Patent ID: 9544775
Date: 2017-01-10
CPC Classifications: H04L,H04W

Claim:
1. A wireless communication device for use in a cellular network, the device comprising: a radio interface configured to enable communication between the device and a base station of the cellular network over a radio link; a transfer entity configured to exchange user data packets with a core network node of said cellular network over a signaling connection within a Non Access Stratum, via said radio link: and a data transmission verification entity configured to use a verifiable acknowledgement, received from said core network node over the signaling connection, to confirm delivery of a user data packet sent to the core network node over the signaling connection, the data transmission verification entity being further configured to selectively include, with the user data packet sent to said core network node across the signaling connection, a request to return to the device the verifiable acknowledgement for the sent user data packet; wherein the verifiable acknowledgement allows the wireless communication device to verify that the verifiable acknowledgement has actually been sent by said core network node with which the device intends to communicate.