Device and method for network slice admission control

A method performed by a first network node in a first network for admission control of at least one roaming user equipment (UE) for at least one network slice, wherein each of the at least one network slice is associated with at least one roaming budget allocated to roaming UEs from at least one second network, wherein the first network or the at least one second network is a mobile communication network, and wherein the method comprises:

• sending a first request to a second network node while the first network node is roaming to or located in the at least one second network, wherein the first request indicates one or more of the following:
• a proposed adjustment of the at least one roaming budget of at least one roaming related parameter;
• a request for a new budget of the at least one roaming budget of at least one roaming related parameter;
• or
• a request for the admission control of the at least one roaming UE for the at least one network slice;
• receiving a first response from the second network node, wherein the first response indicates one or more of the following:
• whether the second network node accepts or rejects the proposed adjustment of the at least one roaming budget;
• a new allocated roaming budget of at least one roaming related parameter;
• or
• whether the second network node accepts or rejects the requested admission control of the at least one roaming UE for the at least one network slice;
• and
• wherein the method comprises:
• receiving a subscription request from the second network node, wherein the subscription request indicates at least one subscription event;
• monitor the at least one subscription event;
• and
• determine whether to send a notification of the subscription request to the second network node.

A non-transitory computer-readable medium storing computer instructions, that when executed by one or more hardware processors, cause the one or more hardware processors to perform operations comprising:

• sending a first request to a second network node while a first network node is roaming to or located in at least one second network, wherein the first request comprises one or more of the following:
• a request for a proposed adjustment of at least one roaming budget of at least one roaming related parameter;
• a request for a new budget of the at least one roaming budget of at least one roaming related parameter;
• or
• a request for an admission control of at least one roaming user equipment (UE) for at least one network slice;
• receiving a first response from the second network node, wherein the first response indicates one or more of the following:
• whether the second network node accepts or rejects the proposed adjustment of the at least one roaming budget;
• a new allocated roaming budget of at least one roaming related parameter;
• or
• whether the second network node accepts or rejects the requested admission control of the at least one roaming UE for the at least one network slice;
• wherein the operations comprise:
• monitoring at least one of network data or UE data indicating a status of at least one of a network or UE related to the at least one roaming budget;
• and
• determining whether to send the first request to the second network node while the first network node is roaming to or located in the at least one second network based on at least one of the network data or the UE data;
• and
• wherein the operations comprise:
• receiving a subscription request from the second network node, wherein the subscription request indicates at least one subscription event;
• monitoring the at least one subscription event;
• and
• determining whether to send a notification of the subscription request to the second network node.