Research Article
A Novel Dynamic Bandwidth Allocation Mechanism for Star-Ring-Based EPON
Table 2
Definition of parameters.
| | Number of ONUs | 32 | | Number of wavelength | 1 | | Upstream/downstream link capacity | 1 Gbps | | OLT-ONU distance (uniform) | 10–20 km | | ONU-ONU distance (uniform) | 1 km | | Maximum cycle time | 1 ms | | Guard time | 5 s | | Control message length | 0.512 s | | Sub-OLT buffer Size | 10 MB, 20 MB | | ONU buffer Size | 10 MB | | DBA computation time | 15 s |
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