1,072 research outputs found
Applications of Repeated Games in Wireless Networks: A Survey
A repeated game is an effective tool to model interactions and conflicts for
players aiming to achieve their objectives in a long-term basis. Contrary to
static noncooperative games that model an interaction among players in only one
period, in repeated games, interactions of players repeat for multiple periods;
and thus the players become aware of other players' past behaviors and their
future benefits, and will adapt their behavior accordingly. In wireless
networks, conflicts among wireless nodes can lead to selfish behaviors,
resulting in poor network performances and detrimental individual payoffs. In
this paper, we survey the applications of repeated games in different wireless
networks. The main goal is to demonstrate the use of repeated games to
encourage wireless nodes to cooperate, thereby improving network performances
and avoiding network disruption due to selfish behaviors. Furthermore, various
problems in wireless networks and variations of repeated game models together
with the corresponding solutions are discussed in this survey. Finally, we
outline some open issues and future research directions.Comment: 32 pages, 15 figures, 5 tables, 168 reference
A channel allocation algorithm for OSA-Enabled IEEE 802.11 WLANs
Channel allocation problem is a major challenge in
wireless local area networks (WLANs), especially in dense
deployments of access points (APs) where congestion of the
unlicensed spectrum bands (i.e., ISM bands) could undermine
achieved network performance. This paper analyses the
possibility to alleviate congestion of the ISM band by allowing
some APs to use additional channels located in licensed bands in
an opportunistic manner whenever licensee services (i.e.,
primary users) are not affected. Availability of these additional
channels in licensed bands is assumed not to be the same for all
the APs. Based on this assumption, we formulate the problem for
the channel assignment as a Binary Linear Programming (BLP)
problem, which allows us to obtain an optimal solution despite an
elevated execution time. We also develop a heuristic method
based on building a Minimum Spanning Tree (MST) graph
attending to interference conditions that is able to find nearoptimal
solutions with a shorter execution time. Results are
provided to assess the benefits of such a proposal under different
WLAN deployment situations and primary channel availability
conditions.Postprint (published version
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