Method and apparatus to optimize off-frequency pilot searching by wireless mobile station
First Claim
1. A method for operating a wireless mobile telephone, comprising:
- determining whether an off-frequency searching condition is satisfied;
performing a frequency search process including on-frequency pilot signal searching upon at least one prescribed active set frequency; and
if the off-frequency searching condition is satisfied additionally performing off-frequency pilot signal searching upon at least one neighboring base station frequency.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless mobile telephone (400) is operated so as manage the performance of “off-frequency searches,” that is, searches for base station pilot signals that differ in frequency from the pilot signals in the mobile station'"'"'s active set. Whenever frequency searching is performed (such as responsive to emerging from a reduced-power sleep mode), the mobile station performs on-frequency pilot signal searching (902) upon a prescribed active set frequency. Only if a prescribed off-frequency searching condition (903-908) is satisfied, the mobile station additionally performs off-frequency pilot signal searching (912) upon one or more neighboring base stations'"'"' frequencies.
51 Citations
34 Claims
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1. A method for operating a wireless mobile telephone, comprising:
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determining whether an off-frequency searching condition is satisfied;
performing a frequency search process including on-frequency pilot signal searching upon at least one prescribed active set frequency; and
if the off-frequency searching condition is satisfied additionally performing off-frequency pilot signal searching upon at least one neighboring base station frequency. - View Dependent Claims (2, 3)
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4. A method for operating a wireless mobile communications device, comprising:
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determining whether a off-frequency searching condition is satisfied;
performing pilot signal searching; and
if the off-frequency searching condition is not satisfied, limiting the pilot signal searching to at least one active set frequency utilized by base stations of an active set of the device. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A signal-bearing medium tangibly embodying a program of machine-readable instructions executable by a digital data processor to manage a wireless mobile telephone, comprising:
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determining whether a off-frequency searching condition is satisfied;
performing a frequency search process including on-frequency pilot signal searching upon at least one prescribed active set frequency; and
if the off-frequency searching condition is satisfied additionally performing off-frequency pilot signal searching upon at least one neighboring base station frequency. - View Dependent Claims (12, 13)
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14. A signal bearing medium tangibly embodying a program of machine-readable instructions executable by a digital data processor to manage a wireless communications device, comprising:
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determining whether a off-frequency searching condition is satisfied;
performing pilot signal searching; and
if the off-frequency searching condition is not satisfied, limiting the pilot signal searching to at least one active set frequency utilized by base stations of an active set of the device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. Circuitry including multiple interconnected electrically conductive elements configured to perform operations to manage a wireless mobile telephone, comprising:
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determining whether a predetermined off-frequency searching condition is satisfied;
performing a frequency search process including on-frequency pilot signal searching upon at least one prescribed active set frequency, and only if the off-frequency searching condition is satisfied additionally performing off-frequency pilot signal searching upon at least one neighboring base station frequency. - View Dependent Claims (22, 23)
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24. Circuitry including multiple interconnected electrically conductive elements configured to perform operations to operate a wireless communications device, the operations comprising:
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determining whether a predetermined off-frequency searching condition is satisfied;
performing pilot signal searching, and unless the off-frequency searching condition is satisfied, limiting the pilot signal searching to at least one active set frequency utilized by base stations of an active set of the device. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A wireless mobile telephone, comprising:
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a transceiver;
a speaker;
a microphone;
a user interface;
a manager, coupled to the transceiver, speaker, microphone, and display, and programmed for;
determining whether a off-frequency searching condition is satisfied;
performing a frequency search process including on-frequency pilot signal searching upon at least one prescribed active set frequency; and
if the off-frequency searching condition is satisfied additionally performing off-frequency pilot signal searching upon at least one neighboring base station frequency.
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32. A wireless communications device, comprising:
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a transceiver;
a speaker;
a microphone;
a user interface; and
a manager, coupled to the transceiver, speaker, microphone, and display, comprising;
means for determining whether a off-frequency searching condition is satisfied;
means for performing pilot signal searching; and
means for limiting the pilot signal searching to at least one active set frequency utilized by base stations of an active set of the device if the off-frequency searching condition is not satisfied.
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33. A wireless mobile telephone, comprising:
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transceiver means for wireless transmitting and receiving signals;
speaker means for producing audio output;
microphone means for a microphone;
user interface means for receiving user input and providing human-readable output; and
manager means, coupled to the transceiver means, speaker means, microphone means, and user interface means, comprising;
means for determining whether a off-frequency searching condition is satisfied;
means for performing a frequency search process including on-frequency pilot signal searching upon at least one prescribed active set frequency; and
means for performing off-frequency pilot signal searching upon at least one neighboring base station frequency if the off-frequency searching condition is satisfied.
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34. A wireless communications device, comprising:
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transceiver means for wireless transmitting and receiving signals;
speaker means for producing audio output;
microphone means for a microphone;
user interface means for receiving user input and providing human-readable output;
manager means, coupled to the transceiver means, speaker means, microphone means, and user interface means, for performing operations comprising;
determining whether a predetermined off-frequency searching condition is satisfied;
performing pilot signal searching, and unless the off-frequency searching condition is satisfied, limiting the pilot signal searching to at least one active set frequency utilized by base stations of an active set of the device.
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Specification