| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 126-132 |
| Abstraksi Narasi | : | Network operators are aiming to provide a broadband access network to facilitate the next-generation telecom services. They have established the Full Services Access Networks (FSAN) group in order to find the best way to achieve early and cost-effective deployment of broadband optical access system. They concluded that a single worldwide broadband access system should be investigated in FSAN and then standardized in the international standards bodies such as ITU-T. This article outlines FSAN organization and study targets for its Optical Access Network working group, and some key future study issues in terms of optical distribution network requirements and the required system functionalities of the B-PON system. It also describes its standardization strategy and the interaction between FSAN and ITU-T. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 134-141 |
| Abstraksi Narasi | : | Broadband passive optical networks (B-PONs) have entered the commercial deployment phase in North America, Japan, and Europe. Nippon Telegraph and Telephone, BellSouth, France Telecom, British Telecommunications plc, and SBC have developed a set of common technical specifications for a B-PON system based on ITU-T Recommendations G.983.1, G.983.2 and G.983.3. They have deployed or plan to deploy B-PON systems based on this CTS. This article describes B-PON interface features, the outline of CTS, and the deployment status of the B-PON systems around the world. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 86-94 |
| Abstraksi Narasi | : | The Bluetooth wireless technology is designed as a short-range connectivity solution for personal, portable, and handheld electronic devices. Since May 1998 the Bluetooth SIG has steered the development of the technology through the development of an open industry specification, including both protocols and application scenarios, and a qualification program designed to assure end-user value for Bluetooth products. This article highlights the Bluetooth wireless technology. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 118-124 |
| Abstraksi Narasi | : | Recently, several new technological advancements have extended the capibilities of the basic Broadband Passive Optical Network (B-PON) described in ITU-T standard G.983.1. This article describes three of these new technologies: wavelength division multiplexing, dynamic bandwidth assignment, and survivable networking. These additions to the B-PON family of solutions increase its utility by increasing its raw capacity, its efficiency, and its reliability, respectively. A brief description is also given of the next wave of innovation that will further extend B-PON. |
| Nama Pengarang | : | Ala Isam Al-Fugaha, Mohsen Guizani, Frank J. Effenberger, Hiroshi Ichibangase, Haruo Yamashita, Chatschik Bisdikian, Hiromi Ueda et al., Yoichi Maeda, Kenji Okada, Dave Faulkner, Jeyhan Karaoguz, Brent A. Miller et al., Bill Rose, P.M.L Chan et al., Luis Munoz et al., Bongkyo Moon, Hamid Aghvami, Vipul Gupta, Sumit Gupta, Antonio Grilo, Pedro Estrela, Mario Nunes, Dave Marples, Peter Kriens |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 142-146 |
| Abstraksi Narasi | : | In this article, different buffering techniques used to solve the contention problem in ATM switching architectures are compared. Then, the buffer requirements needed to achieve a given Quality of Service (Qos) is determined. Based on the results, we propose a Combined Central and Output Queuing (CCOQ) technique to be used in designing large-scale ATM switches for high-speed networks. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 82-89 |
| Abstraksi Narasi | : | The evolution of IP-based office applications has created a strong demand for public wireless broadband access technology offering capacity far beyond current cellular systems. Wireless LAN access technology provides a perfect broadband complement for the operators` existing GSM and GPRS services in an indoor environment. Most commercial public wireless LAN solutions have only modest authentication and roaming capability compared to traditional cellular networks. This article describes a new wireless LAN system architecture that combines the WLAN radio access technology with mobile operators` SIM-based subscriber management functions and roaming infrastructure. In the defined system the WLAN access is authenticated and charged using GSM SIM. This solution supports roaming between cellular and WLAN access networks and is the first step toward an all-IP network architecture. The prototype has been implemented and publicly verified in a real mobile operator network. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 74-80 |
| Abstraksi Narasi | : | Popular wireless networking protocols such as Bluetooth, IEEE 802.11, and Home RF were originally developed for the 2.4 GHz frequency band by organizations that made design trade-offs based on values such as complexity, price, and performance. Because the protocols were developed independently and these values differed according to the markets and applications the organizations intended to serve, the various protocols do not easily interoperate with one another and can cause significant mutual interference when functioning in the same radio space. The problem becomes especially acute in environments such as residential network where a single network may be required to serve a broad range of application classes. A newer high-performance wireless LAN standard, IEEE 802.11a, operates in the 5 GHz band and offers much higher speeds than previous WLAN standards, but does not adequately provide for unified networks that support multiple classes of devices with differing speed, performance, power, complexity, and cost requirements. These differing classes of devices will become increasingly important as LANs move beyond the limits of office-oriented computer interconnection services and into the realm of data, video, and audio distribution services for interconnected devices in offices and homes. The 5 GHz Unified Protocol (5-UP^TM) is a proposed extension to existing 5 GHz wireless LAN (WLAN) standards that supports data transfer rates to over 54 Mb/s and also allows a wide variety of lower-power lower-speed devices carrying deverse traffic types to coexist and interoperate within the same unified wireless network. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 114-119 |
| Abstraksi Narasi | : | Underwater acoustic networks are generally formed by acoustically connected ocean bottom sensor nodes, autonomous underwater vehicles (AUVs) and surface stations that serve as gateways and provide radio communication links to on-shore stations. The quality of service of such networks is limited by the low bandwidth of acoustic transmission channels, high latency resulting from the show propagation of sound, and elevated noise levels in some environments. The long-term goal in the design of underwater acoustic networks is to provide for a self-configuring network of distributed nodes with network links that automatically adapt to the environment through selection of the optimum system parameters. This article considers several aspects in the design of shallow water acoustic networks that maximize throughput and reliability while minimizing power consumption. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 120-124 |
| Abstraksi Narasi | : | Typical image compression algorithms produce data streams which require a very reliable communication--they are not designed for transmission in an environment in which data may be lost or delayed, as provided by current and next-generation wireless communication networks. Compression and transmission provisions that avoid catastrophic failure caused by lost, delayed, or errant packets are therefore imperative in order to provide reliable visual communication over such systems. This robustness is obtained by modifying the source coding and/or adding channel coding. This article presents an overview of both lossy and lossless source coding techniques and combined source/channel techniques providing robustness, presenting examples of successful techniques. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | IEEE Communications Magazine |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 140-148 |
| Abstraksi Narasi | : | Middleware systems have emerged in recent years to support applications in heterogeneous and ubiquitous computing environments. Specifically, future middleware platforms are expected to provide quality of service support, which is required by a new generation of QoS-sensitive applications such as media streaming and e-commerce. This article presents four key aspects of a QoS-aware middleware system: QoS specification to allow description of application behavior and QoS parameters; QoS translation and compilation to translate specified application behavior into candidate application configurations for different resource conditions; QoS setup to appropriately select and instantiate a particular configuration; and finally, QoS adaptation to adapt to runtime resource fluctuations. We also provide a comparison of existing QoS-aware middleware systems in these four aspects. |
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