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What Type of Network Intelligence is Needed in Next Generation Access

Networks and Where?The case for intelligent access

Jasmin Kukavica

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Agenda

NGA business model challenges Fundamental changes in telco service delivery How trends influence on NGA active network

requirements Why network intelligence is needed? What type of network intelligence and where?

Intelligent Service Access The answer for sustainable NGA deployment

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NGA business model challenges

Investments in fiber acces or next generation access (NGA) networks are CAPEX intensive

Current Telco business model Vertical services Flat rate unlimited broadband access Problems with take-up rate Money just from the end customer

Difficult for investors (network providers) to capitalise all the socio-economic benefits of high-speed fiber access networks

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“Dumb Pipe” broadband model

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Over-the-top providers offer more & more services.

Q: What can a network provider do?

Nothing… Sell more bandwidth… Modify business model…

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Change of business model

Fiber access networks will require change of business model based on following simple business ideas:

Percieved value of different services and applications (which run on high speed broadband network) is different to different customers

-> Network intelligence for QoS differentiation and charging of services per customer based on her/his priorities

Value of network is higher with more customers and services running on it

-> Shared investments, wholesale, open broadband networks, “virtualisation of networks”

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Telco world is changing on several layers

VoIPInternet

IPTV

Se

rvic

e N

etw

ork

Inte

rnet

IPT

V

Vo

IP

IP/E

the

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tC

us

tom

er

Sm@rt phones

Tablets

Media TV /NTB

Ser

vice

s/A

pp

lica

tio

ns

Inte

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t

Co

nte

nt

Pro

vid

ers

Te

lco

s

erv

ice

s

(L2 wholesale)

Network ProviderEth

ern

et

Cu

sto

mer

IP s

essi

on A

IP s

essi

on B

IP s

essi

on C

E-

se

rvic

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IPv4=> IPv6

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IP sessions based network intelligence

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Services/Applications

Internet

Content Providers

Telco Services

Subscriber managmentCustomer side

IP sessions

E-Services

IP sessions

IP sessions

AAA, Policy, DHCP, MN, (Self)provisioning

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Where to implement network intelligence?

Network Service delivery is an end to end story, but the network can be divided in two main functional parts:

Subscriber Service edge Subscriber service profile Application aware Controlling IP sesssions

Reliable packet transport according to SLA

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L3 vs. L2 service edge

L3 service edge (subscriber and application aware)

+ needed for ISPs and L3 VPN services

- How to control bottelnecks in the access, aggregation, backhaul?

- Scalability and price (growing bandwidth, number of sessions to control)

Solution: Distribution (of functions) and simplification

L2 service edge (subscriber and application aware)

+ Needed for next generation wholesale, open access provider provider, business L2 VPN services

+ In Access or Aggregation (for legacy access nodes)

+ Service provisioning close to the customer

+ Enchanced network security and QoS control

+ Lower network CAPEX and TCO

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CPE

CPE

Access

Access

Aggregation

Aggregation

Distribution

Distribution

L2SEL2SE

L2SEL2SE

MPLS transport

Service providerNetwork provider

1:1 VLAN

Possible placement for L2SEPossible placement for L2SE

L2SEL2SE

L2 service edge, per subcriber service control and provisioning,

MPLS (or PBB) packet transport only, no per subcriber service provisioning or operations

L2 service instances, E-Line, E-LAN services

L2 Service Edge Architectures

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Moving intelligence to the access (ISA)

L2 (Ethernet) service edge: QoS (bandwidth, priortiy) per subscriber per service per

service/application provider Advanced VLAN “manipulation”

• i.e. different types of QinQ, VLAN remarking, multicast VLAN IP session (application, service) awarness and high access list

scalability (needed for QoS, security, accounting actions) based on L2, L3 L4 header information

AAA (Authentication, Authorisation, Accounting) client Profile (subscriber, service) based provisioning of L2 network

services

More in the future

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What are the key benefits of ISA? Lower CAPEX due to less complex aggregation (and IP

edge in some cases) equipment: Network Provider for L2 wholesale services Open Access providers Vertically integrated network and ISP providers

Lower OPEX due to easier e2e QoS and subscriber service provisioning (just on subscriber port)

Abillity to innovate and develop advanced business models for network providers (OTT and Telco synergy)

Abillity for advanced business connectivity on universal access platform

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Conclusion

NGA networks are not just about new physical layer

Innovative (and new) business models should have innovative network features

The right active network architecture is the key part of the NGA network

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