To the original poster and other budding network optimisation gurus.

Do you even know where to start?

Whats your issue with? Data, voice?

The network signal strength is a continously changing parameter that is managed by both the network equipment and the device connected to it, automatically.

Depending on if you are connected to 2G, 3G, if your device is idle, if it is has a data context, your location, the number of other devices connected to the cell, the network and device will manage the power of the transmitted signal from the network.

If you have issues with your signal strength I would suggest you contact the network you subscribe to.

If you don't get good service, move to another network.

If you still want to learn more, I'd suggest you start reading aboutRadio Resource Management: http://en.wikipedia.org/wiki/Radio_resource_management

Hope that helps.