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Resource Management in Satellite Networks part 18

Resource Management in Satellite Networks part 18. 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 | 152 Giovanni Giambene Cristina Parraga Niebla Victor Y. H. Kueh misalignment . These are the reasons why PF is characterized by a higher Ploss_channel value than P-EDF. Moreover the higher the number of UEs the higher the probability to schedule a UE when a transition occurs from GOOD to BAD. In conclusion the simulation results reported here prove that S-HSDPA is feasible provided that suitable scheduling functions and traffic flow prioritization are employed. 5.3.3 Scheduling techniques for broadcast and multicast services in S-UMTS With the increasing use of high-bandwidth applications in 3G mobile systems especially with a large number of users receiving the same high data rate services efficient information distribution is essential. Thus broadcast and multicast are techniques to decrease the amount of transmitted data within the network and to use resources more efficiently. In particular broad-cast multicast is a method for transmitting datagrams from a single source to several destinations. Due to the broadcast nature of the radio channel this method is efficient for sessions sharing the same or even common contents. If the nature of the offered service lends itself to spatial and temporal bundling of the demands into one transmission the benefit of multicast and broadcast is that data are sent just once by the network and transmitted to users located in the same cell over a single common channel without clogging up the air interface with multiple transmissions of the same data as caused by multiple usage of unicast sessions. Due to the broadcast nature and ubiquitous coverage satellite systems may become a very efficient complement to terrestrial mobile networks removing their asymmetric load and providing them with far more point-to-point equivalent capacity for far less investment cost. Design requirements Requirements of broadcast and multicast services delivery and impact on packet scheduler design Even though the broadcast and multicast delivery mode