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 23 for “"Heterogeneous wireless networks"”.
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Scaling laws for heterogeneous wireless networks
… the problem of determining achievable rates in heterogeneous wireless networks. We analyze the impact of location, traffic, and service heterogeneity. Consider a wireless network with n nodes located in a square area of size n communicating with each other over Gaussian fading channels. Location …
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Adaptive scalable protocols for heterogeneous wireless networks
… the impact of collisions and interference in heterogeneous wireless networks and propose simple scalable and lightweight protocols that use these models to adapt to network conditions thus increasing efficiency, decreasing energy consumption and prolonging network lifetime. The contributions …
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Network access selection in heterogeneous wireless networks
In heterogeneous wireless networks (HWNs), both single-homed and multi-homed terminals are supported to provide connectivity to users. A multiservice single-homed multi-mode terminal can support multiple types of services, such as voice call, file download and video streaming simultaneously on any …
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Joint radio resource management in heterogeneous wireless networks
The complementary nature of wireless access technologies has resulted in the concept of the integration of overlaid wireless access networks to create a robust and ubiquitous system called heterogeneous wireless networks. In such a system, any mobile user running any application can connect to any …
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Dealing with Uncertainty and Conflicting Information in Heterogeneous Wireless Networks
… multiple user constraints with uncertainty in a heterogeneous wireless network (HWN), while under imprecise and dynamic network conditions. We start by determining the impact of the partial network knowledge on the optimal solution. We introduce a Dynamic Programming (DP) solution approach to the …
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Efficient radio resource management for future generation heterogeneous wireless networks
The heterogeneous deployment of small cells (e.g., femtocells) in the coverage area of the traditional macrocells is a cost-efficient solution to provide network capacity, indoor coverage and green communications towards sustainable environments in the future fifth generation (5G) wireless …
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Effective Scheduling Algorithms for Cross-Interference Mitigation in Heterogeneous Wireless Networks
Wireless networks are making life easier, smarter and more convenient. However, the well-known Carrier-sense multiple access with collision avoidance (CSMA/CA) mechanism is powerless when dealing with Cross-Technology Interference (CTI) between Wi-Fi and Low-Rate Wireless Personal Area Network …
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Congestion control in multi-serviced heterogeneous wireless networks using dynamic pricing
… research has addressed congestion control in the heterogeneous wireless network (HWN) by developing a dynamic pricing scheme that efficiently incentivises users to utilize radio resources. The proposed Collaborative Dynamic Pricing Scheme (CDPS), which identifies the users and operators’ …
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A network-based coordination design for seamless handover between heterogeneous wireless networks
The rapid growth of mobile and wireless communication over the last few years has spawned many different wireless networks. These heterogeneous wireless networks are envisioned to interwork over an IP-based infrastructure to realize ubiquitous network service provisioning for mobile users. …
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Media independent handovers : network selection for mobile IP nodes in heterogeneous wireless networks
In Next Generation Networks (NGN), also known as 4G, Beyond 3G, Converged, Integrated and Interworked Network, user node mobility in wireless and wired environments will seamlessly cross disparate network boundaries. The effort to offer ubiquitous computing, providing access to services anywhere …
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A source-destination based dynamic pricing scheme to optimize resource utilization in heterogeneous wireless networks
Mobile wireless resources demand is rapidly growing due to the proliferation of bandwidth-hungry mobile devices and applications. This has resulted in congestion in mobile wireless networks (MWN) especially during the peak hours when user traffic can be as high as tenfold the average traffic. …
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Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks
Next generation wireless network (NGWN) will be heterogeneous where different radio access technologies (RATs) coexist. This coexistence of different RATs necessitates joint radio resource management (JRRM) for enhanced QoS provisioning and efficient radio resource utilization. Joint call admission …
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Using hypergraph theory to model coexistence management and coordinated spectrum allocation for heterogeneous wireless networks operating in shared spectrum
… Radio Frequency (RF) spectrum are used to convey wireless transmissions from one radio antenna to another. Spectrum utilisation factor, which refers to how readily a given spectrum can be reused across space and time while maintaining an acceptable level of transmission errors, is used to measure …
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Context-aware handoff support for wireless access networks
The phenomenal emergence of several heterogeneous wireless networks and technologies has allowed users to have access to IP services anywhere, at anytime, from any network and with whatever terminal they use. This computing platform has been driven by the rapid evolution of mobile devices that are …
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A cross-layer mobility management framework for next-generation wireless roaming
… aims to be scalable and reliable for all-IP heterogeneous wireless networks whilst conforming to 4G service requirements.
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Fundamental Impacts Of Delay And Deadline On Communications Over Wireless Networks
Consumer demand for wireless networks has experienced an exponential increase in recent years, and such trend is expected to continue in the coming years. Therefore, there is a pressing need for more effective communication schemes to be able to cope with the explosive growth in the wireless …
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An intelligent call admission control algorithm for load balancing in 5G-satellite networks
Cellular networks are projected to deal with an immense rise in data traffic, as well as an enormous and diverse device, plus advanced use cases, in the nearest future; hence, future 5G networks are being developed to consist of not only 5G but also different RATs integrated. In addition to 5G, the …
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On Programmable Control and Optimization for Multi-Hop Wireless Networks
… achieving good performance for a multi-hop wireless network is known to be difficult. The main approach to control the operation of such a network relies on a distributed paradigm, assuming that a centralized approach is not feasible. Relying on a distributed paradigm could be justified at …
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Load balancing in heterogeneous wireless communications networks. Optimized load aware vertical handovers in satellite-terrestrial hybrid networks incorporating IEEE 802.21 media independent handover and cognitive algorithms.
Heterogeneous wireless networking technologies such as satellite, UMTS, WiMax and WLAN are being used to provide network access for both voice and data services. In big cities, the densely populated areas like town centres, shopping centres and train stations may have coverage of multiple wireless …
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A game-theoretic approach to the security of emerging cognitive radio and small cell networks
… that arise in the security of some emerging wireless technologies. First, we address the problem of secure communication between secondary users (SUs) and their serving base station in the presence of multiple eavesdroppers and multiple primary users (PUs) in cognitive radio networks. We …
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