4G LTE Timing Advance Distance Calculator

This Page provides information about 4G LTE Timing Advance (TA) Distance Calculator. Timing advance (TA) is a UE offset between the start of a received downlink subframe and a transmitted uplink subframe. Timing advance (TA) offset at the UE is necessary to ensure downlink and uplink subframes to be synchronised with the eNodeB

Timing adjustment LTE Nta

The Timing Advance (TA) Command in RAR from eNodeB to UE indicate an index value TA (0, 1, 2… 1282) which should to be used.

NTA is the timing offset (sec.) between uplink and downlink radio frames. NTA depends on TA.

NTA =16* TA * TS . Where TS = 1/(2048×15000) = 1/30720000 sec

Maximum propagation Distance can be calculated using the formula:

Distance = (3*108*NTA)/2 m

The calculation is based on the 3GPP standards.

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