Pub Date : 1996-05-07DOI: 10.1109/ETACOM.1996.502476
A. Hác, Dongchen Lu
A new multimedia conference system is designed and implemented. The system allows a group of users to conduct a meeting in real time. Participants can jointly view and edit relevant multimedia information, including text, graphics, and still images distributed throughout the network. Participants can also communicate simultaneously by voice to discuss the information they are sharing. This multimedia conference system can be used in a wide variety of cooperative work environment, such as distributed software development, joint authoring, and group decision support.
{"title":"Architecture and implementation of a multimedia conference system","authors":"A. Hác, Dongchen Lu","doi":"10.1109/ETACOM.1996.502476","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502476","url":null,"abstract":"A new multimedia conference system is designed and implemented. The system allows a group of users to conduct a meeting in real time. Participants can jointly view and edit relevant multimedia information, including text, graphics, and still images distributed throughout the network. Participants can also communicate simultaneously by voice to discuss the information they are sharing. This multimedia conference system can be used in a wide variety of cooperative work environment, such as distributed software development, joint authoring, and group decision support.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116652669","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502508
S. Vuong, L. Mathy
WAVE is a novel paradigm and programming environment based on the concept of mobile intelligent agents. It allows intelligent mobile agents to roam in networks of arbitrary topology in a highly parallel and completely distributed manner. We show how WAVE can be effectively used in the simulation of the mobile-IP protocol. After a brief introduction of the WAVE paradigm and the mobile-IP protocol, we describe in details the features of our mobile-IP simulator. The advantages of using WAVE in the simulation of mobile-IP protocols are discussed, including generality, flexibility, extensibility, visualization and fast prototyping. Potential disadvantages are also presented, including its unsuitability for performance evaluation due to inherent lack of time features in the language.
{"title":"Simulating the mobile-IP protocol using WAVE","authors":"S. Vuong, L. Mathy","doi":"10.1109/ETACOM.1996.502508","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502508","url":null,"abstract":"WAVE is a novel paradigm and programming environment based on the concept of mobile intelligent agents. It allows intelligent mobile agents to roam in networks of arbitrary topology in a highly parallel and completely distributed manner. We show how WAVE can be effectively used in the simulation of the mobile-IP protocol. After a brief introduction of the WAVE paradigm and the mobile-IP protocol, we describe in details the features of our mobile-IP simulator. The advantages of using WAVE in the simulation of mobile-IP protocols are discussed, including generality, flexibility, extensibility, visualization and fast prototyping. Potential disadvantages are also presented, including its unsuitability for performance evaluation due to inherent lack of time features in the language.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"435 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122927408","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502467
G.S. Antonova, L.N. Schezovanov, S. Vuong
In this paper, we propose and discuss a universal digital simulation model for synchronization networks, which can be applied to SONET/SDH networks of arbitrary structures. This model is derived from the models of the slave clock and of the synchronization link, which take into consideration all important impairments such as jitter, wander, frequency offset, phase hop, as well as phase and clock noises. Preliminary simulation results are also discussed.
{"title":"A universal simulation model for SONET/SDH synchronization networks","authors":"G.S. Antonova, L.N. Schezovanov, S. Vuong","doi":"10.1109/ETACOM.1996.502467","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502467","url":null,"abstract":"In this paper, we propose and discuss a universal digital simulation model for synchronization networks, which can be applied to SONET/SDH networks of arbitrary structures. This model is derived from the models of the slave clock and of the synchronization link, which take into consideration all important impairments such as jitter, wander, frequency offset, phase hop, as well as phase and clock noises. Preliminary simulation results are also discussed.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123849222","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502497
P. M. Gerhardt
The Multimedia Communications eXchange (MMCX) product provides multimedia (voice, video and data) desktop collaboration. The MMCX client/server architecture supports multimedia calling between endpoints on the local area network, and also provides access to the wide area network. The MMCX endpoints can make multimedia calls across the WAN in multiserver networks, and can place audio calls to traditional voice endpoints, for example, telephones connected to PBXs and the public switched telephone network. This paper describes the LAN and WAN technologies and protocols supported by Release 1 of the MMCX product. It also covers the performance characteristics (delay and bandwidth requirements) of each media (voice, video and data) and well as the bandwidth management capabilities of the MMCX client/server architecture.
{"title":"Multimedia Communications eXchange (MMCX) local and wide area network considerations","authors":"P. M. Gerhardt","doi":"10.1109/ETACOM.1996.502497","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502497","url":null,"abstract":"The Multimedia Communications eXchange (MMCX) product provides multimedia (voice, video and data) desktop collaboration. The MMCX client/server architecture supports multimedia calling between endpoints on the local area network, and also provides access to the wide area network. The MMCX endpoints can make multimedia calls across the WAN in multiserver networks, and can place audio calls to traditional voice endpoints, for example, telephones connected to PBXs and the public switched telephone network. This paper describes the LAN and WAN technologies and protocols supported by Release 1 of the MMCX product. It also covers the performance characteristics (delay and bandwidth requirements) of each media (voice, video and data) and well as the bandwidth management capabilities of the MMCX client/server architecture.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125798203","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502469
Wonho Yang, R. Yantorno
Speech quality, with cell losses in an ATM network, has been evaluated previously using random cell loss rates. However, it has been shown that cell loss behavior for speech transmission in ATM is more appropriately described by the burst model due to the burstiness properties of the aggregate voice cell arrival process. A mathematical model, called the burst model for cell loss behavior in an ATM network, has been developed. The burst model predicts cell loss behavior very accurately as link capacity increases. According to the burst model, it has been calculated that SNRseg decreases by 1.5 dB at the link load of 98% for the STS-3C link.
{"title":"Development of a burst model for speech transmission with cell losses in an ATM network","authors":"Wonho Yang, R. Yantorno","doi":"10.1109/ETACOM.1996.502469","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502469","url":null,"abstract":"Speech quality, with cell losses in an ATM network, has been evaluated previously using random cell loss rates. However, it has been shown that cell loss behavior for speech transmission in ATM is more appropriately described by the burst model due to the burstiness properties of the aggregate voice cell arrival process. A mathematical model, called the burst model for cell loss behavior in an ATM network, has been developed. The burst model predicts cell loss behavior very accurately as link capacity increases. According to the burst model, it has been calculated that SNRseg decreases by 1.5 dB at the link load of 98% for the STS-3C link.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"13 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120840878","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502478
R. Vetter, ChristopheI Jonalagada
This paper describes a multimedia system called MWEB that is capable of recording and playing back classroom sessions over the Multicast Backbone (MBone) on the Internet. World Wide Web (WWW) clients are used as a front-end for the MWEB system. Offered media include audio, video and shared whiteboard. The goal of the MWEB system was to enhance the capability of an on-going virtual classroom project at North Dakota State University by providing a means for students to access previously recorded classroom sessions from any general purpose computer workstation attached to the Internet.
{"title":"A multimedia system for asynchronous collaboration using the Multicast Backbone and the World Wide Web","authors":"R. Vetter, ChristopheI Jonalagada","doi":"10.1109/ETACOM.1996.502478","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502478","url":null,"abstract":"This paper describes a multimedia system called MWEB that is capable of recording and playing back classroom sessions over the Multicast Backbone (MBone) on the Internet. World Wide Web (WWW) clients are used as a front-end for the MWEB system. Offered media include audio, video and shared whiteboard. The goal of the MWEB system was to enhance the capability of an on-going virtual classroom project at North Dakota State University by providing a means for students to access previously recorded classroom sessions from any general purpose computer workstation attached to the Internet.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114810944","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502489
R. Fowler, A. Kumar, J.L. Williams
In order to realize the potential of the World Wide Web (WWW) to supply information it will be necessary to significantly increase the effectiveness of existing search and retrieval mechanisms. One promising approach is visualization, which has been used successfully in an wide range of domains to provide insight into the organization of complex systems, The Document Explorer system creates a visual browsing environment for WWW documents based on semantic content, rather than on link structure such as used in other WWW browsing and visualization tools. Existing WWW indexing and content extraction tools are used together with new techniques for graph based abstraction and clustering to present dynamic, visualization of content based three dimensional space.
{"title":"Visualizing and browsing WWW semantic content","authors":"R. Fowler, A. Kumar, J.L. Williams","doi":"10.1109/ETACOM.1996.502489","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502489","url":null,"abstract":"In order to realize the potential of the World Wide Web (WWW) to supply information it will be necessary to significantly increase the effectiveness of existing search and retrieval mechanisms. One promising approach is visualization, which has been used successfully in an wide range of domains to provide insight into the organization of complex systems, The Document Explorer system creates a visual browsing environment for WWW documents based on semantic content, rather than on link structure such as used in other WWW browsing and visualization tools. Existing WWW indexing and content extraction tools are used together with new techniques for graph based abstraction and clustering to present dynamic, visualization of content based three dimensional space.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126636133","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502501
Yi-Chiun Chen, C. Lee
This paper exploits how the interference suppression capability of the front-end RF filter in a cellular base station affects the performance characteristics of a dual CDMA cellular communication system. Analytical results of degradation on CDMA system performance in the presence of intersystem interference is analyzed, where the intersystem interference is caused by intermodulation between two neighboring channel signals associated respectively with two competing cellular service providers in a given geographic area. Because of user mobility and CDMA power control, such interference introduced by the rival system cars can be very significant at the cell site receiver and drastically impacts the performance. The superior intermodulation suppression ability of a high-temperature superconductor (HTSC) RF front-end filter at a CDMA base station receiver is shown to be critical for the system performance in this paper.
{"title":"Superconductor RF filtering and CDMA capacity","authors":"Yi-Chiun Chen, C. Lee","doi":"10.1109/ETACOM.1996.502501","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502501","url":null,"abstract":"This paper exploits how the interference suppression capability of the front-end RF filter in a cellular base station affects the performance characteristics of a dual CDMA cellular communication system. Analytical results of degradation on CDMA system performance in the presence of intersystem interference is analyzed, where the intersystem interference is caused by intermodulation between two neighboring channel signals associated respectively with two competing cellular service providers in a given geographic area. Because of user mobility and CDMA power control, such interference introduced by the rival system cars can be very significant at the cell site receiver and drastically impacts the performance. The superior intermodulation suppression ability of a high-temperature superconductor (HTSC) RF front-end filter at a CDMA base station receiver is shown to be critical for the system performance in this paper.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134462643","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502491
K. Voegele, K. Weingartner
In the same way that the IMAP protocol provides secure, ubiquitous access to a user's email, an analogous protocol is desirable to enable user access to an organized collection of URL links that comprise a private mapping of the Web document space. This paper describes the design and staged implementation of a SLINKY server that meets these goals.
{"title":"SLINKY: a URL server","authors":"K. Voegele, K. Weingartner","doi":"10.1109/ETACOM.1996.502491","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502491","url":null,"abstract":"In the same way that the IMAP protocol provides secure, ubiquitous access to a user's email, an analogous protocol is desirable to enable user access to an organized collection of URL links that comprise a private mapping of the Web document space. This paper describes the design and staged implementation of a SLINKY server that meets these goals.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132823122","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 : 1996-05-07DOI: 10.1109/ETACOM.1996.502484
T. Nguyen, T. Remy, K. Sistanizadeh
The paper presents the results from signal attenuation due to trees, and radar interference testing conducted on the multichannel multipoint distribution service (MMDS), in operation at Virginia Beach, VA. The test data collected provides valuable information on the effects of attenuation caused by the foliage of trees common to the area, and interference from an aviation radar system.
{"title":"Attenuation and interference measurements conducted by Bell Atlantic to investigate the effect on an operational multichannel multipoint distribution service (MMDS)","authors":"T. Nguyen, T. Remy, K. Sistanizadeh","doi":"10.1109/ETACOM.1996.502484","DOIUrl":"https://doi.org/10.1109/ETACOM.1996.502484","url":null,"abstract":"The paper presents the results from signal attenuation due to trees, and radar interference testing conducted on the multichannel multipoint distribution service (MMDS), in operation at Virginia Beach, VA. The test data collected provides valuable information on the effects of attenuation caused by the foliage of trees common to the area, and interference from an aviation radar system.","PeriodicalId":130942,"journal":{"name":"Proceedings of COM'96. First Annual Conference on Emerging Technologies and Applications in Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122117895","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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