單項(xiàng)選擇題A particular cell is expected to support 6 Erlangs of traffic at 1% Grade of Service. How many traffic channels are required?（）
A. 6
B. 13
C. 3
D. 15
E. 22
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1.單項(xiàng)選擇題Which logical channel must be dimensioned for each cell when considering the call set-up frequency? （）
A.SACCH
B.SDCCH
C.FCCH
D.SCH
E.BCCH
2.單項(xiàng)選擇題Which type of interference is produced by other transmitters on the same frequency? （）
A. Double interference
B. Co-channel interference
C. Adjacent channel interference
D. Reflected interference
E. Timing interference
