Title :
Multipath and optimal spectrum continuity based method for spectrum de-fragmentation in Pbit/s optical switching node of flexible bandwidth optical networks
Author :
Nengxian Li ; Lijia Zhang ; Bo Liu ; Qi Zhang ; Yongjun Wang ; Qinghua Tian ; Xiaoli Yin ; Xiangjun Xin
Author_Institution :
Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun. (BUPT), Beijing, China
Abstract :
This paper proposes a novel Routing and Spectrum Assignment (RSA) method in Pbit/s optical switching node: Multipath and Optimal Spectrum Continuity based (MOSC) method for de-fragmentation. This method mitigates spectrum fragmentation occurs in Pbit/s optical switching node of flexible bandwidth optical networks due to dynamic allocation of spectrum resources for new connections. Simulation results show that the novel strategy achieves a better spectral efficiency and a smaller blocking probability with high adaptability to the traffic rate variation.
Keywords :
bandwidth allocation; optical fibre networks; optical fibre subscriber loops; optical switches; probability; telecommunication network routing; telecommunication traffic; MOSC based method; Pbit/s optical switching node; RSA method; blocking probability; dynamic allocation; flexible bandwidth optical networks; multipath and optimal spectrum continuity; routing and spectrum assignment method; spectral efficiency; spectrum de-fragmentation method; traffic rate variation; Bandwidth; Heuristic algorithms; OFDM; Optical fiber networks; Optical switches; Resource management; Routing; Pbit/s switching node; RSA; Spectrum fragmentation;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2014 13th International Conference on
Conference_Location :
Suzhou
DOI :
10.1109/ICOCN.2014.6987148
