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Hybrid Resource Scheduling Algorithm with Traffic Differentiation in TWDM-PON
XIONG Yu, JIANG Jing, ZHANG Zhen-zhen, PENG Hai-ying, WANG Ru-yan
ACTA ELECTRONICA SINICA ›› 2017, Vol. 45 ›› Issue (6) : 1490-1497.
PDF(1909 KB)
PDF(1909 KB)
Hybrid Resource Scheduling Algorithm with Traffic Differentiation in TWDM-PON
The characteristics of long reach and wide coverage in time and wavelength division multiplexed passive optical network(TWDM-PON) increase the round trip time,resulting in the severe deterioration of the delay performance of high priority traffic.This paper proposes a hybrid resource scheduling algorithm with traffic differentiation to solve this issue.Firstly,the wavelengths of ONU(Optical Network Unit) groups are realtimely adjusted to achieve resource sharing in accordance with the network load,and traffic sub-cycles are dynamically divided for the purpose of differentiated traffic.Furthermore,we respectively exploit the online and offline scheduling to fill the wavelength voids and ensure the efficiency of resources scheduling.Finally,the simulation results show that the proposed algorithm can satisfy the delay requirements of different priority traffic,guarantee the quality of service and improve the channel utilization ratio.
TWDM-PON / hybrid resource scheduling / traffic differentiation / quality of service {{custom_keyword}} /
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