Transcript X30-20060911-017 PSN TEF charts for Brazil Workshop

TSG-X PSN Evolution
cdma2000® Brazil Workshop
25 October 2006
Le Meridien Copacabana
Rio De Janeiro, Brazil
PSN Evolution
• PSN began evolution discussions upon formation of SCATE ad hoc
• Separate technical report aligning with SC-ATE began
in Feb. 2006 in order to focus discussions at a more
detailed level:
– Radio Access Network
– IP Gateway
– Core Network
• Key Issues align with SC-ATE
– PSN focus is at a more detailed level
Aug 09, 2006
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PSN Evolution
• Objectives
– Identification of
• new technological and market demands on the network
• architectural improvements
• evolving technologies that may enable architectural change
that was previously not possible or practical
– Proposal for Evolved Architecture
• Including Radio Access Network and Packet Switched Network
• Addressing IMS architecture only inasmuch as needed to interwork
Aug 09, 2006
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PSN Evolution
What is Driving the Need for Change
– Increased need to support real-time services over the
packet data network
• Migration of circuit services to the packet data network
• QoS requirements for highly delay sensitive applications
• Need for low overhead over the transport network as well
as over the air
– Support of multiple access technologies
• Inter-technology roaming
• Inter-technology mobility
– Seamless service mobility
Aug 09, 2006
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PSN Evolution
• The PSN Technical Evolution Framework (TEF) focuses on the
Packet Switched Network with emphasis on:
– Access Independence in the Packet Switched Network
• Isolation of Access Specific functions
– Transport Efficiency
– Flexibility
• Architectural Considerations include examination of
– Evolving network topologies
• Must support the delivery of services across both hierarchical and flat
topologies, including a mixture of both
– Evolving technologies, including access, backhaul, etc.
• Must accommodate both the legacy style point-to-point backhaul as well as a
connectionless network in the RAN
• Subscribers will require access to the same services regardless of the access
technology being used
– Functional Decomposition of the packet data network
• Which functions can be access independent
Aug 09, 2006
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PSN Evolution
• Challenges
– Decomposing Existing Functions in the Network
– Creating a division between Access-Independent and AccessSpecific Functions
• Alignment of Access-Independent Functions across SDOs
• Aligning with the direction of other SDOs in order to facilitate accessindependence
– Maximizing advantages of advancements in transport
technologies while providing flexibility in the access network
Aug 09, 2006
DRAFT
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