Among the several randomly access preambles of LTE, which format is suitable for a wide coverage area with a radius of 80 km?

• A.Format 2
• B.Format 1
• C.Format 0
• D.Format 3

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In the downlink middle layer mapping, the number of layers is less than or equal to the number of antenna ports.

• A.True
• B.False

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How many subcarriers does PSS (Primary Synchronization Signal) occupy in the frequency domain?

• A.10
• B.6
• C.108
• D.72

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Regarding blind handover, which of following description are in? (Multiple Choice)

• A.According to the A4 measurement report, the blind handover will select the highest RSRP cell for handover
• B.Blind handover can greatly improve the handover success rate
• C.Blind handover can be used regardless of co-frequency or inter-frequency handover
• D.In the coverage-based inter-frequency handover feature, eNodeB can support the delivery of blind handover event A2

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Which of the following radio bearers can carry NAS messages? (Multiple Choice)

• A.SRB1
• B.SRB0
• C.SRB2
• D.SRB3

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