Harmonizing 3GPP and NFV Description Models: Providing Customized RAN Slices in 5G Networks

Adamuz-Hinojosa, Oscar; Muñoz, Pablo; Ordoñez-Lucena, José; Ramos-Muñoz, Juan J.; López-Soler, Juan M.

doi:10.1109/mvt.2019.2936168

Cited by 13 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3GPP has studied eight functional split options [25] between CU and DU (see Fig. 2) but currently the high-layer split is focusing on option 2 while few variants are under discussion for the lower-layer split [24], [26], [27].…”

Section: Network Slice Deployment In a Hybrid C-ranmentioning

confidence: 99%

Optimal Virtual Network Function Deployment for 5G Network Slicing in a Hybrid Cloud Infrastructure

Domenico

Liu

2020

Preprint

View full text Add to dashboard Cite

Network virtualization is a key enabler for 5G systems to support the expected use cases of vertical markets. In this context, we study the joint optimal deployment of Virtual Network Functions (VNFs) and allocation of computational resources in a hybrid cloud infrastructure by taking the requirements of the 5G services and the characteristics of the cloud architecture into consideration. The resulting mixedinteger problem is reformulated as an integer linear problem, which can be solved by using a standard solver. Our results underline the advantages of a hybrid infrastructure over a standard centralized radio access network consisting only of a central cloud, and show that the proposed mechanism to deploy VNF chains leads to high resource utilization efficiency and large gains in terms of the number of supported VNF chains. To deal with the computational complexity of optimizing a large number of clouds and VNF chains, we propose a simple low-complexity heuristic that attempts to find a feasible VNF deployment solution with a limited number of functional splits. Numerical results indicate that the performance of the proposed heuristic is close to the optimal one when the edge clouds are well dimensioned with respect to the computational requirements of the 5G services.

show abstract

Section: Network Slice Deployment In a Hybrid C-ranmentioning

confidence: 99%

Optimal Virtual Network Function Deployment for 5G Network Slicing in a Hybrid Cloud Infrastructure

Domenico

Liu

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Except for the RAN resource optimization, some researches designed architectures of implementing RAN slicing for service multiplexing. For instance, the work in [18] proposed a description model to enable the translation of RAN slice requirements (i.e., low latency, high reliability, high throughput, and massive device support) into customized virtualized radio functionalities defined through network function virtualization descriptors.…”

Section: A Prior Workmentioning

confidence: 99%

Multicast eMBB and Bursty URLLC Service Multiplexing in a CoMP-Enabled RAN

Yang

et al. 2020

Preprint

View full text Add to dashboard Cite

This paper is concerned with slicing a radio access network (RAN) for simultaneously serving two typical 5G and beyond use cases, i.e., enhanced mobile broadband (eMBB) and ultra-reliable and low latency communications (URLLC). Although many researches have been conducted to tackle this issue, few of them have considered the impact of bursty URLLC. The bursty characteristic of URLLC traffic may significantly increase the difficulty of RAN slicing on the aspect of ensuring a ultra-low packet blocking probability. To reduce the packet blocking probability, we re-visit the structure of physical resource blocks (PRBs) orchestrated for bursty URLLC traffic in the time-frequency plane based on our theoretical results. Meanwhile, we formulate the problem of slicing a RAN enabling coordinated multipoint (CoMP) transmissions for multicast eMBB and bursty URLLC service multiplexing as a multi-timescale optimization problem. The goal of this problem is to maximize multicast eMBB and bursty URLLC slice utilities, subject to physical resource constraints. To mitigate this thorny multi-timescale problem, we transform it into multiple single timescale problems by exploring the fundamental principle of a sample average approximation (SAA) technique. Next, an iterative algorithm with provable performance guarantees is developed to obtain solutions to these single timescale problems and aggregate the obtained solutions into those of the multi-timescale problem. We also design a prototype for the CoMP-enabled RAN slicing system incorporating with multicast eMBB and bursty URLLC traffic and compare the proposed iterative algorithm with the stateof-the-art algorithm to verify the effectiveness of the algorithm.

show abstract

“…A PoP is a cloud site that hosts the virtual resources to accommodate VNF instances. These PoPs, classified as aggregation and edge PoPs, connect the cell sites with the core network through a hierarchical approach [12].…”

Section: A 3gpp Next Generation Ran Architecturementioning

confidence: 99%

“…The main template is the RAN Network Slice Subnet Template (NSST), proposed by the 3GPP. It could define the gNB components of a RAN slice subnet; and the parameters for its FCAPS management at application level [12]. Since some of the gNB components might be virtualized, the RAN NSST must reference to the NFV management templates to describe the lifecycle of the VNFs that host them [12].…”

Section: Management Of Ran Slice Subnetsmentioning

confidence: 99%

Sharing gNB components in RAN slicing: A perspective from 3GPP/NFV standards

Adamuz-Hinojosa¹,

Muñoz²,

Ameigeiras³

et al. 2019

2019 IEEE Conference on Standards for Communications and Networking (CSCN)

Self Cite

View full text Add to dashboard Cite

To implement the next Generation NodeBs (gNBs) that are present in every Radio Access Network (RAN) slice subnet, Network Function Virtualization (NFV) enables the deployment of some of the gNB components as Virtual Networks Functions (VNFs). Deploying individual VNF instances for these components could guarantee the customization of each RAN slice subnet. However, due to the multiplicity of VNFs, the required amount of virtual resources will be greater compared to the case where a single VNF instance carries the aggregated traffic of all the RAN slice subnets. Sharing gNB components between RAN slice subnets could optimize the trade-off between customization, isolation and resource utilization. In this article, we shed light on the key aspects in the Third Generation Partnership Project (3GPP)/NFV standards for sharing gNB components. First, we identify four possible scenarios for sharing gNB components. Then, we analyze the impact of sharing on the customization level of each RAN slice subnet. Later, we determine the main factors that enable isolation between RAN slice subnets. Finally, we propose a 3GPP/NFV-based description model to define the lifecycle management of shared gNB components.

show abstract

Harmonizing 3GPP and NFV Description Models: Providing Customized RAN Slices in 5G Networks

Cited by 13 publications

References 7 publications

Optimal Virtual Network Function Deployment for 5G Network Slicing in a Hybrid Cloud Infrastructure

Optimal Virtual Network Function Deployment for 5G Network Slicing in a Hybrid Cloud Infrastructure

Multicast eMBB and Bursty URLLC Service Multiplexing in a CoMP-Enabled RAN

Sharing gNB components in RAN slicing: A perspective from 3GPP/NFV standards

Contact Info

Product

Resources

About