Resource Management in Satellite Networks part 20 ppsx

... LEO satellites’ coverage area changes continuously over time, in order to maintain connectivity, end-users must switch from beam to beam and from satellite to satellite, resulting in frequent intra- ... Transmission Scheduling with Resource- Sharing Constraints in Wireless Networks , IEEE Journal on Selected Areas in Communications, Vol. 19, No. 10, pp. 205 3 -206 4, October 20...

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... of multiple links corresponding to all the users that have activated the service in each (multicast) group. The role of the packet scheduler in S-MBMS is not that dominant in determining the system ... such information were available, it would have to be exploited in a complex way due to the point-to-multipoint nature of the services, i.e., the decisions regarding the scheduling of a...

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... guaranteed. In doing this, the effect of fading on the satellite channel is also taken into account. As in other works (see, e.g., [25]), when the fade countermeasure in use is modulation and coding rate ... performance indicator of interest, the In nitesimal Perturbation Analysis (IPA) technique of Cassandras et al. [24] (already mentioned in Chapter 7 in a different scenario) is...

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... efficiency. In the forward link, the introduction of spreading requires the design of a new DVB-S2 receiver. In the return link, each terminal could in principle implement direct spreading within the ... Next-Generation Wireless Systems”, in Proc. of IEEE Wireless Communications and Networking Conference 200 3 (IEEE WCNC 200 3), New Orleans, USA, pp. 1084-1089, March 200 3. [6] The I...

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... decided in September 200 5 to organize the results obtained in a book. With the end of SatNEx activities in March 200 6, the work of this book continued in SatNEx II (IST-027393, 200 6 200 9) in the ... (Chapter 4), the two following parts are conceived according to the ETSI SES/BSM protocol stack, thus distinguishing cross-layer issues involving satellite- dependent layers (Par...

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... entitled “Integrated Space/Terrestrial Mobile Networks . He also contributed to the Resource Management activity of the Working Group 3000 within the RACE Project, called Satellite Integration in the ... (PRMA) protocols suitable for supporting voice and data transmissions in low earth orbit mobile satellite systems. In 1999 he joined the Information Engineering Department of th...

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... Board IBR Information Bit Rate ICMP Internet Control Message Protocol IEEE Institute of Electrical and Electronics Engineers IETF Internet Engineering Task Force IFR Increasing Failure Rate IM Inter-Modulation IMT ... Internet Protocol over Satellite ISDN Integrated Services Digital Network ISI Integral Satcom Initiative ISLs Inter -Satellite Links ISN Interactive Satellite Network ISO/O...

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... (from Earth to satellite to Earth and back) since layer 2 control functions are in the Earth station. In case of GEO regenerating satellites, RTD varies in the range 239-280 ms. In particular, RTD ... system, but the greater the difficulty in acquiring and maintaining synchronism. Time access to the satellite link can be managed either in centralized or in distributed mode. Ce...

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... time-frequency resources (according to an MF-TDMA air interface) to the requesting terminals. The Return Channel Satellite Terminal (RCST) transmission capacity is constrained. According to the standardization, ... Reed-Solomon coding, convolutional interleaver, inner convolutional encoding, puncturing), base-band shaping of impulses, and QPSK modulation. The resulting DVB-S transmissions v...

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... Chapter 1: INTRODUCTION TO SATELLITE COMMUNICATIONS 29 Fig. 1.9: Examples for the use of satellite links in telecommunication networks. interworking, to define a new network architecture and to include ... Multi-spot-beam satellite antenna • Bent-pipe satellite • Terrestrial gateway containing the scheduler (MAC layer) • Direct return link via satellite for channel quality measur...

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