Standards For Metropolitan Area Networks Research Articles

The Latest Progress on IEEE 802.11mc and IEEE 802.11ai [Standards

IEEE 802.11 is a working group operating under the sponsorship of the IEEE Local Area Network (LAN)/Metropolitan Area Network Standards Committee (LMSC). It is responsible for writing standards focusing on wireless LANs (WLANs). A WLAN's typical transmission range is up to 100 m. Unlicensed spectrum is generally considered, including 2.4 GHz, 5 GHz, and 60 GHz, with a few exceptions, such as the lightly licensed spectrum being considered in IEEE 802.11y and the TV whitespace being considered in IEEE 802.11af.

Standardization on Body Area Network and a Prototype System Based on UWB

Body area network (BAN) is a promising wireless technology that realizes wireless connectivity among vital signal sensors deployed on human body. Monitoring various vital signals collected through BAN provides an efficient way to lower disease occurrence rate and reduce medical expenditure. Task Group 6 (TG6) within the IEEE 802 Local and Metropolitan Area Network Standards Committee is developing a BAN standard, i.e., IEEE 802.15.6. In which, specifications of three physical layers (PHYs) and a single common medium access control (MAC) are being drafted. The standardization process has been continuing for several years in the Task Group 6 (TG6) under Working Group 15 (WG). In this paper, we describe the up-to-date status of IEEE 802.15.6 standardization. Some main specifications under drafting are presented. Moreover, as an effort of implementing a BAN model, a prototype BAN system based on the high band of ultra-wideband (UWB) is demonstrated.

Analysis of dual-link networks for real-time applications

Next-generation networks are expected to support a wide variety of services. Some services such as video, voice, and plant control traffic have explicit timing requirements on a per-message basis rather than on the average. In this paper, we develop a general model of dual-link networks to support real-time communication. We examine the desirable properties of this network and the difficulties in achieving these properties. We then introduce the concept of coherence and develop a theory of coherent dual-link networks. We show that a coherent dual-link network can be analyzed as though it is a centralized system. We then discuss practical considerations in implementing a dual-link network, and implications of this work to address problems observed in the IEEE 802.6 metropolitan area network standard.

Priority promotion DQDB networks to improve fairness

The Distributed Queue Dual Bus (DQDB) network is considered as a Metropolitan Area Network standard. However, it exhibits unfairness problems in bandwidth allocation when the network is overloaded. The bandwidth balancing (BWB) scheme has been recommended by CCITT to improve the fairness of bandwidth allocation, but the price paid is the bandwidth waste. In this paper, we present a different solution, the priority promotion (PP) scheme, to improve the fairness problem of the DQDB network. This solution requires only a minor modification of the current protocol, and wastes negligible bandwidth to solve the unfairness problem. The results indicate that the delay time of each message in the proposed priority promotion scheme is much shorter than that of the BWB scheme: thus the PP scheme has the performance of lower delay time and higher throughput than that of the BWB scheme. When the control parameter in the priority promotion scheme is appropriately chosen, each station in the DQDB network can be allocated a preserved bandwidth, so that the unfairness problem of bandwidth allocation is eliminated.

Standards for metropolitan area networks

The differences between local area networks (LANs) and metropolitan area networks (MANs) are outlined, and their impact on MAN standards is explored. The discussion covers IEEE P802's view of metropolitan area networks, MAN architecture, early proposals considered by the IEEE 802.6 committee, fiber optic proposals, and the emerging consensus. The need for field experience and the anticipated timetable for the IEEE P802.6 standard are also examined. >

IEEE Project 802: Local and Metropolitan Area Network Standards (An April 1983 Status Report)

This paper provides a status update on the IEEE 802 Project. It should be considered in conjunction with the author’s previous DCCS papers on this subject (Ref.1,2) since it concentrates on changes since the last report. Changes in organization of the committee and the documents’ method of processing as IEEE standards, and technical requirements are discussed. In addition, an expanded scope of committee work is described. The status of the work in the IEEE and international standards organizations is described.