Discuss Huawei H35-481_V2.0 Exam Topic 2 Question 71

Which of the following statements about a self-contained slot is Incorrect?

AFaster downlink hybrid automatic repeat request (HARQ) feedback and UL data scheduling to reduce the RTT.

BIncreased GP overhead due to frequent uplink-downlink switching.

CHigh requirements on latency of terminal hardware processing.

DProlonged sounding reference signal (SRS) transmission period to track fast channel changes and Improve MIMO performance.

Suggested Answer: B

Increased GP overhead due to frequent uplink-downlink switching. Self-contained slots are designed to reduce the round-trip time (RTT) by providing faster downlink hybrid automatic repeat request (HARQ) feedback and UL data scheduling, as well as prolonged sounding reference signal (SRS) transmission periods to track fast channel changes and improve MIMO performance. However, they do not involve increased GP overhead due to frequent uplink-downlink switching. High requirements on latency of terminal hardware processing may be involved, depending on the implementation.

3GPP TS 36.300

https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docx

TR 121 915 - V15.0.0 - Digital cellular telecommunications system ...

https://www.etsi.org/deliver/etsi_tr/121900_121999/121915/15.00.00_60/tr_121915v150000p.pdf

ATIS 3GPP

https://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.473.V1620.pdf

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12 comments · newest first

Nakisha 1 month ago

I feel like B could be the answer too. Frequent switching does add overhead.

Ellen 1 month ago

I agree, D doesn't make sense. It contradicts the need for quick responses.

Marsha 1 month ago

I think option D is incorrect. SRS should be shorter for fast changes.

Tanja 2 months ago

Wait, are we sure about B)? That sounds too simplistic.

Ronnie 2 months ago

D) is definitely true, SRS is crucial for MIMO!

Wava 2 months ago

C) seems a bit off, not sure about those high latency requirements.

Delpha 2 months ago

Totally agree, B) makes sense with all that switching.

Pura 2 months ago

A) is actually correct, faster feedback is a plus.

Erick 2 months ago

I recall something about latency requirements being critical for hardware, so C could be the one that doesn't fit with self-contained slots.

Barbra 3 months ago

I practiced a similar question about HARQ feedback, and I think it was mentioned that it actually helps reduce RTT, so A seems correct.

Golda 3 months ago

I'm not entirely sure, but I feel like increased GP overhead might not be a major issue with self-contained slots.

Rosio 3 months ago

I think I remember that self-contained slots are designed to improve efficiency, so maybe option D is the incorrect one?

Huawei H35-481_V2.0 Exam - Topic 2 Question 71 Discussion