Method for dynamically allocating wavelengths based on PON system

Abstract

A method for dynamically allocating wavelengths based on a PON system comprises the following steps of: S1, a G / EPON system local side device OLT and a terminal device ONU perform an initialized dynamic discovery process through a standard IEEE802.3OAM or ITU-T OMCC channel; S2, when the local side device OLT detects specific ONU device, negotiation of a wavelength channel is carried out through an extended dynamic communication wavelength protocol EDWP based on MPCP or PLOAM, and idle wavelengths which are not used yet are selected as exclusive wavelengths of the ONU device; S3, the local side device OLT is responsible for maintaining and recycling idle wave bands; and S4, the local side device OLT and the terminal device ONU perform subsequent registration authentication interaction andservice flow in the new wavelength channel. According to the invention, partial functions of the WDM-PON are realized, and the realization difficulty and requirements of the ONU laser are reduced; thebandwidth of the current G / EPON system can be directly improved from the current 2.5 / 1 / 25G throughput sharing mode to 2.5 / 1 / 25G exclusive use of single-terminal ONU device; and the method is completely compatible with the original G / EPONONU, and the G / EPONONU and the EPONONU share bandwidths and do not influence each other.

Description

technical field [0001] The present invention relates to the field of G / EPON communication access network, and specifically relates to a method for dynamically allocating wavelengths based on the PON system, especially in the context of reducing fees and speeding up the current access broadband network, combined with the unequal growth of bandwidth in the field of basic communication networks And performance requirements, can greatly improve the end user's access broadband under the premise of minimally increasing costs. Background technique [0002] Currently existing WDM-PON and other technologies, due to the technical requirements of the WDM architecture itself for wavelength division multiplexing and demultiplexing, as well as the high index requirements for terminal colorless optical devices, the cost remains high, resulting in the current access network field Large-scale commercial use is still G / EPON equipment. Contents of the invention [0003] The technical prob...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a method for dynamically allocating wavelengths based on the PON system, aiming at the complexity and cost factors of the current access network field, limited to DWM-PON and other technologies, aiming at G / EPON The realization of WDM technical functions and performance indicators in the existing technology can directly upgrade the bandwidth of the current G / EPON system from the current 2.5 / 1 / 25G throughput sharing mode to the exclusive use of 2.5 / 1 / 25G for single-terminal ONU equipment; It is fully compatible with the original G / EPON ONU, each sharing the bandwidth without affecting each other

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