Energy Efficient Dynamic Optical Routing for Mobile Metro-Core Networks Under Tidal Traffic Patterns

The Skip-link architecture dynamically reconfigures Network-on-Chip (NoC) topologies in order to reduce the overall switching activity in many-core systems. The proposed architecture allows the creation of long-range Skip-links at runtime to reduce the logical distance between frequently communicating nodes. This offers a number of advantages over existing methods of creating optimised topologies already present in research, such as the Reconfigurable NoC (ReNoC) architecture and static Long-Range Link (LRL) insertion. This architecture monitors traffic behaviour and optimises the mesh topology without prior analysis of communications behaviour, and is thus applicable to all applications. The technique described here does not utilise a master node, and each router acts independently. The architecture is thus scalable to future many-core networks. The authors evaluate the performance using a cycle-accurate simulator with synthetic traffic patterns and compare the results to a mesh architecture, demonstrating logical hop count reductions of 12-17%. Coupled with this, up to a doubling in critical load is observed, and the potential for 10% energy reductions on a 16×16 node network.

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Proposal for an SDN-Like Innovative Metro-Access Optical Network Architecture

International Journal of Optics ◽

10.1155/2019/3618785 ◽

2019 ◽

Vol 2019 ◽

pp. 1-18

Author(s):

Tommaso Muciaccia ◽

Vittorio M. N. Passaro

Keyword(s):

Optical Networks ◽

Traffic Congestion ◽

Network Architecture ◽

Optical Network ◽

Traffic Patterns ◽

Network Nodes ◽

Core Networks ◽

Error Ratio ◽

Bit Error Ratio ◽

Specific Implementation

Today, telecommunication operators are facing an epochal challenge due to the need of higher reconfigurability, flexibility, and dynamicity for their networks. In the latest years, this necessity has been addressed by the introduction of Software-Defined Networking (SDN), mainly in the fields of data centers and core networks. The present work introduces a unified metro-access optical network architecture based on some features inspired by SDN models. The essential aim is to enable bandwidth shared among different passive optical networks (PONs) in order to achieve higher adaptability to increasingly migratory and volatile traffic patterns. Even if the present work is mainly focused on the architecture, several hints for specific implementation of the network nodes are detailed as well in order to demonstrate its feasibility. Several numerical simulations have been performed to assess the performance of the proposed solution both about physical effects and about quality of service. Bit error ratio degradation due to physical impairments has been evaluated and traffic congestion has been estimated in terms of burst loss probability and average throughput.

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Energy efficient core networks using network coding

2015 17th International Conference on Transparent Optical Networks (ICTON) ◽

10.1109/icton.2015.7193630 ◽

2015 ◽

Cited By ~ 2

Author(s):

Mohamed O. I. Musa ◽

Taisir E. H. El-Gorashi ◽

Jaafar M. H. Elmirghani

Keyword(s):

Network Coding ◽

Energy Efficient ◽

Core Networks

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Implementation and Evaluation of Skip-Links

Adoption and Optimization of Embedded and Real-Time Communication Systems ◽

10.4018/978-1-4666-2776-5.ch010 ◽

2013 ◽

pp. 181-203

Author(s):

Simon J. Hollis ◽

Chris Jackson

Keyword(s):

Long Range ◽

Traffic Patterns ◽

Master Node ◽

Hop Count ◽

Core Networks ◽

Mesh Topology ◽

Node Network ◽

On Chip ◽

Many Core ◽

Prior Analysis

The Skip-link architecture dynamically reconfigures Network-on-Chip (NoC) topologies in order to reduce the overall switching activity in many-core systems. The proposed architecture allows the creation of long-range Skip-links at runtime to reduce the logical distance between frequently communicating nodes. This offers a number of advantages over existing methods of creating optimised topologies already present in research, such as the Reconfigurable NoC (ReNoC) architecture and static Long-Range Link (LRL) insertion. This architecture monitors traffic behaviour and optimises the mesh topology without prior analysis of communications behaviour, and is thus applicable to all applications. The technique described here does not utilise a master node, and each router acts independently. The architecture is thus scalable to future many-core networks. The authors evaluate the performance using a cycle-accurate simulator with synthetic traffic patterns and compare the results to a mesh architecture, demonstrating logical hop count reductions of 12-17%. Coupled with this, up to a doubling in critical load is observed, and the potential for 10% energy reductions on a 16×16 node network.

Download Full-text