Apparatus and method of generating network clock reference (ncr) packet for acquiring network synchronization in two-way satellite communication system

An apparatus for generating a network clock reference (NCR) packet, the apparatus comprising:

• a clock generator configured to generate a clock signal being a reference of network synchronization for network synchronization of a two-way communication system;
• a clock reference determiner configured to determine an NCR by latching the clock signal based on a trigger signal with respect to a start of a first frame;
• a synchronization compensator configured to determine a synchronization compensation value by reflecting frame variable length information from the first frame to a second frame into which an NCR packet is to be inserted;
• and
• a packet generator configured to generate the NCR packet by combining the NCR and the synchronization compensation value.

A method of generating a network clock reference (NCR) packet, the method comprising:

• determining an NCR based on a trigger signal with respect to a start of a first frame;
• determining a synchronization compensation value by reflecting frame variable length information from the first frame to a second frame into which an NCR packet is to be inserted;
• and
• generating the NCR packet by combining the NCR and the synchronization compensation value.