Statistical QoS provisionings for wireless unicast/multicast of multi-layer video streams

Du, Qinghe; Zhang, Xi

doi:10.1109/jsac.2010.100413

Cited by 86 publications

(38 citation statements)

References 22 publications

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“…Sub-optimality will occur when there is a duality gap. Because direct solution of (1) is computationally intractable, to quantify the amount of sub-optimality, we calculate an upper bound (denoted in Figure 3 as Upperbound) by substituting the solution of DIS NC into (4). We see that at low powers there is a significant performance gap between DIS NC and the upper bound.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Despite the common use of PSNR to rate video quality, allocating network resources subject to a long term rate constraint does not reflect the group of pictures structure of the video decoder, and thus may not maximize video quality. As a consequence, some researchers have proposed replacing long term average rate constraints with some type of delay deadline, see e.g., [4] which minimizes wireless resource usage subject to statistical delay and loss constraints, [5] which maximizes concave utility subject to delay constraints, [6] which minimizes the expected end-to-end distortion subject to delay constraints, and [7] which minimizes the error propagation of a group of pictures subject to delay constraints. However, none of these articles use sigmoid utility functions.…”

Section: Utility Modelmentioning

confidence: 99%

“…Network resource allocation should thus be cognizant of this structure. Some researchers have proposed that resource allocation should satisfy some type of delay deadline, e.g., delay constraint [4][5][6][7]. However, none of these articles use sigmoid utility functions.…”

Section: Introductionmentioning

confidence: 99%

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Power and rate allocation for video conferencing in cellular networks

Yang

Jordan

2013

J Wireless Com Network

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We consider resource allocation for semi-elastic applications such as video conferencing. We propose to model user utility as a sigmoid function of the average bit rate over multiple time slots. The goal is to maximize the total expected user utility over time through allocation of downlink power and subcarriers in each time slot. We propose resource allocation that considers both the average rate achieved so far and the future expected rate, and show how the future expected rate can be estimated by modeling the probability that a user will be allocated a subcarrier in a future time slot. The algorithm can be implemented in a distributed fashion by an exchange of price and demand amongst users, the network, and an intermediate power allocation module. To reduce the complexity, we also propose a greedy algorithm to maximize incremental utility in the current time slot. The performance is illustrated using numerical results.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Utility Modelmentioning

confidence: 99%

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Power and rate allocation for video conferencing in cellular networks

Yang

Jordan

2013

J Wireless Com Network

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“…The performance evaluation show that the proposed scheme achieves an overall improved video reception quality while maintaining fairness among the heterogeneous receivers. The adaptive scheme in [83] for video unicast/multicast over wireless aims at minimizing the resource consumption while satisfying the diverse QoS requirements. The statistical delay guarantees are modeled in terms of QoS exponent, effective bandwidth/capacity, and delaybound violation probability.…”

Section: Eai Endorsed Transactions Onmentioning

confidence: 99%

User-Centric Energy-Efficient Multimedia Multicast/Broadcast Solutions: A Survey

Singhal¹,

De²

2015

ICST Transactions on Ubiquitous Environments

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Multimedia multicast/broadcast transmissions provide simultaneous access to a common service to the heterogeneous user equipments (UEs) with different device and channel characteristics. One of the major challenges to the service providers is the exponential growth of energy-constrained UEs. In this context, the optimization of multimedia multicast/broadcast transmissions that consider the constraints imposed by the UEs is a major concern of the service providers to ensure high Quality of Experience levels to the customers with diverse constraints. This paper presents an overview of the multimedia multicast/broadcast challenges and open issues, identifies the main factors and the associated constraints that impact the multimedia transmission, and provides a comprehensive classification, comparison, and analysis of the state-of-the-art user-centric, energyefficient multimedia multicast/broadcast approaches.

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“…Du and Zhang [3] proposed an adaptive resource allocation scheme for multilayer video streaming in wireless unicast/multicast services. In the scenario of a single queue conceived for the SU, the maximum throughput of the SU has been investigated in [4] under the interweave paradigm by finding the optimal transmit power of the SU.…”

Section: Introductionmentioning

confidence: 99%

Optimal queue scheduling for hybrid cognitive radio maintaining maximum average service rate under delay constraints

Yang

Hanzo

2012

2012 IEEE Global Communications Conference (GLOBECOM)

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Abstract-As a promising technique of improving the attainable bandwidth efficiency, cognitive radio (CR) has attracted substantial attention from both the academic and industrial communities. In order to improve the performance of the secondary user (SU), a novel hybrid CR system is introduced, which combines the conventional interweave and underlay paradigms for enhancing the chances of the SU to access the spectrum. Queuing theory is invoked in this paper for analysing the impact of the primary user's (PU) delay tolerance on the performance of the SU. Multiple queues are assumed for the SU engaging in video communication. Besides the Poisson traffic generation, we model a Rayleigh fading channel as a Poisson service process with the aid of the outage probability in the presence of cochannel interferences. Two valuable goals are achieved, namely that of maximizing the average service rate and minimizing the overall average delay of the SU's multiple queues. As our numerical results demonstrate, the overall average delay of the SU becomes 27% and 34% lower than that of the Proportional as well as that of the Round-Robin schemes respectively.

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Statistical QoS provisionings for wireless unicast/multicast of multi-layer video streams

Cited by 86 publications

References 22 publications

Power and rate allocation for video conferencing in cellular networks

Power and rate allocation for video conferencing in cellular networks

User-Centric Energy-Efficient Multimedia Multicast/Broadcast Solutions: A Survey

Optimal queue scheduling for hybrid cognitive radio maintaining maximum average service rate under delay constraints

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