Tg‐minimised bandwidth‐allocated scheme for multi‐subsystem‐based VPON in metro‐access optical network. Issue 9 (1st June 2019)

• Record Type: Journal Article
• Authors: Qiao, Hubao; Gan, Chaoqin; Yan, Yuqi; Li, Xingfeng
• Is Part Of: IET communications. Volume 13:Issue 9(2019)
• Page Start: 1192
• Page End: 1199
• Publication Date: 2019-06-01
• Subjects: telecommunication traffic -- wavelength division multiplexing -- optical fibre networks -- passive optical networks -- bandwidth allocation -- wavelength assignment -- time division multiplexing -- OFDM modulation -- scheduling; Tg‐minimised bandwidth‐allocated scheme -- multisubsystem‐based VPON -- metro‐access optical network -- multiple subsystems -- WDM‐PON -- TDM‐PON -- OFDM‐PON -- subcarrier allocation algorithm -- network bandwidth resources -- bandwidth allocation -- dynamic‐wavelength allocation mechanism -- 3% bandwidth utilisation improvement; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2018.5633
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : Here, Tg ‐minimised bandwidth‐allocated scheme is proposed for VPON supporting joint scheduling of multiple subsystems in metro‐access optical network. To minimise guard time (Tg ) in WDM‐PON and TDM‐PON, the Tg ‐transferred mechanism is introduced. To reduce the number of Tg in OFDM‐PON, the subcarrier allocation algorithm based on the minimum number of Tg is proposed. To effectively utilise the network bandwidth resources, the bandwidth allocation based on matrix model is established. To increase the utilisation of wavelength, a dynamic‐wavelength allocation mechanism is proposed. Finally, by the simulation, the effectiveness of Tg ‐minimised bandwidth‐allocated scheme is demonstrated. Compared with other schemes, this scheme has at least 3% bandwidth utilisation improvement and lower average delay.