PRNN/ERLS-based predictive QoS-promoted DBA scheme for upstream transmission in EPON |
| |
Authors: | Jan-Wen Peng Chung-Ju Chang Po-Lung Tien |
| |
Affiliation: | 1.Chunghwa Telecom Laboratories,Taipei,Taiwan, ROC;2.National Chiao Tung University,Hsinchu,Taiwan, ROC |
| |
Abstract: | This article proposes a PRNN/ERLS-based predictive QoS-promoted dynamic bandwidth allocation (PQ-DBA) scheme for upstream
transmission in Ethernet passive optical network (EPON) systems. The proposed PQ-DBA scheme originally divides incoming packets
of voice, video, data service traffic into six priorities, where packets having less room before QoS requirements violation
or being in starvation situation will be dynamically promoted to high priority cycle-by-cycle. It predicts packets arriving
at prediction interval for ONUs using pipeline recurrent neural network (PRNN)/extended recursive least squares (ERLS) so
that the bandwidth allocation can be more up-to-date and then accurate. Simulation results show that the proposed PQ-DBA scheme
achieves higher system utilization and lower average voice, video, data packet delay time than the DBAM scheme Luo and Ansari,
OSA J Opt Netw 4(9):561–572] by 4, and 21, 90, 43%, respectively, and the PQ-DBA scheme but without prediction by 2, and 26,
29, 34%, respectively. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|