How are resource blocks allocated in LTE?

In LTE, radio resources are divided into time and frequency resource elements. Resource elements in time axis are divided into number of OFDM symbols and in frequency axis are divided into number of sub-carriers . Resource element (RE) is a smallest resource unit, which occupies a single sub-carrier and an OFDM symbol.

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What is virtual resource block in LTE?

The E-UTRA uses the concept of VRB (Virtual Resource Block) when allocating resources . It defines two types: LVRB (Local Virtual Resource Block) – this is the same as the PRBs; DVRB (Distributed Virtual Resource Block) – this identifies a distribution of the resources required over a number of PRBs.

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What is RBG in 5G?

RBG is the resource block group size when PDSCH has resource allocation type 0 . Type 0 resource allocation has distributed PRB allocation for UE. This distribution is based on the PRB group. PRB group size depends on BW.

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