A method of changing IPTV playback address pool based on SDN technology

Abstract

A method for changing an IPTV broadcast address pool based on SDN technology, the steps are as follows: add an SDN switching device and a multicast IP address change server between a multicast source and a multicast transmission switching network; generate a multicast according to user-defined IP change rules IP address pool change script, and set the execution time rules of the script; the multicast IP address change server executes the script within the specified time according to the execution time rules, and controls the SDN switching device to modify the flow table, thereby modifying the multicast IP address pool; notify the EPG The server updates the multicast IP address corresponding to each channel program, and sends the channel list to the set-top box; the online set-top box receives the video signal according to the multicast IP address corresponding to the channel in the channel list. The invention can solve the problems of large workload and error-prone modification of the IP address modification of the signal source server; it can also realize the digital TV conditional reception technology by changing the multicast IP address regularly at high frequency.

Description

technical field [0001] The invention relates to the technical field of digital TV network transmission, in particular to a method for regularly and rapidly changing an IP-based digital TV playback address pool through an SDN switching device to realize digital TV conditional reception technology. Background technique [0002] With the advancement of digital TV network transmission technology, most radio and television systems and telecom operators adopt an all-IP TV signal transmission mode. From the input of information sources, signal content processing and scheduling, and signal output broadcast to achieve any point-to-multipoint network connection mode, that is, when a certain network node sends data to a group of network nodes, it does not need to send data to every network node, but only needs to send the data to a specific All network nodes that join the group can receive this data. In this way, for the sender, the data can be sent to all receivers only once, which g...

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Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present invention aims to modify the multicast IP address pool on the multicast transmission switching network by using SDN switching equipment to periodically execute a predetermined IP address change script, thereby solving the problem of modifying the IP address of the signal source server. The workload is heavy and error-prone; and the digital TV conditional reception technology is realized by changing the multicast IP address regularly at high frequency, which can make up for the leakage of the original multicast address, reduce the impact of the multicast address leakage, and increase the risk of criminals. Profit cost and difficulty

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