Transcript Document

Switched Digital Video Solution
Motorola SDV Solution
February 14, 2008
Scott Ghiz
Principal Staff Applications Engineer
Switched Digital Video
Motorola Home & Networks Mobility
[email protected]
+1.215.208.2677
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MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office.
All other product or service names are the property of their respective owners. © Motorola, Inc. 2007
Agenda
I.
II.
III.
IV.
V.
VI.
VII.
What is driving Switched Digital Video [SDV]?
What is SDV?
Where does SDV fit into an operational cable plant?
How does the SDV system interact?
Motorola SDV component specifications
SDV impact on other cable plant components
SDV System Configuration
I.
II.
Automated
Manual
VIII. SDV System Monitoring
IX. SDV System Reporting
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Why is Switched Digital Video needed?
MSO’s need more bandwidth
– more HD Services
– more Digital Simulcast
– simulcasting new codecs [MPEG-4/AVC]
– more International & Special Interest Content
– more On Demand content
– increased high speed data [internet / VoIP] via DOCSIS
3.0 channel bonding
Since bandwidth is limited, better management of network
resources is required.
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Options for Reclaiming Bandwidth
Expand Bandwidth
• Plant Build-out (750 MHz 860 MHz, 1000 MHz)
• Fiber to the Premise/Home (FTTx)
Better Use of Existing Bandwidth
• Statistical Multiplexing
• All-Digital Networks
• Advanced Codecs (MPEG-4/AVC)
• Switched Digital Video (SDV)
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All other product or service names are the property of their respective owners. © Motorola, Inc. 2007
What is Switched Digital Video (SDV)
SDV is the dynamic switching of digital services on and off
the physical cable plant based on subscriber usage
– Certain services are designated by an MSO as “switched
services”
– A switched service is only placed onto the cable plant
(“switched on”) if at least one STB tuner is tuned to that
service in a specific, MSO defined service group.
– SDV makes more efficient use of bandwidth on the
physical cable plant
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Broadcast Services
For broadcast services, all services go to all homes all the
time, regardless of whether anyone is watching those
services.
QAMs
Switch
P=1
P=2
P=3
P=4
P=5
P=6
P=6
P=7
P=8
P=9
P=10
P=1
P=2
P=3
P=4
P=5
P=6
P=6
P=7
P=8
P=9
P=10
P=1
P=2
P=3
P=4
P=5
P=6
P=6
P=7
P=8
P=9
P=10
QAMs
QAMs
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Switched Digital Video [SDV]
For switched services, only the services being watched in a
particular service group are transmitted.
QAMs
Switch
P=1
P=2
P=1
P=2
P=2
P=3
P=3
QAMs
QAMs
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P=5
Customer Viewing Patterns
Most
Viewed
SUBSCRIBERS VIEWING
PROGRAMS
80/20 Rule - 80% of subscribers
are watching 20% of content
Least
Viewed
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[based on the 80/20 rule of marketing & economics]
Infrequently watched “niche”
services (in gray) are good
candidates to become
“switched services”
Subscribers Viewing
SDV Bandwidth Utilization Improvements
Most Watched Programs
Program
Switching
Programs
Niche programs switched at service group level instead
of broadcast to all subscribers
Unwatched digital tier programs will no longer waste
valuable bandwidth
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SDV End-to-End Connectivity Diagram
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Headend Signal Flow Diagram w/SDV
SDM
EPG Server
Billing
System
5457/udp
Serial
Port Server
KLS
QPSK
71 - 129 MHz
30 - 50 dBmV
1.5 MHz BW
2.048 Mbps
OM
6157/udp
DAC
8857/udp
5657/udp
RADD
NC
5861/udp
58xxx/udp
RPD
QPSK
8 - 12 MHz
0 ± 3 dBmV
130 kHz BW
256 kbps
STB
HFC Network
Application /
VOD Server
SVOM
SEM
GigE
SVM
(redundant)
In-ba
ERM
(redundant)
64/256 QAM
91 - 861 MHz
45 – 58 dBmV
6 MHz BW
26.97 Mbps (64 QAM)
38.81 Mbps (256 QAM)
nd m
ini c
(TWC arousel
data
SDV
)
Analog: 0 to +15 dBmV
Digital: -10 to +5 dBmV
Return: 24 to 60 dBmV
Legends:
RF / Coax
Ethernet (OAM&P)
DSR 4400MD
Rate Clamp (BNP)
ASI
MPTS
QPSK L-band
950 – 2150 MHz
-25 to -65 dBm
24 or 36 MHz BW
NE
GigE
multicast SPTS
DSR
Stat. Mux.
ASI
GigE switch
GigE
multicast SPTS
GigE
or ASI
EQAM (SEM)
←IGMP join
→ GigE multicast SPTS
SEM
Ethernet (App. Net.)
Ethernet (GigE)
ASI
Serial
Downstream device
Analog
System
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Upstream device
Controller / Server
STB Auto-Discovery Process
0a. SVM [or guide server] streams configuration
information out-of-band using data PID
5. SVM identifies STB’s Service
Group
6. SVM reports Service Group back
to STB [ACK].
2. STB looks for data PID and gets
configuration information including
list of SDV frequencies.
1. STB is powered on.
3. STB scans SDV frequencies and finds
TSIDs that it happens to see.
4. STB responds to SVM with TSID
list.
STB is signed onto the SDV network
0b. Edge QAM devices stream TSIDs on
each of their SDV QAMs
Prior to SDV auto discovery, STB
signs onto the Motorola
interactive network as usual.
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Subscriber Surfs to a Switched Channel
(A25.2-X)
10. Edge
Every five minutes the SVOM gets raw customer
5. ERM directs
behavior
Device to join a data from the SVM and QAM usage from the
ERM for processing into user friendly reports.
multicast stream
and bind it to a
frequency [QAM],
assigning a
program number
determined by the
ERM
9. SVM updates channel list on
out-of-band mini carousel and
‘locks’ the selected channel
after a MSO defined time interval
7. SVM returns frequency
and program number to
the STB IP
6. Edge Device joins the
multicast stream and sends it
out the specified QAM using the
selected program number
1. Subscriber selects
a switched channel
2. Client sends
3. SVM determines
channel change
source details for the
4. SVM requests QAM resources for
message indicating
requested channel
8. desired
Settop tunes
to and
the selected channel from ERM based
channel
frequency
and
program.
on TSID group
its TSID group
0. Source content streams (and is
Subscriber is now watching
encrypted) through the GigE switches as
selected
program.
2a. Note: If the channel isthe
already
in the
multicast SPTSs
mini carousel the SDV client [STB] can tune
to it prior to receiving a message back from
the SVM
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How long does all of that cable plant
activity take?
150ms
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System Specs -- Motorola SDV Controllers
3 Components of the Motorola SDV Solution:
•
Switched Video Manager (SVM1000 / SVM2000)
– Manages Set Top Box interactions
•
Edge Resource Manager (ERM1000)
– Manages Edge QAM devices
•
Switched Video Operations Manager (SVOM1000)
– Manages/configures/monitors SVMs and ERMs
– Provides detailed customer interaction reports
Commonalities:
–
–
–
–
Distributed architecture [three components]
High availability*
Linux OS
Web-based UIs
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Switched Video Managers
• SVM1000
• Licensed for 25,000
tuners & 250 CC/sec
• SVM2000
• Licensed for 55,000
tuners & 550 CC/sec
Both units are full redundant, support in-band & out-of-band carousels,
and provide GUI system monitoring and reporting.
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Edge Resource Manager
ERM1000
•
•
•
•
•
Fully Redundant
ERM1000 is licensed for 5,000 QAMs
ERM1000 can support up to 50,000 streams
Third Party QAM support [Arris/Harmonic/…]
Supports QAM Sharing between VOD and SDV
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SVOM1000
• Manages Multiple SVMs and ERMs
• Supports up to 1 million tuners
• Channel Configuration Setup [MSO provided]
– Source ID / Bandwidth / Encoding Type / User (Virtual) Channel /
Multicast SPTS socket / Source IP
• SVM and ERM Configuration Setup
– SVM / ERM / QAM / Service Group Relationships & Mappings
• System Status Monitoring [ red light / green light ]
– SVM status / ERM Status / QAM Status
• Collect & Report Usage Statistics [ red light / green light ]
– Channel Usage Pareto / SG BW / STB Usage / Channel Change Rates
/ Failures & Warnings
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All other product or service names are the property of their respective owners. © Motorola, Inc. 2007
SDV System Configurations
SVOM1000
In an operational
environment, redundant
SVMs and ERMs are
recommended and a hot
or cold standby SVOM
is recommended
• Depending on site topology, SVOMs and ERMs are
usually outnumbered by SVMs.
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All other product or service names are the property of their respective owners. © Motorola, Inc. 2007
SDV Impact on Other Cable Plant
Components
• Because SDV requires two-way communication between
the STB and SVM every time a switched channel is
requested by a single tuner, other parts of the Aloha
Network within the cable plant are effected.
• OM1000/2000, RPD2000/ARPD, and NC1500 units are all
impacted with additional SDV driven traffic.
• The additional loading will probably lead to OM splits, NC
splits, and adding of DM cards or upgrading to ARPDs.
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Configuring SVOM / SVM / ERM
SVOM1000
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Redundancy / IP addressing
There are 4 networks:
1.
Application
2.
OAM&P
3.
Streaming (GigE)
4.
Redundancy (device-to-device connections)
Example IP configuration:
Physical
Connection
SW Port
SVOM001
NIC1
eth0
165.223.31.125
SVM001
NIC1
eth0
165.223.31.130
NIC2
eth1
NIC3
eth2
NIC4
eth3
NIC1
eth0
NIC2
eth1
NIC3
eth2
NIC4
eth3
NIC1
eth0
NIC4
eth3
NIC1
eth0
NIC4
eth3
Device
SVM002
ERM001
ERM002
Application
network IP
7 IP
Addresses!
Application
Virtual IP
OAM&P
network
For NTP Time Server
Synchronization
Streaming
network IP
[in-band minicarousel]
Redundancy
network IP
110.8.201.77
165.223.31.132
110.8.201.80
10.100.100.24
10.1.1.1
165.223.31.131
165.223.31.132
110.8.201.81
10.100.100.25
10.1.1.2
165.223.31.133
165.223.31.135
10.1.1.5
165.223.31.134
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165.223.31.135
10.1.1.6
Configuration via the SVOM
• Automated Configuration Import
• Manual On-Line Editing / On-Line Update
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SDV Configuration Data Sheet
Build configuration in
MS Excel. All columns
with red font are
required fields.
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Save each of the four
worksheets
•headend devices
•edge devices
•service groups
•channel maps
as .csv files.
Configuration File Import
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Why Automate the Configuration Process?
258 Channels
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Manual On-Line Configuration
-- SVOM / SVM / ERM
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User Interface Access
• Web UI access:
– SVOM: https://<IP of SVOM>:8090
– SVM: https://<IP of SVM>:8089
– ERM: https://<IP of ERM>:80XX
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SVOM – Channel Configuration
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SVOM – Channel Configuration / Edit / Add
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SVOM – SDV Service State by Channel
Map
SVOM
•Allows a channel to be placed
in-to-service or out-of-service
•A channel placed out-ofservice allows current
viewers to continue viewing
the channel, uninterrupted,
but does not allow new
viewers to join the switched
stream
•Multiple service groups with
different channel maps may
contain different service states
for the same SDV channel
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SVM Manual Configuration / SDV Channel
Configuration / Locked Channels
For troubleshooting and test purposes
and to ensure uninterrupted service in
advance of an anticipated channel
change storm.
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SVOM – Edge Device Configuration
Manual configuration of
edge devices.
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SVOM – Edge Device / QAM Management
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SVOM – Edge Device / SG Management
Manual configuration of
edge device service
groups.
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SDV System Monitoring
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SVOM -- System Monitoring
Problem!
No Problem
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SDV Monitoring from SVOM
– Event Log Viewer
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SVOM – Settop Diagnostics Page
•SVOM adds a settop diagnostics page allowing the
display of the status of a particular settop box. Dual
tuner example.
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SDV Monitoring from SVOM
– Settop Errors Viewer
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SVM – SDV System Monitoring
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SVM -- Service Group Utilization
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SVM -- Real-Time Channel Matrix
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SDV Monitoring from ERM
– Operational Stats
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SVM Debugging / SDV Channel
Configuration / Locked Channels
If field engineers need to isolate a SDV
QAM in a debugging situation: (1) Lock
the channel in question then (2)
determine which SDV QAM is in use 
next slide.
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QAM Monitoring from SVM
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SDV System Reporting
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SDV System Reports
SVOM maintains 400 GB database [RAID 5, striping on 4
Disks] optimized for reporting
Channel Reports:
• Channel Usage Pareto -- individual and total channel usage for
selected Service Groups
Resource Reports:
• Multiple views of BW usage for selected Service Groups
• Errors by type for selected Service Groups or entire system
System Activity Reports:
• Active tuners and channel changes for selected SG’s
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SDV Reporting -- Channel Changes
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High Use Service Groups
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SDV Reporting -- Channel Usage Pareto
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END
Introduction to Motorola’s SDV Solution
February 14, 2008
Motorola General Business Information, SDV
MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office.
All other product or service names are the property of their respective owners. © Motorola, Inc. 2007