scholarly journals Dynamic bandwidth allocation algorithm for long reach passive optical network

2021 ◽  
Vol 19 (3) ◽  
pp. 738
Author(s):  
Siti Hasunah Mohammad ◽  
Nadiatulhuda Zulkifli ◽  
Sevia Mahdaliza Idrus
Keyword(s):  
Bandwidth Allocation ◽  
Optical Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Allocation Algorithm ◽  
Dynamic Bandwidth ◽  
Bandwidth Allocation Algorithm

A Heavy Load Optimized Dynamic Bandwidth Allocation Algorithm for Hybrid WDM/TDM VPONs

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Ankur Singhal ◽  
Amit Gupta ◽  
Charanjeet Singh
Keyword(s):  
Optical Networks ◽  
Bandwidth Allocation ◽  
Optical Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Heavy Load ◽  
Idle Period ◽  
Allocation Algorithm ◽  
Dynamic Bandwidth ◽  
Bandwidth Allocation Algorithm

Abstract Hybrid wavelength division multiplexed (WDM)/Time division multiplexed (TDM) virtual passive optical networks (VPONs) are considered to provide cost efficient solutions for ever increasing bandwidth requirements of next generation optical access networks. With the development in technology effective bandwidth assignment has emerged as a major concern area. In this paper a novel heavy load optimized dynamic bandwidth allocation algorithm (HLO-DBA) is proposed for the hybrid WDM/TDM VPONs. Multi point control protocol of Ethernet passive optical network (EPON) is implemented for WDM/TDM VPONs subscribers. The excess bandwidth of lightly loaded subscribers is distributed among heavily loaded users through an efficient mechanism. The proposed technique effectively utilize the idle period between the last transmitted REPORT messages from previous transmission cycle (t-1) to the first GRANT message in the current cycle (t). Optical network units (ONUs) connecting the subscribers are scheduled in such a way so as to reduce the wastage of bandwidth. Performance evaluation of HLO-DBA in terms of quality of service (QOS) metrics like throughput and average delay is done to validate the optimization of the proposed mechanism.

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