Traffic shaping, bandwidth allocation, and quality assessment for MPEG video distribution over broadband networks

Gringeri, S.; Shuaib, Khaled; Egorov, Roman; Lewis, A.; Khasnabish, Bhumip; Basch, B.

doi:10.1109/65.752648

Cited by 26 publications

(12 citation statements)

References 14 publications

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“…Nevertheless, variable bit-rate encoding of video streams can achieve quality equivalent to that of constant bit-rate encoding while requiring average bit rate that is lower by 40% or more [13,17]. On the other hand, variable bit-rate streams have high variability in their resource requirements, which potentially leads to low utilization of disk and network bandwidth.…”

Section: Introductionmentioning

confidence: 96%

Shared-buffer smoothing of variable bit-rate streams

Anastasiadis

Sevcik

Stumm

2005

Performance Evaluation

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Section: Introductionmentioning

confidence: 96%

Shared-buffer smoothing of variable bit-rate streams

Anastasiadis

Sevcik

Stumm

2005

Performance Evaluation

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“…Variable bit-rate encoding of video streams can achieve quality equivalent to constant bit-rate encoding, while requiring average bit rate that is significantly lower [13,3,7]. Data prefetching techniques have been previously applied in order to reduce bandwidth requirements of variable bit-rate data transfers.…”

Section: Related Workmentioning

confidence: 99%

Lexicographically optimal smoothing for broadband traffic multiplexing

Anastasiadis¹,

Varman²,

Vitter³

et al. 2002

Proceedings of the Twenty-First Annual Symposium on Principles of Distributed Computing - PODC '02

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We investigate the problem of smoothing multiplexed network traffic, when either a streaming server transmits data to multiple clients, or a server accesses data from multiple storage devices or other servers. We introduce efficient algorithms for lexicographically optimally smoothing the aggregate bandwidth requirements over a shared network link. In the data transmission problem, we consider the case in which the clients have different buffer capacities but no bandwidth constraints, or no buffer capacities but different bandwidth constraints. For the data access problem, we handle the general case of a shared buffer capacity and individual network bandwidth constraints. Previous approaches in the literature for the data access problem handled either the case of only a single stream or did not compute the lexicographically optimal schedule.Lexicographically optimal smoothing (lexopt smoothing) has several advantages. By provably minimizing the variance of the required aggregate bandwidth, maximum resource requirements within the network become more predictable, and useful resource utilization increases. ing a network link by multiple users can be improved, and new requests from future clients are more likely to be successfully admitted without the need for frequently rescheduling previously accepted traffic. Efficient resource management at the network edges can better meet quality of service requirements without restricting the scalability of the system.

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“…Thus, there is a fundamental trade-off between CPU impact and network impact. As a first approximation, the OS clock granularity may be increased, but at the cost of inefficiency due to the larger context switching rate-CPU thrashing [4].…”

Section: Enhancing General-purpose Systems With Packet Video Broadcasmentioning

confidence: 99%

“…Traditionally, the research effort has been focused on dedicated video server engineering. Indeed, video transmission with dedicated servers is an area of intensive research, and there is a vast literature concerning admission control [1], traffic models [8], traffic shaping [4] and other video server engineering aspects [6]. Since dedicated servers perform video broadcasting to a large number of users, the challenge is to make efficient use of the available hardware resources (HD, memory, I/O buses) in order to serve as many users as possible and the same applies to the high-speed transport network.…”

Section: Introductionmentioning

confidence: 99%

Packet Video Broadcasting with General-Purpose Operating Systems in an Ethernet

Magaña

Aracil

Villadangos

2004

Multimedia Tools and Applications

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Abstract. Video transmission with general-purpose PCs poses a number of requirements that radically differ from those of high-end dedicated video servers. We analyze the scenario of an Ethernet local area network in which a number of PCs are transmitting video streams, while other TCP/IP applications are also running concurrently. Our findings show that since the operating system clock resolution cannot cope with the transmission timing requirements the following holds: if the video transmission is performed with exact timing accuracy to maintain a constant rate then CPU load grows to 100%, thus blocking the PC for other user applications; on the other hand, if transmission is performed in a bursty manner, i.e. with sleep system calls, then CPU load decreases dramatically but the increased burstiness of the video stream has a negative impact on network performance (for example, capture effect in the Ethernet). Furthermore, the impact of video transmission over the rest of TCP/IP applications running on the same network depends heavily on the packet size. We provide an integrated analysis of operating system and network parameters to achieve video broadcasting while preserving timing requirements and minimizing the impact on other applications.

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Traffic shaping, bandwidth allocation, and quality assessment for MPEG video distribution over broadband networks

Cited by 26 publications

References 14 publications

Shared-buffer smoothing of variable bit-rate streams

Shared-buffer smoothing of variable bit-rate streams

Lexicographically optimal smoothing for broadband traffic multiplexing

Packet Video Broadcasting with General-Purpose Operating Systems in an Ethernet

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