Method of Discovering Services Provided by a Network Repository Function

A method of registering a service provided by a network function (NF) in a Service Based Architecture (SBA) based telecommunication network in a Network Repository Function (NRF) comprised by the telecommunication network, the method comprising the NF:

• transmitting a service registration request to the NRF, wherein the service registration request comprises a service name, a service address, and a plurality of selection rules, with each selection rule defining a further, distinct, service address and a precondition for applying the selection rule, and wherein the plurality of selection rules is associated with a prioritization order for determining which of the plurality of selection rules apply when multiple preconditions are met;
• and
• receiving, from the NRF, a service registration response thereby indicating that the service is registered at the NRF.

A network function (NF) configured to register a service provided by the NF in a Service Based Architecture (SBA) based telecommunication network in a Network Repository Function (NRF) comprised by the telecommunication network, wherein the NF comprises:

• transmit circuitry configured to transmit a service registration request to the NRF, wherein the service registration request comprises a service name, a service address, and a plurality of selection rules, with each selection rule defining a further, distinct, service address and a precondition for applying the selection rule, and wherein the plurality of selection rules is associated with a prioritization order for determining which of the plurality of selection rules apply when multiple preconditions are met;
• and
• receive circuitry configured to receive, from the NRF, a service registration response thereby indicating that the service is registered at the NRF.

A non-transitory computer readable recording medium storing a computer program product for registering a service provided by a network function (NF) in a Service Based Architecture (SBA) based telecommunication network in a Network Repository Function (NRF) comprised by the telecommunication network;

• the computer program product comprising program instructions which, when run on processing circuitry of the NF, causes the NF to:
• transmit a service registration request to the NRF, wherein the service registration request comprises a service name, a service address, and a plurality of selection rules, with each selection rule defining a further, distinct, service address and a precondition for applying the selection rule, and wherein the plurality of selection rules is associated with a prioritization order for determining which of the plurality of selection rules apply when multiple preconditions are met;
• receive, from the NRF, a service registration response thereby indicating that the service is registered at the NRF.