tham so 3g ericsson
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Bo co th vic 2010 MC LC
LI NI U ....................................................................................................................................... 3 CHNG I GII THIU................................................................................................................... 4 CHNG II CC THAM S CELL RESELECTION V HANDOVER 3G 3G......................... 5 I. 1. a. b. c. d. e. f. g. h. 2. a. b. c. 3. a. b. c. 4. a. b. II. A. B. C. 1. a. b. c. d. e. f. g. CC THAM S CELL RESELECTION 3G .............................................................................. 5 INTRA-FREQUENCY CELL RESELECTION ...................................................................................... 5 qualMeasQuantity -Tham s o cht lng Cell Selection v Reselection ............................... 5 Tham s qQualMin ................................................................................................................. 6 Tham s qRxLevMin ............................................................................................................... 7 Tham s sIntraSearch ............................................................................................................. 7 Tham s qHyst1 ...................................................................................................................... 8 Tham s qHyst2 ...................................................................................................................... 8 Tham s qOffset1sn v qOffset2sn........................................................................................... 8 Tham s treSelection............................................................................................................... 9 INTER-FREQUENCY CELL RESELECTION ...................................................................................... 9 Tham s sInterSearch ............................................................................................................. 9 Tham s sSearchHCS............................................................................................................ 10 Tham s Inter-frequency scenarios v xut cc tham s Cell ............................................ 10 INTER-RAT CELL RESELECTION ............................................................................................... 12 Cell Reselection t WCDMA ti GSM ................................................................................... 12 Cell Reselection t GSM sang WCDMA................................................................................ 13 Tham s Inter-RAT scenarios v xut cc tham s Cell Reselection .................................. 15 CELL RESELECTION VI HCS (HIERACHICAL CELL STRUCTURE) .............................................. 16 Tham s hcsUsage ................................................................................................................ 16 Tham s sSearchHCS............................................................................................................ 16 KHI NIM HANDOVER ............................................................................................................. 17 PHN LOI HANDOVER (HO) .................................................................................................... 17 CC THAM S HANDOVER GIA 3G-3G .................................................................................... 19 INTRA-FREQUENCY HANDOVER ................................................................................................ 19 Measurement Report Transfer Mode ..................................................................................... 19 Periodical Reporting/ Event Trigger Reporting Mode ........................................................... 19 Measurement quantity - measQuantity1 ................................................................................ 20 Cell reporting quantities ....................................................................................................... 20 Intra-frequency event identity ............................................................................................... 21 Filter Coefficent.................................................................................................................... 22 Trigger condition 2 ............................................................................................................... 23
CC THAM S HANDOVER GIA 3G-3G............................................................................ 17
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Bo co th vic 2010h. i. j. k. l. m. n. o. p. q. r. s. t. u. v. w. x. y. z. aa. bb. cc. dd. 2. a. b. c. d. e. f. g. Reporting Range- reportingRange1a (Event 1a).................................................................... 23 Tham s W1a (Event 1a)....................................................................................................... 24 Report Deactivation Threshold (Event 1a) ............................................................................ 24 Reporting Amount (Event 1a)................................................................................................ 24 Reporting Interval (Event 1a)- reportingInterval1a ............................................................... 25 Hysteresis (Event 1a)- hysteresis1a....................................................................................... 25 Time to Trigger (Event 1a)- timeToTrigger1a ....................................................................... 25 Triggering condition 1 (Event 1b) ......................................................................................... 26 Reporting range (Event 1b)- reportingRange1b .................................................................... 26 W1b (Event 1b)..................................................................................................................... 27 Hysteresis (Event 1b)- hysteresis1b....................................................................................... 27 Time to Trigger (Event 1b)- timeToTrigger1b ....................................................................... 27 Replacement Activation Threshold ........................................................................................ 28 Hysteresis (Event 1c) -hysteresis1c ....................................................................................... 28 Reporting interval (Event 1C)- reportingInterval1c............................................................... 28 Timer to Trigger (Event 1c)- timeToTrigger1c ...................................................................... 29 Triggering condition 2 (Event 1e) ......................................................................................... 29 Hysteresis (Event 1e) ............................................................................................................ 30 Timer to Trigger (Event 1e) .................................................................................................. 30 Triggering Condition 1 (Event 1f) ......................................................................................... 30 Threshold used frequency (Event 1f) ..................................................................................... 31 Hysteresis (Event 1f)............................................................................................................. 32 Timer to Trigger (Event 1f) ................................................................................................... 32
INTER FREQUENCY HANDOVER............................................................................................... 33 Measurement quantity........................................................................................................... 33 Inter-frequency event identity................................................................................................ 33 Filter coefficient ................................................................................................................... 34 W used frequency (Event 2x) ................................................................................................. 34 Hysteresis (Event 2a) ............................................................................................................ 35 Time to trigger (Event 2a)..................................................................................................... 35 Threshold used/non-used frequency (Event 2b)usedFreqRelThresh4_2bEcno/nonUsedFreqThresh4_2bEcno ; usedFreqRelThresh4_2bRscp / nonUsedFreqThresh4_2bRScp.............................................................................................. 36 Time to trigger (Event 2b)- timeTrigg4_2b............................................................................ 36 Threshold used frequency (Event 2d)usedFreqThresh2dEcnoDrnc/usedFreqThresh2dRscpDrnc ................................................... 37 Time to trigger (Event 2d)- timeToTrigger2dEcno/ timeToTrigger2dRscp ............................. 37 Threshold used frequency (Event 2f)- usedFreqRelThresh2fRscp/usedFreqRelThresh2fEcno 38 Hysteresis (Event 2f)- hysteresis2f......................................................................................... 38 Time to trigger (Event 2f)- timeToTrigger2fEcno/timeToTrigger2fRscp................................. 38
h. i. j. k. l. m.
KT LUN.......................................................................................................................................... 39 CC T VIT TT............................................................................................................................ 40 TI LIU THAM KHO ................................................................................................................... 42
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Bo co th vic 2010 LI NI U
Bo co th vic ny c hon thnh sau thi gian th vic ti t Ti u, phng K Thut Khai Thc, Trung tm Thng Tin Di ng Khu vc 2, Cng ty Thng Tin Di ng (VMS). Trong thi gian th vic, ti c c hi hc hi v tm hiu v cc tham s v tuyn 3G trn h thng 3G ca Trung tm. Vi bo co ny, ti mong mun th hin c mt phn kin thc m ti tip thu c trong qu trnh th vic. Ni dung chnh ca bo co th vic ny gm 2 phn: Tm hiu cc tham s cell reselection 3G. Tm hiu cc tham s handover gia 3G 3G. Do thi gian tm hiu cn hn ch nn kh c th trnh khi nhng sai st khi tip cn v trnh by. Tuy nhin, ti hy vng trong thi gian ti cng vi s n lc phn u hc hi ca ti v s gip ca cc anh ch ti Trung tm, ti s cng c v hon thin c nhng kin thc cn thiu st ca mnh. Sau thi gian th vic Trung tm, ti nhn thy mnh ph hp vi cng vic v mi trng lm vic y. Ti hy vng c Cng ty k hp ng chnh thc c c hi c ng gp mt phn sc ca mnh vo s pht trin vng mnh ca Cng ty v Trung tm. Cui cng, ti xin gi li cm n chn thnh n anh Nguyn Bo Long, trng phng K Thut Khai Thc, anh H Quang Minh, t trng t Ti u, anh L Vnh Lng, t ph t Ti u, cng tt c cc anh ch trong phng K Thut Khai Thc nhit tnh gip ti trong qu trnh th vic v thc hin bo co ny. TPHCM, ngy 24 thng 9 nm 2010 Ngi thc hin
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Bo co th vic 2010 CHNG I GII THIUHin nay, Cng ty Thng Tin Di ng VMS l cng ty hng u trong ngnh vin thng di ng Vit Nam. Bn cnh mng di ng 2G GSM, mng di ng 3G WCDMA ang c cng ty pht trin rt mnh m vi nhiu tin ch, gi dch v mi. Do , cng tc ti u ha mng li 3G rt quan trng. Cng vic ny i hi cc chuyn vin phi nm vng quy trnh ti u, tham s v tuyn ca h thng, thit b thu pht tn hiu Trong , tham s v tuyn gp phn rt quan trng trong cht lng dch v v trong qu trnh ti u, pht trin mng li. B tham s v tuyn 3G trn h thng VMS gm cc phn sau: Tham s ch ri (reselection) Tham s chuyn giao gia 3G 3G Tham s chuyn giao gia 2G 3G Tham s phn b cng sut Tham s HSDPA Tham s HSUPA Trong qu trnh th vic ti trung tm, ti c to iu kin tm hiu, nghin cu cc tham s ch ri (reselection) v cc tham s chuyn giao gia 3G 3G. y l cc tham s ch yu, rt quan trng trong b tham s v tuyn cng nh trong cng tc ti u mng li 3G. Cc tham s ny gm c: Tham s cell reselection trong 3G: Intra-frequency cell reselection. Inter-frequency cell reselection. Inter-RAT cell reselection. Cell reselection vi HCS. Tham s chuyn giao (handover) gia 3G 3G: Intra-frequency handover. Inter-frequency handover.
ngha, chc nng v gi tr ca chng s c trnh by chi tit chng sau.
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Bo co th vic 2010 CHNG II CC THAM S CELL RESELECTION V HANDOVER 3G 3GI. Cc tham s Cell Reselection 3G
Cc tham s Cell Reselection c cu trc vo cc nhm: Intra-frequency, Interfrequency, Inter-RAT v cu trc cell phn cp (HCS). Hai b tham s SIBs (System Information Blocks) iu khin qu trnh Reselection. SIB3 v SIB4 cha cc tham s c yu cu tnh ton tin hnh qu trnh Reselection. SIB3 bao gm cc tham s Cell Reselection trong ch ri- Idle Mode v ch kt ni (khi SIB4 khng phi l broadcast). SIB4 cha cc tham s cho Cell Reselection trong ch kt ni (Connected Mode). SIB4 Indicatior trong SIB3 ch ra liu rng SIB4 c phi l broadcast trong cell hay khng? Tng t vi SIB11 v SIB12.
1. Intra-frequency Cell Reselection Di y m t thut ton Cell Reselection. tin hnh Cell Reselection, UE s nh gi 2 phng trnh sau: o Tiu chun phn mc (Rank) cho Serving Cell: Rs = Qmea,s + Qhyst,s. o Tiu chun phn mc (Rank) cho Neighbour Cell: Rn = Qmea,n Qoffset s,n
a. qualMeasQuantity -Tham s o cht lng Cell Selection v Reselection Tham s (CPICH Ec/No v CPICH RSCP) c s dng o Q, phc v vic nh mc (Rank) cc cell FDD ng c cho Cell Reselection. Gi tr ci t Khong cho php Khuyn ngh CPICH_EC_NO, CPICH_RSCP CPICH_EC_NO Tng ng CPICH_EC_NO, CPICH_RSCP CPICH_EC_NO
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Bo co th vic 2010UE s tin hnh o CPICH RSCP khi cc cell ng c c nh mc (Rank) cho qu trnh Cell Reselection. Phi tha mn phng trnh sau: Srxlev > 0 v Squal >0. Trong : Squal = Qqualmeas qQuaMmin Srxlev = Qrxlevmeas qRxLevMin Pcompensation
Squal Srxlev Qqualmeas
Gi tr cht lng select cell (dB), ch p dng cho cc cell ch FDD. Gi tr mc RX select cell (dB) Gi tr cht lng Cell c o. Cht lng ca tn hiu nhn c c biu din trong CPICH Ec/No (dB) cho cc cell FDD Gi tr mc RX Cell c o. y l tn hiu nhn c, CPICH RSCP cho cc cell FDD (dBm). Mc cht lng yu cu ti thiu trong cell (dB). Ch p dng cho cc cell FDD Mc tn hiu RX c yu cu ti thiu trong cell (dBm) Max(maxTxPowerUL P_MAX, 0) (dBm) Mc cng sut TX ln nht 1 UE c th s dng khi truy cp cell (c trong thng tin ca h thng) (dBm) Cng sut pht RF ti a ca UE (dBm)
Qrxlevmeas qQualMin qRxLevMin Pcompensation maxTxPowerUl P_MAX
b. Tham s qQualMin Mc cht lng ti thiu trong cell c biu din trong CPICH Ec/No. Nu tham s ny qu nh, UE s li cell vi cht lng thp v c th khng c kh nng nhn c dch v ng tin cy. Nu gi tr ny qu ln, UE s sm ct b Cell khng ph hp v c th la chn ti PLMN khc m khng cn thit. Nu PLMN v RAT khc khng c sn, 1 gi tr thp hn c th c la chn khi khng c mng khc vi cht lng tt hn.
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Bo co th vic 2010Gi tr ci t Khong cho php Khuyn ngh S nguyn (-24..0) -18 Tng ng -24..0 dB -18 dB
c. Tham s qRxLevMin Mc cht lng ti thiu trong cell c biu din trong CPICH RSCP. Nu tham s ny qu nh, UE s li cell vi cht lng thp v c th khng c kh nng nhn c dch v ng tin cy. Nu gi tr ny qu ln, UE s sm ct b Cell khng ph hp v c th la chn ti PLMN khc m khng cn thit. Gi tr ci t Khong cho php Khuyn ngh S nguyn (-119..-25) -115 Tng ng -119..-25 dBm, vi bc nhy l 2 dB -115 dBm
d. Tham s sIntraSearch Mc ngng (threshold lin quan ti qQualMin) cho php intra-frequency measurements. Nu gi tr ny qu nh, UE s khng tin hnh intra-frequency measurements v c th nh mt c hi tin hnh Cell Reselection ti cell khc tt hn. Nu gi tr ny qu ln UE s tin hnh intra-frequency measurements mc d rt c kh nng tiu chun reselection cho cac neighbour cell rt thp, dn ti lng ph Idle Mode hin ti v gim thi gian stand-by. Gi tr ci t Khong cho php [027] Tng ng 0: khng gi; -32...+20dB vi bc nhy 2 dB. Khuyn ngh 5 10 dB (vi qQualMin = -18 dB) 8 dB (vi qQualMin = -16 dB)
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Bo co th vic 2010e. Tham s qHyst1 Gi tr Hysteresis ny trong tiu chun nh mc (ranking) cho Cell phc v khi CPICH RSCP c s dng. Nu tham s ny qu nh, UE s tin hnh Cell Reselection ti cc cell khc ngay mp ni m tn hiu ti tt hn tn hiu t Serving Cell. Nu tham s ny qu ln, UE c th s li Serving Cell hin ti vi mc tn hiu rt thp mc d c cell khc vi mc tn hiu thc s tt hn. => Tham s ny nhm trnh hin tng ping-pong gia 2 cell. Gi tr ci t Khong cho php Khuyn ngh S nguyn (0..40) 4 Tng ng 0..40, bc nhy l 2 dB 2 dB
f. Tham s qHyst2 Gi tr Hysteresis ny trong tiu chun nh mc (ranking) cho Cell phc v khi CPICH Ec/No c s dng. Nu tham s ny qu nh, UE s tin hnh Cell Reselection ti cc cell khc ngay mp ni m tn hiu ti tt hn tn hiu t Serving Cell v c th dn ti tiu hao battery qu mc. Nu tham s ny qu ln, UE c th s li Serving Cell hin ti vi mc tn hiu rt thp mc d c cell khc vi mc tn hiu thc s tt hn. => Tham s ny nhm trnh hin tng ping-pong gia 2 cell. Gi tr ci t Khong cho php Khuyn ngh Tng ng
Khng c th, S nguyn 0..40, bc nhy l 2 dB (0..40) 4 2dB
g. Tham s qOffset1sn v qOffset2sn Gi tr Offset gia 2 cell trong tiu chun nh mc (ranking) cell cho qu trnh Cell Reselection khi CPICH RSCP c s dng (qOffset1sn) or khi CPICH Ec/No c s dng (qOffset2sn). Mt gi tr dng ca qOffset s ngn cn UE cm (camping) vo trong cell . Nu tham s ny c thit lp qu thp, c th khng ngn cm UE cm (camping) vo trong cell . Nu gi tr ny qu cao, UE s khng bao gi c xem xt cm (camping) vo trong cell .
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Bo co th vic 2010Gi tr ci t Khong cho php Khuyn ngh S nguyn (-50..50) 1 (3 nu neighbour cell thuc v location area khc, 5 nu neighbour cell thuc v RAT khc) Tng ng -50..50 dB 1 dB (3 dB nu neighbour cell thuc v location area khc, 5 dB nu neighbour cell thuc v RAT khc)
h. Tham s treSelection Gi tr nh thi Cell Reselection. Nu tham s ny qu ln, UE c th s phi trong cell tng i yu mc d tn ti cell tt hn, hoc ti t hn n c th b ngt kt ni trong trng hp neighbour cell c CPICH tng ln. Gi tr ci t Khong cho php Khuyn ngh S nguyn (0..31) 2 Tng ng 0..31 s 2s
2. Inter-frequency Cell Reselection a. Tham s sInterSearch Mc ngng (dB) cho quy tc Inter frequency measurements v HCS (Hierachical Cell Structure) measurements. Nu tham s ny qu nh, UE s khng tin hnh interfrequency measurement v c th nh mt c hi tin hnh Cell Reselection ti cell khc tt hn. Nu gi tr ny qu ln UE s tin hnh Inter-frequency measurements rt thng xuyn, hu nh dn n tin hnh Inter-frequency Reselection khng cn thit, thm ch Cell hin ti ang hot ng vi cht lng tt, do gim thi gian stand-by. Gi tr ci t Khong cho php [027] Tng ng 0: khng gi; -32...+20dB vi bc nhy 2 dB. Khuyn ngh 0 0
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Bo co th vic 2010b. Tham s sSearchHCS Mc ngng ny c s dng trong quy tc o c cho Cell Reselection. T Rel5 tr i, khi HCS khng c s dng (non HCS cell), sSearchHCS s ch r gii hn di Srxlev trong Serving Cell, im m UE bt u o c Inter-frequency neighbouring cells. Nu HCS c s dng (HCS cell), tin ch ca n l khc, s c m t mc sau. Tc dng ging nh tham s sInterSearch. Gi tr ci t Khong cho php Khuyn ngh [-105 91] -105 Tng ng -105..91dB nhy 2 dB. -105 dBm vi bc
c. Tham s Inter-frequency scenarios v xut cc tham s Cell Reselection Trong trng hp trin khai nhiu sng mang. (Hin nay VMS c cp php 3 carriers). Scenario Q-1: Hot spot overlay deployment scenario. Scenario Q-2: One-to-One overlay deployment scenario.
Hn na, Border v Core Cell c th c nh ngha cho mi trng hp. Boder cell nh ngha cc cell ti bin vng ph ca 1 sng mang, Core cell nh ngha cc Cell bn trong vng ph ca 1 sng mang. Trin khai One-to- One overlay ch bao gm cc Core Cell. Trin khai Hot-spot bao gm c Core cell v Border cell. Tn s F1 l tn s gc v tn s F2 l tn s overlay. xut cc tham s 2 bng di nhm mc ch cn bng ti v duy tr vng ph sng gia cc sng mang (carriers). Vic chuyn t F2 sang F1 c lm d dng hn cho Border Cells trnh mi nh hng. Cc tham s c th c thit lp hng UEs ti cm (camping) trn 1 cell no trong ch idle mode. iu ny c th t c bng cch thit lp Sintersearch, sSearchHCS cao trn cc carrier khng mong mun v hoc thit lp Qoffset2sn thp cho cc carrier mong mun.
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Bo co th vic 2010Tht vy, cc gi thit ny c th c p dng cho trng hp trn: K hoch ca nh khai thc dch v l y ngi s dng ti UMTS cung cp cc dch v 3G. Nu 1 mng ca nh khai thc h tr nhiu tn s, cm (camping) trn Interfrequency neighbours nn c u tin khi so snh vi inter-RAT neighbours. Tn cc tham s Vng bin (border) Frequency 1 FDD quality- measure qQualMin qRxLevMin sIntraSearch sInterSearch sSearchHCS sSearchRAT qHyst2 treSelection qOffset2sn Ec/No -18 dB -113 dBm 10 dB 8 dB 6 dB 2 dB 2 dB 1s 3 dB Frequency 2 Ec/No -16 dB -107 dBm 8 dB 6 dB 4 dB 2 dB 2 dB 1s 0 dB
Khuyn ngh tham s Inter-frequency Cell Reselection Tn cc tham s Vng li (core) Frequency 1 FDD quality- measure qQualMin qRxLevMin sIntraSearch sInterSearch sSearchHCS Ec/No -18 dB -113 dBm 10 dB 8 dB 6 dB Frequency 2 Ec/No -18 dBm -113 dBm 10 dB 8 dB 6 dB
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Bo co th vic 2010sSearchRAT qHyst2 treSelection qOffset2sn 2 dB 2 dB 1s 1 dB (same LA), 3 dB (different LA) 2 dB 2 dB 1s 1 dB (same LA), 3 dB (different LA)
3. Inter-RAT Cell Reselection Thit lp cc tham s Inter-RAT c th da trn cc trng hp trin khai mng c th v k hoch ca nh khai thc dch v. Cc tham s qQualMin, qRxLevMin, qHyst1s, qOffset1sn v Pcompensation c m t trong Intra-frequency Cell Reselection cng c p dng trong inter-RAT.
a. Cell Reselection t WCDMA ti GSM Thut ton Cell Reselection t WCDMA ti GSM nh sau: Sx= Squal = qQualmeas qQualMin Nu Sx > SsearchRAT,m UE khng cn tin hnh o c trn cc cell RAT m. Nu Sx 0 Tiu chun Cell-Ranking R c nh ngha: Rs = Qmeas,s + qHyst1s Rn = Qmeas,n qOffset1sn Tnh ton cc tham s da trn CPICH RSCP. Nu 1 cell GSM c mc rank cao nht, UE s tin hnh Cell Re-Selection ti Cell GSM .
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Bo co th vic 2010a.1 Tham s sRatSearch Mc ngng (dB) cho quy tc RAT Cell Reselection. Nu tham s ny qu nh, UE s khng tin hnh RAT Cell Reselection v c th nh mt c hi tin hnh Cell Reselection ti cell khc tt hn. Nu gi tr ny qu ln UE s tin hnh RAT Cell Reselection rt thng xuyn, hu nh dn n tin hnh GSM Reselection khng cn thit. Gi tr ci t Khong cho php Khuyn ngh [-32..+20] 4 Tng ng -32..+20dB nhy 2 dB. 4dB vi bc
a.2 Tham s sHcsRAT Khi HCS khng c s dng (non HCS cell), sHcsRAT s ch r gii hn di Srxlev trong Serving Cell, im m UE bt u o c Inter-frequency neighbouring cells. Nu HCS c s dng (HCS cell), tin ch ca n l khc, s c m t mc sau. Tc dng ging nh tham s sInterSearch Gi tr ci t Khong cho php Khuyn ngh [-10591] -105 Tng ng -105..91dB nhy 2 dB. -105 dB vi bc
b. Cell Reselection t GSM sang WCDMA Cell Reselection t GSM sang WCDMA p dng ti cc dch v CS v GPRS trong RR Idle Mode. Thut ton Cell Reselection t GSM sang UMTS (FDD) c m t nh sau: Cc cell/ frequencies UTRAN FDD c th c nm trong danh sch 3G Cell Reselection. Mng iu khin php o UE tin hnh Reselection bi cc tham s Qsearch_I (Qsearch_P cho chuyn mch gi) broadcast trn knh GSM BCCH.
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Bo co th vic 2010 So snh Qsearch_I vi RLA_C (hoc Qsearch_P vi RLA_P trong trng hp chuyn mch gi; RLA- Received Signal Level Averaged value) xc nh liu rng UE s tin hnh php o Reselection. Nu danh sch 3G Cell Reselection bao gm UTRAN FDD frequencies v php so snh trn tha mn, UE s update RLA_C (RLA_P).
UE s reselect UTRAN FDD cell ph hp nu tt c cc iu kin sau c tha mn cho 1 chu k t nht l 5s: o Ec/No o c ca UTRAN cell ngang bng hoc ln hn FDD_Qmin. o Gi tr RSCP o c ca UTRAN cell vt qu RLA_C (hoc RLA_P) ca serving GSM_cell bi FDD_Qoffset. o Gi tr RSCP o c ca UTRAN cell vt qu RLA_C (hoc RLA_P) ca tt c cc GSM_cell khc bi FDD_Qoffset. o Gi tr RSCP o c ca UTRAN cell ngang bng hoc ln hn FDD_RSCP_threshold, nu c h tr bi UE.
b.1 Tham s Qsearch_I Tham s ny ch ra liu rng php o Inter-RAT s c tin hnh khi RLA_C ca serving cell l di hay trn mc ngng. Gi tr ci t Khong cho php S nguyn [0..15] Tng ng Tm kim cc cell 3G nu mc tn hiu l di mc ngng (0..7) 0 = 98 dBm 6 = -74 dBm, 7 = oo (alaways) hoc mc ngng trn: 8 = 78 dBm, 14 = -54 dBm, 15 = oo (never) alaways
Khuyn ngh
7
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Bo co th vic 2010c. Tham s Inter-RAT scenarios v xut cc tham s Cell Reselection Scenario Q-1: Bin vng ph 3G: vng bin ca 3G PLMN. Scenario Q-2: Trong vng ph 3G: Trng hp ny bao gm 2 iu kin, vng ph 3G Outdoor l lin tc nhng: Vng ph 3G Indoor km. C nhiu l hng bn trong vng ph 3G. Cc gi nh di y c lm cho cc trng hp nh ngha trn: Vng ph 2G c xem xt lun lun c sn v tt. K hoch ca nh khai thc y ngi s dng dng cc dch v 3G cng nhiu cng tt. Inter-RAT Scenario qQualMin Cell Reselection qRxLevMin t WCDMA sIntraSearch sang GSM sInterSearch sHCSRAT sRatSearch qHyst1 treSelection qOffset1sn Vng bin -16 dB -107 dBm 8 dB 6 dB 2 dB 2 dB 2 dB 1s 5 dB Vng li -18 dB -113 dB 10 dB 8 dB 5 dB 2 dB 2 dB 1s 5 dB -104 dBm -12 dB
Cell Reselection FDD_RSCP_min -100 dBm t GSM sang FDD_Qmin -10 dB WCDMA
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Bo co th vic 20104. Cell Reselection vi HCS (Hierachical Cell Structure) HCS c tha k t GSM nhng c ng dng khc trong WCDMA. HCS c th c s dng khi WCDMA c trin khai trn nhiu tn s hoc trong cu trc chi tit hn, pico, micro cell iu khin tt hn cc mc u tin ca cc cell/layer c th. HCS cng a ra cc c ch khc m c th hu ch trong WCDMA: o iu khin t l Cell Reselection. o S dng RSCP khi khi s s lng php o Inter-frequency v/hoc interRAT.
a. Tham s hcsUsage Tham s ny ch ra liu rng Serving Cell c thuc HCS hay khng. Vic s dng HCS ch thch hp khi s dng nhiu sng mang. Gi tr ci t Khong cho php Khuyn ngh Not used, Used Not Used Tng ng Not Used hoc Used Not Used
b. Tham s sSearchHCS Tham s ny c s dng trong cc quy tc o c cho Cell Reselection khi HCS c s dng. N ch r gii hn di Srxlev trong Serving Cell im m UE s khi to php o tt c neighbour cell cho serving cell. Gi tr ci t Khong cho php Khuyn ngh [-10591] -105 Tng ng -105..91 dB, vi bc nhy 2dB -105dB
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Bo co th vic 2010II. Cc tham s handover gia 3G-3GA. Khi nim Handover Trong h thng thng tin di ng, thut ng Handover cp ti qu trnh x l khi UE di chuyn gia cc cell trong khi ang thc hin cuc gi hoc phin d liu. Mc ch ca Handover nhm duy tr tnh lin tc ca dch v, m bo cht lng kt ni, gim t l Drop Call, t l tc nghn khi UE di chuyn gia cc cell. Trong h thng WCDMA, Handover c phn loi thnh Soft Handover v Hard Handover.
B. Phn loi Handover (HO) H thng WCDMA h tr a k thut Handover, c th : Intra-system HO l qu trnh handover xy ra trong ni b h thng WCDMA bao gm: Intra-frequency HO: xy ra gia cc cell c cng sng mang WCDMA. Inter-frequency HO: xy ra gia cc cell hot ng trn cc sng mang WCDMA khc nhau. Inter-system HO l qu trnh handover din ra gia cc cell p dng cng ngh truy nhp v tuyn khc nhau hoc gia cc ch truy nhp v tuyn khc nhau, v d: Radio Access Technologies (RATs) HO: Qu trnh HO gia cng ngh WCDMA v GSM/EDGE. Radio Access Modes (RAMs): Qu trnh HO gia 2 ch truyn song cng phn chia theo theo tn s (FDD) v phn chia theo thi gian (TDD).
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Bo co th vic 2010Ngoi ra, qu trnh Handover c th c phn loi nh sau: Hard Handover: Hard HO c p dng trong trng hp suy gim cht lng dch v hoc mun iu tit lu lng. Trong sut qu trnh Hard HO tt c cc kt ni v tuyn c vi UE s c gii phng trc khi cc kt ni v tuyn mi c thit lp. Nh vy c s gin on nh trong khi ang thc hin cuc gi hoc khi ang truyn 1 phin d liu. Hard HO c th xy ra trong cc trng hp sau: Khi UE thc hin qu trnh HO ti sng mang UTRAN khc, hoc ti ch truyn song cng khc (FDD-TDD). Hoc khi qu trnh Soft-Handover khng cho php thc hin. Soft/Softer Handover: Cho php UE chuyn giao gia cc cell m khng b ngt kt ni. UE s duy tr t nht 1 kt ni v tuyn ti UTRAN. Soft Handover: Qu trnh HO xy ra gia cc cell c cng sng mang. Trong trng hp ny, UE s khng ngt kt ni vi cell trc khi thit lp cc kt ni vi cell mi. Trong sut qu trnh Soft HO, UE s c iu khin bi t nht 2 cell thuc cc Node B khc nhau ca cng 1 RNC (intraRNC SHO) hoc khc RNCs (inter-RNC SHO). Khi Soft Handover xy ra, tn hiu phn tp s c kt hp ti RNC.
Softer Handover: l qu trnh Soft HO xy ra gia cc cell trong cng 1 Node B. (Same Node B, inter sector). Khi Softer Handover din ra, tn hiu phn tp s c kt hp ti NodeB.
Trong qu trnh Soft Handover, cc cell trong h thng WCDMA c phn chia vo cc b sau: Active Set: bao gm tt c cc cell ang tham gia thc hin kt ni SHO vi UE. Neighbour Set/Monitored Set: y l 2 thut ng tng ng. B ny bao gm tt c cc cell ang tip tc c gim st/o c bi UE theo danh sch cc NodeB ln cn c cp pht bi UTRAN v khng nm trong Active Set.
Hunh Vn Gia
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Bo co th vic 2010 Detected Set: B ny bao gm tt c cc cell m UE d nhng khng nm trong Active Set va Neighbour Set. C. Cc tham s Handover gia 3G-3G UTRAN chuyn cc tham s iu khin Intra-frequency, Inter-frequency v InterRAT handover ti UE trong bn tin iu khin o c (Measurement Control Message). Cho mi loi handover UE s c thng bo: measurement objects (cells), measurement quantity (CPICH Ec/No, CPICH RSCP, Pathloss, UTRA Carrier RSSI), reporting quantities (cho cc cell active set, cc cell monitored set, cc cell detected set ring r), reporting criteria (chu k v s kin c tin hnh) v reporting mode (acknowledged/unacknowleded). Khi cc chun bo co y , UE s tr li vi 1 bn tin Measurement Report ti UTRAN. 1. Intra-frequency Handover a. Measurement Report Transfer Mode Tham s ny ch ra loi ch truyn bo co o c. Bo co o c ch Acknowledged m bo truyn li nhanh cc bo co o c b li hoc b tht lc, nng cao tin cy cho cc bo hiu v x l ti UE v RNC. Gi tr ci t Khong cho php Acknowledged mode RLC, Unacknowledged mode RLC Acknowledged mode RLC Tng ng Acknowledged mode RLC, Unacknowledged mode RLC Acknowledged mode RLC
Khuyn ngh
b. Periodical Reporting/ Event Trigger Reporting Mode Ch th ch bo co theo chu k hoc theo s kin c tin hnh. Trong 1 mng c ti, Periodical Reporting to ra ti trng cao do cc Measurement Report trn UL, do ph v quy trnh x l cng sut trong UTRAN. Tr khi cc Measurement Report c s dng ti u h thng, ch bo co c tin hnh theo s kin sHunh Vn Gia Trang 19
Bo co th vic 2010kin (Event Triggered) c a thch hn bi v cc bo co ch c chuyn sau khi UE gim st cc iu kin tin hnh. Gi tr ci t Khong cho php Periodical Reporting/ Event Trigger Event Trigger Tng ng Periodical Reporting/ Event Trigger Event Trigger
Khuyn ngh
c. Measurement quantity - measQuantity1 S lng cc tham s m UE s o trong trng hp o c Intra-frequency. Thut ng tp m v nhiu No ca CPICH Ec/No l nh nhau vi cc cell khc nhau ti cng v tr. Do intra-frequency handover s tin hnh nh nhau cho c CPICH Ec/No hoc CPICH RSCP. Bi v cc thit lp cng sut Pilot thnh thong c s dng thay i cc kch c cell, cho cn bng ti, path-loss l khng c khuyn ngh nh l 1 measurement quantity. Gi tr ci t Khong cho php CPICH Ec/No, CPICH RSCP, Pathloss CPICH Ec/No, CPICH RSCP Tng ng CPICH Ec/No, CPICH RSCP, Pathloss CPICH Ec/No, CPICH RSCP
Khuyn ngh
d. Cell reporting quantities Cha thng tin s lng bo co cho o c Intra-frequency. Kiu Boolean TRUE ngha l bao gm cc Report c yu cu.
Hunh Vn Gia
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Bo co th vic 2010Gi tr ci t Boolean (True, False) Tng ng Request report, exclude report
Khong cho php
SFN SFN (Cell system frame number) observed time difference reporting indicator (No report, type 1, type 2. Cell synchronisation information reporting indicator: Boolean Cell identity reporting indicator: Boolean CPICH Ec/No reporting indicator: Boolean CPICH RSCP reporting indicator: Boolean Pathloss reporting indicator: Boolean
Khuyn ngh
SFN SFN (Cell system frame number) observed time difference reporting indicator: No Report () Cell synchronisation information reporting indicator: TRUE Cell identity reporting indicator: FALSE () CPICH Ec/No reporting indicator: TRUE CPICH RSCP reporting indicator: TRUE Pathloss reporting indicator: FALSE
e. Intra-frequency event identity ID ca s kin s dng tin hnh bo co UE (trong trng hp bo co tin hnh s kin)Hunh Vn Gia Trang 21
Bo co th vic 2010Gi tr ci t Khong cho php Tng ng
1a, 1b, 1c, 1d, 1e, 1f, 1g, Event 1a, 1b, 1c, 1d, 1e, 1h, 1i 1f, 1g, 1h, 1i 1a, 1b, 1c 1a, 1b, 1c
Khuyn ngh
Event 1a: 1 Primary CPICH vo Reporting Range. (FDD) Event 1b: 1 Primary CPICH ri Reporting Range. (FDD) Event 1c: 1 Non-active Primary CPICH tr nn tt hn active Primary CPICH (FDD) Event 1d: Thay i cell tt nht. Event 1e: 1 Primary CPICH tr nn tt hn 1 mc ngng. (FDD) Event 1f: 1 Primary CPICH tr nn ti hn 1 mc ngng. (FDD) Event 1g, 1h, 1i: Dng trong h thng TDD. f. Filter Coefficent H s lc c s dng o cht lng CPICH hoc Ec/No. Cc o c ny c s dng bi UE c lng iu kin tin hnh s kin v c thng bo trong Measured Results ca cc bn tin MEASUREMENT REPORT. Nu tham s ny nh, cc monitored cell vi cht lng trung bnh thp, nhng CPICH Ec/No nhn c biu th dao ng nhanh v ln, c th khi to qu trnh truyn MEASUREMENT REPORT v c thm vo Active Set. Gi tr ci t Khong cho php Tng ng
0,1,2,3,4,5,6,7,8,9,11, 13, Ph thuc vo chu k o T 15, 17, 19 3 458 ms
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 2010g. Trigger condition 2 Ch ra cc cell no c tin hnh Event 1a. Cho 1 mng c u, gi tr nn c thit lp Monitored set cells trnh chuyn cc measurement report khng cn thit. Gi tr ci t Khong cho php Active set cells, Monitored set cells, Active set cells and monitored set cells, Detected set cells, Detected set cells and monitored set cells Monitored set cells Tng ng Active set cells, Monitored set cells, Active set cells and monitored set cells, Detected set cells, Detected set cells and monitored set cells
Khuyn ngh
Monitored set cells
h. Reporting Range- reportingRange1a (Event 1a) Hng s m cn thit Event 1a xy ra. Nu tham s ny thit lp qu nh, cc cell vi cht lng tt c th khng khi s c Event 1a v s khng c c hi nm trong Active Set, c th dn n cht lng thoi km, cui cng l drop call. Gi tr ci t Khong cho php [0..29] Tng ng 0..14.5 dB vi bc nhy 0.5 dB 3 dB
Khuyn ngh
6
Hunh Vn Gia
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Bo co th vic 2010i. Tham s W1a (Event 1a) H s trng lng c ng dng cho cht lng cell Event 1a xy ra. Gi tr ci t Khong cho php Khuyn ngh [0..20] 0 Tng ng 0..2 , bc nhy 0.1 0
j. Report Deactivation Threshold (Event 1a) S lng ln nht ca cc cell c cho php trong active set nhm mc ch cho Event 1a xy ra. Gi tr ci t Khong cho php Khuyn ngh [0..7] maxActiveSet -1 Tng ng 0,1,2...7 2
k. Reporting Amount (Event 1a) S lng ln nht ca cc bn tin MEASUREMENT REPORT c chuyn bi UE trong trng hp bo co c tnh chu k c tin hnh bi Event 1a. Nu tham s ny thit lp qu nh, th tc thm cell c th li khng cn thit, bi v thiu ti nguyn mng ci m ch l nht thi nhng m m rng ngoi gii hn chu k bo co. Gi tr ci t Khong cho php Tng ng
[1, 2, 4, 8, 16, 32, 64, v 1, 2, 4, 8, 16, 32, 64, v cng] cng v cng v cng
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 2010l. Reporting Interval (Event 1a)- reportingInterval1a Khong thi gian truyn cc bn tin MEASUREMENT REPORT c chuyn bi UE trong trng hp periodic reporting c tin hnh bi Event 1a. Nu tham s ny c thit lp qu nh, UE s truyn 1 s lng ln cc bo co o c khng cn thit, do phi hy qu trnh x l cng sut trong UTRAN.Nu qu lu, bo co c th khng phn nh ng mi trng ca UE. Gi tr ci t Khong cho php [0..7] Tng ng 0- khng report; 1: 0.25s ; 2:0.5s ; 3:1s; 4:2s; 5: 4s; 6:8s; 7:16s. 1s
Khuyn ngh
3
m. Hysteresis (Event 1a)- hysteresis1a Hysteresis gia iu kin activate v deactivate Event 1a reporting. Nu tham s ny qu ln, bo co o c ca cc cell c cht lng tt c th b tr, v cc bo co ca cc cell c cht lng km c th c cho php. Gi tr ci t Khong cho php [0.. 15] Tng ng 0..7.5 dB vi bc nhy 0.5 dB 0 dB
Khuyn ngh
0
n. Time to Trigger (Event 1a)- timeToTrigger1a Khong thi gian 1 s kin tin hnh iu kin phi c hon thnh trc khi truyn bn tin MEASUREMENT REPORT. Nu tham s ny qu ln, UE s lm tr qu trnh truyn cc bn tin MEASUREMENT REPORT p ng ti monitored v detected cell c cht lng tt.
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Bo co th vic 2010Gi tr ci t Khong cho php [015] Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms 100ms
Khuyn ngh
6
o. Triggering condition 1 (Event 1b) Ch ra cc cell c th tin hnh Event 1b Gi tr ci t Khong cho php Active set cells, Monitored set cells, Active set cells and monitored set cells Active set cells Tng ng Active set cells, Monitored set cells, Active set cells and monitored set cells. Active set cells
Khuyn ngh
p. Reporting range (Event 1b)- reportingRange1b Hng s m bo Event 1b xy ra. Nu hng s ny thit lp qu ln cc cell c cht lng km khng tin hnh c Event 1b v dung lng s b gim. Gi tr ci t Khong cho php [0..29] Tng ng 0..14.5 dB vi bc nhy 0.5 dB. 5 dB
Khuyn ngh
10
Hunh Vn Gia
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Bo co th vic 2010q. W1b (Event 1b) H s trng lng p dng cho cht lng cell Event 1b xy ra. Gi tr ci t Khong cho php [0..20] Tng ng 0..2, vi bc nhy l 0.1 0
Khuyn ngh
0
r. Hysteresis (Event 1b)- hysteresis1b Hysteresis tn ti gia cc iu kin activate v deactivate thng bo Event 1b. Nu tham s ny thit lp qu ln, bo co o c ca cc cell c cht lng km c th b tr. Gi tr ci t Khong cho php [0..15] Tng ng 0..7.5 dB, vi bc nhy l 0.5 0 dB
Khuyn ngh
0
s. Time to Trigger (Event 1b)- timeToTrigger1b Chu k thi gian iu kin tin hnh Event 1b phi c hon thnh trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php [0 ..15] Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms
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Bo co th vic 2010Khuyn ngh 12 640 ms
t. Replacement Activation Threshold S lng nh nht ca cc cell c cho php trong Active Set Event 1c (qu trnh thay th) din ra. Gi tr ci t Khong cho php [0..7] Tng ng Khng s dng, 1..7 cells 3
Khuyn ngh
maxActiveSet
u. Hysteresis (Event 1c) -hysteresis1c Hng s cn thit Event 1c xy ra. Nu hng s ny thit lp qu ln, cell c cht lng tt c th khng c tin hnh Event 1c. Nu hng s ny qu nh, cht lng ca cc cell ch hn Active set mt t (ngay mp) c th tin hnh Event 1c, do tng ti bo hiu m khng nng cao c cht lng cc cell Active Set. Gi tr ci t Khong cho php [0..15] Tng ng 0..7.5 dB, vi bc nhy l 0.5 1dB
Khuyn ngh
2
v. Reporting interval (Event 1C)- reportingInterval1c Chu k truyn ca cc bn tin MEASUREMENT REPORT c truyn bi UE trong trng hp cc bo co thng k xy ra bi Event 1c. Nu tham s ny qu nh, UE s truyn 1 s lng ln cc bo co khng cn thit, dn ti tng qu trnh x l cng sut trong UTRAN. Nu khong thi gian l qu lu, bo co c th khng phn nh ng mi trng truyn sng ca UE.Hunh Vn Gia Trang 28
Bo co th vic 2010Gi tr ci t Khong cho php Khuyn ngh [07] 3 Tng ng 0; 0.25;0.5; 1; 2; 4; 8;16s 0.5s
w. Timer to Trigger (Event 1c)- timeToTrigger1c Chu k thi gian iu kin tin hnh Event 1c phi c hon thnh trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php [015] Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms 320 ms
Khuyn ngh
11
x. Triggering condition 2 (Event 1e) Tham s ny ch ra cc cell c th tin hnh Event 1e. Ph thuc vo thit b ca cc vendor, 1e l c s dng de-active ch nn. (compressed mode). Ch nn ch nn c active v de-active da trn cc o c active-set. Gi tr ci t Khong cho php Active set cells, Monitored set cells, Active set cells and monitored set cells, Detected set cells, Detected set cells and Tng ng Active set cells, Monitored set cells, Active set cells and monitored set cells, Detected set cells, Detected set cells and
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Bo co th vic 2010monitored set cells Khuyn ngh Active set cells monitored set cells Active set cells
y. Hysteresis (Event 1e) Hng s m bo Event 1e xy ra. Gi tr ci t Khong cho php [0..15] Tng ng 0..7.5 dB, bc nhy 0.5 dB 4dB
Khuyn ngh
8
z. Timer to Trigger (Event 1e) Chu k thi gian iu kin tin hnh Event 1e phi c hon thnh trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php [0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000] 100 Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms 100 ms
Khuyn ngh
aa. Triggering Condition 1 (Event 1f) Ch ra cc cell c th tin hnh Event 1f. Ph thuc vo thit b ca vendor, 1f c s dng activate ch nn (compressed mode).
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Bo co th vic 2010Gi tr ci t Khong cho php Active set cells, Monitored set cells, Active set cells and monitored set cells. Active set cells Tng ng Active set cells, Monitored set cells, Active set cells and monitored set cells. Active set cells
Khuyn ngh
bb.Threshold used frequency (Event 1f) Mc ngng c thit lp bi UTRAN cho cc bo co Event 1f. Gi tr ci t Khong cho php Tng ng
Phm vi c s dng CPICH RSCP: -115..ph thuc vo s lng 25dBm php o CPICH Ec/No: -24..0 dB Pathloss: 30..165 dB
Khuyn ngh
CS services: -12 -106 PS (2G in EDGE): -14 -106
-12 dB (Ec/No) -106 dBm (RSCP) -14 dB -106 dBm
PS (2G is GPRS, no EDGE) -14 -14 dB -108 -108 dBm
Hunh Vn Gia
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Bo co th vic 2010cc. Hysteresis (Event 1f) Hng s m bo Event 1f xy ra. Gi tr ci t Khong cho php [0..15] Tng ng 0..7.5 dB, bc nhy 0.5 dB 4dB
Khuyn ngh
8
dd.Timer to Trigger (Event 1f) Chu k thi gian iu kin tin hnh Event 1f phi c tha mn trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php [0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000] 320 Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms 320 ms
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 20102. Inter frequency Handover Cc o c Inter-frequency h tr qu trnh trin khai mng UMTS qua nhiu sng mang v nhiu bng tn. a. Measurement quantity S lng bn tin m UE s tin hnh o trong trng hp inter-frequency measuremnet Gi tr ci t Khong cho php Enumerated ( CPICH Ec/No, CPICH RSCP, Pathloss) CPICH Ec/No, CPICH RSCP Tng ng CPICH Ec/No, CPICH RSCP, Pathloss
Khuyn ngh
CPICH Ec/No, CPICH RSCP
b. Inter-frequency event identity ID ca event c s dng tin hnh bo co inter-frequency UE. Gi tr ci t Khong cho php 2a, 2b, 2c, 2d, 2e, 2f Tng ng Event 2a, 2b, 2c, 2d, 2e, 2f
Khuyn ngh
Da trn c s h tng
Event 2a: Thay i tn s tt nht (FDD v TDD). Event 2b: Cht lng tn hiu ca tn s ang c s dng l di mc ngng v cht lng tn hiu ca tn s ang khng c s dng trn mc ngng (FDD v TDD).
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Bo co th vic 2010 Event 2c: Cht lng tn hiu ca tn s ang khng c s dng l trn mc ngng (FDD v TDD). Event 2d: Cht lng tn hiu ca tn s ang c s dng l di mc ngng (FDD). Event 2e: Cht lng tn hiu ca tn s ang khng c s dng l di mc ngng (FDD v TDD). Event 2f: Cht lng tn hiu ca tn s ang c s dng l trn mc ngng (FDD). Event 2d c s dng tin hnh trong ch nn v 2f kt thc ch nn. Trong mt vi trng hp, 1f v 1e c s dng. c. Filter coefficient H s lc c s dng o cht lng CPICH hoc Ec/No. Gi tr ci t Khong cho php 0,1,2,3,4,5,6,7,8,9,11, 13, 15, 17, 19 3 Tng ng Ph thuc vo chu k o T 458 ms
Khuyn ngh
d. W used frequency (Event 2x) H s trng lng c p dng cho cht lng cell Event 2x (2a, 2b, 2d, 2f) xy ra. Gi tr ci t Khong cho php Khuyn ngh [0..20] 0 Tng ng 0..2 , bc nhy 0.1 0
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Bo co th vic 2010e. Hysteresis (Event 2a) Hng s cn phi c tha mn Event 2a xy ra. Nu tham s ny qu nh, qu trnh handover inter-frequency c th s l nguyn nhn dn ti hin tng pingpong gia cc tn s. Nu tham s ny qu ln, cc qu trnh handover c th b tr cho n khi c 1 tn s khc c cht lng tn hiu tt hn nhiu so vi tn s hin ti. Gi tr ci t Khong cho php [0..29] Tng ng 0..14.5, bc nhy 0.5 dB
Khuyn ngh
f. Time to trigger (Event 2a) Chu k thi gian iu kin tin hnh Event 2a phi c tha mn trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Nu tham s ny thit lp qu nh, ch nn s c active khi cha ln, lng ph dung lng. Nu thit lp qu cao, ch nn c active qu tr, nguy c rt cuc gi. Gi tr ci t Khong cho php [0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000] Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 2010g. Threshold used/non-used frequency (Event 2b)usedFreqRelThresh4_2bEcno/nonUsedFreqThresh4_2bEcno ; usedFreqRelThresh4_2bRscp / nonUsedFreqThresh4_2bRScp Hng s cn phi c tha mn Event 2b xy ra. Gi tr ci t Khong cho php usedFreqRelThresh4_2bEcno: [-10 10]; usedFreqRelThresh4_2bRscp: [-20 20]; nonUsedFreqThresh4_2bEcno: [-24 0] nonUsedFreqThresh4_2bRscp: [-115 -25] usedFreqRelThresh4_2bRscp=-1 usedFreqRelThresh4_2bEcno=-1 nonUsedFreqThresh4_2bEcno=-9 nonUsedFreqThresh4_2bRscp=-95 Tng ng
Khuyn ngh
h. Time to trigger (Event 2b)- timeTrigg4_2b Chu k thi gian iu kin tin hnh Event 2b phi c tha mn trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php [0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000] 100 Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms 100ms
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 2010i. Threshold used frequency (Event 2d)usedFreqThresh2dEcnoDrnc/usedFreqThresh2dRscpDrnc Cht lng tn hiu ca tn s ang c s dng l thp hn mc ngng. Gi tr ci t Khong cho php usedFreqThresh2dRscpDrnc: [-115 -25] usedFreqThresh2dEcnoDrnc: [-24 0] usedFreqThresh2dEcnoDrnc= -12 usedFreqThresh2dRscpDrnc= -100 Tng ng
Khuyn ngh
j. Time to trigger (Event 2d)- timeToTrigger2dEcno/ timeToTrigger2dRscp Chu k thi gian iu kin tin hnh Event 2d phi c tha mn trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php [0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000] 320 Tng ng 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000 ms 320ms
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 2010k. Threshold used frequency (Event 2f)usedFreqRelThresh2fRscp/usedFreqRelThresh2fEcno Cht lng tn hiu ca tn s ang c s dng l trn mc ngng. Gi tr ci t Khong cho php Khuyn ngh [0..20] usedFreqRelThresh2fEcno=2 usedFreqRelThresh2fRscp=3 Tng ng
l. Hysteresis (Event 2f)- hysteresis2f Cht lng tn hiu ca tn s ang c s dng trn mc ngng. Gi tr ci t Khong cho php [0..29] Tng ng 0..14.5, bc nhy 0.5 dB
Khuyn ngh
0
m. Time to trigger (Event 2f)- timeToTrigger2fEcno/timeToTrigger2fRscp Chu k thi gian iu kin tin hnh Event 2f phi c tha mn trc khi qu trnh truyn bn tin MEASUREMENT REPORT c th c xy ra. Gi tr ci t Khong cho php Tng ng
[0, 10, 20, 40, 60, 80, 100, 0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 120, 160, 200, 240, 320, 640, 1280, 2560, 5000] 640, 1280, 2560, 5000 ms 1280 1280ms
Khuyn ngh
Hunh Vn Gia
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Bo co th vic 2010 KT LUN
Cc tham s v tuyn c vai tr quan trng trong vic quyt nh cht lng mng li 3G. Trong , cc tham s ch ri, cc tham s trong qu trnh chuyn giao gia 3G 3G l trng yu khi ti u mng li trong giai on hin nay ca h thng 3G Trung tm Thng tin Di ng Khu vc 2. Qua thi gian tm hiu v nghin cu cc tham s v tuyn ch ri, cc tham s v tuyn trong qu trnh chuyn giao gia 3G 3G, ti hiu r c ngha, phm vi ng dng v gi tr ca chng. Kt qu ny gip cho ti thc hin cng tc ti u mng li trong thi gian ti tt hn v hon thnh tt cc nhim v c giao. Vi thi gian thc hin c hn nn bo co cn nhiu hn ch, rt mong c s cm thng v ng gp kin ca cc anh ch, t ti c th hc hi v cng c kin thc ca mnh ngy cng hon thin hn.
Hunh Vn Gia
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Bo co th vic 2010 CC T VIT TT
Ting Anh 3G CPICH Ec/No EDGE FDD GSM HCS HHO HO HSDPA HSUPA MS RAT RLA RLC RSCP RSSI RX 3rd Generation Common Pilot Channel
Ting Vit Th h th ba Knh Pilot thng thng
Ratio of energy per modulating bit T l nng lng ca mi bit iu to the noise spectral density ch trn nhiu Enhanced Data Rates for GSM Ci thin tc s liu cho pht Evolution trin GSM Frequency Division Duplex Global System Communications for Ghp song cng phn chia theo tn s
Mobile H thng thng tin di ng ton cu Cu trc cell phn cp Chuyn giao cng Chuyn giao
Hierachical Cell Structure Hard Handover Handover
High Speed Downlink Packet data Truy nhp d liu gi ng Access xung tc cao High Speed Uplink Packet data Truy nhp d liu gi ng ln Access tc cao Mobile Station Radio Access Technology Radio signal Level Averaged Radio Link Control Received Sinal Code Power Received Sinal Strength Indicator Receiver Trm di ng Cng ngh truy nhp v tuyn Mc tn hiu v tuyn trung bnh iu khin kt ni v tuyn Cng sut m tn hiu thu Cng tn hiu thu B thu
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Bo co th vic 2010RXLEV RXQUAL SHO TDD UE UTRAN WCDMA Received signal Level Received signal Quality Soft Handover Time Division Duplex User Equipment Mc tn hiu thu Cht lng tn hiu thu Chuyn giao mm Ghp song cng phn chia theo thi gian Thit b u cui
UMTS Terresrial Radio Access Mng truy nhp v tuyn mt t Network UMTS Wideband Code Division Multiple a truy nhp bng rng phn chia Access theo m
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Bo co th vic 2010 TI LIU THAM KHO
1. WCDMA RAN P7 Design and Functionality (Ericsson) 2. WCDMA Parameter Setting Guidelines (QualComm) 3. UMTS R99 Interface Protocols and Procedures (QualComm)
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