Deploying IP video over DOCSIS - bowe.id.au · Deploying IP video over DOCSIS BRKSPV-1126 John Horrobin, Marketing Manager ... • CMTS dynamically forwards multicast video streams

Deploying IP video over DOCSIS BRKSPV-1126

John Horrobin, Marketing Manager

Cable Access Business Unit

© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public

Agenda

IP Video Use Cases

Delivering IP Video over DOCSIS 3.0 Networks

Admission Control and QoS

Optimizing for Adaptive Bit Rate Video

Bandwidth requirements for IP Video

3

IP Video Use Cases

4


IP Video Use Cases

TV Everywhere

Video Gateway

Analog reclamation with IP STB

Full-service IPTV

5


Connected

TV

PC

Play

Station

iPad

iPhone

Android

Phone

Digital STB

CM/

Gateway

CMTS

Home

Net

Laptop

Digital STB

IP Video Use Case #1: TV Everywhere

Edge QAM

Data VoIP

IP

Video

Linear VoD

NPVR

IP Services

Digital Video

Services

6


Connected

TV

PC

Play

Station

iPad

iPhone

Android

Phone

IP STB Unified

Gateway

Connected

TV

Home

Net

Laptop

Digital STB

IP Video Use Case #2: Video Gateway

CMTS

Edge QAM

Data VoIP

IP

Video

Linear VoD

NPVR

IP Services

Digital Video

Services

7


Connected

TV

PC

Play

Station

iPad

iPhone

Android

Phone CM/

Gateway

CMTS Laptop

Digital STB

IP Video Use Case #3: Analog Reclamation

Edge QAM

Data VoIP

IP

Video

Linear VoD

NPVR

IP Services

Digital Video

Services

IP STB

Home

Net

8


Connected

TV

PC

Play

Station

iPad

iPhone

Android

Phone

IP STB

CM/

Gateway

CMTS Laptop

IP STB

IP Video Use Case #4: Full-service IPTV

Data VoIP

IP

Video

IP Services

Home

Net

9

Delivering IP Video over DOCSIS 3.0 Networks

10


Cisco Video over DOCSIS 3.0 Solution

Managed

& Unmanaged

CPE Devices

Video over DOCSIS Solution

uBR10012

w/ 3G60

CMTS

RFGW-10

EQAM SP Video

PCMM

PS

D20

or

D30

CM

SRM

Internet

High-speed Data (HSD) &

Over-the-top (OTT) Video

Service Provider (SP) Video

SP Video Control Plane

HSD &

OTT Video

HFC

11


Content

Format

Unicast

Switched

Broadcast

Delivery

Method

Hard Partition

Soft Partition

Shared

HSD

VoIP IP Video

HSD

VoIP IP Video

HSD

VoIP IP Video

Service

Separation

DOCSIS

Topology

Bandwidth

Allocation

CIR

Best Effort

Dynamic

Bandwidth

Sharing

Dynamic

Load

Balancing

Fairness

PCMM/IGMP

IP Video Overlay

DOCSIS Overlay

1:1

HSD

VoIP

IP Video

HSD

VoIP

IP Video

HSD

VoIP

IP Video

12

CBR

VBR

ABR

Cisco Video over DOCSIS 3.0 Solution


Linear TV delivered to all subs all the time (independent of viewership)

Lowest CMTS DS capacity/cost; typically requires more spectrum than switched

Most suitable for large number of subs and popular programming

Unicast

Switched

Broadcast

IP Video Delivery Methods

Linear TV delivered only to active viewers

Most efficient use of spectrum; higher CMTS DS capacity/cost than broadcast

Network sizing based on viewership statistics

Personalized linear TV and VoD delivered to each sub

Highest CMTS DS capacity/cost and spectrum requirement for linear TV

Alleviates multicast requirements on end-to-end IP Video system

13


Delivery of IP Services over DOCSIS

Service Group 1

Service Group N

4x4 D30 CM

1x1 D20 CM

8-ch BG

4-ch BG

8x4 D30 CM

4x4 D30 CM

1x1 D20 CM

8x4 D30 CM

8-ch BG

4-ch BG

CMTS

Integrated or

Modular

HSD/VoIP/

IP Video

HSD/VoIP/

IP Video

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

14



Service Group 1

Service Group N

4x4 D30 CM

1x1 D20 CM

8-ch BG

4-ch BG

8x4 D30 CM

4x4 D30 CM

1x1 D20 CM

8x4 D30 CM

8-ch BG

4-ch BG

CMTS

Integrated or

Modular

HSD/VoIP/

IP Video

HSD/VoIP/

IP Video

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

HSD/VoIP/

IP Video

HSD/VoIP/

IP Video

15



Service Group 1

Service Group N

4x4 D30 CM

1x1 D20 CM

8-ch BG

4-ch BG

8x4 D30 CM

4x4 D30 CM

1x1 D20 CM

8x4 D30 CM

8-ch BG

4-ch BG

CMTS

Integrated or

Modular

HSD/VoIP/

IP Video

HSD/VoIP/

IP Video

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

HSD/VoIP/

IP Video

HSD/VoIP/

IP Video

Linear

TV

Linear

TV

16



Service Group 1

Service Group N

4x4 D30 CM

1x1 D20 CM

4-ch BG

8x4 D30 CM

4x4 D30 CM

1x1 D20 CM

8x4 D30 CM

4-ch BG

16x4 D30 CM

16x4 D30 CM

8x4 D30 CM

8x4 D30 CM

CMTS

Integrated or

Modular

All Viewed

Linear TV

All Viewed

Linear TV

8-ch BG

8-ch BG

Multicast

IP Video

Multicast

IP Video

HSD/VoIP/

Unicast IP Video

HSD/VoIP/

Unicast IP Video

16-ch BG

16-ch BG

17


Delivering IP Video via Broadcast

18

Service Group 1

Service Group N

HSD/VoIP/Narrowcast IP

Video

1:N

Broadcast

IP Video

Cable

Modem

IP STB


Video

IP STB

CMTS

Cable

Modem

RF

Spanning

DS Bonding Group

DS Bonding Group

DS Bonding Group



19

Service Group 1

Service Group N


Video

1:N

Broadcast

IP Video

Cable

Modem

IP STB


Video

IP STB

CMTS

Cable

Modem

RF

Spanning

Broadcast Video



20

Service Group 1

Service Group N


Video

1:N

Broadcast

IP Video

Cable

Modem

IP STB


Video

IP STB

CMTS

Cable

Modem

RF

Spanning

Broadcast Video


Broadcast & Switched Delivery of Linear TV

Service Group 1

Service Group N

4x4 D30 CM

1x1 D20 CM

8-ch BG

4-ch BG

8x4 D30 CM

1:N

4x4 D30 CM

1x1 D20 CM

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

16x4 D30 CM

16x4 D30 CM

Static Multicast

CMTS

Integrated or

Modular

Popular

Linear TV Long-tail

Linear TV

Long-tail

Linear TV

Dynamic

Multicast

12-ch BG

8-ch BG

4-ch BG

12-ch BG

21


F

o

r

w

a

r

d

C

o

m

b

i

n

e

r

F

o

r

w

a

r

d

C

o

m

b

i

n

e

r

HFC

HFC

SG 1

SG N

Universal EQAM DOCSIS

QAM

Replication

VoD

QAM

Replication

Broadcast

QAM

Replication

CCAP with Modular Headend Architecture (MHA-CCAP)

Data VoIP

IP

Video

Linear VoD

NPVR

CMTS

IP Services

Digital Video

Services

SDV

QAM

Replication

Maximize ROI, reduce OPEX, optimize UEQAM utilization, simplify combining networks

22


All services share bandwidth dynamically

Application-based admission control can reserve different amounts of bandwidth for CIR flows of different applications (SFAC)

No guarantees for aggregate bandwidth of each service’s best effort traffic

Hard Partition

Soft Partition

Shared

HSD

VoIP

IP Video

HSD

VoIP IP Video

HSD

VoIP

IP Video

Overlapping BGs for different services across same set of DSs

Ability to provide guaranteed amount of bandwidth per service even for best effort traffic

Dynamic Bandwidth Sharing capability. Any unused bandwidth from one service’s BG is made available for another service’s BG

RF channels are dedicated for specific services

No dynamic bandwidth sharing.

Unused bandwidth from one service cannot be used by another service

Service Separation

23


Overlapping Bonding Groups

Service Group 1

Service Group N

8x4 D30 CM

8x4 D30 CM

16x4 D30 CM

16x4 D30 CM

8x4 D30 CM

8x4 D30 CM

CMTS

Integrated or

Modular

HSD/VoIP/

IP Video

HSD/VoIP/

IP VIdeo

HSD/VoIP/

IP Video

HSD/VoIP/

IP Video

16-ch BG’s

8-ch BG’s

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM

8x4 D30 CM Use Service Flow attributes to direct flows to Bonding groups

24


Traffic Steering

Map flows to DOCSIS Service Flows

– Service Flows can be static or dynamic

– Static Service Flows can use DSCP or Video Server IP address for classifier

– MQoS used to assign Service Flow attributes per (S,G)

– Dynamic Service Flow classifier signaled at session setup time

Steer DOCSIS Service Flows to Bonding Groups via SF attributes

– Attributes configured on Bonding Groups

Single IP flow per DOCSIS Service Flow

– Fine grained control

– Protects flows from other misbehaving flows behind same CM

– Typically used with dynamic Service Flows

Multiple IP flows per DOCSIS Service Flow

– Lack of fine control per flow

– Typically used with static Service Flows

25

Admission Control and QoS


Admission Control and QoS VoD: PCMM

27

VOD streamer CMTS

IP Network

Policy Server

Application Manager

PCMM

Admission Control

CM

• CMTS forwards unicast video streams based on PCMM signaling

• Policy Server performs authorization checks and signals CMTS with QoS requirements

• Upon receipt of Gate-Set, CMTS creates classifier and service flow and reserves bandwidth

• Flexible forwarding to cable interface based on service flow attributes

IP Video Device


Admission Control and QoS VoD: RSVP

28

VOD streamer CMTS

IP Network

Admission Control

CM

• Entitlement performed prior to initiating bandwidth reservation request

• CMTS pre-configured with video service class

• Upon receipt of RSVP, CMTS creates classifier and service flow and reserves bandwidth

• Flexible forwarding to cable interface based on service flow attributes

IP Video Device

RSVP


Admission Control and QoS Multicast: IGMP

29

Multicast Video

Source

CMTS

IP Network

IP Video Device

IGMP Join

DBC

Admission Control / Authorization

CM

• CMTS forwards multicast video streams based on IGMP traffic from IP Video Device

• CMTS pre-configured with video service class

• CMTS performs admission control and multicast authorization


Admission Control and QoS Multicast: PCMM

30

VOD streamer CMTS

IP Network

Policy Server

Application Manager

PCMM

Admission Control

CM

• Multicast extensions included in PCMM IO5

• CMTS dynamically forwards multicast video streams based on PCMM signaling

• Policy Server performs authorization checks and signals CMTS with QoS requirements

IP Video Device

DBC

Optimizing for Adaptive Bit Rate Video


How does ABR impact Video over DOCSIS solution?

Most features described are applicable to ABR or RTP delivered video Channel bonding, RF spanning, VBR and load balancing applicable

ABR delivered via multicast can leverage IGMP, PCMM for session signaling, use RF spanning for efficiency

VoD can use PCMM even for ABR

• Admission Control Admit flows at desired profile, and use rate-shifting to handle in-

home issues

Admit flows at minimum acceptable profile and allow clients to up-shift when additional bandwidth is available

32


ABR and QoS

With ABR is QoS needed for managed video?

– Can’t client simply downshift till it finds a stable point

• Without QoS:

– Clients “fight it out”

– Operators lose control over what stream gets what QoS

• With QoS

– Operators can apply policies based on type of content, device, and subscriber

33


IP Video Business Policies

Service Level

– Premiere vs Basic

Content

– Pay vs Free

– Preferred Partner

IP Video Device

– 60” HDTV vs iPad

34


Adaptive Streaming Challenges

Adaptive Streaming Key Differences

– One-way UDP based to two-way TCP based

– Fixed bandwidth to self-adapting bandwidth

Bandwidth Efficiency

– Upstream and downstream

Bitrate Adaptation

– Upstream congestion impact to downstream streaming

– Simultaneous adaptive streaming sessions

35


QoS for ABR streaming

36

Bandwidth Requirement Examples


Factors that influence bandwidth requirements

• Type of service

• Linear or VoD or both

• Target devices

• Bitrate of streams

• Resolution: HD vs SD

• Codec: MPEG4 vs MPEG2

• VBR/CBR/ABR

• Multicast or Unicast delivery of linear services

• Cloud DVR vs Home DVR

• Service Group Size

38


Illustrative Example of Broadcast vs Switched Delivery

All

Broadcast

All

Switched

Broadcast

&

Switched

Broadcast Lineup 65 0 20

Broadcast DS per CMTS 12 0 4

Switched Lineup 0 65 45

Peak Switched Channels per SG 0 40 20

Switched DS per SG 0 8 4

Total Switched DS per CMTS 0 280 140

Total DS per CMTS 12 280 144

RF channels per SG 12 8 8

Assumptions:

1. Average bitrate of each broadcast TV channel = 6.5 Mbps

2. 35 SG’s per uBR10012

3. DS channel capacity = 37 Mbps

39


Bandwidth requirements for full-service IPTV

• Modeled capacity for linear and on-demand services

• SG size:100-350 subs

• Multicast for linear

• Multicast gains increase with SG size

• VoD concurrency 20%

• MPEG4

• 50% HD, 50% SD

0

5

10

15

20

25

30

35

Nu

mb

er

of

DS

ch

an

nels

re

qu

ired

Number of IP video subs per Service Group

CBR

VBR

For more details see: “HFC Capacity planning

for IP Video”, SCTE 2011

40


Summary

Cisco’s Video over DOCSIS solution:

Supports a wide range of IP Video use cases

Multicast options for efficient Linear TV delivery

Can be optimized for ABR Video

Cost-effective and scalable

Field-tested in large-scale deployments

41


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Deploying IP video over DOCSIS - bowe.id.au · Deploying IP video over DOCSIS BRKSPV-1126 John Horrobin, Marketing Manager ... • CMTS dynamically forwards multicast video streams

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