Idle Mode Mobility
Measurements in LTE
LTE Measu Measurements rements Intra LTE measurements ( from LTE to LTE)
• UE measurements – CQI measurements – Reference Signal Received Power (RSRP) – Reference Signal Received Quality (RSRQ) • eNB me meas asur urem emen ents ts – Non standardized (vendor specific): TA, Average RSSI, Average SINR, detected PRACH preambles, transport channel BLER – Standardized: DL RS Tx Power, Received Received Interference Interference Power, Thermal Thermal Noise Noise Power
Measurements from LTE to other systems • UE measurements are mainly intended for handover. – UTRA FDD: CPICH RSCP, CPICH Ec/No and carrier RSSI – GSM: GSM carrier RSSI – UTRA TDD: carrier RSSI, RSCP, P-CCPCH CDMA2000: 1xRTT Pilot Strength, HRPD Pilot Strength
UE Measurements: RSRP & RSRQ RSRQ RSRP (Reference Signal Received Power) • Average of power levels (in [W]) received across all Reference Signal symbols within the considered measurement frequency bandwidth.
• UE only takes measurements from the cell-specific Reference Signal elements of the serving cell, this makes RSRP results load and MIMO/diversity independent. independent. If receiver diversity is in use by the UE, the reported value shall s hall not be lower than the corresponding RSRP of any of the individual diversity branches
Received Signal Strength Indicator (RSSI) • RSSI comprises the linear average of the total received power (in [W]) observed only in OFDM symbols containing reference symbols for antenna port 0, 0, in the measurement bandwidth, over N number of resource blocks by the UE from all sources, including co-channel serving and non-serving cells, adjacent channel interference, thermal noise etc.
RSRQ (Reference Signal Received Quality) • Defined as the ratio N ×RSRP/(E-UTRA ×RSRP/(E-UTRA carrier RSSI), RSSI) , where N is N is the number of RBs of the E-UTRA carrier RSSI measurement bandwidth. The measurements in the numerator and denominator shall be made over the same set of resource blocks
Cell Selection
Cell Selection Procedure 1) UE creates a candidate list of potential cells to camp on. on . Two possible search procedures: Selection: UE scans all RF channels to find a suitable cell. cell. On each carrier, • Initial Cell Selection: carrier, the UE searches for the strongest cell and reads information. information. Once the UE has found the suitable cell for the selected PLMN, the UE creates a candidate list consisting of this cell and its neighboring cells as received in measurement control information information.. • Stored Information Cell Selection (optionally) This procedure requires information stored from previously received measurement measurement control information elements (cell parameters, carrier frequencies, etc.). After Af ter the UE has found a suitable cell for the selected PLMN, candidate list is created same as the initial cell selection process. 2) Each cell on the candidate list is evaluated according according to the selection criteria S 3) After selecting a suitable cell (S criterion fulfilled) for camp on, UE reports this event to NAS for registration procedures. procedures . If the registration normally“ state. is successful, the UE enters into "camped " camped normally“
Initial Selection - Carri Carrier er 1: strongest cell - Carri Carrier er 2: strongest cell - Carr Carrie ierr i …. …... Stored Information Selection
S – Cr Crite iteri rion on Cell Cell Se Sele lecti ction on UE selects a eUTRA cell if the S (selection) criteria is fulfilled: Srxlev > 0 Srxlev = Qrxlevmeas – Qrxlevmeas – (Qrxlevmin* Qrxlevmin * + Qrxlevminoffset**) - Pcompensation UE measurement (RSRP RSRP))
SIB1 Parameter
SIB1 Parameter
Pcompensation = max max (PEMAX* (PEMAX*** ** – PUMAX, PUMAX, 0) 0) (dB) SIB1 Parameter
qrxlevmin
* Qrxlevmin = LNCEL: qrxlevmin ** Qrxlevminoffset = LNCEL: qRxLevMinOffset qRxLevMinOffset (used (used only when camped in VPLMN) *** PEMAX = LNCEL: pMaxOwnCell PUMAX is UE class specific max. UL Tx power pMaxOwnCell Used to calculate Pcompensation LNCEL; -30..34dBm; 1dBm; -
Minimum required RSRP level LNCEL; -140…-44dBm; 2dBm; -
qRxLevMinOffset Affects minimum required RSRP level LNCEL; 2..16 dB; 2dB; -
S – Cr Crite iteri rion on Cell Cell Se Sele lecti ction on Cell size defining parameters: • Qrxlevmin
I am outside
☺
I am inside, but have not enough power pMaxOwnCell Used to calculate Pcompensation LNCEL; -30..33dBm; 1dBm; -
Pcomp Pcompens ensati ation on = max( max(P_MAX_OWN_CELL P_MAX_OWN_CELL – – PUMAX, PUMAX, 0)
S – Cr Crite iteri rion on Pa Para rame mete terr
Parameter QRxLevMin QRxL QRxLevM evMin in #$$s #$$set et PEMAX
Huawei
Nokia
EID
ZTE
Parameter Name
Parameter Name
Parameter Name
Parameter Name
Recommended Value
[CellSel] QRxLevMin
[LNCEL] qrxlevmin
[EUtranCellFDD] qRxLevMin
[EUtranReselection] selQrxLevMin
-12 !"m
[EUtr [EUtran anCe Cell llFD FDD] D] qRxL qRxLevM evMin in#$ #$$s $set et
[EUt [EUtra ranR nRes esel elec ecti tion on]] qrxL qrxLevM evMin in#$ #$st st
% !"
[EUtranCellFDD] [EUtranCellFDD] &MaxServin'Cell
[EUtranReselection] intraPmax
23 dm
[Cel [CellS lSel el]] QRxL QRxLev evMin Min#$ #$$s $set et [LNCE [LNCEL] L] qRxL qRxLev evMin Min#$ #$$s $set et [CellResel] PMax
[LNCEL] pMaxOwnCell
Cell Reselection
Nokia Parameter Objects Structure for Reselection LNBTS
Reselecti Reselection on has differen differentt parameter for different neighbor type: - Intra Frequency LTE - Inter Frequency LTE - UTRAN - GERAN - CDMA2000
LNCEL IAFIM CDFIM IRFIM GFIM UFFIM GNFL IAFIM = Intra Frequency Idle Mode IRFIM = Inter Frequency Idle Mode UFFIM = UTRAN FDD Idle Mode GFIM = GERAN Frequency Idle Mode GNFL = GERAN Neighbor Frequency List CDFIM = CDMA2000 Frequency Idle Mode
Reselection Process Overview Measurements trigger
UE is measuring measuring the neighbor neighbor cells only only when the RSRP signal level is below some threshold threshold.. The measurements trigger is based primarily on absolute priorities. In case of equal priority additional thresholds are defined
Evaluate cell reselection criteria “R”
For the reselection there are different cases depending on priorites of the neighbour frequency Layers (for inter-frequency and inter-RAT)
Execute cell reselection
Priority Layer Concept in LTE • • •
Cell reselection between different LTE frequencies and different RATs is based on priorities Priorities could be configured for each LTE frequency (including serving cell) and for each frequency of each RAT Priorities are provided to UE via system information
• eU!RAN " #$3% #$&% #$'% #$'% #$(% #$(% #$) #$) • U!RAN" #$*+ • ,ERAN" #$2-.ater
RAT_4 f_2
RAT_3 f_1
• •
Equal priorities are not applicable for inter-RAT cell reselection UE performs only cell reselection evaluation for inter-LTE frequency and inter-RAT carriers for which the UE has a priority
• •
The range of absolute priorities is 0..7 (0 is the lowest priority ) Priorities can also be signaled directly within RRC connection release message; RRC Timers control control validity validity of prio prio informati information on • eUTRAN: T320; UTRAN: T322; GERAN: T3230 LNCEL: cellReSelPrio
Absolute priority of the serving cell
IRFIM: eutCelResPrio
Absolute priority of EUTRA carrier frequency
UFFIM: uCelResPrio
Absolute priority of the UTRA carrier frequency
GNFL: gCelResPrio
Absolute priority of the GERAN carrier frequency f requency
RAT_2 f_2
RAT_2 f_1
RAT_1 f_2
RAT_ RA T_1 1 f_ f_1 1
Measurements Measure ments Trigge riggerr - Intra Frequ Frequency ency • When to trigger the measurements of neighbor cells? • UE is not continuously measuring neighbor cells in search of a better cell to camp on • UE only performs intra frequency measurements when: when :
Intra Intra - Freque Frequency ncy::
sIntrasearch LNCEL; 0..62dB; 2dB; -
Srx Srxlev lev <= Sintrasearch
qrxlevmin Minimum required RSRP level
→ Qrxlevmeas ≤
+ Sintrasearch Qrxlevmin + Qrxlevmin
LNCEL; -140…-44dBm; 2dBm; -
(assuming that qRxLevMinOffset qRxLevMinOffset is is not used)
s$ntrasear s$ntrasearc/ c/ 0roadcas 0roadcasted ted on #$3
Reselection Intra Frequency Start Measurement Parameter
Category #election 1# Crite Criteria ria
Re#election #tart Meas.rement
Huawei
Nokia
EID
Parameter Name
Parameter Name
Parameter Name
QRxLevMin
[CellSel] QRxLevMin
[LNCEL] qrxlevmin
[EUtranCellFDD] qRxLevMin
QRxLevMin Offset
[CellSel] QRxLevMinOffset
[LNCEL] qRxLevMinOffset
P E MA X
[CellResel] PMax
[LNCEL] pMaxOwnCell
[EUtranCellFDD] qRxLevMinOffset [EUtranCellFDD] pMaxServingCell
[CellResel] SIntraSearch
[LNCEL] sIntrasearch
[SIB3] sI sIntraSearch
Parameter
sIntraSearch
ZTE
Parameter Name [EUtranReselection] selQrxLevMin [EUtranReselection] qrxLevMinOfst
Recommended Value -124 dBm 0 dB
[EUtranReselection] intraPmax
23 dBm
[EUtranReselection] sIntraSearch
62 dB
Measurements Measure ments Trigge Triggerr – InterInter-freque frequency ncy and Inter-RA Inter-RAT (1/2) • In the case of inter-frequency and inter-RAT reselection the measurements trigger depends primarily on the absolute priorities of the serving & non-serving layer • UE should always measure higher priority layers • Therefore UE searches for higher priority layers at least once every (60xNlayers) seconds • Nlayers is the total number of higher higher priorities priorities LTE and and 3G layers layers • Nlayers is increased by 1 if there is one or more more groups of GSM frequencies frequencies with higher higher priority. priority.
IF cellReSelPrio(inter-f or inter-RAT) > cellReSelPrio(serving) cellReSelPrio(serving) THEN the measurements of the neighbor cell are mandatory IF cellReSelPrio(inter-f or inter-RAT) <= cellReSelPrio(serving) cellReSelPrio(serving) THEN the measurements are performed when RSRP of the serving cell is below some threshold: Srx Srxlev lev <= Snonintrasearch sNonIntrsearch Qrxlevmin + + Snonintrasearch → Qrxlevmeas ≤ Qrxlevmin (assuming that qRxLevMinOffset qRxLevMinOffset is is not used)
LNCEL; 0..62dB; 2dB; -
Measurements Measure ments Trigge Triggerr – InterInter-freque frequency ncy and Inter-RA Inter-RAT (1/2)
sNonIntrsearch
sNon$ntras sNon$ntrasearc earc/ / 0roadcas 0roadcasted ted on
Reselection Inter Reselection Inter Freq & Inter RA RAT T Start Measurem Measurement ent Parameter Category
#election 1# Crite Criteria ria
Parameter QRxLevMin QRxLevMin #$$set
PEMAX s$ntra#earc/ Re#election #tart Meas.rement
sNon$ntra#earc/
Huawei Parameter Name
Nokia Parameter Name
EID Parameter Name
[CellSel] QRxLevMin
[LNCEL] qrxlevmin
[EUtranCellFDD] qRxLevMin
[CellSel] QRxLevMin#$$set
[LNCEL] qRxLevMin#$$set
[CellResel] PMax [CellResel] #$ntra#earc/ [CellResel] #Non$ntra#earc/
[EUtranCellFDD] qRxLevMin#$$set
[LNCEL] pMaxOwnCell
[EUtranCellFDD] &MaxServin'Cell
[LNCEL] s$ntrasearc/
[S(")] s(ntraSearc* [EUtranCellFDD]
[LNCEL] sNon$ntrsearc/ s+stem(n$ormation"loc,)sNon( ntraSearc*
ZTE Parameter Name [EUtranReselection] selQrxLevMin [EUtranReselection] qrxLevMin#$st
[EUtranReselection] intraPmax [EUtranReselection] s$ntra#earc/ [EUtranReselection] snonintrasearc/
Default Value -12 !"m % !"
23 dm '2 d *4 1**5 dm
Reselection Process Overview Measurements trigger
UE is measuring the neighbor cells only when the RSRP signal level level is below some threshold. The measurements trigger is based primarily on absolute priorities. In case of equal priority additional thresholds are defined
Evaluate cell reselection criteria “R”
For the reselection there are different cases depending on priorites of the neighbour frequency Layers (for inter-frequency and inter-RAT)
Execute cell reselection
R Cri Criteri terion on – Cel Celll Res Reselec electio tion n Intra-frequency Case (1/2) •
Once the measurements for neighbor cells have been triggered the UE will rank the measured cells cells which which fulfill fulfill the the S- Criteri Criterion on accordi according ng to the the R- Criter Criterion ion qHyst • Cell ranking criterion: LNCEL; 0dB (0),…,24dB (15); Rs = Qmeas,s + Qhyst,s qOffsetCell Rn = Qm Qmea eas, s,n n – Qoffset,n IAFIM; IAFIM; -24 dB (0),…,24 (0),…,24 dB (30); (30); - ; 0 dB(15)
Rn > Rs ⇒“cell reselection“ tReselEutr LNCEL; 0…7s; 1s; -
Where: Qm Qmea eas, s,s s & Qm Qmea eas, s,n n = RS RSRP RP
• The UE shall reselect the new cell, if the following following conditions are met: • 1. The new cell is better ranked than the serving cell during a time interval tReselection • 2. More than 1 second has elapsed since the UE has camped on the current serving cell Note:
R Cri Criteri terion on – Cel Celll Res Reselec electio tion n Intra-frequency Case (2/2) Rs = Qmeas,s + Qhysts Rn = Qmeas,n - Qoff offset sets,n s a e m
Rn > Rs => „cell reselection“
qHyst
Q
Qmeas,n
LNCEL; 0dB (0)… 24dB (15); -
Rn
Qmeas,s Qhysts
qOffsetCell IAFIM; -24 -24 dB (0)… (0)… 24 dB (30); (30); - ; 0 dB(15)
Rs Qoffsets,n Treselection tReselEutr
R – Cri Criter terion ion Int Intra ra Freq Frequen uency cy Parame Parameter ter Huawei
Nokia
EID
ZTE
Parameter Name
Parameter Name
Parameter Name
[CellSel] QRxLevMin
[LNCEL] qrxlevmin
[EUtranCellFDD] qRxLevMin
[CellSel] QRxLevMin#$$set
[LNCEL] qRxLevMin#$$set
Parameter Name [EUtranReselection] selQrxLevMin [EUtranReselection] qrxLevMin#$st
[CellResel] PMax
[LNCEL] pMaxOwnCell
[CellResel] #$ntra#earc/
[LNCEL] s$ntrasearc/
sNon$ntra#earc/
[CellResel] #Non$ntra#earc/
-78st
Category #election 1# Criter Criteria ia
Parameter QRxLevMin QRxLevMin #$$set
PEMAX s$ntra#earc/ Re#election #tart Meas.rement
Re#election RCriteria -O::set Cell $ntra 6retReselect E.tran
[EUtranCellFDD] qRxLevMin#$$set [EUtranCellFDD] &MaxServin'Cell
Default Value -12 !"m % !"
[EUtranReselection] intraPmax
23 d dm
[S(")] s(ntraSearc*
[EUtranReselection] s$ntra#earc/
'2 d
[LNCEL] sNon$ntrsearc/
[EUtranCellFDD] s+stem(n$ormation"loc,)sNon( ntraSearc*
[EUtranReselection] snonintrasearc/
*4 1**5 dm
[CellResel] 9/8st
[LNCEL] -78st
[#$3] -78st
[EUtranReselection] -/8st
5 d
[E.tran$ntra6re-NCell] Cell9o::set
[$A6$M] -O::setCell
[EUtranCellRelation] -O::setCellEUtran
[EUtranRelation] -o:#tCell
4 d
[CellResel] !ReselE.tran
[LNCEL] tReselE.tr
[EUtran6re-Relation] tReselectionE.tra
[EUtranReselection] tReselection$ntraEU!RA
2s
R Cri Criteri terion on – Cel Celll Res Reselec electio tion n Inter-frequency Equal Priority Case • Similar to intra-frequency case • An additional frequency offset to control the reselection is introduced: introduced : LTE f2 Rs = Qmeas,s + Qhyst Rn = Qmeas,n – Qoffset Rn > Rs ⇒“cell reselection“ offset = 0 dB LTE f1
• Where:
Qmeas,s & Qmeas,n = RSRP Qoffset = qOffCell,n + Qoffsetfrequency qOffCell Cell specific offset IRFIM; -24..24; 1; - dB
qOffFrq Frequency specific offset for equal priority EUTRAN frequencies IRFIM; -24..24; 2; 0 dB
LTE f2 offset = -2 dB LTE f1
R Cri Criteri terion on – Cel Celll Res Reselec electio tion n Reselection Reselec tion to a Higher Higher Priorit Priority y LTE LTE frequency frequency • The reselection to a higher absolute priority LTE layer is performed if: SnonServingCell > Threshx,high
• Where:
interFrqThrH Threshx,high IRFIM; 0..62dB; 2dB; -
SnonServi SnonServingCel ngCelll = Qrxlevm Qrxlevmeas eas – Qrxlevm Qrxlevmin in - Pcompensa Pcompensation tion qRxLevMinInterF Min. coverage criteria
• Qrxlevmeas = RSRP of the LTE frequency layer IRFIM;-140..-44dBm; 2dB; • Qrxlevmin specified by the parameter qRxLevMinInterF Qrxlevmeas(nonServingCell) ell) → Qrxlevmeas(nonServingC
> qRxLevMinInterF qRxLevMinInterF + + interFrqThrH
(Assuming Pcompensation = 0)
• The criteria above must be satisfied for a time period equal to Treselection
interTResEut Reselection timer IRFIM; 0..7s; 1s; -
R Cri Criteri terion on – Cel Celll Res Reselec electio tion n Reselection Reselec tion to a Lower Lower Priorit Priority y LTE LTE frequenc frequency y • Reselection to a lower priority LTE Layer is performed if: SservingCell SservingCell < Thresoldserv Thresoldserving,low ing,low AN AND D SNonServingCell SNonServingCell > Threshx,low
interFrqThrL Threshx,low IRFIM; 0..62dB; 2dB; -
threshSrvLow
• Which means:
Thresholdserving,low LNCEL; 0..62dB; 2dB; -
Qrxlevmeas(ServingCell) → Qrxlevmeas(ServingCell)
< qRxLevMin qRxLevMin + + thresholdSrvLow
AND Qrxlevmeas(NonServingCell) Qrxlevmeas(NonServingCell) > qRxLevMinInterF qRxLevMinInterF + + interFreqThrL (assuming that qRxLevMinOffset qRxLevMinOffset is is not used and Pcompensation = 0) qrxlevmin Minimum required RSRP level LNCEL; -140…-44dBm; 2dBm; -
qRxLevMinInterF Min. coverage criteria IRFIM;-140..-44dBm; 2dB; -
Mobility States
Mobility States ? Possi0le mo0ilit8 states are" /i=/% medi.m @ normal mo0ilit8 speed UEsB UEs B ? 6or :aster mo
? UE state detection"
nCellChgHigh LNCEL; 1..16; 1; -
LNCEL; 30s (0), 60s (1), 120s (2), 180s (3), 240s (4) ; -
– $: t/e n.m0er o: 1di::erent cells cell reselections reselections d.rin= t/e past time period tEvalulation exceeds nCellChgHigh, high mobility /as 0een detectedB
– $: t/e n.m0er exceeds nCellChgMed % and not nCellChgHigh% medium mobility /as 0een detectedB – Else Normal Mobility is considered – REMAR" Mo0ilit8 co.ld 0e :.rt/er :.rt/er applied separatel8 :or :or intra% inter :re-.enc8% :re-.enc8% interRA! scenarios
B nCellChgMed LNCEL; 1..16; 1; -
Mobility States ? 6or 7i=/ @ medi.m mo0ilit8 states% cell ranDin= criteria will 0e modi:ied to consider a scalin= :actor"
qHystSfHigh LNCEL; -6 dB (0), -4 dB (1), -2 dB (2), 0 dB (3); -
? 7i=/ mo0ilit8" •
M.ltipl8 Qhyst 08 #peed #peed dependent dependent #calin=6actor #calin=6actor :or 9/8st 9/8st :or /i=/ /i=/ mo0ilit8 stateF (qHystSfHigh qHystSfHigh))
•
M.ltipl8 tReselection 08 #peed dependent dependent #calin=6actor #calin=6actor :or !reselectionRA! !reselectionRA! :or /i=/ mo0ilit8 state :or RA! cellsB 1RA! G EU!RAN% U!RAN% ,ERANB (celResTiFHM celResTiFHM))
celResTiFHM
qHystSfMed
?Medi.m mo0ilit8"
LNCEL; -6 dB (0), -4 dB (1), -2 dB (2), 0 dB (3); -
LNCEL; 0.25 (0), 0.5 (1), 0.75 (2), 1 (3); -
•
M.ltipl8 Qhyst 08 #peed dependent dependent #calin=6actor #calin=6actor :or 9/8st :or medi.m mo0ilit8 stateF (qHystSfMed qHystSfMed))
•
M.ltipl8 tReselection 08 #peed dependent dependent #calin=6actor #calin=6actor :or !reselectionRA! !reselectionRA! :or medi.m mo0ilit8 state :or RA! cellsB 1RA! G EU!RAN% U!RAN% ,ERANB (celResTiFMM celResTiFMM))
celResTiFMM LNCEL; 0.25 (0), 0.5 (1), 0.75 (2), 1 (3); -
Intra LTE LTE Mobi Mobilility ty Intra Frequency Mobility Inter Frequency Mobility
Idle Mode Mobility LTE Intra-Frequency (1/4) •
Broadcast of SIB 4 is optional optional – no need to broadcast broadcast any intraintrafrequency neighbor cells – UE is able to complete cell re-selection with SIB3 information
•
eUTRAN SIB4 informs about LTE idle mode neighbors – Physical Cell Identifier (PCI) of neighbor cell can be broadcast – cell (neighbor) individual re-select offset can be broadcast
•
SIB4 also informs about blacklisted blacklisted cells cells (BC) – A UE is not allowed to re-select a blacklisted cell blacklisted cell – Up to 16 groups of cells (PCIs) can be blacklisted – UE will not measure BC cells in connected mode •
UE will never be instructed from eNB to handover to a blacklisted cell
physCellIdNcl PCI is a unique cell identification identif ication in a neighboring cell list
qOffsetCell
Idle Mode Mobility LTE Intra-Frequency (2/4) Black Listed Cells –> the feature prohibit UE to camp on group of cells
– UE shall not consider Black Listed Cells to camp on – Operator can control Black Cell List – Range of blacklisted cells must be consecutive – Range can be defined with parameter IAFIM: rangeIntraPci – Start of range can be defined with parameter p arameter IAFIM: startIntraPci – PCI is Physical Cell Identifier Black Cell List startIntraPci rangeIntraPci IAFIM; n4 (0), n8 (1), n12 (2), n16 (3), n24 (4), n32 (5), n48 (6), n64 (7), n84 (8), n96 (9), n128 (10), n168 (11), n252 (12), n504 (13), Not Used (14) ;;-
IAFIM; 0…503; 1; -
startIntraPci
rangeIntraPci
Idle Mode Mobility LTE Intra-Frequency (3/4) SIB 4 Parameter structure of IAFIM Object: – IAFIMId Identifies IAFIM managed object – intrFrBCList (structure: 2 parameters) rangeIntraPCI Indicates the number of PCIs in the range startIntraPCI Indicates the lowest PCI in the range
– intrFrNCList
x 16 Black Cell List
(structure: 2 parameters) x 16 physCellIdNcl The Physical Cell Identifier is a unique cell identification in a Neighboring Cell List qOffsetCell The parameter defines a cell-specific offset (in dB) that is used in in the cell cell reselectio reselection n procedure procedure.. IAFIM = Intra Frequency Idle Mode Parameters
Idle Mode Mobility LTE Intra-Frequency (4/4) Neigh Neighbor bor cell cell list list – copy copy from from eNB eNB SCF file
8 PC PCIs Is are are blac blackli kliste sted d
1 regular intra-frequency neighbors defined
Idle Mode Mobility LTE Inter-Frequency (1/2) SIB5 IRFIM Object Parameters • irfimId 8 frequency layers could be defined • dlCarFrqEut f2 Frequency number • eutCelResPrio relative cell prio for ranking
x8
• intFrBCList (structure: 2 parameters per neighbor) – rangeInterPci – startInterPci
x 16
• intFrNCList (structure: 2 parameters per neighbor) – physCellIdNcl – qOffCell • interFrqThrH • interFrqThrL
x 16
Idle Mode Mobility LTE Intra-Frequency (2/2) SIB5 IRFIM Object Parameters
e.g. interTResEut
• interPresAntP Antenna port 1 used* • interTResEut • measBdw f2 Bandwidth • pMaxInterF • qOffFrq Frequency specific offset • qRxLevMinInterF minimum coverage criteria • tResEutSF (structure: 2 parameters) – eutResTiFHM – eutResTiFMM
E-UTRA Cell Reselection Timer IRFIM; IRFIM; 0 – 7s; 1; -
measBdw Max. allowed BW for neighbors IRFIM; 6, 15, 25, 59, 75, 100 mbw; mbw; -
pMaxInterF Pmax to be used in neighb. EUTRA cells on this frequency IRFIM; -33..33; 1; -
THANK Y!
