Innovation and demonstration of optical service unit-based metro-optimized OTN technologies

Ruiquan Jing; Chengliang Zhang; Heng Zhou; Junjie Li; Wu Qiuyou; Yuanbin Zhang; Yaqin Wang; Wei Su; Yadong Gong; Xiaoli Huo

doi:10.1364/JOCN.447326

Journal of Optical Communications and Networking
Vol. 14,
Issue 4,
pp. 236-247
(2022)
•https://doi.org/10.1364/JOCN.447326

Innovation and demonstration of optical service unit-based metro-optimized OTN technologies

Ruiquan Jing, Chengliang Zhang, Heng Zhou, Junjie Li, Wu Qiuyou, Yuanbin Zhang, Yaqin Wang, Wei Su, Yadong Gong, and Xiaoli Huo

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Ruiquan Jing, Chengliang Zhang, Heng Zhou, Junjie Li, Wu Qiuyou, Yuanbin Zhang, Yaqin Wang, Wei Su, Yadong Gong, and Xiaoli Huo, "Innovation and demonstration of optical service unit-based metro-optimized OTN technologies," J. Opt. Commun. Netw. 14, 236-247 (2022)

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Abstract

To efficiently support the transport of sub-1-Gbps services, an optical service unit (OSU)-based metro-optimized optical transport network (M-OTN) technology framework is proposed and described. The proposed M-OTN/OSU technologies have been implemented by major OTN equipment vendors and verified in a network operator’s lab for the first time to our knowledge. Moreover, a multivendor interoperability test has been conducted in a real-time field trial. The experimental results show that M-OTN/OSU has clear advantages over existing SDH VC/packet-enhanced OTN technologies in several key aspects, e.g., low latency, massive connections, and agile hitless bandwidth adjustment. M-OTN/OSU will be valuable for network operators providing high-quality leased line services and video/VR services in modern OTNs with unprecedented scalability and performance.

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Value of 3 Bits	Definition
000	OSU(PKT) data frame
001	OSU(PRBS) test frame
010	OSU(CBR) data frame
011	OSU(VC-n) data frame
100	OSU(PKT) keep alive frame
101	OSU client fault frame
110	OSU maintenance status frame
111	OSU OAM frame

Client Type	C Value	$R_{O S U}$ (kbits/s)	$R_{O S U_P L D}$ (kbits/s)
STM-1	63	163,800	157,828.125
STM-4	249	647,400	623,796.875
SBCON/ESCON	80	208,000	200,416.667
DVB-ASI	108	280,800	270,562.500

PKT Client Type	C Value	$R_{O S U - m a x}$ (kbits/s)	$R_{O S U_P L D - m a x}$ (kbits/s)
10M (PKT)	4	10,400	10,020.833
100M (PKT)	40	104,000	100,208.333
1G (PKT)	400	1,040,000	1,002,083.333
10G (PKT)	3996	10,381,800	10,003,296.875

66b Block Pattern	Control Bit (F) of 257b Block	Second to Fifth Control Bits of 257b Block ( $C_{2 t o 5}$ )	Re-encoded Bits ( $C_{2 t o 5}^{'}$ )
DDDD	1	—	—
IIII	0	0000	0100
TIII	0	0000	0100
TISD(N/A)	0	0001	0001
TSDD	0	0011	0010
SDDD	0	0111	0111
DTII	0	1000	1000
DTSD	0	1001	1011
DDTS	0	1100	1101
DDTI	0	1100	1101
DDDT	0	1110	1110

CBR Service Type	OSU Bit Rates (kbits/s)	Cn_min	Cn_max
STM-1	163 800	182	183
STM-4	647 400	184	185
SBCON/ESCON	208 000	184	185
DVB-ASI	280 800	184	185

OPU Types	OPU Payload Bit Rate (Kbps)	P-Value	Actual PB Bit Rate (Mbps)
OPU0	1,238,954.310	476	2.602845189
OPU1	2,488,320.000	956	2.602845188
OPU2	9,995,276.962	3840	2.602936709
OPU3	40,150,519.322	15,426	2.602782272
OPU4	104,355,975.330	40,096	2.602653016

Service Speed	EoSoO (ETH->VC-n->STM-16->odu1->odu2)	EoOSU (ETH->OSU->odu0->odu2)
10 Mbps	$5 \times V C 12$	$R_{O S U} = 4 \times R_{P B}$
60 Mbps	$2 \times V C 3$	$R_{O S U} = 24 \times R_{P B}$
150 Mbps	$1 \times V C 4$	$R_{O S U} = 60 \times R_{P B}$

Service Speed	EoO (ETH->odu0->odu2)	EoOSU (ETH->OSU->odu2)
100 Mbps	$E T H C I R = P I R = 100 M$	$R_{O S U} = 40 \times R_{P B}$
500 Mbps	$E T H C I R = P I R = 500 M$	$R_{O S U} = 200 \times R_{P B}$
1GE	$E T H C I R = P I R = 1 G$	$R_{O S U} = 400 \times R_{P B}$
5 Gbps	$E T H C I R = P I R = 5 G$	$R_{O S U} = 1998 \times R_{P B}$
10GE	$E T H C I R = P I R = 10 G$	$R_{O S U} = 3996 \times R_{P B}$

	EoOSU		EoSoO
Frame Size (B)	128	1024	128	1024
RTD for 10M	196.5 µs	669 µs	2419.6 µs	3784 µs
RTD for 60M	247.5 µs	505 µs	1468.6 µs	1576 µs
RTD for 150M	219.9 µs	332 µs	994.5 µs	1106 µs

	FE1	FE2	FE3	GE1	GE2	10GE1	10GE2
64	150	36	46	67	27	64	25
128	154	41	51	68	28	63	25
256	163	53	63	71	30	64	25
512	178	75	85	75	35	65	27
1024	210	118	128	84	44	67	29
1280	226	146	156	88	49	68	30
1518	241	163	173	91	53	69	31

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Journal of Optical Communications and Networking