Aircraft to operations communication analysis and architecture for the future aviation environment

Fifth Generation (5G) systems are envisaged to support a wide range of applications scenarios with varying requirements. 5G architecture includes network slicing abilities which facilitate the partitioning of a single network infrastructure on to multiple logical networks, each tailored to a given use case, providing appropriate isolation and Quality of Service (QoS) characteristics. Radio Access Network (RAN) slicing is key to ensuring appropriate QoS over multiple domains; achieved via the configuration of multiple RAN behaviours over a common pool of radio resources. This Paper proposes a novel solution for efficient resource allocation and assignment among a variety of heterogeneous services, to utilize the resources while ensuring maximum QoS for network services. First, this paper evaluates the effectiveness of different wireless data bearers. Secondly, the paper proposes a novel dynamic resource allocation algorithm for RAN slicing within 5G New Radio (NR) networks utilising cooperative game theory combined with priority-based bargaining. The impact of this work to industry is to provide a new technique for resource allocation that utilizes cooperative bargaining to ensure all network services achieve minimum QoS requirements – while using application priority to reduce data transfer time for key services to facilitate decreased turnaround time at the gate

Characterization of a global 4G mobile communications network using the commercial aircraft network

The ever increasing demand for high data rates and mobility, at the same time with the lowest latency possible, comes as a motivation and inspiration for the writing of this dissertation. Besides terrestrial networks, another common way to communicate nowadays is via satellite networks; low Earth orbit satellites are the ones closer to the Earth, still, they are 800km away, requiring high energetic consumption. Routes used by commercial air traffic cover great part of the globe, with higher incidence in the most populated areas, namely North America, Europe and Eastern Asia. The main objective of this project is to prove that it would be possible to have a global coverage network or, at least, a network able to fulfil the needs of users located in the most populated regions, where air traffic is denser. Users would be able to communicate to any part of the world; the nearest aircraft gets the signal and, since they are organized as a mesh network, it travels from aircraft to aircraft until it reaches its final destination. LTE frequency bands have a great margin to operate without interfering with the frequencies used in aeronautical radio communication systems, as will be seen in Chapter 3. The work developed shows that the most favourable conditions regarding the maximum distances obtained to establish the communication will be to set up the proposed system using QPSK, a 1.4 MHz channel and transmission frequency should be 737 MHz. Thus, maximum attainable distance in rural scenario is 46.62 km.A constante procura por taxas de alto débito e mobilidade, aliado à menor latência possível, surgiram como motivação e inspiração para a escrita desta dissertação. Além das redes terrestres, outra forma comum de comunicar nos dias de hoje é recorrendo a redes de satélites; os satélites de baixa órbita são os que estão mais próximo da Terra, no entanto estão a 800km de distância, o que requer um elevado consumo energético. As rotas utilizadas pelos aviões comerciais cobrem grande parte do globo, com maior incidência nas zonas mais povoadas, nomeadamente América do Norte, Europa e Este da Asia. O maior objetivo deste projeto é provar que é possível haver uma rede de cobertura global ou, pelo menos, uma rede capaz de satisfazer as necessidades dos utilizadores localizados nas zonas mais povoadas onde o tráfego aéreo é mais frequente. Os utilizadores poderiam comunicar para qualquer parte do mundo; o avião mais próximo receberia o sinal e, como estes estão organizados numa rede mesh, o sinal viajaria de avião em avião, até chegar ao seu destino. As bandas de frequência usadas no LTE têm uma grande margem para operar sem interferir com as frequências utilizadas nas comunicações na aviação, como será visto no Capítulo 3. O A constante procura por taxas de alto débito e mobilidade, aliado à menor latência possível, surgiram como motivação e inspiração para a escrita desta dissertação. Além das redes terrestres, outra forma comum de comunicar nos dias de hoje é recorrendo a redes de satélites; os satélites de baixa órbita são os que estão mais próximo da Terra, no entanto estão a 800km de distância, o que requer um elevado consumo energético. As rotas utilizadas pelos aviões comerciais cobrem grande parte do globo, com maior incidência nas zonas mais povoadas, nomeadamente América do Norte, Europa e Este da Asia. O maior objetivo deste projeto é provar que é possível haver uma rede de cobertura global ou, pelo menos, uma rede capaz de satisfazer as necessidades dos utilizadores localizados nas zonas mais povoadas onde o tráfego aéreo é mais frequente. Os utilizadores poderiam comunicar para qualquer parte do mundo; o avião mais próximo receberia o sinal e, como estes estão organizados numa rede mesh, o sinal viajaria de avião em avião, até chegar ao seu destino. As bandas de frequência usadas no LTE têm uma grande margem para operar sem interferir com as frequências utilizadas nas comunicações na aviação, como será visto no Capítulo 3. O trabalho desenvolvido mostra-nos que as condições mais favoráveis, no que toca a distâncias máximas obtidas para estabelecer a comunicação, serão montar o sistema proposto utilizando QPSK, um canal de 1.4 MHz e cuja frequência de transmissão seja 737 MHz. Assim, consegue-se obter uma distância máxima de transmissão em ambiente rural de 46.62 km.rabalho desenvolvido mostra-nos que as condições mais favoráveis, no que toca a distâncias máximas obtidas para estabelecer a comunicação, serão montar o sistema proposto utilizando QPSK, um canal de 1.4 MHz e cuja frequência de transmissão seja 737 MHz. Assim, consegue-se obter uma distância máxima de transmissão em ambiente rural de 46.62 km

Centralized and Decentralized ML-Enabled Integrated Terrestrial and Non-Terrestrial Networks

Non-terrestrial networks (NTNs) are a critical enabler of the persistent connectivity vision of sixth-generation networks, as they can service areas where terrestrial infrastructure falls short. However, the integration of these networks with the terrestrial network is laden with obstacles. The dynamic nature of NTN communication scenarios and numerous variables render conventional model-based solutions computationally costly and impracticable for resource allocation, parameter optimization, and other problems. Machine learning (ML)-based solutions, thus, can perform a pivotal role due to their inherent ability to uncover the hidden patterns in time-varying, multi-dimensional data with superior performance and less complexity. Centralized ML (CML) and decentralized ML (DML), named so based on the distribution of the data and computational load, are two classes of ML that are being studied as solutions for the various complications of terrestrial and non-terrestrial networks (TNTN) integration. Both have their benefits and drawbacks under different circumstances, and it is integral to choose the appropriate ML approach for each TNTN integration issue. To this end, this paper goes over the TNTN integration architectures as given in the 3rd generation partnership project standard releases, proposing possible scenarios. Then, the capabilities and challenges of CML and DML are explored from the vantage point of these scenarios.Comment: This work was supported in part by the Scientific and Technological Research Council of Turkey (TUBITAK) under Grant No. 5200030 with the cooperation of Vestel and Istanbul Medipol Universit

Proceedings of the Second International Mobile Satellite Conference (IMSC 1990)

Presented here are the proceedings of the Second International Mobile Satellite Conference (IMSC), held June 17-20, 1990 in Ottawa, Canada. Topics covered include future mobile satellite communications concepts, aeronautical applications, modulation and coding, propagation and experimental systems, mobile terminal equipment, network architecture and control, regulatory and policy considerations, vehicle antennas, and speech compression

MIMO relaying UAVs operating in public safety scenarios

Methods to implement communication in natural and humanmade disasters have been widely discussed in the scientific community. Scientists believe that unmanned aerial vehicles (UAVs) relays will play a critical role in 5G public safety communications (PSC) due to their technical superiority. They have several significant advantages: a high degree of mobility, flexibility, exceptional line of sight, and real-time adaptative planning. For instance, cell edge coverage could be extended using relay UAVs. This paper summarizes the sidelink evolution in the 3GPP standardization associated with the usage of the device to device (D2D) techniques that use long term evolution (LTE) communication systems, potential extensions for 5G, and a study on the impact of circular mobility on relay UAVs using the software network simulator 3 (NS3). In this simulation, the transmitted packet percentage was evaluated where the speed of the UAV for users was changed. This paper also examines the multi-input multi-output (MIMO) communication applied to drones and proposes a new trajectory to assist users experiencing unfortunate circumstances. The overall communication is highly dependent on the drone speed and the use of MIMO and suitable antennas may influence overall transmission between users and the UAVs relay. When the UAVs relaying speed was configured at 108 km/h the total transmission rate was reduced to 55% in the group with 6 users allocated to each drone.info:eu-repo/semantics/publishedVersio