1 Introduction
This document provides DT (Data Transcript) template for Ericsson 2G nodes to introduce IRAT handover feature. 2G to 3G handover CS call is not planned to be implemented in the network. Example is given where possible.
2 Revision Information
A – First version
B – updated on 10-04-05. Changed CGI with LAI in MGOCI
C – updated on 10-04-05
3 2G BSC DT
3.1 Activate features in the BSC to support IRAT
Activate IRAT feature:
DBTSP:TAB=AXEPARS,NAME=SUPCOEXUMTS;
SYPAC:ACCESS=ENABLED,PSW=PSW2PAR;
DBTRI;
DBTSC:TAB=AXEPARS,SETNAME=CME20BSCF,NAME=SUPCOEXUMTS,VALUE=1;
DBTRE:COM;
SYPAC:ACCESS=DISABLED;
DBTSP:TAB=AXEPARS,NAME=SUPCOEXUMTS;
RAEPP:ID=COEXUMTS;
RAEPC:PROP=COEXUMTS-1;
RAEPP:ID=COEXUMTS;
Set the interval at which the load in the GSM cell is measured:
RAEPP:ID=COEXUMTSTINT;
RAEPC:PROP=COEXUMTSTINT-1000;
RAEPP:ID=COEXUMTSTINT;
3.2 Define data for 2G to 3G cell reselection
Define UTRAN measurement frequency information in all IRAT 2G cells:
RLUMP:CELL=gsmcell;
RLUMC:CELL=gsmcell,ADD,UMFI=fddarfcn-scramblingcode-NODIV,LISTTYPE=IDLE;
RLUMP:CELL= gsmcell;
Example:
RLUMP:CELL=C3D32A1;
RLUMC:CELL=C3D32A1,ADD,UMFI=487-128-NODIV,LISTTYPE=IDLE;
RLUMP:CELL=C3D32A1;
3.3 Add UTRAN data to System Information for 2G cells participating in IRAT HO
RLSBP:CELL=gsmcell;
RLSBC:CELL= gsmcell,ECSC=YES;
RLSBP:CELL= gsmcell;
RLSUP:CELL= gsmcell;
RLSUC:CELL=gsmcell,FDDMRR=1,QSC=15,QSCI=1,QSI=7,SPRIO=YES,FDDQMIN=6,FDDQOFF=0; ! with Cingular recommended values with NO 2G to 3G CS Handover!
RLSUP:CELL=gsmcell;
Example:
RLSBP:CELL=C3D32A1;
RLSBC:CELL=C3D32A1,ECSC=YES;
RLSBP:CELL=C3D32A1;
RLSUP:CELL=C3D32A1;
RLSUC:CELL=C3D32A1,FDDMRR=1,QSC=15,QSCI=1,QSI=7,SPRIO=YES,FDDQMIN=6,FDDQOFF=0;
RLSUP:CELL=C3D32A1;
4 2G MSC DT
4.1 Activate features in the MSC to support IRAT
DBTSP:TAB=AXEPARS,SETNAME=GSMMMSF,NAME=MSCNF946;
SYPAC:ACCESS=ENABLED,PSW=PSW2PAR;
DBTRI;
DBTSC:TAB=AXEPARS,SETNAME=GSMMMSF,NAME=MSCNF946,VALUE=1;
DBTRE:COM;
SYPAC:ACCESS=DISABLED; DBTSP:TAB=AXEPARS,SETNAME=GSMMMSF,NAME=MSCNF946;
BSC to be defined as GSM99:
MGBSP:BSC=bsc;
MGBSC:BSC=bsc,BSCDATA=PHASE2-1;
Example:
MGBSC:BSC=RDMNDC6,BSCDATA=PHASE2-1;
4.2 Define outer Cells LAC of the 3G network
MGOCI:CELL=anyname,LAI=mcc(3g)-mnc(3g)-lac(3g),MSC=3gmsc;
Example:
MGOCI:CELL=3GLAI,LAI=310-980-47,MSC=3GALMSC;
4.3 MSC Routing, Signalling data
Cingular is taking responsibility for defining the data
Beginning of Cingular task:
Define Data for intra-MSC handover to 3G MSC:
Incoming Handover route:
EXROI:R=routename,DETY=MHOC,FNC=2;
Neighboring 3GMSC:
MGNMI:MSC=3gmsc,MSCADDR=3gmsc_address,R= routename;
Neighboring 3GVLR:
MGCVI:VLR=3gmsc,VLRADDR=3gvlr_address,MAPV=MAP-3,LAI=locarea_in_3gmsc;
S7 Data towards 3GMSC & 3GVLR:
S7TZI;
S7TCI;
S7TSI:GTS=3gmsc_address,GTRC=x;!3GMSC!
S7TSI:GTS=3gvlr_address,GTRC=x; !3GVLR!
S7TAI;
S7NPI:SP=3gmsc_SPC;
S7NSI:SP=3gmsc_SPC,SSN=7;
S7NSI:SP=3gmsc_SPC,SSN=8;
Routing analysis on 3G handover number (network dependent info):
EXROI on intermsc_trunkroute
ANRSI to define routing case
ANBSI to define B-nr analysis
LATA connection to 3GMSC (network dependent info):
MGLXI
MGLXP
Example:
EXROI:R=7MHOC1,DETY=MHOC,FNC=2;
MGNMI:MSC=3GALMSC,MSCADDR=4-19078319870,R=7MHOC1;
MGNMP:MSC=ALL;
MGCVI:VLR=3GALMSC,VLRADDR=4-19078319870,MAPV=MAP-3,LAI=310-980-31; !MSC & VLR addresses are same in Ericsson CN!
MGCVP:VLR=ALL;
S7TZI;
S7TCI;
S7TSI:GTS=10-19078319870,GTRC=9;!3GMSC & 3GVLR!
S7TAI;
S7NPI:SP=229-99-70;
S7NSI:SP=229-99-70,SSN=7;
S7NSI:SP=229-99-70,SSN=8;
4.4 Define equivalent PLMN if PLMNs are different in 3G and 2G
MGELP:EPLMNL=ALL;
MGCPP: EPLMNL=ALL;
MGELI:EPLMNL=eplmnl,PLMN=plmn...;
MGCPI:EPLMNL=eplmnl,LAI=lai...; ! connect equivalent PLM to Loc Area!
End of Cingular task.
5 2G SGSN DT
Activate the nodeproperty for the usage of DNS for LAC-RAC lookup. Activate equivalent PLMN feature in the SGSN.
Define equivalent PLMN if PLMNs are different in 3G and 2G network.
Verify the new LAC-RACs with quiry to DNS.
The following commands are used to configure Ericsson SGSNs for IRAT:
gsh set_nodeproperty Gn_UseDnsMapRaToSgsnAddress –val true
gsh create_imsins ImsiNumberSeries -rs Home|Visitor -dn DomainName -np NumberingPlan [-na NatureOfAddress] [-rd NoOfDigitsToRemove] [-ad DigitsToAdd] [-misc1 String] [-misc2 String] [-misc3 String] [-phase3 CamelPhase3] [-qpmw QoSPolicyMap] [-qpmg QoSPolicyMap]
set_feature equivalent_plmns ok
gsh create_epl_plmn EquivalentPlmnList -plmn “Plmn”
gsh create_epl_imsins ImsiNumberSeries -eplp EquivalentPlmnListPointer
gsh create_epl_lai Lai [-epl0 EquivalentPlmnList0] [-epl1 EquivalentPlmnList1] [-epl2 EquivalentPlmnList2] [-epl3 EquivalentPlmnList3] [-epl4 EquivalentPlmnList4] [-epl5 EquivalentPlmnList5] [-def DefaultEquivalentPlmnList]
gsh create_csgsn SgsnName -ip SgsnAddress (Not needed, since DNS solutionis used for LAC-RAC lookup)
gsh create_cra Rai -sgsn SgsnName (Not needed, since DNS solutionis used for LAC-RAC lookup)
How to quiry and verify a new LAC-RAC from SGSN?
Login to SGSN, go to “/tmp/DPE_SC/ApplicationData/dnsApp/”, type ./test_resolve and enter the LAC-RAC.
e.g.
=== root@eqm01s14p2 ANCB ApplicationData/dnsApp # ./test_resolv
Enter hostname or 'quit' to exit: rac0001.lacCB28 mnc410.mcc310.gprs
Official hostname: rac0001.lacCB28.mnc410.mcc310.gprs
address: 66.102.182.65
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