Patent ID: 7130642
Filing Date: 2006-10-31
Classification: G01S,H04W

Abstract:
1. A method of performing position determination in a wireless communication network with repeaters, wherein the repeater includes circuitry that causes internal repeater delays, and additional delays are defined responsive to the internal repeater delays and the transmission time from the base station to the repeater, and wherein information for additional delays associated with the repeater is available, comprising: identifying a signal received by a wireless terminal as being from a repeater; obtaining a position of the repeater; processing a time measurement for the repeater to remove the additional delays associated with the repeater; deriving a more accurate position estimate for the terminal based on the time measurement for the repeater, with the additional delays removed, and time measurements for at least two additional transmitters received by the terminal; and providing the position of the repeater as a position estimate for the terminal if a more accurate position estimate for the terminal cannot be obtained.