摘要:
A method and system for location determination at a mobile communication device 102 is provided. The mobile communication device 102 includes a satellite positioning receiver 410. The mobile communication device 102 acquires a first location aiding parameter and a second location aiding parameter from a first Terrestrial Communication Network (TCN) 108 and a second TCN 110, respectively. Selection of the first TCN 108 and the second TCN 110 is based on the first and second location aiding parameters, respectively. The satellite positioning receiver 410 uses the first and second location aiding parameters to determine the location at the mobile communication device 102.
摘要:
A mobile communication device (202) and peer mobile communication devices (204, 206) are capable of direct voice and data communication. The mobile communication device has a reference oscillator (104) which is used for generating operating frequencies, and is subject to frequency errors resulting from manufacturing tolerances, heat, and other error sources. The mobile communication device receives a frequency correction message (506) from a peer mobile communication device that has calibrated its reference oscillator. The frequency correction message contain offset information which is used by the mobile communication device to determine its offset (316) from a nominal frequency (302).
摘要:
A mobile communication device (202) outside the service area of a communications network 210 in need of satellite positioning assistance information to perform a location determination (308). The mobile communication device receives the assistance information from a peer mobile communication device (204, 206) over a direct link.