A: 5G is based on OFDM (Orthogonal frequency-division multiplexing) , a method of modulating a digital signal across several different channels to reduce interference. 5G uses 5G NR air interface alongside OFDM principles. 5G also uses wider bandwidth technologies such as sub-6 GHz and mmWave.
Read moreWhat is MAC PDU in LTE?
LTE MAC PDU is a bit string but octet aligned (i.e multiple of 8 bits) . A MAC PDU header consists of one or more subheaders. Each subheader corresponds to either a MAC SDU, MAC control element or padding. MAC PDU header can have these six elements R/R/E/LCID/F/L.
Read moreWhat protocol is 5G?
Data then goes through the service data adaptation protocol (SDAP) , a new protocol layer for quality of service (QoS) management. The higher protocol layers are based on LTE. The IP header is replaced with a 5G equivalent at the packet data convergence protocol (PDCP) layer.23 Tem 2020
Read moreWhat is 5G MAC layer?
The MAC sublayer of 5G NR protocol stack interfaces to RLC sublayer from above and PHY layer from below. It maps information between logical and transport channels . Logical channels are about the type of information carried whereas transport channels are about how such information is carried.24 Şub 2021
Read moreWhat is MAC layer in LTE?
The MAC layer supports the functions such as connecting the upper layer with the lower layer, transferring data and controlling radio resource . The MAC layer is composed of a HARQ entity, a multiplexing/de-multiplexing entity, a logical channel prioritization entity, and a control entity.
Read moreWhat is transport block?
Transport Block is a packet of data which is passed between the MAC and Physical layers . It is passed downwards at the transmitter and upwards at the receiver. A Transport Block undergoes Physical layer processing at the transmitter before being mapped onto the PDSCH for transfer across the air-interface.25 Mar 2021
Read moreHow is transport block size determined?
Step to Calculated TBS The total number of REs within the bandwidth of a single RB is 12 x 14 = 168 using normal cyclic prefix . The final value is multiplied by the number of allocated Resource Blocks to generate a value for .16 Ağu 2020
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