Comments on: 5G NR Resource block

By: Mathuranathan

Mathuranathan — Thu, 27 Apr 2023 11:36:23 +0000

In reply to WRooney. In 5G NR, a resource block (RB) is defined only for the frequency domain. i.e, a RB is a block of 12 subcarriers. We can assume that the minimum length of resource block is 1 OFDM symbol. The exact Resource allocation for UE for PDSCH in time domain is defined by Start and Length Indicator Value (SLIV) or directly using the indicators : start symbol S and the allocation length L. Refer: ETSI TS 138 214 V17.3.0 (2022-09) section 5.1.2.1.

By: WRooney

WRooney — Mon, 24 Apr 2023 14:50:32 +0000

Hi, do not understand concept of data mapping onto subcarriers. Suppose simple scenario. We schedule PDSCH on some slot. As one RB is smallest allocation for UE, then will UE read 168 (14x12sc) or just 14(1sc) OFDM symbols of PDSCH data (suppose that we do nat have DMRS for PDSCH)? I guess the first case is valid, we still talk about TDD.

By: Mathuranathan

Mathuranathan — Thu, 22 Dec 2022 03:52:57 +0000

In reply to Omkar RD. Thanks for pointing it out. It is now corrected.

By: Omkar RD

Omkar RD — Thu, 18 Aug 2022 10:10:19 +0000

For Table 2 and Table 3, I believe the caption must read “slots per subframe” instead of “subframes per slot”