{"title":"TSFD: two stage frame dropping for scalable video transmission over data networks","authors":"B. Zheng, Mohammed Atiquzzaman","doi":"10.1109/HPSR.2001.923601","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923601","url":null,"abstract":"Scalable video transmission is used to adjust the rate of video depending on the level of network congestion. Previous studies on scalable video transmission of MPEG over ATM ABR service required major changes in the network protocols and did not provide methods to determine the ABR connection parameters. We propose a new scalable video transmission scheme which does not require major changes in network protocols. In our proposed scheme, frames are dynamically dropped either by the source or the network depending on the level of network congestion.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134461891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On scheduling using parallel input-output queued crossbar switches with no speedup","authors":"S. Mneimneh, V. Sharma, Kai-Yeung Siu","doi":"10.1109/HPSR.2001.923654","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923654","url":null,"abstract":"We propose an efficient parallel switching architecture (PSA) that requires no speedup and guarantees bounded delay. Our architecture consists of /spl kappa/ crossbar switches operating in parallel under the control of a single scheduler, with /spl kappa/ being independent of N the number of inputs and outputs of the PSA. Arriving traffic is demultiplexed (spread) over the /spl kappa/ identical crossbar switches, switched to the correct output, and multiplexed (combined) before departing from the parallel switch. We show that by using an appropriate demultiplexing strategy at the inputs and by applying the same matching at each of the /spl kappa/ parallel crossbar switches during each slot, our scheme guarantees that the cells of a flow can be read in FIFO order from the output queues of the crossbar switches, thus eliminating the need for cell resequencing. Further, by allowing the PSA scheduler to examine the state of only the first of the /spl kappa/ parallel switches, our scheme also reduces considerably the amount of state information required at the scheduler. The scheduling algorithms that we develop are based on existing practical scheduling algorithms for crossbar switches, and have an additional communication complexity that is optimal up to a constant factor. Our approach also provides a way to build a high capacity switch/router that can support line rates that are higher than the speed at which the parallel switches themselves operate.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115207056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Load balanced Birkhoff-von Neumann switches","authors":"Cheng-Shang Chang, D. Lee, Yi-Shean Jou","doi":"10.1109/HPSR.2001.923646","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923646","url":null,"abstract":"Motivated by the need of a simple and high performance switch architecture that scales up with the speed of fiber optics, we propose a switch architecture with two-stage switching fabrics and one-stage buffering. The first stage performs load balancing, while the second stage is a Birkhoff-von Neumann input-buffered switch that performs switching for load balanced traffic. Such a switch is called the load balanced Birkhoff-von Neumann switch in this paper. The on-line complexity of the switch is O(1). It is shown that under a mild technical condition on the input traffic, the load balanced Birkhoff-von Neumann switch achieves 100% throughput as an output-buffered switch for both unicast and multicast traffic with fan-out splitting. When input traffic is bursty, we show that load balancing is very effective in reducing delay, and the average delay of the load balanced Birkhoff-von Neumann switch converges to that of an output-buffered switch under heavy load. Also, by simulations, we demonstrate that load balancing is more effective than the conflict resolution algorithm, i-SLIP, in heavy loads. When both the load balanced Birkhoff-von Neumann switch and the corresponding output-buffered switch are allocated with the same finite amount of buffer at each port, we also show that the packet loss probability in the load balanced Birkhoff-von Neumann switch is much smaller than that in an output-buffered switch when the buffer is large.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124409407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The preplanned weighted restoration scheme","authors":"A. Fumagalli, L. Valcarenghi","doi":"10.1109/HPSR.2001.923600","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923600","url":null,"abstract":"One of the expected benefits of wavelength division multiplexing (WDM) is the possibility to provide an optical layer (OL) with built-in capabilities to survive network component faults, e.g., fiber cut. Several schemes exist to design a reliable OL. These schemes are generally divided into protection and restoration techniques. Protection schemes reserve in advance a dedicated backup path and a wavelength that are readily available upon disruption of the working path. Restoration schemes, on the contrary, dynamically look for backup paths of spare wavelengths upon failure occurrence. The authors propose a fast and efficient path restoration scheme called preplanned weighted restoration (PWR). In the PWR scheme distinct restoration paths are precomputed at the source node during the connection setup. Upon failure, one of the preplanned paths is randomly selected depending on specific weights precalculated by the source node. The proposed scheme requires limited signaling upon failure occurrence as coordination among the source nodes involved in the restoration process is not required. Therefore, the scheme is fast and scalable in terms of number of network nodes, link or fiber capacity, and number of connections. Yet, the presented results show that the PWR scheme may considerably decrease the blocking probability of the restoration attempts when compared to other schemes such as alternate routing.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116928830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Rojas-Cessa, Eiji Oki, Z. Jing, Hung-Hsiang Jonathan Chao
{"title":"CIXB-1: combined input-one-cell-crosspoint buffered switch","authors":"R. Rojas-Cessa, Eiji Oki, Z. Jing, Hung-Hsiang Jonathan Chao","doi":"10.1109/HPSR.2001.923655","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923655","url":null,"abstract":"Buffered crossbars have been considered as an alternative for non-buffered crossbars to improve switching throughput. The drawback of a buffered crossbar is the memory amount that is proportional to the square of the number of ports (O(N/sup 2/)). This is not the main limitation when the buffer size is kept to a minimum size such that implementation is feasible. For a small buffer size, the number of ports of a switch module is not limited by the memory amount but by the pin count. We propose a novel architecture: a combined input-one-cell-crosspoint buffer crossbar (CIXB-1) with virtual output queues (VOQs) at the inputs and round-robin arbitration. We show that the proposed architecture can provide 100% throughput under uniform traffic. A CIXB-1 offers several advantages for a feasible implementation such as scalability and timing relaxation. With the currently available memory technology, a one-cell-crosspoint buffered switch is feasible for a 32/spl times/32 fabric module.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128341515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ikutaro Ogushi, S. Arakawa, Masayuki Murata, Ken-ichi Kitayama
{"title":"Parallel reservation protocols for achieving fairness in optical burst switching","authors":"Ikutaro Ogushi, S. Arakawa, Masayuki Murata, Ken-ichi Kitayama","doi":"10.1109/HPSR.2001.923634","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923634","url":null,"abstract":"Optical burst switching (OBS) is one promising method for data transfer in photonic networks based on a WDM (wavelength division multiplexing) technology. In the OBS scheme, the wavelength is exclusively reserved along the source and destination nodes, when the burst data is generated at the source. Then, efficient data transfer is expected. However, its performance is heavily dependent on the number of links that the lightpath goes through, We propose a new protocol for OBS networks, where the lightpath for the burst transmission is set up by parallel wavelength reservations. Through simulation results, we show that our protocol makes data transfer efficiently and improves the fairness among the connections with different number of hop counts.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123571144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A network processor architecture for flexible QoS control in very high-speed line interfaces","authors":"H. Shimonishi, T. Murase","doi":"10.1109/HPSR.2001.923669","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923669","url":null,"abstract":"We developed a network processor architecture that can be used for very high-speed line interfaces of carrier-class backbone routers and switches. Because advanced queuing and packet scheduling mechanisms are implemented as a software routine without the need for any special hardware components, the architecture provides a flexible QoS control mechanism and enables effective header handling.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123000472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A multiconstraint QoS routing scheme using the depth-first search method with limited crankbacks","authors":"Dong-Won Shin, E. Chong, H. Siegel","doi":"10.1109/HPSR.2001.923666","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923666","url":null,"abstract":"We propose a multiconstraint QoS routing scheme using the DFS (depth-first search) method to sequentially search for a feasible routing path. Although the standard sequential search approach has several advantages, it has not been explored for multiconstraint QoS routing in the literature due to its asymptotic exponential worst-case time complexity. Our scheme limits the number of crankbacks per node (crankback degree) to control the worst-case time complexity. The scheme uses a metric, called the normalized margin, to reduce the average-case time complexity by first exploring the paths that are most likely to be feasible. We further tune the crankback degree based on correlation coefficients between QoS attributes to reduce the worst-case time complexity. We use simulations to show that our scheme solves multiconstraint QoS routing problems with a small probability of missing a feasible path while keeping the average-case time complexity low.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125614857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"TD/sup 2/FQ: an integrated traffic scheduling and shaping scheme for DiffServ networks","authors":"D. Hang, Huai-Rong Shao, Wenwu Zhu, Ya-Qin Zhang","doi":"10.1109/HPSR.2001.923608","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923608","url":null,"abstract":"The provision of quality of service (QoS) in terms of delay guarantee to real-time applications is a challenging issue in differentiated services (DiffServ) networks. There is a great demand to maintain individual flow's traffic pattern when scheduling aggregated traffic. In this paper, we propose an integrated traffic scheduling and shaping scheme for DiffServ networks. The proposed scheme is called TD/sup 2/FQ (token-driven delay-sensitive dynamic fair queueing). There are two highlights in TD/sup 2/FQ: a new scheduling mechanism-delay-sensitive dynamic fair queueing, and a new colored token approach. Besides the provision of guaranteed delay bound, TD/sup 2/FQ can handle the aggregated traffic shaping and maintain the inter-flow fairness within each traffic class. Theoretical analysis and simulation experiments are also presented. Comparison results demonstrate the advantage of our approach.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131151322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Upper-bound for blocking probabilities of a class of optical MINs under crosstalk-free constraint","authors":"Xiaohong Jiang, M. Khandker, S. Horiguchi","doi":"10.1109/HPSR.2001.923632","DOIUrl":"https://doi.org/10.1109/HPSR.2001.923632","url":null,"abstract":"Available results indicate that under the crosstalk-free constraint, the hardware cost will be high for a strictly nonblocking optical multistage interconnection network (MIN) based on a vertical stacking scheme. In this paper, the blocking behaviors of this class of optical MINs are studied from the probabilistic view, and an upper bound probabilistic model is developed to describe the blocking behaviors of these switching systems under the crosstalk-free constraint. The simulation results based on a random request generator and a \"conservative\" routing strategy show that the probabilistic model is very accurate in describing the upper bound for blocking probabilities of these optical MINs. We further demonstrate through the analytical model that even the upper bound model is considered, the hardware of a optical MIN can still be reduced dramatically while a very low blocking probability is guaranteed.","PeriodicalId":308964,"journal":{"name":"2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127932672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}