1. MSISDN delivery in eHRPD
China Telecomm
Peirong
Wenyi
Hongmei
Dec, 2012
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2. Background(1) In eHRPD, MSISDN(MSID) is needed in many cases.
For example
Application charging in WAPGW need to use MSISDN to identify the user
PGW-UDR and HSGW-UDR also need the MSISDN
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3. Background(2)
HSS can send MSISDN to 3GPP AAA in SWx interface (defined in 3GPP TS29.273)
Howerver there is no MSISDN IE in Sta and S2a interface. PGW and WAPGW can not get the user MSISDN in eHRPD.
Recently 3GPP has added MSISDN IE to Sta and S2a in R11( only R11). It is mainly using in Wifi access in SAMOG work item
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4. MSISDN delivery in HRPD
AAA
1) Radius（MSID）
BTS
2) Radius（MSID）
BSC AT
PDSN
WAP GW
PDSN get MSID from authentication response message
When UE attach HRPD using WAP APN，PDSN sent Accounting Request (including MSID) to WAPGW
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5. MSISDN delivery in WCDMA
HLR
1) Auth Res（MSISDN）
NodeB
RNC AT
SGSN
WAP GW
GGSN
2) GTP（MSISDN）
3) Radius（MSISDN）
SGSN get MSISDN from authentication response message
SGSN send MSISDN to GGSN using GTP message (Create PDP context Request)
When UE attach WCDMA using WAP APN，GGSN sent Accounting Request (including MSISDN) to WAPGW
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6. MSISDN delivery in LTE
1) Auth Resp（MSISDN）
MME
HSS
2) GTP（MSISDN）
eNodeB UE
SGW
WAP GW
PGW
3) GTP（MSISDN）
4) Radius（MSISDN）
MME get MSISDN from authentication response message
MME send MSISDN to SGW using GTP message(Create Session Request)
SGW send MSISDN to PGW using GTP message (Create PDP context Request)
When UE attach LTE using WAP APN，PGW sent Accounting Request (including MSISDN) to WAPGW
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7. Proposals 1 3GPP AAA get MSISDN from authentication response message
3GPP/3GPP2 AAA
1) Dimeter（MSISDN）
HSS
2) Dimeter（MSISDN）
eAN UE
HSGW
3) PMIPv6（MSISDN）
WAP GW
PGW
4) Radius（MSISDN）
3GPP AAA get MSISDN from authentication response message
3GPP AAA send MSISDN to HSGW through Sta/Pi* interface
HSGW send MSISDN to PGW using PMIPv6 message (PBU)
When UE attach eHRPD using WAP APN，PGW sent Accounting Request (including MSISDN) to WAPGW
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8. Proposals 2 3GPP AAA get MSISDN from authentication response message
3GPP/3GPP2 AAA
1) Dimeter（MSISDN）
HSS
4) Radius（MSISDN）
eAN
eAT
HSGW
WAP GW
PGW
3GPP AAA get MSISDN from authentication response message
3GPP AAA send sent Accounting Request (including MSISDN) to WAPGW directly
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9. Impact of the proposals
Need to add MSISDN IE in Sta/Pi* and S2a interface in R8/R9/R10 ( which has difined in R11 )
Accordance with LTE/WCDMA
HSGW and PGW can get the MSISDN
Propolsal2
3GPP AAA should be aware of that the UE is accessing the WAP APN
HSGW and PGW cant get the MSISDN and cant include it in UDR
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10. Recommendations
adopt proposal 1 to delivery the MSISDN.
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