| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 68-72 |
| Abstraksi Narasi | : | When accessing IP-ready appliances at home from a remote site, security is a major concern. In this report we address the seemingly common scenario of accessing IP-ready appliances behind a home firewall from a remote PC within a corporate intranet. The scenario reveals the complex nature of secure remote access. Various IP tunneling technologies can provide secure remote access without sacrificing the ubiquitous accessibility of the Internet; however, the problem of multiple authentication processes is evident in the framework. Digital certificate technology can simplify the authentication process required to establish multiple IP tunnels. However, IP tunneling technologies do not scale well, and become infeasible if the number of firewalls to traverse increases. Scalability and end-to-end security requirements call for the deployment of authenticated firewall traversal methods that use minimal or no IP tunnels. This article describes a meet-in-the-middle network model as a simple and practical method. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 88-93 |
| Abstraksi Narasi | : | Refactoring can be an important ingredient in the strategy for development and evolution of complex telecommunications software systems. Refactoring is one way to reuse and extend a successful software system. This article will present some design tactics that will assist a development team when they choose evolution from an existing software system over building a completely new system from the ground up. Strictly speaking, the refactoring process changes only the internal design of the software. Refactoring does not add any new functionality. However, the goal of refactoring work is to pave the way for the software to be modified and extended more easily. The simplest example of redesign is the creation of simple "wrapper classes" that contain groups of functions extracted from the legacy code. More complex design patterns are also useful when attempting to improve the design. Developers usually divide the redesign work into stages so that each stage can be implemented and tested separately. This article describes a real-world example of this approach that shows how refactoring improved the design of a wireless base station controller product. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 116-124 |
| Abstraksi Narasi | : | The race for higher data rates in wireless systems has produced a multiplicity of radio access methods to fulfill the quality of service needs for the next generation of mobile devices. This document presents an analysis of GERAN, UTRAN, WLAN, and Bluetooth as possible methods of accessing services via a wireless device. In light of the results, meaningful combinations for radio access methods of wireless devices are elaborated. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 74-79 |
| Abstraksi Narasi | : | There is a strong trend toward embedding Internet capabilities into electronics and everyday appliances. In this article we introduce the results from a research project where we have been working toward implementing a functionally minimized Web server on silicon. Although most embedded Internet appliances will use a microcontroller and software to enable TCP/IP and HTTP support, we argue that there are many applications where a hardware-based approach is more suitable. Our WebChip approach is a family of IPv6-compatible solutions toward the realization of embedded and minimized Web systems. The core parts of the implementation are a C-code library and VHDL code implementation. The solution is tested with an FPGA and can be later embedded into various ASIC chips. We argue that this approach is also commercially viable since the VHDL code can be delivared as an intellectual property block. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 80-84 |
| Abstraksi Narasi | : | The networked appliance architecture with peer-to-peer communication facility, which is called AMIDEN, is proposed in this article. The design philosophy and architecture of AMIDEN are discussed in detail. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 60-66 |
| Abstraksi Narasi | : | The Internet`s emergence as a worldwide digital infrastructure has dramatically encouraged a market for communication-oriented appliances, such as mobile phones, personal assistants, network-enabled games, interactive television, Internet telephony, and Internet facsimile. The marketplace is developing rapidly, along with specialized Internet-based "linking" services to connect these devices. Generally two different technical approaches are being explored for these services. One uses classic Internet technology, such as e-mail or the World Wide Web; the other incorporates unique standards, often derived from earlier non-Internet specifications. This article explores efforts to create Internet facsimile appliances, contrasting them with devices for Internet telephony. Efforts at Internet facsimile have produced two different sets of standards. Store-and-forward Internet facsimile is specialized as a profile of classic Internet mail. Real-time Internet facsimile uses a specialized protocol. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 102-113 |
| Abstraksi Narasi | : | Distributed object computing middleware, such as CORBA, COM+, and Java RMI, shields developers from many tedious and error-prone aspects of programming distributed applications. It is hard to evolve distributed applications after they are deployed, however, without adeguate middleware support for meta-programming mechanisms, such as smart proxies, interceptors, and pluggable protocols. These mechanisms can help improve the adaptability of distributed applications by allowing their existing software designs and implementations significantly. This article examines and compares common meta-programming mechanisms supported by DOC middleware. These mechanisms allow applications to adapt more readily to changes in requirements and runtime environments throughout their lifecycles. Some of the meta-programming mechanisms are relatively new, whereas others have existed for decades. Until recently, however, DOC middleware has not provided all these mechanisms in a single integrated framework, so researchers and developers may not be familiar wuth the breadth of meta-programming mechanisms available today. This article provides a systematic evaluation of these mechanisms to help researchers and developers determine which are best suited to their application needs. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 46-51 |
| Abstraksi Narasi | : | The world is evolving from one in which almost all access to the Internet comes through personal computers, to one in which so-called Internet appliances are expected to make up a growing share of end user equipment. Focusing on consumer-oriented appliances, we consider whether this shift has implications for the pace of Internet innovation. We conclude that given the starting point of the current Internet, certain of the proposed business models for Internet appliances are not likely to be viable, and this very fact protects the Internet`s characteristically rapid pace of innovation. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 136-144 |
| Abstraksi Narasi | : | In this article we elaborate on the management goals of next-generation cellular networks and describe how data-centric solutions can meet these goals. In a data-centric solution, operator applications act on a database representation of the cellular network. Network operations are invoked as a consequence to database changes, and the network, in turn, feeds the database with data such as network event notifications. The data-centric approach allows a focus on data as it is specified by the business needs of network management. This approach is augmented with data independence to assure consistent and flexible access of the data environment through the use of a common data interface. The data-centric design is contrasted with an application-centric design, and we conclude by providing suggestions on how application interface components can augment a data-centric network management solution. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 94-100 |
| Abstraksi Narasi | : | Significant amounts of legacy software create a "barrier" to adoption of advanced software engineering techniques in the telecommunications industry. To overcome this barrier, algorithms, methods, and powerful tools for automated extraction of formal models of the legacy telecommunication software are required. In this article we present a "scenario-based" approach to design recovery and evaluation of legacy telecommunication software into formal models. Our approach is iterative and is based on extracting scenarios from the legacy software using a commbination of dynamic and static strategies, and automatically synthesizing formal models from these scenarios. For the first step we use the KLOCwork Suite, which is capable of providing summarized structural, functional, and scenario models of existing software. For the second step we use the MOST Suite, which is capable of synthesizing state-based formal models from scenarios, formalized as extended message sequence charts. This article provides detailed descriptions of our design recovery methodology and compares it with related approaches. A case study is discussed where our scenario-based methodology was applied to recover design of a small-sized telecommunications-like software system called the ToolExchange. |
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