NGA Passive Optical Network Protocol Convergence
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Solution Overview
Problem
Current IEEE EPON specifications do not support GPON-based communication protocols, leading to market segmentation and a need for new methods and systems that enable coexistence and compatibility between different PON specifications.
Innovation Solution
The development of Next Generation Access (NGA) methods, systems, and protocols that allow for the coexistence and convergence of NGA GPON with IEEE802.3av 10 GEPON, including a mutual control protocol and media access control (MAC) for NGA units, enabling backward compatibility with GPON and compatibility with EPON and 10 GEPON, and supporting symmetrical and asymmetrical NGA modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current IEEE EPON specifications are used, then EPON and 10 GEPON equipment can operate, but GPON-based communication protocols are not supported, leading to market segmentation
Solution Approach 1:
The patent implements a universal control plane that supports multiple PON protocols (GPON, EPON, 10G-EPON) through a common architecture. The OLT and ONU devices are designed with multi-functional capabilities to handle different protocol types, allowing a single system to serve multiple protocol requirements without requiring separate dedicated equipment for each protocol type.
Solution Approach 2:
The patent segments the PON system into distinct control plane and data plane functions. The control plane is further segmented into protocol-specific control entities that can be independently configured. This segmentation allows the system to maintain protocol-specific processing requirements while sharing common infrastructure resources, thereby supporting multiple protocols without proportionally increasing overall system complexity.
2Adaptability or versatility
If separate protocols are maintained for different PON types, then each protocol can be optimized independently, but coexistence and convergence between NGA GPON and IEEE802.3av 10 GEPON cannot be achieved
Solution Approach 1:
The patent introduces a protocol abstraction layer that acts as an intermediary between the physical transmission medium and protocol-specific processing. This abstraction layer provides standardized interfaces and translation mechanisms that enable different PON protocols to coexist on the same network infrastructure. The intermediary layer handles protocol conversion and coordination, allowing NGA GPON and IEEE802.3av 10 GEPON to converge without requiring complex direct integration between protocol stacks.
3Reliability
If legacy equipment is supported, then backward compatibility is maintained, but integration with NGA units requires additional control mechanisms
Solution Approach 1:
The patent implements dynamic protocol selection and adaptation mechanisms that allow the system to automatically adjust its operating mode based on the capabilities of connected devices. When legacy equipment is detected, the system dynamically switches to appropriate legacy protocol modes while maintaining backward compatibility. For NGA units, the system dynamically activates enhanced control mechanisms. This dynamic behavior allows the system to handle mixed legacy and NGA equipment without requiring permanently complex control protocols for all scenarios.
Data Source
AI summary
Methods and apparatuses for controlling transmission of converged data packets and for media access through a single next generation access (NGA) passive optical network (PON) which can coexist with EPON and GPON based systems and can interoperate with a 10 GEPON. A converged data packet is transmitted between a first node and a second node of the NGA network under NGA management control. The converged packet has a format which unifies a GEM header with the 10 GEPON preamble header and certain fields replaced in a EPON packet format to accommodate information corresponding to the preamble elements of a GEM packet. The converged data can be encoded in the line code of the 10 GEPON protocol, allowing use of a control protocol based either on MPCP or GTC for the NGA. Node apparatuses include NGA elements which enable preparation, encoding/decoding and transmission of converged packets.