Group protection and LAN service scheme utilizing flexible modularization and high efficiency for metro‐access network. (12th August 2018)

• Record Type: Journal Article
• Authors: Chen, Yuanyuan; Gan, Chaoqin; Li, Xingfeng; Hua, Jian
• Is Part Of: International journal of communication systems. Volume 31:Number 15(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-08-12
• Subjects: group protection -- high reliability -- LAN -- metro‐access network -- modularization; Telecommunication systems -- Periodicals; 621.382
• DOI: 10.1002/dac.3783
• Languages: English
• ISSNs: 1074-5351

Abstract

Summary: In this paper, a reliable scheme based on star topology is proposed by introducing group protection. Depending on interconnecting fibers, all optical network units (ONUs) are divided into some groups and each group contains 2 ONUs. Through these groups, the network can not only realize efficient transmission of local area network service between adjacent ONUs but also provide mutual protection for ONUs in a group when distribution fibers happen to faults. By using the backup pathway, the network can further provide protections for feeder fibers when they fall in faults. With the help of the optical tunable receiver in ONU, dynamic bandwidth allocation algorithm is also supported to realize flexible bandwidth allocation in 1 group. By the subtly design, the network can realize passivity (there are no active devices in remote nodes), modularization, and scalability. By utilizing amplitude modulation, differential phase shift keying modulation and reflective semiconductor optical amplifier technology, wavelength triple reuse is also achieved. Finally, the results of simulation and performance analysis demonstrate the feasibility of the architecture. Abstract : In this paper, by forming the optical network unit (ONU) pairs, the network can not only provide fiber protections for feeder and distribution fibers but also support local area network service transmission. By the subtly design, the network can also realize modularization and scalability. Moreover, with the help of the tunable receiver in ONU, the dynamic bandwidth allocation algorithm is designed to improve bandwidth utilization in 1 ONU pair. Furthermore, based on the group protection principle, the proposed scheme to support local area network service is cost‐efficient.