| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 52-59 |
| Abstraksi Narasi | : | This article describes problems associated with remotely accessing networked appliances (e.g., from the Internet). Networked appliances are widely viewed as the "next wave" of devices on the Internet. We discuss some possible uses for networked appliances and the requirements for communicating with them. We present details of a solution to meet these communication requirements based on the IETF Session Initiation protocol. In addition, we discuss the rationale for our approach and reasons other approaches were not adopted. An example of the use of SIP in this domain is presented to illustrate how the solution can be used. We conclude with outstanding challenges and reiterate advantages of this approach. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 145-151 |
| Abstraksi Narasi | : | This article offers a behind the scenes glimpse of a successful ADSL transceiver development, completed over the last decade while the ADSL standard evolved. It discusses the pitfalls experienced by designers and describes how a pragmatic and unconventional design solution was found. |
| Nama Pengarang | : | Hsiao-Hwa Chen, Jun-Feng Yeh, Naoki Suehiro, Peter Reusens et al., Simon Tsang, Stan Moyer, Dave Marples, Nikolai N. Mansurov, Robert L. Probert, Ariel Pashtan, Mitchell Abel, Sharon Eisner Gillett et al., Nanbor Wang et al., Kiyoshi Toyoda, Shiro Tamoto, David H. Crocker, Michihiko Minoh, Tak Kamae, Janne Riihijarvi, Petri Mahonen, Mika J. Saaranen, Juha Kalliokulju et al., Dennis Mancl, Atsushi Kara |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 126-135 |
| Abstraksi Narasi | : | This article is a review of our ongoing research effort to construct a new multicarrier CDMA architecture based on orthogonal complete complementary codes, characterized by its innovative spreading modulation scheme, uplink and downlink signaling design, and digital receiver implementation for multipath signal detection. There are several advantages of the proposed CDMA architecture compared to conventional CDMA systems pertinent to current 2G and 3G standards. First of all, it can achieve a spreading efficiency (SE) very close to one (the SE is defined as the amount of information bit (s) conveyed by each chip); whereas SEs of conventional CDMA systems equal 1/N, where N denotes the length of spreading codes. Second, it offers MAI-free operation in both up-and downlink transmissions in an MAI-AWGN channel, which can significantly reduce the co-channel interference responsible for capacity decline of a CDMA system. Third, the proposed CDMA architecture is able to offer a high bandwidth efficiency due to the use of its unique spreading modulation scheme and orthogonal carries. Lastly, the proposed CDMA architecture is particularly suited to multirate signal transmission due to the use of its unique spreading modulation scheme, which simplifies the rate-matching algorithm relevant to multimedia services and facilitates asymmetric traffic in up- and down-link transmissions for IP-based applications. Based on the above characteristics and the obtained results, it is concluded in this article that the proposed CDMA architecture has a great potential for applications in future wideband mobile communications beyond 3G, which is expected to offer a very high data rate in hostile mobile channels. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 80-86 |
| Abstraksi Narasi | : | This article is a description of the Web-Based Enterprise Management initiative. It discusses both the substance of initiative itself, in the form of the overall architecture approach implied by WBEM, and the industry context that gave rise to WBEM. The industry context is the current state of management systems and software, standardization efforts, and the actual systems being managed. These provided the major influences in shaping the evolution of the WBEM initiative. The substance of the initiative is provided by the WBEM process and information architectures that support a scalable and hetergeneous management structure. The various aspects of the process architecture are covered in the article, including the object manager, object providers, schema management, and protocols required for communication among the various components of the architecture. An overview of the information architecture is provided in the form of a summary of the Desktop Management Taskforce`s Common Information Model schema implemented by WBEM. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 54-64 |
| Abstraksi Narasi | : | In response to telecom and computer industry forces, TMN standardization activities within the International Telecommunication Union have been consolidated and have been extended through complementary efforts in other fora and consortia. Efforts to widen the TMN technology choices, particularly in support of distributed management, have also been initiated with the support of these groups. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 102-107 |
| Abstraksi Narasi | : | In recent years the management of the radio spectrum, in terms of deciding which applications and which users should have access to it, has become increasingly difficult. This is due to the dramatic growth is users and applications requiring radio spectrum and the need from the government for increasing openness and fairness in making decisions. A number of spectrum managers have investigated the use of economic tools to overcome these problems, including an analysis of the economic value of the spectrum. This article examines the roles of these techniques and suggests that three is a strong argument for their widespread adoption within most spectrum managers. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 88-93 |
| Abstraksi Narasi | : | In this article we present a mixed-integer programming model for the problem of designing a survivable capacited network, and describe a cutting plane algorithm for its solution. The model and the solution methods are integrated in our network dimensioning tool, DISCNET. Given a communication demand between each pair of switching nodes in a region, the task is to determine the topology of a telecommunication network connecting the given nodes and to select, from a given set of valid values, a capacity for each potential physical link such that the communication demands are satisfied, even if a network component fails. A solution consists of the chosen links and their capacity, as well as the routings for each demand, in the case of failure-free operation and the case of single component (node or link) failure. We suggest two alternative models to deal with failure of single network components. The first employs diversified paths to guarantee the routing of a specified fraction of each demand without rerouting effort; the second allows rerouting in failure situations. At the end we discuss alternative ways to implement survivability using these two models. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 37-43 |
| Abstraksi Narasi | : | The Simple Network Management Protocol is the most widely used protocol for the management of IP-based networks and internets. The original version, now known as SNMPv1, is widely deployed. SNMPv2 adds functionality to the original version but does address its security limitations; this relatively recent standard has not achieved much acceptance. An effort is currently underway to develop SNMPv3, which will retain the functional enhancements of SNMPv2 and add powerful privacy and authentication features. This article provides a survey of the three versions of SNMP, including a discussion of the way in which management information is represented and the protocol functionality. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 46-53 |
| Abstraksi Narasi | : | Data communications standards to allow exchange of information between two application processes in different heterogeneous computing environments have been developed by International Standards groups. With the development of these standards, the need for managing the communications protocols was realized as part of both the Internet and OSI standards suites. This article addresses the network management paradigm developed as part of OSI standards. The OSI network management application includes three different aspects: categories of network management, a protocol that specifies the structure for transferring network management information, and information models that define resource-specific management information for the specific management functions. These three aspects will be described in this article. Network management functions are grouped into categories: configuration, fault, performance, security, and accounting. The resource is managed to accomplish these functions. These five categories have been used not only in OSI Network Management but also in specifying the management functions for Telecommunications network. These five categories are briefly discussed in the paper. The protocol structure for OSI network management is defined as an application service element known as CMISE. Regardless of the resource being managed, the protocol defines a basic set of operations applicable to nework management. The article discusses the semantics of the various operations and the parameters associated with each operation. Using the structure defined by the protocol, for the various management functions, information is modeled to represent the managed resource. Object-oriented principles are used in defining information models. An introduction to these principles is provided. The management information exchanged is a combination of the three aspects. As part of OSI network management, information models to represent communication entites have been developed. An example is shown to illustrate the exchange message for a management function. The article reiterates the three aspects and points out the advantages offered by this network management paradigm. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 66-70 |
| Abstraksi Narasi | : | Current network management depends on centralized monitoring, analysis, and control by operations staff who must manipulate detailed and often obscure element instrumentation. This complex and labor-intensive management paradigm has been stretched to its limits by the scale and complexity of emerging networks. This article describes the use of delegated agents to distribute and automate management functions. With delegated agents management intelligence can be dynamically embedded in elements and domains so that networked systems can be programmed to be self-managed. |
Unduh Dokumen Berkas PDF Utama