Nokia SRAN-Radio-Network-Performance-Optimizationテスト対策書 & SRAN-Radio-Network-Performance-Optimization教育資料

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Nokia SRAN-Radio-Network-Performance-Optimization Exam Syllabus Topics:

SectionObjectives
RF Optimization Principles- Coverage and capacity optimization
  • 1. Interference analysis and mitigation
    • 2. Coverage analysis and enhancement
      Radio Network Performance Fundamentals- Key performance indicators (KPIs)
      • 1. Throughput and latency KPIs
        • 2. Accessibility, retainability, and mobility KPIs
          LTE/NR Performance Optimization- Optimization techniques
          • 1. Scheduling and resource allocation optimization
            • 2. Handover optimization
              Troubleshooting and Performance Analysis- Network issue identification and resolution
              • 1. Fault analysis workflows
                • 2. Performance degradation root cause analysis
                  SRAN Architecture Overview- SRAN network structure and components
                  • 1. Radio access network elements overview
                    • 2. LTE/NR integration principles

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                      Nokia SRAN-Radio-Network-Performance-Optimization試験の準備方法｜実用的なSRAN-Radio-Network-Performance-Optimizationテスト対策書試験｜最高のMN: NCSS NPS - SRAN Radio Network Performance Optimization Certification Exam | GS40-NPS-SRPER-E-S03-2510教育資料

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                      Nokia MN: NCSS NPS - SRAN Radio Network Performance Optimization Certification Exam | GS40-NPS-SRPER-E-S03-2510 認定 SRAN-Radio-Network-Performance-Optimization 試験問題 (Q23-Q28):

                      質問 # 23
                      During an intra-gNB DU handover , what is the role of the RRC Reconfiguration message sent by the gNB- CU to the UE?

                      正解：A

                      解説：
                      The correct answer is A .
                      During an intra-gNB DU handover , the UE is moved from one cell/DU resource to another under the same gNB-CU control. The gNB-CU coordinates the handover preparation and sends an RRC Reconfiguration message to the UE.
                      The role of this message is to provide the UE with the required handover command information, such as:
                      Target PCell configuration
                      Radio resource configuration
                      Mobility control information
                      Random access configuration, when needed
                      Measurement or reconfiguration-related information
                      After receiving the RRC Reconfiguration , the UE performs the handover execution procedure toward the target cell and later responds with RRC Reconfiguration Complete .
                      Option B is incorrect because admission control and source-cell scheduling suspension are internal network- side procedures, not the UE-facing role of the RRC Reconfiguration message.
                      Option C is not the best answer because user-plane resource transfer is handled between gNB-CU/gNB-DU functions, while dedicated preamble allocation may be part of the configuration but is not the main purpose of the message.
                      Option D is incorrect because RLC reestablishment and PDCP recovery are lower-layer/user-plane handling actions, not the primary purpose of the RRC Reconfiguration message.
                      Therefore, the correct role is:
                      It instructs the UE to perform handover to the target PCell and provides measurement/configuration information.


                      質問 # 24
                      What is the mandatory prerequisite to implement DSS , or Dynamic Spectrum Sharing ?

                      正解：B

                      解説：
                      The correct answer is D .
                      DSS allows LTE and 5G NR to share the same spectrum dynamically , instead of requiring a separate dedicated NR carrier. Therefore, dedicated NR spectrum is not mandatory. DSS is also not limited to TDD only; it is commonly used in FDD spectrum refarming scenarios as well. Public RAN references describe DSS as a mechanism where LTE and NR coexist in the same frequency band and share spectrum dynamically.
                      From an SRAN architecture point of view, the mandatory deployment condition is that the radio platform must support LTE and NR coexistence on the same radio resources. That requires RF module sharing or a DSS-capable shared radio configuration.
                      So the correct prerequisite is:
                      RF module sharing.


                      質問 # 25
                      Consider that the UE is performing handover from LTE to NR with the help of features CB007742 / CB008731 . Referring to the picture below, at what stage can the handover be triggered from LTE to NR?

                      正解：D

                      解説：
                      The correct answer is C: From Stage 3 .
                      In LTE-to-NR mobility, the handover or redirection decision is normally based on a combination of:
                      LTE serving-cell signal level becoming weak enough, and
                      NR neighbor-cell signal level becoming strong enough.
                      From the diagram:
                      In Stage 1 , LTE is still good and NR is still weak, so LTE-to-NR HO should not be triggered.
                      In Stage 2 , the NR neighbor signal is improving, but the required combined LTE/NR mobility condition is not yet fully satisfied.
                      In Stage 3 , the NR neighbor signal has crossed the required NR threshold, while the LTE serving-cell signal has degraded enough to justify moving the UE from LTE to NR. This is the first valid stage where LTE-to- NR HO can be triggered.
                      In Stage 4 , NR is already clearly strong, but the handover could already have been triggered earlier in Stage 3.


                      質問 # 26
                      Which of the following statements about CBRA , or contention-based random access , is correct?

                      正解：B

                      解説：
                      The correct answer is B .
                      In contention-based random access , the UE chooses a random access preamble by itself from a configured pool of available contention-based preambles. This is typically used when the UE does not yet have a dedicated connection or when the network has not assigned a dedicated preamble.
                      Because multiple UEs may choose the same preamble at the same time, preamble collision is possible . That is why CBRA requires a contention resolution step.
                      Option C describes contention-free random access , not CBRA. In contention-free random access, the network assigns a dedicated preamble to the UE, so collision risk is avoided and contention resolution is not required.
                      Option A is not the correct CBRA principle being tested. RACH false detection can be a receiver/design issue, but it does not define the CBRA procedure.
                      Option D describes a possible NSA signaling behavior around access failure handling, but it is not the core correct definition of CBRA.
                      Therefore, the correct CBRA statement is:
                      The UE autonomously selects a preamble from the configured range and starts the random access procedure.


                      質問 # 27
                      What is the role of admission control in 5G networks ?

                      正解：C

                      解説：
                      The correct answer is D .
                      Admission control is responsible for deciding whether a new UE connection, bearer, service, or session can be accepted by the cell without negatively affecting existing users and services.
                      In 5G RAN, admission control checks available radio resources such as:
                      * PRB availability
                      * PDCCH/PUCCH capacity
                      * UE context capacity
                      * QoS requirements
                      * GBR or non-GBR bearer requirements
                      * Cell load and congestion status
                      It does not directly manage modulation schemes; that is handled by link adaptation. It also does not directly increase spectral efficiency or optimize downlink throughput, although good admission control indirectly protects user experience and avoids overload.
                      So the main role of admission control is:
                      To check whether there are enough resources for new connections.


                      質問 # 28
                      ......

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