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Measured RF channel characteristics for wireless devices are compared against the performance lookup tables to determine the sent of lookup tables that most closely match the measured RF channel characteristics. The positions within the environmental model corresponding to the selected set of matching lookup tables are identified as possible locations for the wireless device.
Patent Application serial no. The complete contents of these patents and applications are herein incorporated by reference. The application claims priority to U. Provisional Patent Application Ser. Field of the Invention The present invention generally relates to computerized systems used to predict and manage the network performance characteristics of wireless communication networks, and more particularly, to a method and system for determining and using the position of wireless devices and infrastructure within an environment by combining measured signal data with table lookups of corresponding positions to provide novel features that will be critical to future wireless networks.
Similar needs are emerging for wireless Internet Service Providers WISPs who need to provision and maintain wireless connections to their customers. Emergency services, network security, network troubleshooting and network quality of service are just a few of the applications of positioning technology.
The use of predictive models in designing and maintaining wireless networks is becoming a standard industry practice.
Rapid engineering design, deployment, and management methods for microcell and in-building wireless systems are vital for cost-efficient build-out and on-going operation. The evolving wireless infrastructure is moving toward packet-based transmissions, and outdoor cellular may soon complement in-building Wireless LAN technology.
A Technical Overview, by S. The placement and configuration of wireless and wired equipment, such as routers, hubs, switches, cell sites, cables, antennas, distribution networks, receivers, transceivers, transmitters, repeaters, access points, or RF ID tag readers is critical from both a cost and performance standpoint.
The design engineer, or a network operator, manager, or installer, whether or not technically trained, preferably should be able to predict how much interference can be expected from other wireless systems and where the interference will manifest itself within the environment, as well as locate network users or other entities.
In many cases, the wireless network interferes with itself, forcing the designer to carefully analyze many different equipment configurations in order to achieve proper performance. Sometimes power cabling is only available at limited places in a building or campus, or possible equipment sites are otherwise constrained, and so decisions must be made with respect to the proper location and quantity of equipment, and their proper channel assignments and other configuration.
Prediction methods which are known and which are available in the literature provide well-accepted methods for computing coverage or interference values for many cases. Depending upon the design goals or operating preferences, the performance of a wireless communication system may involve tradeoffs or a combination of one or more factors.
For example, the total area covered with adequate received or radio signal strength RSSIthe area covered with adequate data throughput levels, and the numbers of customers that can be serviced by the system at desired qualities of service or average or instantaneous bandwidth allocations or delays are among the deciding factors used by network professionals in planning the placement of communication equipment comprising the wireless system, even though these parameters change with time and space, as well as with the number and types of users and their traffic demands.
A highly accurate method for properly determining the appropriate placement of equipment and efficient operating characteristics of a multiple-transmitter network such as a Wireless LAN with many access points across a campus is preferred for use in the original installation and start-up of a network.
Given a reliable method for predicting the radio wave propagation environment and RF channel characteristics for any given location within the physical environment, the interaction between mobile or fixed wireless users and the communications network, the performance of any given proposed or existing communications network can be predicted.
This capability enables design engineers and network architects to determine and analyze the performance of a proposed arrangement and configuration of network equipment before an investment is made to deploy the network.
The performance of a wireless communication system may be approximated by determining one or more RF channel characteristics, where RF channel characteristics refers to any measurable parameters that are typically associated with a radio channel within any communications network such as, but not limited to: Radio frequency RF channel characteristics such as these are predictable using well-known techniques to those skilled in the art.
Preferred methods for predicting RF channel characteristics are outlined in U. If there is then established a reliable transform between the RF channel characteristics and end-user transport layer performance characteristics, the end-user transport layer performance can be reliably predicted as described in pending U.
Research efforts by many have attempted to model and predict radio wave propagation. Traffic Statistics by C.
Global Positioning System relies on a wireless device receiving radio signals from one or more orbiting satellites. By correlating the received radio signals from each satellite with pre-existing knowledge of the precise location of each satellite at the instant the signals are received, the GPS device can estimate its position on the Earth in terms of a latitude, longitude, and elevation.In other instances, a wound is created, but no blood flows from the wound.
In either case, the lancing process cannot be combined with the sample acquisition and testing step. data processing, calibration curves, look-up tables, electronic control of penetrating member trajectory during skin cutting, Owen Mumford Ltd.
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Providing integrated telecom software solutions, accommodating a myriad of voice, video, data and wireless services on a single bill, with complimentary applications that provide an end-to-end solution for billing, OSS, provisioning, and web self-care.
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Yoshino, Christopher A. Our aim is to be the global leader in the provisioning of communications network infrastructure solutions and services. We are undertaking several initiatives in our efforts to gain market share. Specifically, we look to sell more of our current portfolio to our existing customers, introduce new products to our existing customers, and.
Owens Corning Case 1. Data Provisioning OCF conceptualizes the principal IS production activities that produce value for the company as transaction processing, data provisioning, and information delivery. Data provisioning manages the inventory of data and information, using relational database management systems and a data dictionary and data.