3GPP2 Femto Cell Workshop <IMS Services for Femtocell> S00-FEMTO-20070915-006 3GPP2 Femto Cell Workshop TITLE: IMS Services for Femtocell SOURCE: Dennis Ong, Alcatel-Lucent Donna Sand Alcatel-Lucent CONTACT: hdong@alcatel-lucent.com dsand@alcatel-lucent.com ABSTRACT: This contribution defines the services that interface between the femtocell and the IMS core network with the goal of having open services interfaces to support multi-vendor femtocell RECOMMENDATION: <Discuss and Adopt / FYI > Alcatel-Lucent grants a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner's name any Organizational Partner's standards publication even though it may include all or portions of this contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner's standards publication. Alcatel-Lucent is also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner’s standard which incorporates this contribution. This document has been prepared by Alcatel-Lucent to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on Alcatel-Lucent. Alcatel-Lucent specifically reserves the right to amend or modify the material contained herein and to any intellectual property of Alcatel-Lucent other than provided in the copyright statement above.

Objectives To define the services architecture between the femtocell and the IMS Core Network (IMS CN) that will enable a multi-vendor femto environment. The services are: Phase 1 1x voice Handoffs – Two options SIP/MAP (ANSI-41): Support Macro <-> Femto, Femto <-> Femto A21/Voice Call Continuity(VCC): Only support Femto -> Macro Services Interworking Femto emulates SIP simple endpoint to IMS CN Proposed Interworking Call Flow example shown in following slides (call hold without announcement) Short Message Service Interworking Support using both TSG-X X.P0048 SIP MESSAGE and MAP SMDPP Proposed Interworking Call Flow described in following slides Phase 2 -- VCC for support of domain transfer (handoff) between HRPD in the Femto to 1X in the macro network environment Support using TSG-X X.P0042 standard

Femtocell Architecture HA AAA Femto OA&M BSR Femto Router/ Modem Private IP Network Femto Network Gateway DSL or Cable Network IMS Core Femto Network Macro Network HRPD RNC PSTN 3G-1X MSC HLR SMS- GW

Short Message Service (SMS) Interworking Mobile Originated SMS UE1 Femto IMS CN HSS SMS-GW Mobile Originated Short Message Service (MO SMS) from UE1 (M1) Data Burst Message (DBM) (M2) SIP MESSAGE (M3) SIP MESSAGE (M4) SIP 202 ACCEPTED (M5) SIP 202 ACCEPTED (M6) SIP MESSAGE (Delivery Ack) (M7) SIP MESSAGE (Delivery Ack) (M8) Data Burst Message (DBM) (Delivery Ack) (M9) SIP 200 OK (M10) SIP 200 OK Alcatel – Lucent Proprietary Alcatel – Lucent Proprietary

Short Message Service (SMS) Interworking Mobile Terminated SMS UE1 Femto IMS CN HSS SMS-GW Mobile Terminated Short Message Service (MT SMS) delivery for UE1 (M1) UDR (M2) UDA (M3) SIP MESSAGE (M4) SIP MESSAGE (M5) Data Burst Message (DBM) (M6) SIP 200 OK (M7) SIP 200 OK Alcatel – Lucent Proprietary Alcatel – Lucent Proprietary

Call Hold Without Announcement UE1 Femto P-CSCF S-CSCF AS UE2 (M1) Flash message (M2) ReINVITE (sendonly) (M3) (M4) AS determines no announcement will be played (M5) (M6) (M7) (M8) 200 OK (recvonly) (M9) (M10) (M11) (M12) (M13) (M14) ACK (M15) (M16) (M17) (M18) (M19) Stable call in talk state between UE1 (3G-1X UE accessing a Femto) and UE2 (IMS compliant UE) Alcatel – Lucent Proprietary Alcatel – Lucent Proprietary