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Multicast method, system and access apparatus of specific source

An access device and source-specific technology, applied in the direction of transmission systems, digital transmission systems, branch offices to provide special services, etc., can solve problems such as non-compliance, inability to select different channels of the same program, etc.

Inactive Publication Date: 2009-01-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, users can still only select different programs, but not different channels of the same program
This defeats the purpose of the source-specific multicast method

Method used

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  • Multicast method, system and access apparatus of specific source
  • Multicast method, system and access apparatus of specific source
  • Multicast method, system and access apparatus of specific source

Examples

Experimental program
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Embodiment Construction

[0064] The source-specific multicast method of the present invention relates to: one or more servers serving as service multicast sources, a core network supporting source-specific multicast services, compatible with source-specific multicast and source-independent multicast in a source-specific multicast system Access devices with two service modes and users who can join source-independent multicast and source-specific multicast modes; Information about all channels of the access device. The announced information should at least include: the address of the multicast group carrying the program, the address of the source server, and the content summary of the program. The access device transparently transmits the channel information issued by the core network to the source-specific multicast user, and the source-specific user orders the channel and joins the SSM mode multicast channel. Or, the access device converts the channel information issued by the core network into fake p...

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Abstract

The invention provides a multicast method with specific source, relates to one or more service multicast sources, supports the core network of a source specific multicast service, is compatible with access devices with the two service models of source specific multicast and source independent multicast, and at least relates to a source independent user who joins in the source independent multicast model; the method comprises that: the core network bears at least one multicast group by a source specific multicast method and notifies all the channel information to the access devices; aiming at the source independent user, the access devices uniquely map each channel to one element in a pseudo program set, and all the elements in the pseudo program set are packaged as pseudo program information to be notified to the source independent user; the source independent user clicks the programs in the pseudo program information, and then group report message is sent to the access devices; the access devices reversely map each group entry of the report message into a channel entry, and channel entry message is sent to the core network. The multicast method has the advantages that user control capability is enhanced and the complex degree of source discovery process is effectively reduced.

Description

technical field [0001] The invention relates to network point-to-multipoint multicast communication technology, in particular to source-specific multicast method, system and access equipment for realizing the multicast method. Background technique [0002] Multicast refers to a point-to-multipoint communication form in which the source sends information to a certain subset of all network nodes. There are mainly three network element entities in its application: multicast router, multicast source and multicast receiver (user). Run the Internet Group Management Protocol (IGMP, Internet Group Management Protocol) (IPv4) / Multicast Listener Discovery (MLD, MulticastListener Discovery) protocol (IPv6) between the multicast router and the multicast receiver, the user runs the host side protocol, Routers run network-side protocols. A sparse mode independent multicast protocol (PIM-SM, Protocol Independent Multicast-Sparse Mode) is usually run between the multicast routers to maint...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L12/56H04L29/06H04L45/16
Inventor 沈洋
Owner ZTE CORP
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