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In this chapter we shall learn about 5G NR CORESET. CORESET stands for Control Resource Set. It is used to decode PDCCH. WKT UE needs to decode PDCCH and get the DCI info carried by PDCCH. Otherwise UE will never know the DL/UL grants for PDCCH …

Reference Signals are for Phy layer only. In 5G NR Reference signals are used for both downlink and uplink. There are 4 different types of reference signals in 5G: 1. DM-RS: Demodulation Reference Signal 2. PT-RS: Phase Tracking Reference Signal 3. STS: Sounding Reference Signal 4. …

DCI stands for Downlink Control Information. It is used to carry downlink control information for one or more cells with one RNTI. It also provides the UE with necessary information such as physical layer resource allocation, power control commands, HARQ information for both uplink and downlink. …

5G Resource Grid: A 5G Resource Grid is defined by one subframe (1ms) in time domain and full carrier bandwidth in frequency domain. Example: Consider below parameters: Channel Bandwidth = 50MHz Sub Carrier Spacing = 30MHz Guard Band = 692.5KHz. First we will calculate number of …

In this chapter we shall have a look at the important concepts that are required to understand 5G air interface. 5G will operate on 2 different frequencies. Frequency Range 1 (FR1): 450 MHz to 7.125 GHz Frequency Range 2 (FR2): 24.25 GHz to 52.6 GHz Low …

In this chapter we shall see in detail of 5G NR MAC PDU for RACH. After sending Msg1, UE will monitor PDCCH window and then PDCCH will indicate the location of PDSCH and PDSCH will contain RAR. Msg2 is a RAR message. We will discuss MAC …

5G NR Protocol stack is divided into 2 planes: User Plane and Control Plane. User Plane is used to transfer user data and control plane is used to transfer system control signalling transmission. 5G NR User Plane Protocol Stack 5G NR Control Plane Protocol Stack MAC …