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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: SRAN Architecture and Fundamentals | 15-20% | - SRAN solution components and functions - Radio access concepts and principles - Single RAN integration principles - SRAN network architecture overview |
| Topic 2: SRAN Optimization Tools and Reports | 10-15% | - Report generation and interpretation - Automated optimization features - Configuration management for optimization - Nokia NetAct and performance tools |
| Topic 3: Radio Network Performance Monitoring | 20-25% | - Real-time network monitoring techniques - KPI definition and measurement - Performance data collection and analysis - Threshold configuration and alerting - Performance monitoring tools and dashboards |
| Topic 4: Radio Network Optimization Techniques | 25-30% | - Handover optimization - Coverage optimization methods - Load balancing techniques - Parameter tuning best practices - Capacity optimization strategies - Interference analysis and mitigation |
| Topic 5: Performance Troubleshooting | 20-25% | - Root cause analysis methodologies - Network failure identification and resolution - Optimization case studies - Common performance issues diagnosis - Troubleshooting tools utilization |
>> SRAN-Radio-Network-Performance-Optimization Praxisprüfung <<
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16. Frage
In the context of mmWave deployments , what is the primary benefit of analog beamforming ?
Antwort: B
Begründung:
The correct answer is A .
In mmWave systems, beamforming is essential because FR2 signals suffer from high path loss and blockage.
Analog beamforming uses fewer RF chains than fully digital beamforming, so it is cheaper and less complex in terms of RF hardware, power consumption, and implementation. Research and industry references explain that analog and hybrid beamforming architectures reduce the number of required ADCs/RF chains compared with fully digital beamforming, lowering cost and power complexity.
However, analog beamforming has limitations. It usually forms one beam, or a limited number of beams, at a time from a panel. Supporting multiple independent simultaneous beams and more UEs per sector is more associated with digital or hybrid beamforming, not pure analog beamforming.
Therefore, the primary benefit is:
Low cost and low complexity for coverage at higher mmWave bands.
17. Frage
Which parameter defines the PRACH format ?
Antwort: A
Begründung:
The correct answer is B .
The prachConfigurationIndex defines the PRACH configuration, including the PRACH time-domain occasions and the associated PRACH format according to the PRACH configuration tables. In 5G NR, PRACH configuration is based on 3GPP-defined PRACH tables, where the configuration index maps to the PRACH format and PRACH occasion structure.
The other options have different meanings:
A). msg1-FrequencyStart defines the frequency-domain starting position of PRACH occasion resources.
C). prachRootSequenceIndex defines the root sequence used for PRACH preamble generation.
D). totalNumberOfRAPreambles defines how many random access preambles are available.
Therefore, the parameter that defines the PRACH format is:
prachConfigurationIndex.
18. Frage
Identify the missing network components X, Y, and Z in the architecture diagram.
Antwort: D
Begründung:
The correct answer is B .
In the 5G Core , component X is connected to:
N2 from NG-RAN
N11 toward SMF
N15 toward PCF
N26 toward the EPC mobility entity
These are typical interfaces of the AMF , or Access and Mobility Management Function . Therefore, X = AMF .
In the EPC , component Z is connected to:
S1-MME from eNB
S11 toward the gateway
N26 toward the 5GC AMF
These are typical interfaces of the MME , or Mobility Management Entity . Therefore, Z = MME .
Component Y is outside the core user-plane path and represents the external service network connected through N6/SGi , commonly shown as IMS in voice-service architecture diagrams. Therefore, Y = IMS .
So the correct mapping is:
X: AMF, Y: IMS, Z: MME.
19. Frage
In a 5G cell , the following parameter has been modified: lowLatencyReservation = 15 .
Which percentage of UEs will be reallocated to a higher SR periodicity group whenever the threshold for moving to a higher SR periodicity group is reached?
Antwort: D
Begründung:
The correct answer is C .
In 5G uplink scheduling, SR , or Scheduling Request , is used by the UE to request uplink resources when it has data to send. SR periodicity affects uplink latency and PUCCH capacity: shorter SR periodicity gives lower latency but consumes more control-channel resources, while longer SR periodicity saves resources but increases delay.
The parameter lowLatencyReservation = 15 means 15% of the UE/resource share is reserved for the low- latency SR periodicity group. When the load threshold is reached, the remaining portion can be moved to a higher SR periodicity group.
Calculation:
100% # 15% = 85%
So the percentage of UEs that can be reallocated to a higher SR periodicity group is:
0.85 , or 85% .
20. Frage
Choose the correct statement from the options below.
Antwort: C
Begründung:
The correct answer is B .
Beamforming is mainly about shaping and directing radio energy toward a UE or a target area. It improves coverage, SINR, and cell-edge performance by focusing the transmitted or received signal in a specific direction.
MIMO , or Multiple Input Multiple Output , uses multiple antenna paths to improve throughput, reliability, and spectral efficiency. MIMO can be used for spatial multiplexing, diversity, or beamforming depending on the antenna system and radio configuration.
Option A is incorrect because beamforming and MIMO are related but not the same.
Option C reverses the definitions.
Option D is incorrect because beamforming and MIMO are commonly used together, especially in Massive MIMO systems.
So the correct statement is:
Beamforming focuses on directing the signal, while MIMO focuses on utilizing multiple paths for data transmission.
21. Frage
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