Following the same approach as in section B . 2 . 1 in 3 GPP TR 36 . 912 , the LTE U - plane one - way latency for a scheduled UE consists of the fixed node processing delays and 1 TTI duration for transmission , as shown in Figure 1 below . Assuming the processing times can be scaled by the same factor of TTI reduction keeping the same number of HARQ processes , the one way latency can be calculated as