upstream " DOCSIS '

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?????? ????? ?-upstream ?"? ?????? DOCSIS .  
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downstream ??? ????? ?????? (CMTS) ??? ??????
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• ?? ????? CM ?????? ???????? ?"? ????.

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Unsolicited Grant Service(UGS) - ????? ?????
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Real-Time Polling Service(rtPS) - ????? ?????
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Unsolicited Grant Service with Activity
Detection(UGS/AD)- ????? ????? ?????? UGS ??
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9
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Non-Real-Time Polling Service(nrtPS)- ?????
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Best Effort Service(BE)- ????? ????? ???? ???
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(?????) , ???? I ???? ?????????
(???????). S ???? ??????? ??????? ?????????
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???? ???? I
I ???? ??? ?????? , S1 , J ?????.
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I ???? ?????? ?? ???? ??? ????? ???????.  
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???? ???? II
I ???? ??? ?????? ,S ????? , J ?????.
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????? ???? ?????? I 4 , S 1 , J
1 .
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I 4
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??????? ?jitter ?? ?????? ??????? ??? ????
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???? ?????? I 3 ,S1 , J 1
T 12
T 12
???? ???? I 4, S 1 ,J 2
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?????? ????? ???? ?????? T ???? ?????? ???????
????? ????? ?? ????????? ?? ??????.
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????????? ?????
T - ???? ????? ?????? ???????
While (true) If (new request) If
(SSi/Ii gt 1) cant accept the
request else
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T the minimal common multiple (Ii).
If(TgtTmax) cant accept the
request else Collision 0 For (j1
jltInew j) For (n1 nltT n nInew)
Collision Check if the slot is empty


(j,n,Snew,Inew,Jnew) If (Collision1)
break If (Collision0) accept the
request If(Collision1)
cant accept the request
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If(unconnected ) C If(CCmax) Reorgan
ize. C0.
???? ????? C ?????? ?? ???? ?????? ???????.???? C
???? ???? ????? ???? ????? ???? ?? ?????? ??????
?????? . ???? T ???? ???? ?????? ??????? ?????
????? ?? ?????? ?????? .
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