First service network node, a second service network node and methods relating to handling of a service session

A first service network node configured for handling a service session associated with a user equipment in a wireless communications network, which user equipment is configured to be served by a first base station, and wherein the first service network node, which is associated with the first base station, comprises a service application configured to provide the service session to the user equipment, the first service network node is configured to:

• detect a handover signal, which handover signal indicates a request to prepare for handover of the user equipment from the first base station to a second base station;
• obtain an application state and a network connection state, each associated with the service session and each being specific for the user equipment;
• detect a handover command, which handover command commands handover of the user equipment from the first base station to the second base station;
• send a command to a second service network node, associated with the second base station, commanding the second service network node to prepare for migration of the service session from the first service network node;
• and to
• send the application state and the network connection state to the second service network node, enabling the service session to be resumed in a corresponding service application running in the second service network node.

A method in a second service network node for handling a service session associated with a user equipment in a wireless communications network, which user equipment is served by a first base station and is to be handed over to a second base station, which is associated to the second service network node, and which service session is provided to the user equipment by a service application running in a first service network node associated with the first base station, the method comprising:

• detecting a command, from the first service network node, which command commands the second service network node to prepare for migration of the service session from the first service network node;
• receiving an application state and a network connection state from the first service network node, which application state and network connection state each is associated with the service session, and each is specific for the user equipment;
• and
• providing a corresponding service application running in the second service network node with the application state and the network connection state of the service session, enabling the service session to be resumed in the corresponding service application running in the second service network node.

A second service network node configured for handling a service session associated with a user equipment in a wireless communications network, which user equipment is configured to be served by a first base station and further configured to be handed over to a second base station associated with the second service network node, and wherein a first service network node, which is associated with the first base station, comprises a service application configured to provide the service session to the user equipment, the second service network node is configured to:

• detect a command, from the first service network node, which command commands the second service network node to prepare for migration of the service session from the first service network node;
• receive an application state and a network connection state from the first service network node, which application state and network connection state each is associated with the service session, and each is specific for the user equipment;
• and to
• provide a corresponding service application running in the second service network node with the application state and the network connection state of the service session, enabling the service session to be resumed in the corresponding service application running in the second service network node.