5G World 2016 VoLTE Roaming: an opportunity for new business models Cédric Bonnet - Orange London June 30 th, 2016
VoLTE Roaming: an opportunity for new business models 1 2 S8HR: a false good idea LBO with no MTR: a business evolution proposal
S8HR: a false good idea
VoLTE Roaming: the 2 main models in a nutshell: Voice (LBO) or Data (S8HR) oriented Local Breakout (LBO) Standardized and enhanced since 2010 Visited network is service aware (voice oriented) 2 routing possibilities (Visited Routing or Home Routing) Same business model as Circuit Switch Voice Concerns on complexity to deploy S8HR VPMN Voice Introduced by GSMA in 2014 Still under 3GPP normalization (until 2017) Visited network is a bit pipe (data oriented) Technical concerns on local services and lawful obligations Business concerns on value deflation Carrier (IPX) Voice HPMN
Voice Operator vs. Voice OTT Operators OTT Universal- Interoperable QoS Chargeable Backward compatibility LBO Community Best effort Free Standalone S8HR Value deflation Quality deflation Service deflation
S8HR: complexity and costs to come Based on 3GPP T3 23.749 and TR 33.827 outputs Retail Charging Voice Continuity Emergency Calls Lawful interceptions New /PCC procedures Impacts on P-CSCF and PCRF No support of esrvcc Lots of IOT tests to achieve Impacts on VPMN and HPMN Impacts on UE and procedures IPSec to be deactivated at Virtual P-CSCF to add in VPMN
Common mistakes about VoLTE Roaming «LBO = RAVEL»: FALSE 2 variants, Home Routing and Visited Routing: using one architecture or the other is under HPMN decision and on a Call by Call basis. You can even start without deploying the VPMN loopback (RAVEL) In S8HR, however, you ll never have the choice. «With LBO HPMN do not control its customers»: FALSE Whatever the chosen architecture (S8HR, LBO HR, LBO VR), the HPMN handles the call control. S-CSCF and AS (for services) are ALWAYS located in the HPMN! «With LBO, you need to use VPMN»: PARTIALLY FALSE Only the edge equipment (P-CSCF) is triggered in the VPMN. The other equipment, that have difficult integration with devices (S- CSCF, HSS, TAS ) remain in the HPMN.
Conclusion S8HR was a false good idea S8HR would have been a good idea for voice OTT services in Roaming Operators are not OTTs: Complexity and costs would come with S8HR! Moving to OTT services may lead OTT to come on operator services! LBO has been designed to meet both operators and customer expectations
LBO with no MTR: a business evolution proposal
Let s discuss the business model of the interconnection between VPMN and HPMN for roaming VoLTE (LBO case) Data oriented model (S8HR) Voice Service oriented model (LBO) HOME MNO EPC Data Roaming Interco HOME MNO Roaming Signaling + media Interco HOME MNO Roaming Signaling Interco NNI Scope Visited MNO EPC S8 Visited MNO EPC Visited MNO EPC Interco S8 Home Routing LBO Home Routing LBO Visited Routing
Technically, Roaming and interconnection are SIP based (-NNI) but with some specifies Roaming service Visited Interconnection service A Sender SIP Proxy IPX SIP Proxy IPX Home B Receiver Service Roaming Interco Technical Differences Registration SMS Only SIP (no Media) for LBO/VR ENUM (NP and user profile) Voice Breakout to legacy (if B user is not )
Proposal: remove MTR cascaded model for VoLTE roaming traffic (LBO) Challenges Proposal High coupling between roaming and interconnection Complex Roaming IoT, depending on interconnection cost Remove MTR cascaded model for roaming traffic between Visited and home (for MOC/MTC) SIP/media exchanged between visited and home will be transported by carrier with a signaling model Able to charge roaming terminating calls in roaming IoT using TAP (instead of MTR) Valid for LBO/HR (sig/media on NNI) and LBO/VR (only sig on NNI)
Future Today Interconnection for roaming VoLTE should be a technical enabler using signaling Voice Technology Roaming Wholesale Interconnection Wholesale for roaming traffic Voice (Circuit) VoLTE (LBO) VoLTE (LBO) Mobile Terminating Rate MINs Minutes Visited Home Mobile Terminating Rate MINs Minutes Visited Home OR SIG Minutes Visited Home SIP signaling In any case, non-roaming Voice Interconnection between operators remains on per minute basis!
Future Today Proposal is consistent with SMS business model Technology Roaming Wholesale Interconnection Wholesale for roaming traffic SS7 signaling SMS Nbr SMS Visited SIG Home SMSo (LBO) Nbr SMS Visited SIG SIP signaling Home Non-roaming SMS Interconnection between operators still remain on per message basis!
Conclusion LBO with no MTR: An opportunity to ease wholesale and retail offers VoLTE Roaming (LBO) brings a new dedicated interconnection leg, that didn t exist in legacy networks. There is an opportunity to define simplified business models. The proposal is to consider VoLTE Roaming as a Signaling interconnection rather than a cascaded MTR interface with no impact on the classic non-roaming interconnection. Main Benefits: Reduce complexity on the interconnection Consistent wholesale charging principles for LBO and S8HR Allow to develop Roaming retail offers
Fraud Architecture RCS Interconnection LTE MSISDN CAP M2M EU REG LBO 3GPP MAP GSMA I3 MVNO IREG TADIG WIFI ORLCF Alliage SoR GLR Hubbing GRX IPX SHR DATA Voice SMS MMS HLR MSC SGSN GGSN Applet WSMS TAP NRTRDE CRIPP QOS CEC training BEREC MME PCRF E2E SIM Hermes Mercury Saturne 2G 3G 4G I IMEI GPRS SIF SMS control Dual I SMSC ABS HUR CDR SS7 Skill center Prepaid Postpaid Diameter Billing Operation Services DNS Performance Roaming VoLTE Sigtran LBO Flash IP VoIP Apps USIM RAEX IOT SIP ISUP OTA GSM UMTS PLMN VLR ETSI OPEX CAPEX MVNE TCAP HD OLN AMEA EME 2.5G DRF MNP Rin Rout ARP DSP STP IPv4 IPv6 API NOSC hub planning project OMA carrier RFP RFI IT MS MSISDN Camel Charging SBC CTI simbox OCSI MOC MTC wholesale retail ISD NITZ OR RBE PP DCH FCH SCP INAP OCS CFU CF CLI CRBT EPC GMSC VHE GSE ODB PSTN VPN WLAN Thank You!