NCSS_LTE_RA_PaO_2.2_v2_Sabar_

GuidanceofNCSSLTERA PaO 2.2 Exam NCSS LTE Exam Tips Sharing Session Update_02 26-May-2016

1

08/09/2017

© Nokia 2014

1. Power control information in UL is carried over  a. b. c. d.

PUSCH PUCCH PRACH Both Bo th PU PUSC SCH H and and PUC PUCCH CH

1. Power control information in UL is carried over  a. b. c. d.

PUSCH PUCCH PRACH Both Bo th PU PUSC SCH H and and PUC PUCCH CH

2. What is the function of the Primary Synchronization Channel (P-SS)? a. b. c. d.

Provide Provi de LTE LTE radio radio fram frame e sync sync Tra rans nsmi mits ts th the e MIB MIB Provi Pro vide de LTE LTE time timeslo slott sync sync Transmi Tra nsmits ts the down downlink link HARQ HARQ ack/ ack/nack nack

3. Which Information Block contains the power control information ? a. b. c. d.

MIB SIB 1 SIB 2 SIB 3

4. S5 interface support?

a. b. c. d.

Connection of the P-GW to an external data network The bearer plane between an S-GW and P-GW in the same network The bearer plane between an S-GW and P-GW in different networks The control plane between E-UTRAN and MME

C

5. Which interface carries the signaling information between eNodeB and the EPC? a. b. c. d.

X2 S1-U S1-MME LTE-Uu

6. Which physical channel transmits the SIBs (System Information Blocks) in LTE? a. b. c. d.

Physical Broadcast Channel Physical Downlink Shared Channel Physical Downlink Control Channel Physical Control Format Indicator Channel

7. Which feature does NOT provide interference control? a. b. c. d.

LTE1113 eICIC-macro and LTE1496 eICIC-micro LTE 979 IRC for 2 RX paths LTE944 PUSCH masking LTE1800 Downlink interference shaping

8. How many E-RABs are allocated during IMS voice over LTE call? a. b. c. d.

One One One One

default bearer  default non-GBR bearer, One default GBR bearer for IMS Signaling, One dedicated GBR bearer for voice default bearer, One dedicated GBR bearer for IMS Signaling, One dedicated GBR bearer for voice default non-GBR bearer, One default Non-GBR bearer for IMS Signaling, One dedicated voice GBR bearer 

9. What is the correct relation between RSSI and RSRP considering full cell load on downlink? (N is number of PRBs over which the RSSI is measured) a. b. c. d.

RSRP (dBm) = RSSI (dBm)  – 10*Log(12*N) RSRP (dBm) = RSSI (dBm) + 10*Log(12*N) RSRP (dBm) = RSSI (dBm)  – 10*Log(6*N) RSRP (dBm) = RSSI (dBm) + 10*Log(6*N)

10. Which procedure is used to transition from EMM-DEREGISTERED to EMMREGISTERED state? a. b. c. d.

Paging Attach Tracking Area Update Handover 

11. Which tools can be used for model tuning? a. b. c. d.

Nemo Outdoor and Atoll Atoll and scanner  XCAL and scanner  MUSA

12. Which tool belongs to MINT (Management & Intelligence Tool) suite?

a. b. c. d.

Performance Benchmarker  Rise PDDB Radar  

13. Assuming there is no drive test tool available to take logs from a certain new UE model. What is the most suitable eNodeB troubleshooting tool for checking the UE carrier aggregation radio capability? a. b. c. d.

TTI Trace LTE Browser  Emil or S2 control plane signaling wireshark tracing BTS snapshot

14. Which is NOT a main use case provided by RADAR? a. Parameter consistency checks b. Neighbor checks c. SCF creation d. Activated feature list creation

15. Which counter (s) can be used to detect PDCCH blocking? a. M80011C38.CCE_AVAIL_ACT_TTI b. M80011C39_42.AGGx_USED_PDCCH c. M80011C43_46.AGGx_BLOCKED_PDCC H d. M80011C59_61.PDCCH_x_OFDM_SYMB OL

16. When throughput test shows low throughput value for TCP, but UDP throughput is high, what could be the cause? a. b. c. d.

Packet loss somewhere between the core network and eNodeB Shaping is enabled in the transport path between the core and eNodeB Test is done too close to the site Not enough BTS baseband capacity

17. A drive test measurement in an unloaded network and good RF conditions indicates that average ping RTT is about 30 ms while the acceptance target is -50 dBm Strongest neighbour is generating too much interference RSRQ of -10dB is too low since to obatain peak throughput, RSRQ should be > -6dB FTP protocol throughput is degraded by TCP settings of the FTP server or there is packet loss somewhere in end to end transport

27. What is A5 based handover event? a. It is better handover  – RSRP of neighbor cell is a predefined offset better than RSRP of serving cell b. It is coverage based handover  – RSRP of neighbor cell is above predefined threshold c. It is coverage based handover  – RSRP of serving is below certain threshold, while RSRP of neighbor cell is above other threshold d. It is better handover  – RSRP of neighbor cell is a better than RSRP of serving cell

28. A 20MHz cell support 360 UEs with each UE having two allocated DRB. Which of the following parameter setting is most appropriate? It can be assumed that PUCCH capacity has been properly configured. a. b. c. d.

maxNumActDrb=720, maxNumRrc=360, maxNumActUe=10 maxNumActDrb=360, maxNumRrc=360, maxNumActUe=360 maxNumActDrb=360, maxNumRrc=360, maxNumActUe=720 maxNumActDrb=720, maxNumRrc=360, maxNumActUe=360

29. What is the capability of NetAct Optimizer regarding PCI and neighbor optimization? a. b. c. d.

Optimizer can optimize PCIs and create a new PCI-IP table Optimizer can only optimize PCIs but neighbor relations have to be created with the fully UE based ANR feature Optimizer can only remove PCI confusion from neighbor relations When using Optimizer for PCI optimization, existing PCIs cannot be kept but always need to be re-planned within the given scope

30. What is NOT true about LTE link adaptation? a. Link adaptation for LTE is defined separately for PDSCH, PDCCH and PUSCH b. The CQI offset is controlled by the incoming ACK/NACK responses for the initial transmission of each transport block c. BLER calculation can be based on 1st TB transmissions depending on parameter setting d. PDCCH inner loop link Adaptation (ILLA) is calculated based on only the ACK/NACK or DTX information reported by the UE to the eNodeB PDCCH outer link adaptation (OLLA) is calculated based on only the wideband channel quality indicator (CQI) feedback from previous PDSCH transmission

31. Which protocol performs segmentation and reassembly of PDCP packets into smaller blocks and ARQ retransmission? a. b. c. d.

PHY MAC RLC RRC

32. Why is SC-FDMA preferred over OFDMA in the uplink? a. b. c. d.

Subcarrier mapping is easier for SC-FDMA Synchronization is easier for SC-FDMA Equalization is easier for SC-FDMA The Peak-to-Average Power Ratio is reduced in SC-FDMA

33. LTE-A with 100 MHz can increase DL peak data rate up to? a. 1 Gbps (MIMO 4X4, 64 QAM) b. 750 Mbps (MIMO 4X4, 64 QAM) c. 1.5 Gbps (MIMO 4X4, 64 QAM) d. 4 Gbps (MIMO 4X4, 64 QAM)

34. What is significance of capacity limited network? a. b. c. d.

Network traffic is limited due to small coverage range A lot of traffic and limited capacity due to large coverage range Expensive operator CAPEX High cost for operator 

35. What is significance of coverage limited network? a. b. c. d.

The network collect more traffic than it has capacity due to bigger cell range The network collect less traffic than it has capacity due to limited cell range The network is not profitable The network decrease capital expenditures (CAPEX)

36. What is NOT possible cause for an eNodeB triggered radio link failure (FDD case)? a. b. c. d.

CQI RLF Max RLC Retransmission PDCCH Order Failure HARQ RLF

37. What UE feedbacks are required for closed loop Spatial Multiplexing (TM4)? a. b. c. d.

CQI, PMI and PTI CQI and RI CQI and PMI CQI, RI and PMI

38. PDCCH resources are allocated in groups of 1, 2, 4, 8 CCE. What is the motivation for having different CCE aggregation level on PDCCH? a. Higher number of CCEs are assigned for high priority users. For example, 8 CCEs for voice and 1 CCE for nonGBR b. Higher number of allocated CCEs indicates lower scheduling delay c. Higher number of CCEs indicates strongest error control coding and hence better PDCCH link budget d. The number of CCEs is assigned from MME during call setup signalling

39. What is not object of LNCEL in connected mobility? a. b. c. d.

REDIRT IRFIM LNHOIF LNREL

40. Which mobility mechanism allows the UE to move, during a voice call establishment, from LTE cell into a WCDMA cell that the UE has identified via B1 measurement? a. b. c. d.

SRVCC to WCDMA CSFB with redirection CSFB with PS HO Inter-RAT Handover to WCDMA

41. Consider a network where the 3GPP specified basic open loop PUSCH powe r control is used, with parameters alpha=0.7 and P0= -70dBm. Downlink reference signal transmit power in the network is increased from 15dBm to 18 dBm. How will uplink power control react to the change? It can be assumed that the change in average uplink PRB allocation is negligible a. b. c. d.

Transmit power of all UEs increases by 3dB Transmit power of all UEs decreases by 3dB Transmit power of all UEs decreases by 0.7*3dB=2.1db No change in open loop PUSCH transmit power because path loss does not change

42. Which scheduler type uses Channel State Indicator (CSI) measurement during resource allocation? a. b. c. d.

Fair Scheduler  Channel un-aware scheduler  Interference aware schedule Channel aware scheduler 

43. eNodeB provide less than the anticipated throughput, which should not be investigated? a. b. c. d.

Flexi NG and eNodeB interface configuration eNodeB configuration Flexi NG QoS configuration Traffica configuration

44. What community is NOT part of the NPO Communities of Practice ? a. b. c. d.

NPO End User Service Community NPO Mobile access & Backhaul Community NPO project management community GSD NPO community

45. Which file formats can be used to import plans to netact CMO manager? a. b. c. d.

XML and CSV XML only CSV only XML and mdb (MS access database from plan editor)

46. Open loop PUSCH power control with alpha=1 and P0= -100dbm. Assume the current transmit power is -10dBm. If path loss was increased 10dB ,what would be the new PUSCH transmit power? a. b. c. d.

The new PUSCH transmit power is 0 dBm The new PUSCH transmit power is 10 dBm The new PUSCH transmit power is 23 dBm The new PUSCH transmit power is 20 dBm (limited by power headroom)

47. Which SON related feature does not require the use of NetAct Optimiz er? a. b. c. d.

Mobility Robustness (MRO) Minimization of Drive Test (MDT) RACH optimization Physical Cell ID (PCI) optimization

48. Are the propagation models used in the Nokia power budget specific to the LTE Technology ? a. b. c. d.

Yes, the model contains channel equalization due to LTE Cyclic Prefix Yes, the model reflects OFDMA specific properties Yes, the model reflects LTE wideband channel specifics No, but the model support the relevant frequency range, propagation distances and antenna heights

49. An eNodeB eNodeB has two 20MHz cells using using the same carrier frequency frequency.. The PRACH parameters in both cells are the following: PRACH Freq Offset = 5, PRACH Conf  Ind=3, rootseqindex = 0. What is the most probable impact of this configuration on KPIs ? a. b. c. d.

The number of received contention-based preambles preambles is less than the number of RRC Setup Requests Data radio bearer setup succ success ess rate is low low The number of received contention-based preambles preambles is very high compared to the number of RRC Setup Setup Request Intra eNodeB eNodeB hando handover ver preparatio preparation n success success rate is low due to radio radio admissio admission n control control building building

50. How can a certain level of LTE service be guaranteed during the planning phase from the RF point of view? a. b. c. d.

Signal power expresse Signal expressed d as RSRP must must be better than than the minimum minimum threshold threshold Quality Quali ty of the signal signal measured measured as SINR must must be better than than the threshold threshold Both RSRP RSRP and and SINR SINR must be be better better than the the design design threshol threshold d Signall power must be better Signa better than than the design thresho threshold ld while while SINR must be above above -2 dB

51. In a network wide eNodeB software upgrade, upgrade, which is the recommended prerequisite operation? a. b. c. d.

All optiona optionall eNodeB eNodeB featu feature re licenses licenses used used in the the network network are install installed ed to eNodeB eNodeB prior to to the softw software are upgrade upgrade MME and and SAE-GW SAE-GW software software is upgraded upgraded to a compatib compatible le level first first Ipsec Ipse c secu security rity is upgrad upgraded ed to to a compa compatibl tible e level level first Software Soft ware level level if NectA NectAct ct and IOMS IOMS area area upgraded upgraded to a compat compatible ible level level prior prior to eNodeB eNodeB SW SW,, upgrade upgrade EPC is is also recommended to be upgraded in case it is Nokia EPC

52. What element from HetNet (Heterogeneous Networks) needs a donor cell to provide coverage and behaves as a normal eNodeB (i.e. makes radio resource management decisions) without having a fixed transport connection ? a. b. c. d.

Repeater  Relay Home eNodeB (Femto) Micro cell

53. Why is the cyclic prefix used in OFDMA transmission? a. b. c. d.

To avoid inter-sy inter-symbol mbol interferen interference ce due to multipath multipath propagation propagation To provide provide signal signal equaliz equalization ation in the receive receiver  r  Reference Refer ence signal signals s can be inser inserted ted into into the cyclic cyclic prefix prefix Pilott signals Pilo signals can be inserted inserted into into the cyc cyclic lic prefix prefix

54. An An eNodeB has two 20Mhz cells using the same carrier frequency. frequency. First cell has PRACH frequency offset = 5, PRACH config index= 3 and root sequence index = 820. Which of the following parameter settings should not be used for the second cell? a. b. c. d.

PRACH frequency PRACH frequency offset offset = 5, PRACH PRACH config config index = 3, root root sequence sequence index index = 800 800 PRACH PRAC H frequency frequency offset offset = 5, PRACH PRACH config config index = 3, root root sequence sequence index index = 820 820 PRACH PRAC H frequency frequency offset offset = 5, PRACH PRACH config config index = 4, root root sequence sequence index index = 820 820 PRACH PRAC H frequency frequency offset offset = 89, PRACH PRACH config config index = 4, root root sequence sequence index index = 820 820

55. In LTE TDD using frame type 2, how many UL/DL configurations are available to use? a. b. c. d.

4 5 6 7

56. Which physical channel capacity needs to be reviewed when CA is activated? a. b. c. d.

PUCCH PDSCH PUSCH PDCCH

57. A UE is in idle mode camping on an LTE1800 cell with priority 4 and RSRP= -90 dBm. An inter frequency LTE 2600 neighbour cell has priority 5 and RSRP = -100dBm. Assume that RSRQ based cell reselection is disabled, qRxLevMin on both layers is -120 dBm, and Pcompensation = 0. What is the required parameter setting in the LTE 1800 cell in order to make UE reselect to the LTE 2600 cell?

a. Minimum required level from higher priority cell is set to less than -100 dBm (Threshx, high < 20 dB) b. Cell reselection hysteresis is set to less than 10 dB (Qhyst < 10 dB) c. Minimum required serving cell level threshold to select to a lower priority layer is set to higher than -90 dBm (Thresholdserving, low >30 dB) d. Inter-frequency idle mode search threshold is set to higher than -90 dBm (sNonintrSearch >30 dB)

58. What is the purpose of RRC connection re-establishment procedure? a. b. c. d.

Re-activates RRC security only Reconfigure SRB1 to resume data transfer only Reconfigure SRB1 to resume data transfer of RRC msgs and re-activates RRC security Initial Configuration of SRB1 and activation of RRC security

59. Which UE category is required for a UE to be considered an LTE-A terminal? a. b. c. d.

From Cat.4 onwards From Cat.5 onwards From Cat.6 onwards From Cat.7 onwards

60. Suppose that the downlink total transmit power (PA output power) is increased by 3dB in all cells of an interference-limited dense urban network. What happens to the average SINR and average RSRP? Change in network traffic is assumed negligible a. b. c. d.

The average SINR decrease by 3dB and RSRP increase by 3dB Average SINR increases by 3dB and RSRP increase by 3dB Average SINR does not change and RSRP increase by 3dB Neither average SINR nor average RSRP change

61. In a field acceptance testing in a 20 Mhz 2Tx system, downlink peak FTP throughput is 50 Mbps while the acceptance target is 140 Mbps from test tool the number of allocated MIMO streams is 2, average MCS=28 RS SINR=30 dB, CQI=15, average number of allocated PRBs is 40 RSRP=-70 dBm, strongest neighbour RSRP= -105 dBm, serving cell RSRQ=-10 dBm. What is the most probable cause for the low throughput?

a. b. c. d.

Serving cell RSRP is too low as obtaining peak throughput requires RSRP >-50 dBm Strongest neighbour is generating too much interference RSRQ of -10dB is too low since to obtain peak throughput, RSRQ should be > -6dB FTP protocol throughput is degraded by TCP settings of the FTP server or there is packet loss somewhere in end to end transport

62. What are Nokia recommended tools for Radio Network Planning and for Dimensioning? a. Mentum Planet for Radio Network Planning along with excel for dimensioning b. Planning tool selection is flexible depending on customer or project preferences for Radio Network Planning along with Ran Dim as dimensioning tool c. Excel for dimensioning and NetAct Optimizer for Radio network planning d. Atoll tool as one tool for radio network planning and dimensioning as well

63. Where to find most relevant internal network planning documentation? a. b. c. d.

Roadmap pages Customer documentation at NOLS NPO Radio community wiki pages along with Network Engineering pages Nokia Marketing portal

64. What is maximum DL/UL throughput supported by Cat.6 UE? a. b. c. d.

DL (Mbps) 300 UL (Mbps) 50 DL (Mbps) 300 UL (Mbps) 100 DL (Mbps) 450 UL (Mbps) 50 DL (Mbps) 450 UL (Mbps) 100

65. In downlink, the switching between transmit diversity and dual stream MIMO transmission can be based on two UE reported quantities CQI and rank indicator. When Multi-stream MIMO transmission will be used according to Nokia's implementation? a. b. c. d.

Only when both rank indicator and CQI are high When CQI is high and rank indicator is low When CQI is low and rank indicator is high Only when rank indicator is high regardless of CQI value

66. Which feature improves the UL SINR (signal to interference noises radio) in cases of high load which translates into a better cell edge performance? a. b. c. d.

PDCCH link adaptation Transmit diversity for 2 antennas IRC (Interference Rejection Combining) CQI Adaptation

67. Which planning tool shall be used for radio network planning for Nokia projects? a. b. c. d.

Atoll (Forsk) Mentum Planet Asset (AirCom) Nokia is open to use as per customer preferences

68. Which feature(s) have an impact on the number of RRC connected UEs supported by PUCCH? a. b. c. d.

Uplink pro-active scheduling Connected Mode DRX and Carrier aggregation Smart Admission Control Uplink closed loop PUCCH power control

69. To troubleshoot an uplink throughput problem in a live network, a drive test log has been collected together with simultaneous TTI trace. In order to find the correct UE in MAC TTI trace, w hich information is required from drive test log?

a. b. c. d.

IMSI C-RNTI M-TMSI Data Radio Bearer id

70. A UE is in connected mode and A3 offset parameter for intra-frequency measurements has value 3dB. The serving cell RSRP and RSRQ are -100 dBm and -10 dB respectively. What is the criterion for UE triggering a A3 event based on intra-frequency measurements? a. b. c. d.

Neighbour cell RSRQ is higher than -7dB Neighbour cell RSRP is less than -103 dBm Neighbour cell RSRP and RSRQ area higher than -97 dBm and -7dB, respectively Neighbour cell RSRP is higher than -97 dBm

71. Which KPI is excluded as part of a network assessment? a. b. c. d.

Accessibility Retainability Mobility Throughput

72. Which feature is not related with LTE-A? a. b. c. d.

LTE1113/LTE1496 eICIC LTE1691 Uplink Intra eNodeB CoMP for 4RX LTE1900 DL CA – 3CCA 40 MHz LTE1800 Downlink Interference Shaping

73. What is true about Tracking Areas (TA) in LTE? a. b. c. d.

One cell has to be connected with only one TA One cell can belong to several TAs TA must be same as the area served by one MME gateway TA must be exactly the same as the Location Areas in a 3G co-located network

74. How many PRACH burst formats are there in LTE? a. b. c. d.

4 5 6 7

75. Which statement is false about Smart Admission Control? a. It usually works together with the Allocation and Retention Priority feature b. Only CQI1 bearers are supported c. For new GBR-DRB bearers, the forecast on needed resources is based on periodical measurements d. There is no resource reservation for emergency sessions

76. Which functionality is NOT part of eNodeB? a. b. c. d.

Tracking area updates Dynamic Resource Allocation Radio Bearer Control MME selection at attach of the UE

77. When implementing IMS VoLTE services, which QCI needs to be used as the dedicated bearer for VoIP? a. b. c. d.

QCI1 QCI3 QCI5 QCI9

78. What happens if the orthogonality between OFDM subcarriers is lost due to effects such as Doppler? a. b. c. d.

Inter-carrier interference Adjacent Carrier Interference Intersymbol Interference External Interference

79. Which Network elements assigned the IP Address ? a. b. c. d.

eNodeB MME S-GW P-GW

80. VOLTE analysis and optimization service is included under NPO service area ? a. b. c. d.

End User experience optimization Service optimization Network optimization Technology Evolution

81. A customers want to investigate w hy Mobile Terminating CSFB Calls do not reach a VIP Subscriber. Is this possible using eNodeB subscriber trace feature ?

a. No because subscriber trace does not capture paging or RRC Setup messages since it is activated after RRC Setup by MME using S1 Signaling b. Yes, since eNodeB always know the IMSI of the subscriber, all signaling messages related to the subscriber are recorded in the trace c. Yes, Subscriber trace records the paging failure event and the feature event is flagged in Netact TraceViewer  d. Yes, because when subscriber trace is activated, signaling records are collected in all cells of the tracking area where the subscriber is camping in

82. What is an available capacity of DL nGBR traffic # actual load = 35% when IFLBHighloadNonGBRDL = 80% and IFLBTargetloadNonGBRDL = 70% ? a. b. c. d.

0.50000 0.65250 0.65000 0.68870

83. Which are the possible capacity bottlenecks for call setup in LTE ? a. b. c. d.

Paging, PRACH, PUCCH and PDCCH Capacity PDSCH, PRACH, PUCCH and PDCCH Capacity PDSCH, PUSCH, PRACH, PUCCH and PDCCH Capacity Paging, PRACH and PUCCH Capacity

84. Consider UMTS900 and LTE800 cells that share the same physical antenna ports and feeder system. UMTS900 CPICH power is 33 dBm and LTE800 RF Module total output power is 48dBm. Assume that RSCP=100 dBm and that LTE800 has 10MHz system bandwidth. What is the theoretical RSRP for LTE800? The path loss difference between LTE800 and UMTS900 can be assumed 1 dB.

a. b. c. d.

About -99 dBm About -89 dBm About -133 dBm About -111 dBm

85. How does the UE calculate its transmitting power if there is no power control command feedback from eNodeB? a. b. c. d.

UE calculates the Tx Power based on OLPC UE re-uses the value used in the last transmission UE cannot calculate its Tx Power and needs to wait for new power control command feedback from eNodeB UE calculates the Tx Power based on CLPCm

86. What statement is true about Nokia’s Flexi Zone BTS?

a. It supports antenna configurations of 1Tx/2Rx MIMO for one LTE FDD band and a maximum of 3 carriers for TDD. Up to 20 MHz BW is supported for FDD and TDD b. It supports antenna configurations of 2Tx/2Rx MIMO for one FDD LTE and a maximum of 3 carriers for TDD. Up to 20 MHz BW is supported for FDD and TDD c. It supports antenna configurations of 2Tx/2Rx MIMO for single LTE FDD and TDD bands. Up to 10MHz carrier Bandwidth is supported for FDD and TDD. d. It supports antenna configurations of 2Tx/2Rx MIMO for one LTE FDD single band and a maximum of 4 carriers for TDD. Up to 10MHz BW is supported for FDD and TDD.

87. If PRACH density=1 and the maximum recommended contention-based preambles per PRACH slot is 3, what is the maximum number of contention-based preambles allowed in an hour?

a. b. c. d.

About 10 thousand About 100 thousand About 1 million About 10 million

88. In a laboratory acceptance testing with a 20 MHz system, UL UDP througput is 15Mbps while the acceptance RSRP =-60dBm, UL PUSCH transmit power is -10 dBm, MCS = 15 PUSCH BLER = 8%, average allocated power control is used withalpha = 1 and P0 = -108 dBm. MCS 24 is enabled but UL 64 QAM is disabled which is the possible cause/optimisation a. serving cell RSRP is too low as obtaining peak UL throughput request RSRP > -50 dBm b. From PUSCH transmit power of -10 dBm it can be calculated that UE power headroom for transmit therefore PUSCH MSC is limited c. PUSCH power control target P0 of -108 dBm is too low as this result in UL SNR of about 10 - 11 dB in UL d. 64 QAM in UL is disabled

89. A UE makes CSFB to a 3G cell that has the same the Location Area Code (LAC) as the source LTE cell. How is Location…

a. b. c. d.

UE makes Location Update in the 3G cell at the beginning of voice call setup signaling UE makes Location Update after the voice call finishes in case it continues camping in 3G UE does not have to make Location Update since 3G LAC is the same as LTE LAC UE makes Location Update only if 3G Routing Area Code is different from LTE Tracking Area Code.