D. Reininger and R. Izmailov, #Soft quality of service with VBR+ video," in Proceedings of 8th International Workshop on Packet Video#AVSPN97#, #Aberdeen#, September 1997.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....max min allocation while still maintain acceptable flexibility, even with the presence of large number of utility functions. A sample piecewise linear utility function is shown in Figure 4. A similar model was used by Reininger and Izmailov in defining the performance profile of MPEG video streams [15]. In a piecewise linear utility function model, a utility function is defined by k 1 points (x 0 ; y 0 ) x 1 ; y 1 ) x k ; y k ) This representation of utility function allows applications to declare a minimum utility, which is achieved at a minimum bandwidth. Thus the admission ....

D. Reininger and R. Izmailov. Soft Quality-of-Service with VBR+ Video. In Proceedings of 8th International Workshopon Packet Video (AVSPN97), Aberdeen, Scotland, Sept. 1997.

....a user satisfaction index as a function of bandwidth. Consequently, applications can effectively describe its media scaling capability by using utility functions. Utility functions, previously used in economics research, are successfully applied for utility fair network resource allocation [1, 14, 9]. Additionally, subjective utility functions can be efficiently used for (1) bit rate control and (2) dynamic rate shaping (DRS) 12] in network nodes. Utility functions of various video components comprising single application are combined in a media scaling profile. By the video component we ....

....application [15] However, efficiency of utility fair bandwidth allocation depends on (1) actual quality metrics 2 used and (2) feasibility of real time utility function generation. Although previous studies in QoS indicated the importance of utility function as a soft media scaling indicator [1, 14, 9], little attention was given to actual generation of utility function online, especially in the context of subjective video quality. In this paper, we propose a novel system for a real time subjective utility function estimation suitable for future MPEG 4 networking applications. In Section 2, we ....

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D. Reininger and R. Izmailov, "Soft Quality of Service with VBR + Video", Proceedings of International Workshop on Audio-Visual Services over Packet Networks (AVSPN'97), Aberdeen, Scotland, UK, September. 15-16, 1997, pp. 207-211.

....a practical approach to utility generation for video audio content is to measure the distortion given different amount of scaled down bandwidth. Distortion could be measured using subjective metrics such as the 5 level mean opinionscore (MOS) test [7] to construct utility function off line [14], or using objective metrics such as the Signal to Noise Ratio (SNR) whose simplicity allows online utility generation [10] Figure 2 shows an example of utility function generated for an MPEG 1 video trace [10] using an on line method. Each curve is constructed as the envelope of the per frame ....

D. Reininger and R. Izmailov. Soft quality of service with VBR + video. In Proc. Int. Workshop on Audio-Visual Services over Packet Networks, pages 207--211, Aberdeen, Scotland, UK, September 15-16 1997.

....utility price ratio (UPR) under consideration of the individual utility function and the offered tariffs. The result is a recommended service class or the suggestion to use BE service and error control with a specific setting of FEC parameters. 5. 1 Utility Functions Utility functions (see e.g. [ReIz97] and [BoFT98] translate from a given quality of service (e.g. bandwidth, loss) to a degree of satisfaction, or utility. Figure 2 from [ReIz97] shows how the utility of a variable bit rate video application decreases if the actual provided bandwidth falls below the required bandwidth. The ....

....class or the suggestion to use BE service and error control with a specific setting of FEC parameters. 5.1 Utility Functions Utility functions (see e.g. ReIz97] and [BoFT98] translate from a given quality of service (e.g. bandwidth, loss) to a degree of satisfaction, or utility. Figure 2 from [ReIz97] shows how the utility of a variable bit rate video application decreases if the actual provided bandwidth falls below the required bandwidth. The satisfaction index reflects the user observation in a more accurate way than the current standards that are based on a binary (yes no) characterization ....

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D. Reininger and R. Izmailov, Soft Quality of Service with VBR+ Video In Proceedings International Workshop on Audio-Visual Services over Packet Networks, AVSPN '97, Aberdeen, Scotland, September 1997.

....that a mobile device may experience over the air interface. In [1] Lee introduced the application of utility curves in wireless networking. However, no quantitative results were presented to determine the viability of using utility curves in the wireless context. More recently, Reininger [7] adopted utility curves to model the concept of soft QOS in ATM networks. We define a bandwidth utility curve u(x) as a mapping of the available wireless network bandwidth x, into a utility (i.e. quality ) value that represents the level of satisfaction perceived by an application at any time. ....

D. Reininger, R. Izmailov, "Soft Quality of Service with VBR + Video", Proc. Int. Workshop on Audio-Visual Services over Packet Networks, Aberdeen, Scotland, UK, Sept. 15- 16, 1997, pp. 207-211.

....methods. Dynamic resource partition strives to achieve higher resource utilization with excellent media quality through load dependent resource partitioning among new admissions and renegotiation requests. The dynamic resource redistribution uses the concept of softness in video quality [23, 24] to guarantee fairness of resource usage among active connections. We evaluate the performance of the CAC using detailed cell level simulation experiments using several video clips with different degree of burstiness as traffic sources. Real time experiments are used to determine the softness of ....

D. Reininger and R. Izmailov. Soft Quality of Service with VBR + Video. In International Workshop on Audio-Visual Service Over Packet Networks, September 1997.

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D. Reininger and R. Izmailov, #Soft quality of service with VBR+ video," in Proceedings of 8th International Workshop on Packet Video#AVSPN97#, #Aberdeen#, September 1997.

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D. Reininger and R. Izmailov, #Soft quality of service with VBR+ video," in Proceedings of 8th International Workshop on Packet Video#AVSPN97#, #Aberdeen, Scotland#, September 1997.

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D. Reininger and R. Izmailov, "Soft quality of service with VBR+ video," in Proceedings of 8th International Workshop on Packet Video (AVSPN97), (Aberdeen, Scotland), September 1997.

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D. Reininger, R. Izmailov, "Soft Quality of Service with VBR + Video", Proc. of Intl. Workshop on Audio-Visual Services over Packet Networks (AVSPN'97), Aberdeen, Scotland, UK, Sept. 15-16, 1997, pp. 207-211.

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D. Reininger and R. Izmailov, "Soft quality of service with VBR+ video," in Proceedings of 8th International Workshop on Packet Video (AVSPN97), (Aberdeen), September 1997.

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