US 20090067417A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2009/0067417 A1 Kalavade et al. (43) Pub. Date: Mar. 12, 2009 (54) METHOD AND APPARATUS FOR Publication Classi?cation SUPPORTING SIP/IMS-BASED FEMTOCELLS (51) Int. Cl. H04L 12/66 (2006.01) (75) Inventors: AsaWaree Kalavade, Stow, MA (52) U.S. Cl. ...................................................... .. 370/356 (US); Eric E. Bomarsi, (57) ABSTRACT Northborough, MA (U S); Jonathan A. Morgan, Groton, MA (U S); A femtocell is integrated into a core network so as to securely Lawrence A. Palmer, Harvard, MA and ef?ciently deliver one or more mobile services to an end (Us) user on an existing mobile device over a broadband connec tion. This integration can be into a basic Internet Protocol (IP)-based network, or an IMS-based network. In an illus Correspondence Address: trated embodiment, a femtocell is integrated to a SIP- or FULBRIGHT & JAWORSKI L.L.P IMS-based network using a “convergence” server. The con 2200 ROSS AVENUE, SUITE 2800 vergence server preferably is a SIP-based ?xed mobile con DALLAS, TX 75201-2784 (US) vergence (FMC) application server that provides an all-IP approach to core network integration for femtocells. The (73) Assignee: TATARA SYSTEMS, INC., Acton, convergence server provides a number of hi gh level functions MA (Us) including secure access of an end user mobile device into the core network through the femtocell (which involves authen (21) App1.No.: 12/172,23s ticating the femtocell as well as a speci?c end user mobile device), single number voice and messaging services (by updating an end user’s location to be the femtocell), mobility (22) Filed: Jul. 13, 2008 (to support handover between the femtocell and macro cell networks), delivery of supplementary services (such as call waiting, call hold, caller ID, three-way calling, and the like) Related U.S. Application Data on the femtocell network, and the delivery of new and (60) Provisional application No. 60/949,846, ?led on Jul. advanced services (such as home landline routing, mobile TV, 14, 2007. multimedia downloads and the like). EXISTING MOBILE OPERATOR NETWORK . 602 IP NETWORK . (D SL/CABLE) .3 SOFTSWITCl-I /I\/IGCP TRADITIONAL SOFTSWITCI-I OR 1 EMECKOEELQAPPEPEOIIIEEIZ _____ _._1 Patent Application Publication Mar. 12, 2009 Sheet 1 0f 33 US 2009/0067417 A1 CONVERGENCE SERVER 100 APPLICATION I I ‘ ' AND sELRAvYIEcRE LL EIvIc APPLICATION sERvER It, 55;? I I - I I I F 102 I N ; SEDLIRNY sERvER sEssIDN } i I / CONTRDL/ I ,___ W SECURIW ; LAYER I 3GPP/2 AAA } SERVER I I l I CORE, ACCESS AND IRANSRDRI LAYER DEvIcE LAYER EEA/IIDDELL AP I Patent Application Publication Mar. 12, 2009 Sheet 4 0f 33 US 2009/0067417 A1 SECURiTY 402x SERVER 4,04X 3GPP/2 AAA SERVER | EAP/RADIUS/ i DIAMETER | Wm /il\ 406 HOME BROADBAND NETWORK FIG. 4 500 HLR MS TUNNEL {MW-mm?" f ’ ss-m; mm > > <- SIP REGESYRAHON WWH SECURiTY {E AUTHENT‘CATION FIG. 5 Patent Application Publication Mar. 12, 2009 Sheet 5 0f 33 US 2009/0067417 A1 W26M2 36 mow - VmcEbQqBmwEmZo 02Em2g Mwz3i5w9v2? Q92 gm3n2o%92 Xn192:52 m9zmébw Patent Application Publication Mar. 12, 2009 Sheet 6 0f 33 US 2009/0067417 A1 lllilliilllllllllllliillllilblllillill OK wmmSo:u .ga.as ; H $A55:52 Patent Application Publication Mar. 12, 2009 Sheet 8 0f 33 US 2009/0067417 A1 HSS/ HLR Sh 13-41 W K’ m m m m m m w M w “x! 9.0%‘ i W E VQIP NETWORK g - i ' . ~._.___§'L..§ MESEA GATEWAY/ s . 1 2 SIGNALING E I I ‘ GATEWAY WW 5 :T_?" I_\:/ a‘ h _ w m m m m W m m J 150 SIP SiP/VQIP 9R IMS CORE Patent Application Publication Mar. 12, 2009 Sheet 9 0f 33 US 2009/0067417 A1 @258; gma2ze m28 228%? m@w2m55a5g335g2 %; nmwQEzEEewwww géé?mgw: Uw#2n9:E5w2 53325A QN.@\n\ 6W$$22851 5oE2I0dEd1h<a0:2 555%?“ SEE? g5E2m55 822m%m A @95222m3 k$3w0 cwmdiw J