NTN Timing Advance Offset

Technical Explanation

Standard cellular Timing Advance accommodates cell radii up to 100 km. In NTN, the satellite link distance spans thousands of kilometers, resulting in propagation delays of tens to hundreds of milliseconds. The satellite broadcasts a common timing advance offset (T_TAoffset), and the UE calculates its own differential TA.

Key Functions

• Compensates for multi-thousand kilometer propagation distances
• Broadcasts common satellite-to-ground reference delay (T_TAoffset)
• Enables synchronized random access across massive 1000 km satellite beam footprints