Location Aware Opportunistic Bandwidth Sharing between Static and Mobile Users with Stochastic Learning in Cellular Networks

Arpan Chattopadhyay 1 Bartłomiej Błaszczyszyn 1 Eitan Altman 2, 3, 4
1 DYOGENE - Dynamics of Geometric Networks
DI-ENS - Département d'informatique de l'École normale supérieure, CNRS - Centre National de la Recherche Scientifique : UMR 8548, Inria de Paris
2 NEO - Network Engineering and Operations
CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : We consider location-dependent opportunistic bandwidth sharing between static and mobile downlink users in a cellular network. Each cell has some fixed number of static users. Mobile users enter the cell, move inside the cell for some time and then leave the cell. In order to provide higher data rate to mobile users, we propose to provide higher bandwidth to the mobile users at favourable times and locations, and provide higher bandwidth to the static users in other times. We formulate the problem as a long run average reward Markov decision process (MDP) where the per-step reward is a linear combination of instantaneous data volumes received by static and mobile users, and find the optimal policy. The transition structure of this MDP is not known in general. To alleviate this issue, we propose a learning algorithm based on single timescale stochastic approximation. Also, noting that the unconstrained MDP can be used to solve a constrained problem, we provide a learning algorithm based on multi-timescale stochastic approximation. The results are extended to address the issue of fair bandwidth sharing between the two classes of users. Numerical results demonstrate performance improvement by our scheme, and also the trade-off between performance gain and fairness.
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https://hal.inria.fr/hal-01401007
Contributor : Bartlomiej Blaszczyszyn <>
Submitted on : Tuesday, November 22, 2016 - 5:57:02 PM
Last modification on : Saturday, March 23, 2019 - 1:22:48 AM

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  • HAL Id : hal-01401007, version 1
  • ARXIV : 1608.04260

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Arpan Chattopadhyay, Bartłomiej Błaszczyszyn, Eitan Altman. Location Aware Opportunistic Bandwidth Sharing between Static and Mobile Users with Stochastic Learning in Cellular Networks. IEEE Transactions on Mobile Computing, Institute of Electrical and Electronics Engineers, In press. ⟨hal-01401007⟩

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