Transmission apparatus

39 Pages·2013·2.46 MB·English

US 200701 l6055Al
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2007/0116055 A1
Atsumi et al. (43) Pub. Date: May 24, 2007
(54) TRANSMISSION APPARATUS Publication Classi?cation
(76) Inventors: Toshiyuki Atsumi, Yokohama (JP); (51) Int. Cl.
Eita Miyasaka, Yokohama (JP) H04] 3/00 (2006.01)
(52) Us. or. .......................................... .. 370/476; 370/535
Correspondence Address:
ANTONELLI, TERRY, STOUT & KRAUS,
(57) ABSTRACT
LLP
1300 NORTH SEVENTEENTH STREET
A transmission apparatus is disclosed, Which performs posi
SUITE 1800
tive/negative stuf?ng With 8-bit/ 10-bit (8B/1OB) codes being
ARLINGTON, VA 22209-3873 (US)
kept intact While retaining the normality of 8B/ 10B codes
and the continuity of running disparity (RD) Without termi
(21) Appl' NO': 11/488’027 nation of 8B/1OB codes of a plurality of Gigabit Ethernet
(22) Filed: JUL 18 2006 (GbE) signals received. The apparatus then executes multi
’ plexing and separation after synchronization of the plurality
(30) Foreign Application priority Data of signals, thereby achieving the “transparent” transport of
management information Which is contained in the 8B1OB
Oct. 14, 2005 (JP) .................................... .. 2005-299555 Codes between user devices.
IF END
25309?
5 GbE ROUTER B 5 E
5 MPX 2 ‘ ' :
5: : RGobuET ER D Ii 5
E E1T0H0EMR“ “““5 “
IP i a i
PACKEI : T
FMRAACME 'i; 1g T T':‘ : :
MANCHESTER 5 85105 i MANCHESTER
CODE 4B5B : CODE i :CODE 455B
CODE CODE, ETC. CODE, ETC.1
_ _ ‘ , O—.
E 1 : l I I i 1 E
5 ETHER i i GbE i i 5 ETHER
8B1:oé i - GENERATE/
‘ 1 END POINT
DECODINQM AC MAC
FRAME FRAME
12>
: IP PACKET
I 100M-ETHER MAC FRAME GENERATED AT IP END DEVICE 1
‘ : GBE MAC FRAME GENERATED AT ROUTER A
I 8B10B-CODED PART
I 100M-ETHER MAC FRAME GENERATED AT ROUTER B
Patent Application Publication May 24, 2007 Sheet 1 0f 23 US 2007/0116055 A1
FIG. 1
BEFORE CONvERsION (8-bit) AFI'ER CONVERSlON(10-bit)
Current RD — Current RD +
GCFiDODUEP 8-HT DATA abcd ei fgh I abcd ei fgh I
00.0 00 000 00000 100111 0100 0110001011
01.0 01 000 00001 011101 0100 1000101011
02.0 02 000 00010 101101 0100 0100101011
03.0 03 000 00011 110001 1011 110001 0100
04.0 04 000 00100 110101 0100 0010101011
050 05 000 00101 101001 1011 101001 0100
D6.0 0a 000 00110 011001 1011 011001 0100
07.0 07 00000111 1110001011 0001110100
D8.0 08 000 01000 111001 0100 0001101011
09.0 09 000 01001 100101 1011 100101 0100
010.0 CA 000 01010 010101 1011 010101 0100
FIG. 2
CODE ORDERED SET GRgggENu CODE
/C1/ CONFIGURATION 1 4 /K28.5/D21.5/Con?g_Reg(*1)
/C2/ CONFIGURATION 2 4 /K28.5/D2.2/COn?g_Reg(*1)
/I1/ IDLE 1 2 /K28.5/D5.6/
/I2/ IDLE 2 2 /K28.5/D16.2/
/R/ CARRIER ExPANsION 1 /K23.7/
/s/ PACKET HEAD 1 /K27.7/
/T/ PACKET FINISHED 1 /K29.7/
/v/ ERROR TRANSFER 1 /K30.7/
(*1 )CONFIG_REG CONSISTS OF 2 CODES(16-bit)OF/DA.B/DC.D/.

Patent Application Publication May 24, 2007 Sheet 4 0f 23 US 2007/0116055 A1
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Patent Application Publication May 24, 2007 Sheet 5 0f 23 US 2007/0116055 A1
FIG. 6
ETHERNET ( MAC ) 64~1518
SIGNAL FRAM E bytes
/ i
ADD HEADER & ‘I
PER MAC FRAM v \l \ \ \ . I \I 1 l u I
II 11I1l1'!ItlI1 l 1 ! I IAI 111I!I!||'I ! I' I I1 I II
INSERTA FIXED VALUE
BETWEEN FRAMES
MAPPING INTO
OC-48 PAYLOAD
16640 byte
OC-48 PAYLOAD
ADD OC-48
OVERHEAD
<— 144 byte —>1<-16 byte->¥*—— 4160 byte
23 » OC-48 SOH
25 » POINTER opcg?a 00-48 PAYLOAD
OC-48 LOH
I l I
3 ) i
24 22 21
SONET SIGNAL
Patent Application Publication May 24, 2007 Sheet 6 0f 23 US 2007/0116055 A1
IF END IP END
QEY'QEJ 9?.‘4'95?
:' "- RouTERA ROUTERB :' "
_::II~_- GbE -d ' _||
iT-a" l - “Fin =
g I 100M E 5 100M ; I
\I _P_ ______ ETf HERl i; ‘ ;5 f ET‘ HER \ _____i_ __
PACKET: 5 5 i 5 g T
FWDMA NCHESTE4 R ii fi ii 4»i M4 ANCHESTER
CDDE 485B 5 5 85108 g : ;CoDE 485B
CCDE, ETC. ; : CoDE : 5 ;CODE, ETC.
CODE 9——9 : 9 9 : 9—9
; 100M 5 5 - 'i i 100M 5
g ETHER; L GbE n; ; ETHER as
= i i E i - GENERATE/
i E 8B10B- 8B10B- ENDPOINT
i 5 CODING DECODING 5
MAC MAC MAC MAC
FRAME FRAME FRAME FRAME
‘11> 51>
E1 : lP PACKET
E : 10oM-ETHER MAC FRAME GENERATED AT IP END DEVICE 1
m : GBE MAC FRAME GENERATED AT RouTERA
- : 8B1OB-CODED PART
- : 10oM-ETHER MAC FRAME GENERATED AT ROUTER B
Patent Application Publication May 24, 2007 Sheet 7 0f 23 US 2007/0116055 A1
(PRIOR ART)
lP END
REYJQE
; MPX1 MPX2 I
GbE i
: i : i ; ROUTERD ; 5
i I i I i 100M ''''''' “
,P i i I i I I I 5 I EETHER I
PA<>KETI¢ i i i 5 I 1 i I
MAC 5 i - i ' I I i i i
FRAMMAEN~CH—E*STIEI R ?Q I1 II IE :I Ii 1I ?f MANCHESTER
CODE 4B5B : 8B10;B I : 8510B : CODE 4B5B:
CODE, ETC. 5 CODE 5 I CODE 5 CODE, ETC.E
CoDE ¢—o,I 5 ‘d - I ,__,I i ,__l _..,I
I I : :Vi i \J I : : I
5 88108 CODE IS .—,'' 8B10B CODE IS 5
I EXCHANGED I E EXCHANGED '
BEATNWDE EGbNE -R OMUPTXE1R A :SSODNHE T/ BEATNWDE EGbNE R- OMUPTXE 2R B :
I ENDPOINT
8B10B- 8B10B- 8B10B- 8B10B- I
CoDING DECODING CODING DECODING ;.
MAC
FRAME IP
lP
MAC STORE IN TAKE- MAC
PACKET ENDING SONET/SDH OUT ENDING
FRAME
5555555 I lP PACKET
:I I 1OOM-ETHER MAC FRAME HEADER GENERATED AT lP END DEVICE 1
m I GBE MAC FRAME HEADER GENERATED AT ROUTER A
- I 8B1OB-CODED PART
- I SONET/SDH FRAME HEADER
- I 1OOM-ETHER MAC FRAME HEADER GENERATED AT ROUTER B
Patent Application Publication May 24, 2007 Sheet 8 0f 23 US 2007/0116055 A1
IPEND
REYJQE
GbE ROUTERB 5 ':
MPX2 ' :
RGObUET ERD EE 5
i I 100M" """ "
5 5 5 , - I ETHER 5
IP L E i 5 i i : E E i
PACKET? a a a i i a a a T
‘MAC 5 i ii i 5 5 i i
FRAME 5 5 ' E 5 T 5 ;
MANCHESTER ‘ 5 ' 8810B : 5 5MANCHESTEB
CODE 485B 3 : i CODE 5 : : .CODE 4B5B.
CODE CODE, ETC. 5 5 5 5 5 5 CODE, ETC:
5100M 5 5T 5 i T55100M 5
5 ETHER ‘5 5‘5 5 GbE 5 5 ‘5 5 ETHER I
i i i I _ i 5 5 QGENERATE/
' 5 8B10B- 8B10B- : END PolNT
5 5 CODING DECODING 5
5 MAC MAC MAC MAC
FRAME FRAME FRAME FRAME ‘P
::> :>
MAC
ENDING
1 IP PACKET
I 100M-ETHER MAC FRAME GENERATED AT IP END DEVICE 1
I GBE MAC FRAME GENERATED AT ROUTER A
I 8B10B-CODED PART
I 100M-ETHER MAC FRAME GENERATED AT ROUTER B
Patent Application Publication May 24, 2007 Sheet 9 0f 23 US 2007/0116055 A1