IEEE Personal Communications最新文献_第3页

Personal Communications Services In The Far East 远东地区的个人通讯服务

IEEE Personal Communications Pub Date : 1997-04-01 DOI: 10.1109/MPC.1997.590669

K. Chua, Kwang-Cheng Chen, K. Lye

引用次数: 1

Mobile Telecommunications: emerging European Markets 移动通信:新兴的欧洲市场

IEEE Personal Communications Pub Date : 1996-10-01 DOI: 10.1109/MPC.1996.542232

A. Jayakumar

{"title":"Mobile Telecommunications: emerging European Markets","authors":"A. Jayakumar","doi":"10.1109/MPC.1996.542232","DOIUrl":"https://doi.org/10.1109/MPC.1996.542232","url":null,"abstract":"If y o u have cver wondered why t h e Nordic countries have such a technological edge in mobile communications as evidenced by t h e global leadership of companies like Ericsson, Nokiain wireless technology and the prevalence of the NMT (Nordic Mobile Te lephone) systems throughout theworld, this bookmight give you an answer. Or if you wanted to know how the Communists throttled the development of telecommunications in Central and Eastern Europe (CEE) before their cventual downfall, this bookwill tell it detail. Packed with solidly researched data and written in a prosaic, staid style, this book documents the status of telecommunications, fixed and mobile, from different perspectives historical, market oriented, technological, a n d regulatory in t h e newly liberated CEE countries. The editors and contributors to thisvolume are academics from various universities andresearchinstitutesinEuropewith specialization in telecommunications, business and economics. The emerging European markets covered are the countries of Hungary, Poland, Czech, Lithuania, Estonia and Latvia and the former East Germany. Sweden and Austria are also described as a study in contrast. The last three chapters are devoted to a comparative analysis of the countries represented, which is mainly a rehash of the data given in the previous chapters. A large appendix full of telecommunications statistics of the above mentioned countries would be the envy of any self respecting almanac. T h e most interesting chapters a re that of Sweden and Germany. Sweden offers a text book case of how a state controlled monopoly can leverage the power of competition for general welfare . T h e book describes the innovations, both technological and marketing, by Swedish Telecom (now Telia) that led to its leadership in mobile telephony. With its early head start, initially with the MobileTelephone SystemA (MTA) in the 1940s, Telia skillfully managed the development and marketing of wireless communications which led to the success of later systems such as the NMT 450 and NMT 900 and to the present day evolution of GSM. Telia pioneered the concept of selling portable telephones through mass market retail outlets which led its phenomenal success. The earlyrecognition (in the 1970s) by Ericsson to actively support mobile telephony in its= telephone switch enabled it to gain over 70% market share of GSM systems today. The unified Germany is portrayed as a special case where the development of telecommunications infrastructure in the former East Germany was rapid due to the deep pockets of Deutsche Bundespost (DBP) Telekom. This rapid overinvestment brought the telecommunications infrastructure on par with its western counterpart in a fairly short amount of time. The surprise here is that the initial explosive growth in mobile communications was a response to a lack of fixed wireline telephony and as the latter became more widely available the demand for wireless telephony dropped. This can be contrast","PeriodicalId":332944,"journal":{"name":"IEEE Personal Communications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121048047","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

Wireless ATM 无线ATM

IEEE Personal Communications Pub Date : 1996-08-01 DOI: 10.1109/MPC.1996.536474

M. Naghshineh

{"title":"Wireless ATM","authors":"M. Naghshineh","doi":"10.1109/MPC.1996.536474","DOIUrl":"https://doi.org/10.1109/MPC.1996.536474","url":null,"abstract":"ecent advances in the design and development of portable devices capable of wireless communications coupled with the development and deployment of asynchronous transfer mode (ATM) has brought us to the beginning of a new era in networking. ATM is designed to support high-bandwidth multimedia applications, and to provide bandwidth on demand, traffic integration, cost effectiveness, and flexible data networking. Bearing in mind that networking applications are focusing on multimedia services and ubiquitous information access, intensified by the birth of the World Wide Web, ATM is viewed as a strong candidate for support of such serviceswhich can be extended to portable devices using wireless techspecificsystem architectures and report on experiences based on designing such systems. In the first article, “Wireless ATM: A Perspective on Issues and Challenges,” Acampora provides an overview ofwireless andwired ATM physical layer and networking issues and proceeds to present a review of a system architecture to support wireless ATM. The second article, “Wireless ATM: Limits, Challenges, and Proposals” by Ayanoglu, Eng, and Karol, provides a discussion of wireless physical layer, media access layer, and networking alternatives. In addition, it presents a summary of a number of proposals to build wireless ATM systems published in the literature. In the third artiMAHMoUD NAGHSHINEH","PeriodicalId":332944,"journal":{"name":"IEEE Personal Communications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133091072","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: 33

Mobile Computing at Carnegie Mellon [Guest Editors' Note] 卡内基梅隆大学的移动计算课程[客座编者注]

IEEE Personal Communications Pub Date : 1996-02-01 DOI: 10.1109/MPC.1996.486971

M. Satyanarayanan

引用次数: 5

Cellular Radio: Analog and Digital Systems [Book Reviews] 蜂窝无线电:模拟和数字系统[书评]

IEEE Personal Communications Pub Date : 1996-02-01 DOI: 10.1109/MPC.1996.486970

T. Brown

{"title":"Cellular Radio: Analog and Digital Systems [Book Reviews]","authors":"T. Brown","doi":"10.1109/MPC.1996.486970","DOIUrl":"https://doi.org/10.1109/MPC.1996.486970","url":null,"abstract":"Understanding cellular radio technology requires an understanding of the engineering issues in the complex mobile radio environment as well as the higher-level issues necessary to build a complete system. The author has simultaneously released two books. The first covers the underlying technology related to the radio environment [l]. The second, reviewed here, covers cellular concepts, traffic engineering, existing standards, and base stationlintersystem networking for a cellular system. The book is based on information from many journal articles, technical reports, and government documents. The author draws on his years of industrial and academic communication systems experience. For interested readers desiring more information, each chapter has many references. There a re problem sets at the end of each chapter, so this is a suitable textbook for a senior or graduate course in cellular principles. The book has nine chapters and several appendices with traffic tables and formulas. The first four chapters treat analog cellular with a focus on the venerable American analog Advanced Mobile Phone System (AMPS). Chapter 1 quickly sketches the cellular environment along with some historical perspective. From here it dives into the main topic. Chapter 2 introduces the cellular concept, including cellular geometry, cell splitting, and signal-to-interference ratios. It then goes on to cover important details of the AMPS air interface standard such as cellular phone numbering schemes and how they fit into the North American numbering plan, control channel features, and extensive coverage of call setup, handoff, and terminat ion sequences. It f inishes with design considerations unique to rural service areas. This chapter is the heart of the book. Once through this chapter, the reader can pick and choose as desired from the remaining chapters. Chapter 3 introduces traffic analysis with a good example of utilizing marketing and census data to generate percell traffic loads. I t also breaks down users into types and analyzes the traffic demands of each. Based on this analysis, it describes how to allocate voice and control channel resources to meet these demands. It also discusses various fixed and dynamic channel allocation schemes. Chapter 4 describes technical parameters common to many analog systems such as companding, modulation, handoff processes, and synchronization. Continuing from Chapter 2, it covers more details specific to the AMPS air interface and then embarks on a comprehensive survey of first-generation analog cellular systems from Canada, Japan, Scandinavia, Germany, and the U.K., highlighting similarities and differences in the technology and regulatory/market drivers that led to the technology choices. The chapter finishes with a snapshot of the world cellular market. Chapter 5 is a digression on design considerations for radio repeaters used for filling in coverage gaps at fringe, hole, indoor, and tunnel locations. Chapter 6 covers spect","PeriodicalId":332944,"journal":{"name":"IEEE Personal Communications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127318931","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

Personal Communications on the World Wide Web, Editor's Message 万维网上的个人通信，编辑的信息

IEEE Personal Communications Pub Date : 1995-12-01 DOI: 10.1109/MPC.1995.475981

H. Ahmadi

引用次数: 1

Issues in Mobile Computing Systems, Guest Editors' Note 《移动计算系统中的问题》，客座编者注

IEEE Personal Communications Pub Date : 1995-12-01 DOI: 10.1109/MPC.1995.475984

M. Mazer, P. Kermani, H. Chang

引用次数: 6

Analyzing the trade off between implementation costs and performance: PCS Channel Assignment Strategies for Hand-off and Initial Access 分析实现成本和性能之间的权衡:交接和初始访问的PCS信道分配策略

IEEE Personal Communications Pub Date : 1994-09-01 DOI: 10.1109/MPC.1994.311831

Yi-Bing Lin, S. Mohan, A. Noerpel

{"title":"Analyzing the trade off between implementation costs and performance: PCS Channel Assignment Strategies for Hand-off and Initial Access","authors":"Yi-Bing Lin, S. Mohan, A. Noerpel","doi":"10.1109/MPC.1994.311831","DOIUrl":"https://doi.org/10.1109/MPC.1994.311831","url":null,"abstract":"YI-BING LIN, SESHADRI MOHAN, AND ANTHONY NOERPEL ersonal communications is expected to provide low-power/high-quality wireless access to the public switched telephone network (PSTN) [4,5]. The service area of a network providing personal communications services (PCS) is populated with a large number of ports, with each port providing coverage in its vicinity. Each port is assigned a group of channels (time slots, frequencies, spreading codes, or a combination of these) that can be either fixed or dynamic. This article assumes a fixed or quasi-static channel assignment [9]. The results may be extensible to dynamic channel assignment schemes [lo]. When a subscriber wishes to make or receive a phone call, the portable attempts to seize an available traffic channel for the call. For some PCS radio systems, the portable launches an access request on a common signaling channel and is then directed to a traffic channel (CT-2 Plus [14]). In other PCS radio systems the access attempt can be made directly on an available traffic channel (DECT [8], or Bellcore WACS [l]’). Owing to the limited number of servers or transceivers in a port, when a port is blocked there is no idle transceiver for the signaling channel. There is usually no provision (either no channel or no protocol, or both) for a portable to signal the need for a traffic channel to a blocked port and therefore access attempts cannot be queued by the network. If there is no available traffic channel or common signaling channel, the call is blocked. (An exception to this is the WACS system, which reserves a time slot channel called the system broadcast channel.) If there is an available traffic channel it is used for the call. The channel is released eitherwhen the call iscompleted or the portable (or the PCS subscriber) moves out of the coverage area. When a user moves from one coverage area to another while a call is in progress, a hand-off to the new port is required to maintain continuity and quality of the call. If the new port does not have an idle channel, the call may be dropped o r forced terminated. The forced termination probability is an important criterion in the performance evaluation of a PCS network. Forced termination of an ongoing call is considered less desirable than blocking of a new call attempt. Radio tech-","PeriodicalId":332944,"journal":{"name":"IEEE Personal Communications","volume":"9 13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124680404","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: 60

A mobile networking system based on Internet protocol 基于Internet协议的移动网络系统

IEEE Personal Communications Pub Date : 1993-08-02 DOI: 10.1109/98.911984

C. Perkins, P. Bhagwat

{"title":"A mobile networking system based on Internet protocol","authors":"C. Perkins, P. Bhagwat","doi":"10.1109/98.911984","DOIUrl":"https://doi.org/10.1109/98.911984","url":null,"abstract":"Users of portable computers would like to carry their laptops with them whenever they move from one place to another and yet maintain transparent network access through the wireless link. The existing set of network protocols do not meet this requirement since they were designed under the assumption of a stationary network topology in which hosts do not change their location over time. The authors' approach, which is based on the use of a natural model and an existing IP option, does not introduce any new protocol and achieves optimal routing. The solution is transparent to transport and higher layers, and does not require any changes to stationary hosts and routers. The model is natural, because the authors coordinate a collection of mobile hosts (MHs) as a new IP network. They route packets to the MHs by using a router. The router is special because once it receives a packet, it does special things to ensure its safe delivery to its destination (the MH). This special operation is invisible to existing hosts and routers, so all the routing difference due to movement of the hosts can be hidden and effected by mechanisms under the control of the special entities. The other part of the model, which is a very natural part of a physical wireless data communications system, is the transceiver (access point), which collects wireless packets from a MH for delivery to existing hosts along existing wired networks. This transceiver provides the reference point by which the location of the MH is known.","PeriodicalId":332944,"journal":{"name":"IEEE Personal Communications","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123461120","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: 135

Coexistence and access etiquette in the United States unlicensed PCS band 在美国无牌PCS波段共存与接入礼仪

IEEE Personal Communications Pub Date : 1900-01-01 DOI: 10.1109/MPC.1994.337510

D. Steer

引用次数: 36