# TDM/WDM over AWGR Based Passive Optical Network Data Centre Architecture

## TL;DR

This paper proposes an AWGR-based passive optical data centre architecture utilizing TDM/WDM techniques, optimized with MILP, achieving up to 75% better resource utilization and addressing congestion issues.

## Contribution

It introduces a novel AWGR-based architecture combined with TDM/WDM and MILP optimization for efficient resource allocation in data centre networks.

## Key findings

- Up to 75% improvement in resource utilization.
- Effective mitigation of oversubscription and congestion.
- Enhanced traffic flow management using TDM/WDM.

## Abstract

Passive Optical Data Centre Networks have been developed due to the performance limitations in current data centres to provide high performance within data centre networks. An AWGR based passive optical network data centre architecture is evaluated using a TDM/WDM multiple access technique to provision the flow of traffic among the network efficiently. A Mixed Integer Linear Programming model is developed to optimise resource allocation in the architecture. Using WDM-TDM as a multiple access technique helps in solving issues such as oversubscription and congestion by allowing servers to make simultaneous transmissions of packets in different time slots. The results show that the provisioning / allocation of resource within the architecture is improved with improvements of up to 75% in resource utilisation.

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Source: https://tomesphere.com/paper/1904.04581