01-01-2009 10:39 PM
Solved! Go to Solution.
01-02-2009 01:37 AM
GPS Power consumption makes a huge difference. It has been my experience with the BB Storm + Verizon that setting power consumption to high (THE DEFAULT) will cause the GPS to not function. It simply changes the GPS status to temporarily unavailable.
Currently, I'm using power consumption low, which is extremely accurate (within 30 meters usually).
01-02-2009 05:12 AM
01-02-2009 07:26 AM
I haven't checked the implementation notes lately but there is also cost. You would need to compare the
performance of a typical chip like the sirf above, to alternative approaches. Presumably power consumption
just refers to the battery in your phone and would be reduced if you can get info from the carriers with
minimal RF power usage but they may charge. I'm not sure what the limits are on this approach
with cooperating carriers but with the simple tower position information it isn't much better than a fraction of a cell size.
01-02-2009 11:45 AM - edited 01-02-2009 11:47 AM
Cost, Accuracy and Power Consumption are all JSR-179 selection criteria. Instead of explicitly selecting the location provider you want (autonomous(gps), assisted or cellsite) the JSR makes you define a set of acceptable criteria then the API decides which to give you based on the capabilities of the device and network.
This link has the table that shows what location providers meet what criteria...
This link has a table that specified the capabilities of BlackBerry devices...