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Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 1 “Giving Voice to 4G” Gartner Dataquest Akshay Sharma Research Director Feb Option 2. Intro Title Page
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 2 Panel Akshay Sharma (Moderator) Research Director - Carrier Network Infrastructure, Converged Infrastructure Gartner Kevin Mitchell Director, Solutions Marketing Acme Packet Jeff Thompson CEO Towerstream Payam Maveddat Vice President of PLM and Marketing Mavenir Systems, Inc.
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 3 Comments In the US: both AT&T and Verizon own parts of the 700 Mhz spectrum and have committed to LTE. According to: Verizon will deploy a Femtocell LTE trial by year end, “We expect that LTE will actually be in service somewhere here in the U.S. probably this time next year,” said Dick Lynch, executive vice president and chief technology officer of Verizon Communications “Dick Lynch CLEAR – Xohm – ClearWire: VoIP over WiMAX Light Reading - VOIP - Clearwire Breaks Into VOIP Market - Telecom... Jan 22, Using Nortel servers, Clearwire is now offering VOIP services over its own network infrastructure.
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 4 Issues with VoIP over Mobile WiMAX? Mobile WiMAX supports a Break-then-Make handoff approach. Make-Before-Break is optional QoS metrics are granular. SLA, Quality of Experience metrics at the end-2-end App-level needed Inter-ASN roaming needs definition What about roaming across Carrier-managed Spectrum and Enterprise-managed Unlicensed Spectrum ? Devices ? Now Nortel, ALU have slowed R&D Coverage / Capacity / etc.
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 5 But VoIP over Fixed WiMAX is Good
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 6 VoIP IMS ?
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 7 VoIP Peering Partner’s Network Wholesale Customers PSTN Access Network #1 Access Network #2 UE Subscribers to Verizon IMS-based Services Verizon IP/MPLS Network Session Management Transit Routing Decomposed Access Functions Decomposed Access Functions Decomposed Access Functions MGCF IM-MGW Network Routing Subscriber Data UE Verizon IMS Architecture IMS “Core” Shared Media Resources Shared Billing Services Network Policy Policy and QoS Control Subscriber Data AS Subscriber Data AS Subscriber Data AS Subscriber Data AS … Service Orchestration
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 8 Newer Opportunities for LTE and IMS Sector Peak Data Rate HSPA+LTE 5MHz 11Mbps22Mbps 5MHz R.7 22/28Mbps R.8 42Mbps 43Mbps 20MHz NA86Mbps 20MHz NA173Mbps LTE has functions such as: The MME (Mobility Management Entity) supporting intra-RAN mobility and handovers. IMS supports the VCC supporting seamless handoffs across access methods such as WiFi, 2G, 3G, and fixed access. with likely sporadic LTE deployments, the IMS VCC supporting seamless handoffs to WiFi, 2G, and 3G radio access networks is likely required
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 9 Newer Opportunities for LTE and IMS LTE has functions such as: LTE has defined the Serving Gateway (S-GW) and the PDN Gateway (P- GW). The S-GW and P-GW are core network functions for the LTE Radio Access Network based access. They both act as the Policy Enforcement Points (PEP) for dynamic QoS and policies. IMS supports a Policy Decision Function (PDF) which can be within the CSCF that manages the QoS over the media plane, whereby IMS supports the Common Open Policy Service (COPS) protocol for policy control over Quality of Service (QoS) signaling protocols. LTE supports both the S-GW and P-GW having Diameter interfaces to control the Policy and Charging Enforcement Function (PCEF) within the S-GW and P-GW functions. IMS supports the Diameter interface as well.
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 10 Newer Opportunities for LTE/WiMAX and IMS LTE/WiMAX will require regulatory features such as Legal Intercept and Emergency Services for multimedia in both the wireless and wireline space, along with Mobile IP solutions (Foreign Agent and Home Agent) LTE/WiMAX will require carrier hosted solutions that promise future convergence with VoIP, IPTV, with Presence and Location-based services, which IMS: IP Multimedia Subsystems coupled with applications servers can provide. Additionally LTE/WiMAX will require the following which are provided by IMS applications servers: ENUM User authentication Peer-to-peer video sharing Voice call continuityVoice call continuity to alternate access methods Push to talk Rich Communication Suite
Entire contents © 2009 Gartner, Inc. All rights reserved. | Page 11 Panel Questions -What are the architecture and infrastructure choices for incumbent and greenfield mobile operators for voice services? -Where should service providers locate session-oriented service delivery intelligence and control—in the core or the edge? What’s right and wrong about each approach? -What are the requirements for secure and interoperable wireless services? Does IMS deliver all that's necessary? What additional issues must be considered for FMC and blended wireless-wireline access networks? -What are the optimal technology choices relative to product availability, cost, functionality and scalability in terms of performance and capacity?
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