SFBC is a transmit diversity technique that mainly obtains transmit diversity gain for areas with low SINR, such as cell edges. Compared to STBC, SFBC is a space-frequency two-dimensional transmit diversity, while STBC is a space-time two-dimensional transmit diversity.

SFBC is a transmit diversity technique that mainly obtains transmit diversity gain for areas with low SINR, such as cell edges. Compared to STBC, SFBC is a space-frequency two-dimensional transmit diversity, while STBC is a space-time two-dimensional transmit diversity.A . TrueB . FalseView AnswerAnswer: A

March 17, 2019 No Comments READ MORE +

Which of the following are the solutions of the missed neighbor cell? (Multiple Choice)

Which of the following are the solutions of the missed neighbor cell? (Multiple Choice)A . Adjust cell switching priorityB . Manually add neighbor cell configurationC . Check the RF (Radio Frequency) channelD . Open ANR algorithm switchView AnswerAnswer: BD

March 1, 2019 No Comments READ MORE +

Which of the following command can query the model and supported band of RRU?

Which of the following command can query the model and supported band of RRU?A . DSP RRUB . LST RRUC . DSP BRDMFRINFOD . DSP BRDView AnswerAnswer: C

February 20, 2019 No Comments READ MORE +

In LTE system, what is the length of the wireless subframe?

In LTE system, what is the length of the wireless subframe?A . 0.5msB . 1msC . 10msD . 7msView AnswerAnswer: B

February 7, 2019 No Comments READ MORE +

In which of the following process, MME use DNS parse function based on GUTI to select new MME? (Multiple Choice)

In which of the following process, MME use DNS parse function based on GUTI to select new MME? (Multiple Choice)A . AttachB . TAUC . HandoverD . Service RequestView AnswerAnswer: AB

January 27, 2019 No Comments READ MORE +

Which of the following interface is used to connect between eNodeB?

Which of the following interface is used to connect between eNodeB?A . IubB . S1C . X2D . S5View AnswerAnswer: C

January 24, 2019 No Comments READ MORE +

Both the indoor distribution RRU3151 and RRU3152 series support 2T2R configuration.

Both the indoor distribution RRU3151 and RRU3152 series support 2T2R configuration.A . TrueB . FalseView AnswerAnswer: B

January 11, 2019 No Comments READ MORE +

The SAE-GW is a combination of two network elements, SGW and PGW.

The SAE-GW is a combination of two network elements, SGW and PGW.A . TrueB . FalseView AnswerAnswer: A

January 1, 2019 No Comments READ MORE +

The installation position of the GPS antenna to broaden its view of the sky, no tall buildings around. GPS antenna upright angle should not be less than 90°.

The installation position of the GPS antenna to broaden its view of the sky, no tall buildings around. GPS antenna upright angle should not be less than 90°.A . TrueB . FalseView AnswerAnswer: A

December 28, 2018 No Comments READ MORE +

When the user is in ECM-IDLE state, which of the following is the user's location granularity that the network can know?

When the user is in ECM-IDLE state, which of the following is the user's location granularity that the network can know?A . TAB . CellC . TA listD . Do not know any location informationView AnswerAnswer: C

December 28, 2018 No Comments READ MORE +