Method for multicast implementation of switch-in layer network in IPTV system
A technology for network implementation and system implementation, which is used in transmission systems, digital transmission systems, data exchange networks, etc.
Inactive Publication Date: 2008-06-25
ZTE CORP
View PDF0 Cites 21 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0042] In order to solve the disadvantages of the traditional technical solutions, the present invention further elaborates the method for implementing multicasting in the access layer network in an IPTV system according to the present invention through the following specific examples. The specific implementation will be described in detail below, but it is not intended as Limitations on the 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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method which can ensure an access layer network in an IPTV system to implement multicast. The method includes the steps that a DSLAM acquires the password information of a set-top box account, and transmits the password information to BRAS for authentication judgment, the BRAS is connected with the DSLAM through the set-top box; when the user requests a certain media flow information in the IPTV operation, the set-top box sends request information to the DSLAM, and transmits the request information to the BRAS; the BRAS captures the request information and judges; when the BRAS responds allowance to join, the DSLAM judges whether the address is contained in the received multicast code flow; when being not, a broadband router sends the request information to an aggregation layer network, the aggregation layer network sends a corresponding multicast group to the broadband router, and a broadband transmits the multicast group to the DSLAM, the DSLAM duplicates the multicast group; a port number connected by the set-top box establishes a correspondence relationship with the multicast group, and sends the multicast code flow to the set-top box for decoding and playing. The invention solves 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 Internet Television) service bearer network, in particular to a method for realizing multicasting on an access layer network in an IPTV system. Background technique [0002] According to the definition of "China Telecom IPTV Service Specification", IPTV services mainly include 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 provides users...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L12/56H04L29/06H04N21/6405
Inventor 李凤军
Owner ZTE CORP