Passive optical network aggregation node device and system

Abstract

The invention discloses a passive optical network convergent node device, which comprises a convergent optical line terminal which is used to be connected with a user side optical network unit, is used to converge service sent by the user side optical network unit, and is used to send the converged service to a convergent optical network unit, and the convergent optical network unit which is used to send received converged services to a network side light circuit terminal unit. The embodiment of the invention also discloses a passive optical network system. The embodiment of the invention can be applied to support traditional time division multiplex services and also can support services and multicast services on the basis of variable-length data packets, a light distributing network in the middle does not need to build a machinery room or a power supply, and the network building and operation cost can be greatly reduced.

Description

technical field [0001] The invention relates to passive optical network technology, in particular to a passive optical network convergence node device and system. Background technique [0002] Fiber to the home (FTTH, Fiber To The Home) is the technology direction that people have pursued and explored continuously in the past 20 years, but due to obstacles in cost, technology, demand, etc., it has not been promoted and developed on a large scale so far. In recent years, due to the development of passive optical network (PON, Passive Optical Network) technology, there is no need for node equipment at the optical branch point, only a simple optical splitter needs to be installed, making FTTH network become a research hotspot again, stepping into the A period of rapid development. With the continuous introduction of new equipment and new network construction plans, it is expected that the FTTH network will have greater development in the next few years. [0003] Optical Acces...

AI Technical Summary

Problems solved by technology

[0016] In the prior art, since PON technology is based on connection and ETH technology is based on connectionless, the coordination between the connection-based PON-Based network and the connectionless ETH-Based convergence network is poor; in addition, ETH-Based convergence The network does not have a strict quality of service (QoS, Quality of Service) mechanism and operation, maintenance and management (OAM, Operation, Administration and Maintenance) mechanism, so it cannot support some services, especially for time division multiplexing (TDM, Time Division Multiplexing) or based on Session (Session) business, in order to solve this problem, adopt the ETH-Based convergence network of various analog connection characteristics in the prior art

[0017] For example, an ETH-Based convergence network based on Provider BackboneTransport (PBT, Provider BackboneTransport) technology is currently proposed to simulate connections, adding connection management and configuration functions for PBT networks, and in PBT virtual local area networks (VLAN, In the Virtual Local Area Network), the medium access control (MAC, Medium Access Control) address learning and spanning tree protocol are closed, and the broadcast, multicast and broadcast functions of unknown messages are closed, but this makes Ethernet lose some of its original advantages. features, but also reduces the user experience; moreover, through the use of technological enhancements, the complexity of the mutated ETH increases sharply, and it does not conform to the characteristics of ETH

[0018] In addition, a convergence network based on Multi-Protocol Label Switching (MPLS, Multi-Protocol LabelSwitching) is currently proposed to support connections, but another problem is that MPLS does not support multicast functions, which reduces user experience

[0019] Furthermore, the ETH-Based aggregation network is an active network, and it is necessary to rent land for all aggregation network node equipment between the OLT and the IP network edge node to build a computer room, configure battery packs and uninterrupted power system (UPS, Uninterrupted Power System), Make network construction and operation cost high

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