Methods, network nodes and computer readable media for network node reselection

A method at a third network node for network node reselection for a context related to a service, wherein a first network node has selected a second network node for providing the service consumed by the first network node, and the context related to the service has been created, the method comprising:

• receiving, from the first network node, a request message for the context, the request message comprising property information about the request message, wherein said property information about the request message comprises at least one of:
• information indicating that the request message is involving a reselection due to a failure of reaching the second network node,
• information indicating that the request message is involving a reselection due to overload control for the second network node, or
• information indicating that the request message is involving a reselection due to a temporary rejection from the second network node during a last attempt to the second network node;
• determining whether the request message is rejected or accepted at least based on the property information about the request message;
• and
• transmitting, to the first network node, a response message comprising an indication of whether the request message is rejected or accepted.

A first network node configured for network node reselection for a context related to a service, wherein the first network node has selected a second network node for providing a service to be consumed by the first network node, and the context related to the service has been created, the first network node comprising:

• at least one processor, and
• at least one memory, storing instructions which, when executed on the at least one processor, cause the first network node to:
• determine to reselect a third network node that can provide the service for the context that was provided by the second network node;
• and
• transmit a request message for the service to the third network node, the request message comprising property information about the request message;
• wherein said property information about the request message comprises at least one of:
• information indicating that the request message is involving a reselection due to a failure of reaching the second network node,
• information indicating that the request message is involving a reselection due to overload control for the second network node, or
• information indicating that the request message is involving a reselection due to a temporary rejection from the second network node during a last attempt to the second network node.

A third network node configured for network node reselection for a context related to a service, wherein a first network node has selected a second network node for providing the service consumed by the first network node, and the context related to the service has been created, the third network node comprising:

• at least one processor, and
• at least one memory, storing instructions which, when executed on the at least one processor, cause the third network node to:
• receive, from the first network node, a request message for the context, the request message comprising property information about the request message, wherein said property information about the request message comprises at least one of:
• information indicating that the request message is involving a reselection due to a failure of reaching the second network node,
• information indicating that the request message is involving a reselection due to overload control for the second network node, or
• information indicating that the request message is involving a reselection due to a temporary rejection from the second network node during a last attempt to the second network node;
• determine whether the request message is rejected or accepted at least based on the property information about the request message;
• and
• transmit, to the first network node, a response message comprising an indication of whether the request message is rejected or accepted.