초록 ▼

A calibration system utilizing existing location techniques for a global radio telecommunication system 10 autonomously calibrates the communication system\s location system by routing precision location data through system 10. Calibration reduces system errors by allowing time slots to remain narro

A calibration system utilizing existing location techniques for a global radio telecommunication system 10 autonomously calibrates the communication system\s location system by routing precision location data through system 10. Calibration reduces system errors by allowing time slots to remain narrow. The precision data is carried by existing commands throughout the system to measure location errors inserted by satellites 12. A gateway 16 compiles and evaluates received calibration data and determines when to update all gateways 16 with new satellite variance data tables 435. The calibration system provides early warning of degradation of system components and long-term analysis of system performance.

대표청구항 ▼

In a radio telecommunication system employing accurate location data of a user for communication routing and access control, a method of calibrating said radio telecommunication system to generate said accurate location data from measured signal parameters as measured by said user and modified by va

In a radio telecommunication system employing accurate location data of a user for communication routing and access control, a method of calibrating said radio telecommunication system to generate said accurate location data from measured signal parameters as measured by said user and modified by variance data stored in a gateway, said method comprising the steps of: (a) generating measured signal parameters between a satellite and a calibration subscriber unit; (b) receiving precision location data from an alternate location source at said calibration subscriber unit; (c) forwarding said measured signal parameters and said precision location data to said gateway from said satellite; and (d) generating said variance data to be used to correct subsequent location processing at said gateway.