By Topic

Proceedings of 1994 3rd IEEE International Conference on Universal Personal Communications

Sept. 27 1994-Oct. 1 1994

Filter Results

Displaying Results 1 - 25 of 134
  • AIN service creation and issues

    Publication Year: 1994
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (37 KB)

    Summary form only given, as follows. As second-generation AIN implementations go into operation in networks around the world, the focus of attention continues to move towards the service creation environment and services. The vision of rapid service delivery, customer programmability, and vendor independence promised by AIN is still not a reality. In addition to this is the growing vision of commo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Service creation: the real key to intelligent network revenue

    Publication Year: 1994
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (43 KB)

    Summary form only given, as follows. The main driver behind the implementation of the advanced intelligent network is the ability to quickly develop and deploy new revenue producing services. These services need to be developed for a variety of network platforms and must enable the service provider to quickly and easily modify them. Since it is highly unlikely that a meaningful standard for servic... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wireless data in a dissimilar multiple network environment

    Publication Year: 1994
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (35 KB)

    Summary form only given. Wireless data networks are unique in that there are three key aspects to a complete solution: the network, the radio modem and the application. As wireless data networks emerged, the focus was on architecting the network and designing small, power efficient modems. Little effort was focused on the connectivity of the network (and modem) to higher operating systems and appl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Network infrastructure wholesale opportunities for PCS retailers

    Publication Year: 1994
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (37 KB)

    Summary form only given, as follows. Building a PCS network infrastructure quickly is critical for the PCS providers' success in the wireless market. Utilizing another network provider's infrastructure may be an optimal solution for PCS providers to meet their network build-out demands dictated by the FCC license requirements and market competition. This paper presents the methodology and results ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A security architecture for UPT

    Publication Year: 1994
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (35 KB)

    Summary form only given. By using a universal personal number, universal personal telecommunications (UPT) enable an enhanced access to multiple networks (wired and wireless) at any terminal. A high level of security is a necessary condition for a service like UPT. Accountability, incontestable charging, and privacy are important examples of requirements that have to be fulfilled by technical and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Proceedings of 1994 3rd IEEE International Conference on Universal Personal Communications

    Publication Year: 1994
    Request permission for commercial reuse | PDF file iconPDF (63 KB)
    Freely Available from IEEE
  • Performance of a simulated QPSK TDMA radio link with analog FM interference

    Publication Year: 1994, Page(s):104 - 108
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    A software simulation of a QPSK TDMA radio link subject to interference from analog FM mobile radio is described. Log-normal shadowing and multipath fading are simulated by superposing a finite number of random paths. The channel impulse response h(t) is assumed to be finite and constant for the duration of a transmission burst. A recursive algorithm is used to estimate h(t) for each burst, in ord... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Channel information assisted reuse partitioning-a distributed dynamic channel assignment algorithm based on reuse partitioning

    Publication Year: 1994, Page(s):536 - 540
    Cited by:  Papers (1)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    A new practical algorithm is proposed for dynamic channel assignment (DCA) for microcellular systems. The algorithm, called “channel information assisted reuse partitioning (CIRP),” employs information on assigned channel number versus signal level measured at each base station. The information is utilized to assign a new channel, and is updated in each assignment process in a distribu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evaluation studies of DDB architecture with hierarchical structure

    Publication Year: 1994, Page(s):345 - 349
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    In this paper we analyse the performance of a distributed database (DDB) architecture for universal mobile telecommunication systems (UMTS), in the presence of location updating and interrogation mobility procedures. To that end, two data locating strategies have been considered; the R and the V strategies which determine the path to be followed by a query originated by a location updating or by a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Novel packet transmission scheme for personal communication systems

    Publication Year: 1994, Page(s):516 - 520
    Cited by:  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    This paper proposes a novel packet transmission scheme for personal communication systems in the slow fading environments. The throughput of personal communication systems using packet data transmission can be decreased by the bit errors caused by the slow fading generated when the portable sets (PS) are used while walking. The proposed selective reject protocol with acknowledgment (ACK) transmiss... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Power control in CDMA systems: performance evaluation and system design implications

    Publication Year: 1994, Page(s):73 - 77
    Cited by:  Papers (2)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    It is well known that a tight power control is required in CDMA mobile systems to avoid the `near-far' effect. In this paper, the performance of a closed loop power control (CLPC) system is evaluated by simulation in realistic operating environments. The residual signal-to-noise ratio fluctuation at the base station receiver is reported, not only in terms of standard deviation, but also in terms o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interoperable licensed and unlicensed wireless access for PCS

    Publication Year: 1994, Page(s):109 - 113
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The FCC allocated 120 MHz of licensed spectrum and 20 MHz of unlicensed spectrum near 2 GHz for personal communications services (PCS). Licensed spectrum is likely to be used for public access in most outdoor and some indoor venues. Unlicensed spectrum is likely to be used for wireless Centrex/PBX, wireless payphone, and private residential wireless access. Network services for PCS will need to pr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evaluation of channel allocation with distributed control scheme for street microcellular systems

    Publication Year: 1994, Page(s):541 - 547
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Distributed control is indispensable to any personal communication service. However, distributed control makes it difficult to obtain the required frequency bandwidth considering the offered traffic and interference because there is no definite relationship between the base stations and the channels that they use. This paper proposes the virtual frequency reuse pattern, namely a virtual cluster si... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of metal low-partitions on radio propagation in an office

    Publication Year: 1994, Page(s):135 - 139
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    A theoretical model is constructed to predict radio propagation loss at frequency 905 MHz in an office (30 m×10 m×3 m) with multiple low-partitions. Theories of single- and double-knife edges diffraction are combined to formulate the propagation losses due to the low-partitions with height 1.3 m. To verify the accuracy of our model an experiment measuring the field strength inside the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Security for mobile users of telecommunication services

    Publication Year: 1994, Page(s):350 - 353
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    This paper examines some of the most important security issues for mobile telecommunications users, such as internationally-mobile users of the telephone system. It examines the security problems associated with free movement of customers through multiple provider domains, and how these may be overcome using modern security techniques. An example of such an issue is the unique naming of users. Dis... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Distributed communication control architecture for personal communication service

    Publication Year: 1994, Page(s):272 - 275
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    We propose a new network architecture for personal communication services that provides transparent connectivity to different physical networks and user service customization. User information in this network is managed independently by distributed personal agents (PAs) which are identified by their user's personal ID. PAs interact with each other to establish the best communication paths between ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Data transmission via analog cellular systems

    Publication Year: 1994, Page(s):521 - 525
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The paper studies the value of data transmission over idle channels within cellular systems using frequency hopping techniques. In the beginning it seemed very logical that data transmission over cellular channels did not reduce voice capacity by hopping among idle channels. Actually, the analysis in the present paper indicates that although the hopping scheme creates additional capacity, it degra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improved performance of a CDMA cellular system with macrocell diversity

    Publication Year: 1994, Page(s):56 - 61
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    In order to deal with the service demand of a mixture of high and low mobility users a system with overlapped macrocells and microcells has been proposed. In this paper we present architectures for code division multiple access (CDMA) based hybrid macrocell/microcell systems. These architectures are based on the principle of reducing the interference to macrocell users in a highly dense environmen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • DS/SS indoor wireless communications with near-perfect multi-packet capture

    Publication Year: 1994, Page(s):78 - 82
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    The work presented studies a concept for direct sequence spread spectrum (DS/SS) indoor wireless packet communications employing the combination of DS/SS signaling, discrete time of arrival (TOA) randomization, and a general multi-packet capture mechanism. The proposed multi-packet capture system is similar to a SS code division multiple access (SS/CDMA) system in the sense that multi-packet captu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Satellite and cellular integration: a terminal manufacturer's perspective

    Publication Year: 1994, Page(s):392 - 396
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    By the year 2000, personal satellite communications promises the ultimate mobility for users roaming beyond their normal cellular coverage. However the satellite service must support sufficient users to avoid prohibitively-priced satellite services and equipment, all of course without creating satellite spectrum congestion. To achieve this, and to maximise the benefits for users, satellite service... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Rice-lognormal terrestrial and satellite channel model

    Publication Year: 1994, Page(s):155 - 159
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The paper describes a model for non-selective fading channels which is a combination of Rice and lognormal statistics, and is conceived for all types of environment, and both for terrestrial cellular and satellite personal communications. The model needs only three parameters to be completely specified. The model validity has been confirmed by comparisons with measurement data collected in the lit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High speed and global store and forward communication system using LEO satellites

    Publication Year: 1994, Page(s):418 - 422
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    We propose a constellation of LEO satellites for a store and forward packet communication system. In this orbit system, a store and forward packet communication service can be provided at two-hour intervals all over the world by twelve satellites with full-time inter-satellite links. Furthermore, this system is capable of high-speed packet communication of 64 kb/s using user terminals without any ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • PCS implementation-a merger of American and European mobile systems

    Publication Year: 1994, Page(s):612 - 618
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Personal communication services (PCS) are gaining momentum in the United States of America. The FCC ruling to auction the PCS licences in 1994 gives a tremendous boost. Air-interface standards are under definition or already defined by the Joint Technical Committee of ANSI T1 and TIA. The European GSM and DCS1800 cellular radio standards provide most of the elements needed to create PCS networks. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multimedia traffic management principles for guaranteed wireless network performance

    Publication Year: 1994, Page(s):325 - 329
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The third generation of wireless network systems will support numerous multimedia services with stringent quality of service. How to unify the diverse technologies required in the wireless systems and effectively control the radio resource to offer uniform broadband services is a great challenge. A protocol reference model for the future global wireless network is proposed in the paper. The detail... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hand-off analysis for CBWL schemes in cellular communications

    Publication Year: 1994, Page(s):496 - 500
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Channel borrowing without locking (CBWL) allows real-time borrowing of channels from adjacent cells without channel locking in co-channel cells. The schemes provide enhanced traffic performance in homogeneous environments and also relieve hot-spot traffic. Simple channel management and easy implementation are additional features. Two types of hand-off arise in CBWL, intercell hand-offs and intrace... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.