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LOCATION MEMORY AND TECHNIQUE MANAGEMENT IN A MULTI- TECHNOLOGY ENVIRONMENT WITH SERVICE INITIATION

IP.com Disclosure Number: IPCOM000004643D
Original Publication Date: 2001-Mar-14
Included in the Prior Art Database: 2001-Mar-14
Document File: 3 page(s) / 9K

Publishing Venue

Motorola

Related People

Stan Benes: AUTHOR [+3]

Abstract

This paper describes the construction of a new application, the Fusion Manager, which will have the "intelligence" to examine collected data and determine the optimal location technique to use, based on measurement quality, accuracy requirements and computational cost. If required, the Fusion Manager can select lower-tier location elements if higher-tier methods will not produce the optimal result based on potential accuracy versus quality of available data.

This text was extracted from a RTF document.
This is the abbreviated version, containing approximately 45% of the total text.

LOCATION MEMORY AND TECHNIQUE MANAGEMENT IN A MULTI- TECHNOLOGY ENVIRONMENT WITH SERVICE INITIATION

by Stan Benes, Gerry Gutowski, Larry Downing

ABSTRACT

This paper describes the construction of a new application, the Fusion Manager, which will have the "intelligence" to examine collected data and determine the optimal location technique to use, based on measurement quality, accuracy requirements and computational cost.

If required, the Fusion Manager can select lower-tier location elements if higher-tier methods will not produce the optimal result based on potential accuracy versus quality of available data.

INTRODUCTION

There are multiple elemental (i.e., based on a physical property of the signal, such as time or angle) location technologies that can be used to determine the position of a mobile unit. Each of these technologies requires a unique type of information with specific quality requirements to form a location fix. Proper selection of available location techniques early in the location fix process will eliminate computational cycles and wait time associated with a location technique that is not compatible with the available data.

Additionally, location fix error can be minimized by allowing the location system to select a lower-tier technique with higher confidence raw data (relative to the location technique) over a higher-tier technique with poor quality (incomplete, underdetermined or degraded) raw data.

Known prior art location techniques are based on a "one shot" approach, meaning the PDE (Position Determination Entity) will collect one type of data (specific to a given location technology, or a hybrid mixture of technologies) and a fix will or will not be calculated from the data. The current art has not recognized that a hierarchical approach to managing elemental location technologies can deliver accurate and consistently available location when multi-location technologies are available in the system.

DESCRIPTION OF THE METHOD

The Fusion Manager is a software package that acts as an intelligent interface between the PDE data collection functionality, the location determining functionality, and the end user application.

In the primary embodiment, the Fusion Manager software will direct and monitor data collection by multiple PDEs, determine and rank the quality of the collected data, request additional measurements if necessary, select from available data the technology that will provide the most accurate location estimate, and record statistics on the technology utilized.

When a location request is received by the Fusion Manager, it queries a database to decode the type of the request [Figure 1]. The request could be of type E91l, or a non-emergency type (e.g., commercial advertisement location request). After decoding the request type, a memory of timestamped positions, specific for that device, will be interrogated ...