Journal
IEEE COMMUNICATIONS LETTERS
Volume 25, Issue 6, Pages 1857-1861Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2021.3063262
Keywords
Manganese; 5G mobile communication; Optical fiber networks; Radio access networks; Cloud computing; Wavelength division multiplexing; Simulation; Optical networking; 5G; cloud computing; network control and management; service provisioning; latency; availability; backup connectivity
Categories
Funding
- MSCA-ITN project 5G STEP FWD
- European Union [722429]
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The study addresses a key challenge of 5G networks by proposing a strategy for resource-efficient allocation in large core data centers, which shows significant improvement in resource efficiency. This approach also helps avoid possible violation of service availability requirements and lowers service blocking probability.
We address a key challenge of 5G networks by proposing a strategy for the resource-efficient and end-to-end allocation of compute and connectivity resources in a dynamic 5G service provisioning scenario, such that the service latency and availability requirements are guaranteed. Our heuristic algorithm shows that resource efficiency is significantly improved by processing services in the large core data centers (DCs) with a rich amount of compute resources and exploiting the benefits of traffic grooming over the metro and core fiber links. Moreover, our resource-efficient provisioning algorithm avoids possible violation of the service availability requirements caused by reaching the central DC locations by adding backup connectivity resources. Our simulation results demonstrate a resource efficiency improvement reflected by lowering the service blocking probability by up to four orders of magnitude compared to the conventional service provisioning methods utilizing distributed small DCs.
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