Method and apparatus for performing acquisition in power save mode for wireless communication systems

An apparatus comprising:

• means for determining a set of channels carrying encoded digital signals in a wireless communication system on which to attempt acquisition;
• means for initiating acquisition attempts on the channels in the set using a first digital signal acquisition mode after a desired time delay;
• and
• means for initiating acquisition attempts on the channels in the set using a second digital signal acquisition mode after the desired time delay.

An apparatus comprising:

• means for determining a set of channels in a wireless communication system on which to attempt acquisition;
• means for sorting the channels in the set in an order determined by amount of elapsed time since the channels were last acquired, and wherein a first channel is a most recently acquired channel among the channels in the set;
• and
• means for initiating acquisition attempts on the channels in the set, wherein acquisition is attempted on the first channel in the set after a first time delay and prior to an acquisition attempt on each of the remaining channels in the set, wherein the acquisition attempt on each of the remaining channels in the set is attempted after a second time delay.

An apparatus comprising:

• means for determining a set of channels in a wireless communication system on which to attempt acquisition;
• means for sorting the channels in the set in an order determined by amount of elapsed time since the channels were last acquired;
• means for obtaining received signal strength estimates for the channels in the set;
• and
• means for initiating acquisition attempts on the channels in the set based on the received signal strength estimates obtained for the channels after a desired time delay.

A method for acquiring a wireless communication system, comprising:

• determining a set of channels carrying encoded digital signals in the wireless communication system on which to attempt acquisition in an acquisition control unit;
• initiating acquisition attempts on the channels in the set using a first digital signal acquisition mode after a desired time delay;
• and
• initiating acquisition attempts on the channels in the set using a second digital signal acquisition mode after the desired time delay, wherein the acquisition attempts comprise:
• receiving a forward link signal from a base station on a particular channel by an antenna;
• digitizing the received forward link signal in a receiver unit to obtain data samples;
• processing the data samples in a demodulator to obtain pilot estimates for the particular channel that the forward link signal was received;
• and
• determining whether the pilot estimates is sufficient to support communication.

A method for acquiring a wireless communication system, comprising:

• determining a set of channels in the wireless communication system on which to attempt acquisition in an acquisition control unit, wherein the channels in the set are sorted in an order determined by amount of elapsed time since the channels were last acquired;
• and
• initiating acquisition attempts on selected channels in the set, wherein acquisition is attempted on a first channel in the set after a first time delay and prior to an acquisition attempt on the remaining channels in the set, wherein an acquisition attempt on a second channel in the set is attempted after a second time delay, and wherein the acquisition attempts comprise:
• receiving a forward link signal from a base station on the selected channel in the ser by an antenna;
• digitizing the received forward link signal in a receiver unit to obtain data samples;
• processing the data samples in a demodulator to obtain pilot estimates for the particular channel that the forward link signal was received;
• and
• determining whether the pilot estimates is sufficient to support communication.

A method for acquiring a wireless communication system, comprising:

• determining a set of channels in the wireless communication system on which to attempt acquisition in an acquisition control unit, wherein the channels in the set are sorted in an order determined by amount of elapsed time since the channels were last acquired;
• obtaining received signal strength estimates for the channels in the set from a demodulator;
• and
• initiating acquisition attempts on the channels in the set based on the received signal strength estimates obtained for the channels after a desired time delay.

A computer program product, comprising:

• computer-readable medium comprising:
• code for causing a computer to determine a set of channels carrying encoded digital signals in a wireless communication system on which to attempt acquisition;
• code for causing a computer to initiate acquisition attempts on the channels in the set using a first digital signal acquisition mode after a desired time delay;
• and
• code for causing a computer to initiate acquisition attempts on the channels in the set using a second digital signal acquisition mode after the desired time delay.

A computer program product, comprising:

• computer-readable medium comprising:
• code for causing a computer to determine a set of channels in a wireless communication system on which to attempt acquisition;
• code for causing a computer to sort the channels in the set in an order determined by amount of elapsed time since the channels were last acquired, and wherein a first channel is a most recently acquired channel among the channels in the set;
• and
• code for causing a computer to initiate acquisition attempts on the channels in the set, wherein acquisition is attempted on the first channel in the set after a first time delay and prior to an acquisition attempt on each of the remaining channels in the set, wherein the acquisition attempt on remaining channels in the set is attempted after a second time delay.

A computer program product, comprising:

• computer-readable medium comprising:
• code for causing a computer to determine a set of channels in a wireless communication system on which to attempt acquisition;
• code for causing a computer to sort the channels in the set in an order determined by amount of elapsed time since the channels were last acquired;
• code for causing a computer to obtain received signal strength estimates for the channels in the set;
• and
• code for causing a computer to initiate acquisition attempts on the channels in the set based on the received signal strength estimates obtained for the channels after a desired time delay.