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NEW QUESTION 22
The SINR of each codeword can be obtained through the Probe drive test tool, and the higher the SINR, the better.
- A. True
- B. False
Answer: A
NEW QUESTION 23
In the mobile communication system, what are the commonly used interference suppression methods? (multiple choice)
- A. Increase the isolation between antennas
- B. Increase protective belt
- C. Install filter
- D. Apply to change frequency band
Answer: A,B,C
NEW QUESTION 24
The single-station verification test only needs to verify whether the cell status in the idle mode is normal.
- A. False
- B. True
Answer: A
NEW QUESTION 25
What are the principles that need to be followed when planning LTE neighboring cells? (Multiple choice)
- A. For dense urban areas and ordinary urban areas, due to the relatively close distance between stations (0.3-1.0 km), neighbouring areas should do more
- B. Neighborhoods that are directly adjacent to the geographic location are generally regarded as neighboring cells
- C. Because there are no sequential I and possible questions in LTE neighboring cells, and the detection period is very short, it is only necessary to consider not missing neighboring cells, and it is not necessary to sort neighboring cells strictly according to signal strength.
- D. Turn on ANR to completely replace the neighborhood planning of the initial network
Answer: A,B,C
NEW QUESTION 26
Which of the following format files can the Log file be converted to? (Multiple choice)
- A. The extension is .docx file
- B. The extension is .dlf fil
- C. The extension is .csv and the test data is separated by a separator (such as a comma, a semicolon, a period, etc.) in the exported text file.
- D. The extension is .gen and can be imported directly into the Probe.
Answer: B,C,D
NEW QUESTION 27
The LTE system requires an uplink synchronization system. Uplink synchronization is mainly to eliminate interference between different users in a cell.
- A. True
- B. False
Answer: A
NEW QUESTION 28
The single-site verification test only needs to verify whether the cell status is normal in the idle mode.
- A. False
- B. True
Answer: A
NEW QUESTION 29
In the newly-built two-channel indoor sub-system, because LTE uses the MIMO feature, the uplink and downlink rate of the two-channel indoor sub-system is twice that of the single-channel indoor sub-system.
- A. False
- B. True
Answer: A
NEW QUESTION 30
During the test, the bit error rate below 20% is normal.
- A. False
- B. True
Answer: A
NEW QUESTION 31
What are the following reasons that may cause Intra-LTE to fail to handover or fail to handover? (multiple choice)
- A. The coverage is too poor, and the eNB cannot correctly demodulate the measurement report reported by the UE
- B. Neighbor Missing
- C. T301 timer configuration time is unreasonable
- D. interference
Answer: A,B,D
NEW QUESTION 32
What is included in the detailed survey of the base station? (multiple choice)
- A. Determine at least 3 alternative sites
- B. Antenna selection
- C. Computer room construction
- D. Base station location
- E. Equipment installation location
Answer: B,C,D,E
NEW QUESTION 33
Which of the following factors affect the theoretical peak of LTE cells? (multiple choice)
- A. Communitybandwidth
- B. UEability
- C. MIMOmodel
- D. Modulation(MCS)
Answer: A,C,D
NEW QUESTION 34
In the case of FTP download or upload (or packet filling) without manual intervention, the throughput rate should be maintained at this time. If there is a sudden drop, call drops may occur.
- A. True
- B. False
Answer: A
NEW QUESTION 35
LTE neighbors are divided into same-frequency neighboring cells, different-frequency neighboring cells, different system neighboring cells, and blacklist neighboring cells.
- A. True
- B. False
Answer: A
NEW QUESTION 36
The drive test scenario judges the success of the handover, usually based on the signaling. On the terminal side, which of the following signaling starts the handover process?
- A. Handover Command
- B. Measurement Report
- C. Measurement Control
- D. Handover Request
Answer: B
NEW QUESTION 37
RSRP reference signal received power refers to the average signal power received by all REs of a Symbo bearer Reference Signa within the measured frequency bandwidth.
- A. True
- B. False
Answer: A
NEW QUESTION 38
The current frequency spectrum of China Mobile's F-band is 1880MHz to 1900MHz.
- A. True
- B. False
Answer: A
NEW QUESTION 39
Which of the following factors does not need to be considered when dividing a Cluster?
- A. Test route
- B. terrain
- C. Traffic
- D. weather
Answer: D
NEW QUESTION 40
Which of the following is not a weak coverage solution?
- A. Adjust neighbor relations
- B. Check whether the room sub-system or repeater is working normally, and check whether there is other radio interference
- C. Adjust the antenna azimuth and downtilt angle, increase the antenna height, and replace the high-altitude wire, etc.
- D. adjusteNodeBTransmit power
Answer: A
NEW QUESTION 41
The uplink interference problem is judged by checking the RSRP of each cell.
- A. False
- B. True
Answer: A
NEW QUESTION 42
Which of the following is the correct description of the following LTE neighboring cell planning? (Multiple choice)
- A. For dense urban areas and ordinary urban areas, the distance between stations is relatively close (0.3-1.0kilometer),Neighborhood should do more
- B. Geographically directly relatedNeighboring cells are generally used as neighboring cells
- C. becauseforLTEofThe neighboring area does not exist in orderI,CanProblem, and the detection cycle is very short, so you only need to consider not missing neighbors, not wantSort neighboring cells strictly according to signal strength
- D. ANRThe function can completely replace the initial networkNeighbourhood planning
Answer: A,B,C
NEW QUESTION 43
TD-LTE UE is set to trigger intra-frequency handover by A3 event. In order to reduce the trigger of A3 event, which of the following parameters can be increased? (multiple choice)
- A. eventA30ffset
- B. celllnd ivid ua IOffset_s
- C. celllnd ividualOffset_n
- D. hysteresis
Answer: A,B,D
NEW QUESTION 44
Which of the following causes the interference in the system? (Multiple choice)
- A. Illegal use of LTE frequency bands
- B. Interference caused by data configuration (time slot ratio, PCI, frequency)
- C. LTE TDD frame out of sync
- D. TDD ultra-long-distance interference (interference from DwFTS to UpPTS)
Answer: B,C,D
NEW QUESTION 45
In an LTE network, an interface can be configured between eNODEB and MME. Which of the following is the interface name?
- A. S2
- B. S1
- C. X1
- D. X2
Answer: B
NEW QUESTION 46
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