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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIP-5G Radio Network Planning & Radio Network Optimization V2.0 Exam |
| Exam Number: | H35-581_V2.0 |
| Exam Format: | Single-choice questions, Multiple-choice questions |
| Certificate Validity Period: | 3 years |
| Related Certifications: | HCIA-5G HCIP-5G |
| Available Languages: | Chinese, English |
| Recommended Training: | Huawei Talent Development Center - 5G Training Path |
| Exam Registration: | Huawei Talent Certification Portal |
| Sample Questions: | Huawei H35-581_V2.0 Sample Questions |
| Exam Way: | Computer-based exam via Huawei certification system or authorized test centers (online proctored or onsite depending on region). |
| Pre Condition: | It is recommended to have HCIA-5G certification or equivalent knowledge of LTE/5G radio networks. |
| Official Syllabus URL: | https://e.huawei.com/en/talent/ |
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質問 # 59
Which physical channel is used to transmit ACK/NACK for 5G uplink data?
正解：D
解説：
The Physical Downlink Control Channel (PDCCH) is the closest applicable choice for the HARQ control mechanism associated with 5G NR uplink data transmissions.
In NR, uplink user data is transmitted through PUSCH. The gNodeB receives and decodes the transmitted transport block and determines whether retransmission is necessary.
Unlike LTE, NR does not define the Physical Hybrid ARQ Indicator Channel (PHICH) for explicit acknowledgment of uplink transmissions.
Instead, NR employs asynchronous uplink HARQ operation controlled through scheduling information provided by the gNodeB.
The PDCCH carries Downlink Control Information (DCI), including uplink grants specifying the HARQ process identifier, New Data Indicator (NDI), and redundancy version.
When retransmission is required, the gNodeB can schedule the corresponding HARQ process again without toggling its NDI.
When new data is scheduled for the same process, the NDI toggles, allowing the UE to distinguish new transmission from retransmission.
PUCCH , by contrast, carries HARQ-ACK feedback transmitted by the UE for downlink PDSCH reception.
It does not carry acknowledgment information from the gNodeB for uplink PUSCH reception.
Therefore, PDCCH is the closest answer, but it carries uplink HARQ scheduling instructions rather than an explicit standalone ACK/NACK indication.
Official Reference: 3GPP TS 38.321, Sections 5.4.1-5.4.2, UL Grant Reception and HARQ Operation ; TS
38.212, Section 7.3.1, DCI Formats .
Technical warning / qualification: The document's explanation selects PUCCH, but this confuses feedback transmitted on the uplink for downlink data with feedback concerning uplink data . A technically correct version should ask: Which physical channel carries DCI used to control HARQ retransmissions for 5G NR uplink data? The answer would then be C.
質問 # 60
Which of the following statements correctly compare LTE PCI with NR PCI?
正解：D
質問 # 61
Which of the following statements regarding throughput-related indicators is incorrect?
正解：D
解説：
Option A is incorrect under the standardized burst-based throughput measurement methodology because including the final small transmission interval can distort the measured throughput.
In NR performance management, throughput measurements are intended to represent radio transmission performance rather than the average application traffic rate across periods containing idle time.
The relevant measurement procedure distinguishes intervals during which the transmission buffer contains data from intervals when the buffer becomes empty.
The final transmission interval of a data burst may carry only a small residual packet. Including its duration and data volume can introduce a packet-size-dependent effect into the calculated throughput.
3GPP TS 28.554 therefore defines an extended throughput measurement method that excludes the final slot of the burst from the applicable calculation.
Option B is correct because average uplink and downlink UE throughput are used to assess radio-network performance as experienced by users.
Option C describes the general relationship between transmitted data volume and applicable active transmission time, subject to the precise measurement definitions.
Option D expresses a comparable throughput relationship at cell level, although its wording is less precise than the standardized KPI definitions.
Therefore, option A contradicts the specified throughput methodology.
Official Reference: 3GPP TS 28.554, Section 6.3.6.2, Extended Definition of Throughput , Figure 1; TS
28.552, 5G Performance Measurements .
質問 # 62
In an NSA access issue, which of the following can cause a UE not to report B1 measurement results?
Select All that Apply
正解：A、B、C、D
解説：
All four conditions can prevent a UE from generating or transmitting a valid B1 measurement report during Non-Standalone (NSA) E-UTRA-NR Dual Connectivity (EN-DC) access.
In NSA architecture, the LTE eNodeB acts as the Master Node and configures NR inter-RAT measurements to determine whether an eligible 5G NR cell can be added as a Secondary Node.
Event B1 is triggered when the measured quality of an inter-RAT neighboring cell exceeds the configured threshold, subject to hysteresis and time-to-trigger requirements.
Option A: Excessive received signal power may saturate the UE receiver, degrading synchronization-signal detection and preventing successful NR cell measurements.
Option B: If the LTE-side measurement configuration identifies a frequency that does not correspond to the intended NR SSB carrier, the UE may be unable to detect the target NR synchronization signals.
Option C: If the measured NR signal does not satisfy the configured B1 entry condition, the reporting event is not triggered.
Option D: An abnormal NR cell may fail to transmit the required synchronization signals correctly or provide measurable radio coverage, preventing a valid measurement result.
Therefore, all four conditions are plausible causes of missing B1 measurement reports.
Official Reference: 3GPP TS 36.331, Inter-RAT Measurement Reporting - Event B1 ; TS 38.533, Section
8.4.2, NR Inter-RAT Event-Triggered Reporting Requirements .
質問 # 63
Which of the following messages can carry NSSAI information?
Select All that Apply
正解：B、D
解説：
Options C and D are correct because Network Slice Selection Assistance Information (NSSAI) can be conveyed through both the NAS Registration Request and the NR RRCSetupComplete message.
In 5G, NSSAI enables the network to identify the network slices requested or supported for a particular UE.
Individual slices are represented by Single Network Slice Selection Assistance Information (S-NSSAI), comprising a Slice/Service Type (SST) and an optional Slice Differentiator (SD).
Option C - Registration Request: During 5G registration, the UE may include Requested NSSAI in its NAS Registration Request. This enables the Access and Mobility Management Function (AMF) to evaluate the requested slices against subscription information and network availability.
Option D - RRC Setup Complete: The NR RRCSetupComplete message includes an optional s-NSSAI- List information element. When supplied by the upper layers, this element can communicate S-NSSAI information during RRC connection establishment.
Options A and B are incorrect because RRCSetup and RRCSetupRequest do not contain the corresponding NSSAI information element.
The distinction is that the NAS Registration Request communicates slice information for core-network registration, whereas RRCSetupComplete can provide relevant slice assistance information through access- stratum signaling.
Therefore, C and D are the correct selections.
Official Reference: 3GPP TS 38.331, Section 6.2.2, RRCSetupComplete Message ; TS 24.501, Sections
4.6.2.3 and 8.2.6, Registration Request and Requested NSSAI .
質問 # 64
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