## NPTEL 5G Wireless Standard Design Week 6 Assignment Answers 2024

1. Identify the invalid resource allocation configurations for the PDCCH transmission.

- 13 PRBs across 2 symbols
- 6 PRBs across 2 symbols
- 26 PRBs across 2 symbols
- 16 PRBs across 3 symbols

Answer :-For Answers Click Here

2. If the user is assigned 6 PRBs across 2 symbols to receive a PDCCH signal with DCI length of 32 then calculate the length of polar encoder.

Answer :-For Answers Click Here

3. If the user is assigned 6 PRBs across 2 OFDM symbols to receive a PDCCH signal with DCI length of 32 then calculate the rate at which the PDCCH signal is transmitted.

- 0.4219
- 0.2593
- 0.9874
- 0.2358

Answer :-For Answers Click Here

4. If the user is assigned 6 PRBs across 1 OFDM symbol to receive a PDCCH signal. Then find the DCI lengths for which shortening will happen during rate-matching.

- 20
- 25
- 52
- 141

Answer :-

5. The following parameters which helps the UE to identify the location of UE specific search spaces is:

- SFN
- C-RNTI
- Slot-Number
- AL value

Answer :-

6. Calculate the maximum number of blind decoding attempts UE has to make in a slot if it’s search space consists of 16 CCEs per OFDM symbol across 3 OFDM symbols and has the following CORESET.

CORESET DETAILS:

- AL : 4, 8, 16
- Allocated OFDM symbols : 4, 5, 6
- Duration : 1 OFDM symbol
- Period : 1 slot
- Mapping : non-Interleave

Answer :-For Answers Click Here

7. If the CORESET configurations across 32 CCEs per OFDM symbol across 3 OFDM symbols are as follows:

CORESET DETAILS:

- Allocated OFDM symbols : 4, 5, 6
- Duration : 1 OFDM symbol
- Period : 10 slot
- Mapping : non-Interleaved

If the sub-carrier spacing is 120kHz then select the valid AL configurations.

- AL: 1, 2, 4, 8, 16
- AL: 2, 4, 8
- AL: 8, 16
- AL: 16

Answer :-

8. Consider a 5G NR system with 100 MHz bandwidth and 30 kHz subcarrier spacing. The gNB scheduler uses the first 128 PRBs across each OFDM symbol in a particular slot only for sending DCIs with a CORESET design as shown below

- 4 OFDM symbols at AL1
- 2 OFDM symbols at AL2
- 4 OFDM symbols at AL4
- 1 OFDM symbol at AL8
- Remaining OFDM symbols at AL 16

Calculate the maximum number of users whose DCI can be sent per second if each CORESET has a duration of 1 OFDM symbol with a period of 10 slots.

Answer :-

9. If the user is assigned 24 PRBs across 2 OFDM symbols to receive a PDCCH signal. Then does any valid DCI length exist for which shortening to occur during rate-matching.

- Yes
- No

Answer :-For Answers Click Here