Título:
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Preemption and QoS management algorithms for coordinated and uncoordinated base stations
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Autor/a:
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Muñoz Medina, Olga; Pascual Iserte, Antonio; Baquero, Pau; Vidal Manzano, José
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions; Universitat Politècnica de Catalunya. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal |
Abstract:
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This paper addresses the problem of resource allocation and quality
of service (QoS) management in a downlink communication system
where the users are allowed to be attached to and receive data
from one or several cooperating base stations (BSs) under orthogonal
frequency division multiple access (OFDMA). Under the assumption
that only information regarding the link path loss is available
at each transmitter, the problem of power and bandwidth allocation
to minimize transmission power subject to minimum rate (i.e., QoS)
constraints is written as a convex optimization problem. Considering
that the transmission power per BS is limited, the Lagrange
multipliers of the optimization problem are exploited either to ef-
ficiently identify which are the candidates to be preempted whenever
unaffordable power consumption arises, or to relax the target
rate constraints for the ongoing connections. In the second case,
the Lagrange multipliers are used in combination with the NewtonRaphson
algorithm to adjust the QoS of the users in the system according
to the available BS power. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Informàtica::Sistemes d'informació -Quality of service (Computer networks) -Resource allocation -Preemption -QoS management -BS cooperation -Power and bandwidth allocation -Qualitat del servei (Telecomunicació) |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Objeto de conferencia |
Editor:
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Institute of Electrical and Electronics Engineers (IEEE)
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