Pipelined architecture of dynamic bandwidth allocation for energy efficiency in XG-PON

Abstract

This paper proposes a pipelined architecture for a dynamic bandwidth allocation (DBA) in 10-gigabit-capable passive optical networks (XG-PONs). In the proposed architecture, the DBA operation is performed in multiple stages for high energy efficiency. Also, the proposed architecture forwards requests to next stages to obtain high performance. Using simulations, we evaluate performance of the proposed architecture.

Dynamic Band Allocation Method of XGS-PON System Using Time Sliding Window Traffic Prediction

“…The maximum user input bandwidth of each ONU is RU = 1 Gbps. In addition, the distance between OLT and ONU is 20 km [3] For comparison with other methods, first, the IATE performance is compared with that of the immediate allocation with colorless grant (IACG) method in [3]. At this time, the colorless grant part that does not conform to the XGS-PON standard in the IACG is not used.…”

“…The input traffic used in the simulation uses the self-similar traffic of [3]. Each ONU receives packets from an on-off traffic generation process that follows the Pareto distribution.…”

“…Although many studies on DBA methods have been conducted [3][4][5][6][7][8], most of them decided the transmission time based on the request transmitted from ONUs. In [3], a pipelined DBA method was introduced to reduce power consumption.…”

“…Although many studies on DBA methods have been conducted [3][4][5][6][7][8], most of them decided the transmission time based on the request transmitted from ONUs. In [3], a pipelined DBA method was introduced to reduce power consumption. The DBA method of the time and wavelength division multiplexing (TWDM) PON system using multiple optical wavelengths for packet transmission was introduced in [4].…”

Dynamic Bandwidth Allocation Algorithm for XG-PON with Traffic Monitoring and Intra-Scheduling

“…The OLT has to allocate upstream bandwidth not only for data packets but also for the DBRu field for an ONU. Also the OLT has to manage the report status of all ONUs for the DBA operation [3]- [6]. The TM method is relatively simple because the OLT does not need to manage the report status.…”