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| Section | Weight | Objectives |
|---|---|---|
| 5G Radio Network In-depth Principles | 30% | - 5G spectrum and frame structure - Massive MIMO and beamforming principles - 5G NR protocol stack and signaling procedures - 5G NR air interface fundamentals |
| 5G Radio Network Planning | 10% | - Interference analysis and mitigation - Coverage and capacity planning - Link budget calculation - Parameter planning and configuration |
| 5G Industry Applications & Private Network Solutions | 5% | - Vertical industry scenarios and KPI requirements - Private 5G network requirements and design |
| 5G Radio Network Optimization | 20% | - Drive test and signaling tracing - Performance indicator analysis - Coverage, capacity, and quality optimization - Fault diagnosis and troubleshooting |
| 5G RAN Feature Application | 35% | - Mobility management and handover optimization - Energy saving and coverage enhancement features - Carrier aggregation and dual connectivity - Power control and load balancing |
>> Valid H35-581_V2.0 Test Notes <<
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NEW QUESTION # 15
For type 0 allocation, bitmaps are used to map resources, and this is applicable to downlink scheduling with a small amount of data because the minimum scheduling unit for this type is one RBG.
Answer: A
Explanation:
The statement is false in the intended examination context because resource allocation type 0 uses Resource Block Group (RBG) granularity, which is generally coarser than the individual Resource Block (RB) allocation granularity available through type 1.
In NR downlink scheduling, the gNodeB allocates Physical Downlink Shared Channel (PDSCH) resources according to the configured frequency-domain resource-allocation method.
According to 3GPP TS 38.214, type 0 allocation uses a bitmap in which each bit indicates whether a corresponding RBG is assigned to the scheduled UE.
An RBG normally contains multiple consecutive RBs, with its nominal size determined by the Bandwidth Part (BWP) size and the configured RBG-size parameter.
For example, standardized nominal RBG sizes include 2, 4, 8, and 16 RBs.
Type 0 supports flexible selection of adjacent or nonadjacent RBGs, making it useful for scheduling across separated frequency-domain resources.
However, it may allocate more bandwidth than necessary when only a small amount of data must be transmitted.
Type 1 allocation identifies a starting RB and a contiguous allocation length, permitting finer control of the assigned resource quantity.
Therefore, type 0 is not inherently preferable for small-data scheduling merely because its minimum normal allocation is one RBG.
Official Reference: 3GPP TS 38.214, Sections 5.1.2.2.1 and 5.1.2.2.2, Downlink Resource Allocation Types
0 and 1 .
Technical warning / qualification: Type 0 is not prohibited for small packets. The incorrect part is the conclusion that RBG-level granularity makes it particularly suitable for small-data scheduling.
NEW QUESTION # 16
In NSA networking, which procedure is initiated by a UE when a 5G cell change fails?
Answer: D
Explanation:
The Secondary Cell Group (SCG) failure information procedure is initiated when a UE detects a qualifying failure associated with its NR secondary connection during Non-Standalone (NSA) operation.
In E-UTRA-NR Dual Connectivity (EN-DC), the LTE eNodeB functions as the Master Node, while the NR gNodeB provides secondary radio connectivity.
The NR Primary Secondary Cell (PSCell) serves as the principal serving cell within the SCG.
When a PSCell change fails, the UE may detect an SCG reconfiguration-with-synchronization failure or another relevant SCG failure condition.
Rather than immediately reestablishing the entire LTE master connection, the UE can report the SCG failure to the Master Node.
For EN-DC, the applicable reporting mechanism involves the SCGFailureInformationNR message transported using LTE RRC signaling.
The failure report can identify the failure type and provide available NR measurement information to assist diagnosis and recovery.
The Master Node may subsequently initiate SCG release, modification, or another appropriate recovery procedure.
Options A and B describe connection-establishment or reestablishment procedures rather than the specific reporting action required for an SCG failure.
Option C, MR, represents measurement reporting and is not the dedicated SCG failure notification mechanism.
Therefore, option D is correct.
Official Reference: 3GPP TS 36.331, Section 5.6.13a, NR SCG Failure Information ; TS 38.331, Section
5.7.3, SCG Failure Information .
Technical warning / qualification: The original options use RPC instead of the standardized abbreviation RRC . The wording has been preserved, but options A and B should be corrected before publication.
NEW QUESTION # 17
Which physical channel is used to transmit ACK/NACK for 5G uplink data?
Answer: C
Explanation:
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.
NEW QUESTION # 18
Which TA offsets may be configured for a 5G network operating in n41?
Select All that Apply
Answer: A,B
Explanation:
Options B and C are correct because the standardized Timing Advance (TA) offset values applicable to an NR Frequency Range 1 (FR1) Time Division Duplex (TDD) deployment include 25600 T_c and 39936 T_c, depending on the coexistence scenario.
NR band n41 operates in FR1 using TDD.
Timing Advance enables the UE to adjust uplink transmission timing so that signals from different UEs arrive at the gNodeB within the required timing alignment.
In NR, the effective uplink timing relationship includes a timing-advance offset represented by N_TA,offset.
According to the standardized timing requirements:
Option B - 25600 T_c: This value applies to FR1 TDD operation without the relevant LTE-NR coexistence requirements. It is also the default FR1 offset in applicable configurations when no explicit n- TimingAdvanceOffset is provided.
Option C - 39936 T_c: This value applies to FR1 TDD operation involving LTE-NR coexistence.
Option A - 0 T_c: This value is associated with the specified FR1 FDD coexistence case, not the normal n41 TDD configurations represented by this question.
Option D - 51200 T_c: This is not one of the applicable standardized NR timing-advance offset values.
Therefore, B and C are correct.
Official Reference: 3GPP TS 38.533, Section 4.4.1.0.1, Table 4.4.1.0.1-2, Timing Advance Offset Values ; TS 38.213, Section 4.2, Transmission Timing Adjustments .
NEW QUESTION # 19
Which of the following channels or signals uses the same transmit power as the PUSCH?
Answer: A
Explanation:
In NR, SRS is transmitted by the UE to provide uplink channel-sounding information for scheduling, channel estimation, beam management, and MIMO-related procedures.
The SRS transmission-power calculation follows the uplink power-control principles specified in 3GPP TS
38.213.
These principles include configured target-power parameters, transmission bandwidth, estimated path loss, path-loss compensation, and applicable closed-loop adjustments.
Under certain configurations, SRS may share a power-control adjustment state with PUSCH. Under other configurations, separate adjustment states and SRS-specific parameters are used.
Consequently, SRS transmission power is related to the PUSCH power-control mechanism but is not necessarily numerically identical to PUSCH transmit power .
PRACH has its own random-access transmit-power and power-ramping procedures.
PUCCH uses a separate uplink power-control calculation, while PDSCH is a downlink physical channel.
The intended comparison therefore points toward SRS, represented incorrectly as SRC in the original choices.
Official Reference: 3GPP TS 38.213, Sections 7.1 and 7.3, PUSCH and SRS Transmit Power Control .
Technical warning / qualification: Replace option C, SRC , with SRS . The question should also state uses a related power-control mechanism rather than uses the same transmit power , because the latter is not universally correct.
NEW QUESTION # 20
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