초록 ▼

A method and apparatus for processing position information from satellite positioning system satellites and from cellular based communication signals. In one example of a method according to the invention, a SPS receiver receives SPS signals from at least one SPS satellite. This SPS receiver is coup

A method and apparatus for processing position information from satellite positioning system satellites and from cellular based communication signals. In one example of a method according to the invention, a SPS receiver receives SPS signals from at least one SPS satellite. This SPS receiver is coupled to and typically integrated with a communication system which receives and transmits messages in a cell based communication system. In this method, a message is transmitted in the cell based communication signals between a communication system and a first cell based transceiver. A time measurement which represents a time of travel of a message in the cell based communication signals between the cell based transceiver and the communication system is determined. Another time measurement which represents a time of travel of the SPS signals is also determined. A position of the SPS receiver is determined from a combination of at least the time measurement which represents the time of travel of a message in the cell based communication signals and from a time measurement which represents a time of travel of the SPS signals. The cell based communication signals are capable of communicating data messages in a two-way direction in one embodiment between the cell based transceiver and the communication system.

대표청구항 ▼

[ What is claimed is:] [12.] A method for processing position information in a digital processing system, said method comprising:determining a first time measurement which represents a time of travel of a message in cell based communication signals in a cellbased communication system which comprises

[ What is claimed is:] [12.] A method for processing position information in a digital processing system, said method comprising:determining a first time measurement which represents a time of travel of a message in cell based communication signals in a cellbased communication system which comprises a first cell based transceiver which communicates with said digital processing system and a communication system which communicates in a wireless manner with said first cell based transceiver;determining a position of a SPS receiver from at least said first time measurement and a second time measurement which represents a time of travel of SPS signals received at said SPS receiver which is integrated with said communication system and is remotely located relative to said first cell based transceiver and said digital processing system, wherein said cell based communication signals are capable of communicating messages from said communication system to said first cell based transceiver.