MSISDN delivery in eHRPD China Telecomm Peirong Xie(xiepr@gsta.com) Wenyi Li(liwenyi@gsta.com) Hongmei Zhu(zhuhongmei@gsta.com) Dec, 2012 Page 1

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 Page 2

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 Page 3

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 Page 4

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 Page 5

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 Page 6

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 Page 7

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 Page 8

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 Page 9

Recommendations adopt proposal 1 to delivery the MSISDN. Page 10