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      <subfield code="a">Bueno Delgado, Antonio</subfield>
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      <subfield code="a">Fabregat Gesa, Ramon</subfield>
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      <subfield code="a">Vilà Talleda, Pere</subfield>
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      <subfield code="a">Marzo i Lázaro, Josep Lluís</subfield>
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      <subfield code="c">2003</subfield>
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      <subfield code="a">We propose a charging scheme for cost distribution along a multicast tree when cost is the responsibility of the receivers. This scheme focuses on QoS considerations and it does not depend on any specific type of service. The scheme has been designed to be used as a bridge between unicast and multicast services, solving the problem of charging multicast services by means of unicast charging and existing QoS routing mechanisms. We also include a numerical comparison and discussions of the case of non-numerical or relative QoS and on the application to some service examples in order to give a better understanding of the proposal</subfield>
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      <subfield code="a">Ordinadors, Xarxes d'</subfield>
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      <subfield code="a">Ordinadors, Xarxes d' -- Aspectes econòmics</subfield>
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      <subfield code="a">Computer networks -- Economic aspects</subfield>
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      <subfield code="a">On the use of QoS requirements as base of multicast charging</subfield>
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