In NR, there are two different type of reference coordinate system and these reference coordinate system is called Reference PRB. In sub 6 Ghz (FR1), we use the reference PRB system based on 15 Khz subcarrier spacing and in mmWave (FR2) we use the reference PRB sysbem based on on 60 khz subcarrier spacing as illustrated below.

Feb 22, 2022 · A resource block (a.k.a physical resource block – PRB) is a block of N RBsc = 12 subcarriers over which the transmissions are scheduled. 5G NR physical layer uses time-frequency resource (physical resource block) for transmission.

Aug 15, 2020 · In NR, PRB word is only use to differentiate CRB and RB (PRB). There is no difference between RB and PRB in time domain.

NR PDCCHs are specifically designed to transmit in a configurable control resource set (CORESET). A CORESET is analogous to the control region in LTE but is generalized in the sense that the set of RBs and the set of OFDM symbols in which it is located are configurable with the corresponding PDCCH search spaces.

Explore PRB utilization and resource allocation efficiency in 5G NR, key metrics for managing radio resources and optimizing network performance. Learn how to achieve high data rates and low latency.

Apr 4, 2025 · In 5G New Radio (NR), RB stands for Resource Block and PRB stands for Physical Resource Block. These are essential units of frequency-time resources that form the foundation of 5G radio communication.

On one hand, the larger Subcarrier Spacing (SCS) adopted in 5G NR can increase the absolute frequency-domain size of one PRB. For example, 5G NR PRB is composed of 12 subcarriers as in LTE, but with 30 kHz SCS, the size of a PRB in the frequency domain is 360 kHz, which is double the size in LTE.

Nov 5, 2019 · An LTE resource block is defined in both time and frequency domain i.e., an RB occupies 12 subcarriers in frequency domain and one slot in time domain. In contrast, an RB in NR is defined only in frequency domain. This approach provides NR system a lot of scheduling flexibility in time domain.

Mar 17, 2023 · The CRB is a fundamental building block in 5G NR systems that provides a way to allocate radio resources to users. It is defined as a set of contiguous PRBs, where a PRB is the smallest unit of bandwidth in 5G NR.

Explore the differences between Resource Grid (RG), Resource Block (RB), and Resource Element (RE) within the 5G NR framework, focusing on their structure and function.