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
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.