TAILIEUCHUNG - Resource Management in Satellite Networks part 13

Resource Management in Satellite Networks part 13. This book provides significant knowledge on innovative radio resource management schemes for satellite communication systems that exploit lower layer adaptivity and the knowledge of layer 3 IP QoS support and transport layer behavior. The book integrates competencies considering all the parts of system design: propagation aspects, radio resource management, access protocols, network protocols, transport layer protocols, and more, to cover both broadband and mobile satellite systems | 100 Maria Angeles Vazquez Castro In both PEP types the goal is to shield high-latency or lossy satellite network segments from the rest of the network in a transparent way to applications. A critical issue in PEP is the design of buffers and related management rules and sizes. Interesting proposals envisage the adoption of Active Queue Management AQM at the MAC layer for improving the TCP performance. In AQM when the router determines that the bandwidth is fully utilized packets are dropped even when the queue is not full in order to reduce the data injection rate of the TCP sender 35 . In 36 experimental quantitative performance metrics can be found they are obtained by using and UDP-Lite for the next-generation transport of IP multimedia. A cross-layer technique is proposed that features partial checksum coverage for the packet header allowing the application to signal implicitly the link CRC coverage. The sending end-host implicitly signals . without explicit control messages by using a modified transport header such as UDP-Lite. This work discusses the architectural implications for enhancing performance of a wireless and or satellite environment. Joint optimization of layers involving call admission control Reference 37 presents an overview of high-speed mobile satellite communication systems the technologies adopted or planned for deployments and the challenges. Various physical channel models for characterizing the mobile satellite systems are presented. The most prominent technologies used in the physical layer such as coding and modulation schemes multiple-access techniques diversity combining etc. are discussed in the scenario of satellite systems. What is interesting in our context is the overview of cross-layer design methods employed in satellite systems in particular those that involve joint network and physical layer optimizations or joint MAC and physical layer optimizations. Specifically in the GEO satellite environment different forms of

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