25 documents found, page 1 of 3
Spectrum sharing for LTE and 5G-NR coexistence
Busari, Sherif Adeshina; Correia, Noélia; Saghezchi, Firooz B.; Mumtaz, Shahid; Rodriguez, JonathanSpectrum sharing provides a rapid migration pathway toward 5G by enabling the coexistence of 4G LTE and 5G new radio (NR) that share the same spectrum. Due to significant differences in the LTE and 5G-NR air interfaces, several enablers are required to facilitate the spectrum sharing. In this study, we explore the coexistence features and investigate their impacts on network performance. For static and dynamic ...
Outage Probability of V2V Multiple-Antenna Rice Fading Links with Explicit Grou...
Gutiérrez Gaitán, Miguel; Samano-Robles, Ramiro; Rodriguez, JonathanThis paper investigates the improvement in terms of outage probability of a vehicle-to-vehicle (V2V) communication link with respect to the density of antennas used at each vehicle end. The objective is to find a trade-off between system complexity and communication performance considering that the deterministic component of the link is affected explicitly by multiple ground reflections (self-interference). The...
Optimization of mixed numerology profiles for 5G wireless communication scenarios
Correia, Noélia; Al-Tam, Faroq; Rodriguez, JonathanThe management of 5G resources is a demanding task, requiring proper planning of operating numerology indexes and spectrum allocation according to current traffic needs. In addition, any reconfigurations to adapt to the current traffic pattern should be minimized to reduce signaling overhead. In this article, the pre-planning of numerology profiles is proposed to address this problem, and a mathematical optimiz...
Performance evaluation of radio resource schedulers in LTE and 5G NR two-tier H...
Busari, Sherif Adeshina; Correia, Noélia; Mumtaz, Shahid; Rodriguez, Jonathan; Saghezchi, Firooz B.Network performance is critically dependent on the employed radio resource scheduler (RRS). The impact becomes even more significant in 5G ultra-dense networks due to the challenges of complicated base station distribution, user association, load balancing and inter-cell interference, among others. Using a combination of three popular schedulers (i.e., round robin (RR), proportional fairness (PF) and best chann...
A novel mapping technique for ray tracer to system-level simulation
Khan, Muhammad Awais; Busari, Sherif Adeshina; Saidul Huq, Kazi Mohammed; Mumtaz, Shahid; Al-Rubaye, Saba; Rodriguez, Jonathan; Al-Dulaimi, AnwerSimulations have become remarkably useful in evaluating the performance of new techniques and algorithms in communication networks. This is due to its comparative cost, time and complexity advantage over the analytical and field trial approaches. For large-scale networks, system-level simulators (SLS) are used to assess the performance of the systems. The SLS typically employs statistical channel models to char...
Determination of areas for surface refractivity variation analysis over Quebec
Bettouche, Yamina; Agba, Basile; Kouki, Ammar; Obeidat, Huthaifa; Alhassan, Haru; AlAbdullah, Ali; Rodriguez, Jonathan; Abd-Alhameed, RaedFor the aim of surface refractivity analysis, the overall territory of Quebec has been divided in a desired number of areas from North to South using clustering analysis. The meteorological data used in the analysis are collected from 50 stations located in various climatic regions over Quebec for the year 2013. It is found that the best input data for the identification of areas is the water vapour pressure. T...
Using deep neural networks for forecasting cell congestion on LTE networks: a s...
Torres, Pedro; Marques, Hugo; Marques, Paulo; Rodriguez, JonathanPredicting short-term cellular load in LTE networks is of great importance for mobile operators as it assists in the efficient managing of network resources. Based on predicted behaviours, the network can be intended as a proactive system that enables reconfiguration when needed. Basically, it is the concept of self-organizing networks that ensures the requirements and the quality of service. This paper uses a ...
Multiview real-time media distribution for next generation networks
Marques, Hugo; Silva, Hélio; Logota, Evariste; Rodriguez, Jonathan; Vahid, Seiamak; Tafazolli, RahimWith the massive deployment of broadband access to the end-users, the continuous improvement of the hardware capabilities of end devices and better video compression techniques, acceptable conditions have been met to unleash over-the-top bandwidth demanding and time-stringent P2P applications, such as multiview real-time media distribution. Such applications enable the transmission of multiple views of the same...
Load forecasting in WIFI access points over the LTE network
Marques, Hugo; Torres, Pedro; Marques, Paulo; Dionísio, Rogério Pais; Rodriguez, JonathanThe concept of smart cities grew with the need to rethink the use of urban spaces based on the constant technological advances and respecting sustainability. Today the urbanism and the methodologies to think about the city are changing, as citizens want more access to digital information on almost everything. Therefore, cities need to be planned and equipped with infrastructures that enable connectivity between...
CANDi: context-aware node discovery for short-range cooperation
Alam, Muhammad; Albano, Michele; Radwan, Ayman; Rodriguez, JonathanMulti-standard mobile devices are allowing users to enjoy higher data rates with ubiquitous connectivity. However, the benefits gained from multiple interfaces come at an expense—that being higher energy consumption in an era where mobile devices need to be energy compliant. One promising solution is the usage of short-range cooperative communication as an overlay for infrastructure-based networks taking advant...