Following the successful use of sidelink in Long Term Evolution (LTE) for Proximity Services (ProSe) and Cellular Vehicular-to-everything (C-V2X), 3rd Generation Partnership Project (3GPP) is working towards its evolution New Radio (NR) systems context so-called NR V2X. This new technology expected to complement LTE C-V2X advanced services by offering low latency, high reliability, throughput V2X driving cases. To do this, equipped with features, such as support groupcast unicast...

This paper presents a machine learning based handover management scheme for LTE to improve the Quality of Experience (QoE) user in presence obstacles. We show that, this scenario, state-of-the-art algorithm is unable select appropriate target cell handover, since it always selects with strongest signal without taking into account perceived QoE after handover. In contrast, our learns from past experience how affected when was done certain eNB. Our performance evaluation shows that proposed...

Recently, there has been much interest by the cellular network industry in utilizing unlicensed spectrum to expand potential capacity. In particular, two LTE technologies gained attention: licensed-assisted access (LAA) and (LTE-U). While these are rapidly entering market, not many studies literature that providing a complete evaluation comparison of their performance. Available work usually focuses on single technology standalone evaluations. Also, despite vast body simulation results...

In this paper, we discuss a handover management scheme for Next Generation Self-Organized Networks. We propose to extract experience from full protocol stack data, make smart decisions in multi-cell scenario, where users move and are challenged by deep zones of an outage. Traditional schemes have the drawback taking into account only signal strength serving, target cell, before handover. However, believe that expected Quality Experience (QoE) resulting decision cell to, should be driving...

License Assisted Access (LAA) is the technology introduced by Third Generation Partnership Project (3GPP) that enables deployment of LTE networks in unlicensed 5 GHz spectrum. To ensure a fair coexistence LAA spectrum with other technologies, e.g., Wi-Fi, 3GPP has standardized use Listen Before Talk (LBT) as default channel-access scheme for LAA. However, performance Wi-Fi when coexisting mainly relies on how LBT parameters are configured In this paper, we focus Contention Window (CW) size...

The big data availability of Radio Access Network (RAN) statistics suggests using it for improving the network management through machine learning based Self Organized (SON) functionalities. However, this may increase already high energy consumption mobile networks. Multi-access Edge Computing can mitigate problem; however, solutions have to be properly designed efficiently working in a distributed fashion. In work, we propose architectures two RAN SON functionalities on multi-task and...

Automation of Radio Access Network (RAN) operation is a fundamental feature to manage sustainable and efficient Beyond Fifth-generation wireless (5G) networks, in the context Next Generation Self-Organizing (NG-SON) vision. Machine Learning (ML) already identified as key ingredient this vision, with new standardized open architectures, like Open-RAN (O-RAN), taking momentum. In paper, we propose models based on single-task Multi-Task (MTL) paradigms address two RAN use cases, handover...

In this paper, we use a New Radio (NR) Vehicular-to-everything (V2X) standard compliant simulator based on ns-3, to study the impact of NR numerologies end-to-end performance. particular, focus V2X Mode 2, used for autonomous resource selection in out-of-coverage communications, and consider two key procedures defined 3GPP: sensing random selection. We pay particular attention interplay between operational numerology window length, parameter 2. The results standard-compliant simulation...

In this paper, we present our approach to simulate mobility management scenarios for LTE heterogeneous network deployments defined by challenging radio propagation scenarios, such as the presence of coverage holes. We focus on module ns-3, which is also known LENA. Our contribution

MIMO spatial multiplexing is an essential feature to increase the communication data rates in current and future cellular systems. Currently, ns-3 lte module leverages abstraction model for 2x2 with of two streams; while mmwave nr modules were lacking option until this work since models not supporting usage multiple antennas multiplexing. In paper, we propose, implement, evaluate enable Dual-Polarized (DP-MIMO). The proposed extension supports DP-MIMO streams can be used by any that...

The next generation of wireless systems will enable vehicles to communicate among themselves and with the surrounding environment, thus providing possibility build cooperative intelligent transportation systems. To design communication technologies that can cope requirements envisioned for future vehicular services, we need specific simulation tools evaluate system performance from an end-to-end perspective. Being one best known open-source network simulators, ns-3 represents perfect...

In this paper, we propose a statistical framework to systematically evaluate the fairness offered by different LTE (Long Term Evaluation) technologies when they coexist with Wi-Fi in unlicensed band. particular, study coexistence performance of both 3GPP LAA (Licensed Assisted Access) and LTE-U (LTE spectrum), as specified forum. We map generally accepted definition onto stochastic dominance concept. use two-sample one-sided Kolmogorov-Smirnov test (KS-test) specific hypothesis defined...

Factories are undergoing a digital transformation towards more cost-efficient, zero-defect manufacturing. The digitalized factories require communication networks capable to satisfy their strict latency and reliability demands. 5G beyond being designed efficiently support services demanding Ultra-Reliable Low Latency Communications (URLLC). At the MAC level, use of dynamic scheduling for uplink transmissions entails non-negligible introduced by signaling exchanged request inform about radio...

In this paper, we use a New Radio (NR) Vehicular-to-everything (V2X) standard compliant simulator based on ns-3, to study the impact of NR numerologies end-to-end performance. particular, focus V2X Mode 2, used for autonomous resource selection in out-of-coverage communications, and consider two key procedures defined 3GPP: sensing non-sensing selection. We pay particular attention interplay between operational numerology window length, parameter 2. The results standard-compliant, simulation...

In this paper, we discuss a handover management scheme for Next Generation Self-Organized Networks. We propose to extract experience from full protocol stack data, make smart decisions in multi-cell scenario, where users move and are challenged by deep zones of an outage. Traditional schemes have the drawback taking into account only signal strength serving, target cell, before handover. However, believe that expected Quality Experience (QoE) resulting decision cell to, should be driving...

MIMO spatial multiplexing is an essential feature to increase the communication data rates in current and future cellular systems. Currently, ns-3 lte module leverages abstraction model for 2x2 with of two streams; while mmwave nr modules were lacking option until this work, since models not supporting usage multiple antennas such as one used suitable mmWave frequencies. In paper, we propose, implement evaluate enable Dual-Polarized (DP-MIMO). The proposed extension supports DP-MIMO streams...

Due to the rapid technology evolution and standardization activity in mobile communication networks, there is need for research community be able develop, test evaluate new and/or already xisting solutions before industrial or real-network implementation. As such, it essential have an open-source tool that provides alternative solution of proprietary simulators are not available public usage. ns-3 5G-LENA simulator end-to-end NR system-level allows extensive performed. However, great...