Method for controlling the admission of slices into a virtualized telecommunication network and the congestion likely to be generated between services instantiated on said slices

A method for controlling the admission of slices in a virtualized telecommunications network having a core network and a radio access network RAN and the congestion generated by services having different priorities instantiated on said slices and likely to share a given quantity of resources, the method comprising:

• defining a priority scale to be assigned to the slices,
• defining a low priority threshold,
• determining a quantity of available and used network resources sp(t) and xp(t),
• determining the quantity of resources allocated to slices with a priority lower than the low priority threshold and which may be temporarily assigned to new slices with a priority higher than said threshold in order to meet a quality of service requirement of the slices with the priority higher than said low priority threshold, and
• determining the slices likely to be accepted into the network, taking into account the available resources and priority of the slices,
• wherein the method further includes
• controlling a request sg(t) for at least one slice with guaranteed services, GS, and a request sb(t) for admission of at least one slice with best effort, BE, services, and controlling congestion of the services instantiated on said slices, and
• observing at each instant t by processing circuitry, a queue of slice requests sg(t) and sb(t) as well as the available and used resources sp(t) and xp(t) and reducing a resource allocated to the at least one BE slice with a priority below the low priority threshold so as to increase acceptance into the network by the processing circuitry of the at least one GS slice with a priority above the low priority threshold.