What is IPDL (Idle periods in downlink)?

Idle Periods in the Downlink (IPDL) is an element in which the transmitter is switched off in Node-B discontinuously for all channels for brief timeframes, known as idle periods. There are two modes in which IPDL can work, ceaselessly. The test set assists both of these modes. This offers the UE a chance to make more precise estimations of adjoining cells that are needed for applications, for example, position assurance.