Linear quadratic control of service rate allocation in a satellite network (Articolo in rivista)

Type
Label
  • Linear quadratic control of service rate allocation in a satellite network (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Barsocchi P., Davoli F., Secchi R. (2010)
    Linear quadratic control of service rate allocation in a satellite network
    in IET communications (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Barsocchi P., Davoli F., Secchi R. (literal)
Pagina inizio
  • 1580 (literal)
Pagina fine
  • 1593 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 4 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: IET COMMUNICATIONS, vol. 4 (13) pp. 1580 - 1593. Special Issue: Satellite Systems, Applications and Networking. IEEE, 2010. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ISTI, Pisa (literal)
Titolo
  • Linear quadratic control of service rate allocation in a satellite network (literal)
Abstract
  • The real-time control of multiple queues handling traffic of different nature is getting increasing relevance in both the uplink and downlink of wireless telecommunication networks, characterized by the presence of a central access point. Such is the case of satellite networks, with either on-board processing or double-hop configuration, besides a number of terrestrial local and metropolitan wireless networks. Given a certain amount of available bandwidth, the problem is that of deciding, within a certain time frame, the allocation of bandwidth partitions for each traffic queue, whose packets are awaiting transmission; eventually, this determines the transmission rates to be passed to the scheduler and to the physical layer Adaptive Coding and Modulation (ACM) devices. In a satellite network, where this task is accomplished by a master station, residing at the access point, it is possible to take such decisions by means of a centralized controller, based on real-time instantaneous (in the downstream direction) or delayed (in the upstream) information on the queues' state. The paper derives a control law to be used in this task, by adopting an approach based on optimal Linear Quadratic (LQ) regulation. Both cases of un-delayed and delayed information are considered. The control laws are tested in a geo-stationary satellite scenario of Digital Video Broadcasting - Return Channel via Satellite (DVB-RCS), and the queues are considered at the MAC (Medium Access Control) level. Simulation results under real-traffic traces are also presented, to highlight the effectiveness of the control and to compare alternative solutions. (literal)
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