Title
An efficient dynamic bandwidth allocation for GPON long-reach extension systems
Abstract
Long-Reach (LR) extension is a promising scenario for the future next generation access networks, enabling less Central Offices (COs) in the field and a large number of customers in the access/metro area. Because of the large propagation time between OLT and ONUs, inefficiency occurs in the Dynamic Bandwidth Allocation (DBA) upstream protocols. To solve this drawback, a new efficient DBA protocol, named GPON Redundancy Eraser Algorithm for Long-Reach (GREAL), is proposed, removing the redundancy caused by an ONU polling cycle or Scheduling Interval (SI) smaller than the Round-Trip-Time (RTT), while providing also multi-service QoS. This algorithm is independent of the SI and uses real data queuing information without prediction, achieving a great enhancement in bandwidth utilization. Nevertheless, prediction techniques can be used together with the GREAL algorithm, improving the DBA protocol and the bandwidth management.
Year
DOI
Venue
2014
10.1016/j.osn.2014.01.009
Optical Switching and Networking
Keywords
DocType
Volume
gigabit-capable passive optical network,optical network unit,quality of service,optical line terminal,dynamic bandwidth allocation,long-reach extension
Journal
14
Issue
ISSN
Citations 
1
1573-4277
2
PageRank 
References 
Authors
0.47
10
3
Name
Order
Citations
PageRank
Vicent Sales143.05
Josep Segarra242.71
Josep Prat31612.37