Method and system for downloading in multicast way in ubiquitous network

A multicast and multicast channel technology, applied in transmission systems, digital transmission systems, and devices that provide special services in branch offices, etc., can solve the problem that service streams cannot be obtained, IP multicast methods cannot be applied, and multi-mode and multi-interface cannot be obtained. network capacity and other issues to achieve the effect of fast media download and quality assurance
CN102413069AInactive Publication Date: 2012-04-11ZTE CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZTE CORP
Publication Date
2012-04-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for downloading in a multicast way in a ubiquitous network. The method comprises the following steps that: after making a request of downloading a media service, a terminal acquires the address of a cache server corresponding to the media service from a tracking server, and makes a request of transmitting the media service to the cache server; after receiving the request, the cache server triggers a context server to judge whether multicast triggering conditions are met or not according to a preset multicast terminal threshold value; if the multicast triggering conditions are met, the cache server determines a plurality of terminals and a multicast channel which participate in multicast in combination with the context server and a joint wireless resource management server; and the cache server transmits the data of the media service to each terminal on the multicast channel through a resource control node. The invention also discloses a corresponding system. By the method and the system, wireless resources can be fully utilized, the rapid media downloading of a user can be realized, and lost packets and missing video parts are subjected to point-to-point compensation at the same time to ensure the quality of downloaded media data.
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Description

technical field

[0001] The invention relates to a multicast technology in a ubiquitous network collaborative environment where multiple heterogeneous networks are integrated, in particular to a method and system for downloading in a ubiquitous network through multicast. Background technique

[0002] According to the formulation of the current ubiquitous network-related standards and industry research, the entire ubiquitous network collaboration architecture is recognized as being divided into the perception extension layer, the network / service layer and the application layer. Among them, there are many kinds of terminals in both the perception extension layer and the application layer, and these terminal devices can be roughly divided into two categories: one is the terminal group managed by the gateway, through Universal Plug and Play (UPNP) Various protocols such as various protocols realize the interconnection and intercommunication of devices, and the gateway is connecte...

Claims

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