Dynamic Resource Allocation in LRDynamic Resource Allocation in LRDynamic Resource Allocation in LRLei Guan, Séamas McGettrick, Alan Hill, David B. Payne

Problems: Upstream Traffic Congestion Potential Solutions: DBA & DWA

Dynamic Bandwidth Allocation

Dynamic Wavelength AllocationDynamic Wavelength AllocationSimplified LR-PON Architecture

Technical Perspective

Our work focus on:1) DBA for 512 1) DBA for 512 2) Meet the fairness requirement;3) Minimize the overhead;3) Minimize the overhead;4) Minimize the average latency;

Max ONU number per PONMax ONU number per PON

Max active user number per ONU

Max TSimplified Relation of Upstream Service Bandwidth (BW) to ONU Bandwidth

Max T

Meet your various bandwidth Meet your various bandwidth Meet your various bandwidth needs dynamicallyneeds dynamically

Dynamic Resource Allocation in LR-PONDynamic Resource Allocation in LR-PONDynamic Resource Allocation in LR-PONLei Guan, Séamas McGettrick, Alan Hill, David B. Payne, Marco Ruffini

End User PerspectiveNetwork Operator Perspective

Fairness among ONUs /T-conts QoS or QoE indicationNetwork ThroughputFairness among ONUs /T-conts QoS or QoE indicationNetwork Throughput

Packets DroppingPackets Dropping

Average Packets Delay Long LatencySystem EfficiencyAverage Packets Delay Long LatencySystem Efficiency

Ongoing Work on Algorithm Ongoing Work on Evaluation Platform

Our work focus on:DBA for 512 - 1024 ONUs;DBA for 512 - 1024 ONUs;Meet the fairness requirement;Minimize the overhead;Minimize the overhead;Minimize the average latency;

Technical aspect ValueTechnical aspect Value

Reach (distance) 100 – 125 km

Transmission RTT 1 ms for 100 kmTransmission RTT(5 us/km)

1 ms for 100 km1.25 ms for 125 km

Max ONU number per PON 1024Max ONU number per PON 1024

active user number per ONU 4

Max T-cont number per user 4Proposed Hardware-based Testing Platform

Max T-cont number per user 4