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3G and WLAN Interworking for Fixed-Mobile Convergence

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3G and WLAN Interworking for Fixed-Mobile Convergence 3G and WLAN Interworking for Fixed-Mobile Convergence Presentation for the CDG Technology Forum on Inter-Technology Networking April 30, 2008, San Francisco Presenter: Rolf de Vegt, [email protected] Qualcomm, Inc. 1 Agenda 1. Context and Introduction 2. Trends and Drivers for 3G/WLAN Interworking 3. Highlights of 3G-WLAN Inter-working Standards and System Architecture 4. Benefits of using 802.11n for WLAN Inter-working 5. Features and Enhancements for Improved 3G WLAN Inter- working 6. Technology Trial Results 7. Conclusions Qualcomm, Inc. 2 1. Context and Introduction • The theme of the conference is Inter-Technology Networking • The purpose of this presentation: – Outline the trends and drivers leading to increased adoption of WLAN – Cellular Interworking – Provide an overview of relevant standards and system architectures – Highlight the benefits of using 802.11n technology – Inform you about key enhancements QC identified for 3G – WLAN Interworking – Share the results of a Field Trial of Qualcomm 3G – WLAN Interworking enhancements. Qualcomm, Inc. 3 2. Trends and Drivers for 3G/WLAN Interworking Qualcomm, Inc. 4 3G/WLAN Interworking for Converged IP Services Operator Controlled Benefits to Customers 3G/WLAN Offering Same Data and Voice Services Across Systems System Selection Transparent to the User Same Authentication/Authorization Seamless Inter-System Handoff Additional Revenue Opportunity Single Mobile Number Improved WLAN AP Configurations Operator Services 3G WLAN Operator Client Qualcomm, Inc. 5 End User Trends US Wireless Voice Minutes Usage Work Other • A third of wireless voice minutes are used 10% 26% either at home or at work Home 24% • Fixed-mobile substitution is a reality – Over 13 million landline phones replaced in Car Source: Yankee Group, 2005 North America by 2007 (iGR, 03/07) 40% • Increasing adoption of VoIP – “Portable” phones and softphones can be used anywhere with an IP connection • Increasing usage of wireless data – Fast growth of 3G data services – Need for converged 3G/WLAN data services Embedded Wireless Notebooks Qualcomm, Inc. 6 Drivers for Wireless Operators Wireless operators entering traditionally “fixed” domains • Coverage – In-building coverage extension – High data rates in poor 3G coverage areas • Reduce Churn – Increase stickiness through custom plans – Enhance corporate plans (e.g. wireless PBX) • Cost Reduction – Minimizes transport costs – Delay network investment to improve capacity • New Services and Revenues – Bundled services – Accelerate wireline substitution – Rich services in poor 3G coverage areas Per minute billing WLAN hotspots standard plan extends “Homezone” Residential flat rate coverage “Homezone” plan Qualcomm, Inc. 7 Drivers for Wireline Operators Wireline and MVNOs operators expanding services beyond the home • Through partnerships, operators can offer mobile services • Reduce Churn – Strengthen product portfolio and brand – Single bill for all services • Cost Reduction – Reduce MoU on partner network – Use own transport network (DSL, Cable) • New Services and Revenues – Become main communications provider – Recapture lost users and minutes to wireline substitution Standard MNO provided mobility services WLAN Residential hotspots VoIP plan extends provides VoIP limited coverage mobility Qualcomm, Inc. 8 Cellular/VoWLAN Dual-mode Handsets A Growing Number of Cellular/VoWLAN dual-mode handsets available – DoCoMo launched Passage Duple service (WCDMA/VoWLAN) at end of 2004 – Orange Unik launched in Oct 06 – T-mobile HotSpot@Home launched in June 2007 – Other service launches include BT, Telecom Italia, Telia Sonera, etc. Qualcomm, Inc. 9 3. Highlights of 3G-WLAN Standards and System Architecture Qualcomm, Inc. 10 Standards Support 3G/WLAN Interworking IMS MMD • Rel-5 and Rel-6 published • Rev-0 and Rev-A published • Rel-7 frozen in Dec’06 • Rev-B will be published Dec’07 • Rel-8 expected to be frozen in 4Q’08 VCC: X.P0042 (Stage-2 and 3) VCC: WiFi VoIP ÅÆ CS • HRPD VoIP Æ 1X-CS • TS 23.206 (Stage-2) and TS 24.206 • WiFi VoIP ÅÆ 1X-CS (Stage-3) as part of Rel-7 • Published by Oct ‘07 UMA GAN • Access to A/Gb Intf (Rel 6/7) Published • Access to Iu Intf (Rel-8) In Progress Approved: • 11a/b/g: power saving optimizations • 11e: QoS and talk time improvement • 11r: Inter-AP handoffs In progress: • 11n: Increased throughput and range • 11u: WLAN / Cellular interworking • 11v: Further standby time improvement Qualcomm, Inc. 11 3G/WLAN Interworking for Packet Data Services • Allows 3G subscribers to use WLAN to access an operator’s packet data services – E.g., rich multimedia to mobile phones and connectivity for laptops at hotspots • Standardized in 3GPP (I-WLAN TS23.234) and 3GPP2 (X.S0028-200) – Authentication and security provided by PDIF and existing AAA – Multimedia Session Continuity (MMSC) to support seamless handoff being defined in 3GPP (Rel-8) and 3GPP2 AAAAAA 3G Packet Data PDG/PDIFPDG/PDIF Service (including Internet) WLAN Access Internet Network Qualcomm, Inc. 12 3G-WLAN Voice Interworking Architecture (3GPP2) VLR MMD/IMS core network: •CSCF: SIP server Abis A •HSS for authentication BSC MSC BSC MSC •Media Gateway: MGW MGCF C BTS Cellular Domain IS-41 HLR/AC Dual mode handset: IS-41 PSTN •Dual RF chains VCCVCC ASAS •IMS client software ISC HSS WLAN Access IMS Domain CSCFCSCF MGCFMGCF PDIFPDIF MGW AP MGW Internet VCC AS: WLAN AP: – Manages mobile reachability info •Air link authentication – Selects access for mobile terminated sessions (UE selects access for mobile originated sessions) •Optimized configurations – Anchors all IMS sessions Qualcomm, Inc. 13 Voice Call Continuity: WLAN-3G Handoff • Mobile decides to handoff from WLAN to 3G • Establish CS call and send signaling to VCC-AS • CS voice connection established to MGW • Tear down WLAN VoIP connection VLR ISUP BSCBSC MSCMSC HLR/AC BTS VCCVCC ASAS HSS SIP CSCFCSCF MGCFMGCF PDIFPDIF MGWMGW Qualcomm, Inc. 14 3G-WLAN Voice Interworking Architecture (3GPP) VCC AS: – Manages mobile reachability info – Selects access for mobile terminated sessions (UE selects access for mobile originated sessions) – Anchors all IMS sessions B VLR Iub Iu-cs RNCRNC MSCMSC C Node-B ISUP MAP HLR/AC Dual mode handset: MAP PSTN •Dual RF chains VCCVCC ASAS •IMS client software SH IMS Domain ISC HSS SH SIP WLAN Access CSCFCSCF MGCFMGCF MEGACO ISUP PDGPDG MGWMGW AP Internet PDG: provides VPN entry into carrier Intranet Qualcomm, Inc. 15 4. Benefits of Using 802.11n for WLAN Interworking Qualcomm, Inc. 16 Introduction to 802.11n • Latest generation of Wi-Fi Technology • Wi-Fi Alliance started certifying interoperability of devices based on Draft 2.0 of the upcoming 802.11n standard in June 2006 • Certification of Approved 802.11n based devices scheduled to start in July 2009 Key Enhancements to Legacy Wi-Fi in 802.11n standard: • Increased Throughput and Range due to the use of MIMO – WFA draft 2.0 testing, tests for 2 Spatial Streams, Standard specifies up to 4 spatial streams, with a max link rate of 600 Mbps • Increased Throughput due to the use of Frame Aggregation Techniques and/or the use of 40MHz channels Up to 5X the Throughput and 2X the Range compared to Legacy Gear Qualcomm, Inc. 17 Key Advantages of 802.11n Home Environment Enterprise and Hot Spot • Whole Home Coverage; a • Plenty of bandwidth to support strong Wi-Fi signal that can data-intensive applications (e.g. blanket the entire home video) and more users • A whole family sharing an • Reach hard-to-cover spots like internet connection on a wide stairwells, corridors, and exterior array of devices without areas with ease degradation • Support more users on a more • Moving HD video and audio efficient WLAN infrastructure streams effortlessly from device • Ability for legacy 802.11a/b/g to devices, throughout the home clients to connect • Best user experience with voice • Reduced CapEx and OpEx for calls, video games and other Hot Spot providers, due to larger multimedia applications coverage areas of APs • Back up large files in a snap Qualcomm, Inc. 18 802.11n Access Points with Legacy Wi-Fi Radios in Mobile Devices 11n AP – Legacy Client • Most WLAN enabled Mobile Devices currently shipping with 802.11a, b or g • Even without 802.11n Radios on the client side, notable Range and Power Consumption Benefits: • Increased Receive Sensitivity at Access Points • Transmit Diversity at Access Point • Higher Data Rates Enabled at any given point • Lower Output Power required of Client Qualcomm, Inc. 19 Benefits of Having 802.11n on Both Sides of the Link • Range Extension for a Single Data Stream due to Support of Space Time Block Coding (STBC) • Higher Throughput and Extended Range for Mobile Devices with Multiple Antennas (1x2 and 2x2 implementations) • Higher Peak data-rates with Spatial Multiplexing: – 2 Spatial Streams: 130 Mbps – 1 Spatial Stream: 65 Mbps – Legacy a/g: 54 Mbps • Higher Throughputs for transfer of large files (Music, Video, Pictures) due to Aggregation Techniques (A-MPDU orA-MSDU) • Range Extension Due to the use of the Legacy Duplicate Mode • Power Safe Features • Increased Overall Network Capacity • 11n will Spur Migration to the 5 GHz band – 5GHz is “cleaner” spectrum; fewer risks for interference – New 802.11n deployments can segregate voice on 5 GHz Qualcomm, Inc. 20 5. Features and Enhancements for Improved 3G – WLAN Interworking Qualcomm, Inc. 21 3G WLAN Interworking Considerations • Robust Handoffs between Networks – Triggers and algorithms for efficient handoff – End-to-end call quality management • Efficient Power Management – Improving
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