This paper contains recent results of ATM traffic studies obtained by the project partners involved in the Broadband Local Network Technology (BLNT) RACE project 1012. These studies are concerned with congestion notification methods, problems in conjunction with Peak Cell Rate control and the analysis of multi-stage switching systems. The implications of these studies on the design and performance of an ATM node are discussed.
{"title":"Performance design of an ATM node on the basis of the experience from the BLNT RACE project","authors":"H. Heiss, E. Wallmeier, G. Rigolio, T. Toniatti","doi":"10.1002/ett.4460050211","DOIUrl":"https://doi.org/10.1002/ett.4460050211","url":null,"abstract":"This paper contains recent results of ATM traffic studies obtained by the project partners involved in the Broadband Local Network Technology (BLNT) RACE project 1012. These studies are concerned with congestion notification methods, problems in conjunction with Peak Cell Rate control and the analysis of multi-stage switching systems. The implications of these studies on the design and performance of an ATM node are discussed.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"1 1","pages":"199-206"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82370934","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}
J. Domingo, H. Michiel, R. Habermann, M. Sommer, N. Mitrou, Y. Du, Martina Götz, R. Lehnert, Zhili Sun, J. Cosmas, T. Renger, T. Theimer
This paper summarizes the work done in RACE project 1022 “Technology for ATD” on performance studies of ATM switching block architectures and the studies on network performance within a small ATM network, the so called RACE ATD Technology Testbed (RATT). The aim of the studies was to investigate the behaviour of a typical ATM network under nominal load. By using the tromboning links in the RATT we were also able to study long distance connections even in the limited size of the RATT network. Special attention has been given to define a traffic scenario which can also be set up for the planned experiments. The goal of the planned experiments is to validate the performance results predicted in our studies.
{"title":"Switching block studies, network performance evaluation and traffic engineering for ATM","authors":"J. Domingo, H. Michiel, R. Habermann, M. Sommer, N. Mitrou, Y. Du, Martina Götz, R. Lehnert, Zhili Sun, J. Cosmas, T. Renger, T. Theimer","doi":"10.1002/ett.4460050210","DOIUrl":"https://doi.org/10.1002/ett.4460050210","url":null,"abstract":"This paper summarizes the work done in RACE project 1022 “Technology for ATD” on performance studies of ATM switching block architectures and the studies on network performance within a small ATM network, the so called RACE ATD Technology Testbed (RATT). The aim of the studies was to investigate the behaviour of a typical ATM network under nominal load. By using the tromboning links in the RATT we were also able to study long distance connections even in the limited size of the RATT network. Special attention has been given to define a traffic scenario which can also be set up for the planned experiments. The goal of the planned experiments is to validate the performance results predicted in our studies.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"35 1","pages":"187-198"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78923891","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}
This paper presents an approach to B-ISDN traffic control functionality allocation in the framework of the TMN reference configuration developed within the RACE Programme by project R1053 TERRACE. The TMN concept has been introduced by standardization activities to support the management requirements of the Administrations, and its basic idea is to provide an architecture to achieve the interconnection between Operation Systems and Network Elements for the exchange of management information using standardised interfaces. Within TERRACE this concept has been revised in order to cater for the complex IBC network and service environment proposed by RACE and the TMN reference configuration has been defined as composed of a set of models, namely the structural framework and the functional, information, communication and usage models. The paper will primarily focus on the relationship between the TMN and the B-ISDN traffic control functionality, with the objective to propose their allocation to the TMN functional blocks.
{"title":"A TMN approach to traffic control in B-ISDN","authors":"E. Bagnasco, M. Burgassi, P. Castelli","doi":"10.1002/ett.4460050214","DOIUrl":"https://doi.org/10.1002/ett.4460050214","url":null,"abstract":"This paper presents an approach to B-ISDN traffic control functionality allocation in the framework of the TMN reference configuration developed within the RACE Programme by project R1053 TERRACE. The TMN concept has been introduced by standardization activities to support the management requirements of the Administrations, and its basic idea is to provide an architecture to achieve the interconnection between Operation Systems and Network Elements for the exchange of management information using standardised interfaces. Within TERRACE this concept has been revised in order to cater for the complex IBC network and service environment proposed by RACE and the TMN reference configuration has been defined as composed of a set of models, namely the structural framework and the functional, information, communication and usage models. The paper will primarily focus on the relationship between the TMN and the B-ISDN traffic control functionality, with the objective to propose their allocation to the TMN functional blocks.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"26 1","pages":"227-234"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82797249","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}
Having considered the mapping of logical traffic and control channels onto physical channels, speech and error correction coding, interleaving as well as the TDMA hierarchy and synchronisation problems in Part I of this contribution, here mainly transmission issues are addressed [1–6] and some performance figures are provided. Constant envelope partial response Gaussian Minimum Shift Keying (GMSK) with a channel spacing of 200 kHz is deployed to support 125 duplex channels in the 890 - 915MHz uplink and 935 - 960 MHz downlink bands, respectively. At a transmission rate of 271 kbit/s 1.35 bit/s/Hz spectral efficiency is achieved. The controlled GMSK-induced and un-controlled channel-induced inter-symbol interferences are removed by the channel equaliser. The set of standardised wide-band GSM channels is introduced in order to provide bench-markers for performance comparisons. Efficient power budgeting and minimum co-channel interferences are ensured by the combination of adaptive power- and handover-control based on weighted averaging of up to eight uplink and downlink system parameters. Discontinuous transmissions (DTX) assisted by reliable spectral-domain voice activity detection (VAD) and comfort-noise insertion further reduce interferences and power consumption. Due to ciphering, no unprotected information is sent via the radio link. As a result, spectrally efficient, high-quality mobile communications with a variety of services and international roaming is possible in cells of up to 35km radius for signal to noise- and interference-ratios in excess of 10 - 12 dBs.
{"title":"The pan-European mobile radio system: Part I","authors":"L. Hanzo, R. Steele","doi":"10.1002/ETT.4460050216","DOIUrl":"https://doi.org/10.1002/ETT.4460050216","url":null,"abstract":"Having considered the mapping of logical traffic and control channels onto physical channels, speech and error correction coding, interleaving as well as the TDMA hierarchy and synchronisation problems in Part I of this contribution, here mainly transmission issues are addressed [1–6] and some performance figures are provided. Constant envelope partial response Gaussian Minimum Shift Keying (GMSK) with a channel spacing of 200 kHz is deployed to support 125 duplex channels in the 890 - 915MHz uplink and 935 - 960 MHz downlink bands, respectively. At a transmission rate of 271 kbit/s 1.35 bit/s/Hz spectral efficiency is achieved. The controlled GMSK-induced and un-controlled channel-induced inter-symbol interferences are removed by the channel equaliser. The set of standardised wide-band GSM channels is introduced in order to provide bench-markers for performance comparisons. Efficient power budgeting and minimum co-channel interferences are ensured by the combination of adaptive power- and handover-control based on weighted averaging of up to eight uplink and downlink system parameters. Discontinuous transmissions (DTX) assisted by reliable spectral-domain voice activity detection (VAD) and comfort-noise insertion further reduce interferences and power consumption. Due to ciphering, no unprotected information is sent via the radio link. As a result, spectrally efficient, high-quality mobile communications with a variety of services and international roaming is possible in cells of up to 35km radius for signal to noise- and interference-ratios in excess of 10 - 12 dBs.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"56 1","pages":"245-260"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82300345","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}
T. Toniatti, L. Verri, O. Casals, J. García-Vidal, C. Blondia, J. Angelopoulos, I. Venieris
The paper analyses the problem of Medium Access Control in a Passive Optical Network, used to concentrate ATM user traffic. Feasible solutions for the problem are investigated and two protocols to resolve contention on the shared medium are presented, the single cell and the multiple cell frame based. The performance of the two protocols is evaluated, obtaining indications about the transfer delay introduced by the protocols and the amount of buffering needed at the user side.
{"title":"Performance of shared medium access protocols for ATM traffic concentration","authors":"T. Toniatti, L. Verri, O. Casals, J. García-Vidal, C. Blondia, J. Angelopoulos, I. Venieris","doi":"10.1002/ett.4460050213","DOIUrl":"https://doi.org/10.1002/ett.4460050213","url":null,"abstract":"The paper analyses the problem of Medium Access Control in a Passive Optical Network, used to concentrate ATM user traffic. Feasible solutions for the problem are investigated and two protocols to resolve contention on the shared medium are presented, the single cell and the multiple cell frame based. The performance of the two protocols is evaluated, obtaining indications about the transfer delay introduced by the protocols and the amount of buffering needed at the user side.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"15 5-6","pages":"219-226"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ett.4460050213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72452534","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}
The known suboptimal sequential detection methods need a minimum-phase signal as input for achieving good performance. As a consequence the received signal must be first transformed to minimum-phase by an adaptive prefilter if simplified detection methods are applied. This roundabout way is avoided in a novel algorithm for sequential detection, where the metric calculation itself is fitted to the special situation of the compare-and-select procedure. The detection method uses two different metrics, one for comparing paths, which have merged in a common trellis-state, the other for comparing paths which have just emerged from a common state. In this way the usual adaptive prefilter can be saved, because the proposed detector does not require a minimum-phase signal at its input. Simulation results show excellent management of distorted and noisy signals.
{"title":"A new approach to sequential detection","authors":"K. Metzger","doi":"10.1002/ett.4460050215","DOIUrl":"https://doi.org/10.1002/ett.4460050215","url":null,"abstract":"The known suboptimal sequential detection methods need a minimum-phase signal as input for achieving good performance. As a consequence the received signal must be first transformed to minimum-phase by an adaptive prefilter if simplified detection methods are applied. This roundabout way is avoided in a novel algorithm for sequential detection, where the metric calculation itself is fitted to the special situation of the compare-and-select procedure. The detection method uses two different metrics, one for comparing paths, which have merged in a common trellis-state, the other for comparing paths which have just emerged from a common state. In this way the usual adaptive prefilter can be saved, because the proposed detector does not require a minimum-phase signal at its input. Simulation results show excellent management of distorted and noisy signals.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"4 1","pages":"235-244"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75485511","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：