scholarly journals Efficiency Tests of DBA Algorithms in XG-PON

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 762 ◽  
Author(s):  
Pavel Sikora ◽  
Tomas Horvath ◽  
Petr Munster ◽  
Vaclav Oujezsky
Keyword(s):  
Bandwidth Allocation ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Optical Network Unit ◽  
The Right ◽  
Dynamic Bandwidth ◽  
Throughput And Delay

Sophisticated dynamic bandwidth allocation (DBA) algorithms can dramatically improve or worsen throughput and delay in whole networks. It is very important to choose the right DBA algorithm. Our work tests static assignment and three DBA algorithms, namely GigaPON Access Network DBA, Hybrid Reporting Allocation, and modified Max–Min Fair. All tests were made on our simulator of ten-gigabit passive optical network DBA specially developed for testing DBA algorithms. The tests verify delay of each optical network unit and amount of waste with bandwidth. This paper describes how the used DBA algorithms work and the processes involved in DBA algorithms.

scholarly journals Implementation of a One-LLID-per-Queue DBA Algorithm in EPON

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
N. A. M. Radzi ◽  
N. M. Din ◽  
M. H. Al-Mansoori ◽  
H. Zainol Abidin
Keyword(s):  
Traffic Flow ◽  
Bandwidth Allocation ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Global Priority ◽  
Upstream Direction ◽  
Ethernet Passive Optical Network ◽  
Dynamic Bandwidth

The advantages of Ethernet passive optical network (EPON) are setting it to be a natural ubiquitous solution for the access network. In the upstream direction of EPON, the directional property of the splitter requires that the traffic flow be mitigated to avoid collision. A dynamic bandwidth allocation (DBA) scheme is desirable in optimizing the bandwidth usage further. In this paper, a global priority DBA mechanism is discussed. The mechanism aims to reduce the overall delay while enhancing the throughput and fairness. This study was conducted using MATLAB where it was compared to two other algorithms in the literature. The results show that the delay is reduced up to 59% and the throughput and fairness index are improved up to 10% and 6%, respectively.

scholarly journals Design and Analytical Analysis of a Novel DBA Algorithm with Dual-Polling Tables in EPON

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jiunn-Ru Lai ◽  
Hsin-Yi Huang ◽  
Wen-Ping Chen ◽  
Luke K. Wang ◽  
Ming-Yuan Cho
Keyword(s):  
Bandwidth Allocation ◽  
Optical Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Media Access ◽  
Double Phase ◽  
Effective Media ◽  
Time Problem ◽  
Asymmetric Load ◽  
Dynamic Bandwidth

Ethernet passive optical network is a point-to-multipoint structure, and an effective media access protocol should be designed for collision avoidance and bandwidth allocation. Most previous researches have aimed to solve the problem using dynamic bandwidth allocation (DBA) algorithms with polling-based schemes. Unfortunately, idle channel time among the polling cycles cannot be overcome efficiently. In this paper, a dual-polling DBA (DP-DBA) algorithm which consists of an interpolling mechanism and an intrapolling mechanism is proposed. The interpolling mechanism helps eliminate the idle time problem while the intrapolling part aggregates the unused bandwidth of the light-loaded users and those due to nondefragmentation of the Ethernet frames of the general users. We also evaluate the performance of the DP-DBA algorithm by a comparison with the interleaved polling with adaptive cycle time (IPACT), the dynamic bandwidth allocation with a modified grant table generation algorithm (DBA2), the Double-Phase Polling (DPP), and the adaptive DBA algorithm with sorting report messages (Sort-DBA) schemes with simulation results. For greater realism with regard to general applications, we also simulate the asymmetric traffic loads at the optical network units (ONUs).The results show that DP-DBA outperforms the other DBA schemes under asymmetric load conditions.

Staged priority-based dynamic bandwidth allocation in software-defined hybrid passive optical network

2018 ◽  
Vol 57 (12) ◽  
pp. 1 ◽  
Author(s):  
Chen Qian ◽  
Yifan Li ◽  
Qianwu Zhang ◽  
Bingyao Cao ◽  
Zhengxuan Li ◽  
...  
Keyword(s):  
Bandwidth Allocation ◽  
Optical Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Dynamic Bandwidth
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