| CPC H04J 3/0667 (2013.01) [H04J 3/0644 (2013.01); H04W 8/24 (2013.01); H04W 56/001 (2013.01)] | 14 Claims |

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8. A first network function entity including a network side time sensitive network (TSN) translator (NW-TT) in a 5th generation system (5GS), the first network function entity comprising:
a transceiver configured to transmit and receive a signal; and
a controller coupled with the transceiver and configured to:
receive, from a second network function entity, time synchronization information including first information indicating that the NW-TT and a device side TSN translator (DS-TT) supporting a same domain are synchronization sources of the 5GS, and second information indicating a format for a distribution of a time synchronization,
generate a sync message for the DS-TT based on the time synchronization information,
add, to the sync message, an ingress timestamp corresponding to an ingress time at which the sync message is generated, and
transmit, to a terminal including the DS-TT, the sync message,
wherein the sync message includes a rate ratio with a value set to 1.
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