A QoS-Aware Dynamic Bandwidth Allocation Algorithm for Passive Optical Networks with Non-Zero Laser Tuning Time

The deployment of new 5G services and future demands for 6G make it necessary to increase the performance access networks. This challenge has prompted development standardization proposals Passive Optical Networks (PONs) that offer greater bandwidth, reach a higher rate aggregation users per fiber, being Time- Wavelength-Division Multiplexing (TWDM) promising technological solution increasing capacity by up 40 Gbps using several wavelengths. introduces tunable transceivers into Network Units (ONUs) switching from one wavelength other, thus addressing ever-increasing bandwidth in residential broadband mobile fronthaul networks based on Fiber Home (FTTH) technology. adds complexity sources inefficiency, such as laser tuning time (LTT) delay, which is often ignored when evaluating Dynamic Bandwidth Allocation (DBA) mechanisms. We present novel DBA algorithm dynamically handles allocation switches ONUs’ lasers other while taking LTT consideration. To optimize packet we introduce scheduling mechanism follows Longest Processing Time first (LPT) discipline, implemented over Interleaved Polling with Adaptive Cycle (IPACT) DBA. also provide quality service (QoS) differentiation introducing Max-Min Weighted Fair Share Queuing principle (WFQ) algorithm. our evaluated through simulations against original IPACT algorithm, have extended support multi-wavelengths. With introduction LPT, obtain an improved 73% reduction queue delay achieving QoS WFQ.