CPC H04W 28/0268 (2013.01) [H04J 3/0661 (2013.01); H04L 47/28 (2013.01); H04W 28/24 (2013.01); H04W 36/30 (2013.01)] | 20 Claims |
1. A method performed by a first network node, the method comprising:
generating a timestamp associated with downlink data to be transmitted;
transmitting, in a downlink transmission, the downlink data with the timestamp to a second network node, which forwards, in a downlink transmission, the downlink data according to the timestamp and quality of service (QoS) parameter characteristics for satisfying a time control requirement, the timestamp indicating when the downlink data are obtained or transmitted by the first network node;
sending a session context update request to a Session Management Function (SMF) or User Plane Function (UPF);
receiving a session context update response in response; and
sending a handover request to a target node to trigger a handover process carrying the time control information.
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