Authorization discovery method and device

A technology for discovering methods and algorithms, applied in the field of EPON, which can solve problems such as affecting the online speed of ONU, limited length, and difficulty in meeting requirements

Active Publication Date: 2019-01-08
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Authorization discovery method and device

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] figure 1 The authorization discovery method flowchart in the EPON that an embodiment of the present application provides, its specific steps are as follows:

[0025] Step 101: When the Gate Discovery period arrives, the OLT in the EPON determines the currently available uplink time slot according to the preset uplink transmission time slot of the EPON physical link and the uplink transmission time slot allocated to the registered ONU, and selects the current All or part of the available uplink time slots are used as Grant (authorization) time slots used in this Gate Discovery cycle. According to the length of a single Grant time slot, calculate the number of Grant time slots included in each Grant time slot used in this Gate Discovery cycle. number.

[0026] Step 102: The OLT broadcasts the Grant slot selection algorithm, the...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04J3/06
CPCH04J3/0635H04L63/0892H04L65/1073
Inventor 宋小恒
Owner NEW H3C TECH CO LTD
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