mobileplots.com - policy control today and tomorrow - sdn and 5g

Alberto Diez - [email protected]

Policy Control today and

roadmap to SDN and 5G

Alberto Diez – 2016

Agenda

• Policy Control today

• 3GPP Rel10-Rel13

• NFV/SDN

• IoT

• 5G

• Telecom trends

• Policy Control tomorrow


Policy Control today


History of policy control

Rel6 Rel7 Rel8 Rel9 Rel10 Rel11 Rel12 Rel13

2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

SBLP PCC EPC




2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

SBLP PCC EPC

S9Gq

Gx

Sp Sy

Sd

S15 & S9a

REST-RxNp

St

NtGxxGo

RxInterfaces




2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

SBLP PCC EPC

Usage

Monitoring

S9Gq

Gx

Sp Sy

Sd

S15 & S9a

REST-RxNp

St

Nt

DPI

OCS

Congestion

Control

Traffic

SteeringMTC

Gxx

QoS

Gating

Sponsored

Connectivity

IFOM

Go

RxInterfaces

Features




2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

SBLP PCC EPC

Usage

Monitoring

S9Gq

Gx

Sp Sy

Sd

S15 & S9a

REST-RxNp

St

Nt

DPI

OCS

Congestion

Control

Traffic

SteeringMTC

Gxx

QoS

Gating

VoLTE

net-neutrality

OTT

Sponsored

Connectivity

FUP

IFOM

Go

RxInterfaces

Features

Topics




2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

SBLP PCC EPC

Usage

Monitoring

S9Gq

Gx

Sp Sy

Sd

S15 & S9a

REST-RxNp

St

Nt

DPI

OCS

Congestion

Control

Traffic

SteeringMTC

Gxx

QoS

Gating

VoLTE

net-neutrality

OTT

Sponsored

Connectivity

FUP

IFOM

Go

Rx

NFV/SDN 5G

IoT

Interfaces

Features

Topics




2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

SBLP PCC EPC

Usage

Monitoring

S9Gq

Gx

Sp Sy

Sd

S15 & S9a

REST-RxNp

St

Nt

DPI

OCS

Congestion

Control

Traffic

SteeringMTC

Gxx

QoS

Gating

VoLTE

net-neutrality

OTT

Sponsored

Connectivity

FUP

IFOM

Go

Rx

NFV/SDN5G

IoT

Interfaces

Features

Topics

Declining relevance of policy?


The role of policy control today

• Shift from QoS to VoLTE

• Competition with Charging for

Usage Monitoring / FUP upsell

of data plans

• Overcoming DPI and

circumventing Net-neutrality

with OTT & zero-rating

VoLTE

Data Plans

Zero-Rating

OTT


VoLTE

• VoLTE made PCRF mandatory when it was not

• VoWiFi and ViLTE not as relevant

• What is needed for VoLTE?– Rx interface

– Emergency support

– NetLoc

– Basic Events

– MPS

– SIP-Forking

No Need for:

- user profiles

- usage monitoring

- DPIs

- S9


Usage Monitoring and Data Plans

• Disputed feature with OCS

• In favor of PCRF are– Required for postpaid too

– Personalization / Subscriber profiles

– Policy and QoS effect

– Application / Context awareness

– More flexible rules engine

• Against it– Rating / Bill Shock prevention


OTT & Net-neutrality

• Zero-rating as killer application

where its allowed

• Net-neutrality permits

– Emergency

– VoLTE and operator

services prioritization

– Congestion control


Value for the end user

• Classical

– QoS & dedicated bearer but user cares about QoE

– Emergency calls but PCC is optional

• Innovative

– Personalization

– Data plans upsell (e.g. roaming, video)


Value for the service provider

• Gain agility with a common point for control and

provisioning of a service proposition

– Usage Caps

– QoS & policies

– Traffic steering

• Congestion control


3GPP


Traffic Detection Function

• ADC rules

• Redirection

• Unsolicited ADC rules operation


Interaction with OCS

• Sy interface

• Spending Limits as

input for policy

decision

Integration with BBF

• S15 and S9a interface

• Irrelevant


Congestion Control

• RCAF and Np interface

• RUCI info per IMSI or APN and ECGI, SAI

eNodeB-Id..

• PCRF to consider this information for new policy

decision

• Possibility to activate it by IMSI (restrictions)

• Mobility to new RCAF area an issue


Traffic Steering

• TSSF and St

• Selecting between different (S)Gi-LAN

• Can be done by the PCEF or TDF instead

• Traffic description and reference to traffic

steering policy


APIs & Network Capabilities

• Nt interface to SCEF for exposure of network

capabilities (i.e. OMA or others)

– Background data transfer window reservation

“transfer policy”

• Rest-Rx and Protocol Converter


NBIFOM

• Related to Multi-access IPCAN sessions

• UE initiated and Network Initiated

• PCRF is not mandatory

• Routing Rules authorization (UE) and selection

(Network)


NFV/SDN


NFV/SDN promise

• Flexibility

• Agility

• Time-To-Market

• Reduce OPEX


NFV Management & Orchestration

• MANO does have service

models and interacts with

BSS/OSS but

– Reserves resources

– Instantiate and deploy Functions

– Provisions Services

– Configure Services

MANO

Telco

Network

BSS

Onboard new enterprise

With these policies

1. Reserve virtual resources

2. Instantiate new elements (PDN-Gw, PCRF)

3. Configure networking (SDN)

4. Configure new elements

6. Configure existing elements (DRA, SGw)

5. Provision policies


SDN Control

Control

Data Flows

SwitchSwitch

Switch

Switch

Switch

Switch

Switch

SDN

Controller


Service Function Chaining

NFV

SDN

VNF3

VNF1 VNF4

VNF2

VNF1

VNF2

VNF3

VNF4


Service Function Chaining or Traffic Steering

PCRF

Real-Time

Subscriber

awareness

Service

awareness

Gw

Application

awareness

VNF4

VNF2

TDF

SFCtag

Orchestrator/

SDN Controller

VNF3

Applications

Network

PCRF


GBP and Intent Networking

LB

LB

LBLB

Group of

Loadbalancers

•Allowances

•Security policies

•QoS policies

Applications

Network

SDN Controller

A : Intent to reach D

Apply policy in A

Create path A & B

Create path B & D


OpenDayLight and its projects

• SDN Controllers use models (described with YANG) for network elements and for the information send to them

• Projects:– ASPEN – Real time Media REST NBI. Intent based. Dynamic

QoS reservation for Lync and Webex.

– Boulder – Intent framework for any controller

– Service Function Chaining

– Group Based Policy

– Network Intent Composition


Orchestration, SDN and Policy Control

NFV Orchestration

Policy Control

SDN

Scaling up & down

Innovative use

cases

Time-to-Market

Time-to-Market

Operational EfficienciesMulti-Tenancy

Network

Optimization

OSS/BSS

SDx

CM

Automation

SON

UP/CP Separation

OpenFlow

Auth

Complex!

App Awareness

Subscriber Aware

Real Time

Service Chaining

APIs

Scripts System

models

Service

models

Network

models

Configuration

Run-Time flexibility

Intent

QoS control


IoT


Use of policy in M2M

• Known operators cases

– Usage monitoring and group

counters to control M2M

expenditure

– Selecting 2G, 3G or LTE

speed


Does IoT need policy?

• Wearables

• Connected House

• Connected Car

• Smart Cities

• eHealthBackground application data transfer windows

is interesting because of mass rollout of

updates etc. But why does the PCRF predict?

Couldn’t someone else do it?


Industry 4.0 and policy

• Going beyond sensors and

actuators

• Low-latency industrial

applications

• High bandwidth critical data


5G


Get rid off the core network

SDN

ControlSubs/Devices

Switch/

Gw

VAS1

VAS2

MANO

Anchor

IP

OF, RESTConf, ?

NSH

LTE

MME

mm

Wi-Fi

Charging

Security/ AAA

Policy/QoS

Switch/

Gw


Network Slicing

Radio Access Network

Core NetworkM

VN

O

Apps

Web

Vid

eo

IoT…

Radio Access Network

MVNOApps

Web

Video IoT

…

Core

Network

Core

Network

Core

Network

Core

Network


Multi-Access

• LAA, LWA, LTE-U, MULTEFIRE..

• MAPCON, IFOM, NBIFOM

• ANDSF features & Policy

• Location based Policies

• SON


Telecom trends**(selected from Gartner)


Big Data

• PCRF can be both source or sink of big data

• Source: PCRF receives a lot of information from the network, applications, user

• Sink: PCRF can learn from Big Data to optimize policies and achieve network efficiency


Machine Learning

• The PCRF could automatically

learn from the networks new

policies

• Congestion avoidance

• Optimizations

• Combined with Big Data

• Manual approval?


Natural Languages

noun verb adjective

• Could policies be expressed in

natural language?

• Combined with Intent

• Would it reduce complexity

and OPEX?


WebRTC / Contextual Services

• Can policy add to context?

• Can policy grant QoE in

WebRTC services?


Open APIs / Open Data

• To few attempts to expose

policy as part of network

capabilities

• APIs e.g. OMA One

• Data can be exported for

analytics


Open Source

• Fundamental in NFV/SDN

– OSM group in ETSI

– OPNFV

– OpenDayLight and ONOS

• If policy is part of SDN Control

then Open Source is part of

policy


Future of policy control


The role of policy control

• QoS might be done by the

SDN Controllers via API

• Data Plans might be a

charging feature OSS/BSS

• Zero-rating and OTT

partnership might be an SDN

Controller exposed API

QoS

Data Plans

Zero-Rating

OTT


Value for the end user

• Personalization combining

Real-Time and Subscriber

Data awareness


Value for the service provider

• Not from 3GPP

• Does it help to reduce OPEX?

• Does it make the network

simpler?

• Does it contribute to quick

deployment of services?

• Does it provide flexibility?


Thank you!

http://mobileplots.com

Takeaways

3GPP Core Network losing relevance

PCRF needs to cooperate with SDN

Controller and provide value by itself

Slice-PCRF and use-case specific PCRF

Upcoming Trends

Simplification of core network

Automated and intelligent policy

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