Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688169
E. Ruh, M. Juanatey, F. D'Alvano
The ATM Forum has adopted rate based schemes as standard for flow control. Although Phantom is also based on rate, no information about any implementation of it has been found. The results of a simulation study of Phantom are presented in this paper; it exhibits a low peak buffer occupancy dependency on the number of sessions, even under progressively increasing traffic loads, a high link utilization factor and convergence to a fair rate allocation, which is markedly affected by the round trip time.
{"title":"Analysis and simulation of a recently proposed flow control algorithm for ATM networks: Phantom","authors":"E. Ruh, M. Juanatey, F. D'Alvano","doi":"10.1109/ICATM.1998.688169","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688169","url":null,"abstract":"The ATM Forum has adopted rate based schemes as standard for flow control. Although Phantom is also based on rate, no information about any implementation of it has been found. The results of a simulation study of Phantom are presented in this paper; it exhibits a low peak buffer occupancy dependency on the number of sessions, even under progressively increasing traffic loads, a high link utilization factor and convergence to a fair rate allocation, which is markedly affected by the round trip time.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125538994","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688156
A. Kassler, A. Lupper
Mobility will be one key issue for future broadband access. Consequently, many research projects are currently focusing on wireless ATM networks. Within the European ACTS research program the "Magic WAND" project is developing mobile terminals and access points based on wireless ATM technology. The terminals will communicate at a speed up to 20 Mbit/s in the 5 GHz band within multiple picocells of approximately 50 meters in diameter. This technology supports applications and services demanding both high bandwidth and mobile network access, two contradicting requirements in the past. We take a look at typical multimedia applications and evaluate the key components of the WAND system necessary to support their quality of service (QoS) requirements. One major challenge is to guarantee QoS transparently over the wireless link. We present our solutions for a QoS-supported mobile audio/videoconferencing subsystem and analyse how video compression algorithms behave under the conditions of a wireless medium.
{"title":"Support for multimedia applications in a wireless ATM system","authors":"A. Kassler, A. Lupper","doi":"10.1109/ICATM.1998.688156","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688156","url":null,"abstract":"Mobility will be one key issue for future broadband access. Consequently, many research projects are currently focusing on wireless ATM networks. Within the European ACTS research program the \"Magic WAND\" project is developing mobile terminals and access points based on wireless ATM technology. The terminals will communicate at a speed up to 20 Mbit/s in the 5 GHz band within multiple picocells of approximately 50 meters in diameter. This technology supports applications and services demanding both high bandwidth and mobile network access, two contradicting requirements in the past. We take a look at typical multimedia applications and evaluate the key components of the WAND system necessary to support their quality of service (QoS) requirements. One major challenge is to guarantee QoS transparently over the wireless link. We present our solutions for a QoS-supported mobile audio/videoconferencing subsystem and analyse how video compression algorithms behave under the conditions of a wireless medium.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126376707","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688164
P. Cuenca, R. Casado, A. Garrido, F. Quiles, L. Orozco-Barbosa
Different performance studies have been made in the literature with cell discarding mechanism using analytical traffic models. The performance of these discarding schemes is strongly affected by the traffic model used. Hence, it is very important to study the performance of cell discarding mechanisms using real traffic statistics. In this paper simulation experiments are conducted to study the performance of the different cell discarding mechanisms, in terms of QoS, when used in an ATM switch supporting hierarchical encoded VBR MPEG-2 video traffic, from a number of independent video sources. Moreover, we explore how the temporal properties of this video traffic, and in particular the alignments between different sources affect network performance when many video traffic streams are multiplexed onto a single channel.
{"title":"Performance evaluation of cell discarding mechanisms for hierarchical VBR MPEG-2 video traffic over ATM networks","authors":"P. Cuenca, R. Casado, A. Garrido, F. Quiles, L. Orozco-Barbosa","doi":"10.1109/ICATM.1998.688164","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688164","url":null,"abstract":"Different performance studies have been made in the literature with cell discarding mechanism using analytical traffic models. The performance of these discarding schemes is strongly affected by the traffic model used. Hence, it is very important to study the performance of cell discarding mechanisms using real traffic statistics. In this paper simulation experiments are conducted to study the performance of the different cell discarding mechanisms, in terms of QoS, when used in an ATM switch supporting hierarchical encoded VBR MPEG-2 video traffic, from a number of independent video sources. Moreover, we explore how the temporal properties of this video traffic, and in particular the alignments between different sources affect network performance when many video traffic streams are multiplexed onto a single channel.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126399319","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688211
S. Yousef, C. Strange
For ATM networks, VBR, ABR and UBR are effective solutions to accommodate TCP/IP based LAN traffic. To obtain a high quality networking provision for TCP traffic it is important to select either ATM guaranteed or best effort service parameter values to clarify the interaction between the TCP flow control mechanism and the usage parameter control (UPC) function of the ATM switch. Previous studies have addressed the ABR issue and assumed a network context where the ABR service provides TCP/IP connections with zero cell loss connections. This can be considered feasible with explicit rate (ER) ABR control schemes even with reasonable sizing of the switch buffers. The interaction between TCP and ABR control incurs an important challenge. When ACR is low, the queue between TCP and ATM may become as large as the window and the delay may trigger a retransmission thus degrading the end-to-end performance and wasting the bandwidth. Moreover, the prioritised VBR traffic can also degrade the throughput of the ABR traffic. Bursty periodic and self-similar type traffic sources may be problematic for different ABR algorithms. Also, the hardware and software design is still a source of poor performance. The main challenges still to be overcome before the full application/services integration of the network becomes a reality are identified and some solutions are proposed. A simulation study is performed regarding the end-to-end delay for voice and video on IP and ATM networks.
{"title":"TCP/IP over ATM challenges in enterprise network integration","authors":"S. Yousef, C. Strange","doi":"10.1109/ICATM.1998.688211","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688211","url":null,"abstract":"For ATM networks, VBR, ABR and UBR are effective solutions to accommodate TCP/IP based LAN traffic. To obtain a high quality networking provision for TCP traffic it is important to select either ATM guaranteed or best effort service parameter values to clarify the interaction between the TCP flow control mechanism and the usage parameter control (UPC) function of the ATM switch. Previous studies have addressed the ABR issue and assumed a network context where the ABR service provides TCP/IP connections with zero cell loss connections. This can be considered feasible with explicit rate (ER) ABR control schemes even with reasonable sizing of the switch buffers. The interaction between TCP and ABR control incurs an important challenge. When ACR is low, the queue between TCP and ATM may become as large as the window and the delay may trigger a retransmission thus degrading the end-to-end performance and wasting the bandwidth. Moreover, the prioritised VBR traffic can also degrade the throughput of the ABR traffic. Bursty periodic and self-similar type traffic sources may be problematic for different ABR algorithms. Also, the hardware and software design is still a source of poor performance. The main challenges still to be overcome before the full application/services integration of the network becomes a reality are identified and some solutions are proposed. A simulation study is performed regarding the end-to-end delay for voice and video on IP and ATM networks.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126811245","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688165
Y. Ouyang, J.L. Sun
This paper presents a new flow control scheme based on multiple leaky buckets (MLB) for MPEG video in ATM networks. A basic assumption was made that not all MPEG traffic sources simultaneously generate data at their maximum rate. Unlike the conventional leaky bucket (LB), the leaky rate and buffer capacity of all LBs are shared in the same virtual path. In our mechanism, the leaky rate and buffer capacity of each LB is dynamically adjusted based on the buffer occupancy. To validate the performance of our mechanisms, sixteen real world MPEG-I traffic traces were used in our experiment. The simulation results show that the cell loss rate tended to decrease while the number of traffic sources increased. Moreover, the cell loss rate had three to more than one thousand times improvement compared to the conventional leaky bucket method.
{"title":"Multiple leaky buckets with buffer sharing for MPEG video in ATM networks","authors":"Y. Ouyang, J.L. Sun","doi":"10.1109/ICATM.1998.688165","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688165","url":null,"abstract":"This paper presents a new flow control scheme based on multiple leaky buckets (MLB) for MPEG video in ATM networks. A basic assumption was made that not all MPEG traffic sources simultaneously generate data at their maximum rate. Unlike the conventional leaky bucket (LB), the leaky rate and buffer capacity of all LBs are shared in the same virtual path. In our mechanism, the leaky rate and buffer capacity of each LB is dynamically adjusted based on the buffer occupancy. To validate the performance of our mechanisms, sixteen real world MPEG-I traffic traces were used in our experiment. The simulation results show that the cell loss rate tended to decrease while the number of traffic sources increased. Moreover, the cell loss rate had three to more than one thousand times improvement compared to the conventional leaky bucket method.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127618178","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688178
H. Park, Yonshik Choi, Y.-K. Lee
In the evolution towards the broadband integrated services digital network (B-ISDN), the existing services and applications, which are used in N-ISDN, should be provided through the interworking function. Network interworking between N-ISDN and B-ISDN is one of the most important technical issues to provide existing N-ISDN services for N-ISDN users. As a trunking method to fulfil the interworking function (IWF), we present a network interworking mechanism based on the service interworking scenario specified by the telecommunication standardization of the International Telecommunication Union (ITU-T). It provides network-to-network interface (NNI) signaling protocol conversions between N-ISDN and B-ISDN, and it can make it much easier to extend the network interworking function to the service interworking function which allows communication between N-ISDN users and B-ISDN users. Therefore, the proposed interworking mechanism, when compared to other trunking methods, can be regarded as an efficient way for a step towards a future universal communication network. For network interworking, we describe the technical aspects to implement the IWF in terms of hardware and software. We particularly address the call/connection control for the interworking between the N-ISDN service and the B-ISDN service, and the signaling conversions of network interface protocols between N-ISDN and B-ISDN. We also discuss several restrictions and benefits of the proposed network interworking method.
{"title":"Network interworking for narrowband services over an ATM network","authors":"H. Park, Yonshik Choi, Y.-K. Lee","doi":"10.1109/ICATM.1998.688178","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688178","url":null,"abstract":"In the evolution towards the broadband integrated services digital network (B-ISDN), the existing services and applications, which are used in N-ISDN, should be provided through the interworking function. Network interworking between N-ISDN and B-ISDN is one of the most important technical issues to provide existing N-ISDN services for N-ISDN users. As a trunking method to fulfil the interworking function (IWF), we present a network interworking mechanism based on the service interworking scenario specified by the telecommunication standardization of the International Telecommunication Union (ITU-T). It provides network-to-network interface (NNI) signaling protocol conversions between N-ISDN and B-ISDN, and it can make it much easier to extend the network interworking function to the service interworking function which allows communication between N-ISDN users and B-ISDN users. Therefore, the proposed interworking mechanism, when compared to other trunking methods, can be regarded as an efficient way for a step towards a future universal communication network. For network interworking, we describe the technical aspects to implement the IWF in terms of hardware and software. We particularly address the call/connection control for the interworking between the N-ISDN service and the B-ISDN service, and the signaling conversions of network interface protocols between N-ISDN and B-ISDN. We also discuss several restrictions and benefits of the proposed network interworking method.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122709212","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688204
J. Lee
We propose a home PC architecture that takes advantage of MPEG-2 over ATM hardware. The home PC has an ATM bearer capability, MPEG-2 decoding function for high quality audio-visual services embedded in an add-on board, classical IP functions for data service and a native ATM function for a real time video-telephony service. The proposed home PC architecture can be used as an entertainment device, individual information gatekeeper, and an interactive communications tool.
{"title":"A design and implementation of home PC for interactive multimedia services","authors":"J. Lee","doi":"10.1109/ICATM.1998.688204","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688204","url":null,"abstract":"We propose a home PC architecture that takes advantage of MPEG-2 over ATM hardware. The home PC has an ATM bearer capability, MPEG-2 decoding function for high quality audio-visual services embedded in an add-on board, classical IP functions for data service and a native ATM function for a real time video-telephony service. The proposed home PC architecture can be used as an entertainment device, individual information gatekeeper, and an interactive communications tool.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126647626","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688159
J. Fornés, J. A. Ternero, F. R. Rubio
Available bit rate (ABR) service may be used by applications which expect cell loss guarantees, but can control their data dynamically as demanded by the network. The introduction of variable bit rate (VBR) background traffic makes ABR capacity variable. A video aggregation system can adapt the traffic from several Moving Picture Expert Group (MPEG) sources as a bundle to the ABR on the network, obtaining an homogeneous image quality among all the video sequences, discarding the less-relevant information of each source according to image quality.
{"title":"MPEG video aggregation over ABR-ATM","authors":"J. Fornés, J. A. Ternero, F. R. Rubio","doi":"10.1109/ICATM.1998.688159","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688159","url":null,"abstract":"Available bit rate (ABR) service may be used by applications which expect cell loss guarantees, but can control their data dynamically as demanded by the network. The introduction of variable bit rate (VBR) background traffic makes ABR capacity variable. A video aggregation system can adapt the traffic from several Moving Picture Expert Group (MPEG) sources as a bundle to the ABR on the network, obtaining an homogeneous image quality among all the video sequences, discarding the less-relevant information of each source according to image quality.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127009143","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688190
A. Diniz, C. C. Goulart, J. Nogueira
This paper describes a prototype implementation of a dynamic bandwidth allocation service for ATM-based networks. The major purpose of this service is to increase resource utilization in a network supporting multimedia applications. The implementation was made using an API (application user interface) compatible with UNI version 3.0. The implementation consists of a set of primitives and their related PDU (protocol data units). Some measurements were done using the prototype implementation in order to observe the behavior of renegotiation rejections with respect to some parameters, such as node capacity, level of reservations, number of nodes and so on. The results here shown that the dynamic bandwidth allocation service can be used to increase resource utilization and, at the same time, to provide a high level of guarantee to the accepted connections.
{"title":"A dynamic bandwidth allocation service for ATM-based networks supporting multimedia applications","authors":"A. Diniz, C. C. Goulart, J. Nogueira","doi":"10.1109/ICATM.1998.688190","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688190","url":null,"abstract":"This paper describes a prototype implementation of a dynamic bandwidth allocation service for ATM-based networks. The major purpose of this service is to increase resource utilization in a network supporting multimedia applications. The implementation was made using an API (application user interface) compatible with UNI version 3.0. The implementation consists of a set of primitives and their related PDU (protocol data units). Some measurements were done using the prototype implementation in order to observe the behavior of renegotiation rejections with respect to some parameters, such as node capacity, level of reservations, number of nodes and so on. The results here shown that the dynamic bandwidth allocation service can be used to increase resource utilization and, at the same time, to provide a high level of guarantee to the accepted connections.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125080189","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}
Pub Date : 1998-06-22DOI: 10.1109/ICATM.1998.688157
B. Cornaglia, R. Santaniello, R. Leonardi, R. Lo Cigno, M. Meo, F. Neri, D. Saracino
The paper presents a study of LMDS systems in a multi-service traffic scenario. LMDS systems provide broadband wireless access from several multimedia user interfaces to a central node. A number of slotted radio channels are available to accommodate requests of transmission to and from user interfaces. The paper proposes resource allocation strategies for multi-service traffic scenarios, and signalling procedures for the interactions between central node and user interfaces. A possible traffic scenario is described for which a simulation-based performance study is performed. Our results show that a reasonably large number of users can be served by the considered system with acceptable service quality.
{"title":"LMDS systems: a possible solution for wireless ATM access networks","authors":"B. Cornaglia, R. Santaniello, R. Leonardi, R. Lo Cigno, M. Meo, F. Neri, D. Saracino","doi":"10.1109/ICATM.1998.688157","DOIUrl":"https://doi.org/10.1109/ICATM.1998.688157","url":null,"abstract":"The paper presents a study of LMDS systems in a multi-service traffic scenario. LMDS systems provide broadband wireless access from several multimedia user interfaces to a central node. A number of slotted radio channels are available to accommodate requests of transmission to and from user interfaces. The paper proposes resource allocation strategies for multi-service traffic scenarios, and signalling procedures for the interactions between central node and user interfaces. A possible traffic scenario is described for which a simulation-based performance study is performed. Our results show that a reasonably large number of users can be served by the considered system with acceptable service quality.","PeriodicalId":257298,"journal":{"name":"1998 1st IEEE International Conference on ATM. ICATM'98","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124761288","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：