink EARFCN configure indicator
Meaning: Indicates whether to set the UL EARFCN. If this parameter is set to NOT_CFG, the UL EARFCN is the DL EARFCN plus 18000 in FDD mode and is the same as the DL EARFCN in TDD mode.
GUI Value Range: NOT_CFG(Not configure), CFG(Configure)
Unit: None
Actual Value Range: NOT_CFG, CFG
MML Default Value: NOT_CFG(Not configure) Recommended Value: NOT_CFG(Not configure) Parameter Relationship: None
Service Interrupted After Modification: No (And no impact on the UE in idle mode)
Impact on Radio Network Performance: None UlEarfcn Uplink
EARFCN
Meaning: Indicates the UL EARFCN of the neighboring cell on the neighboring E-UTRAN frequency. For an FDD cell, if no UL EARFCN is configured, the UL EARFCN equals the sum of the DL EARFCN and 18000. For a TDD cell, the UL EARFCN is calculated by using the following formula:
UL carrier frequency (MHz) = Lowest frequency of the UL operating band + 0.1 x (UL EARFCN - Offset used to calculate the UL EARFCN). For example, if the UL EARFCN is 21100 in band 7 for a cell, the UL carrier frequency of the cell is calculated as 2500 + 0.1 x (21100 - 20750) = 2535 MHz.
ID Name Description
frequency of the UL operating band: 1920;
Band 2: UL EARFCN range: 18600 to 19199, lowest frequency of the UL operating band: 1850;
Band 3: UL EARFCN range: 19200 to 19949, lowest frequency of the UL operating band: 1710;
Band 4: UL EARFCN range: 19950 to 20399, lowest frequency of the UL operating band: 1710;
Band 5: UL EARFCN range: 20400 to 20649, lowest frequency of the UL operating band: 824;
Band 6: UL EARFCN range: 20650 to 20749, lowest frequency of the UL operating band: 830;
Band 7: UL EARFCN range: 20750 to 21449, lowest frequency of the UL operating band: 2500;
Band 8: UL EARFCN range: 21450 to 21799, lowest frequency of the UL operating band: 880;
Band 9: UL EARFCN range: 21800 to 22149, lowest frequency of the UL operating band: 1749.9;
Band 10: UL EARFCN range: 22150 to 22749, lowest frequency of the UL operating band: 1710;
Band 11: UL EARFCN range: 22750 to 22999, lowest frequency of the UL operating band: 1427.9;
Band 12: UL EARFCN range: 23010 to 23179, lowest frequency of the UL operating band: 699;
Band 13: UL EARFCN range: 23170 to 23279, lowest frequency of the UL operating band: 776;
Band 14: UL EARFCN range: 23280 to 23379, lowest frequency of the UL operating band: 788;
Band 17: UL EARFCN range: 23730 to 23849, lowest frequency of the UL operating band: 704;
Band 18: UL EARFCN range: 23850 to 23999, lowest frequency of the UL operating band: 815;
Band 19: UL EARFCN range: 24000 to 24149, lowest frequency of the UL operating band: 830;
Band 20: UL EARFCN range: 24150 to 24449, lowest frequency of the UL operating band: 832;
Band 21: UL EARFCN range: 24450 to 24599, lowest frequency of the UL operating band: 1447.9;
Band 32: UL EARFCN range: 35950 to 35999, lowest frequency of the UL operating band: 1910;
Band 33: UL EARFCN range: 36000 to 36199, lowest frequency of the UL operating band: 1900;
Band 34: UL EARFCN range: 36200 to 36349, lowest frequency of the UL operating band: 2010;
Band 35: UL EARFCN range: 36350 to 36949, lowest frequency of the UL operating band: 1850;
ID Name Description
frequency of the UL operating band: 1930;
Band 37: UL EARFCN range: 37550 to 37749, lowest frequency of the UL operating band: 1910;
Band 38: UL EARFCN range: 37750 to 38249, lowest frequency of the UL operating band: 2570;
Band 39: UL EARFCN range: 38250 to 38649, lowest frequency of the UL operating band: 1880;
Band 40: UL EARFCN range: 38650 to 39649, lowest frequency of the UL operating band: 2300;
Band 41: UL EARFCN range: 39650 to 41589, lowest frequency of the UL operating band: 2496;
Band 42: UL EARFCN range: 41590 to 43589, lowest frequency of the UL operating band: 3400;
Band 43: UL EARFCN range: 43590 to 45589, lowest frequency of the UL operating band: 3600;
Band 64: UL EARFCN range: 65236 to 65535, lowest frequency of the UL operating band: 2545;
Among the preceding bands, band 1 to band 32 are FDD bands, and other bands are TDD bands. In
addition, band 32 and band 64 are non-protocol-defined bands, and band 11 and band 13 are different from protocol-defined bands. For details, see 3GPP TS 36.104.
GUI Value Range: 18000~45589,64436~65535 Unit: None
Actual Value Range: 18000~45589,64436~65535 MML Default Value: 18000
Recommended Value: None Parameter Relationship: None
Service Interrupted After Modification: No (And no impact on the UE in idle mode)
Impact on Radio Network Performance: None CellReselPrio rityCfgInd Inter frequency cell resel priority configure indicator
Meaning: Indicates whether to set the reselection priority of the neighboring E-UTRAN frequency. If the value of this parameter is not specified, the UE does not reselect to neighboring cells on the frequency.
GUI Value Range: NOT_CFG(Not configure), CFG(Configure)
Unit: None
Actual Value Range: NOT_CFG, CFG
MML Default Value: NOT_CFG(Not configure) Recommended Value: NOT_CFG(Not configure) Parameter Relationship: None
Service Interrupted After Modification: No (Modifications on this parameter would affect cell
ID Name Description
reselection of the UE in idle mode.)
Impact on Radio Network Performance: None CellReselPrio
rity
Inter frequency cell resel priority
Meaning: Indicates the cell reselection priority of the neighboring E-UTRAN frequency. It is contained in system information block type 5 (SIB5).
The UE decides whether to reselect a neighboring cell on the frequency based on the value of this parameter and the absolute priority of the serving cell.
If the value of this parameter is larger than the absolute priority of the serving cell, the UE starts measurements on neighboring cells on the frequency; then if the signal quality of some neighboring cells meets the related conditions, the UE starts cell reselection.
If the value of this parameter is smaller than the absolute priority of the serving cell, the UE starts the measurements only when the signal quality of the serving cell is poor; then if the signal quality of some neighboring cells meets the related conditions, the UE starts cell reselection. Frequencies used for different RATs must be assigned different cell reselection priorities. For details, see 3GPP TS 36.331. GUI Value Range: 0~7
Unit: None
Actual Value Range: 0~7 MML Default Value: 1 Recommended Value: 1
Parameter Relationship: If CellReselPriorityCfgInd is set to CFG, CellReselPriority must be set.
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: A larger value of this parameter leads to a higher probability of starting measurements on cells on the neighboring E-UTRAN frequency and also a higher probability of reselection to a cell on the frequency.
EutranReselT ime
EUTRAN reselection time
Meaning: Indicates the time threshold for inter-frequency cell reselection. A UE initiates a reselection to the inter-frequency neighboring cell only after the signal quality in the cell is better than that in the serving cell for a period defined by this parameter and, in addition, after the UE camps on the serving cell for longer than 1s. This parameter is contained in SIB5. For details, see 3GPP TS 36.331.
GUI Value Range: 0~7 Unit: s
ID Name Description
MML Default Value: 1 Recommended Value: 1 Parameter Relationship: None
Service Interrupted After Modification: No (And no impact on the UE in idle mode)
Impact on Radio Network Performance: None SpeedDepend SPCfgInd Speed dependent resel parameter configuring indicator
Meaning: Indicates whether to set the speed-dependent scaling parameters related to cell reselection.
If this parameter is set to NOT_CFG, speed-dependent cell reselections are not supported by default.
GUI Value Range: NOT_CFG(Not configure), CFG(Configure)
Unit: None
Actual Value Range: NOT_CFG, CFG
MML Default Value: NOT_CFG(Not configure) Recommended Value: NOT_CFG(Not configure) Parameter Relationship: None
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: None TReselEutran SfMedium Scaling factor of treseleutra in medium mobility state
Meaning: Indicates the scaling factor applied to the cell reselection duration for medium-mobility UEs. This parameter is delivered in SIB5. For details, see 3GPP TS 36.331.
GUI Value Range: 0DOT25_ENUM(0.25), 0DOT5_ENUM(0.5), 0DOT75_ENUM(0.75), 1DOT0_ENUM(1.0)
Unit: None
Actual Value Range: 0DOT25_ENUM,
0DOT5_ENUM, 0DOT75_ENUM, 1DOT0_ENUM MML Default Value: 0DOT25_ENUM(0.25) Recommended Value: None
Parameter Relationship: If SpeedDependSPCfgInd is set to CFG, TReselEutranSfMedium must be set.
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: A smaller value of this parameter results in a greater impact of the UE mobility state on the cell reselection duration within E-UTRAN, that is, results in a shorter duration. A larger value leads to a smaller impact.
ID Name Description SfHigh of treseleutra in
high mobility state
reselection duration for high-mobility UEs. This parameter is delivered in SIB5. For details, see 3GPP TS 36.331.
GUI Value Range: 0DOT25_ENUM(0.25), 0DOT5_ENUM(0.5), 0DOT75_ENUM(0.75), 1DOT0_ENUM(1.0)
Unit: None
Actual Value Range: 0DOT25_ENUM,
0DOT5_ENUM, 0DOT75_ENUM, 1DOT0_ENUM MML Default Value: 0DOT25_ENUM(0.25) Recommended Value: None
Parameter Relationship: If SpeedDependSPCfgInd is set to CFG, TReselEutranSfHigh must be set.
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: A smaller value of this parameter results in a greater impact of the UE mobility state on the cell reselection duration within E-UTRAN, that is, results in a shorter duration. A larger value leads to a smaller impact.
MeasBandWi dth
Measurement bandwidth
Meaning: Indicates the measurement bandwidth of the inter-frequency neighboring cell on the frequency. The setting of this parameter depends on the bandwidth configuration of the cell. In E-UTRAN, a cell
bandwidth is also expressed in units of resource blocks (RBs). Cell bandwidths 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz correspond to 6 RBs, 15 RBs, 25 RBs, 50 RBs, 75 RBs, and 100 RBs,
respectively.
GUI Value Range: MBW6(1.4M), MBW15(3M), MBW25(5M), MBW50(10M), MBW75(15M), MBW100(20M)
Unit: MHz
Actual Value Range: MBW6, MBW15, MBW25, MBW50, MBW75, MBW100
MML Default Value: None Recommended Value: None Parameter Relationship: None
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: None QoffsetFreq Frequency
offset
Meaning: Indicates the frequency offset of the neighboring cell on the frequency. It is delivered in system information block type 5 (SIB5). It is used in the evaluation for cell reselection and for the triggering and
ID Name Description
stopping of event A4.
GUI Value Range: dB-24(-24dB), dB-22(-22dB), dB-20(-20dB), dB-18(-18dB), dB-16(-16dB), dB-14(-14dB), dB-12(-12dB), dB-10(-10dB), dB-8(-8dB), dB-6(-6dB), dB-5(-5dB), dB-4(-4dB), dB-3(-3dB), dB-2(-2dB), dB-1(-1dB), dB0(0dB), dB1(1dB), dB2(2dB), dB3(3dB), dB4(4dB), dB5(5dB), dB6(6dB), dB8(8dB), dB10(10dB), dB12(12dB), dB14(14dB), dB16(16dB), dB18(18dB), dB20(20dB), dB22(22dB), dB24(24dB) Unit: dB
Actual Value Range: dB-24, dB-22, dB-20, dB-18, dB-16, dB-14, dB-12, dB-10, dB-8, dB-6, dB-5, dB-4, dB-3, dB-2, dB-1, dB0, dB1, dB2, dB3, dB4, dB5, dB6, dB8, dB10, dB12, dB14, dB16, dB18, dB20, dB22, dB24 MML Default Value: dB1(1dB) Recommended Value: dB1(1dB) Parameter Relationship: Not involved Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: A larger value of this parameter leads to a lower probability of reselection to a neighboring cell on the frequency. ThreshXhigh Inter frequency
high priority threshold
Meaning: Indicates the RX level required for a neighboring cell on the frequency to become a
candidate for reselection if the priority of the frequency is higher than that of the serving frequency. After measurements are started for neighboring cells on the frequency, the UE reselects to a neighboring cell on the frequency only if the RX level of the cell is better than the value specified by this parameter for a
time-to-trigger. For details, see 3GPP TS 36.331. GUI Value Range: 0~31
Unit: 2dB
Actual Value Range: 0~62, step:2 MML Default Value: 11
Recommended Value: 11 Parameter Relationship: None
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: With other conditions unchanged, a larger value of this parameter leads to a lower probability of reselection to the cell on the higher-priority frequency, and a smaller value of
ID Name Description
this parameter leads to a higher probability. ThreshXlow Inter frequency
lower priority threshold
Meaning: Indicates the minimum RX level required for a neighboring cell on the frequency to become a candidate for reselection if the priority of the frequency is lower than that of the serving frequency. After measurements are started for neighboring cells on the frequency, the UE reselects to a neighboring cell on the frequency only if the RX level of the serving cell is lower than a specified threshold and that of the cell is higher than the value specified by this parameter for a time-to-trigger. For details, see 3GPP TS 36.331. GUI Value Range: 0~31
Unit: 2dB
Actual Value Range: 0~62, step:2 MML Default Value: 11
Recommended Value: 11 Parameter Relationship: None
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: With other conditions unchanged, a larger value of this parameter leads to a lower probability of reselection to a
neighboring cell on the lower-priority E-UTRAN frequency, and a smaller value of this parameter leads to a higher probability.
QRxLevMin Minimum required RX level
Meaning: Indicates the RX level required for a neighboring cell on the frequency to become a suitable cell for selection. It is included in criteria S and used in the evaluation for cell selection. During the evaluation for cell reselection, the UE performs the following calculation: Srxlev = Measured RSRP value of a neighboring cell on the frequency - Value of this parameter - Compensated power. If Srxlev for a cell is better than a threshold for a time-to-trigger, reselection to the cell is started. For details, see 3GPP TS 36.304. GUI Value Range: -70~-22
Unit: 2dBm
Actual Value Range: -140~-44, step:2 MML Default Value: -64
Recommended Value: -64
Parameter Relationship: A larger value of this
parameter leads to a lower probability of a cell meeting criteria S and becoming a suitable cell for cell selection. A smaller value of this parameter leads to a higher probability. Set this parameter properly so that the selected cell can provide signals that meet the quality
ID Name Description
requirement of basic services.
Service Interrupted After Modification: No (Modifications on this parameter would affect cell reselection of the UE in idle mode.)
Impact on Radio Network Performance: A larger value of this parameter leads to a lower probability of a neighboring cell on the frequency meeting criteria S and becoming a suitable cell for selection. A smaller value of this parameter leads to a higher probability. Set this parameter properly so that the selected cell can provide signals that meet the quality requirement of basic services.
PmaxCfgInd PMAX configure indicator
Meaning: Indicates whether to set the maximum power