System and method of dynamically calibrating based station timing using location information

A system for calibrating base station timing in a wireless communication system, comprising:

• a base station for transmitting, receiving, and processing communication signals;
• and
• a wireless communication device for communicating with said base station, said wireless communication device configured to determine its location, to detect an arrival time of a first signal transmitted from said base station, and to calculate a line-of-sight delay corresponding to a line-of-sight distance between said wireless communication device and said base station, said line-of-sight distance based on base station location information and said wireless communication device location information,
• wherein said base station measures a round trip delay corresponding to a delay incurred by said first signal and a delay incurred by a second signal transmitted from said wireless communication device back to said base station in response to said first signal, and
• wherein said base station determines a base station timing calibration error based on said line-of-sight delay, said first signal arrival time, and said round trip delay, and calibrates said base station timing to compensate for said base station timing calibration error;
• wherein said line-of-sight delay is determined by the following relationship:
• Δ los = ( x b - x w ) 2 + ( y b - y w ) 2 + ( z b - z w ) 2 c
• where:
• Δlos represents the line-of-sight delay,
• xb, yb, and zb represent coordinate information identifying the base station location information,
• xw, yw, zq represent coordinate information identifying the wireless communication device location information, and
• c represents the speed of light.

A machine-readable medium encoded with a plurality of processor-executable instruction sequences for calibrating timing of a base station in a wireless communication system, said instruction sequences comprising:

• determining location information of a wireless communication device;
• calculating a line-of-sight delay corresponding to a line-of-sight distance between said wireless communication device and said base station, said line-of-sight distance based on base station location information and said wireless communication device location information;
• detecting an arrival time of a first signal transmitted from aid base station to said wireless communication device;
• measuring a round trip delay corresponding to a delay incurred by said first signal and a delay incurred by a second signal transmitted from said wireless communication device back to said base station in response to said first signal;
• determining a base station timing calibration error based on said line-of-sight delay, said first signal arrival time, and said round trip delay;
• and
• calibrating said base station timing to compensate for said base station timing calibration error;
• wherein said line-of-sight delay is determined by the following relationship:
• Δ los = ( x b - x w ) 2 + ( y b - y w ) 2 + ( z b - z w ) 2 c
• where:
• Δlos represents the line-of-sight delay,
• xb, yb and zb represent coordinate information identifying the base station location information,
• xw, xw, zq represent coordinate information identifying th wireless communication device location information, and
• c represents the speed of light.