Cost- and Energy-Aware Multi-Flow Mobile Data Offloading Using Markov Decision Process
Cheng Zhang, Bo Gu, Zhi Liu, Kyoko Yamori, and Yoshiaki Tanaka

TL;DR
This paper addresses multi-flow mobile data offloading by modeling it as a Markov decision process, proposing optimal and heuristic algorithms to improve offloading decisions considering delay, cost, and energy.
Contribution
It extends previous single-flow offloading work to multi-flow scenarios, formulating the problem as an MDP and providing both optimal and heuristic solutions.
Findings
The optimal policy effectively balances delay, cost, and energy consumption.
The heuristic algorithm reduces computational complexity with acceptable performance loss.
Simulations validate the effectiveness of the proposed algorithms.
Abstract
With the rapid increase in demand for mobile data, mobile network operators are trying to expand wireless network capacity by deploying wireless local area network (LAN) hotspots on which they can offload their mobile traffic. However, these network-centric methods usually do not fulfill the interests of mobile users (MUs). Taking into consideration many issues, MUs should be able to decide whether to offload their traffic to a complementary wireless LAN. Our previous work studied single-flow wireless LAN offloading from a MU's perspective by considering delay-tolerance of traffic, monetary cost and energy consumption. In this paper, we study the multi-flow mobile data offloading problem from a MU's perspective in which a MU has multiple applications to download data simultaneously from remote servers, and different applications' data have different deadlines. We formulate the wireless…
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