公开(公告)号：KR1020090076579A

公开(公告)日：2009-07-13

申请号：KR1020080002607

申请日：2008-01-09

Applicant: 성균관대학교산학협력단

Inventor： 이혜경 ,  정민영 ,  이태진 ,  추현승

IPC: H04B10/27 ,  H04B10/2581

CPC classification number: H04J14/0282 ,  H04J14/0227 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04L12/42 ,  H04Q11/0067 ,  H04Q2011/0064

Abstract: An upstream transmission band allocation method in a WDM(Wavelength Division Multiplexing)-based EPON(Ethernet Passive Optical Network) is provided to enable efficient band allocation by managing ONUs(Optical Network Units) by group, and to prevent unused channel sections from being generated. ONUs to be allocated to each of m wavelength channels are grouped(S1). So that the grouped ONUs use efficiently allocated wavelengths and time slots, dynamic band allocation algorithm is carried out to allocate each channel. The m wavelength channels are synchronized with one period. The one period is set based on a maximum permissible period. The m wavelength channels are synchronized with sub periods created by dividing the one period into m periods. The overall ONUs are grouped into m+1. The grouped ONUs start to transmit upstream frames at starting time of the synchronized period and sub periods.

Abstract translation: 提供了基于WDM（波分复用）​​的EPON（以太网无源光网络）中的上行传输频带分配方法，以通过按组管理ONU（光网络单元）来实现有效的频带分配，并且防止产生未使用的信道部分 。 分配给m个波长信道中的每一个的ONU被分组（S1）。 为了使分组的ONU使用有效分配的波长和时隙，执行动态频带分配算法来分配每个信道。 m个波长信道与一个周期同步。 一个时期是根据最大允许周期设定的。 m个波长信道与通过将一个周期分成m个周期而创建的子周期同步。 整个ONU分为m + 1。 组合的ONU在同步周期和子周期的开始时间开始发送上行帧。

公开(公告)号：KR100923289B1

公开(公告)日：2009-10-23

申请号：KR1020080002607

申请日：2008-01-09

Applicant: 성균관대학교산학협력단

Inventor： 이혜경 ,  정민영 ,  이태진 ,  추현승

IPC: H04B10/27 ,  H04B10/2581

CPC classification number: H04J14/0282 ,  H04J14/0227 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04L12/42 ,  H04Q11/0067 ,  H04Q2011/0064

Abstract: Disclosed is a method fox allocating upstream transmission bandwidth so as to prevent Inter-Scheduling Cycle Gaps (ISCGs) from occurring in an N number of Optical Network Units (ONUs) by using an m number of wavelength channels for upstream transmission in a Wavelength-Division Multiplexing (WDM)-Ethernet Passive Optical Network (EPON). The method includes: grouping the ONUs to be allocated each of the m number of wavelength channels; and performing a Dynamic Bandwidth Allocation (DBA) algorithm in order for the grouped ONUs to efficiently use allocated wavelengths and time slots, thereby allocating each wavelength channel. Accordingly, by using a scheme of managing ONUs by each group, it is possible to more efficiently allocate bandwidth than the online scheduling scheme. As compared with the offline scheduling scheme, ISCGs caused by bandwidth allocation do not occur.