Benefits and implementation of ingress/egress reduction. BarrIER® technology is an innovative solution for reducing ingress/egress that addresses the
complete in-home interconnect domain and solves the problem of maintaining adequate C/N
levels.
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Migrating from DOCSIS® 3.0 to 3.1 “The Challenge”
Should we first learn to walk before we can run?
The DROP = GATEWAY to the broadband network
Total throughput = throughput of DROP * throughput of other network parts
Nothing times a lot of is still nothing
Drop
Head-End
Backbone
Node
HE & Backbone & Node
Drop
Investments Maintenance costs
CableLabs is owner of the trademark
DOCSIS®
Throughput
before
Throughput
after
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Migrating from DOCSIS 3.0 to 3.1 “The Challenge”
What is key to success
• Network reliability & performance
• Quality of Service all the way in to the home
• Customer satisfaction
Do we have this today?
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Migrating from DOCSIS 3.0 to 3.1 “The Challenge”
Work in progress!
• Bad contacts
• Poor connections
• Damaged cables
• Intermodulation
• Common Path Distortion (CPD)
• Ingress/Egress!
• Screening effectiveness of the in-home domain!
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Migrating from DOCSIS 3.0 to 3.1 “The Challenge”
Ingress
• 90% induced by subscribers
• Ingress perceived as an upstream issue
• Ingress perceived as a network issue
• DOCSIS 3.1 will allow higher modulation schemes with current
network C/N but what about to day (Can we take our foot of the gas)?
New Kids On The Block
• Down Stream ingress C/N interference
• Down Stream egress interfering with wireless services
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Can ingress/egress get any worse?
New services being deployed
• Deployments in CATV Band (700 -1200MHz)
• Higher powered handsets and base stations
• CPE equipment sensitive to LTE interference
• Regulatory obligation not to transmit CATV signals
outside of closed network (Egress)
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The problem
Ingress/Egress/LTE interconnect RFI shielding effectiveness
• Open ports of wall sockets
• Open ports of passive splitters and taps
• Loose RF connectors
• Open RF connectors
• Poor or damaged RF cables
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The problem and the solution, RFI shielding
Standard open F male BarrIER® F male
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The problem and the solution, RFI shielding
In-Home amplifier, ports open In-Home amplifier with BarrIER®
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The problem and the solution, RFI shielding
Two way splitter, one port open Two way splitter with BarrIER®
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Network signals interfering with LTE (Egress)
A 15dBmV CATV signal feeding 30 feet of coax with an open
F male connector will interfere with an LTE handset at 6 feet