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 TRP in NR?
(2) Transmission/ Reception Point (TRP) spectrum efficiency. Transmission / Reception Point spectral efficiency is defined as an aggregate throughput of all users divided by the channel bandwidth divided by the number of transmission/reception point.
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 layer mapping in 5G?
The NR symbol modulate function implements modulation for 5G NR in one simple call. Layer mapping is the operation that maps one or two codewords to up to eight layers . This operation is somewhat simplified compared to LTE, where you could see one or two codewords for a given number of layers.
Read moreHow many subcarriers are in 5G?
5G NR can choose subcarrier spacing from 15kHz to 240kHz, with a maximum 3300 subcarriers in simultaneous use on one channel . However, channels can be no more than 400MHz wide. The standard is frequency agnostic, meaning any subcarrier configuration can be used on any band.
Read moreWhat is 5G physical layer?
PHY layer sits at the bottom of the 5G NR protocol stack, interfacing to MAC sublayer higher up via transport channels . It provides its services to MAC and is configured by RRC . PHY supports downlink ( gNB -to- UE ), uplink ( UE -to- gNB ) and sidelink ( UE -to- UE ) communications.5 Nis 2021
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