LTE TIMERS Timer (RRC) Following table is from 36.331 7.3 Timers (Informative) Timer
Start
T3 Transmission T3 Transmission of !!""onne#tion!e$%est
Stop !e#eption of !!""onne#tionSet%p !!""onne#tionSet%p or !!""onne#tion!e&e#t !!""onne#tion!e&e#t message' #ell resele#tion an %pon abortion of #onne#tion establis*ment by %pper layers
At expiry +erform t*e a#tions as spe#ifie in ,.3.3.6
T31 T31 Transm Transmiss ission ion of !e#eption of -o to !!""onne#tion!eestabils*ment! !!""onne#tion!eestablis*ment !!"I/0 e$%est or !!""onne#tion!eestablis*ment !e&e#t message as well as w*en t*e sele#te #ell be#omes %ns%itable T32 !e#eption of !!""onne#tion!e&e#t !!""onne#tion!e&e#t w*ile performing !!" #onne#tion establis*ment
pon entering Inform %pper !!""455"T/ an %pon #ell layers abo%t resele#tion barring alleviation as spe#ifie in ,.3.3.7
T33 A##ess A##ess barre barre w*ile w*ile performin performing g pon entering Inform %pper !!" #onne#tion establis*ment for !!""455"T/ an %pon #ell layers abo%t mobile originating #alls resele#tion barring alleviation as spe#ifie in ,.3.3.7 T3 T3 !e#ept !e#eption ion of !!""onne#tion!e#onfig%ration message in#l%ing t*e obility"ontrol Info or re#eption of obilityFromT!A obilityFromT!A"omman "omman message in#l%ing "ell"*ange4rer
"riterion for s%##essf%l #ompletion of *anover to T!A or #ell #*ange orer is met (t*e #riterion is spe#ifie in t*e target !AT in #ase of inter !AT)
In #ase of #ell #*ange orer from T!A or intra T!A *anover' initiate t*e !!"#onne#ti on re establis*men t pro#e%re8 In #ase of *anover to T!A' perform t*e a#tions efine in t*e
spe#ifi#ations appli#able for t*e so%r#e !AT. T3, A##ess barre w*ile performing pon entering Inform %pper !!"#onne#tion establis*ment for !!""455"T/ an %pon #ell layers abo%t mobile originating signalling resele#tion barring alleviation as spe#ifie in ,.3.3.7 T31 pon ete#ting p*ysi#al layer problems i.e. %pon re#eiving 531 #onse#%tive o%tofsyn# ini#ations from lower layers
pon re#eiving 5311 #onse#%tive insyn# ini#ations from lower layers' %pon triggering t*e *anover pro#e%re an %pon initiating t*e #onne#tion reestablis*ment pro#e%re
If se#%rity is not a#tivate9 go to !!"I/0 else9 initiate t*e #onne#tion re establis*men t pro#e%re
T311 pon initiating t*e !!"#onne#tion Sele#tion of a s%itable T!A nter reestablis*mentmpro#e%re #ell or a #ell %sing anot*er !AT. !!"I/0 T32 pon re#eiving t32 or %pon #ell (re)sele#tion to T!A from anot*er !AT wit* valiity time #onfig%re for ei#ate priorities (in w*i#* #ase t*e remaining valiity time is applie).
pon entering !!""455"T/' w*en +05 sele#tion is performe on re$%est by 5AS' or %pon #ell (re)sele#tion to anot*er !AT (in w*i#* #ase t*e timer is #arrie on to t*e ot*er !AT).
T321 pon re#eiving meas"onfig pon a#$%iring t*e information in#l%ing a report"onfig wit* t*e neee to set all fiels of p%rpose set to report"-I #ell-lobalI for t*e re$%este #ell' %pon re#eiving meas"onfig t*at in#l%es removal of t*e report"onfig wit* t*e p%rpose set to report"-I
/is#ar t*e #ell resele#tion priority information provie by ei#ate signalling. Initiate t*e meas%remen t reporting pro#e%re' stop performing t*e relate meas%remen ts an remove t*e #orresponin g measI
Timer (EPS Mobile Management - UE Side) Following table #omes from 2.31 1.2 Timers of +S mobility management (Table 1.2.19 +S mobility management timers : sie)
TI! 5.
TI! ;A0
STAT
"AS 4F STA!T
54!A0 ST4+
45 <+I!=
T32
/efa%lt 12 min. 54T 1
/!-IST!/ !-IST!/
At atta#* fail%re an t*e attempt #o%nter is e$%al to ,. At tra#>ing area %pating fail%re an t*e attempt #o%nter is e$%al to ,.
ATTA"? !@ST Initiation of t*e sent T!A"I5- A!A atta#* pro#e%re or +/AT !@ST TA pro#e%re sent
T31
1,s
!-IST!/I5ITIAT/
ATTA"? !@ST sent
ATTA"? A""+T re#eive ATTA"? !B"T re#eive
Start T311 or T32 as es#ribe in s%b#la%se ,.,.1.2.6
T311
1s
/!-IST!/. ATT+TI5- T4ATTA"? !-IST!/. ATT+TI5- T4+/AT
At atta#* fail%re %e to lower layer fail%re' T31 timeo%t or atta#* re&e#te wit* ot*er #a%se val%es t*an t*ose treate in s%b#la%se ,.,.1.2.,. At tra#>ing area %pating fail%re %e to lower layer fail%re' T33 timeo%t or TA re&e#te wit* ot*er #a%se val%es t*an t*ose treate in s%b#la%se ,.,.3.2.,.
ATTA"? !@ST sent T!A"I5- A!A +/AT !@ST sent
!etransmission of t*e ATTA"? !@ST or T!A"I5- A!A +/AT !@ST
T312
/efa%lt , min. 54T 2 54T ,
!-IST!/
In !-IST!/' w*en "455"T/ moe is left.
C*en entering state Initiation of t*e /!-IST!/ perioi# TA or pro#e%re w*en entering "455"T/ moe.
T316
3s
!-IST!/ I5ITIAT/ !-IST!/ /!-IST!/ I5ITIAT/ T!A"I5-A!A +/ATI5I5ITIAT/ S!;I" !@ST I5ITIAT/
!A5/ an !S store S"!IT= 4/ /elete t*e store as a res%lt of a TS "4A5/ re#eive !A5/ an !S a%t*enti#ation S!;I" !B"T #*allenge re#eive T!A"I5- A!A +/AT A""+T re#eive AT?5TI"ATI45 !B"T re#eive AT?5TI"ATI45 FAI0! sent /!-IST!/ or 500 entere
T317
,s
S!;I"!@STI5ITIAT/
S!;I" !@ST sent
Dearers *ave been set Abort t*e pro#e%re %p S!;I" !B"T re#eive
T317ext 1s
S!;I"!@STI5ITIAT/
a##epte by t*e E
Intersystem #*ange from S1 moe to A-b moe or I% moe is #omplete Intersystem #*ange from S1 moe to A-b moe or I% moe is faile S!;I" !B"T re#eive
T31G
2s
!-IST!/I5ITIAT/ !-IST!/ T!A"I5-A! A+/ATI5-I5ITIAT/ /!-IST!/I5ITIAT/ S!;I"!@STI5ITIAT/
AT?5TI"ATI45 AT?5TI"ATI45 FAI0! ( #a%se !@ST re#eive H 2 EA" fail%reE or 26 Enon+S a%t*enti#ation %na##eptableE) sent
4n first expiry' t*e s*o%l #onsier t*e networ> as false
T32
1,s
!-IST!/ I5ITIAT/ !-IST!/ /!-IST!/ I5ITIAT/ T!A"I5-A!A +/ATI5I5ITIAT/ S!;I" !@ST I5ITIAT/
AT?5TI"ATI45 FAI0! (#a%se H 21 Esyn#* fail%reE) sent
AT?5TI"ATI45 !@ST re#eive
4n first expiry' t*e s*o%l #onsier t*e networ> as false
T321
1,s
/!-IST!/ I5ITIAT/ /TA"? !@ST sent
/TA"? A""+T re#eive
!etransmission of /TA"? !@ST
T323
54T 3
!-IST!/
C*en entering state Set TI5 to E+TSIE /!-IST!/ or w*en entering "455"T/ moe.
T33
1,s
T!A"I5- A!A +/ATI5- T!A"I5- A!A I5ITIAT/ +/AT !@ST sent
T312 expires w*ile t*e is in !-IST!/.54 "00A;AI0AD0 an IS! is a#tivate.
T!A"I5- A!A +/AT A""+T re#eive T!A"I5- A!A +/AT !B"T re#eive
Abort t*e pro#e%re
Start T311 or T32 as es#ribe in s%b#la%se ,.,.3.2.6
T3
1s
!-IST!/ I5ITIAT/ T!A"I5- A!A +/ATI5I5ITIAT/ /!-IST!/ I5ITIAT/ S!;I" !@ST I5ITIAT/ !-IST!/
ATTA"? !B"T' /TA"? !@ST' T!A"I5- A!A +/AT !B"T wit* any of t*e #a%se 11' 12' 13' 1 or 1, S!;I" !B"T re#eive wit* any of t*e #a%se 11'12' 13 or 1, T!A"I5- A!A +/AT A""+T re#eive after t*e sent T!A"I5- A!A +/AT !@ST in I/0 moe wit* no Ea#tiveE flag
Signalling #onne#tion release Dearers *ave been set %p
!elease t*e signalling #onne#tion an pro#ee as es#ribe in s%b#la%se ,.3.1.2
T32
54T
!-IST!/
S!;I" !B"T re#eive wit* #a%se 3J E"S omain temporarily not availableE
T!A"I5- A!A +/AT !@ST sent
5one
5ote 1
T*e efa%lt val%e of t*is timer is %se if t*e networ> oes not ini#ate anot*er val%e in an signalling pro#e%re.
5ote 2
T*e val%e of t*is timer is provie by t*e networ> operator %ring t*e atta#* an tra#>ing area %pating pro#e%res.
5ote 3
T*e val%e of t*is timer may be provie by t*e networ> in t*e ATTA"? A""+T message an T!A"I5- A!A +/AT A""+T message. T*e efa%lt val%e of t*is timer is ienti#al to t*e val%e of T312.
5ote
T*e val%e of t*is timer is provie by t*e networ> operator w*en a servi#e re$%est for "S fallba#> is re&e#te by t*e networ> wit* #a%se 3J E"S omain temporarily not availableE.
5ote ,
T*e efa%lt val%e of t*is timer is %se if t*e networ> oes not ini#ate a val%e in t*e T!A"I5- A!A +/AT A""+T message an t*e oes not *ave a store val%e for t*is timer.
Timer (EPS Mobile Management - NW Side) Following table #omes from 2.31 1.2 Timers of +S mobility management (Table 1.2.29 +S mobility management timers : 5etwor> sie) TI! 5.
TI! ;A0
STAT
"AS 4F STA!T
54!A0 ST4+
T313
54T 2
!-IST!/
+aging pro#e%re for +S servi#es initiate
+aging pro#e%re for +S servi#es #omplete
T322
6s
/!-IST!/ I5ITIAT/
/TA"? !@ST sent /TA"? A""+T re#eive
45 T? 1st' 2n' 3r' t* <+I!= (54T 1) 5etwor> epenent
!etransmission of /TA"? !@ST
T3,
6s
"445 +!4"I5IT ATTA"? A""+T sent T!A"I5- A!A +/AT A""+T sent wit* -TI T!A"I5- A!A +/AT A""+T sent wit* TSI -TI !A004"ATI45 "4A5/ sent
ATTA"? "4+0T re#eive T!A"I5- A!A +/AT "4+0T re#eive -TI !A004"ATI45 "4+0T re#eive
!etransmission of t*e same message type' i.e. ATTA"? A""+T'T!A"I5- A!A +/AT A""+T or -TI !A004"ATI45 "4A5/
T36
6s
"445 +!4"I5IT AT?5TI"ATI45 !@ST sent S"!IT= 4/ "4A5/ sent
AT?5TI"ATI45 !S+45S re#eive AT?5TI"ATI45 FAI0! re#eive S"!IT= 4/ "4+0T re#eive S"!IT= 4/ !B"T re#eive
!etransmission of t*e same message type' i.e.AT?5TI"ATI45 !@ST or S"!IT= 4/ "4A5/
T37
6s
"445 +!4"I5IT I/5TIT= !@ST sent
I/5TIT= !S+45S re#eive
!etransmission of I/5TIT= !@ST
obile /efa%lt All ex#ept rea#*able min /!-IST!/ greater t*an T312
ntering I/0 moe
5AS signalling 5etwor> epenent' b%t #onne#tion establis*e typi#ally paging is *alte on 1st expiry
Impli#it eta#* timer
T*e mobile rea#*able timer expires w*ile t*e networ> is in I/0 moe
5AS signalling Impli#itly eta#* t*e #onne#tion establis*e on 1st expiry
54T 19
54T 3
All ex#ept /!-IST!/
Typi#ally' t*e pro#e%res are aborte on t*e fift* expiry of t*e relevant timer. x#eptions are es#ribe in t*e #orresponing pro#e%re es#ription.
54T 29 T*e val%e of t*is timer is networ> epenent. 54T 39
T*e val%e of t*is timer is networ> epenent. If IS! is a#tivate' t*e efa%lt val%e of t*is timer is min%tes greater t*an T323.
