System and method to obtain signal acquisition assistance data

A telecommunications system receiver comprising:

• obtaining means for obtaining acquisition assistance data;
• acquiring means for acquiring a first signal at the receiver using the obtained acquisition assistance data;
• means for using a location of the receiver obtained using the first signal to make a validity determination of whether the obtained acquisition assistance data are valid;
• calculating means for calculating, based on the obtained acquisition assistance data and the location of the receiver, and in response to the validity determination indicating that the obtained acquisition assistance data are not valid, updated acquisition assistance data to acquire a second signal;
• and
• means for setting a code phase window size responsive to the updated acquisition assistance data.

A computer program product, for acquiring signals at a telecommunications system receiver, residing on a non-transitory processor-readable medium comprising instructions configured to cause a processor to:

• obtain acquisition assistance data;
• acquire a first signal at the receiver using the obtained acquisition assistance data;
• make a validity determination, using a location of the receiver obtained using the first signal, of whether the obtained acquisition assistance data are valid;
• calculate, based on the obtained acquisition assistance data and the location of the receiver, and in response to the validity determination indicating that the obtained acquisition assistance data are not valid, updated acquisition assistance data to acquire a second signal;
• and
• set a code phase window size responsive to the updated acquisition assistance data.

A wireless communication apparatus comprising:

• a memory to store computer instructions;
• and
• a processor-based device configured to cause, when executing the computer instructions stored in the memory, operations comprising:
• obtaining acquisition assistance data;
• acquiring a first signal using the obtained acquisition assistance data;
• using a location of the apparatus obtained using the first signal to make a validity determination of whether the obtained acquisition assistance data are valid;
• calculating, based on the obtained acquisition assistance data and the location of the apparatus, and responsive to the validity determination indicating that the obtained acquisition assistance data are not valid, updated acquisition assistance data to acquire a second signal;
• and
• setting a code phase window size responsive to the updated acquisition assistance data.