T_u_symb = 41.667 us / u

N_symb = 10 * u
N_subslot = 2 * u

// Npacket = PackLen  * N_symb / N_subslot
Npacket = PackLen  * N_symb

T = Npacket * T_u_symb

// type 1
T = PackLen * 10u * 41.667 us / u
T = packLen * 416.67 us

// type 0
T = PackLen * N_symb / N_subslot * T_u_symb

T = PackLen * 10u / 2u * 41.667 us / u

T = PackLen * 333 us / u