E-OTN Solution

An end-to-end optical transport network with ultra-broadband, elasticity and ecosystem

New Service Development Boosts Network Innovation

Over the recent years, big video services including 8K and VR/AR are widely used; 5G wireless networks have been growing vigorously; enterprise private line networks are becoming broadband-based, popularized and diversified, and DC construction is accelerating. The development of new services poses bigger challenges to the existing transport network and boosts network revolution. Transport networks are required to provide mass bandwidth, ultra-low latency, multi-service transport capability and high security and reliability. Besides, they should support SDN technology to meet future network development requirements. Devices with low power consumption and simplified OAM can substantially cut OPEX, which draw much attention from operators.

Based on the above background, ZTE proposes the future-oriented E-OTN solution, fully meeting operator's requirements and solving tough problems in existing network deployment. It lays the foundation for unified transport of multi-service.

Future-Oriented ZTE E-OTN Solution

“End-to-end deployment”, “Elastic network” and “Enhanced OTN” are not only the essence of ZTE “E-OTN” solution but also basic features and the development trend.
- ● End-to-end: E-OTN equipment is used to implement end-to-end service provisioning, end-to-end unified planning and management, multi-layer protection and clock synchronization
- ● Elastic: E-OTN equipment supports unified cross-connection of ODUk/PKT/VC and adds elastic processing on rigid pipes to implement multi-service unified transport. Besides, SDN technology makes E-OTN network architecture more elastic and network deployment more flexible
- ● Enhanced: Many technological innovations highly improve the performance of E-OTN equipment in terms of system capacity, transport capability, optical cross-connect technology, OAM, and energy saving
Figure 1 Future-Oriented ZTE E-OTN Network Architecture

ZTE provides full series of E-OTN products to meet end-to-end deployment requirements in the entire network. ZTE can provide devices matching all networks from the edge access layer to the core backbone layer.

Figure 2 ZTE E-OTN Product Family

Long-haul backbone layer E-OTN solution

Transport capability is the core competence at the long-haul backbone layer. Beyond-100G OTN is an inevitable choice to support new service development. The ZXONE 9700 product employs a number of innovative technologies to significantly improve the transport capability of beyond-100G OTN.
- ● New-generation high-gain SD-FEC improves transport OSNR
- ● Distinctive multi-dimensional shaping technology enables flexible adjustment of spectral efficiency and lengthens transmission distance
- ● Patent optical equalization technology improves the pass-through capability of ROADM and reduces transmission costs
With the use of the above new technologies, ZTE 200G has the transport capability equal to 100G and can be deployed in the existing network quickly.

Core & aggregation layer E-OTN solution
The core and aggregation layer has huge bandwidth demand and the network is mainly MESH or multi-ring network. The ZXONE 9700 supports large-capacity optical/electrical hybrid cross-connection and can provide sufficient bandwidth resource and flexible service scheduling.
- ● The single subrack cross-connect capacity can be up to 64T, ranking No.1 in the industry
- ● It supports 100G, 200G and 400G transmission rates and can upgrade to 600G and even 1T in the future
- ● The 32-degree ROADM system supports colorless, directionless, contentionless and Flex Grid solutions, and can implement flexible optical layer rearchitecting. At the same time, the OXC technology based on optical backplane and optical label is the future development trend
Edge access layer E-OTN solution

The access layer features rapidly growing bandwidth and diversified service types. The equipment deployment is limited by space and power consumption. The ZXMP M721 has small size, large capacity and low power consumption, and is easy to deploy, so it is the best choice for the access layer.
- ● It supports 2M to 100G full rate service access and implements unified transport of multiple services
- ● It supports ODUk/PKT/VC hybrid cross-connection
- ● The single subrack cross-connect capacity can be up to 1T; the single slot backplane bandwidth can be up to 100G; the single-slot 100G card has the highest level of integration
Focusing on Network Requirements and Customer Benefits

Industry-leading beyond-100G technology improves system capacity and simplifies network deployment

The beyond-100G technology can increase the transmission capacity of a single fiber by several times, slow down channel resource consumption, lengthen equipment online time, protection customer investment, reduce unit power consumption and cut OPEX.
ZTE beyond-100G has the best transport capability in the industry. It supports smooth upgrade from the existing network without adjusting site and cable setting. It can also reduce the number of trunk sites to implement beyond-100G deployment on the existing network.

Automated OXC technology enables fast service scheduling and reduces OAM pressure

Optical backplane technology can avoid complicated physical fiber connections in the ROADM and implement automatic OXC connection in different directions, substantially reducing the workload of OAM personnel, shortening early-stage commissioning time and facilitating subsequent maintenance.
Optical label technology performs real-time tracing of optical wavelength information. Together with NM view and SDN functions, it can implement end-to-end service maintenance and prevent the risk of wavelength conflicts in a complicated optical network.

Encrypted transmission technology guarantees service security

Accessed services can be encrypted to meet customers' requirements for reliability and privacy. The service encryption does not affect service rate, transparent service clock transmission or service OTN monitoring.

Integrated management and control platform provides intelligent services during the whole life cycle and improves work efficiency

Based on SDN network architecture, the integrated management and control platform helps operators perform prior service planning, early-stage service provisioning, mid-stage maintenance and adjustment and late-stage evaluation and optimization, greatly improving work efficiency.

Eco-friendly and energy-saving equipment cuts OPEX

ZTE launches the industry's first large-scale OTN cross-connect device supporting heat dissipation by cold and heat isolation. It is applicable to IDC equipment rooms and can improve the heat dissipation efficiency by 50%. Optical modules based on silicon + optical technology and self-developed chips are used to reduce the power consumption of 100G and beyond-100G modules by 70%. The substantial reduction of power consumption relieves the pressure on electric systems in the equipment room and cuts customer OPEX.

Why ZTE?

With advantages in technologies and solutions, ZTE E-OTN products have been widely used in the world and have made breakthroughs in more than 100 countries. ZTE has achieved over 400 100G/beyond-100G network application cases and the total length of network construction has exceeded 400,000 km.

In the ON product evaluation report released by GlobalData, the ZXONE 9700 is rated “leader” in both the Metro and Core product categories, which makes ZTE become the only equipment provider that gets this honor. The ZXMP M721 ranks No.1 in the evaluation of the Access product category and is rated “very strong”.
ZTE is willing to cooperate closely with global operators and Internet companies to build future-oriented E-OTN networks.