Method of processing a data packet relating to a service

A system (300) for processing a packet, designed to process a data packet relating to a service, said packet being conveyed by an interconnection gateway (10) between a mobile communication network (100) and a packet communication network (200), destined for said packet communication network, said system comprising at least one virtualized node (31-32, 41-43, 51, 61-63, 80), said at least one virtualized node comprising at least one hardware component configured to:

• analyzing the received data packet and based on this analysis, obtain an identifier of the service to which the packet relates;
• obtain on request, said request comprising the service identifier, from an elementary network functions control entity, a sequence in the form of at least one elementary network function list so as to process said packet;
• and the first network elementary function of the sequence corresponding at the first iteration to a current function:
• apply the current function to the input packet so as to obtain an output packet;
• verify whether there exists a next function following the current function in the sequence, and if appropriate,
• select, when there exists a next function following the current function in the sequence, a next virtualized node designed to implement said function following the current function in the sequence, said next function then becoming current function;
• dispatch, when there exists a next function following the current function in the sequence, an output packet to a node selected by the selection module, the output packet thus becoming input packet for the application of the current function and designed to, when there does not exist any next function following the current function in the sequence, to transmit the output packet to the packet communication network.

A non-transitory computer-readable recording medium readable by an elementary network functions control entity on which comprising a program is recorded, the program for an elementary network functions control entity, comprising program code instructions intended to drive execution of steps of a method that are implemented by an elementary network functions control entity, when said program is executed by said entity, the method comprising:

• transmitting an identifier of a service for receipt based on analysis of a data packet;
• and
• transmitting a lookup table of correspondence between at least one service and a sequence in the form of at least one elementary network function list so as to process a packet relating to a service, upon the establishment of a user session between a user terminal and the interconnection gateway;
• in which said lookup table of correspondence is determined by the elementary network functions control entity as a function of a profile associated with the user terminal.