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Low complexity QoE-aware bandwidth allocation for wireless content delivery

Bandwidth allocation in spectrum-congested wire- less content delivery networks should be performed based on the user's Quality of Experience (QoE). The relationship between QoE and network QoS is context- and user-dependent. We show that modeling the user's QoE introduces additional complexity to the bandwidth allocation problem. While recent research has proposed various ways in which complexity can be reduced, we have observed that the optimality (w.r.t. QoE) of the system is also reduced along with complexity. In this paper, the tradeoff between complexity and optimality is investigated and methods to control the tradeoff are proposed. A bandwidth allocation scheme for three different system objectives, including fairness, is formulated.