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Proceedings of GLOBECOM '95最新文献

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Performance evaluation of connectionless service for ATM networks ATM网络无连接业务性能评价
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502537
D. Hong, T. Suda
{"title":"Performance evaluation of connectionless service for ATM networks","authors":"D. Hong, T. Suda","doi":"10.1109/GLOCOM.1995.502537","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502537","url":null,"abstract":"This paper investigates the performance of the direct approach to connectionless service over ATM. The direct approach utilizes connectionless servers, attached to or incorporated in a subset of the ATM switches, to provide a packet switching service. The number of connectionless servers and ATM connections utilized by the direct approach is found analytically and compared to alternative approaches. Furthermore, the effects of two architectural options that significantly impact the performance of connectionless servers, the packet forwarding scheme (packet-based and cell-based) and the flow control scheme (static rate control and a dynamic proportional rate control) are also evaluated.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129665732","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}
引用次数: 3
Estimation of SS7 traffic in UMTS network UMTS网络中SS7流量的估计
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502812
M. Ostrowski
{"title":"Estimation of SS7 traffic in UMTS network","authors":"M. Ostrowski","doi":"10.1109/GLOCOM.1995.502812","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502812","url":null,"abstract":"In this paper, we present a general model for the prediction of signaling traffic in a network where the terminal mobility shares the signaling infrastructure of fixed services. The model uses state transitions to estimate calling patterns and usage of services. In addition, methods of mapping state transitions to physical movements are presented. We examine a number of dynamic phenomena observed in pedestrian traffic, including platooning effects, the relationship between speed and density, and the effect of traffic lights on pedestrian flow distribution. Finally, the results of a simulation study are presented, and the model's application to the prediction of distribution of both inbuilding and outdoor offered calling traffic is demonstrated. We illustrate the resulting observed signaling traffic by taking the interface points of the IS-136a standard as an example.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127377067","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}
引用次数: 0
Cell selection in two-tier microcellular/macrocellular systems 双层微细胞/巨细胞系统中的细胞选择
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502658
M. Benveniste
{"title":"Cell selection in two-tier microcellular/macrocellular systems","authors":"M. Benveniste","doi":"10.1109/GLOCOM.1995.502658","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502658","url":null,"abstract":"Because hand-off limitations restrict the deployment of microcells to slow-moving mobiles, a two-tier cellular system is considered to cover areas with mobiles moving at different speeds. Such systems consist of microcells embedded within macrocells. The microcells cover the slow-moving mobiles and the macrocells the rest. The selection of a cell to serve a call must now be based not only on the received signal strength, but also on the speed of the mobile. A simple procedure for cell selection had been proposed, which prevents the microcellular system from carrying the full call traffic load it is capable of. We calculate this capacity loss and find it to be 43 per cent for pedestrian-held mobiles moving at an average speed of 5 km/hr inside a 600-meter microcell. The capacity loss is higher for faster moving mobiles. We propose an alternative procedure for cell selection, which preserves the simplicity of the original procedure but causes lower capacity losses. The case of a mobile changing speed is also addressed.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129023793","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}
引用次数: 29
Network traffic management for new technologies: myths and facts 新技术的网络流量管理:神话与事实
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.500280
C. Pack
{"title":"Network traffic management for new technologies: myths and facts","authors":"C. Pack","doi":"10.1109/GLOCOM.1995.500280","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.500280","url":null,"abstract":"In a highly competitive environment, there are always real business risks for carriers, equipment suppliers, service providers and users. Customers expect and demand high quality and economic service under almost any condition, including network overloads, outages or disasters. Therefore, significant or sustained service degradation can result in lost business and reputation. With that in mind, it is important to understand that traffic management for emerging technologies, architectures and services, including common channel signaling, AIN, wireless, ISDN packet, fast packet, ATM and video, will be especially difficult. The popular support for some common teletraffic \"myths\", combined with very high growth and complex demand patterns, contribute to the problem. This paper will overview some key issues, myths and facts regarding traffic management challenges.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130766222","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}
引用次数: 2
A predistorter design for a memory-less nonlinearity preceded by a dynamic linear system 动态线性系统前无记忆非线性的预失真器设计
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.500342
Changsoo Eun, E. Powers
{"title":"A predistorter design for a memory-less nonlinearity preceded by a dynamic linear system","authors":"Changsoo Eun, E. Powers","doi":"10.1109/GLOCOM.1995.500342","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.500342","url":null,"abstract":"We propose a data predistorter design scheme for a memory-less nonlinearity which is preceded by a linear system with memory. This system configuration is often found in telecommunications. The predistorter technique is useful since the compensation of the nonlinearity of high-power amplifiers allows the efficient use of the power resource and bandwidth, while maintaining the prescribed signal spectral distribution. We use either a modified indirect learning architecture or a stochastic gradient method for training the predistorters. As a predistorter structure, we use a Volterra series model or a time-delayed neural network. We apply our approach to the compensation of various nonlinear systems including TWT-type nonlinearities. The results show that our approach is very effective in compensating the memory-less nonlinearity preceded by a linear system with memory. We show the results for nonlinear systems with a TWT-type nonlinearity.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132860275","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}
引用次数: 56
A current Bellcore view of SONET ATM VP rings 当前Bellcore对SONET ATM副总裁戒指的看法
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.500218
J. Sosnosky, H. Kobrinski
{"title":"A current Bellcore view of SONET ATM VP rings","authors":"J. Sosnosky, H. Kobrinski","doi":"10.1109/GLOCOM.1995.500218","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.500218","url":null,"abstract":"This paper reviews the generic requirements and plans for SONET ATM VP rings. It provides a perspective on where SONET ATM VP ring technology is and the issues facing this technology. This view is based on requirements work done at Bellcore and interaction with industry on supporting the ATM VP ring concept. SONET ring equipment with ATM VP functionality is expected to process and add-drop ATM cells at the ATM VP layer. The goal of this architecture is to gain an improved SONET transport efficiency for ATM cell traffic. This paper shows why ATM VP functionality in SONET rings is an attractive network transport technology.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131933768","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}
引用次数: 6
Architecture of an emulator testbed for heterogeneous ATM/STM networks 异构ATM/STM网络仿真试验台的体系结构
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.500358
K. Padmanabhan, S. Lo, A. Lapone
{"title":"Architecture of an emulator testbed for heterogeneous ATM/STM networks","authors":"K. Padmanabhan, S. Lo, A. Lapone","doi":"10.1109/GLOCOM.1995.500358","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.500358","url":null,"abstract":"This paper describes the architecture of a network emulator designed and built at AT&T Bell Laboratories to model, design, and analyze high speed networks, particularly heterogeneous ATM/STM systems. The Bell Labs Network Emulator (BENE) serves as a testbed for several experiments involving transport of applications such as voice, video/conferencing, and fax/voice-band data over such networks.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132072124","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}
引用次数: 0
A packet channel sharing protocol for dynamic channel assignment systems 一个用于动态信道分配系统的分组信道共享协议
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502585
H. Kayama, T. Ichikawa
{"title":"A packet channel sharing protocol for dynamic channel assignment systems","authors":"H. Kayama, T. Ichikawa","doi":"10.1109/GLOCOM.1995.502585","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502585","url":null,"abstract":"A major trend in mobile communications is the development of digital cordless telephone systems such as PHS and DECT for personal communications. These systems offer higher channel speeds than existing cellular systems, and should support data transmission as well as voice. This paper proposes a new packet channel provisioning method for sharing TDMA radio channels with circuit-switched calls for dynamic channel assignment systems. The method is characterized by a two step random-access mechanism; the first step is carrier sensing to obtain an available TDMA channel for packet transmission. The next step is the application of a reservation-grant based random-access protocol for multiplexing terminals on the packet channel. The characteristics of this protocol are evaluated using a computer simulation based on a 4-channel TDMA/TDD. The results clarify the advantage of the method in terms of channel efficiency.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127881040","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}
引用次数: 2
A modified time-shared code tracking loop for frequency hopping systems 一种改进的跳频系统分时码跟踪环路
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502733
T. Saba, D. Park, S. Mori
{"title":"A modified time-shared code tracking loop for frequency hopping systems","authors":"T. Saba, D. Park, S. Mori","doi":"10.1109/GLOCOM.1995.502733","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502733","url":null,"abstract":"A modified time-shared code tracking loop (MTSL) for frequency-hopped signals is presented. The tracking performance of the MTSL in the presence of white Gaussian noise is analyzed. An analytical expression for the code tracking jitter performance is derived and plotted, and the results compared to those obtained for the traditional time-shared loop (TTSL) and the traditional full-time loop (TFTL). Results show that the MTSL obtains a code tracking jitter less than those of the TTSL and the TPTL for given S/N.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127893233","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}
引用次数: 0
Design of multilevel coded M-ary CPFSK systems with modulation index 1/2 调制指数为1/2的多电平编码M-ary CPFSK系统的设计
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502008
I. Altunbas, U. Aygolu
{"title":"Design of multilevel coded M-ary CPFSK systems with modulation index 1/2","authors":"I. Altunbas, U. Aygolu","doi":"10.1109/GLOCOM.1995.502008","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502008","url":null,"abstract":"In this paper, based on multilevel coding and multistage decoding techniques, multilevel schemes for M-ary continuous phase frequency shift keying (CPFSK) with modulation index 1/2 are introduced. At each level of the multilevel system classical or punctured convolutional codes and at the last level, where the phase continuity is satisfied, fast frequency shift keying (FFSK) codes are used. The new systems with M=4, 8 and 16 are compared with corresponding previously designed schemes and uncoded cases. It is shown that the proposed systems have coding gain and decoding complexity advantages.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127920915","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}
引用次数: 1
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