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Contains U.S. Cellular® confidential information. Not for external use or disclosure without proper authorization.
Benefits of VoLTE/RCS to Carriers and Subscribers
Quan Choi
Sr. ManagerProduct Strategy
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IMS platform IMS platform
Enhanced Address Book
•Picture/ Portrait•Link•Status text•Availability•Location Information•Time zone
Enhanced Address Book
•Picture/ Portrait•Link•Status text•Availability•Location Information•Time zone
Voice and Video
•VoLTE (with lower latency)•HD Voice•IP Video Call •Video Conferencing•Video Messaging/Video VM
Voice and Video
•VoLTE (with lower latency)•HD Voice•IP Video Call •Video Conferencing•Video Messaging/Video VM
Messaging
•SMS• MMS
Messaging
•SMS• MMS
Chat
•1:1 chat•Group chat
Chat
•1:1 chat•Group chat
Content Sharing
•Video sharing• picture sharing•File transfer•Location sharing
Content Sharing
•Video sharing• picture sharing•File transfer•Location sharing
What is RCS?• Rich Communication Services (RCS), provides Mobile
Network Operators with a means of transitioning circuit services (voice and SMS) into an all-IP and LTE world
• Latest version of RCS is Release 5.1, bringing in support for IP Voice, IP Video, and Location Sharing
• Voice over LTE (VoLTE) is an RCS service• Enabled by an IMS platform
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Challenges in Implementing VoLTE
SRVCCEmergency services Service Continuity
Complexity
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Emergency/Regulatory Services
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Voice Call Continuity
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Service Continuity
• AT&T Fine Print– “The following features/services are currently
incompatible with HD Voice service: prepaid service, Smart Limits, Ringback Tones, and OfficeDirect and OfficeReach (for business customers).”
• Other services that may differ between IMS and legacy network– Conference calling (number of connections could
vary)– Video calling and conferencing– Other enhanced messaging services– Simultaneous voice and LTE
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Why not VoIP over LTE?
Features on the device and RAN
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VoLTE Status on Tier-1 Carriers in North America
• VoLTE Launched nationwide in September 2014
• Supported on GS5, LG G2, and iPhone 6
• Part of their Advanced Calling 1.0, with VoLTE and video calling (except on the iPhone)
• No SRVCC
• Move off of CDMA ASAP
• VoLTE launch in May 23, 2014 with HD Voice 3 in limited market with one device
• Support SRVCC
• Video calling support likely to follow Verizon in 2014.
• Other RCS feature, such as enhanced messaging to follow
• Expect VoLTE launch in 2015, market by market
• Currently support HD voice through 1x-advanced
• Very limited deployment
• RCS support via Jibe in 2014
• VoLTE launch in May 22, 2014, with HD voice, completed national deployment in July – Currently, four devices supported
• Support SRVCC
• They will likely continue to support “Joyn-like” RCS services, but will deploy full RCS services such as video and enhanced messaging
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Benefits to Carriers
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Customer Benefits
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Real Benefits to Carriers
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End state for VoLTE
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Thank You