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This paper presents two novel mechanisms for the OLSR routing protocol, aiming to improve its energy performance in Mobile ah-hoc Networks. Routing protocols over MANET are an important issue and many proposals have been addressed to efficiently manage topology information, to offer network scalability and to prolong network lifetime. However, few papers(More)
In this paper, the problem of finding optimal paths in mobile ad hoc networks is addressed. More specifically, a novel bicriteria optimization model, which allows the energy consumption and the link stability of mobile nodes to be taken into account simultaneously, is presented. In order to evaluate the validity of the proposed model, a greedy approach is(More)
—Energy awareness for computation and protocol management is becoming a crucial factor in the design of protocols and algorithms. On the other hand, in order to support node mobility, scalable routing strategies have been designed and these protocols try to consider the path duration in order to respect some QoS constraints and to reduce the route discovery(More)
—In this paper, a GCAD-CAC (Greedy Choice with Bandwidth Availability aware Defragmentation) algorithm is proposed. It is able to guarantee respect for data flow delay constraints defined by three different traffic classes. To achieve good results, the algorithm tries to accept all the new requests, but when a higher priority request is received, a lower(More)
The IEEE 802.16e is a promising technology that allows to provide wireless broadband services to a great number of mobile users. Considering this interesting scenario enriched by further presence of HAPs (High Altitude Platform) with the role of Base Stations (BSs), we have proposed a comparison between performances of a set of Markov Chain based models(More)