Group broadcast data distributing method and data distributing device and terminal for realizing said method
A multicast data and terminal technology, which is applied in the branch office to provide special service devices, data exchange details, etc., can solve the problems of not being able to know the multicast group immediately, affecting the timeliness of messages, and the burden on the server, so as to save resources and timeliness Strong and flexible delivery mechanism
Active Publication Date: 2008-05-07
HUAWEI TECH CO LTD
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[0007] However, in the existing multicast data distribution method, which multicast group to join is determined by the terminal, and the head-end data is in a state of passive request
This method has the following disadvantages: when there is an urgent message to be sent at the head end, a multicast group needs to be established, and the multicast group is notified through the EPG (Electronic Program Guide, Electronic Program Guide). When the user calls the EPG After seeing it, you can request to join
However, when a new multicast group is created, the terminal cannot immediately know the existence of the multicast group and accept the message, which affects the timeliness of the message
[0008] In addition, in another case, when a user orders media content (video, audio, etc.) on the head-end server for another group of users, and these users are in different multicast groups, the existing method is Use unicast to send on-demand content to each user in this group. When there are a large number of users or a large amount of media content to be sent, unicast will cause a great burden to the network and also to the server.
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[0032] The present invention provides a method for sending multicast data, the core idea of which is to change the way that the existing head end passively waits for the terminal to send an IGMP (Internet Group Manage Protocol, Internet Group Management Protocol) request, and the head end actively sends the join request to the target terminal. The message of the multicast group, and then determine whether to send multicast data to the terminal according to the response of the terminal.
[0033] An implementation process of the method of the present invention is described in detail below. Such as figure 1 shown, including the following steps:
[0034] 1) The head end receives input information, which usually includes user name or region name and other content that can be used as a basis for terminal identification, and may also include content to be broadcast or an indication of the content to be broadcast;
[0035] There are usually two ways to generate input information: ...
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The present invention discloses a flexible multicasting data down sending, device and terminal to realize said method. It contains active notifying terminal adding one multicasting group through head end, and according to selected return message to establish multicasting group, to on time transmit content to terminal in as far as possible saving resource mode. Above-mentioned mode can also realize one-to-many ordering status through multicasting mode. The present invention provided data transmission technique is suitable in broadband internet based media platform IPTV.
Description
technical field [0001] The present invention relates to the technical field of Internet Protocol Television (IPTV), a media platform based on broadband Internet, in particular to a multicast data distribution method and a data distribution device and terminal for realizing the method. Background technique [0002] IPTV is a personalized and interactive media platform provided based on a broadband IP (Internet Protocol, Internet Protocol) network. It utilizes but is not limited to access broadband networks such as ADSL or Ethernet to provide rich interactive multimedia services to computers, TVs and other end users. In an IP network, there are mainly several transmission methods for data: [0003] For unicast transmission, the sender and each receiver need an independent data channel. This method is also the most common mode of network two-way communication. [0004] Broadcast (Broadcast) transmission, the sender and receiver share a data channel. In this way, the source ...
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IPC IPC(8): H04L12/18
Inventor 颜俊贤
Owner HUAWEI TECH CO LTD