Download HCIP-5G-RAN V1.0.H35-481.VCEplus.2024-09-23.60q.tqb

The statement "The start symbol of a front-loaded DMRS of a type B PDSCH is always the first symbol of PDSCH" is incorrect. In 5G NR, the start symbol of a front-loaded DMRS of a type B PDSCH can be configured as the first symbol of PDSCH or as the second symbol of PDSCH.You can refer to the Huawei official documentation for HCIP-5G-RAN V2.0 certification and the 3GPP 5G NR standard (38.211, 38.212, 38.213) for more information on PDSCH DMRS, including the configurations of the front-loaded DMRS, the DMRS symbols and the optional and mandatory nature of it.Here are some official references:Huawei HCIP-5G-RAN V2.0 certification page: https://e.huawei.com/en/certifications/hcip-5g-ranv2-03GPP 5G NR standard: https://www.3gpp.org/specifications/5g-nr-specifications

The statement A is incorrect. The larger the subcarrier spacing [1], the shorter the symbol duration on each subcarrier, not the larger number of symbols. Statement B is also incorrect. The larger the subcarrier spacing [1], the larger the CP length and the more suitable it becomes for wide coverage.Statement C is correct. The smaller the subcarrier spacing, the lower the power spectral density.Statement D is incorrect. The larger the subcarrier spacing [1], the shorter the slot length.https://asp-eurasipjournals.springeropen.com/articles/10.1186/s13634-020-00696-11. A novel timing and frequency offset estimation algorithm for filtered ...https://asp-eurasipjournals.springeropen.com/articles/10.1186/s13634-020-00696-1https://www.sciencedirect.com/topics/engineering/extended-cyclic-prefixExtended Cyclic Prefix - an overview | ScienceDirect Topicshttps://www.sciencedirect.com/topics/engineering/extended-cyclic-prefixhttp://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/5G NR Numerology - Subcarrier Spcaing (SCS) – Techplayonhttp://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/

The UE inactivity timer on the NR side expiring and the air interface link on the NR side being abnormal, and a UE reporting SCG Failure Info to the eNodeB, can both trigger the MeNB to release the SgNB. Other actions, such as an inter-SgNB cell change or the MeNB detecting an abnormal X2 link, may also lead to SgNB release, but are not the trigger for it.https://www.sciencedirect.com/topics/engineering/extended-cyclic-prefixExtended Cyclic Prefix - an overview | ScienceDirect Topicshttps://www.sciencedirect.com/topics/engineering/extended-cyclic-prefixhttp://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/5G NR Numerology - Subcarrier Spcaing (SCS) – Techplayonhttp://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/

BWP (Bandwidth Part) is related to the time-frequency position of the PRACH used by the UE in the contention-based random access procedure. According to the official Huawei documentation, the BWP consists of one or more contiguous frequency sub-bands of the PRACH and defines the timefrequency position of the PRACH used by the UE. Reference:https://support.huawei.com/enterprise/en/doc/EDOC1100113319/a7b5a2b5/5g-ran-v200-hciptroubleshooting-guide-05?sectionFlag=true

the cell-specific reference signal (CRS) that is always sent in LTE cells is not used in NR to reduce interference under light loads and control channel overhead. Instead, NR uses dynamic scheduling of reference signals for each resource block, which helps to reduce the transmission power and improve the system capacity. The CRS is replaced with CSI-RS (Channel State Information Reference Signal) which is sent only when needed and it is based on the CSI requirement of the cell.The official site for 3GPP specifications is https://www.3gpp.org/specifications. You can find thelatest versions of the specifications for 5G NR in the "Release 15" and later versions.You can refer to the specification 38.211 (Physical channels and modulation) specifically section 7.4 "Cell-specific reference signal (CRS)" and section 7.5 "Channel state information-reference signal (CSI-RS)".Here is an excerpt from the specification 38.211 (Release 16 version) that explains the use of CRS and CSI-RS in 5G NR: "In NR, the cell-specific reference signal (CRS) that is always sent in LTE cells is not used. Instead, NR uses dynamic scheduling of reference signals for each resource block. This is done to improve system capacity and reduce transmission power. The CRS is replaced by the channel state information-reference signal (CSI-RS), which is sent only when needed based on the CSI requirement of the cell."

According to the official 3GPP specification, the DCI of NR does not carry PUSCH power control information. It carries scheduling information for the PUSCH and PDSCH and a PMI report.Reference:  https://www.3gpp.org/DynaReport/38-series.htm

The functions of SRSs in NR include downlink beamforming weight calculation, obtaining the uplink channel quality, and uplink beam management. Uplink grants are not related to SRSs.https://www.sciencedirect.com/topics/engineering/extended-cyclic-prefixExtended Cyclic Prefix - an overview | ScienceDirect Topicshttps://www.sciencedirect.com/topics/engineering/extended-cyclic-prefixhttp://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/5G NR Numerology - Subcarrier Spcaing (SCS) – Techplayonhttp://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/https://rfmw.em.keysight.com/wireless/helpfiles/89600B/WebHelp/Subsystems/wlanofdm/content/ofdm_basicprinciplesoverview.htmConcepts of Orthogonal Frequency Division Multiplexing (OFDM ...https://rfmw.em.keysight.com/wireless/helpfiles/89600B/WebHelp/Subsystems/wlanofdm/content/ofdm_basicprinciplesoverview.htm

In 5G NR, the master information block (MIB) is a control message that is transmitted by the base station on the Physical Broadcast Channel (PBCH). The MIB contains the following information:1. System frame number: The MIB contains the system frame number (SFN) which is used to identify the current frame in the system.2. PDCCH ConfigSIB1: The MIB contains the PDCCH (Physical Downlink Control Channel) configuration for the SIB1 (System Information Block 1) which is used to transmit system information to the UE.3. dmrs-TypeA-Position: The MIB contains the position of the dmrs-TypeA (Diversity and Multiplexing Configuration Reference Signal) which is used to transmit a reference signal for demodulation and channel estimation.

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 uplinkdownlink switching. High requirements on latency of terminal hardware processing may be involved, depending on the implementation.https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docx3GPP TS 36.300https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docxhttps://www.etsi.org/deliver/etsi_tr/121900_121999/121915/15.00.00_60/tr_121915v150000p.pdfTR 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.pdfhttps://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.473.V1620.pdfATIS 3GPPhttps://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.473.V1620.pdf

In 5G NR, the random access procedure is used by a UE to establish a connection with the base station. The channels involved in the NR random access of a UE are:1. PDCCH (Physical Downlink Control Channel): The PDCCH is used by the base station to transmit control information to the UE, such as scheduling assignments and uplink grants.2. PRACH (Physical Random Access Channel): The PRACH is used by the UE to transmit the random access preamble to the base station.3. PUCCH (Physical Uplink Control Channel): The PUCCH is used by the UE to transmit control information to the base station, such as uplink scheduling requests and HARQ feedback.4. PUSCH (Physical Uplink Shared Channel) is not involved in NR random access of a UE, it is a shared channel used to transmit the uplink data and control information.https://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.401.V1620.pdfATIS 3GPPhttps://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.401.V1620.pdfhttps://www.etsi.org/deliver/etsi_ts/138300_138399/138300/16.04.00_60/ts_138300v160400p.pdfTS 138 300 - V16.4.0 - 5G; NR; NR and NG-RAN Overall description ...https://www.etsi.org/deliver/etsi_ts/138300_138399/138300/16.04.00_60/ts_138300v160400p.pdfhttps://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docx3GPP TS 36.300https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docx