VoLTE: Using Policy to Add Quality to HD Voice

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This webinar discuss various operator launches and the importance of ensuring quality for HD voice.

Learn more at https://www.openet.com/what-we-do/efficient-operations/voice-over-lte-volte

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VoLTE: Using Policy to Add Quality to HD Voice

  1. 1. 1 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only Openet Webinar VoLTE: Using Policy to Add Quality to HD Voice Bart Lehane Policy Product Manager
  2. 2. 2 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • LTE, HD Voice market summary • VoLTE – Market context and operator impact • VoLTE – Subscriber impacts • Sample deployments • Considerations in designing a network to deliver VoLTE • Policy management impacts • Summary Agenda
  3. 3. 3 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only LTE Growing, HD Voice Growing LTE Live Networks HD Voice Live Networks © Global mobile Suppliers Association (GSA)
  4. 4. 4 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • South Korean mobile ARPU across operators has grown at a 2% CAGR from Q2 2012 to Q3 2013 • SK Telecom LTE customers now spend on average 1.4x more than a non LTE user or $6 per month • LTE Penetration 53% LTE driving proven ARPU gains
  5. 5. 5 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only VoLTE Market Context LTE & HD Voice deployments advancing CS voice calls spectrally inefficient Penetration of VoLTE handsets low Replacing 1st Gen PCRF for VoLTE Catalyst for Change in Charging Systems At the end of 2013 there were 126m LTE subscribers with Infonetics predicting that this will rise to 2bn by 2017. HD Voice also becoming commonplace Providing data services on one network and voice services on older circuit switched networks, may not make best use of scarce resources VoLTE enabled smartphones have been commercially launched in South Korea and USA but availability remains low. AT&T have 1 device currently but this will change A survey by Heavy Reading of 80 operators (June 2013) indicated that over 60% were looking to upgrade or replace their PCRF to handle VoLTE IN systems are struggling to deliver flexibility and have high cost. New services such as VoLTE are causing network operators to evaluate existing charging systems 60%
  6. 6. 6 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only VoLTE Subscriber Impacts Better Call Quality Rapid Call Setup Time Lower power consumption Interactive Services VoLTE ≠ HD Voice LTE networks support QoS scheduling that ensures that voice packets are being transmitted with tightly controlled latency and jitter Calls can be setup in a fraction of the time using VoLTE, again improving the overall voice calling experience LTE technology enables the phone to dramatically reduce power consumption during inactive periods reducing power consumption 40% vs. 3G Messaging, video and interactive services can all be used at the same time. For operators, these services are built on the same VoLTE infrastructure VoLTE will not form part of customer messaging. Operators are using HD & Clear Voice branding to message this to their subscribers
  7. 7. 7 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only VoLTE Operator Roadmap • Improve voice quality • Shorten call setup time • Improve innovation image • Platform for competing with OTT • Build new services on existing VoLTE architecture • Video Calling, Advanced Messaging, Advanced Voice Services • Reduce CS dependency • Remove CS Network infrastructure • Reuse old Voice/SMS Spectrum for data services Short Term Medium Term Long Term
  8. 8. 8 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • AT&T launched HD Voice based on their all-IP 4G LTE network in 4 markets in May: • Illinois, Wisconsin, Indiana & Minnesota • The launch strategy is based on 3 main customer benefits: • Crisp call quality • Less background noise • Simultaneous voice and data at 4G LTE speeds • Currently AT&T have 1 VoLTE enabled handset the Samsung Galaxy S4 mini VoLTE Launches
  9. 9. 9 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • SK Telecom see VoLTE as an opportunity to better compete with OTT and VoIP services and deliver a superior voice service for customers. • Able to handle 2.2 times wider frequency bandwidth as 3G voice • Faster call setup times which range from 0.25 to 2.5 seconds on LTE, compared with a five second setup time on 3G • 4.5m active users at Q2 2013 • LG U+ call success rates on 100% LTE is as high as 99.89 percent” • DoCoMo will launch high-quality voice and video calls using Voice-over-LTE (VoLTE) technology in late June VoLTE Launches
  10. 10. 10 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only VoLTE and Policy Management
  11. 11. 11 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • In order to deliver VoLTE, the policy management system (PCRF) needs to dynamically manage mobile resources associated with each VoLTE call. • PCRF sits in between the IMS layer and the data-plane nodes • It ensures the correct call quality is applied • Defines the QoS to be set on the P-GW • Creates the dedicated bearer that carries voice traffic • Guaranteed bit-rate for voice data VoLTE – The Role of the PCRF
  12. 12. 12 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • VoLTE requires co-ordination across policy & charging control elements to define dedicated voice QoS with flexible charging to zero rate VoLTE control traffic, support legacy voice tariffs and new flexible bundled propositions. • PCRF also delivers a number of other functions • Setting up early media • Multimedia priority services • IMS Emergency services • Network location reporting • VoLTE roaming • .... VoLTE – The Role of the PCRF
  13. 13. 13 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • As many existing policy systems will need to be upgraded (or replaced) for VoLTE, a VoLTE policy manager can be deployed as adjunct to current PCRF to handle all IMS traffic. • Standalone PCRF Vs Combined PCRF Considerations in Deploying VoLTE • Standards compliant (3GPP and GSMA VoLTE) solution with flexibility to adapt to different interfaces
  14. 14. 14 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • Scalability • How predictable are signalling rates for VoLTE? • >1M TPS? • Reliability • Voice call traffic failing is highly undesirable • Charging impacts • Catalyst for evaluating existing charging system • Can IN systems deliver flexibility? Considerations in Deploying VoLTE
  15. 15. 15 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • LTE- massive mobile industry success story, VoLTE– emerging technology • Successful roll outs are being followed with an increasing number of deployments and trials in progress • Externally, the main marketing messages are improved call quality, simultaneous voice and data usage & reduced call set up times • Internally VoLTE is providing a catalyst for change as well as a migration path towards long term CapEx and OpEx savings • Policy management (PCRF) essential for successful VoLTE rollout at it ensures dedicated QoS on every VoLTE call • Many considerations in designing VoLTE network Summing Up
  16. 16. 16 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only • Openet Policy Manager – Enabling VoLTE through PCRF • Long standing VoLTE Capability • Proven integration with numerous IMS and Packet Core components • Stability and reliability required for voice traffic • Standalone and combined modes supported • Hugely scalable • Sample deployment architected for 1.1 M TPS • Functionality for the next phase of IMS applications • Charging evolution • Openet IN Replacement solution enables migration away from legacy charging systems Openet & VoLTE
  17. 17. 17 © Copyright 2014 Openet – Company Confidential For Use Under Non-Disclosure Only Thank you Any questions please submit to info@openet.com

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