Back to results
US 8,265,102 B2Granted
System and method for reacquisition of a gated pilot
AssigneeQUALCOMM Incorporated
InventorAbhay Arvind Joshi
Life of this patent
Estimating the term…
Abstract
Systems and techniques are disclosed wherein a gated pilot signal can be re-acquired faster by searching a last known pilot offset and/or searching a last coset in which the last pilot signal was found.
Claims20
A method of re-acquiring a gated pilot signal, comprising:
- determining, at a subscriber station, whether a gated pilot signal is lost due to fading, wherein the gated pilot signal is part of a particular coset of a plurality of cosets, the particular coset including pilot offsets that share a set of symbols;
- when the gated pilot signal is not lost due to fading, searching the pilot offsets of the particular coset for the gated pilot signal;
- and
- when the gated pilot signal is found:
- synchronizing the subscriber station with a base station;
- and
- transitioning the subscriber station to steady state operation.
4 more elements
A method of re-acquiring a gated pilot signal, comprising:
- transitioning a subscriber station to a pilot acquisition state in response to losing a gated pilot signal, wherein the gated pilot signal is part of a particular coset of a plurality of coset, the particular coset including pilot offsets that share a set of symbols;
- determining, at the subscriber station, whether the gated pilot signal is lost due to fading;
- when the gated pilot signal is not lost due to fading, searching the pilot offsets of the particular coset for the gated pilot signal;
- and
- when the gated pilot signal is found:
- synchronizing the subscriber station with a base station;
- and
- transitioning the subscriber station to steady state operation.
5 more elements
A receiver comprising:
- means for acquiring a gated pilot signal, wherein the gated pilot signal is part of a particular coset of a plurality of cosets, the particular coset including pilot offsets that share a set of symbols;
- means for determining that the gated pilot signal is lost due to a reason other than fading;
- and
- means for searching, responsive to the means for determining, the pilot offsets of the particular coset for the gated pilot signal.
1 more element
A receiver comprising:
- means for acquiring a gated pilot signal, wherein the gated pilot signal is part of a particular coset of a plurality of cosets, the particular coset including pilot offsets that share a set of symbols;
- means for determining whether a gated pilot signal is lost due to fading;
- and
- means for searching for the gated pilot signal,
- wherein the means for searching searches the pilot offsets of the particular coset for the gated pilot signal when the gated pilot signal is not lost due to fading, and
- wherein the means for searching iteratively searches remaining cosets of the plurality of cosets when the gated pilot signal is not found in the particular coset of the plurality of cosets.
3 more elements
An apparatus for re-acquiring a gated pilot signal, comprising:
- means for transitioning a subscriber station to a pilot acquisition state in response to losing a gated pilot signal, wherein the gated pilot signal is part of a particular coset of a plurality of cosets, the particular coset including pilot offsets that share a set of symbols;
- means for determining whether the gated pilot signal is lost due to fading;
- means for searching the pilot offsets of the particular coset for the gated pilot signal when the gated pilot signal is not lost due to fading;
- means for synchronizing the subscriber station with a base station when the gated pilot signal is found;
- and
- means for transitioning the subscriber station to steady state operation when the gated pilot signal is found.
3 more elements
A receiver, comprising:
- an antenna;
- a radio frequency (RF) section operably connected to the antenna;
- a memory operably connected to the RF section to store a number of chips corresponding to a time period equal to or greater than a period of a gated pilot signal burst;
- a demodulator;
- a searcher operably connected to the demodulator and configured to:
- determine whether a gated pilot signal is lost due to fading;
- and
- search for the gated pilot signal using pilot offsets of a last known coset of the gated pilot signal in response to a determination that the gated pilot signal is lost due to a reason other than fading;
- and
- a processor coupled to the searcher.
7 more elements
A receiver, comprising:
- an antenna to acquire a gated pilot signal, wherein the gated pilot signal is part of a particular coset of a plurality cosets, the particular coset including pilot offsets that share a set of symbols;
- a radio frequency (RF) section operably connected to the antenna;
- a memory operably connected to the RF section to store a number of chips equal to or greater than a period of a gated pilot signal burst;
- a demodulator;
- a processor configured to determine whether the gated pilot signal is lost due to fading;
- and
- a searcher operably connected to the demodulator and to the processor and configured to search for the gated pilot signal using the pilot offsets of the particular coset when the gated pilot signal is not lost due to fading.
4 more elements
A non-transitory computer-readable medium comprising instructions, that when executed by a processor, cause the processor to:
- acquire, at a subscriber station, a gated pilot signal, wherein the gated pilot signal is part of a particular coset of the plurality of cosets, the particular coset including pilot offsets that share a set of symbols;
- determine whether the gated pilot signal is lost due to fading;
- and
- in response to a determination that the gated pilot signal is lost due to a reason other than fading, search the pilot offsets of the particular coset for the gated pilot signal.
1 more element
A method comprising:
- acquiring a gated pilot signal at a subscriber station, wherein the gated pilot signal is part of a particular coset of a plurality of cosets, the particular coset including pilot offsets that share a set of symbols;
- determining whether the gated pilot signal is lost due to fading;
- and
- in response to a determination that the gated pilot signal is lost due to a reason other than fading, searching the pilot offsets of the particular coset for the gated pilot.
1 more element
Dependencies are inferred from the claim text.