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System for multicast implementation of switch-in layer network in IPTV system

A network implementation and access layer technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems that cannot adapt to large-scale IPTV business development

Inactive Publication Date: 2010-07-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The access layer and the convergence layer are mainly connected by Broadband Network Access Server (BRAS, Broadband Network Access Server). If the access layer adopts IP multicast mode, the multicast implementation method is: perform multicast control on the access server and content replication, due to the data processing capability of broadband access server nodes, it cannot adapt to large-scale IPTV business development, and the development of IPTV services based on BRAS is only suitable for broadband networks accessed by PPPoE (PPP over Ethernet) technology. The broadband network accessed by Dynamic Host Configuration Protocol (DHCP, Dynamic Host Configuration Protocol) technology is not applicable

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Embodiment Construction

[0042] In order to solve the disadvantages of the traditional technical solutions, the present invention further elaborates the system for implementing multicasting in the access network of an IPTV system according to the present invention through the following specific examples. Limitations of Invention.

[0043] Such as figure 1 As shown, the existing broadband access layer network system described in the prior art of the present invention includes: a set-top box, an ADSL modem (modem) and a BRAS device. Among them, the BRAS equipment is connected with the aggregation layer router in the existing broadband network.

[0044] In the entire access network of the existing broadband access network system, the set-top box is connected to the ADSL modem by Ethernet, the ADSL modem is connected to the broadband access server (BRAS) at the central office by telephone lines, and the set-top box adopts PPPoE mode through ADSL Dial-up connection to BRAS.

[0045] The structure and te...

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Abstract

The invention discloses a system which can ensure an access layer network in an IPTV system to implement multicast. The system is used in the prior broadband access layer network for connecting with a broadband aggregation layer network. The invention includes a set-top box, a broadband access server, a broadband router, and a digital subscriber line circuit access server. By the system combinedby the devices, the system provided by the invention can solve the technical weakness of realizing access layer network multicast by a PPPoE method or a DHCP method on the basis of BRAS.

Description

technical field [0001] The invention relates to an IPTV (Interactive Network Television) service bearer network, in particular to a system for realizing multicasting in an access layer network in an IPTV system. Background technique [0002] According to the definition of "(China Telecom's IPTV Service Specifications), IPTV services mainly include video-on-demand, broadcasting, games, information services, broadcast program reservation (PVR), communication services, distance education, music / karaoke, interactive advertising, set-top box Internet browsing, etc. According to the characteristics of functional operation, the business can be divided into four categories: communication services, streaming media services, game services and information services. [0003] The communication service category includes video communication and text messaging. IPTV video communication is provided based on China Telecom's public video service, and China Telecom's public video network provi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L12/56H04L29/06H04N21/6405
Inventor 李凤军
Owner ZTE CORP