FIELD: communication.
SUBSTANCE: invention relates to a method for communication, implemented in a first network function (NF) in a network system. To achieve the technical result, the method comprises the stages of: receiving, from the third NF, information on the degree of communication of the third NF, or receiving, from the sub-instance of the third NF, information on the degree of communication of the sub-instance of the third NF, wherein the received information on the degree of connection is received through a registration request, wherein the third NF or the sub-instance of the third NF is a provider of a network service subject to registration by means of a registration request; storing the received information on the degree of communication in the first NF; wherein the information on the degree of communication comprises at least one of the following: information on the data transmission centre; information on network topology; and information on the geographic location of the third NF or the sub-instance of the third NF; receiving, from the second NF, a service detection request, wherein the service detection request comprises information on the degree of communication of the second NF; wherein the information on the degree of communication of the second NF comprises at least one of the following: information on the data centre; information on network topology; and information on the geographic location of the second NF; and sending, to a second NF, a response to the service detection request, wherein the response to the service detection request comprises information of at least one third NF or at least one sub-instance of the third NF.
EFFECT: ensured service detection.
13 cl, 22 dwg, 1 tbl
