I have read the Intel Edison Bluetooth Guide Chapter 6 and it tells me how to unblock the Bluetooth and connect to other devices (bluetoothctl---scan on---connect). I found my BLE device and connected to it successfully.
My ideas is I want to customization blue tooth on Edison. Only my BT sensor need to communicate to the Edison over BT.
Please proved how to customization the bluez stack for Edison.
I don't understand what you want to achieve, could you please explain us a little bit more about what you would like to do? Nevertheless, if you would like to modify the BlueZ stack, I suggest you to contact BlueZ ( http://www.bluez.org/contact/) as they should be able to provide you more accurate help.
As I mentioned, if you would like to modify the BlueZ stack you should refer to BlueZ ( http://www.bluez.org/contact/). They are the developers of the API therefore they should be able to provide you a more accurate support in this regard.