WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466)
We describe a mobile call admission control algorithm (M-CAC) for mobile multimedia terminals roa... more We describe a mobile call admission control algorithm (M-CAC) for mobile multimedia terminals roaming within coverage areas consisting of multiple microcells. The method targets consistent soft-QoS for admitted connections with high utilization of radio resources, exploiting both temporal and spatial statistical multiplexing. We compare the performance of M-CAC to the performance of the default algorithm (all calls are accepted, provided there is enough bandwidth in the originating microcell). Results of our simulations demonstrate that a reasonably good connection-level soft-QoS can be achieved with moderate increase of cost of connections (determined by efficiency of bandwidth utilization).
This paper presents a medium access level VBR bandwidth allocation scheme for wireless ATM (WATM)... more This paper presents a medium access level VBR bandwidth allocation scheme for wireless ATM (WATM) networks. After introducing a wireless ATM system model and the associated dynamic TDMA/TDD medium access control (MAC) scheme, an algorithm for VBR slot allocation is proposed. The algorithm combines information from User Parameter Control (UPC) at the call admission control (CAC) level with rapid MAC level estimates of the requirements for each VBR virtual circuit (VC). The method described is applicable to both conventional VBR and recently proposed VBR+ in which UPC parameters are dynamically renegotiated as source bit rate requirements vary. Simulation experiments using statistically multiplexed MPEG-1 video are carried out for a typical 25Mbps dynamic TDMA/TDD wireless ATM access link scenario. Experimental results show that, for the VBR video under consideration, the proposed scheme can achieve throughputs in the range of 60–70% while maintaining reasonable QoS.
Abstract A dynamic framework for QoS control of video in distributed multimedia applications is p... more Abstract A dynamic framework for QoS control of video in distributed multimedia applications is presented. The framework allows flexible and efficient video delivery with application-level QoS support. Key components of the framework are client QoS renegotiation, server ...
A new service class, called VBR + [20], has been proposed for multimedia applications on ATM netw... more A new service class, called VBR + [20], has been proposed for multimedia applications on ATM networks. VBR + extends the functionality of the traditional VBR service with the added capability of dynamic resource renegotiation. It makes the specification and modification of the usage parameter controls flexible, and potentially can increase the network resource utilization through statistical multiplexing. These advantages come at the expense of a more complex connection admission controller which should be designed to handle bandwidth renegotiation efficiently. In this paper a connection admission controller for VBR + service class is proposed. We identify the desirable features of a VBR + connection admission controller, and present a novel one that can achieve them through (1) dynamic resource partitioning, and (2) dynamic resource redistribution among active connections. Simulation results showing the performance of the controller using a number of actual video traces are pr...
Proceedings. IEEE INFOCOM '98, the Conference on Computer Communications. Seventeenth Annual Joint Conference of the IEEE Computer and Communications Societies. Gateway to the 21st Century (Cat. No.98CH36169)
A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM netwo... more A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM networks. VBR+ extends the functionality of the traditional VBR service with the added capabil- ity of dynamic resource renegotiation. It makes the specification and modification of the usage parame- ter controls flexible, and potentially can increase the network resource utilization through statistical multi- plexing. These
A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM netwo... more A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM networks. VBR+ extends the functionality of the traditional VBR service with the added capabil- ity of dynamic resource renegotiation. It makes the specification and modification of the usage parame- ter controls flexible, and potentially can increase the network resource utilization through statistical multi- plexing. These
Proceedings 1999 IEEE Workshop on Internet Applications (Cat. No.PR00197), 1999
... Web caching framework: analytical models and beyond Zhang, J. Izmailov, R. Reininger, D. Ott,... more ... Web caching framework: analytical models and beyond Zhang, J. Izmailov, R. Reininger, D. Ott, M. C&C Res. Lab., NEC Res. Inst., Princeton, NJ ; This paper appears in: Internet Applications, 1999. ... Abstract Many Web caching algorithms have been proposed in recent years. ...
Proceedings of ICC '93 - IEEE International Conference on Communications, 1993
The authors present the bit-rate characteristics of variable bit-rate (VBR) MPEG-1 compatible vid... more The authors present the bit-rate characteristics of variable bit-rate (VBR) MPEG-1 compatible video intended for asynchronous transfer mode (ATM) network applications. The VBR coding mode for MPEG video is of special interest in teleconferencing and workstation multimedia applications requiring constant image quality, low delay, and/or integrated multimedia transport. Simulation data are provided for a 5-10 Mbps CCIR601 VBR MPEG encoder appropriate for standard-quality TV broadcasting or multimedia applications. The results presented include bit-rate traces and signal-to-noise ratio for typical test sequences, along with summary bit-rate statistics. The performance of frame-based peak rate control as a traffic shaping method is studied. Signal-to-noise ratio obtained with VBR and constant bit-rate coding modes operating at the same average bit-rate is also given for purposes of comparison.<<ETX>>
Proceedings IEEE International Conference on Communications ICC '95, 1995
This paper describes approaches for shaping and smoothing traffic from VBR MPEG video encoders an... more This paper describes approaches for shaping and smoothing traffic from VBR MPEG video encoders and interfacing to ATM networks, by introducing delay and rate buffering between the video encoding and decoding processes, and by flow controlling the data rate out of the encoder buffer into the network. Three algorithms for flow control are defined and compared in terms of their resulting traffic profile. The performance of these algorithms in the presence of a leaky bucket ATM network access controller is studied. The relationship between the leaky bucket algorithm parameters and VBR MPEG encoder parameters is discussed. It is shown that significant gains in performance can be obtained by appropriate selection of traffic smoothing algorithms at the output of a VBR MPEG encoder
Proceedings of the fourth ACM international conference on Multimedia - MULTIMEDIA '96, 1996
Maximilian Ott, Daniel Reiningec Wenjun Luo C&amp;C Research Laboratories, NEC USA, Inc. 4 In... more Maximilian Ott, Daniel Reiningec Wenjun Luo C&amp;C Research Laboratories, NEC USA, Inc. 4 Independence Way Princeton, NJ 08540 USA +1 -609-951-2469 max @ccrl.nj .nec.com ... ABSTRACT This paper introduces an adaptive and scalable framework to program multimedia ...
WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466)
We describe a mobile call admission control algorithm (M-CAC) for mobile multimedia terminals roa... more We describe a mobile call admission control algorithm (M-CAC) for mobile multimedia terminals roaming within coverage areas consisting of multiple microcells. The method targets consistent soft-QoS for admitted connections with high utilization of radio resources, exploiting both temporal and spatial statistical multiplexing. We compare the performance of M-CAC to the performance of the default algorithm (all calls are accepted, provided there is enough bandwidth in the originating microcell). Results of our simulations demonstrate that a reasonably good connection-level soft-QoS can be achieved with moderate increase of cost of connections (determined by efficiency of bandwidth utilization).
This paper presents a medium access level VBR bandwidth allocation scheme for wireless ATM (WATM)... more This paper presents a medium access level VBR bandwidth allocation scheme for wireless ATM (WATM) networks. After introducing a wireless ATM system model and the associated dynamic TDMA/TDD medium access control (MAC) scheme, an algorithm for VBR slot allocation is proposed. The algorithm combines information from User Parameter Control (UPC) at the call admission control (CAC) level with rapid MAC level estimates of the requirements for each VBR virtual circuit (VC). The method described is applicable to both conventional VBR and recently proposed VBR+ in which UPC parameters are dynamically renegotiated as source bit rate requirements vary. Simulation experiments using statistically multiplexed MPEG-1 video are carried out for a typical 25Mbps dynamic TDMA/TDD wireless ATM access link scenario. Experimental results show that, for the VBR video under consideration, the proposed scheme can achieve throughputs in the range of 60–70% while maintaining reasonable QoS.
Abstract A dynamic framework for QoS control of video in distributed multimedia applications is p... more Abstract A dynamic framework for QoS control of video in distributed multimedia applications is presented. The framework allows flexible and efficient video delivery with application-level QoS support. Key components of the framework are client QoS renegotiation, server ...
A new service class, called VBR + [20], has been proposed for multimedia applications on ATM netw... more A new service class, called VBR + [20], has been proposed for multimedia applications on ATM networks. VBR + extends the functionality of the traditional VBR service with the added capability of dynamic resource renegotiation. It makes the specification and modification of the usage parameter controls flexible, and potentially can increase the network resource utilization through statistical multiplexing. These advantages come at the expense of a more complex connection admission controller which should be designed to handle bandwidth renegotiation efficiently. In this paper a connection admission controller for VBR + service class is proposed. We identify the desirable features of a VBR + connection admission controller, and present a novel one that can achieve them through (1) dynamic resource partitioning, and (2) dynamic resource redistribution among active connections. Simulation results showing the performance of the controller using a number of actual video traces are pr...
Proceedings. IEEE INFOCOM '98, the Conference on Computer Communications. Seventeenth Annual Joint Conference of the IEEE Computer and Communications Societies. Gateway to the 21st Century (Cat. No.98CH36169)
A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM netwo... more A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM networks. VBR+ extends the functionality of the traditional VBR service with the added capabil- ity of dynamic resource renegotiation. It makes the specification and modification of the usage parame- ter controls flexible, and potentially can increase the network resource utilization through statistical multi- plexing. These
A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM netwo... more A new service class, called VBR+ (20), has been proposed for multimedia applications on ATM networks. VBR+ extends the functionality of the traditional VBR service with the added capabil- ity of dynamic resource renegotiation. It makes the specification and modification of the usage parame- ter controls flexible, and potentially can increase the network resource utilization through statistical multi- plexing. These
Proceedings 1999 IEEE Workshop on Internet Applications (Cat. No.PR00197), 1999
... Web caching framework: analytical models and beyond Zhang, J. Izmailov, R. Reininger, D. Ott,... more ... Web caching framework: analytical models and beyond Zhang, J. Izmailov, R. Reininger, D. Ott, M. C&C Res. Lab., NEC Res. Inst., Princeton, NJ ; This paper appears in: Internet Applications, 1999. ... Abstract Many Web caching algorithms have been proposed in recent years. ...
Proceedings of ICC '93 - IEEE International Conference on Communications, 1993
The authors present the bit-rate characteristics of variable bit-rate (VBR) MPEG-1 compatible vid... more The authors present the bit-rate characteristics of variable bit-rate (VBR) MPEG-1 compatible video intended for asynchronous transfer mode (ATM) network applications. The VBR coding mode for MPEG video is of special interest in teleconferencing and workstation multimedia applications requiring constant image quality, low delay, and/or integrated multimedia transport. Simulation data are provided for a 5-10 Mbps CCIR601 VBR MPEG encoder appropriate for standard-quality TV broadcasting or multimedia applications. The results presented include bit-rate traces and signal-to-noise ratio for typical test sequences, along with summary bit-rate statistics. The performance of frame-based peak rate control as a traffic shaping method is studied. Signal-to-noise ratio obtained with VBR and constant bit-rate coding modes operating at the same average bit-rate is also given for purposes of comparison.<<ETX>>
Proceedings IEEE International Conference on Communications ICC '95, 1995
This paper describes approaches for shaping and smoothing traffic from VBR MPEG video encoders an... more This paper describes approaches for shaping and smoothing traffic from VBR MPEG video encoders and interfacing to ATM networks, by introducing delay and rate buffering between the video encoding and decoding processes, and by flow controlling the data rate out of the encoder buffer into the network. Three algorithms for flow control are defined and compared in terms of their resulting traffic profile. The performance of these algorithms in the presence of a leaky bucket ATM network access controller is studied. The relationship between the leaky bucket algorithm parameters and VBR MPEG encoder parameters is discussed. It is shown that significant gains in performance can be obtained by appropriate selection of traffic smoothing algorithms at the output of a VBR MPEG encoder
Proceedings of the fourth ACM international conference on Multimedia - MULTIMEDIA '96, 1996
Maximilian Ott, Daniel Reiningec Wenjun Luo C&amp;C Research Laboratories, NEC USA, Inc. 4 In... more Maximilian Ott, Daniel Reiningec Wenjun Luo C&amp;C Research Laboratories, NEC USA, Inc. 4 Independence Way Princeton, NJ 08540 USA +1 -609-951-2469 max @ccrl.nj .nec.com ... ABSTRACT This paper introduces an adaptive and scalable framework to program multimedia ...
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