Post on 17-Apr-2018
transcript
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
IP Video Use Cases
TV Everywhere
Video Gateway
Analog reclamation with IP STB
Full-service IPTV
5
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
HSD/VoIP/
IP Video
HSD/VoIP/
IP Video
15
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
HSD/VoIP/
IP Video
HSD/VoIP/
IP Video
Linear
TV
Linear
TV
16
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
Delivery of IP Services over DOCSIS
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
HSD/VoIP/Narrowcast IP
Video
IP STB
CMTS
Cable
Modem
RF
Spanning
DS Bonding Group
DS Bonding Group
DS Bonding Group
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
Delivering IP Video via Broadcast
19
Service Group 1
Service Group N
HSD/VoIP/Narrowcast IP
Video
1:N
Broadcast
IP Video
Cable
Modem
IP STB
HSD/VoIP/Narrowcast IP
Video
IP STB
CMTS
Cable
Modem
RF
Spanning
Broadcast Video
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
Delivering IP Video via Broadcast
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Service Group 1
Service Group N
HSD/VoIP/Narrowcast IP
Video
1:N
Broadcast
IP Video
Cable
Modem
IP STB
HSD/VoIP/Narrowcast IP
Video
IP STB
CMTS
Cable
Modem
RF
Spanning
Broadcast Video
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
Admission Control and QoS Multicast: PCMM
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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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
IP Video Business Policies
Service Level
– Premiere vs Basic
Content
– Pay vs Free
– Preferred Partner
IP Video Device
– 60” HDTV vs iPad
34
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
QoS for ABR streaming
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
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© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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
© 2013 Cisco and/or its affiliates. All rights reserved. BRKSPV-1126 Cisco Public
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