RELIABLE DATA DELIVERY OVER NON-ACCESS STRATUM

The present disclosure is directed to method in a mobility management node (105) and such a node for delivering data to a wireless communication device, WCD, (101) served by the mobility management node (105), operating in a communication network (10b, 10c) comprising a network entity, NE, (108, 110, 210, 240) and a radio access network, RAN, node (102) serving the WCD (101), the method comprises: obtaining (306, 402, 610, 710) capability information indicating whether the RAN node supports acknowledgement of a successful delivery of data to the WCD; receiving (207, 311, 409, 620, 720) a data message sent by the NE comprising user data intended for the WCD; sending (313, 411, 630, 730) a control plane message comprising the user data to the RAN node for further delivery to the WCD; sending (209, 650, 740) a response to the NE indicating the outcome of the data delivery.