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HD Voice: some lessons and perspectives


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Orange service provider vision for implementation of the HD Voice. Presented during IMTC 20th Anniversary Forum in Porto, Portugal

Orange service provider vision for implementation of the HD Voice. Presented during IMTC 20th Anniversary Forum in Porto, Portugal

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  • 1. HD Voice: some lessons and perspectives. October 2013 Hear Better – Feel Closer
  • 2. HD Voice over mobile in a nutshell What is HD Voice? Three factors Basic technical components • Wide band speech [50 Hz / 7 kHz] • Clarity, comfort, presence • To enhance Voice value • Network: QoS and transparency • Device: Acoustics, Noise reduction • Communication: « make it known » • Wide band codec: AMR-WB, EVRC-NW • Network: IP transport, TrFO • Acoustics requirements from GSMA / 3GPP, noise reduction
  • 3. HD Voice is a worldwide reality Over 85 HD mobile networks • More than 60 countries source GSA: Over 200 device models • Generalized over smartphones Customer base: 100 millions (estimation eof 2013) One logo defined by GSMA • One recognized symbol for mobile (3GPP, 3GPP2) and fixed (CAT-iq). • Guaranteed quality  technical requirements (network and devices). • Supported by 45 companies
  • 4. When aware, customer opinion is very positive  Sources – Orange France FUT (July 2010): 33 couples of testers ( ) – Orange Moldova Consumer survey (April 2011): 102 Orange Moldova HD customers – Orange Romania Consumer survey (Feb. 2012): 500 Orange Romania HD « aware » customers HD Voice customers are very satisfied by the service • Is HD call Quality better than before? Yes: 89% (France) • Are you satisfied with HD Voice? Yes 81% (No: 4%) (Romania) Aware customers expect HD Voice (France) • Is HD Voice - as tested - an evolution that you expect from your operator ? Yes 92% • Are you ready to change your mobile to benefit from HD Voice? Yes 76% HD Voice has a positive impact on brand and on loyalty • Since using HD Voice, your opinion of Orange network is Better 56% - Worse 2% • To what extent does HD encourage you to stay with Orange? Yes 73% - No 25%
  • 5. HD voice boosts monthly usage Increased Voice Usage • Customers switching to a non HD Voice handset voice usage increase +2,8 % • Customers switching to a HD Voice handset (right) increase +5,6 %  gap of about +3% Observed in other European countries Spain : +3,8% Belgium : +4% Romania : +2,1% Moldova : +2,7% • Monthly voice usage (incoming and outgoing calls) of Orange France customers switching to a handset in early 2012. • Observed, 6 months prior to the switch and 6 months after the switch
  • 6. • Today, to fully benefit from HD: be under 3G + call another HD customer of the same PLMN being too under 3G  Today, HD  10% of HD customer calls Stake: increase HD call occurrence Increase HD call occurence • Widen the HD Voice device portfolio • Extend to other networks (2G, VoLTE) • Connect « HD islands » through interoperability. HD call probability evolution - example Time Proba x 2
  • 7. HD voice levers to be regionally adapted HD Voice device portfolio - Smartphone: generalized support in progress. - HD over feature phones is key for emergent markets. HD interoperability - The key factor - National / int’l interop • First HD connexions direct or by hubs • Made easier as standardized (SIP / SIP-i, AMR-WB) • Roadmap driven by IP to IP interco. Mobile sales (million units) Extension over 2G - HD call occurrence - Continuity when 3G / 2G handover • Depending on country network profiles • RAN evolution to IP interface with CN • Support over dual mode devices to generalize. source: Yankee Group
  • 8. HD Voice over VoLTE • GSMA IR 92 (IMS Profile for Voice): AMR-WB. • Device requirements under definition by 3GPP R12 • HD logo for VoLTE to be considered at GSMA. • Device impact (jitter buffer, a-synchronism…) • Handover LTE to 3G (SRVCC) • VoLTE / 3G HD interop (benefit from installed basis) • AMR-WB @ 23.85 kbps (non speech signals, conf.) • Communication about HD Voice at VoLTE launch • Super HD thanks to EVS codec by 3GPP HD VoLTE already exists HD VoLTE is specified … and opportunities to exploit • First launches in Korea (SKT, LG U+, KT) • Still some points to pay attention
  • 9. As a conclusion, four wishes: • HD Voice support over feature phones • Bridges built between HD islands • A still magnified audio user experience in VoLTE • HD Voice logo commonly used and recognized