Authorization discovery method and device

Abstract

The invention provides an authorization discovery method and a device. The method comprises the steps of before the arrival of a Gate Discovery period of an OLT in an EPON, determining currently available uplink time slices according to the uplink transmission time slices of a preset EPON physical link and uplink transmission time slices that have already been allocated to registered ONUs; selecting all the currently available uplink time slices or one part of the currently available uplink time slices as Grant time-slot slices to be applied during the Gate Discovery period; according to the length of each Grant time slot, calculating the number of Grant time slots contained in each Grant time-slot slice applied during the current Gate Discovery period and determining the Grant time-slot selection algorithm; and broadcasting the initial time of each Grant time-slot slice and the number of Grant time slots contained in the above Grant time-slot slice to the outside in the form of a Gate Discovery message by the OLT based on the Grant time-slot selection algorithm. According to the technical scheme of the invention, the success rate of the ONU registration is improved.

Description

technical field [0001] The present application relates to the technical field of EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network), in particular to an authorization discovery method and device in EPON. Background technique [0002] For the convenience of understanding, the following description is first given: [0003] EPON: It is an Ethernet-based PON (Passive Optical Network, Passive Optical Network) technology. It adopts point-to-multipoint structure, passive optical fiber transmission, and provides multiple services on Ethernet. [0004] OLT (Optical Line Terminal, Optical Line Terminal): It is a switch or router, which is a multi-service platform, which provides an optical fiber interface for passive optical networks, that is, a PON interface. [0005] ONU (Optical Network Unit, Optical Network Unit): It is an access layer device that connects user hosts to the EPON network through optical fiber interfaces. [0006] EPON is an important techn...

AI Technical Summary

Problems solved by technology

However, the maximum number of ONUs theoretically supported by each PON port of the OLT can reach 32K, and the distribution distance between the ONU and the OLT is within 20KM. Part of the uplink sending time of the allocated EPON physical link, the length is limited

Especially in areas where ONUs are relatively concentrated, the distance is similar and the number is large, the probability of collisions between ONUs competing to initiate registration requests is greatly increased, which seriously affects the online speed of ONUs

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