Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Radio Access Network"”.
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On the Optimization of Edge Server Scaling and Placement for Open Radio Access Network (O-RAN) Slicing
Managing edge server resources for O-RAN slicing can be viewed from two complementary perspectives: service providers, who aim to satisfy use-case requirements with minimal leased computing resources, and infrastructure providers, who seek to deploy the minimum number of edge servers across …
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Detection of Denial of Service Attacks on the Open Radio Access Network Intelligent Controller through the E2 Interface
Open Radio Access Networks (Open RANs) enable flexible cellular network deployments by adopting open-source software and white-box hardware to build reference architectures customizable to innovative target use cases. The Open Radio Access Network (O-RAN) Alliance defines specifications introducing …
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Learning and Reconstructing Conflicts in O-RAN
The Open Radio Access Network (O-RAN) architecture enables the deployment of third-party applications on the RAN Intelligent Controllers (RICs). However, the operation of third-party applications in the Near Real-Time RAN Intelligent Controller (Near-RT RIC), known as xApps, may result in …
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Enabling Experimentation and Evaluation of xApp Direct Conflict Detection and Mitigation in Testbed
Telecommunications networks have evolved from enabling human-focused communication to supporting machine-driven interactions such as Internet of Things (IoT) communication. This shift demands increasingly intelligent and adaptive infrastructures, most notably through the virtualization of the Radio …
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A QoS enabling queuing scheme for Fourth Generation wireless access networks
… proposes a scheme to accomplish the task of network selection; this is achieved by enhancing existing QoS provisioning approaches. The scheme models the radio access network as a network of queuing nodes. With the model, the link layer QoS statistics of user traffic in each available path …
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Applications of Artificial Intelligence to Electromagnetism and Indoor Wireless Networks
Fifth-generation (5G) and beyond (B5G) mobile networks are anticipated to revolutionise the structure of the wireless ecosystem and support a set of highly heterogeneous applications, handing a substantially larger volume of mobile traffic with diverse requirements in terms of bandwidth, …
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A Comparative Study of Machine Learning Models for Multivariate NextG Network Traffic Prediction with SLA-based Loss Function
As Next Generation (NextG) networks become more complex, the need to develop a robust, reliable network traffic prediction framework for intelligent network management increases. This study compares the performance of machine learning models in network traffic prediction using a custom …
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Analytical models of IP traffic on UMTS mobile networks
Mobile communications networks are becoming ubiquitous worldwide. Such networks have achieved high rates of success in the area of connected voice traffic. An example of such a network is the Global System Mobile (GSM) cellular network. It is apparent that these networks are also able to offer …
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Propuesta y evaluación del protocolo SIP para el soporte de señalización en la red de acceso radio de sistemas UMTS
… SIP del IETF. Con respecto a la red de acceso radio de estos sistemas, las Especificaciones de la Reléase 99 proponen señalización del tipo SS7 y transporte ATM. Posteriormente la Reléase 5 propone una opción de transporte IP como alternativa al transporte ATM, y debate la utilización de Sff …
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Knowledge Distillation in DMRS CHEST ML to Optimize Radio Performance and Hardware Efficiency
… systems have created high demands on the radio access network (RAN), especially at the physical layer. In 5G New Radio (NR) systems, good channel estimation is crucial for demodulating uplink signals like those sent over the Physical Uplink Shared Channel (PUSCH). Demodulation Reference …
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User-Centric resource allocation through a power-efficient jamming-proof RAN on top of a multi-tenant backhaul
… communications have made allocation of network resources an issue of extreme importance. The problem is further exacerbated if we consider that, while the number of deployed devices is massive, the amount of network resources is still limited. In this thesis, we aim at providing a …
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A Network System Level Simulator for Investigating the Interworking of Wireless LAN and 3G Mobile Systems
… for 2 Mbps indoor capacities. The WLAN access point can be enhanced to either incorporate or supplant the transmission and packet data capabilities in the cellular network. This research used OPNET™ to design, implement, and test a network system level simulation environment to allow …
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Reinforcement Learning assisted Adaptive difficulty of Proof of Work (PoW) in Blockchain-enabled Federated Learning
… also includes additional contributions in Open Radio Access Network (O-RAN) and smart cities. The proposed research has significant implications for achieving fairness and efficiency in blockchain mining in consortium and private blockchains. By leveraging reinforcement learning techniques and …
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Network-Aware Resource Management for Mobile Cloud
… computing and communication resources in Cloud Radio Access Network (C-RAN) environment. The gathered monitoring information in the controller is used when making resource allocation/management decisions. A unified protocol has been proposed, which utilises the same packet format for mobile task …
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Radio Resource Management Optimization For Next Generation Wireless Networks
… volume. Despite the continuous progress in the radio-access technologies to cope with that expansion, many challenges still remain that need to be addressed by both the research and industrial sectors. One of the many remaining challenges is the efficient allocation and management of wireless …
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Distributed Cognitive RAT Selection in 5G Heterogeneous Networks: A Machine Learning Approach
The leading role of the HetNet (Heterogeneous Networks) strategy as the key Radio Access Network (RAN) architecture for future 5G networks poses serious challenges to the current cell selection mechanisms used in cellular networks. The max-SINR algorithm, although effective historically for …
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Downlink Transmission and Caching Strategies for Backhaul-Limited Cloud Radio Access Networks
This thesis considers a downlink cloud radio access network (C-RAN) where all the base stations (BSs) are connected to a central processor (CP) via capacity-limited backhaul links. Two fundamental and different downlink transmission strategies are studied, namely the data-sharing strategy and the …
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AI-Enabled and Integrated Sensing-Based Beam Management Strategies in Open RAN
… 5th Generation (5G) and Beyond 5G (B5G) mobile networks. Recent research has sought to optimize beam management in modern Radio Access Network (RAN) architectures, where open, virtualized, disaggregated and multi-vendor environments are considered, and management platforms allow the use of …
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Wireless systems for the fourth generation
Today, third generation networks are consolidated realities, and user expectations on new applications and services are becoming higher and higher. Therefore, new systems and technologies are necessary to move towards the market needs and the user requirements. This has driven the development of …
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High Capacity VCSEL Array Based Optical Wireless Links
… demand for indoor data traffic. Compared to Radio frequency (RF) wireless systems, OWC systems offer several advantages, including a larger unlicensed bandwidth, immunity against electrical interference and freedom from fading. However, they are affected by background noise caused by natural …
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