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2007MI039

2.3

11,.

,n0.

64kbpsn364kbps,.

:100Mbps

n1TCP, UDP

,.

,

n4

n44

n23

n48

n2

TCP:20
UDP:5UDP.

n24

n49

n43

n53

TCP

UDP

1Mbps,3Mbps

TCP

UDP

2

1.

PID
PID

2.1

(TCP:20,UDP:5),

1.

f (t) − f (0) = Cp (b(t) − b0 )

Z
db(t)
+ Ci (b(t0 ) − b0 )dt0 + Cd(1)dt,

TCP
10. UDP[4]120,
10 -60
11Mbps, 3Mbps
a.
,

UDPa, b,3,Cd :Cp :Ci :f(t):tb(t):t(1),f(0):PID(4). P,Ijitter =,D,.

200ppm(12.8Hz)
.
,.
.

5

3.1

3

fmax − fmin
× 106f

(4)

PID,.

2.2

[5](2), (3)

.

(2)
,N

(3)

.

HSn = ((N − 1) × HSn −1 + Hn )/N(2)U n = A × H Sn

(3)

Un :

Ü?Ý1 ö 781 ãä: º ãä 
9
Hn :

A:

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f=64000[Hz],0,1[ms],.
2,0[Byte], 90.

30[Byte],

90

4,,.

,,Un,.

,,Un,5,, PID,4096
.
,PID

PID,.

1[ms],

4260

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n 9 ö Ä×À X  µ\%d XÄ / ¤.

.

.

A

120

1.

3,11.

3.

1 PID

Cp:
11000
10000
9000
8000
7000

1  12
1  3
1  4
1  5

Ci:

50
70
90
110
130

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K _ K NºÊOQd PSRUY`T bSQ~m p HSd¸OQPvRUT`VÌS
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{}ÁÊ|Ä ~ => Ðpzpl OØ PLRÊpTVe W×Y?\[Ê¸]»Òg^n¨eBS©d 1  u ö v j sxsyBy V Ì
M 5,,

A=2,.

A=512
A=2,.

4,

PID,

PID,.

.

 3 PID  ÉÄ3Å (  +* , , .-/10-321 , 456%7 )3.2"!#$&%' ()+* ,-.

,,[1],.

,“,” 2009,2010.

[2],,“,” 2010,k ° ° , [ k , Ð ,  ° , k , “Adaptive Clock Recovery Method
UtilizingProportional-Integral-Derivative(PID)x
Control for CircuitEmulation,” , x s , CS2005-43(2005-11).
 , ;} , “TDM over Ethernet 1
[4] 
 11 sss
x  x s
2011.

[3]

 4 ºÉ»1¼ ½¾ÀÁ¼1ÂÃKÄ3Å (8 9 A=64)ÈñmÌ±òBÍºÙ¤ Ä  nZÇ­ Î  ²BñBó ò??²\ºÊñ?Þ9òn QîºXß}Ð Ä à`dô|Ñõ\ÒUöUÄÄ ÓFÔ  &² [3],64000[Hz],63,986.423518[Hz].
4[byte],j BÚ??Sg ?ö

CS2006-1(2006-4).

,”

f vi}jf ¸iBj j ¸n Ú v,,