What is Distributed Access Architecture?
Distributed Access Architecture (DAA) sees functions that usually reside in the headend or hub distributed closer to the user. Moving functions into the network reduces the amount of hardware the headend (hub) needs to house, thus creating efficiencies in speed, reliability, latency and security in support of 10G.
What is Distributed CCAP Architecture?
Cablelabs' Distributed CCAP Architecture (DCA) defines the design and interface specifications required for the deployment of a scalable and cost-effective distributed hybrid fiber coax access networks. The architecture allows operators to take full advantage of the gigabit capabilities of DOCSIS 3.1, including Full Duplex DOCSIS, Low Latency DOCSIS and Coherent Optics. This translates to more than enough bandwidth to support the latest-generation products far into the future.
What problem are we solving?
By placing MAC (DOCSIS processing) and PHY (DOSCIS signal generation) delivery in key areas of the access network this distributed infrastructure provides flexibility for operators to deploy network functionality when, where and how it best meets their objectives. The resulting set of solutions provides a powerful advantage to deliver 10G services.
DCA Solution Components
The DCA program includes the Remote PHY (R-PHY) and Flexible MAC Architecture (FMA) projects and leverages Full Duplex (FDX) DOCSIS 3.1 technology. The resulting set of specifications support a standard CCAP design with functionality distributed around the access network.
Flexibility & Scalability
The DCA specification library and additional tools allow fiber, coax, wireless and other technologies enabling gigabit services to be implemented in a scalable and cost-effective manner.
Increased Network Reliability
In a distributed architecture, the reliability of the overall system improves. In addition to more fiber being deployed, which increases reliability, each node serves a smaller number of homes so outages impact fewer subscribers.