D. Saparilla, K. Ross, and M. Reisslein, "Periodic Broadcasting with VBR-Encoded Video," in Proc. of INFOCOM'99, 1999.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....enables a server to send several streams of video data for reception by a large number of clients, thereby significantly reducing the amount of resources required. A number of pioneering studies have investigated such architectures, such as batching [1 3] patching [4 7] and periodic broadcasting [8 11]. Received May 15, 2002; accepted July 25, 2002. Communicated by Biing Feng Wang, Stephan Olariu and Gen Huey Chen. A preliminary version of the paper was presented at the 2002 International Conference on Parallel and Distributed Systems, Chungli, Taiwan. A common assumption among these ....

....disk utilization is increased. Their simulation results show that up to 81 more streams can be served using this prefetch technique. The tradeoffs are increased server buffer requirement and additional offline preprocessing of the video data. A third approach proposed by Saparilla et al. [8] schedules video data transmission using a priority scheduler (Join the Shortest Queue) In particular, the server schedules video data transmission according to the demand for data of each channel. A channel with the greatest demand for data (the clients listening to this channel are most likely ....

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D. Saparilla, K. W. Ross, and M. Reisslein, "Periodic broadcasting with VBR-encoded video" in Proceedings of IEEE Infocom 1999, 1999, pp. 464-471.

....When transmitting the pre encoded data over a CBR channel (or even a VBR channel) a decoder buffer is usually required to smooth out the variations in rate of the video data (i. e, the decoder receives a variable number of frames per second, but decodes frames at a constant rate) Some studies [14, 15, 16] show different approaches to cope with the decoder buffer underflow and or overflow (note, that decoder buffer underflow is the most significant problem since it will produce jitter in the display of video frames) caused by the VBR video data, and possibly, by network congestion. Most strategies ....

D. Saparilla, K.W. Ross, and M. Reisslein, "Periodic broadcasting with vbr-encoded video," in IEEE INFOCOMM, 1999.

....enables a server to send a few streams of video data for reception by a large number of clients, thereby significantly reducing the amount of resources required. A number of pioneering studies have investigated such architectures, such as batching [1 3] patching [4 7] and periodic broadcasting [8 11]. A common assumption with these multicast VoD architectures is that the videos are constant bit rate (CBR) encoded. This significantly simplifies system design and analysis, and enables one to study the system performance independent from video encoding variations. Nevertheless, the visual ....

....disk utilization is increased. Their simulation results show that up to 81 more streams can be served using this prefetch technique. The tradeoffs are increased server buffer requirement and additional offline preprocessing of the video data. A third approach proposed by Saparilla et al. [8], schedules video data transmission using a priority scheduler (the Join the Shortest Queue) In particular, the server schedules video data transmission according to the demand of data of each channel. A channel with the greatest demand of data (the clients listening to this channel is most ....

[Article contains additional citation context not shown here]

D. Saparilla, K.W. Ross, and M. Reisslein, "Periodic Broadcasting with VBR-Encoded Video" Proc. IEEE Infocom 1999.

....quickly deplete server resources. Recent work has focussed on leveraging the multipoint data distribution facility of the Internet called multicast [20] to reduce the server and network load [18] 33] 1] 2] 76] 11] 38] 31] 39] 40] 42] 54] 9] 25] 32] 37] 46] 55] [64], 67] 26] 27] For example, a simple scheme is to aggregate client requests for the same media file that are separated by a small time interval into one group, and serve them by a single multicast stream [18] As mentioned above, a requirement of many scalable streaming protocols is the ....

....limiting the merging capability of these schemes. Significant performance gains can be achieved by leveraging additional available client bandwidth and storage space, as demonstrated by the recently proposed periodic broadcast protocols [76] 1] 38] 39] 31] 42] 54] 37] 46] 55] [64], patching [11] 9] 40] 32] 67] and hierarchical multicast stream merging [25] 26] 27] A. Periodic Broadcasts Periodic broadcast protocols divide a media object into K segments with relative lengths l 1 ; l 2 ; l K . Each segment is periodically broadcast according to a ....

D. Saparilla, K. Ross, and M. Reisslein. Periodic Broadcasting with VBR-Encoded Video. In Proc. IEEE Infocom '99, New York, NY, March 1999.

....segment allows it to be broadcast more frequently to ensure a good service latency. The uniform sizes of the larger segments enable the client to download them serially at the playback rate, reducing the storage requirement at the client. Later techniques such as Fast Broadcast [13] and variants [14,15], Dynamic Skyscraper Broadcast [16] Greedy Disk Conserving Bandwidth [17,18] Client Centric Approach [19] and Mayan Temple Broadcast [20] employ different functions to determine segment sizes. These techniques all improve on latency over SkB with the expense of more client receiving bandwidth ....

D. Saparilla, K. Ross, and M. Reisslein. Periodic broadcasting with vbr encoded video. In Proc. of IEEE Infocorn'99, pages 464-471, 1999.

....Today s multicast protocols [1] are not optimized for video applications. Particularly, they cannot deliver video on demand (VOD) This restriction has led to a large body of recent work looking for remedies at the application level. They are Periodic Broadcasting (PB) 2] 3] 4] [5], 6] 7] 8] Batching ( 9] 10] Chaining [11] Piggybacking [12] and Patching ( 13] 14] A network level scheme was presented in [15] which caches data at routers in the network to service subsequent requests. In a sense, cached data act as a huge virtual server to all users, ....

D. Saparilla, K. W. Ross, and M. Reisslein, "Periodic broadcasting with vbr-encoded video," in Proc. of IEEE INFOCOM '99, 1999.

....HB based protocols. All the above protocols are based on the assumption that the videos are Constant Bit Rate (CBR) encoded. In the real world there are many videos with Variable Bit Rate (VBR) Some more protocols are proposed to address this problem. Saparilla et al. proposed a protocol in [12] (we will call it VBR B) using the segmentation scheme in FB and applied the techniques of GoP smoothing, server buffering and client prefetching to improve its performance. Another protocol, the Trace Adaptive Fragmentation (TAF) proposed in [13] is an improvement of VBR B to take into account ....

D. Saparilla, K. Ross, M. Reisslein. Periodic broadcasting with VBRencoded video. In Proc. of IEEE Infocom '99, pp 464-471.

....derived error control schemes, namely ARQ, pure FEC, hybrid FEC ARQ, hybrid FEC ARQ with priority dependent redundancy, and adaptive hybrid FEC ARQ with priority dependent redundancy. To evaluate the performance of these schemes, we use the dummy MPEG 2 traces of the movie Terminator 2 from [7]. The video has a frame rate of 24 frames per second, encoded with the pattern IBBPBBPBBPBB . The traces contain 40,000 frames with an average bit rate of 2 Mbps. In applying redundancy, each frame is segmented into 500 byte packets. The fragmented packets are grouped into blocks of k ( 10) ....

D. Saparilla, K.W. Ross and M. Reisslein. Periodic Broadcasting with VBR-Encoded Video. Proc. of IEEE INFOCOM, New York, NY, March 1999, pp. 464-471. Proceedings of IEEE Tenth Workshop on Local and Metropolitan Area Networks (LANMAN'99), Sydney, Australia 21-24 November 1999 Hybrid Error Control Mechanism for Video Transmission

....for CBR video. However VBR encoding offers some key advantages. For instance, for the same average bandwidth, a variable bit rate encoding offers higher quality and more opportunities for statistical multiplexing gain than would be possible for a constant bit rate encoding [19, 20] Recently, [21] considered the problem of using periodic broadcast for transmitting multiple VBR videos over a fixed bandwidth connection from the server. Using nonuniform segmentation schemes developed for CBR video, they study the impact of multiplexing the transmissions of the resultant segments, using ....

D. Saparilla, K. W. Ross, and M. Reisslein, "Periodic Broadcasting with VBR-Encoded Video," in Proc. IEEE INFOCOM, March 1999.

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D. Saparilla, K. Ross, and M. Reisslein, "Periodic Broadcasting with VBR-Encoded Video," in Proc. of INFOCOM'99, 1999.

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D. Saparilla, K. Ross, and M. Reisslein, \Periodic broadcasting with VBR-encoded video," in Proc. IEEE Infocom'99, pp. 464-471, (New York, NY), March 1999.

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