SYSTEMS AND METHODS OF ASSISTED GPS

摘要

Embodiments of an improved assisted global positioning system (GPS) method and system are described. Wireless access points send assistance data to GPS receivers that are integrated into cellular chipsets and other chipsets. The access points may also act as fixed location references for differential GPS (DGPS) mobile stations. Errors caused by multipath travel of the GPS signals are reduced by using fixed location reference receivers.

主权项

1. A method of position determination using global positioning system (GPS) signals, said method comprising the steps of:
receiving GPS information from a plurality of GPS satellites; receiving a plurality of assistance data from at least one access point; computing a combined assistance data from said plurality of assistance data; and computing a position based on said GPS information and said combined assistance data.