5G NR: Numerologies and Frame structure Supported Transmission Numerologies - A numerology is defined by sub-carrier spacing and Cyclic-Prefix overhead. - In LTE there is only one subcarrier spacing which is 15kHz whereas in the case of 5G NR multiple subcarrier spacings are defined. Multiple subcarrier spacings can be derived by scaling a basic subcarrier spacing by an integer N. - The numerology used can be selected independently of the frequency band although it is assumed not to use a very low subcarrier spacing at very high carrier frequencies. Flexible network and UE channel bandwidth are supported. - The numerology is based on exponentially scalable sub-carrier spacing deltaF = 2µ × 15 kHz with µ = {0,1,3,4} for PSS, SSS and PBCH and µ = {0,1,2,3} for other channels. - Normal CP is supported for all sub-carrier spacings, Extended CP is supported forµ=2. - 12 consecutive sub-carriers form a physical resource block (PRB). Up to 275 PRBs are supported on a carrier. - A resource defined by one subcarrier and one symbol is called as a resource element (RE).