Area based position determination for terminals in a wireless network

   
   

Techniques to estimate the position of a wireless terminal. In a method, the identities of a number of transmitters (e.g., BTSs) to be used to estimate the position are initially received. Expected areas for these transmitters are then determined. The expected area associated with each transmitter is indicative of an area where the terminal is likely to be located given that the signal from the transmitter is received by the terminal. Each expected area may comprise a location (e.g., the expected area center) to be used as an estimated position of the terminal and an uncertainty (or error estimate) associated with that estimated position. The expected areas for the transmitters are then combined (e.g., based on a weighted average) to determine a combined expected area, which is then provided as the estimate of the position of the terminal.

Técnicas para estimar la posición de un terminal sin hilos. En un método, las identidades de un número de transmisores (e.g., BTSs) que se utilizarán estimar la posición se reciben inicialmente. Las áreas previstas para estos transmisores entonces se determinan. El área prevista asociada a cada transmisor es indicativa de un área donde está probable el terminal ser localizado dado que la señal del transmisor es recibida por el terminal. Cada área prevista puede abarcar una localización (e.g., el centro previsto del área) que se utilizará como posición estimada del terminal y una incertidumbre (o estimación del error) asociados a ése la posición estimada. Las áreas previstas para los transmisores entonces se combinan (e.g., basado en un promedio cargado) para determinar un área prevista combinada, que entonces se proporciona como la estimación de la posición del terminal.

 
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