Achieving Quality of Service (QoS) in Mobile Adhoc Networks (MANETs) has been a research topic in the last years. A few papers, however deal with resource reservation, and a very small fraction of them study the impact of mobility. In this paper we describe a QoS reservation mechanism for Multirate MANETs that allows bandwidth allocation on a per flow basis. By multirate we refer to those networks where wireless nodes are able to dynamically switch among several link rates. We show that, using periodic refreshment of ongoing QoS reservations, our scheme is adaptive to network topology changes due to node mobility.
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