Critical technologies required to support high bit rate and broadband services in the near and long term are discussed. Specifically, the loop requirements for residential video on demand are presented. The use of asymmetrical digital subscriber lines and Motion Picture Experts Group coding and switching systems to support video on demand are described.<>
{"title":"Switched simplex high bit rate services in today's residential environment","authors":"R.W. Lawrence","doi":"10.1109/ICC.1992.267961","DOIUrl":"https://doi.org/10.1109/ICC.1992.267961","url":null,"abstract":"Critical technologies required to support high bit rate and broadband services in the near and long term are discussed. Specifically, the loop requirements for residential video on demand are presented. The use of asymmetrical digital subscriber lines and Motion Picture Experts Group coding and switching systems to support video on demand are described.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127340494","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 author explains the main features of the virtual private network (VPN) and proposes and defines a new integrated service control point call processing design model for the intelligent network. The model allows multiple application services to be executed simultaneously and provides real-time behavior. The features and capabilities of this model of call processing are addressed, and it is applied to the VPN application services.<>
{"title":"Virtual private network call processing in the intelligent network","authors":"M. Atoui","doi":"10.1109/ICC.1992.268219","DOIUrl":"https://doi.org/10.1109/ICC.1992.268219","url":null,"abstract":"The author explains the main features of the virtual private network (VPN) and proposes and defines a new integrated service control point call processing design model for the intelligent network. The model allows multiple application services to be executed simultaneously and provides real-time behavior. The features and capabilities of this model of call processing are addressed, and it is applied to the VPN application services.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126194946","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}
G. Du Chaffaut, D. Chapelain, M. Borgne, S. Carpentier, J. Quéré
An asynchronous transfer mode (ATM) passive optical network (PON) system that is suitable for an early introduction into the local loop and is compatible with the target broadband integrated services digital network (B-ISDN) is described. Its technical feasibility has been evaluated on a demonstrator, the main results of which are presented. Some possible applications and evolutions of such a system are given.<>
{"title":"A flexible ATM PON system for the local loop","authors":"G. Du Chaffaut, D. Chapelain, M. Borgne, S. Carpentier, J. Quéré","doi":"10.1109/ICC.1992.267968","DOIUrl":"https://doi.org/10.1109/ICC.1992.267968","url":null,"abstract":"An asynchronous transfer mode (ATM) passive optical network (PON) system that is suitable for an early introduction into the local loop and is compatible with the target broadband integrated services digital network (B-ISDN) is described. Its technical feasibility has been evaluated on a demonstrator, the main results of which are presented. Some possible applications and evolutions of such a system are given.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123245346","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 authors show by analysis of mathematical models that combining channel borrowing with a coordinated sectoring or overlaying scheme provides effective ways to handle hot spots in the system. Blocking probabilities with these arrangements are derived and the dynamic sharing with bias (DSB) rule is suggested for increasing the trunking efficiency. A simple handoff model is formulated and analyzed for comparing the probabilities of additional handoffs due to sectoring and overlaying of cells. With the nominal allocation of 60 channels per cell and a donor cell having a load of 30 Erlangs, numerical results show that at blocking requirements of 1% channel borrowing with cell sectoring can increase the traffic load in the hot-spot cell from 47 Erlangs to 63 Erlangs, whereas with the use of the DSB rule the load can be increased further to 71 Erlangs. A slightly higher load can be carried in the hot-spot cell with the use of the cell overlaying arrangement. Under the technical assumptions, probability of an additional handoff for the sectorized arrangements is found to be about half of that for the cell overlaying arrangement.<>
{"title":"Hot-spot traffic relief in cellular systems","authors":"T. Yum, W. Wong","doi":"10.1109/ICC.1992.268004","DOIUrl":"https://doi.org/10.1109/ICC.1992.268004","url":null,"abstract":"The authors show by analysis of mathematical models that combining channel borrowing with a coordinated sectoring or overlaying scheme provides effective ways to handle hot spots in the system. Blocking probabilities with these arrangements are derived and the dynamic sharing with bias (DSB) rule is suggested for increasing the trunking efficiency. A simple handoff model is formulated and analyzed for comparing the probabilities of additional handoffs due to sectoring and overlaying of cells. With the nominal allocation of 60 channels per cell and a donor cell having a load of 30 Erlangs, numerical results show that at blocking requirements of 1% channel borrowing with cell sectoring can increase the traffic load in the hot-spot cell from 47 Erlangs to 63 Erlangs, whereas with the use of the DSB rule the load can be increased further to 71 Erlangs. A slightly higher load can be carried in the hot-spot cell with the use of the cell overlaying arrangement. Under the technical assumptions, probability of an additional handoff for the sectorized arrangements is found to be about half of that for the cell overlaying arrangement.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115989082","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}
Diagnosis of network anomalies is an important component of network management. A way to obtain a set of diagnostic rules by using a machine learning (ML) tool is described. In particular an overload situation is analyzed. Expert knowledge and a series of simulated network situations are employed together as inputs to a machine learning system. The ML tool helps the traffic engineer in proposing new rules and refining preexisting ones. The authors present a possible sequence of experiments that has led to a set of rules for recognizing a specific overload situation.<>
{"title":"Using a machine learning tool in diagnosis of network overload","authors":"R. Bisio, R. Gemello, E. Montariolo","doi":"10.1109/ICC.1992.267979","DOIUrl":"https://doi.org/10.1109/ICC.1992.267979","url":null,"abstract":"Diagnosis of network anomalies is an important component of network management. A way to obtain a set of diagnostic rules by using a machine learning (ML) tool is described. In particular an overload situation is analyzed. Expert knowledge and a series of simulated network situations are employed together as inputs to a machine learning system. The ML tool helps the traffic engineer in proposing new rules and refining preexisting ones. The authors present a possible sequence of experiments that has led to a set of rules for recognizing a specific overload situation.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116120589","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 authors present a generating function for runlength limited sequences intended for binary asymmetrical channels. The channel capacity for such channels is derived from this generating function. They present selected numerical values of channel capacity for these sequences. An expression for the power spectrum of binary maxentropic asymmetrical sequences is given and the influence of the asymmetry on the spectrum is investigated. Two new runlength limited modulation codes which are suitable for use on binary asymmetrical channels are investigated.<>
{"title":"Runlength limited codes and sequences for binary asymmetrical channels","authors":"C. Menyennett, H. Ferreira, I. Broere","doi":"10.1109/ICC.1992.268102","DOIUrl":"https://doi.org/10.1109/ICC.1992.268102","url":null,"abstract":"The authors present a generating function for runlength limited sequences intended for binary asymmetrical channels. The channel capacity for such channels is derived from this generating function. They present selected numerical values of channel capacity for these sequences. An expression for the power spectrum of binary maxentropic asymmetrical sequences is given and the influence of the asymmetry on the spectrum is investigated. Two new runlength limited modulation codes which are suitable for use on binary asymmetrical channels are investigated.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116448545","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 status of exchange-carrier networks is discussed in terms of their progress toward an architecture based entirely on digital switching and transmission facilities. Trends in networking, such as self-healing fiber rings, common-channel signaling, centralization of network control via standard interfaces to operations systems, and the eclipsing of analog technology, are described. Some advanced services that are derived from network capabilities and are being offered to telecommunications users are examined. It is shown that the increasing mechanization of operations functions through intelligent network elements makes it possible to provide and maintain services with reduced human intervention and with quicker response and higher reliability.<>
{"title":"The state of the network-1992","authors":"L. Sibley","doi":"10.1109/ICC.1992.267958","DOIUrl":"https://doi.org/10.1109/ICC.1992.267958","url":null,"abstract":"The status of exchange-carrier networks is discussed in terms of their progress toward an architecture based entirely on digital switching and transmission facilities. Trends in networking, such as self-healing fiber rings, common-channel signaling, centralization of network control via standard interfaces to operations systems, and the eclipsing of analog technology, are described. Some advanced services that are derived from network capabilities and are being offered to telecommunications users are examined. It is shown that the increasing mechanization of operations functions through intelligent network elements makes it possible to provide and maintain services with reduced human intervention and with quicker response and higher reliability.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122379886","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}
A new approach to decision-directed (DD) blind equalization is introduced based on a neural network classification technique. The new DD algorithm, the soft decision-directed equalization algorithm, is most effective for reconstructing binary phase shift keying and quadrature phase shift keying signals. The new DD blind equalizer can converge in closed eye situations. In the simulations, the performance of the soft DD algorithm was illustrated by applying it to a two-dimensional digital mobile communications system. A time-varying multipath fading channel model was used as the transmission medium. The performance of the soft DD blind equalization algorithm is compared to that of the standard DD algorithm, the maximum-level-error (MLE) algorithm, and the fast recursive least squares decision-feedback equalization (FRLS-DFE) algorithm. The simulation results demonstrate the improvement in performance achievable with the proposed soft DD equalization algorithm.<>
{"title":"A soft decision-directed blind equalization algorithm applied to equalization of mobile communication channels","authors":"J. Karaoguz, S. Ardalan","doi":"10.1109/ICC.1992.268036","DOIUrl":"https://doi.org/10.1109/ICC.1992.268036","url":null,"abstract":"A new approach to decision-directed (DD) blind equalization is introduced based on a neural network classification technique. The new DD algorithm, the soft decision-directed equalization algorithm, is most effective for reconstructing binary phase shift keying and quadrature phase shift keying signals. The new DD blind equalizer can converge in closed eye situations. In the simulations, the performance of the soft DD algorithm was illustrated by applying it to a two-dimensional digital mobile communications system. A time-varying multipath fading channel model was used as the transmission medium. The performance of the soft DD blind equalization algorithm is compared to that of the standard DD algorithm, the maximum-level-error (MLE) algorithm, and the fast recursive least squares decision-feedback equalization (FRLS-DFE) algorithm. The simulation results demonstrate the improvement in performance achievable with the proposed soft DD equalization algorithm.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122980368","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}
Protocol specifications play an important role in telecommunications software specifications and many techniques exist to support design and analysis of protocol specifications. Among these are techniques for transformation between sequence charts and specification description language (SDL), which are discussed. Principles for translation between a specification in SDL and a specification in state transition diagrams are discussed, and a transformation technique between a specification in a state transition diagram and a specification in message sequence charts is described. A cyclic expansion-based protocol validation and component-based protocol synthesis are adopted to realize an efficient transformation.<>
{"title":"Transformation technique between specification in SDL and specification in message sequence charts for designing protocol specifications","authors":"A. Ito, H. Saito, F. Nitta, Y. Kakuda","doi":"10.1109/ICC.1992.268091","DOIUrl":"https://doi.org/10.1109/ICC.1992.268091","url":null,"abstract":"Protocol specifications play an important role in telecommunications software specifications and many techniques exist to support design and analysis of protocol specifications. Among these are techniques for transformation between sequence charts and specification description language (SDL), which are discussed. Principles for translation between a specification in SDL and a specification in state transition diagrams are discussed, and a transformation technique between a specification in a state transition diagram and a specification in message sequence charts is described. A cyclic expansion-based protocol validation and component-based protocol synthesis are adopted to realize an efficient transformation.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114393034","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 authors investigate the structural representation of real-time network control and management of asynchronous transfer modes (ATM)-based networks. The network architecture consists of four planes that model the information transport, connection management and control, resource monitoring and management, and resource management and control functions. A fifth plane represents the architecture for network management based on the open systems interconnection (OSI) management paradigm and provides for operations, administration and maintenance tasks. The storage of information is based on a set of inheritance and containment trees of network objects.<>
{"title":"Structural representation of management and control information in broadband networks","authors":"M. Tsuchida, A. Lazar, N. G. Aneroussis","doi":"10.1109/ICC.1992.268059","DOIUrl":"https://doi.org/10.1109/ICC.1992.268059","url":null,"abstract":"The authors investigate the structural representation of real-time network control and management of asynchronous transfer modes (ATM)-based networks. The network architecture consists of four planes that model the information transport, connection management and control, resource monitoring and management, and resource management and control functions. A fifth plane represents the architecture for network management based on the open systems interconnection (OSI) management paradigm and provides for operations, administration and maintenance tasks. The storage of information is based on a set of inheritance and containment trees of network objects.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121895633","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}
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