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LDCE Wireless > Drive test for 2G to 5G > Flashcards

Drive test for 2G to 5G Flashcards

1
Q

Choose 2G GSM drive test parameters
1) Rx level
2) Rx Quality
3) C/I: The carrier-over-interference ratio
4) FER: Frame Erasure Rate

A

All of them

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2
Q

In 2G drive test, FER stands for
1) Frame Error Rate
2) Frame Erasure Rate

A

Frame Erasure Rate
shows dropped frames

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3
Q

2G GSM drive test parameter FER is indication of
1) voice quality
2) data quality

A

voice quality
FER: Frame Erasure Rate

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4
Q

2G GSM drive test parameter Rx quality is measured on the basis of
1) FER
2) BER

A

BER: Bit Error Ratio
Range 0-7 where value 0 denotes minimum BER

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5
Q

Choose 3G GSM drive test parameters
1) CPICH Ec/No
2) CPICH RSCP
3) RSSI
4) SIR

A

all of them
1. Chip Energy by Noise- Common Pilot channel Ec/No
2. Received signal Code Power
3. Received Signal Strength Indicator
4. Signal to Interference ratio

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6
Q

In 3G drive testing, _____ shows the level of Noise disrupting the specific CPICH
1) CPICH Ec/No
2) CPICH RSCP

A

CPICH Ec/No
0 to -7 Good
to -10 Acceptable
10 to -36 Bad

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7
Q

In 3G drive testing, Ranges for Ec/No: (-36 to 0)

A

0 to -7 Good
to -10 Acceptable
10 to -36 Bad

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8
Q

In 3G drive testing, Tx Power is the power of a mobile station measured in the dedicated mode. It ranges from ______dBm to ________dBm

A

50 to -50

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9
Q

In 3G drive testing, choose the correct one
1) RSSI= RSCP + Ec/No
2) RSCP= RSSI + Ec/No

A

1) RSSI= RSCP + Ec/No

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10
Q

Choose 3G GSM drive test parameters
1) SQI
2) RRC STATE
3) TX POWER
4) AS

A

all of them
SQI: Speech Quality Index
AS: active set

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11
Q

3G GSM drive test parameter AS indicates

A

Active Set
Set of scrambling codes on which the user equipment is currently latched on.
There can be at least maximum three scrambling codes in an Active Set.

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12
Q

In 3G drive testing, there can be at least maximum ______ scrambling codes in an Active Set.
1) one
2) two
3) three
4) four

A

three

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13
Q

Neighbor cell that is detected by user equipment as a neighbor
1) MN: Monitored Neighbour
2) DN: Detected Neighbour
3) Active set

A

MN: Monitored Neighbour

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13
Q

The cells detected by UE, which are neither in the Active set nor in the Monitored set
1) MN: Monitored Neighbour
2) DN: Detected Neighbour
3) Active set

A

DN: Detected Neighbour

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14
Q

In 3G drive testing, set of scrambling codes on which the user equipment is currently latched on
1) MN: Monitored Neighbour
2) DN: Detected Neighbour
3) Active set

A

Active set

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15
Q

In 3G drive testing, ______ are used to identify different cells of a node B
1) scrambling codes
2) RRC state

A

scrambling codes

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16
Q

3G GSM drive test parameter SQI stands for

A

Speech Quality Index
It ranges from 0 to 30. 30 being the Best Value

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17
Q

3G GSM drive test parameter RRC state shows

A

the current state of channel as in idle or dedicated

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18
Q

WCDMA use AMR source Coding. AMR vary with different Ranges Highest AMR Value is _____ and lowest AMR value is ______
1) 10.75, 6.20
2) 12.20, 4.75
3) 4.75, 12.20
4) 6.20, 10.75

A

12.20, 4.75

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19
Q

In 3G drive testing, It shows the total signal strength of a UTRA carrier frequency i.e. signal strength of all cells of same frequency at a certain location.
1) RSSI
2) RSCP
3) Ec/No

A

RSSI: Received Signal Strength Indicator

20
Q

In 3G drive testing, the received power on one code measured on the Primary CPICH. It shows the signal strength of a cell. It Indicates Coverage.
1) RSSI
2) RSCP
3) Ec/No

A

RSCP: Received signal Code Power

21
Q

In 3G drive testing, it shows signal quality
1) RSSI
2) RSCP
3) Ec/No

A

Ec/No
received energy per chip divided by the
power density in the band

22
Q

In 3G drive testing, value of Ec/No>_____ is considered good
1) -10dB
2) -15dB
3) -20dB
4) -25dB

23
Q

In 3G drive testing, reasons of poor Ec/Io
1) poor RSCP
2) missing neighbors
3) overshooting
4) pilot pollution

A

all of them

24
Q

In 3G drive testing, UTRA cells currently assigning a downlink DPCH to
the UE constitute _______
1) MN: Monitored Neighbour
2) DN: Detected Neighbour
3) Active set

A

Active set

25
Q

Probable candidate sectors for handovers
1) MN: Monitored Neighbour
2) DN: Detected Neighbour
3) Active set

A

MN: Monitored Neighbour

26
Q

In 3G drive testing, These must not have high signal strengths otherwise they will degrade the aggregate Ec/No & lead to call drops.
1) MN: Monitored Neighbour
2) DN: Detected Neighbour
3) Active set

A

DN: Detected Neighbour

27
Q

In 3G drive testing, Physical optimization should be done so that there _______ (should be/should not be) many Pilots available at same spot with equally high signal strengths.

A

should not be.
All other strong signals received when Active Set Size is full, act as interference which degrades the
performance of the system

28
Q

The main KPIs relevant to operator losses.
1) The Call Setup Success Rate (CSSR)
2) dropcall rate (DCR)

29
Q

Drive test is done while
1) planning the network development
2) the optimization stage of network development

A

both
The data is collected by drive test tool in the form of Log files

30
Q

Types of drive testing
1) Network Benchmarking
2) Optimization & Troubleshooting
3) Service Quality Monitoring

A

all of them

31
Q

Service Quality Monitoring is typically carried out in an automated fashion

32
Q

Data Collection Tools
1) TEMS Investigation
2) Nemo Outdoor
3) JDSU E6474A
4) Accuver XCAL

A

all of them

33
Q

Post-processing tools
1) Actix Analyzer/Spotlight
2) Accuver XCAP
3) TEMS Discovery LTE
4) Accuver XCAL

A

1,2,3
4) Accuver XCAL is a data collection tool

34
Q

In 4G LTE drive testing, it indicates coverage
1) RSRP
2) RSRQ
3) RSSI
4) RSCP

A

RSRP: Reference Signal Received Power

35
Q

In 4G LTE drive testing, it indicates quality of the received signal
1) RSRP
2) RSRQ
3) RSSI
4) RSCP

A

RSRQ: Reference Signal Received Quality

36
Q

In 4G LTE drive testing, it indicates total received wide-band power (measure in all symbols) including all interference and thermal noise
1) RSRP
2) RSRQ
3) RSSI
4) RSCP

A

RSSI: Received Signal Strength Indicator

37
Q

In 4G LTE drive testing, it contains information sent from a UE to the eNode-B to indicate a suitable downlink transmission data rate, i.e., a Modulation and Coding Scheme (MCS) value
1) RSRP
2) RSRQ
3) RSSI
4) CQI
5) SINR

A

CQI: Channel Quality Indicator
CQI is a 4-bit integer and is based on the observed signal-to-interference-plus-noise ratio (SINR) at the UE.

38
Q

In 4G LTE drive testing, the ____ reported values are used by the eNode-B for downlink scheduling and link adaptation, which are important features of LTE.
1) RSRP
2) RSRQ
3) RSSI
4) CQI
5) SINR

A

CQI: Channel Quality Indicator

39
Q

CQI=0 indicates
1) full coverage
2) out of range
3) none of the above

A

out of range

40
Q

In 4G LTE drive testing,
wideband power = noise + serving cell power + interference power
1) RSRP
2) RSRQ
3) RSSI
4) CQI
5) SINR

A

RSSI: Received Signal Strength Indicator

41
Q

In 4G LTE drive testing,
1) RSRP=N(RSRQ/RSSI)
2) RSRQ=N(RSRP/RSSI)
3) RSSI=N(RSRQ/RSSI)
4) RSSI=N(RSRP/RSRQ)
Where N is the number of Resource Blocks of the E-UTRA carrier

A

RSRQ=N*(RSRP/RSSI)
Where N is the number of Resource Blocks of the E-UTRA carrier

42
Q

In 5G drive testing, it indicates coverage
1) SS-RSRP
2) SS-RSRQ
3) RSSI
4) CQI
5) SS-SINR

43
Q

In 5G drive testing, The RSRP and RSSI are both measured across the same set of Resource Blocks.

44
Q

In 5G drive testing, in contrast to RSRP measurements, RSRQ measurements are not used when reporting Channel State

45
Q

In 5G drive testing, CSI-RSRP stands for

A

Channel State information - Reference Signal Received Power

46
Q

In 5G drive testing, _______ are used for connected mode mobility, power control calculations, and beam management
1) CSI-RSRP
2) SS-RSRP
2) CSI-RSRQ
3) SS-RSRQ

47
Q

In 5G drive testing, SS-RSRP stands for

A

Synchronisation Signal - Reference Signal Received Power

48
Q

In 5G drive testing, _______ are used for cell selection, cell reselection and mobility procedures
1) CSI-RSRP
2) SS-RSRP
2) CSI-RSRQ
3) SS-RSRQ

LDCE Wireless (15 decks)

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