Pub Date : 1997-06-23DOI: 10.1109/HPCS.1997.864036
D. Sisalem
Many applications, mainly handling data transfer, have the ability to reduce their sending rate if the network requires them to do so. Likewise, they may wish to increase their sending rate if there is extra bandwidth available within the network. This kind of applications is supported by an ATM layer service called the available bit rate service (ABR). Applications using the ABR service can expect the following quality of service commitments from the network: 1. The available bandwidth is fairly distributed among all active ABR connections. 2. A minimum cell rate that is agreed upon during the connection establishment phase. 3. Only a preset fraction of the sent celIs can be dropped as long as the sending behavior of the application conforms to the negotiated values.
{"title":"Behavior of various switch mechanisms for the ABR service in the presence of persistent and dynamic traffic","authors":"D. Sisalem","doi":"10.1109/HPCS.1997.864036","DOIUrl":"https://doi.org/10.1109/HPCS.1997.864036","url":null,"abstract":"Many applications, mainly handling data transfer, have the ability to reduce their sending rate if the network requires them to do so. Likewise, they may wish to increase their sending rate if there is extra bandwidth available within the network. This kind of applications is supported by an ATM layer service called the available bit rate service (ABR). Applications using the ABR service can expect the following quality of service commitments from the network: 1. The available bandwidth is fairly distributed among all active ABR connections. 2. A minimum cell rate that is agreed upon during the connection establishment phase. 3. Only a preset fraction of the sent celIs can be dropped as long as the sending behavior of the application conforms to the negotiated values.","PeriodicalId":178651,"journal":{"name":"The Fourth IEEE Workshop on High-Performance Communication Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117097131","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 : 1997-06-23DOI: 10.1109/HPCS.1997.864027
D. Song, D. Chi, Youn Jin In, Keung-Hae Lee
OMG's (Object Management Group) CORBA (Common Object Request Broker Architecture) is becoming a common platform for distributed computing environment. However, it is yet to address CSCW (Computer Supported Collaborative Work) ftamework. This paper addresses the problem of building a framework for CSCW and proposes a new CSCW framework based on CORBA (CFC). CFC includes session, participant, mode, directory, stream, media and resource management. A desktop conference system and DSM-CC compliant video-on-demand system were built to demonstrate the usefulness of the framework. The performance of CORBA based CSCW applications is given. The strengths and weaknesses of using a CORBA framework are also discussed.
{"title":"An implementation of a CSCW framework using CORBA","authors":"D. Song, D. Chi, Youn Jin In, Keung-Hae Lee","doi":"10.1109/HPCS.1997.864027","DOIUrl":"https://doi.org/10.1109/HPCS.1997.864027","url":null,"abstract":"OMG's (Object Management Group) CORBA (Common Object Request Broker Architecture) is becoming a common platform for distributed computing environment. However, it is yet to address CSCW (Computer Supported Collaborative Work) ftamework. This paper addresses the problem of building a framework for CSCW and proposes a new CSCW framework based on CORBA (CFC). CFC includes session, participant, mode, directory, stream, media and resource management. A desktop conference system and DSM-CC compliant video-on-demand system were built to demonstrate the usefulness of the framework. The performance of CORBA based CSCW applications is given. The strengths and weaknesses of using a CORBA framework are also discussed.","PeriodicalId":178651,"journal":{"name":"The Fourth IEEE Workshop on High-Performance Communication Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123778794","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 : 1900-01-01DOI: 10.1109/HPCS.1997.864022
R. El-Marakby, D. Hutchison
Our work is concerned with the provision of resource-managed multimedia communications in an. Internet environment. In this paper we outline an architecture and an implementation of a real-time continuous media adaptive application that includes the Real-time Transport Protocol (RTP) and its associated control protocol (RTCP). The application makes use of the RTCP feedback reports for Quality of Service (QoS) monitoring of the traffic load on the network. The feedback reports are utilised by the application's adaptive rate controller to alleviate the problem of network congestion. We are assessing the suitability of RTPfRTCP in this application. Results obtained from our experiments with the adaptive rate controller are described and discussed. Then, some problems and issues concerning adaptive applications are presented. Finally, we outline the next phase of our work which concerns development of management facilities.
{"title":"Towards managed real-time communications in the internet environment","authors":"R. El-Marakby, D. Hutchison","doi":"10.1109/HPCS.1997.864022","DOIUrl":"https://doi.org/10.1109/HPCS.1997.864022","url":null,"abstract":"Our work is concerned with the provision of resource-managed multimedia communications in an. Internet environment. In this paper we outline an architecture and an implementation of a real-time continuous media adaptive application that includes the Real-time Transport Protocol (RTP) and its associated control protocol (RTCP). The application makes use of the RTCP feedback reports for Quality of Service (QoS) monitoring of the traffic load on the network. The feedback reports are utilised by the application's adaptive rate controller to alleviate the problem of network congestion. We are assessing the suitability of RTPfRTCP in this application. Results obtained from our experiments with the adaptive rate controller are described and discussed. Then, some problems and issues concerning adaptive applications are presented. Finally, we outline the next phase of our work which concerns development of management facilities.","PeriodicalId":178651,"journal":{"name":"The Fourth IEEE Workshop on High-Performance Communication Systems","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127541727","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 : 1900-01-01DOI: 10.1109/HPCS.1997.864040
G. Troullinos
A flexible Digital Signal Processing (DSP) oriented approach for implementing secure facsimile (fax) communications systems is presented. The signal processing techniques for fax coding, data encryption, and automatic cryptographic key management based on Public Key cryptography are discussed. The proposed system architecture can exploit the latest advances in DSP microprocessor and VLSI technology to offer lower cost, reduced size, and higher performance cryptosystems. This approach was successfully adopted by Intracorn S.A. in the design and implementation of Secl-ine-Fax secure fax communications system and constitutes the continuation of work on secure voice systems.
{"title":"Digital signal processing techniques and architectures in secure facsimile communications","authors":"G. Troullinos","doi":"10.1109/HPCS.1997.864040","DOIUrl":"https://doi.org/10.1109/HPCS.1997.864040","url":null,"abstract":"A flexible Digital Signal Processing (DSP) oriented approach for implementing secure facsimile (fax) communications systems is presented. The signal processing techniques for fax coding, data encryption, and automatic cryptographic key management based on Public Key cryptography are discussed. The proposed system architecture can exploit the latest advances in DSP microprocessor and VLSI technology to offer lower cost, reduced size, and higher performance cryptosystems. This approach was successfully adopted by Intracorn S.A. in the design and implementation of Secl-ine-Fax secure fax communications system and constitutes the continuation of work on secure voice systems.","PeriodicalId":178651,"journal":{"name":"The Fourth IEEE Workshop on High-Performance Communication Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131287920","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：