在iOS中的后台进程中检测信标

I want to run a background process that periodically gets a notification of beacons. The beacons are by default setup to transmit data every 500 ms. I only want my background process to get a notification every 5 minutes. The beacon's interval of transmitting can be adjusted, so I'm not sure if that is something I need to take into account when creating a background process. What isn't clear to me is how iOS detects what it calls beacon "updates". Reading the documentation, it almost sounds like the bluetooth framework only detects updates. What exactly are updates? The data being transmitted by the beacon is always the same, so no updates (that is, changes) are made.I want to run a background process that periodi