Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Idle Mode Reselection Priority Macro IBS S<-70dBm N>S+4dB 6 L1800 (10M) 5 L2100 (5M) L2100 (5M) 3 U2100 F2 U2100 F2 3 U2100 F1 U2100 F1 2 U900 U900 1 GSM900 GSM900 Priority Trigger Coverage Trigger Intra-freq Reselection Inter-freq/Inter-Rat Reselection (Bidirectional) Inter-freq/Inter-Rat Reselection (Unidirectional) Idle Mode Idle Mode reselection strategy: • • • • • L<->L: Intra-Freq, Inter-Freq reselection L->U: coverage based reselection LTE is preferred higher reselection priority than GSM and UMTS With the same BW, U900 has lower priority than U2100 because it has wider coverage GU->L: reselection based on priority (LTE has highest reselection priority, GSM has the lowest reselection priority) UE prefer to stay in LTE when LTE coverage exists • • Once UE detect LTE signal higher than reselection threshold, then reselect from GU to LTE L1800 has highest priority with largest bandwidth (10MHz) UE will reselect to UMTS/GSM if moves out of LTE coverage area • • UE will start to detect (UMTS U2100 F1)/(GSM 900) signal when LTE serving RSRP drop to below none-intra-freq search threshold, and trigger reselect to UMTS/GSM when LTE signal further drop to below reselection threshold and UMTS/GSM signal higher than required threshold UE will reselect to UMTS in areas that exist Huawei 3G coverage, and reselect to GSM if there is not 4G and 3G at the same time Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Idle Mode (Intra-Freq Reselection) •Intra-Frequency reselection will be triggered when UE moves toward out of the serving cell coverage area •UE will reselect to the best cell that the RSRP is better than the serving cell RSRP TReselEUTRAN Ms Mn - 70dBm ● Ms+Qhyst QRxLevMin -128dBm SIntraSearch Measurement trigger Idle, RSRP(S)<-70dBm Trigger cell reselection Reselection condition RSRP(S)<RSRP(N)-4dBm, lasts 1s Time Reselection to neighbor cell Idle Mode (Intra-Freq Reselection) Category Parameter Recommended Value QRxLevMin -64 Minimum required RX quality level (Unit:2dB) QQualMin -18 Minimum required RX level (Unit:2dBm) QRxLevMin -64 Threshold for intra freq measurements configure indicator SIntraSearchCfgInd CFG Parameter Name MO MML Command Minimum required RX level (Unit:2dBm) CellSel Intra-freq Reselection (L2L) Threshold for intra frequency measurements (Unit:0.2dBm) MOD CELLSEL Remark Minimum required RSRP of cell for UE to camp on Minimum required RSRQ of cell for UE to camp on Minimum required RSRP for the cell to become a candidate during cell reselection. Enable Intra-Freq measurement Measurement triggering threshold for IntraFrequency: SIntraSearch 29 CellResel MOD CELLRESEL Hysteresis value for ranking criteria (Unit:dB) Qhyst DB4_Q_HYST Cell reselection timer value for EUTRAN (Unit:s) TReselEutran Cell reselection priority CellReselPriority Minimum required quality level configure indicator QQualMinCfgInd 1 6 (L1800) 5 (L2100) CFG RSRP<CellResel.QRxLevMin*2+2*CellResel. SIntraSearch=-70*2+2*29=-70dBm Hysteresis (4dB) for serving cell when ranking Time threshold for EUTRAN cell reselection As plan Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix •Inter-Frequency reselection will be triggered when UE moves out of the Higher Priority frequency serving area •UE will reselect to the Higher Priority frequency once the higher priority frequency fulfill the requirement RSRP Idle Mode (Inter-Freq Reselection) EutranReselTime Ms_L1800 Mn_L2100 - 106dBm - 110dBm - 114dBm ● L2L reselection (High to Low) Measurement trigger Reselection condition RSRP(S)<-114dBm, RSRP(N)>-106dBm, lasts 1s. Reselect to L2100 neighbor cell QRxLevMin -128dBm SNonIntraSearch RSRP Idle, RSRP(S)<110dBm ThreshXLow ThreshServLow EutranReselTime Ms_L2100 Mn_L1800 L2L reselection (Low to High) - 106dBm Measurement trigger Idle, always Reselection condition RSRP(N)>-106dBm, lasts 1s. Trigger cell reselection ● Reselect to L1800 neighbor cell Time ThreshXHigh Trigger cell reselection Time Idle Mode (Inter-Freq Reselection) Category Parameter Name MO MML Command Minimum required RX level (Unit:2dBm) Threshold for non-intra freq measurements configure indicator Threshold for non-intra frequency measurements (Unit:2dBm) Inter-Freq Reselection (L2L) Parameter Recommended Value QRxLevMin -64 Minimum required RX level (Unit:2dBm) for the cell to become a candidate during cell reselection. SNonIntraSearchCfgInd CFG Enable Inter-Freq/Inter-RAT measurement SNonIntraSearch 9 ThrshServLow 7 CellResel MOD CELLRESEL Serving frequency lower priority threshold (Unit:2dBm) Remark Measurement triggering threshold for scan InterFrequency/Inter-RAT cells: RSRP<CellResel.QRxLevMin*2+2*CellResel.SNonIntraSe arch=-64*2+2*9=-110dBm Lower priority serving cell starts reselection to InterFrequency/Inter-RAT: RSRP(S)<CellResel.QRxLevMin*2+2*CellResel.ThrshServ Low=-64*2+2*7=-114dBm The higher this value for high priority layer, the more difficult for UE to reselect out from the frequency layer. Cell reselection priority CellReselPriority 6 (L1800) 5 (L2100) Speed-dependent reselection parameter configure indicator SpeedDepReselCfgInd NOT_CFG As plan Idle Mode (Inter-Freq Reselection) Category Parameter Recommended Value Inter frequency cell resel priority configure indicator CellReselPriorityCfgInd CFG Inter frequency cell resel priority CellReselPriority 6 (L1800) 5 (L2100) Parameter Name MO MML Command Inter frequency high priority threshold (Unit:2dBm) Inter-freq Reselection (L2L) ThreshXhigh Minimum required RX level (Unit:2dBm) EUTRAN reselection time (Unit:s) ThreshXlow If this parameter is not specified or set to NOT_CFG, then UE won’t reselect to neighboring cells on the frequency As plan 11 RSRP required for a high priority inter-freq neighboring cell becomes a candidate for reselection: RSRP(N)>EUTRANINTERNFREQ .QRxLevMin*2+EUTRANINTERNFREQ.ThreshXhigh*2=128+22=-106dBm 11 Note: Ensure this is > Snonintrasearch and > A2 event (A2ThdRsrp - Hyst) to allow UE has time to look for other LTE frequency and avoid pingpong reselection. RSRP required for a low priority inter-freq neighboring cell becomes a candidate for reselection: RSRP(N)>EUTRANINTERNFREQ .QRxLevMin*2+EUTRANINTERNFREQ. ThreshXlow*2=128+22=-106dBm EutranInterNFreq MOD EUTRANINTERNFREQ Inter frequency lower priority threshold (Unit:2dBm) Remark QRxLevMin -64 EutranReselTime 1 Note: Ensure this is > Snonintrasearch and > A2 event (A2ThdRsrp - Hyst) to allow UE has time to look for other LTE frequency and avoid pingpong reselection. Minimum required RSRP for the cell to become a candidate during cell reselection Time threshold for inter-frequency cell reselection Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Idle Mode (Inter-RAT Reselection, L2U & U2L) L2U: Only when LTE RSRP < -114dBm and UMTS RSCP > -103dBm lasts for 1 second, then reselect to UMTS U2L: Once LTE RSRP > -108dBm lasts for 1 second, then reselect to LTE If different reselection priority are set for different LTE frequency, then UE will search the prioritize frequency first, if no suitable cell then search second priority frequency. Mn_3G (RSCP) Ms_LTE RSRP RSRP TReselUTRAN ● - 103dBm TResel Ms_2G/3G Mn_LTE - 110dBm - 114dBm - 108dBm ThreshXLow QRxLevMin -128dBm SNonIntraSearch ThreshServLow Trigger cell reselection Time Eqrxlevmin -128dBm Time ThdToHigh Measurement trigger Idle, RSRP≤110dBm Trigger cell reselection Reselection condition: RSRP<-114dBm, RSCP>-103dBm, lasts 1s. Reselection to UMTS Measurement trigger automatically Reselection condition RSRP>-108dBm, lasts 1s Reselection to LTE From 3GPP 25304, UE shall measure all inter-RAT layers with higher priority than serving cell, and reselect to the higher Srxlev cell on the highest priority layer. Based on this, if more than one LTE higher priority layers are set in 3G for U to L reselection, UE shall measure all LTE layers regardless they are same or different priority, and reselect to the highest layer with higher RSRP. If UE doesn’t support L2100, then it will measure L1800 only then reselect to L18. If UE support both L1800 and L2100, UE shall measure both layer. Idle Mode (Inter-RAT Reselection, L2U & U2L) Category Parameter Name Minimum required RX level (Unit:2dBm) Threshold for non-intra freq measurements configure indicator Threshold for non-intra frequency measurements (Unit:2dBm) Serving frequency lower priority threshold (Unit:2dBm) Cell System Information Switch Inter-RAT Reselection (L2U) Cell reselection timer value for UTRAN (Unit:s) Speed state scale factor configure indicator MO CellResel CellSiMap CellReselUtran MML Command Parameter Recommended Value QRxLevMin -64 Please refer pg.6 SNonIntraSearchCfgInd CFG Please refer pg.6 SNonIntraSearch 9 Please refer pg.6 ThrshServLow 7 Please refer pg.6 Sib6Switch@SiSwitch 1 If this option is deselected, reselection to UTRAN cells fail. TReselUtran 1 Time threshold for L2U cell reselection SpeedStateSfCfgInd NOT_CFG MOD CELLRESEL MOD CELLSIMAP ADD CELLRESELUTRAN Reselection priority configure indicator CellReselPriorityCfgInd CFG Cell reselection priority CellReselPriority 3 (U2100) QRxLevMin -58 ThreshXLow 6 UeInactiveTimer 20 Minimum required RX level (Unit:2dBm) UtranNFreq MOD UTRANNFREQ UTRAN lower priority threshold (Unit:2dBm) Ue inactive timer (Unit:s) Remark RrcConnStateTimer MOD RRCCONNSTATETIMER Enable cell reselection priority configuration . If reselection priority is not configured , UE won’t reselect to the 3G frequency. As plan Minimum required RSCP for the 3G cell to become a candidate during cell reselection. RSCP required for a low priority 3G neighboring cell becomes a candidate for reselection: RSCP(N)>UTRANNFREQ.QRxLevMin*2 +UTRANNFREQ.ThreshXlow*2=128+22=-106dBm Idle Mode (Inter-RAT Reselection, L2U & U2L) Category Parameter Name MO MML Command SIB Switch Absolute priority level of the serving cell Reselection delay time (Unit:s) NodeBProtclVer UCELLSIBSWITCH MOD UCELLSIBSWITCH UCELLSELRESEL MOD UCELLSELRESEL UNODEB MOD UNODEB RSRP Threshold for High-prio-freq Reselection (Unit:2dBm) Recommended Remark Value SibCfgBitMap 1 SIB19-1 3 (U2100) Spriority As plan 2 (U900) Treselections 1 1 second UNODEB R9 NodeB Protocol Version Reselect to LTE neighbor: Parameter ThdToHigh 10 Minimum Required RSRP Threshold EQrxlevmin of the E-UTRA Cell (Unit:2dBm) UCELLNFREQPRIOINFO ADD UCELLNFREQPRIOINFO -64 Inter-RAT Reselection (U2L) RNC:CELL E-UTRA Absolute Radio Frequency Channel Number Absolute Priority Level of the EUTRA Frequency Measurement Bandwidth EARFCN NPriority EMeasBW as plan RSRP(N)>UCELLNFREQPRIOINFO .EQrxlevmin*2+UCELLNFREQPRIOINFO.Thd ToHigh*2=-128+20=-108dBm Minimum required RSRP for the cell to become a candidate during cell reselection. as plan 6 (L1800) as plan 5 (L2100) D50 (L1800) as plan D25 (L2100) Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Idle Mode (Inter-RAT Reselection, L2G & G2L) L2G: Only when LTE RSRP < -114dBm and GSM RxLev > -101dBm during 1 second, then reselect to GSM Mn_2G (RxLev) Ms_LTE TResel RSRP RSRP TReselGeran ● - 101dBm G2L: Once LTE RSRP > -110dBm during 1 second, then reselect to LTE If different reselection priority are set for different LTE frequencies, then UE will search the prioritize frequency first, if no suitable cell then select second priority frequency. Ms_2G - 110dBm Mn_LTE - 114dBm - 110dBm ThreshXLow QRxLevMin -128dBm SNonIntraSearch ThreshServLow Trigger cell reselection Time to GSM EUTRANQR XLEVMIN -128dBm Time ThrEUTRANHigh Measurement trigger Idle, RSRP≤-110dBm Reselection condition RSRP<-114dBm, Rxlevel>-101dBm, lasts 1s. Reselection to GSM Measurement trigger automatically Trigger cell reselection to LTE Reselection condition RSRP>-108dBm, lasts 5s Reselection to LTE Idle Mode (Inter-RAT Reselection, L2G & G2L) Category Inter-RAT Reselection (L2G) Parameter Name MO Minimum required RX level (Unit:2dBm) Threshold for non-intra freq measurements configure indicator Threshold for non-intra frequency measurements (Unit:2dBm) Serving frequency lower priority threshold (Unit:2dBm) CellResel Cell System Information Switch CellSiMap Cell reselection timer value for GERAN (Unit:s) Speed state scale factor configure indicator CellReselGeran MML Command MOD CELLRESEL MOD CELLSIMAP Parameter Recommended Value QRxLevMin -64 Please refer pg.6 SNonIntraSearchCfgInd CFG Please refer pg.6 SNonIntraSearch 9 Please refer pg.6 ThrshServLow 7 Please refer pg.6 Sib7Switch@SiSwitch 1 If this option is deselected, reselection to GERAN cells fail. TReselGeran 1 Time threshold for L2G cell reselection SpeedStateSfCfgInd NOT_CFG ADD CELLRESELGERAN Cell reselection priority configure indicator CellReselPriorityCfgInd CFG Cell reselection priority CellReselPriority 1 QRxLevMin 0 ThreshXLow 7 Minimum required RX level (Unit:-115+2*QRxLevMin) Lower priority threshold (Unit:2dBm) Remark GeranNfreqGroup MOD GERANNFREQGROUP Enable cell reselection priority configuration . If reselection priority is not configured , UE won’t reselect to the 2G frequency. As plan Minimum required RX level for the 2G cell to become a candidate during cell reselection. Rx level required for a low priority 2G neighboring cell becomes a candidate for reselection: RSCP(N)>115+2*GUIGERANNFREQGROUP .QRxLevMin+GERANNFREQGROUP .ThreshXlow*2=-115+14=-101dBm Idle Mode (Inter-RAT Reselection, L2G & G2L) Category Parameter Name MO MML Command Parameter LTE Cell Reselection Allowed GERAN Priority GCELLHOBASIC SET GCELLHOBASIC LTECellReselEN GERANPRI Recommended Value Yes 1 UTRAN Priority UTRANPRI 4 EUTRAN Priority EUTRANPRI 6 ThrPriSearch 15 MS always searches for neighboring cells in UTRAN or EUTRAN TRESEL 0 5s Inter-RAT Search THD Based on Priority (Unit:-98dBm+ThrPriSearch*3) Cell Resel Time Hyst Based on PRI (Unit:5s+TRESEL*5) Inter-RAT Reselection GCELLPRIEUTRANSYS SET GCELLPRIEUTRANSYS (G2L) BSC:CELL EUTRAN Cell Resel High THD Based on PRI (Unit:2dB) THREUTRANHIGH 10 Min RX Level of EUTRAN Cell Based on PRI (Unit:-140dBm+EUTRANQRXLEVMIN*2) EUTRANQRXLEVMIN 6 EUTRAN Cell Search Thres. in Packet Mode QPEUTRAN 7 SPTRESEL SUPPORT Support Cell Reselection GLTENCELL ADD GLTENCELL Remark Reselect to LTE neighbor: RSRP(N)>140dBm+GCELLPRIEUTRANSYS.EUTRANQRXL EVMIN*2+GCELLPRIEUTRANSYS.THREUTRAN HIGH*2=-128+20=-108dBm Minimum required RSRP for the cell to become a candidate during cell reselection. (always), that is, the MS always searches for neighboring cells in EUTRAN. Enable cell reselection from GSM to LTE. Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Connected Mode (Handover & MLB & CSFB & Fast Return) Macro IBS L2U CSFB with blind redirection, (Co-sector only, BlindHoPriority=3) L1800 (10M) L2100 (5M) L2100 (5M) U2100 F2 U2100 F2 U2100 F1 U2100 F1 U900 U900 GSM900 GSM900 Intra-freq Reselection (Bidirectional) Coverage based Inter-freq handover (Bidirectional) Coverage based L2U PS handover & redirection (Unidirectional) REMARK: U2100 F1 is set as the fallback layer because of its continuity of coverage. L2G CSFB with blind redirection (co-sector) U2L fast return MLB based Inter-freq handover (Co-sector only, OverlapInd=YES) Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Connected Mode (Coverage Based Intra-RAT Handover) Intra-Freq HO will triggered by A3 event if UE moves within LTE Inter-Frequency HO will be triggered when UE moves out of the serving frequency coverage area, UE will HO to the best cell that fulfill the Inter-Freq HO requirement (A4 event). same frequency coverage area. Each UE typically has only one receiver, and consequently one UE can receive the signals on only one frequency at a time. Therefore, A3 event measurement results cannot reflect signal conditions in real time. So A4 event is preferred for Inter-Frequency HO. RSRP A1A2TimeToTrig A4+Hys A1+Hys Measurement trigger automatically for every 240ms, (IntraRatHoCom m.IntraFreqHoR prtInterval) Ms_F1 - 104dBm RSRP(S)<RSRP(N)-2dB, lasts 320ms ● ● (A4+Hys) > (A2-Hys) is required to avoid pingpong handover ● ● - 110dBm A2-Hys Handover condition A4TimeToTrig Mn_F2 Handover to intra-frequency neighbor cell Time A2 event Measurement trigger automatically, RSRP(S)<-110dBm, lasts 640ms A1 event A2 event HO condition RSRP(N)>-104dBm, lasts 640ms A4 event Handover to intra-frequency neighbor cell Connected Mode (Coverage Based Intra-RAT Handover) Category Intra-freq Handover Inter-freq Handover IntraFreqHoA3TrigQuan Recommended Value 1 RSRP IntraFreqHoA3Hyst 2 IntraFreqHoA3Offset 2 Parameter Name MO MML Command Parameter Handover Algo switch A3 measurement trigger quantity Intrafreq handover hysteresis (Unit:0.5dB) Intrafreq handover offset (Unit:0.5dB) Intrafreq handover time to trigger Downlink EARFCN Measurement bandwidth Inter-Freq HO trigger Event Type Handover Algo switch Handover Algo Switch Interfreq A1A2 hysteresis (Unit:0.5dB) Interfreq A1A2 time to trigger A4A5 Based Interfreq A1 RSRP Threshold A4A5 Based Interfreq A2 RSRP Threshold Interfreq handover hysteresis (Unit:0.5dB) CoverageBased Interfreq RSRP threshold Interfreq HandOver Time to Trigger InterFreq A1A2 Measurement trigger quantity ENodeBAlgoSwitch IntraRatHoComm MOD ENODEBALGOSWITCH MOD INTRARATHOCOMM IntraFreqCoverHoSwitch@HoAlgoSwitch IntraFreqHoGroup EutranInterNFreq ENodeBAlgoSwitch CellHoParaCfg InterFreqHoGroup IntraRatHoComm ADD INTRAFREQHOGROUP IntraFreqHoA3TimeToTrig DlEarfcn ADD EUTRANINTERNFREQ MeasBandWidth InterFreqHoEventType MOD ENODEBALGOSWITCH InterFreqCoverHoSwitch@HoAlgoSwitch MOD CELLHOPARACFG InterFreqCoverHoSwitch@CellHoAlgoSwitch ADD INTERFREQHOGROUP MOD INTRARATHOCOMM 320ms As plan As plan EventA4 1 1 InterFreqHoA1A2Hyst 2 InterFreqHoA1A2TimeToTrig 640ms InterFreqHoA1ThdRsrp -105 InterFreqHoA2ThdRsrp -109 InterFreqHoA4Hyst 2 InterFreqHoA4ThdRsrp -105 InterFreqHoA4TimeToTrig 640ms InterFreqHoA1A2TrigQuan RSRP Remark A3 triggering: RSRP(N)-IntraFreqHoA3Hyst >RSRP(S)+IntraFreqHoA3Offset As plan As plan Stop measurement threshold: RSRP(S)>-105dBm+1=-104dBm Start measurement: RSRP(S)<-109dBm+1=-110dBm Handover to neighbour: RSRP(N)>-105dBm+1=-104dBm Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Connected Mode (Coverage Based Inter-RAT L2U Handover) • The trigger mechanism of L->U (F1) handover triggering is similar to that of Inter-Freq HO, while the threshold are for Inter-RAT IRAT B1+Hys > (IRAT 2D event trigger) HO from UMTS to GSM to avoid immediate following HO from UMTS to GSM IRAT A1A2TimeToTrig RSRP • IRAT B1 + Hys B1TimeToTrig Ms_LTE - 110dBm (-9dB) IRAT A1 + Hys Sub procedure Triggerin g Events Stopping Events Inter-Rat measurement Event A2 Event A1 Inter-RAT handover Event B1 Procedure - 102dBm Measurement - 116dBm (-13dBm) - 122dBm (-15dBm) IRAT A2 - Hys Mn_3G Blind redirection IRAT A2 – Hys BlindHoA2ThdOffs et Time IRAT A2 event IRAT A1 event Event A2 trigger RSRP<-116dBm or RSRQ<-13dB IRAT Blind A2 event If there is best cell Blind Ho Event A2 PS Handover triggered B1 event Blind redirection trigger: Event B1 trigger ECN0>-8dB If there is no best cell RSRP<-122dBm or RSRQ<-15dB Connected Mode (Coverage Based Inter-RAT L2U Handover) Category Parameter Name MO MML Command Handover Mode switch ENodeBAlgoSwitch MOD ENODEBALGOSWITCH Handover Mode switch BlindHO A1A2 RSRP trigger threshold (Unit:dBm) CellHoParaCfg MOD CELLHOPARACFG BlindHO A1A2 RSRQ trigger threshold (Unit:0.5dB) InterRAT A1A2 hysteresis (Unit:0.5dB) Inter-RAT InterRAT A1A2 time to Handover trigger (L2U) InterRAT A1 RSRP trigger threshold (Unit:dBm) InterRAT A2 RSRP trigger InterRatHoCommGroup MOD INTERRATHOCOMMGROUP threshold (Unit:dBm) InterRAT A1 RSRQ trigger threshold (Unit:dB) InterRAT A2 RSRQ trigger threshold (Unit:dB) Recommended Value UtranPsHoSwitch@HoModeSwitch 1 UtranPsHoSwitch@HoModeSwitch 1 Parameter Remark BlindHoA1A2ThdRsrp -121 BlindHoA1A2ThdRsrq -28 InterRatHoA1A2Hyst 2 InterRatHoA1A2TimeToTrig 640ms InterRatHoA1ThdRsrp -111 Stop Measurement: RSRP(S)>-111+2*0.5=-110dBm InterRatHoA2ThdRsrp -115 Start Measurement: RSRP(S)<-115-2*0.5=-116dBm InterRatHoA1ThdRsrq -20 Stop Measurement: RSRQ(S)>-20*0.5+2*0.5=-9dB InterRatHoA2ThdRsrq -24 Start Measurement: RSRQ(S)<-24*0.5-2*0.5=-13dB Connected Mode (Coverage Based Inter-RAT L2U Handover) Category Parameter Recommended Value InterRatHoUtranB1ThdEcn0 -18 InterRatHoUtranB1Hyst 2 UTRAN time to trigger InterRatHoUtranB1TimeToTrig 640ms Utran measurement trigger quantity InterRatHoUtranB1MeasQuan ECN0 Parameter Name CoverageBased UTRAN ECN0 trigger threshold (Unit:0.5dB) UTRAN handover hysteresis (Unit:0.5dB) Inter-RAT Handover (L2U) InterRat A1A2 measurement trigger quantity Inter RAT HO Trigger Event Type MO MML Command InterRatHoUtranGroupMOD INTERRATHOUTRANGROUP InterRatHoComm MOD INTERRATHOCOMM Remark Event B1 Triggering: ECN0(N)>InterRatHoUtranB1ThdEcn0*0. 5+InterRatHoUtranB1Hyst*0.5=18*0.5+2*0.5=-8dB BOTH is to trigger measurement event A1/A2 with either RSRP or RSRQ . InterRatHoA1A2TrigQuan BOTH According to 3GPP TS 36.331, A1A2 trigger quantity could be RSRP or RSRQ. InterRatHoEventType EventB1 Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Connected Mode (L2U & L2G CSFB with Blind Redirection) Category Parameter Name CSFB (L2U & L2G Blind Redirection) Recommended Value MML Command Parameter MOD GLOBALPROCSWITCH IdleCsfbRedirectOptS witch@ProtocolMsgO ptSwitch 1 Highest priority InterRat InterRatHighestPri UTRAN Second priority InterRat CSFallBackBlindHoCfg MOD CSFALLBACKBLINDHOCFG CSFB Highest priority InterRat for Idle UE Second priority InterRat Highest Priority InterRAT Second Priority InterRAT CSFB Highest Priority CellOpHoCfg ADD CELLOPHOCFG InterRAT for Idle UE CSFB Second Priority InterRAT for Idle UE Frequency Priority for UtranNFreq MOD UTRANNFREQ Connected Mode Blind handover priority UtranNCell MOD UTRANNCELL Frequency Priority for GeranNfreqGroup MOD GERANNFREQGROUP Connected Mode Blind handover priority GeranNcell MOD GERANNCELL InterRatSecondPri GERAN IdleCsfbHighestPri UTRAN IdleCsfbSecondPri InterRatHighestPri InterRatSecondPri GERAN UTRAN GERAN IdleCsfbHighestPri UTRAN IdleCsfbSecondPri GERAN ConnFreqPriority 3 BlindHoPriority 3 ConnFreqPriority 3 BlindHoPriority 3 Protocol Message Optimization Switch MO GlobalProcSwitch Remark To shorten the CSFB delay by skipping an RRC connection reconfiguration procedure during blind redirection for CSFB UTRAN is highest priority for CSFB. For GL UE, it will be CSFB to GERAN Co-sector only Co-sector only Connected Mode (L2U & L2G CSFB with Blind Redirection) Category Parameter Recommended Value Remark UtranCsfbSwitch@HoAlgoSwitch 1 Handover Algo switch GeranCsfbSwitch@HoAlgoSwitch 1 ENodeBAlgoSwitch MOD ENODEBALGOSWITCH UtranRedirectSwitch@HoModeSwitch 1 Handover Mode GeranRedirectSwitch@HoModeSwitch 1 switch CSFB BlindHoSwitch@HoModeSwitch 1 (L2U & L2G Handover Allowed UtranCsfbSwitch@HoAllowedSwitch 1 Enable blind CellAlgoSwitch MOD CELLALGOSWITCH Blind Switch GeranCsfbSwitch@HoAllowedSwitch 1 redirection for CSFB Redirection) UtranRedirectSwitch@HoModeSwitch 1 Handover Mode CellHoParaCfg MOD CELLHOPARACFG GeranRedirectSwitch@HoModeSwitch 1 switch BlindHoSwitch@HoModeSwitch 1 CSFB handover policy CsfbHoPolicyCfg REDIRECTION, CCO_HO, PS_HO REDIRECTION-1&CCO_HO-0&PS_HO-0 MOD CSFALLBACKPOLICYCFG Configuration IdleModeCsfbHoPolicyCfg REDIRECTION, CCO_HO, PS_HO REDIRECTION-1&CCO_HO-0&PS_HO-0 Category L2G CSFB BSC:CELL Parameter Name Parameter Name MO MO MML Command MML Command Parameter Recommended Value CSFB Support GCELLSOFT SET GCELLSOFT SUPPORTCSFB SUPPORT Remark Enable L2G CSFB Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Connected Mode (U2L & G2L Fast Return) Category Parameter Name MO MML Command HandOver UCORRMALGOSWIT SET UCORRMALGOSWITCH Switch CH U2L Fast Return RNC:RNC Performance Enhancement Switch 3 UCORRMPARA U2L Fast Fast Return To Return UCELLHOCOMM LTE Switch RNC:CELL SET UCORRMPARA Parameter Recommended Value HoSwitch HO_UMTS_TO_ UE can fast return to the LTE network after its RRC connection is LTE_FAST_RETU released in the UMTS network RN_SWITCH-1 Remark PERFENH_PS_F Enable RNC releases the RRC connection when a CS fallback UE keeps a PerfEnhanceSwitch3 AST_RETURN_L PS connection after terminating a call. TE_SWITCH-1 HO_UMTS_TO_ UE can fast return to the LTE network after its RRC connection is LTE_FAST_RETU released in the UMTS network RN_SWITCH-1 ADD UCELLHOCOMM FastReturnToLTESwitch PERFENH_PS_F Enable RNC releases the RRC connection when a CS fallback UE keeps a AST_RETURN_L PS connection after terminating a call. TE_SWITCH-1 Connected Mode (U2L & G2L Fast Return) Category Parameter Name MO MML Command Parameter Recommended Value L2U CSFB BSC:CELL CSFB Support GCELLSOFT SET GCELLSOFT SUPPORTCSFB SUPPORT HandOver Switch U2L Fast Return RNC:RNC U2L Fast Return RNC:CELL Performance Enhancement Switch 3 UCORRMPARA Fast Return To LTE Switch UCELLHOCOMM Fast Return To LTE Switch HO_UMTS_TO_ UE can fast return to the LTE network after its RRC HoSwitch LTE_FAST_RET connection is released in the UMTS network URN_SWITCH-1 PERFENH_PS_F Enable RNC releases the RRC connection when a CS fallback SET UCORRMPARA PerfEnhanceSwitch3 AST_RETURN_L UE keeps a PS connection after terminating a call. TE_SWITCH-1 HO_UMTS_TO_ UE can fast return to the LTE network after its RRC FastReturnToLTESwitch LTE_FAST_RET connection is released in the UMTS network URN_SWITCH-1 ADD UCELLHOCOMM PERFENH_PS_F Enable RNC releases the RRC connection when a CS fallback FastReturnToLTESwitch AST_RETURN_L UE keeps a PS connection after terminating a call. TE_SWITCH-1 Cell CI Track area code EARFCN Physical Cell ID Support Rapid Reselection Enable L2G CSFB SET UCORRMALGOSWITCH UCORRMALGOSWITCH Support Measurement-based GCELLPRIEUTRANSYS SET GCELLPRIEUTRANSYS FASTRETURNMEASSPT Fast LTE Reselect G2L Blind Fast Return BSC:CELL Remark GEXTLTECELL GLTENCELL ADD GEXTLTECELL ADD GLTENCELL OFF Blind fast return (save 10s compare with measurement), co-sector only CI As plan Eutran CellId consists of a 20-bit eNodeBID and an 8-bit CellID (EutranCellId = eNodeBID x 256 + CellID) TAC FREQ PCI As plan As plan SPTRAPIDSEL SUPPORT Enable quick G2L reselection. Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix Connected Mode (Inter-Freq MLB) Category Parameter Name MO MML Command Intra-eNodeB HO Static Switch GlobalProcSwitch MOD GLOBALPROCSWITCH MLB Algorithm Switch Inter Frequency Idle MLB Mode Mobility Load Balancing Trigger Mode Inter-frequency Mobility Load Balancing UE Number Threshold Inter-Freq Idle MLB UE Number Threshold Inter-Freq MLB Mobility Load Balancing UE Number Offset (Co-sector only) Ue Number Difference Threshold InterFreq MLB Transfer Type Inter-frequency Load Evaluate Period Idle MLB UE Number Difference Threshold Mlb Ho Cell select Strategy Parameter IntraEnodebHoStaticSw ENodeBAlgoSwitch MOD ENODEBALGOSWITCH INTER_FREQ_IDLE_MLB_SWITCH@MlbAlgoSwitch eNodeBMlb MOD ENODEBMLB 1 MlbTriggerMode UE_NUMBER_ONLY InterFreqIdleMlbUeNumThd MOD CELLMLB 1 ADAPTIVE_PROPORTION@InterFreqIdleMlbMode InterFreqMlbUeNumThd CellMLB Recommended Value ON 100 (L1800) 50 (L2100) 100 (L1800) 50 (L2100) MlbUeNumOffset 15 UeNumDiffThd 15 SynchronizedUE@InterFreqUeTrsfType 1 IdleUE@InterFreqUeTrsfType 1 InterFreqLoadEvalPrd 15 IdleMlbUeNumDiffThd 15 MlbHoCellSelectStrategy ONLY_STRONGEST_CELL Remark Connected Mode (Inter-Freq MLB) Category Parameter Name Load balancing algorithm switch MO CellAlgoSwitch MML Command MOD CELLALGOSWITCH InterFreqMlbSwitch@MlbAlgoSwitch Recommended Value 1 InterFreqBlindMlbSwitch@MlbAlgoSwitch 0 InterFreqIdleMlbSwitch@MlbAlgoSwitch 1 Parameter Enhanced MLB SpectralEffBasedLoadEvalSw@EnhancedMlbAlgoSwitch Algorithm DediPrioManageOnLowLoadSw@EnhancedMlbAlgoSwitch Switch Inter-Freq MLB (Co-sector only) Mobility Load Balancing EutranInterNFreq MOD EUTRANINTERNFREQ MlbTargetInd Target Indicator Overlap EutranInterFreqNCell MOD EUTRANINTERFREQNCELL OverlapInd Indicator Timer320 for RrcConnStateTimer MOD RRCCONNSTATETIMER T320ForLoadBalance load balance Remark 1 1 ALLOWED YES min10 Co-sector only Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 4T4R 4 Appendix 4T4R DL 4x4 MIMO: This feature configures four antenna ports for both eNodeBs and UEs for downlink transmission and adaptively selects transmit diversity or spatial multiplexing for each UE to increase downlink throughput and improve coverage performance. Compared with 2x2 MIMO and 4x2 MIMO, this feature doubles the downlink peak rate, raises downlink throughput, improves coverage performance, and provides better user experience. DL 4x2 MIMO: This feature configures four antenna ports for downlink transmission and adaptively selects transmit diversity or spatial multiplexing for each UE to increase downlink throughput and improve coverage performance. 4x2 MIMO differs from 2x2 MIMO in the following aspects: • Transmits additional reference signals over antenna ports 2 and 3. • Performs frequency switched transmit diversity (FSTD) in addition to space frequency block coding (SFBC). • Uses a separate codebook that contains 16 precoding matrixes for closed-loop MIMO. 4T4R Category 4T4R Parameter Name MIMO Adaptive Switch Initial Mimo Type DL schedule switch DL schedule switch maximum number of MIMO layers Reference signal power PB Reduce RBLER switch Compatibility Control Switch CQI Period Adaptive Switch Handover Aperiodic CQI Config Switch SimulAckNackAndC QI Config Switch MO MML Command Parameter Recommended Value CellMimoParaCfg MOD CELLMIMOPARACFG MimoAdaptiveSwitch CL_ADAPTIVE CellMimoParaCfg CellAlgoSwitch CellAlgoSwitch MOD CELLMIMOPARACFG MOD CELLALGOSWITCH MOD CELLALGOSWITCH InitialMimoType FreqSelSwitch@DlSchSwitch AperiodicCqiTrigOptSwitch@DlSchSwitch ADAPTIVE OFF ON CellDlschAlgo MOD CELLDLSCHALGO MaxMimoRankPara SW_MAX_SM_RANK_4 PDSCHCfg MOD PDSCHCFG ReferenceSignalPwr 182 PDSCHCfg MOD PDSCHCFG Pb 0 eNBCellRsvdPara MOD ENBCELLRSVDPARA RsvdSwPara3_bit6@RsvdSwPara3 ON ENodeBAlgoSwitch MOD ENODEBALGOSWITCH Tm3Tm4Max4LayerCtrlSwitch@Compatibility CtrlSwitch ON CellCqiAdaptiveCfg MOD CELLCQIADAPTIVECFG CqiPeriodAdaptive ON CellCqiAdaptiveCfg MOD CELLCQIADAPTIVECFG HoAperiodicCqiCfgSwitch ON CellCqiAdaptiveCfg MOD CELLCQIADAPTIVECFG SimulAckNackAndCqiSwitch ON Top UE avoidance ENodeBAlgoSwitch MOD ENODEBALGOSWITCH ApCqiAndAckAbnCtrlSwitch ON Remark For the UE which only support aperiodic CQI reports in 3-1 reporting mode and ACKs/NACKs are transmitted simultaneously. Contents 1 Idle Mode Intra-Freq Reselection Inter-Freq Reselection Inter-RAT Reselection, L2U & U2L Inter-RAT Reselection, L2G & G2L 2 Connected Mode Coverage Based Intra-RAT Handover Coverage Based Inter-RAT L2U Handover L2U & L2G CSFB with Blind Redirection U2L & G2L Fast Return Inter-Freq MLB 3 Appendix Appendix Major Network Elements and version NE name NE version LTE eNodeB eRAN11.1 UMTS RNC RAN17 GSM BSC RAN17 Parameter List & Planning EP Appendix Scope Parameter Range PCI 0 ~ 503 RSI 0 ~ 837 TAC 0 ~ 65535 eNodeB Name 1 ~ 64 characters eNodeB ID 0 ~ 1048575 Cell Name 1 ~ 99 characters Cell ID ID NO. of 0 ~ 255 Remark Appendix PCI & RSI Planning (0 ~ 503) Total PCIs PCI Groups Total PCIs PCI Range Current Usage Macro IBS Reserved 5% Macro 450 0 to 449 0 to 404 IBS 30 450 to 479 450 to 479 Reserved 24 480 to 503 - 6% 89% Appendix RSI Planning (0 ~ 837) Radius Macro:8000m IBS: 2000m Total RSIs Macro RSI Group RSI Range Current range Macro 0 to 727 0 to 685 IBS 728 to 777 728-776 Reserved 778 to 837 - 6% IBS Reserved 7% 87% Appendix TAC Planning (0 ~ 65535) Digit 5 Digit 4 Digit 3 Digit 2 Digit 1 1. 5th Digit represent technology like 2 for GSM, 3 for UTRAN, 4 for LTE 2. 4th & 3rd Digit represent Place 3. 2nd & 1st Digit represent TAC NO. Example 4 0 LTE 0 0 Yangon 1 TAC NO. Region Code Yangon 00~02 Ayeyarwady 03 Bago East 04 Naypyitaw 05 Shan South 06 Mon 07 Thanintharyi 08 Rakhine 09 Bago West 10 Kayin 11 Shan East 12 Kayah 13 Appendix TAC-LAC Mapping Principle In LTE, the core network paging is based on the TAL,2G/3G is based on LAC. TAL and LAC paging features roughly, So the use of TAL and LAC mapping. Currently, the core network product specifications are as follows: • A core network can plan any number of TAL, 1 TAL can accommodate 16 TAC. • 1 TAC can accommodate 30~100 eNodeB. • Taking into account the amount of signaling, paging performance and the need for future expansion, this limit is not in accordance with product specifications configuration. TAL consistent with LAC mapping using boundary XXXX LAC XXXXX TAC Appendix – TAC & LAC Mapping TAL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 LAC 351 352 353 354 355 356 357 358 359 360 451 452 551 552 651 751 781 782 783 3051 3052 3251 3351 3451 3551 3552 Site No. 142 84 76 95 51 95 128 94 62 88 79 80 151 110 325 200 128 122 92 131 95 239 50 64 153 20 40001 40006 40009 40012 40015 40017 40020 40024 40027 40029 40002 40007 40010 40013 40016 40018 40021 40025 40028 40030 40701 40705 40709 40501 40506 40702 40706 40710 40502 40507 TAC 40003 40008 40011 40014 40019 40022 40026 40004 40005 40023 40031 40703 40707 40704 40708 40503 40504 40505 Appendix eNodeB Name Macro eNodeB Name (1~64 characters) Digit 10 Digit 9 Digit 8 Digit 7 Digit 6 Digit 5 Digit 4 Digit 3 Digit 2 1. 10th Digit–Technology like G for GSM, U for UTRAN, L for LTE 2. 2nd Character for T-2100, E-1800, S-700, F-450 MHZ 3. 3rd ,4th & 5th Character – region Name Short Code like for Yangon it can be “YGN” 4. 6th ,7th , 8th, 9th & 10th character for internal id Digit 1 Note: proposed to add one more digit to identify Macro, micro, IBS, Pico. Pls suggest if need. Example L T LTE Y 2100 MHZ G N Yangon 0 0 0 0 1 Internal ID, which follows it of QROI ID Appendix Cell name & ID eNodeB Name IBS eNB name & ID LBYGN01011A 012012 LBYGN01011AA 01201211 LBYGN01011AB 01201212 … LBYGN01011 LBYGN01011BA 01201311 YGN01011B 012013 LBYGN01011BB 01201312 … Appendix eNodeB ID (Marco & IBS) eNodeB ID (0~1048575) Digit 6 Digit 5 Region Code Digit 4 Digit 3 Digit 2 Digit 1 1. 5 and 6th Digit –Present 2. 4,3,2,1 represent exiting NodeB ID Example 0 1 Region code 0 0 1 Existing NodeB ID 1 YGN AWD BGE BGW MON KYN TNY NPT SHS SHE KYH RKE 01 02 03 04 05 06 07 08 09 10 11 12 Appendix Cell Name & ID EUTRAN Cell Name (1~99 characters) eNodeB Name Digit 2 EUTRAN Cell ID ( ID NO. of 0 ~ 255) Digit 1 eNodeB ID Digit 2 Digit 1 1. First part is eNodeB name 1. First part is eNodeB ID 2. Digit 2 will be filled by character A,B,C,D…,which is represent sector ID 2. Digit 2 & 1 represent cell ID NO. 1800Mhz is planned to be 01,02,03…, 2100 Mhz is 11,12,13… 3. Digit 1 will be filled by number which is represent to carrier. 1800Mhz is planned to be 1, 2100Mhz is 2 Example Example LXYAG00001 eNodeB Name 010011 1 A Sector A Carrier 1 eNodeB ID 01 Cell 1 Appendix – RS Power Configuration RS power distribution One RB include 12 Subcarriers and 7 symbol, Time slot is 0.5ms. a). For the symbol with RS , there are 2*RS element, 2*Null element, 8 normal resource element. b). For the symbol without RS, there are 12 normal resource element What’s meaning of PAPB? PA,PB indicates power distribution between RS element and normal RE Power of RE=(PA)*(PB)*RS power Notice: Configuration of M2000 for PA, PB is GUL value, here I use (PA)&(PB) to represent physical value. Appendix – RS Power Configuration Symbols will be sent out for moment by moment, and we suppose network bandwidth is 20Mhz with 100 RBs. So, if we configure PA,PB as (-3,1) and set RS power is 18.2dBm(0.066W) a). For the symbol with RS, total power for one RB is Tot=2*RS+8*RE=2RS+8*(PA)*(PB)*RS As per relevant definition in 3GPP protocol, (PA)=1/2, (PB)=1, so Tot=2RS+8*1/2*1*RS=6*RS Now we have 100 RBs, so total power for whole bandwidth is 100*6*RS=100*6*0.066W≈40W b). For the symbol without RS, total power for whole bandwidth is Tot=100*12*RE=100*12*(PA)*(PB)*RS=100*6*RS≈40W PB physical value One Anteena port Two or Four Anteena port 0 1 5/4 1 4/5 1 2 3/5 3/4 3 2/5 1/2 PB PA physical value=10^(PA GUL value) PA,PB Bandwidth Rs power Symbol with RS power Symbol without RS power (-3,1) 10Mhz 18.2dBm 20W 20W (0,0) 10Mhz 18.2dBm 40W 40W (-3,1) 10Mhz 15.2dBm 10W 10W (0,0) 10Mhz 15.2dBm 20W 20W