| 1. |
- Chiaraviglio, Luca, et al.
(author)
-
Minimum Cost Design of Cellular Networks in Rural Areas with UAVs, Optical Rings, Solar Panels and Batteries
- 2019
-
In: IEEE Transactions on Green Communications and Networking. - 2473-2400.
-
Journal article (peer-reviewed)abstract
- Bringing the cellular connectivity in rural zones is a big challenge, due to the large installation costs that are incurred when a legacy cellular network based on fixed Base Stations (BSs) is deployed. To tackle this aspect, we consider an alternative architecture composed of UAV-based BSs to provide cellular coverage, ground sites to connect the UAVs with the rest of the network, Solar Panels (SPs) and batteries to recharge the UAVs and to power the ground sites, and a ring of optical fiber links to connect the installed sites. We then target the minimization of the installation costs for the considered UAV-based cellular architecture, by taking into account the constraints of UAVs coverage, SPs energy consumption, levels of the batteries and the deployment of the optical ring. After providing the problem formulation, we derive an innovative methodology to ensure that a single ring of installed optical fibers is deployed. Moreover, we propose a new algorithm, called DIARIZE, to practically tackle the problem. Our results, obtained over a set of representative rural scenarios, show that DIARIZE performs very close to the optimal solution, and in general outperforms a reference design based on fixed BSs.
|
|
| 2. |
- Chiaraviglio, Luca, et al.
(author)
-
Optimal Design of 5G Networks in Rural Zones with UAVs, Optical Rings, Solar Panels and Batteries
- 2018
-
In: 2018 20TH ANNIVERSARY INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781538666050
-
Conference paper (peer-reviewed)abstract
- We focus on the problem of designing a 5G network architecture to provide coverage in rural areas. The proposed architecture is composed of 5G Base Stations carried by Unmanned Aerial Vehicles (UAVs), and supported by ground sites interconnected through optical fiber links. We also consider the dimensioning of each site in terms of the number of Solar Panels (SPs) and batteries. We then formulate the problem of cost minimization of the aforementioned architecture, by considering: i) the cost for installing the sites, ii) the costs for installing the SPs and the batteries in each site, iii) the costs for installing the optical fiber links between the installed sites, and iv) the scheduling of the UAVs to serve the rural areas. Our results, obtained over a representative scenario, reveal that the proposed solution is effective in limiting the total costs, while being able to ensure the coverage over the rural areas.
|
|
| 3. |
- Abeywickrama, Sandu, et al.
(author)
-
Protecting core networks with dual-homing: A study on enhanced network availability, resource efficiency, and energy-savings
- 2016
-
In: Optics Communications. - : Elsevier. - 0030-4018 .- 1873-0310. ; 381, s. 327-335
-
Journal article (peer-reviewed)abstract
- Core network survivability affects the reliability performance of telecommunication networks and remains one of the most important network design considerations. This paper critically examines the benefits arising from utilizing dual-homing in the optical access networks to provide resource-efficient protection against link and node failures in the optical core segment. Four novel, heuristic-based RWA algorithms that provide dedicated path protection in networks with dual-homing are proposed and studied. These algorithms protect against different failure scenarios (i.e. single link or node failures) and are implemented with different optimization objectives (i.e., minimization of wavelength usage and path length). Results obtained through simulations and comparison with baseline architectures indicate that exploiting dual-homed architecture in the access segment can bring significant improvements in terms of core network resource usage, connection availability, and power consumption.
|
|
| 4. |
|
|
| 5. |
- Ahmed, Jawwad, et al.
(author)
-
Survivability strategies for PCE-based WDM networks offering high reliability performance
- 2013
-
In: National Fiber Optic Engineers Conference, NFOEC 2013. - Washington, D.C. : Optical Society of America.
-
Conference paper (peer-reviewed)abstract
- Two approaches based on backup reprovisioning and path restoration are proposed for dynamic failure recovery in survivable, PCE-based, WDM networks. Results show that proposed schemes can achieve high connection availability in double link failure scenarios.
|
|
| 6. |
|
|
| 7. |
- Amato, Elisabetta, et al.
(author)
-
A Resource Sharing Method for Reliable Slice as a Service Provisioning in 5G Metro Networks
- 2021
-
In: 2021 25th Conference On Optical Network Design And Modelling, ONDM 2021. - 9783903176331 ; , s. 1-3
-
Conference paper (peer-reviewed)abstract
- This paper proposes a dynamic slice provisioning analysis in a 5G metro network with reliability guarantees and possible sharing of backup resources. Performance of dedicated (DP) and shared (SP) protection solutions are evaluated with respect to slice resource allocation (i.e., bandwidth and processing units). The main results show a remarkable saving, in terms of slice acceptance rate, by applying SP solutions with respect to conventional DP ones.
|
|
| 8. |
- Araujo, Igor M., et al.
(author)
-
Availability-Guaranteed Service Function Chain Provisioning with Optional Shared Backups
- 2020
-
In: 2020 16TH INTERNATIONAL CONFERENCE ON THE DESIGN OF RELIABLE COMMUNICATION NETWORKS DRCN 2020. - : IEEE.
-
Conference paper (peer-reviewed)abstract
- The dynamic provisioning of Service Function Chain (SFC) using Virtual Network Functions (VNFs) is a challenging problem, especially for availability-constrained services. The provisioning of backup resources is often used to ensure that availability requirements are fulfilled. However, the assignment of backup resources should be carefully designed to avoid resource inefficiencies as much as possible. This paper proposes the Optional Backup with Shared Path and Shared Function (OBSPSF) strategy, which aims at improving resource efficiency while fulfilling the availability requirements of SFC requests. The strategy uses optional backup provisioning to ensure that backup resources are assigned only when strictly needed (i.e., when the SFC alone does not meet the availability constraint). Moreover, OBSPSF encourages backup sharing (among both connectivity and backup VNFs) to reduce the backup resource overhead. Results show that the strategy can accommodate orders-of-magnitude more services than benchmark heuristics from the literature.
|
|
| 9. |
- Ayoub, Omran, et al.
(author)
-
Towards Explainable Reinforcement Learning in Optical Networks: The RMSA Use Case
- 2024
-
In: Conference on Optical Fiber Communication, Technical Digest Series.
-
Conference paper (peer-reviewed)abstract
- We propose an approach to extract explanations from a trained reinforcement learning agent. Our analysis over three RMSA environment variations shows how the agent uses the input information, increasing our understanding of its learned policy.
|
|
| 10. |
- Cardoso, Diego, et al.
(author)
-
Joint planning of small cells and optical transport deployment in heterogeneous mobile networks
- 2016
-
In: Asia Communications and Photonics Conference, ACP. - : OSA - The Optical Society.
-
Conference paper (peer-reviewed)abstract
- We investigate how to reduce the deployment cost of heterogeneous mobile networks by joint dimensioning small cells and optical transport resources. The proposed heuristic is able to save 24% of total network deployment cost. Asia Communications and Photonics Conferene (ACP)
|
|
