Design and Experimental Validation of a Software-Defined Radio Access Network Testbed with Slicing Support

Koutlia, Katerina; Ferrús, R.; Coronado, Estefanía; Riggio, Roberto; Casadevall, F.; Umbert, Anna; Pérez‐Romero, Jordi

doi:10.1155/2019/2361352

Cited by 18 publications

(15 citation statements)

References 14 publications

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“…A proof-of-concept implementation of the proposed functional framework and information models is being developed based on open-source RAN distributions and the 5G-EmPOWER platform [32]. For the interested reader, a description of the implemented testbed can be found in [33]. In particular, the work in [33] presents the design of a software-defined RAN (SD-RAN) testbed with network slicing capabilities and showcases the operation of management services for the provisioning of RAN slices along with slice-aware RRM functions used to split the radio resources between RAN slices based on configurable RRM policy attributes.…”

Section: Discussionmentioning

confidence: 99%

“…For the interested reader, a description of the implemented testbed can be found in [33]. In particular, the work in [33] presents the design of a software-defined RAN (SD-RAN) testbed with network slicing capabilities and showcases the operation of management services for the provisioning of RAN slices along with slice-aware RRM functions used to split the radio resources between RAN slices based on configurable RRM policy attributes. Future work is envisaged to implement RRM algorithms able to exploit the full potential of the RRM policy attributes and test their operation under more complex scenarios with multiple cells and a mix of applications demanding diverse QoS characteristics.…”

Section: Discussionmentioning

confidence: 99%

“…A discussion of the internal design of the RSMF falls beyond the scope of this paper. For the interested reader, a description of a specific RSMF implementation compliant with the framework presented here can be found in [33].…”

Section: Management Functions and Interfacesmentioning

confidence: 99%

“…separately for different QoS class identifiers [14]). A practical realization of an extended RRM policy is demonstrated in [33].…”

Section: Rrmpolicyratio2mentioning

confidence: 99%

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On the automation of RAN slicing provisioning: solution framework and applicability examples

Ferrús

Sallent

Pérez‐Romero

et al. 2019

J Wireless Com Network

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Network slicing is a fundamental feature of 5G systems that allows the partitioning of a single network into a number of segregated logical networks, each optimized for a particular type of service, or dedicated to a particular customer or application. While support for network slicing (e.g. identifiers, functions, signalling) is already defined in the latest 3GPP Release 15 specifications, solutions for efficient automated management of network slicing (e.g. automatic provisioning of slices) are still at a much more incipient stage, especially for what concerns the nextgeneration Radio Access Network (NG-RAN). In this context, and consistently with the new service-based management architecture defined by 3GPP for 5G systems, this paper presents a functional framework for the management of network slicing in a NG-RAN infrastructure, delineating the interfaces and information models necessary to support the dynamic and automatic deployment of RAN slices. A discussion on the complexity of such automation follows together with an illustrative description of the applicability of the overall framework and information models in the context of a neutral host provider scenario that offers RAN slices to third party service providers.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Management Functions and Interfacesmentioning

confidence: 99%

“…separately for different QoS class identifiers [14]). A practical realization of an extended RRM policy is demonstrated in [33].…”

Section: Rrmpolicyratio2mentioning

confidence: 99%

See 2 more Smart Citations

On the automation of RAN slicing provisioning: solution framework and applicability examples

Ferrús

Sallent

Pérez‐Romero

et al. 2019

J Wireless Com Network

Self Cite

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“…Recently, starting from [16], [17], there has been remarkable progress in terms of control plane programmability as presented in [18], [19]. Nevertheless, recent state-of-the-art literature mainly focuses on control plane programmability, rather than data plane programmability, in an SDRAN.…”

Section: Related Workmentioning

confidence: 99%

Data Plane Framework for Software-Defined Radio Access Network Based on ETSI-Standard Mobile Device Architecture

et al. 2019

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This paper addresses how to achieve efficient programmability and software portability in the data plane of a software-defined radio access network (SDRAN). We assume a cloud RAN environment that builds on multi-vendor hardware components. Recent literature on SDRAN data plane indicates that software portability remains an issue in terms of efficient execution of software, even if the software is abstracted from the underlying hardware. In addition, software interfaces typically vary across different hardware components in the SDRAN data plane, leading to platform-dependent software management. Generalizing the European Telecommunications Standards Institute approach for a mobile device architecture, this paper presents a novel SDRAN data plane framework, providing efficient hardware platform-independent programmability and software portability. First, to resolve the software portability issue, the proposed data plane framework employs a specific (radio) virtual machine as well as a radio library; the heterogeneous hardware platforms are abstracted, enabling the joint optimization of the radio application code and hardware platform. Second, to achieve platform-independent software management, the proposed data plane framework adopts a double-layered structure enabling users to exploit high-level software management for the SDRAN data plane. Third, the feasibility of the proposed data plane framework is verified through a proof-of-concept (PoC) system with the proposed double-layered structure. Based on this PoC system, we show that users can efficiently perform software management. According to the numerical results obtained from the PoC system, the proposed double-layered structure introduces negligible additional footprint in terms of computational resources, memory requirements, and latency. INDEX TERMS Software-defined RAN, C-RAN, ETSI-standard, data plane programmability, software portability.

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Air‐interface virtualization using filter bank multicarrier and orthogonal frequency division multiplexing configurations

Saad

Bhatti

Zafar

et al. 2020

Trans Emerging Tel Tech

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Mobile networks have to cater for diverse services that have distinct requirements in terms of bandwidth, latency, and so on. Network virtualization is a key technology that efficiently utilizes the network resources to meet these service requirements. In this work, we investigate radio virtualization for creating fine‐grained network slices using orthogonal frequency division multiplexing (OFDM) and filter bank multicarrier (FBMC) combinations; the two are individually referred to as virtual radios (VRs). Using universal software radio peripherals (USRPs), we experimentally analyze multiple configurations of VRs including OFDM‐OFDM, OFDM‐FBMC, and FBMC‐FBMC. An extensive performance comparison is done on the basis of error rate, spectral efficiency, interference power, and computational complexity of the VR configurations that are confined within an operational bandwidth. An increase in transmit power of the VRs is theoretically expected to decrease the error rate, but there is also an increase in adjacent channel interference. Therefore, after a certain decrease in error rate with increase in transmit power, an inflection point is reached after which the error rate starts to increase. Of the three combinations, FBMC‐FBMC gives the lowest error rate (at the highest transmit power), that is, 10% and 18% lower than OFDM‐FBMC and OFDM‐OFDM, respectively. However, FBMC‐FBMC also has the highest complexity. We conclude that this air‐interface virtualization framework allows the network to use the waveform configuration that is best suited to a particular set of services, while considering the pros and cons of the individual waveforms.

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Design and Experimental Validation of a Software-Defined Radio Access Network Testbed with Slicing Support

Cited by 18 publications

References 14 publications

On the automation of RAN slicing provisioning: solution framework and applicability examples

On the automation of RAN slicing provisioning: solution framework and applicability examples

Data Plane Framework for Software-Defined Radio Access Network Based on ETSI-Standard Mobile Device Architecture

Air‐interface virtualization using filter bank multicarrier and orthogonal frequency division multiplexing configurations

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