Wi-Fi Calling Overview

Transcription

1 Wi-Fi Calling Overview Opportunities and challenges towards 5G v1

2 Agenda 1. About WBA 2. WBA Work Item - Wi-Fi Calling 3. Broaden Wi-Fi Calling Support 4. Technology Options 5. Wi-Fi Calling and Path towards 5G 6. Challenges 7. Engaging with the WBA

3 About the Wireless Broadband Alliance (WBA) WBA is the leading organization to champion the Development of the Converged Wireless Broadband Ecosystem Founded in 2003 by a unique mix of Wi-Fi, mobile & broadband operators who viewed public Wi-Fi as a strategic complement to their mobile and fixed broadband network(s) WBA will continue to drive and support the adoption of Next Generation wireless services with coexistence and convergence of unlicensed and licensed networks across the entire public Wi-Fi ecosystem, including IoT, Big Data, Converged Services, Smart Cities, 5G, etc.

4 Delivering our Vision WBA Programs OPEN INVITATION TO ECOSYSTEM PARTNERS

5 Diverse Membership Across the Wireless Ecosystem Board Members Operator Members Technology Providers Information as of September 2016

6 Connected City Advisory Board (CCAB) - Members The membership of the Connected City Advisory Board (CCAB) consists of a select group of City CIOs and senior city and government officials along with invited industry experts and members of the WBA Board directors. Non-exhaustive

7 WBA Work Item - Wi-Fi Calling What s Wi-Fi Calling? What s driving Wi-Fi calling? What are the opportunities for operators? Wi-Fi Calling use cases, business and functional requirements Wi-Fi Calling architecture and various solutions deployed Wi-Fi Calling challenges and remedies Looking ahead More info on WBA

8 Broaden Wi-Fi Calling Support Global support and momentum: All major handset OS support All major handsets support Many operators around the world are already or planning to support Hundreds of millions of VoWiFi calls are already going thru Wi-Fi networks 80% of mobile calls takes place indoors where Wi-Fi available Addresses key indoor coverage issue for the operators in cost affective way Extends the operators network without them actually deploying and operating them Opening

9 Why users like it and how they switch back from OTT apps to MNO bs IMS

10 Wi-Fi Calling Opportunities VoWiFi allows operators to offer a Universal Wireless Service anywhere around the world where users have access to Wi-Fi Wi-Fi APs + Hotspot 2.0 = in neutral host allows operators to provide access to mobile core from anywhere in the world - MulteFire and Neutral Host are trying to emulate It literally turns APs into potential cellular towers and extends operators networks instantly without operators themselves deploying and operating them. Hundreds of millions of Wi-Fi APs around the world. Wi-Fi Calling is going mainstream all around the world. It is no longer a question of if operators will deploy it, but when they are deploying it, and its growth and momentum will continue in the coming years.

11 Encouraging Market Momentum for Wi-Fi Calling Deep Indoor Coverage Increased Loyalty HD Audio, low Post- Dialling Delay Conferencing, WebRTC apps VoWiFi Minutes of Use to Exceed VoLTE by 2018 VoWiFi Accounts for 53% of Mobile IP Voice by 2019

12 Types of Wi-Fi Calling Applications

13 Overview of the 3GPP IP-based Mobile Network with Wi-Fi access

14 An inside-out view on Carrier Wi-Fi 3. Other Wi-Fi IPSec barred by corporate firewalls or local authorities UE 2. Untrusted Wi-Fi Ubiquitous Access to My Operator IPSec 1. Trusted Wi-Fi epdg TWAG An Operator SSID with QoS boundary for IP address continuity and hybrid access 3G/LTE Small Cells Wi-Fi Calling over Trusted and Untrusted access networks

15 Architecture for IMS on 3GPP network and interworking WLAN 3GPP R12 TS / Evolved Packet Core architecture (EPC)

16 Apple ios9 VoLTE and Native Wi-Fi Calling via the IMS APN! VMSC Sv MGW IMS with SRVCC E-UTRAN S1-MME MME S1-U S11 EPC S3 S12 OCS, PCRF,... S6a DNS VoLTE UA UTRAN GERAN Gb IuPS SGSN S4 SGW IMS APN S5/S8 PGW PDN UE IPSec Untrusted Wi-Fi SWu SWn epdg Gr/S6d S2b UE IP address continuity! no impact on IMS IMS APN Trusted Wi-Fi SWw SWm TWAG S2a AAA Proxy/Server S6b SWx HSS HLR

17 Android 4.2+ Native VoIP Calling via the Data APN Ater IuCS VMSC MGW Native VoIP Calling E-UTRAN S6a S1-MME MME UE IP address S1-U SGd S11 DNS continuity! no impact on IMS S3 S12 EPC OCS, PCRF,... Native Calling UA UTRAN GERAN Gb IuPS SGSN S4 SGW Data APN S5/S8 PGW SGi PDN UE Gd Gr/S6d Untrusted Wi-Fi SWn epdg Certificate-based auth (EAP-TLS/IKE) S2b Data APN Trusted Wi-Fi SWw SWm STa TWAG S2a AAA Proxy/Server S6b SWx Data APN C S6c HSS HLR SMSC

18 Wi-Fi Calling : an opportunity to introduce a virtualized epdg/ PGW VPN-PDG Protects P- CSCF and Provides Session Continuity Non-native Wi-Fi Calling Application IP-layer Call Anchor

19 Handover capabilities Handover procedure between Wi-Fi Calling, Voice over LTE and 2G/3G Circuit-Switched domain

20 Example of a complete Wi-Fi Calling Solution Mobility Configure and Monitor Enable and configure Trusted Wi-Fi on the UE Enable and configure Untrusted Access to epdg Enable and configure VOIP Monitor customer experience and end-to-end service proactively Motive Universal Device Manager & Service Management Platform Wi-Fi Calling solution Authenticate and Secure SIM, Certificate or Username/Password/MAC Trusted and Untrusted Wi-Fi access Registration to IMS with AKA authentication AAA Server for the epdg and/or TWAG IMS CSCF, TAS, SCC AS, HSS, IBCF, MGCF, MGW, BGW Untrusted & Trusted Access Points Connect, Handover, Prioritize Connect WiFi user to the IMS not just to Public Internet Preserve Data and IMS services during handover to/from 2G/3G/4G WLAN GW, MG epdg, PGW and vmg with HA IMS with TAS (MMTEL AS) and SCG (VCC AS) Source: Nokia

21 Technical Key Takeaways 1. Consider 3 types of User Agents / Device implementations 2. Open up the IMS via any IP network : Trusted Wi-Fi, Untrusted Wi-Fi via epdg, or direct TLS to IMS P-CSCF Wi-Fi Calling Solution 4. Activate & Support with Mobile Device Manager and Entitlements Server 3. Virtualize epdg, AAA and PGW for the IMS APN

22 What s next Features to include

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24 WBA work streams on Converged Services Context WBA BoD and general members defined on its vision 2020 that converged services are key to further develop and promote adoption of new technologies Policy Wi-Fi Calling Current Work Streams Convergence of Cellular and NGH networks Policy guidelines: Policy is becoming a key tool for operators to manage networks and deliver the best experience possible to their customers This project consists in a white paper to facilitate the understanding and identify challenges that operators face to implement solutions for policy, particularly integrating 3GPP ANDSF & Passpoint Release 2 Wi-Fi Calling The workgroup is looking into Wi-Fi calling opportunities in the industry and producing a guidelines document that will help the ecosystem. Current work involves standardization of an end-to-end system, commercial trials and certification Expected Deliverables Influence the industry on the forefront of converged services assessments Increase time-tomarket, industry consensus

25 Wi-Fi Calling and Path towards 5G VoWiFi complements VoLTE Re-uses the same stack in mobile device Re-uses the same IMS core for VoLTE Supports seamless handover VoWiFi<>VoLTE VoWiFi extends VoLTE reach at a relatively low marginal cost VoLTE is to ramp up from 185M by the end of 2015 to 1B by 2020 and it will further propel VoWiFi Convergence is the key for 5G VoWiFi is a prime example of convergence of services Users are able to make and receive calls using native dialer, address book, and texting over the same IMS core transparently and access network agnostic way, which will be a key in 5G world. VoWiFi has moved from novelty to necessity and will be a key component of 5G for delivering converged services over any access networks

26 Challenges Number of gap items and issues that need to be addressed to further help and promote the deployment and usage of Wi-Fi Calling including: Current deployments are trying to do their best with what is available today Lack of end-to-end standard based system specification and solutions for addressing issues: Emergency Call Network Access without credentials, location, emergency number, routing, and priority of traffic Regulatory issues Roaming, access, legal intercept QoE/QoS End-to-end QoE and QoS, handling of QoS packet Seamless handover between 2/3G calls and VoWiFi Interruptions in multi AP environment with network detection, selection, authentication and latencies Enterprise blockage of IPSec tunnels to external peers

27 Next Steps for WBA Initiating work items to: Develop end-to-end Wi-Fi Calling specifications, standards, certifications and trials Help the industry in delivering a scalable, reliable and standardsbased solution Improve Wi-Fi Calling service enablement and usage, and help Wi-Fi Calling to have a service equivalency of its counterpart VoLTE

28 Download WBA Wi-Fi Calling Opportunities and Challenges towards 5G Thank you WBA PMO Bruno Tomas Senior Manager With the support of Dr. Necati Canpolat from Intel (WBA Wi-Fi Calling Project Leader) More info on WBA