Navid Nikaein's research while affiliated with EURECOM and other places

Publications (163)

Article
Radio Access Network (RAN) disaggregation allows operators to mix-and-match multivendor components and bring RAN services from one end to the other. Despite this goal, issues of resource misuse or performance undershoot may arise because of inflexible RAN function deployment and uncoordinated decision-making across different network segments. To ad...
Article
Full-text available
In this work, we present and analyze methods and mechanisms for interconnecting a network slice control and management system of the mobile network, with an IEEE Time-Sensitive Network (TSN) control plane. IEEE TSN is gaining momentum as a key technology that is able to provide network service guarantees for Ethernet-based communications. Although...
Article
Full-text available
The 3rd Generation Partnership Project (3GPP) is investing a notable effort to mitigate the endogenous stack and protocol delays (e.g., introducing new numerology, through preemptive scheduling or providing uplink granted free transmission) to attain to the heterogeneous Quality of Service (QoS) latency requirements for which the fifth generation t...
Article
Network slicing is considered to be the enabler for a coexistence of a multitude of services with heterogeneous requirements on a multi-tenant 5G infrastructure. In the core network, it has shown its potential in customizing and extending service-specific functionality beyond a mere configuration. In the radio access network (RAN) however, service...
Article
3GPP standards organization is performing an impressive effort trying to reach sub-millisecond latencies for 5G. However, such efforts may become fruitless if exogenously generated delays at transport layer are not considered. Nowadays, Radio Access Networks (RANs) are deployed with large buffers to achieve full utilization and avoid squandering wi...
Preprint
Narrowband Internet-of-Things (NB-IoT) is one of the major access technologies proposed to support massive machine type communications (mMTC) services for the 5th generation (5G) mobile networks. Many emerging services and networking paradigms are expected to be developed on top of NB-IoT networks. This paper summarizes the steps required to build...
Conference Paper
Full-text available
5G networks generate massive (quasi-) real-time data streams that different network apps can exploit to implement sophisticated single-or cross-domain control and management logic. This paper presents ElasticSDK, a Software Development Kit specially designed to abstract the development and chaining of such agile 5G monitoring apps for the control,...
Preprint
Full-text available
Fifth Generation (5G) networks are envisioned to be fully autonomous in accordance to the ETSI-defined Zero touch network and Service Management (ZSM) concept. To this end, purpose-specific Machine Learning (ML) models can be used to manage and control physical as well as virtual network resources in a way that is fully compliant to slice Service L...
Chapter
Network slicing is one of the key enablers to provide the required flexibility for the envisioned service‐oriented 5G. We introduce a descriptor, a triple consisting of resources, processing, and state, as a means to describe base stations (BSs) and the embedded slices alike through a unifying description. Second, we propose a RAN slicing system, c...
Experiment Findings
Full-text available
General Info: 4G and 5G RAN monitoring data collected using the ElasticMon 5G monitoring framework over FlexRAN. Published via Crawdad.org (https://doi.org/10.15783/c7-s58c-qn61 ). Description: Ten dataset files containing 4G/5G MAC, RRC and PDCP statistics and monitoring data, grouped into two versions of 5 datasets each: raw statistics and proce...
Data
This is a description document for the dataset “eurecom/elasticmon5G2019 dataset (v. 2019-08-29)”, provided publicly by Eurecom via Crawdad (https://crawdad.org/eurecom/elasticmon5G2019/20190829/) with direct ftp access via Eurecom (ftp://ftp.eurecom.fr/incoming/01-RawDatasets.zip and ftp://ftp.eurecom.fr/incoming/02-PreprocessedDatasets.zip). Ther...
Conference Paper
Full-text available
Provisioning of network slices with appropriate Quality of Experience (QoE) guarantees is one of the key enablers for 5G networks. However, it poses several challenges in the slice management that need to be addressed to achieve an efficient end-to-end (E2E) services delivery. These challenges, among others, include the estimation of QoE Key Perfor...
Article
Full-text available
Multi-connectivity is a 5G key enabler to fulfill multi-service quality-of-service (QoS) requirements. This work examines an opportunistic resource allocation problem under multi-connectivity and limited backhaul capacity in evolved LTE using two utility functions: proportional fairness (PF) and utility proportional fairness (UPF). We then propose...
Article
Media use cases for emergency services require mission-critical levels of reliability for the delivery of media-rich services, such as video streaming. With the upcoming deployment of the fifth generation (5G) networks, a wide variety of applications and services with heterogeneous performance requirements are expected to be supported, and any migr...
Article
5G comes with the promise of sub-millisecond latency, which is critical for realizing an array of emerging URLLC services, including industrial, entertainment, telemedicine, automotive, and tactile Internet applications. At the same time, slicing-ready 5G networks face the challenge of accommodating other heterogeneous coexisting services with diff...
Article
Network slicing is one of the key enablers in providing the required flexibility for realizing the service- oriented fifth-generation (5G) vision and achieving the desired levels of isolation and sharing spanning multiple subnets, i.e., the core network (CN), transport network, and radio access network (RAN). In this article, we highlight the desig...
Article
Full-text available
Ultra-dense networks (UDNs) are a natural deployment evolution for handling the tremendous traffic increase related to the emerging 5G services, especially in urban environments. However, the associated infrastructure cost may become prohibitive. The evolving paradigm of network slicing can tackle such a challenge while optimizing the network resou...
Article
Full-text available
Network slicing is one of the key enablers to provide the required flexibility and to realize the service-oriented vision toward fifth generation (5G) mobile networks. In that sense, virtualization, softwarization, and disaggregation are core concepts to accommodate the requirements of an end-to-end (E2E) service to be either isolated, shared, or c...
Article
Network slicing is one key enabler to provide the required flexibility and to realize the service-oriented 5G vision. Unlike the core network slicing, radio access network (RAN) slicing is still at its infancy and several works just start to investigate the challenges and potentials to enable the multi-service RAN, toward a serviced-oriented RAN (S...
Conference Paper
Full-text available
RAN slicing is one of the key enabler to enable virtualization of a BS and its delivery as a service with different levels of network isolation and sharing so as to accommodate the needs of mobile network operators and verticals. In this demonstration, we show a prototype of a RAN slicing runtime system to enable flexible slice customization on the...
Conference Paper
Network slicing has emerged as a major new networking paradigm for meeting the diverse requirements of various vertical businesses in virtualised and softwarised 5G networks. SliceNet is a project of the EU 5G Infrastructure Public Private Partnership (5G PPP) and focuses on network slicing as a cornerstone technology in 5G networks, and addresses...
Conference Paper
Full-text available
Cloud-RAN based architectures are widely considered a fundamental part of 5G networks. As a consequence, in the upcoming standards for 5G RAN, disaggregating the RAN functionality between a Central Unit (CU) and multiple Distributed Units (DUs) is considered, addressing the splitting of the 5G protocol stack at the PDCP/RLC point. This split is exp...
Conference Paper
Full-text available
EXTENDED ABSTRACT Narrowband Internet-of-things (NB-IoT) is a new standard developed by 3rd generation partnership project (3GPP) to provide IoT services in licensed spectrum. It adopts existing LTE-Advanced (LTE-A) orthogonal frequency-division multiple access (OFDMA) technology but each carrier only requires 180 kHz bandwidth. It allows an operat...
Chapter
This chapter contains a comprehensive summary and analysis of the latest 3rd Generation Partnership Project (3GPP) specifications and also findings from several 5G Public‐Private Partnership (5G PPP) research projects. It provides detailed information for each network domain, as well as for the support of slicing across different operator administr...
Chapter
This chapter addresses implementation challenges and a complexity analysis of 5th generation (5G) hardware (HW) and software (SW) platforms. It focuses on analog and mixed signal HW, and addresses digital HW. The chapter explains the link between the HW and SW domains, and describes a set of functional requirements for SW platforms. The cognitive a...
Chapter
This chapter summarizes the related work on the 5G radio access network (RAN) architecture in 3rd Generation Partnership Project (3GPP) and the 5G Public Private Partnership (5G PPP). It then lists the 5G RAN architecture requirements, as identified in 3GPP and 5G PPP. The chapter dives into details of the 5G RAN protocol stack architecture and rel...
Article
This paper presents and evaluates the first open-source Network Function Virtualization (NFV)/Software Defined Networking (SDN)-based Mobile Edge Computing (MEC) platform. Our platform solves the Mobile Edge (ME) management issues with respect to Application (App) provisioning and traffic management. First, the ME Apps are managed as Virtual Networ...
Article
Public safety communication systems are currently evolving due to emergence of LTE as a mature solution to replace the legacy ones while providing new services. However, LTE is initially designed for commercial cellular network and needs to be furthermore evolved to tackle the substantial requirements of public safety use cases. For instance, oppor...
Chapter
Commoditization and virtualization of wireless networks are changing the economics of mobile networks to help network providers, e.g. Mobile Network Operator (MNO), Mobile Virtual Network Operator (MVNO), move from proprietary and bespoke hardware and software platforms towards an open, cost-effective, and flexible cellular ecosystem. In addition,...
Conference Paper
Software-defined Networking (SDN) is seen as a promising solution that allows for a more distributed, flexible, and scalable network. Multi-access Edge Computing (MEC), initiated as an Industry Specification Group (ISG) within ETSI, is also emerging as a low-latency and high-throughput cloud environment at the edge of network. The noticeable succes...
Conference Paper
Although SDN is considered as one of the key technologies behind the impending 5G evolution of mobile networks, the opportunity of reaping its benefits is largely still untapped on the Radio Access Network (RAN) side due to the lack of a software-defined RAN (SD-RAN) platform. In this work we demonstrate the capabilities of FlexRAN, an open-source...
Conference Paper
Full-text available
In the current 4G era, the dual connectivity technique utilizes radio resources scheduled by two distinct base stations for a single user equipment to enhance the data throughput. Multi-connectivity, as a natural evolution of dual connectivity, is one of the key 5G techniques to improve both the user performance and overall resource utilization, al...
Article
Operators, struggling to continuously add capacity and upgrade their architecture to keep up with data traffic increase, are turning their attention to denser deployments that improve spectral efficiency. Denser deployments make the problem of user association challenging, and much work has been devoted to finding algorithms that strike a tradeoff...
Article
The upcoming 5G ecosystem is envisioned to build business-driven Network Slices to accommodate the different needs of divergent service types, applications and services in support of vertical industries. In this paper, we describe the Network Slicing concept, by unveiling a novel Network Slicing architecture for integrated 5G communications. Furthe...
Article
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The virtualisation of Radio Access Networks (RANs) is one of the goals in designing 5G mobile networks. This paper aims at presenting a proof of concept for the virtualisation of radio resources using Open Air Interface (OAI), a software-based Long-Term Evolution (LTE) eNodeB physical emulator. OAI was extended to support multi-tenancy, representin...
Article
In this paper we address the support of wearable mHealth applications in LTE and future 5G networks following a holistic approach that spans across the elements of a mobile network. The communication requirements change from one application to another so we propose a measurement methodology to facilitate the selection of the user equipment to fulfi...
Article
The 5G networks are envisioned to use mmWave bands to provide gigabit-per-second throughput. To extend the coverage of extreme data rates provided by mmWave technologies, we consider two-hop relaying based on D2D communication in an integrated mmWave/sub-6 GHz 5G network. Compared to single-hop multi-cell networks, two-hop D2D relaying in this netw...
Article
Knowing the variety of services and applications to be supported in the upcoming 5G systems, the current "one size fits all" network architecture is no more efficient. Indeed, each 5G service may have different needs in terms of latency, bandwidth, and reliability, which cannot be sustained by the same physical network infrastructure. In this conte...
Article
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Centralized RAN processing has been identified as one of the major enablers for 5G mobile network access. By moving the baseband units (BBU) to the Cloud, multiple instances can be instantiated on the fly, serving several Remote Radio Head (RRH) units. The goal is to satisfy the existing demand of particular geographical areas, whereas drastically...
Chapter
Mission critical communications have been traditionally provided with proprietary communication systems (like Tetra), offering a limited set of capabilities, and mainly targeting voice services. Nevertheless, the current explosion of mobile communications and the need for increased performance and availability especially in mission critical scenari...
Chapter
Full-text available
Long-Term Evolution (LTE) is a new communication standard developed by the Third Generation Partnership Project (3GPP). Currently, LTE is becoming a 4G reference architecture due to its widespread adoption among leading operators of mobile telecommunications. LTE is therefore foreseen as an important foundation for future 5G networks. In the shift...
Article
In this work, we propose a general-purpose coordinator–master–worker (GP-CMW) model to enable efficient and scalable simulation. The model supports distributed and parallel simulation over a heterogeneous computing node architecture with both multi-core CPUs and GPUs. The model aims at maximizing the hardware activity rate while reducing the overal...
Chapter
Long-term evolution (LTE) is becoming the technology reference for 4G cellular networks, as it is increasingly adopted by all major operators all over the world. Currently, LTE is rising to the challenge of addressing several issues (e.g. cellular networks’ capacity crunch, ultra-high bandwidth, ultra-low latency, massive numbers of connections, su...