1 Selected Topics in Telecommunication Engineering I
504460
29 2558 .
Wireless Communication
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() (The cellular
concept and frequency planning )
: (Mobile radio propagation I: Large scale path loss )
: (Mobile radio propagation II: Multipath and small scale fading )
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() (Modulation
techniques for mobile communications)
(Channel coding for Wireless communications)
(Introduction to Wireless networking)
(Introduction to some wireless communications standards)
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5
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1. "2. "" 1 "" 2 "" 3 ""
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" "" 80 km
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" 100 "" "
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()
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R
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Hexagon geometry
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Hexagon geometry
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Hexagon geometry
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Hexagon geometry
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I
J
Hexagon geometry
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I J
Hexagon geometry
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1 32 16 336 N=7
) 1
) 1
)
)
) 336/7 = 48
) 48 x 32 = 1,536
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2 128 0.8 336 N=7
) 1
) 1
)
)
) 336/7 = 48
) 48 x 128 = 6,144
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1 2 1 2 4
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BSC= base station controller MSC = Mobile Switching Center VLR= Visitor Location Registor IMEI=International Mobile Equipment Identity EIR = Equipment Identity Register HLR= Home Location Register AuC= Authentication Center SIM= Subscriber Identity Mobile SMSC = Short message service center PSTN = Public Switched Telephone Network
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"
1.
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2.
MTSO
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3.
MTSO
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3.
MTSO paging BS BS paging
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4.
BS MTSO MTSO
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5.
BS MTSO
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6.
BS BS
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path loss model
path loss model wave propagation
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BSC= base station controller MSC = Mobile Switching Center VLR= Visitor Location Registor IMEI=International Mobile Equipment Identity EIR = Equipment Identity Register HLR= Home Location Register AuC= Authentication Center SIM= Subscriber Identity Mobile SMSC = Short message service center PSTN = Public Switched Telephone Network
Hand over Hand off
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1234
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6
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L
N nonblocking
L N blocking
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= x = 4.9
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C =
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