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... as a function of the average latency ds to account for the average loss of utility due to the delay. Moreover, with different qualities of data, the different quantized utility functions (such as in =-=[12]-=-) can be used to evaluate the utility of a data packet. The first constraint (Eq. (2)) is the flow conservation. The sum of both the incoming flows of commodity s and the flow of commodity s originate...

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...tion 3.3. Equation (1) denotes the overall quality of all concurrent tasks. Now, the problem is how to quantify the overall quality. Although there is a lot of related work (such as utility functions =-=[24]-=-, [14]) on measuring multimedia quality from the user’s point of view, it is still challenging to quantify the perceptual quality of an adaptive multimedia task and the overall quality of concurrent t...

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...s and the associated achievable multiplexing gains and network utilities. We note that the conceptual aspects of the pricing of video services and the utility of video streaming are discussed in [54]–=-=[60]-=-. Also, a recent study [61] examined the maximization of the utility a given user obtains from receiving a video stream. Our utility study in Section VI differs from [61] in that we consider the utili...

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.... MOS (Mean Opinion Score), automatically from a pre-recorded video clip [10]. Another advantage is that these MOS scores are non-decreasing functions of the bandwidth which makes optimization easier =-=[11]-=-. Thus the entire procedure can be fully automated. Using the other approaches is harder because they are more domain specific and can require interaction with the user to obtain preferences and make ...

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...er control [6] or joint transport and MAC layer design [8]. The problem of rate allocation in particular has been looked at from different perspectives in the domain of wireless networks. Liao et al. =-=[18]-=- look at the max-min fair rate allocation problem for packet based wireless access networks. They achieve their goal by assigning the flows at the access point a concave utility function and applying ...

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...failure probability is above the constraint for θ = (m-1)δ and below the constraint for θ = mδ than θopt = mδ. To determine θopt with respect to optimization goal (ii), we consider a utility function =-=[3]-=- for each of the QoS measures HFP and ACD, which describes how sensitive users are to changes in these measures. The utility function can be interpreted as a mapping of the QoS measure onto a "measure...

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... are concerned with a different fairness definition rather than maximizing aggregate utility: an equilibrium point should result in roughly equal utility values for different applications [64], [25], =-=[42]-=-, [9]. In [64], only mild assumptions on the feasible utility functions are required (non-decreasing, not necessarily continuous, min. bandwidth exists for a given utility value). The drawbacks of thi...

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...re, where each link communicates a supported utility value to sources using that link. Then sources adapt their sending rates according to the minimum of these utility values. Liao et. al. present in =-=[8]-=- a utility-based approach for wireless access networks, where the links maintain a per-flow aggregate to allocate resources utility fair. In [9], we have proposed a new fairness criterion, utility pro...

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...affic, such as file transfer (FTP, HTTP) or electronic mail (SMTP). As shown in [15], some applications, especially real-time applications, have non-concave bandwidth utility functions. Several works =-=[2, 7, 14]-=- argue that it is an application performance measure, i.e. the utility that should be shared fairly among users. To achieve this, we have constructed in [4] a special class of concave functions, i.e. ...