A Modified Hybrid Online & Offline SPD First  (HSPD) Scheduling for EPONs

doi:10.13190/jbupt.201105.101.shuaiqj

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (5): 101-104.doi: 10.13190/jbupt.201105.101.shuaiqj

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A Modified Hybrid Online & Offline SPD First  (HSPD) Scheduling for EPONs

Received:2010-09-19 Revised:2011-06-01 Online:2011-10-28 Published:2011-08-26
Contact: Qian-Jun SHUAI E-mail:sqj@cuc.edu.cn

Abstract

Abstract:

In order to shorten the idle time in offline scheduling, a modified hybrid online & offline with Shortest propogation delay first based (HSPD) scheduling is proposed. Due to the round trip time (RTT) influence on the upstream idle time, a scheduling condition parameter is defined to further classify online and offline status based on the diversity of the propogation delay. The network performance is evaluated through analysis and simulation. Results indicate that HSPD scheduling achieves better performance compared with the MDBA1 algorithm and SPD first based offline scheduling especially under light or medium loaded traffic.

Key words: Ethernet passive optical networks, dynamic bandwidth allocation, scheduling, shortest propogation delay first

CLC Number:

TN915.6

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A Modified Hybrid Online & Offline SPD First  (HSPD) Scheduling for EPONs

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