D-CCAP Solution Overview
The distributed converged cable access platform (D-CCAP) solution supports DOCSIS 3.0 services and will gradually evolve to DOCSIS 3.1. It maximizes DOCSIS 3.1 performance on high order modulation (HOM) at the physical layer and provides ultra-broadband cable access for carriers. In this way, the service life of HFC networks is extended to the next decade. Compared with DOCSIS 3.0, DOCSIS 3.1 features high bandwidths and spectrum usage so that it empowers operators to provide smooth and clear audio as well as video experience for users over the Internet.
Provides an upstream bandwidth over 2 Gbit/s and a downstream bandwidth over 10 Gbit/s.
- Compatible with existing MSO networks.
- Adapts to HFC networks divided by various spectrums.
- Achieves smooth evolution without restructuring existing networks.
D-CCAP Network Architecture
Network Architecture
Distributed converged cable access platform (D-CCAP) meets the requirements of triple-play network services over hybrid fiber coaxial (HFC) networks of multiservice operators (MSOs) because of unique advantages of the D-CCAPs, such as high bandwidth and supporting HFC networks
Fully-digitized Converged Network
Transmission Media Change Improves CNR by 7–8 dB
In a cable network, carrier-to-noise ratio (CNR) is a key factor that affects bandwidth improvement. Specifically, insufficient CNR in a cable network hinders bandwidth improvement. An improved CNR supports a higher modulation order and bandwidth accordingly in a traditional network, the distribution hub and fiber node use analog fibers for transmission, that is, analog signals are transmitted from the distribution hub to cable modems (CMs).
D-CCAP shortens transmission distance of analog signals, that is, analog signals are transmitted between the CM and CMC and digital signals are transmitted between the OLT and CMC. This solution improves line quality and CNR so that more bandwidth can be obtained
Recommended Product Combination
| Product | Hardware Requirements | |
| OLT: MA5800-X17 (21 inch) MA5800-X15(19 inch) MA5800-X7 (19 inch) MA5800-X2 (19 inch) |
Control board: | H901MPLA, H901MPLB or H901MPSC |
| 10G GPON service board: | H901XGHD | |
| GPON service board: | H901GPHF | |
| 10GE service board: | H901OXHD, H901OXEG | |
| GE service board: | H901OGHK | |
| Video service board: | H901CVEC | |
| CMC: MA5833/MA5633 |
• DOCSIS 3.1 MA5833-BS60 (cable outlets on a single side) : | D3.0/32D x 16U + D3.1/6D x 2U + 80 SC-QAM |
| • DOCSIS 3.1 MA5833-DD60 (cable outlets on both sides) : | D3.0/32D x 16U + D3.1/6D x 2U + 80 SC-QAM | |
| • DOCSIS 3.0 MA5633 (cable outlets on a single side) : | 32D x 8U | |
| • DOCSIS 3.0 MA5633-XB10 (cable outlets on the front panel): | 32D x 10U | |
| • DOCSIS 3.1 MA5633 (cable outlets on a single side) : | D3.0/32D x 10U + D3.1/D2 x 2U + 64 SC-QAM | |
| • DOCSIS 3.1 MA5633-DD20/XD20 (cable outlets on both sides) : | D3.0/32D x 10U + D3.1/2D x 2U + 64 SCQAM | |
Acronyms and Abbreviations
| BSoD | Business Services over DOCSIS | LDPC | Low Density Parity Check |
| CM | Cable Modem | MSO | Multiple Systems Operator |
| CMC | Cable Media Converter | ODN | Optical Distribution Network |
| CMTS | Cable Modem Terminal System | OFDM | Orthogonal Frequency Division Multiplexing |
| CNR | Carrier-to-Noise Ratio | OFDMA | Orthogonal Frequency Division Multiple Access |
| D-CCAP | Distributed-Converged Cable Access Platform | OSS | Operations Support System |
| DOCSIS | Data over Cable Service Interface Specification | PNM | Proactive Network Maintenance |
| EQAM | Edge Quadrature Amplitude Modulation | QAM | Quadrature Amplitude Modulation |
| FTTH | Fiber to The Home | VPN | Virtual Private Network |
