International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / In our prior work [1] we proposed that network-centric data telemetry systems offer substantial improvements over traditional serial data telemetry systems. This paper is a follow up to that work and is also a companion to our experimentation paper [2]. In network-centric telemetry systems, there can be many infrastructure sites that form the network’s ad hoc communications paths, and there can be many fast-moving nodes, e.g., munitions, which enter the network, generate telemetry data, and exit the network. As the geographic size of such data telemetry networks grows, constraints on link margin will typically preclude a one-to-one matching of ground-based infrastructure sites to airborne, fast-moving nodes. That is, the fast-moving nodes will traverse distances that will require the mobile node to change which specific ground node it communicates with to transfer telemetry data. This paper describes an analytic model for the generic process of a fast moving node entering a wireless network and the associated handoffs of that node among ground stations as the fast mover traverses the spatial region covered by the wireless network. Our analysis and associated worst-case example demonstrate that wireless networking technology can handle the stress of rapidly managing connectivity to high-speed nodes for effective telemetry data extraction.

International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper presents an exciting new concept in real-time information distribution that can be easily integrated into existing and future telemetry reception and data dispersal systems. After briefly examining the evolutionary path and various perceptions of the concept “real-time”, a variety of techniques are explored in achieving the expedient movement of real-time information. Many non-telemetry application environments are now using real-time shared-memory networking techniques to obtain large, highspeed integrated sharing of common information. The phenomenal results are partially attributable to high reliability, extremely low latency, and ease of use. This paper attempts to present various telemetry applications and scenarios with descriptions of benefits achieved by simply changing existing data movement techniques to those using shared-memory networking techniques.

International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / A Wireless Local Area Network (WLAN) based system called 2-Way Robust Acquisition of Data (2-RAD) is being developed to telemeter data from a number of fast moving airborne platforms to ground collection points distributed over a large test range. The Johns Hopkins University Applied Physics Laboratory (JHU/APL) is analyzing a 2-RAD prototype currently in operation at the U.S. Army Yuma Proving Ground (YPG) that uses an IEEE 802.11b WLAN infrastructure. Preliminary analysis efforts at JHU/APL indicate that the Doppler shift from fast movers, and the system radio link margin, do not preclude IEEE 802.11b from being used for 2 -RAD.

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Distributed processing is coming to data acquisition. The desire for smart sensors that can preprocess data, is growing. Making sensors themselves intelligent will reverse the historic trend toward smaller and cheaper sensors. Incorporating current sensor technology into data acquisition nodes in a network will create a distributed data acquisition, DAQ, environment that can acquire data from around the world over the Internet. The future is now.

Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 255-261).

As hardware becomes cheaper and cheaper, there is an increasing interest in the implementation of distributed control networks with microcontrollers. Such networks are usually inexpensive and of high performance. In this thesis work, a low-cost display control unit for COLAN, a control-oriented network, is designed. The system is based on the 8051 single-chip microprocessor and 82716 video controller. COLAN network users can remotely display and control the screen by sending commands to the display control node through the network. The emphasis of this thesis is in the implementation of the display control node, including hardware and software. It has been demonstrated that a basic set of display control functions has been developed, different type monitors can be supported, and on-screen instructions make the system easy to use. / Graduation date: 1991

A growing number of IEEE 802.11-based wireless LANs have been set up in many public places in the recent years. These wireless LANs provide convenient network connectivity to users. Although mobile nodes allowed roaming across wireless LANs, handoff latency becomes an obstacle when mobile nodes migrate between different IP networks. Advanced, the link-layer handoff process disrupts the association when a mobile node moves from one access point to another. Even without discussing the latency of Mobility Protocols, this link-layer handoff latency already made many real time applications can not meet their requirements. In this dissertation, it is proposed three schemes to solve the problems occurred in the different network layers. These schemes not only reduce the latency of whole handoff procedure but also have no violation to the existing specifications in the IEEE 802.11 standard and compatible with existing devices. L2-Optimize and AIL used to minimize the duration of link-layer handoff. With LASP, Mobility handoff can be reduced to an acceptable situation. Therefore, even real time applications can meet their requirements when users are roaming across wireless LANs.

In order to grapple with the continuously increasing demand on the multimedia traffic over high speed wireless LAN, we need a QoS-oriented MAC for wireless multimedia system. The IEEE 802.11's PCF is an optional capability, which is connection-oriented, and provides contention-free service, but some papers have proved that it is not efficient when use PCF to transmit voice. And there are no any efficient bandwidth allocation scheme for more high bandwidth requirement source like video in PCF. In this thesis, we will propose a efficient centralized scheduled access MAC approach in IEEE 802.11 to satisfy heterogeneous traffic mix. There are two main algorithms to achieve the goal, queue management algorithm for downlink and uplink to satisfy video traffic's high bandwidth requirement, polling list management method enhance the efficiency of the polling scheme for transmitting voice traffic. We evaluate the system performance by the network simulator OPNET, we use the MPEG-1 and ITU G.711 PCM standard as the video and voice traffic . The result shows that the centralized scheduled access MAC approach we propose has excellent efficient and compelling performance.

Thesis (M.S.)--Florida State University, 2003. / Advisor: Dr. Xin Yuan, Florida State University, College of Arts and Sciences, Dept. of Computer Science. Title and description from dissertation home page (viewed Oct. 3, 2003). Includes bibliographical references.

Recently, simulation has became the most effective way for analyzing and perfecting the performance of telecommunication networks. It has proven itself as the best method in the realm of education, where the hardware capabilities for practical training are often limited. A simulated network enables students to practice hands-on network programming and to understand, in a practical way, how a data communication network operates and how protocols work.Metanet is an environment that enables the programmer to write networking applications and to test them as if using an IP network with the hosts connected through Ethernet. The whole software is a multi-process application that makes use of just the resources offered by a single machine. It runs on a UNIX system and emulates hosts that also communicate through an emulated network using TCP/IP. Each layer of the hosts' operating system is designed as a separate process that will communicate with the adjacent layers using socket pairs or UDP connections. The application layer has multi-processing capability. / Department of Computer Science