单项选择题
A. Space for antennas B. Frequency allocation C. Electrical power availability D. Permission/Contract with owner E. Availability of PCM link to the BSC
A subscriber makes a two-minute call and a four-minute ...
单项选择题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
Reusing frequencies in a cellular pattern (compared to ...
单项选择题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.
Which cell pattern is recommended to use when using fre...
单项选择题Which cell pattern is recommended to use when using frequency hopping? （）
A.4/12 B.3/9 C.7/21 D.7/7
