Towards the deployment of a fully centralized Cloud-RAN architecture
- Resource Type
- Conference
- Authors
- Rodriguez, Veronica Quintuna; Guillemin, Fabrice
- Source
- 2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC) Wireless Communications and Mobile Computing Conference (IWCMC), 2017 13th International. :1055-1060 Jun, 2017
- Subject
- Communication, Networking and Broadcast Technologies
Cloud computing
Computer architecture
Runtime
Parallel processing
Decoding
Long Term Evolution
Antennas
Cloud-RAN
NFV
VNF
BBU
channel decoding
multi-core
global scheduling
- Language
- ISSN
- 2376-6506
In the framework of Network Function Virtualization (NFV), we address in this work the design and sizing of Cloud-RAN architectures. We concretely investigate the execution time of software-based Base Band Units (BBUs) on multi-core systems. Since Cloud-RAN requires a real-time behavior, we use parallel programming techniques in order to minimize the runtime of BBU functions. For an efficient utilization of computing resources, we investigate the relevance of resource pooling where a global scheduling algorithm allocates processing units to runnable BBU-jobs. We specifically examine the gain that can be obtained when applying data parallelism on the channel decoding BBU-function which is the most expensive one in terms of processing time. Performance results show a significant reduction in the runtime of PHY functions which enables the deployment of a fully centralized Cloud-RAN architecture.