Timing advance determinations in wireless communications devices and methods
First Claim
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1. A method in a wireless communications device, the method comprising:
- determining a distance of the wireless communications device from a base station;
determining timing advance, at the wireless communications device, for the base station based on the distance of the wireless communications device from the base station;
using the timing advance determined for transmitting to the base station.
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Abstract
A method in a wireless communications device including obtaining timing advance, for example, by determining (430) timing advance based on a distance of the wireless device from a base transceiver station. In some embodiments, the timing advance and corresponding location information is stored in a look-up table on the wireless device. The look-up table data may be populated or updated from timing advance information generated on the wireless device and/or obtained from some other source. In some embodiments, the wireless device transmits a modified access or normal burst when using a timing advance determined on the wireless communications device.
195 Citations
23 Claims
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1. A method in a wireless communications device, the method comprising:
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determining a distance of the wireless communications device from a base station;
determining timing advance, at the wireless communications device, for the base station based on the distance of the wireless communications device from the base station;
using the timing advance determined for transmitting to the base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method in a wireless communications device, the method comprising:
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determining a propagation delay between the wireless communications device and a base station;
determining timing advance, in the wireless communications device, for the base station based on the propagation delay between the wireless communications device and the base station;
using the timing advance determined for transmitting to the base station. - View Dependent Claims (11)
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12. A method in a wireless communications device, the method comprising:
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obtaining first timing information for the wireless communications device at a first known location relative to a base station;
obtaining second timing information for the wireless communications device at a second known location relative to the base station;
determining a location of the base station based on the first and second timing information and based on the first and second known locations.
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13. A method in wireless communications device, the method comprising:
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determining a difference between a current cell timing and a prior cell timing for a common serving cell;
determining a current timing advance for the common serving cell using the difference between the current cell timing and the prior cell timing and using a prior timing advance corresponding to the prior cell timing. - View Dependent Claims (14)
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15. A method in a wireless communications device having a look-up table providing timing advance information associated with different locations relative to at least one base station, the method comprising:
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determining a location of the wireless communications device;
determining timing advance information for the location of the wireless communication device from the look-up table. - View Dependent Claims (16, 17, 18, 19)
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20. A method in a wireless communications device, the method comprising:
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determining timing advance on the wireless communications device;
transmitting a modified burst to a network using the timing advance determined on the wireless communications device. - View Dependent Claims (21, 22, 23)
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Specification