Patent ID: 9143354
Filing Date: 2015-09-22
Classification: H04L

Abstract:
1. A method of transmitting at least one data stream of a multimedia session through a distributed telecommunications network comprising at least one network core comprising a plurality of nodes interconnected by a plurality of links, each node of the network having a routing module, the session being established between a first terminal and at least one second terminal outside the network core, and the network core also comprising at least two border modules, making up points of access to the network core for the first and second terminals, wherein the method comprises: determining, by the border modules, information relative to the routing topology and the status of the links of the network, necessary for the transmission of data streams of the session; determining, by a border module addressed by the first terminal, parameters of the session comprising a length of the session and flow constraints for the streams of the session in the network core; selecting, by the addressed border module, when the data streams must pass through the network core, of an input border module and an output border module of the network core for the streams, as a function of the stream flow constraints and the predetermined session parameters, and the information relative to the routing topology and the status of the links; predetermining a path, from the input border module to the output border module, for all of the streams of the session, through the network core, as a function of the flow constraints of the streams and the information relative to the routing topology and the status of the links, and as a function of optimization objectives for the network core; establishing resources necessary to satisfy the flow constraints along the path and the optimization objectives, and definition of routing rules with routing modules situated along the path; and transmitting the streams of the session only using the predetermined path.