Staged priority-based dynamic bandwidth allocation in software-defined hybrid passive optical network

Chen Qian; Yifan Li; Qianwu Zhang; Bingyao Cao; Zhengxuan Li; Min Wang

doi:10.1117/1.OE.57.12.126101

10 December 2018 Staged priority-based dynamic bandwidth allocation in software-defined hybrid passive optical network

Chen Qian, Yifan Li, Qianwu Zhang, Bingyao Cao, Zhengxuan Li, Min Wang

Author Affiliations +

Optical Engineering, Vol. 57, Issue 12, 126101 (December 2018). https://doi.org/10.1117/1.OE.57.12.126101

Abstract

A software-defined hybrid passive optical network (HPON) architecture is proposed, in which multiple PON systems using various physical layer (PHY) multiplexing technologies can coexist. The detailed upstream bandwidth allocation procedure is illustrated, and the dynamic bandwidth allocation mechanism in software-defined HPON is primarily investigated. By introducing the concept of virtual PON (VPON), an elaborate staged priority-based dynamic bandwidth allocation (SPB-DBA) mechanism for inter-VPON is proposed, which consists of a delicate two-stage admission scheme of bandwidth allocation to avoid frequent bandwidth reallocation, and an exquisite weighted bandwidth allocation algorithm to allocate bandwidth for VPONs with priority level and bandwidth demand priority differentiation. The simulation results demonstrate that the SPB-DBA mechanism provides distinctive bandwidth support for VPONs with differentiated priority levels and ensures the access fairness among VPONs. Furthermore, the performances in terms of bandwidth utilization, average satisfaction ratio, and packet average delay are significantly improved.

Citation Download Citation

Chen Qian, Yifan Li, Qianwu Zhang, Bingyao Cao, Zhengxuan Li, and Min Wang "Staged priority-based dynamic bandwidth allocation in software-defined hybrid passive optical network," Optical Engineering 57(12), 126101 (10 December 2018). https://doi.org/10.1117/1.OE.57.12.126101

Received: 10 August 2018; Accepted: 19 November 2018; Published: 10 December 2018

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