关键词: 吉比特无源光网络, 动态带宽分配算法, 自相似业务, 排队论

Abstract:

A new S/G/m/FCFS queuing model for GPON system is proposed to analyze the access delay for dynamic bandwidth allocation algorithms. An evaluation for both Static Estimation Bandwidth allocation (SEBA) and Dynamic Estimation Bandwidth allocation (DEBA) are carried out based on the proposed queuing model. To save bandwidth resource and improve network performance, the estimation factor of DEBA can be adjusted dynamically according to the traffic load. Simulations verify that DEBA is superior to SEBA for obtaining lower access delay and mitigating congestion effectively.

Key words: gigabit passive optical network, dynamic bandwidth allocation, selfsimilar traffic, queuing theory