SMS Interworking between IMS UE without MSISDN and traditional UE

3GPP TR23.863

Student: Yuan-Bo Chang

Advisor: Whai-En Chen

SMS Interworking between IMS UE without MSISDN and traditional UE

(e.g., CS) with MSISDN

1

Introduction(1/2)� Existing SMS infrastructure that an operator has in

place e.g. SC, GMSC-SMS, IWMSC is able to bereused. This is achieved by mandating MSISDN aspart of the SMS delivery addressing, even for SMSdelivery toward IMS.

� MTC allows the UE to have PS only subscriptionwithout MSISDN. Such UE may also be IMS UE.Allowing Messages delivery to these UEs in IMSwithout MSISDN is an important requirement forthese devices.

2

Introduction(2/2)� There is a need to improve the SMS submit/delivery

mechanism within IMS to allow MSISDN-less delivery toward the IMS registered UEs.

� IMS UEs without MSISDN that need to be investigated:� SMS Interworking between IMS UE without MSISDN

and traditional UE (e.g., CS) with MSISDN.

3

Machine Type Communication(MTC)

MTC

Server

3GPP SMS/

IMSMTC

Device

MTC

Device

MTC

Device

3GPP

PLMN

MTC

Server

IWK

Function

Public Land Mobile Network(PLMN) 4

Traditional SMS Network Architecture

Mobile-services Switching Center (MSC)

Gateway MSC For Short Message Service (SMS GMSC)

Interworking MSC For Short Message Service (SMS IWMSC)

Short Message Service-Service Center (SMS-SC)

Serving GPRS Support Node (SGSN)

Home Location Register (HLR)

Visiting Location Register (VLR)

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Support of Short Message Service (SMS) Internet Protocol (IP) access

IMSCore

IP-Short-Message-Gateway (IP-SM-GW)

HSS(Home Subscriber Server)

P-CSCF (Proxy-CSCF) S-CSCF (Serving-CSCF)

6

Transfer Protocol Data Units (TPDUs)Transfer protocol data units (TPDUs) in SM-TP:

� SMS-SUBMIT (MS → SM-SC)� Validity period

� SMS-SUBMIT-REPORT

� SMS-DELIVER (SM-SC → MS)� More-To-Send

� SMS-DELIVER-REPORT

� SMS-STATUS-REPORT (SM-SC → MS)

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Relay Protocol Data Units (RPDUs)Transfer protocol data units (RPDUs) in SM-RL:

� RP-DATA (MS ↔ SM-SC)

� RP-SM-MEMORY-AVAILABLE

� RP-ACK (MS ↔ SM-SC)

� RP-ERROR (MS ↔ SM-SC)

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Registration procedure

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MSISDN-less IMS UE to Traditional UE

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Direct delivery with IP-SM-GW interworking

Cont,

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Traditional UE to MSISDN-less IMS UE� Alternative 1: SMS Delivery through IP-SM-GW

� Alternative 2: SMS Delivery through specific Server

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SMS Delivery through IP-SM-GWShort message mobile originated procedure:

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SMS Delivery through IP-SM-GW

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Short message mobile terminated procedure(1/2)

SMS Interworking between IMS UE without MSISDN and traditional UE

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