an intro to gsm
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D(3),(22) (4) (5) (6) (7)
(8) (9) (10) (11) (12) (14)
(15) (16) (18) (19) (20)
(23) (26) (27) (28)
(30) (31) (32) (33) (35)
(36) (37) (39) (40) (41) (42)
(43) (44) (45) (46) (47)
(48) (49)
(29)
(21)
(2)
R
(1)
(3)
(22)
(38)
(34)
(13)
(17)
(24) (25)
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call blockedS(1) is full ?
S(1) is full ?S(2) is full ?
S(2) is full ?
N(2) is full?
N(2) is full?
assign a CH from N(1)
assign a CH from S(2)
inner-cell _(2)using S(2) CH?
inner-cell _(2)using S(2) CH?
call blocked
inner-cell_(2) gets a CH
from N(2) and gives upa CH of S(2)
inner-cell_(2) gets a CHfrom N(2) and gives up
a CH of S(2)
inner-cell_(1) gets theS(2) CH and gives up
a CH of N(1)
assign the N(1) CH
inner-cell_(1) gets a CHfrom S(2) and gives up
a CH of N(1)
assign the N(1) CH
call blocked
call blocked
no
call initiationin Cell_(1)
assign a CH from S(1)
yes
no
yes
no
no
no
yes
no
yes
no
yes
no
yes no
N(1) is full?
yes
inner-celluser?
yes
yes
inner-cell _(1)using N(1) CH?
no
yes
assign the S(2) CH
inner-cell_(1) gets a CHfrom S(1) and gives up
a CH of N(1)
assign the N(1) CHno
yes
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1 1A = x + y 1 A = x + y2 2 2
x2
x1 y1 y2
1u u
2
C=N+S
N
S
v
C=N+S
N
S
v1 2
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20 22 24 26 28 30 32 34
103
102
101
100
CallBlockingProbabilities
Traffic Density A
FCA
X: HCA [5]
NCCS
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15 16 17 18 19 20 21 22 23 24
106
105
104
103
10
2
101
100
CallBlockingProbabilities
Traffic Density A
FCA
CBWL/CR [8]
NCCS
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20 21 22 23 24 25 26 27 28 29 30
108
107
106
105
104
103
102
101
100
CallBlockingProbabilit
y
Traffic Density A
: FCA
m=2
m=3
m=4
m=5
m=6
m=7
: NCCS
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