Abstract: A mobility management apparatus (10) is a mobility management apparatus that establishes a communication connection, via a network connected on the basis of cooperation between communication providers in a roaming country and a home country which has a plurality of time zones, with a connection destination that is selected from a plurality of session management apparatuses in the home country, the mobility management apparatus including at least one processor (C1), the at least one processor (C1) carrying out a selection process (S11) for selecting the connection destination, on the basis of time zone information indicating a time zone to which each of the plurality of session management apparatuses belongs.

Abstract: A management system includes a first management node configured to instruct a second management node to perform processing for managing resources for a virtualised network function and the second management node configured to perform, in response to an instruction from the first management node, the processing for managing the resources for the virtualised network function. In the management system, when the second management node is in congestion, at least one of the first management node and the second management node performs processing for suppressing communication traffic between the first management node and the second management node.

Abstract: A management system includes a first management node configured to instruct a second management node to perform processing for managing resources for a virtualised network function and the second management node configured to perform, in response to an instruction from the first management node, the processing for managing the resources for the virtualised network function. In the management system, when the second management node is in congestion, at least one of the first management node and the second management node performs processing for suppressing communication traffic between the first management node and the second management node.