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Control method, equipment and system for passive optical network multicast access

A passive optical network and access control technology, applied in the field of passive optical networks, can solve the problem of downlink bandwidth multicast occupation, affecting other services, etc., to ensure the effect of normal transmission

Active Publication Date: 2010-08-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a control method, device and system for passive optical network multicast access, which overcomes that the existing passive optical network multicast access control may cause all downlink bandwidth to be blocked. Disadvantages of multicast occupation and impact on other services

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  • Control method, equipment and system for passive optical network multicast access
  • Control method, equipment and system for passive optical network multicast access
  • Control method, equipment and system for passive optical network multicast access

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Embodiment Construction

[0026] The present invention provides a control method, device and system for passive optical network multicast access. Optical line terminal (OLT) supports multicast service, multicast management protocol and multicast control function, and optical network terminal (ONT) supports group broadcast services and multicast management protocols. The optical network terminal (ONT) sends a multicast access request to the optical line terminal (OLT), and the optical line terminal (OLT) processes the multicast access request. When access is allowed, the optical network terminal (ONT) receives the multicast stream forwarded by the optical line terminal (OLT).

[0027] FIG. 2 is a schematic diagram of a method for controlling multicast access to a passive optical network according to Embodiment 1 of the present invention. The specific steps of controlling the multicast access of the passive optical network in this embodiment are as follows:

[0028] Step 101: configuring multicast acce...

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Abstract

The present invention discloses a method for controlling passive optical network multicast access comprising that multicast access control information is collocated on an OLT; an ONT emits the multicast access requirements; the OLT receives the multicast access requirements; the OLT confirms whether the ONT is permitted to be accessed into the multicast according to the multicast access information; if being permitted, the OLT receives the multicast emitted by the multicast source and transmits the multicast to the ONT. Correspondingly, the present invention also discloses a device and a system for controlling the passive optical network multicast access. The OLT of the present invention controls the multicast access according to the multicast access information and the downlink band width can be prevented from being totally occupied by the multicast to ensure the normal transmission of other operations.

Description

technical field [0001] The present invention relates to the technical field of passive optical network, in particular to a control method, device and system for multicast access of passive optical network. Background technique [0002] Passive Optical Network (PON) is an optical access technology using a point-to-multipoint topology. As shown in Figure 1, it consists of an optical line terminal (OLT) on the office side, an optical network terminal (ONT) on the user side, Optical distribution network (ODN) composition. The so-called "passive" means that the ODN does not contain any active electronic devices and electronic power supplies, and is all composed of passive optical devices such as optical fibers and optical splitters / combiners (Splitter). [0003] The ODN divides one optical fiber into multiple paths, and the ONT shares the bandwidth. When the upstream business is from ONT to OLT, in order to avoid transmission conflicts, time division multiple access (TDMA) is u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04H20/69H04B10/20
CPCH04L12/2874H04L12/2861H04Q2011/0064H04L12/287H04L12/185H04Q11/0067H04Q2011/0073
Inventor 曲志军
Owner HUAWEI TECH CO LTD