Tutorial Assessment Huawei HCNA and HCNP 2014_Answers

Tutorial Assessment Huawei HCNA & HCNP Nexwave 2014

I.

Propagation and Antenna Theory

1. [True/False] In the radio propagation, propagation, Fast Fading (Shadow Fading) is in normal distribution, distribution, while Slow Fading (Rayleigh (Rayleigh Fading) is in Rayleigh distribution. False  True 2. [True/False] Doppler Effect Effect has great impact on the narrow-band narrow-band radio system but less less on the broad-band radio system system  True False 3. [True/False] In WCDMA mobile communication communication system, the diffraction diffraction capability is worse and the penetration penetration capability is better at frequency 2 GHz than that at GSM 900 MHz True  False 4. [Multiple Choice] In the WCDMA system, system, methods against fading include: Adopt Rake Receiver to concentrate delayed and disperse energy Adopt powerful encoding, interleaving and retransmission protocol to increase redundancy and time diversity, thereby helping the receiver recover user bit from the fading  As a broadband system, WCDMA itself supports frequency diversity to withstand fading Adopt fast power control and intrinsic diversity reception of Rake Receiver to reduce signal power fading 5. [True/False] Normally different different antenna diversity modes will be adopted in urban and rural area, space space diversity antenna will be used in urban area and polarization diversity will be used in rural area to overcome fast fading. False  True 6. [True/False] Walfish-Ikegami Walfish-Ikegami Propagation Model is defined to designed designed macro cell forecast with frequency frequency range 800-2000 MHz and cell radius range 1-20 km  True False 7. [True/False] The VSWR of antenna should not not be less than 1.5 True  False 8. [True/False] Antenna gain is related related to radiation pattern, the more narrow the major lobe is, the higher higher antenna gain is True  False 9. [True/False] dBi is defined as the energy centralizing capability of the the actual antenna in relation to isotropic isotropic antenna True  False 10. [True/False] To antenna gain: 10dBi = 12.5dBd False  True 11. [True/False] To have an antenna with better directivity and stronger stronger anti-interference capability, capability, one should choose antenna with wider wider half-power beam width False  True 12. [Multiple Choice] To tuning coverage area of a cell, one can adjusting antenna tilt, such as: Mechanical Down tilt Electrical Down tilt  Adjusting FE Adjusting ME RE 13. [True/False] Front to Back Ratio should be greater than 25dB if to be applied in urban area. True  False 14. [True/False] To cover the tunnel, if the length of tunnel is longer than 2km, we suggest using leaky cable to cover it. True  False 15. [Single Choice] In radio propagation model tuning, the purpose of geography binning is:  Eliminate slow fading, remain the effect of the fast fading.  Eliminate slow fading and fast fading Eliminate fast fading, remain the effect of slow fading  All above is wrong


II.

Radio Network Dimensioning

16. [True/False] Engineer can use CAN tool to configure neighbor planning and SCP tool to configure scrambling code planning True  False 17. [True/False] In WCDMA link budget, Interference Margin will reflect the load of system. True  False 18. [True/False] In Radio Network Dimensioning, according according to link budget, we can get cell capacity. False  True 19. [Single Choice ] In uplink budget calculation, the body loss for PS service is  2 dB 0 dB  3 dB  1 dB 20. [Single Choice] For having a load factor 75%, we should set uplink Interference Margin:  0 dB  3 dB  4 dB 6 dB 21. [Single Choice ] Which is correct to depict the receiver sensitivity  PN = K  T / (BW  NF) PN = K T BW NF  PN = K  T  BW / NF  PN = K  T  NF / BW 22. [Single Choice] Eb/No required has no relation with:  Configuration of diversity  Bearer type System Bandwidth  Multi-path channel condition 23. [Single Choice ] The noise of the receiver has no relation with:  Working temperature  System bandwidth  Noise Figure (NF) Working humidity 24. [Single Choice ] For HSDPA radio network planning, the downlink cell target load is usually set as:  50%  75%  100% 90% 25. [Single Choice ] In downlink budget, the calculation of downlink cell load factor has no relation with:  Orthogonal Factor The Noise Factor  Activity Factor  Adjacent-cell interference factor 26. [Single Choice ] For the CS 12.2K Service, the maximum power of UE usually set as: 21 dBm  27 dBm  24 dBm  33 dBm 27. [True/False] In high speed motion, Fast Power Control works better than Interleaving to prevent Fast Fading True  False


III.

WCDMA Overview and Processing Procedure

28. [True/False] In WCDMA band, if we have frequency 2120 MHz as a DL central frequency, than UARFCN DL is 10550 False  True 29. [True/False] In WCDMA network, the Interface between NodeB & RNC is called Iub, the interface between RNC & RNC is called Iur, the interface between RNC & CN is called Iu, interface between UE & NodeB is called Uu True  False 30. [True/False] Service Area Identification (SAI) is the only identifier of a service cell in form of MCC+MNC+LAC+SAC MCC+MNC+LAC+SAC True  False 31. [Multiple Choice] Which are the following functions not physical level function:  Modulation  Coding  Spreading Load Control 32. [Single Choice] In WCMA network, different services are assigned with different OVSF codes. Which of the following downlink OVSF code can be assigned to 384 kbps services? CCH 8,1  CCH 4,0  CCH 4,1  CCH 8,0 33. [Single Choice] Which of the following modulation mode is used in R4  GMSK  16QAM  64QAM QPSK 34. [Single Choice] Channelization code is used to distinguish (____) in uplink  Different cells  Different users Different physical channel of one u ser  Different user in one cell 35. [Single Choice] In the following, which in not the channel coding on the downlink channel  Convolutional Coding  No Coding AMR  TURBO Coding 36. [Single Choice] Which of the following entities does not process the voice traffic data in Uu-Interface PDCP  Physical Layer  RLC  MAC 37. [Single Choice] Which of the following entities does not process the PS traffic data in Uu-Interface  PDCP  Physical Layer RRC  MAC 38. [Single Choice] SCH can be classified as PSCH and SSCH. PSCH only carries one type of PSC, but SSC in SSCH can be classified as (__) types  1 15  16  256 39. [True/False] In CELL_PCH state, no data are transferred in both upl ink and downlink, UTRAN doesn’t know where UE is located, but in CELL_FACH state, UE is active, few data is transferred in both uplink and downlink, so UTRAN knows which cell UE is in. False  True


40. [Single Choice] The PRACH resources can be classified into several (_____), so as to provide RACH application with different priorities ASC  Sub channel  AC  Signatures 41. [Multiple Choice] The UE shall read System Information Broadcast Broadcast on a BCH transport channel when the UE in which work mode? Idle Mode CELL_PCH CELL_FACH URA_PCH 42. [Single Choice] In WCDMA system, the AC-ASC mapping information is optimal and used for only in system information block?  SIB 1  SIB 3 SIB 5  SIB 11 43. [Single Choice] In WCDMA system, DRX duration duration coefficient in idle state is delivered in:  MIB  SB SIB 1  SIB 5 44. [Multiple Choice] In System Information Block, SIB 5 included:  CPICH Power  PI number in one PICH frame  Available sub-channel number UL interference level 45. [Multiple Choice] In WCDMA system, Np is the PI number in one PICH frame, the values of Np can be: 18 36 72 144 46. [Single Choice] Which description of P-CPICH in the following is incorrect: The transport rate is 15 Kbps fixed  Normally the power setting is 10% of the total power  On P-CPICH, the scrambling is after spreading  On P-CPICH, use the spread factor of SF=256 47. [Single Choice] When mapping QoS into physical level parameter, for below item which one is not the physical level configuration parameter?  Channel coding type  Power offset  Interleaving length TFCI 48. [Multiple Choice] RAB Integrate Priority are set according to:  APR Traffic Class HSPA or DCH THP (for interactive service only) 49. [Multiple Choice] Normally, the below condition will be defined as drop call:  Received any BCH information (system information) Received RRC Release message and the release cause is Not Normal Received any of the message of CC Disconnect, CC Release Complete, CC Release, and the release cause are Not Normal Clearing or Not Normal, Unspecified  Received the RB release message


50. [Multiple Choice] Which of the following reason can trigger cell update? Paging response There’s uplink data need to be transfer  UE location changed Periodic update 51. [True/False] The more neighbor we configure, the better network performance will be.  True  False 52. [Single Choice] Which one is wrong about neighbor cell optimization?  Neighbor cell missing may cause call drop  After drive test, comparing UE signal with Scanner will assist engineer to find missing neighbor more easily  Neighbor cell include intra-frequency, inter-frequency, and inter-system The more neighbor cell we configure, the better network performance will be

IV.

HSDPA and HSUPA overview

53. [Single Choice] HSDPA is introduced in:  R4 R5  R6  R7 54. [Multiple Choice] The key technologies of HSUPA include: HARQ  16QAM AMC Fast Scheduling 55. [Single Choice] Which of the following parameter is used for uplink DPCCH initial synchronization  Trifailure  T312  N315  NInsyncInd 56. [Single Choice] in MIMO, which PCI should be confirm according to UE’s channel status evaluation? W1  W2  W3  W4 57. [Single Choice] For HSUPA, which channel is used to transfer ACK/NACK information? HICH  AGCH  E-DPCCH  HS-DPCCH 58. [Single Choice] In WCDMA, a single HS-PDSCH code (one SF16 code) can provide maximum data rate up to?  384 kbps 960 kbps  1920 kbps  2 Mbps 59. [Multiple Choice] Which of the following description about HSUPA is correct?  HICH and RGCH are share a SF 256 OVSF code SI information is sending on E-DPDCH Only the served RLS can send RG UP, RG HOLD and RG DOWN, non-served RLS can only send RG HOLD and RG DOWN  The closed loop power control command for HSUPA is sending on E -DPCCH 60. [Multiple Choice] Which of the following description about HSUPA is correct?  HSUPA when using TTI=10ms, the maximum bit rate cannot exceed 2Mbps  E-DCH is an uplink common transport channel Only when there is no DPDCH in uplink, E-DPDCH can use up to 4 OVSF code HSUPA have introduced in 2 MAC entity, which MAC-es is in RNC, M AC-e in in NodeB


61. [Multiple Choice] Which of the following description about HSDPA is correct? HS-DPDCH is used to feedback ACK/NACK and CQI information to the NodeB HSDPA key technologies include AMC, HARQ, 16QAM, fast scheduling The current HSDPA scheduling algorithm HUAWEI used is RR algorithm  HSDPA TTI can flexible change between 2ms and 10ms during fast scheduling 62. [Multiple Choice] In HSUPA, E-DPDCH E-DPDCH is used to send L1 control information which include: RSN E-TFCI Happy Bit  SI

V.

Radio Resources Management

63. [Multiple Choice] In open loop power control of PRACH, the initial transmission power of the preamble is determined by which factors? UL Interference PCPICH DL TX Power Constant Value CPICH_RSCP 64. [Multiple Choice] What are the targets of WCDMA Power Control? Control?  Transmit the power as big as possible to guarantee communication for each user Adjust transmit power to guarantee communication quality in uplink and downlink Overcome “Far-Close Effect” Overcome shadow and fast fading 65. [Multiple Choice] Load controls between cells include: Inter-frequency cell load balance OLC  Cell breathing PUC 66. [Single Choice] The Potential User Control algorithm is to adjust the system parameters related to (___) based on the current load to select the optimal cell for users before access begins Cell selection - reselection  Handover  Paging  Power Control 67. [Multiple Choice] Which of the below description about load control is correct?  Redirection information in RRC will be sending in message: RRC setup reject  Service DRD can be only proceed during RAB setup before RAN12  Queuing action should be perform before Preemption (if there is)  CAC algorithm only perform admission for 4 type of radio resources: Code, Power, CE and IuB 68. [Multiple Choice] Which of the below action can be used in Overload Control? TFC Control UE Transfer from DCH to FACH UE release BE rate reduce 69. [Multiple Choice] Which of the following action may be included in IAC process  CAC DRD Queuing Rate negotiation 70. [Single Choice] Which of the following description is wrong about uplink Inner Loop Power Control?  If SIR measurements is greater than SIR target, than TPC = -1 to decrease the transmission power If SIR measurements is lower than SIR target, than TPC = 1 to increase transmission power Adjust DPCCH Transmission Power with DPCCH = TPC TPC_cmd TPC_cmd is achieved by different algorithm


71. [Multiple Choice] Power Control is not adopted for which physical channel? SCH  RACH PCCPCH  DPDCH 72. [Multiple Choice] In soft handover optimization, which action can be benefit for reducing Ping-Pong handover?  Increase 1A & 1B hysteresis Increase 1A & 1B threshold Increase time to trigger length Increase level 3 filter factor 73. [True/False] The difference between Soft Handover and Softer Handover; Softer Handover happen in the same NodeB and signal branches are combined in NodeB by using Selection Combination mode; Soft Handover happen in different NodeB and signal branches are combined in RNC by using Maximal Ratio Combination mode. False  True 74. [True/False] In IRAT handover procedure, RNC will send “Active Set Update” message to UE.  True False 75. [Single Choice] During soft handover, UE is in (___) state  CELL_PCH  URA_PCH CELL_DCH  CELL_FACH 76. [Single Choice] About measurements measurements report, report, which one is incorrect?  1B event means the quality of one cell in active set is worse than the best c ell  1D event is triggered by the best cell change  1F event means the quality of a cell is lower than an absolute threshold 1A event means one cell signal quality is very close to the best cell or active set cells quality. UE will still report 1A event when active set is full


VI.

Tools Experiences

77. [True/False] In Swap Project, we use iSwap tool to map the parameters and iConverter tool to map the neighbor relation  True  False 78. [True/False] In measure report, it shows the CPICH Ec/No is 28, RSCP is 30, the the actual Ec/Io=-10(dB), actual RSCP=-85(dBm) RSCP=-85(dBm)  True  False 79. [Multiple Choice] Which data can be imported into Assistant?  HUAWEI RNC Performance data HUAWEI RNC Tracing data  Nemo test data GENEX PROBE data 80. [Multiple Choice] While prediction with U-net, which can be generated without simulation? Coverage by transmitter  Downlink total noise Overlapping Zones Coverage by signal level

VII.

Huawei Hardware & Software Version Knowledge

81. [True/False] In RAN11, 64QAM max one user throughput is 21Mbps, 2x2 MIMO max throughput is 28Mbps True  False 82. [True/Flase] DBS3900 consist of BBU, MRFU, and RRU False  True 83. [True/False] RRU 3804 max output power is 80W  True False 84. [True/False] In RAN 12, 64QAM + DC HSDPA max throughput of one user is a 42Mbps; 64QAM + MIMO max throughput throughput is 42 Mbps False  True 85. [True/False] In RAN12, for DC (Dual Carrier) users, the UL channel could carry on the primary carrier and secondary carrier.  True False 86. [True/Flase] In RAN13, the max peak rate of one user in downlink is 84Mbps True  False 87. [True/False] Each RRU3908 can support maximum maximum up to 4 UMTS carriers True  False 88. [True/False] In RAN12, Systematic Solution of Tackling Signaling Storm include: Smart UE state transition to reduce signaling; Improve RNC & NodeB Capability; Micro & Femto NodeB to offload signaling traffic; Specific and Professional service to ensure successful implementation  True  False

Tutorial Assessment Huawei HCNA and HCNP 2014_Answers

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