單項(xiàng)選擇題A subscriber makes a two-minute call and a four-minute call during the busy hour. How much traffic does he generate for that hour? （）

A.33 millierlangs
B.66 millierlangs
C.100 millierlangs
D.10 millierlangs
E.25millierlangs


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1.單項(xiàng)選擇題Reusing frequencies in a cellular pattern (compared to “one big cell”)（）

A. Increases channel utilization, cost ,and interference.
B. Increases capacity and cost, but decreases interference.
C. Increases capacity, but decreases cost and interference.
D. Increases capacity, cost, and interference.

2.單項(xiàng)選擇題Which cell pattern is recommended to use when using frequency hopping? （）

A.4/12
B.3/9
C.7/21
D.7/7

3.單項(xiàng)選擇題Which of these is not a prediction model for radio coverage? （）

A.Algorithm-9999
B.Cost-231
C.Okumura-Hata
D.Printhana
E.Walfish-Ikegami

4.單項(xiàng)選擇題Which of these assumptions is necessary to use in system balance? （）

A.The sensitivity is the same for the MS and the BTS.
B. The path loss is the same for the MS and the BTS.
C. The feeder loss is the same for the MS and the BTS.
D. The antenna gain is the same for the MS and the BTS.
E. The combiner loss is the same for the MS and the BTS.

5.單項(xiàng)選擇題What is system balance? （）

A. Each cell can handle the same amount of subscribers
B. The network is dimensioned for all mobile classes
C. All cells are of the same size
D. All BTSs use the same output power
E. Uplink and downlink coverage is the same