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Controllable multicast system under environment of passive optical network, and implementing method

A technology of a passive optical network and its implementation method, which is applied in the field of controllable multicast systems, can solve problems such as inability to control user rights and inability to accurately control user port access to multicast streams, etc., to achieve reduction in multicast bandwidth, simple structure, Effects with uncomplicated control interfaces

Inactive Publication Date: 2007-12-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] Although the above multicast solution can correctly deliver the multicast stream to the ONU, it cannot control the user's authority
When there are multiple users (ports) under the ONU, the ONU or OLT cannot accurately control the access of the user port to the multicast stream

Method used

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  • Controllable multicast system under environment of passive optical network, and implementing method
  • Controllable multicast system under environment of passive optical network, and implementing method
  • Controllable multicast system under environment of passive optical network, and implementing method

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Embodiment Construction

[0054] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0055] As shown in Figure 1, this system mainly includes two types of hardware devices: OLT and ONU. There are multiple user virtual channels between the OLT and ONU, and each user virtual channel corresponds to a user port on the ONU. There is also one or more unidirectional multicast virtual channels between the OLT and the ONU. The PON port of each OLT has one or more multicast virtual channels, which are shared by all ONUs under the PON port. The virtual channel numbers of user virtual channels and multicast virtual channels are unique on the OLT. Multicast virtual channels carry multicast streams, user virtual channels carry IGMP protocol packets, and service channels and control channels are separated. Whenever there is a request for the user virtual channel, the OLT will judge the authority and send the control information to the ONU through the PO...

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Abstract

The system comprises: optical line terminal (OLT) and optical network unit (ONU). Said OLT is used for transmitting the multicast service stream to ONU; said ONU is used for receiving the multicast service stream and replay the multicast server stream to user; said OLT is also used for making decision for user's right, and according to the decision result sending the control message to ONU; according to the received control message ONU makes relevant setting for the multicast service stream so as to control the user's port accesses to the multicast virtual channel. The invention also reveals method thereof.

Description

technical field [0001] The present invention relates to a multicast system for accessing a communication network, in particular to a controllable multicast system in a PON (Passive Optical Network, Passive Optical Network) environment and an implementation method thereof. Background technique [0002] With the vigorous development of broadband access, more and more families use broadband Internet services. At the same time, more and more services have entered the home, among which the multicast service is the most important one. [0003] Like other multimedia services, multicast has a very large demand for bandwidth. However, the bandwidth of many access technologies is close to the limit, which cannot meet the high bandwidth requirements of future home and business users. PON uses optical transmission technology, with long transmission distance and large transmission bandwidth. Due to the use of passive nodes, the maintainability, availability, and stability of PON have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/16H04B10/12H04Q11/00
CPCH04L12/2863
Inventor 王德强曾涛
Owner ZTE CORP
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