name: IPDL
full_form: Idle Periods in the DownLink
context: To achieve the desired accuracy in the location estimates, the RTD needs to be known to (at least) the same level of accuracy as the OTDOA measurements. Whether the downlink transmissions are synchronised or their time offset measured, the timing offsets shall be reported to the highest resolution available. A resolution of [1/8 chip duration] is suggested as a design goal. The minimum resolution shall be [1/4 chip duration]. It is likely that various node-B will have different capability of measurement resolution. These may range from one or more chip times to small fractions of chip times and shall be indicated to the LCS process by appropriate class marks and signalling. If the timing of transmissions at the base stations is synchronised, so that the RTD is maintained approximately constant, the maximum jitter in the transmission timing shall not exceed [1/8 chip duration]. The RTD measurement shall also be able to report the time-of-day the measurements were made. [The frame number
description: Idle Periods in the DownLink (IPDL) refers to a set of parameters that define the idle periods in the downlink direction for OTDOA Radio Interface timing. These parameters are used to configure and activate IPDL in both TDD and FDD modes of operation, but with different necessary parameters for each mode.
explanation: The context describes IPDL as a set of parameters that define idle periods in the downlink direction, which are used to configure and activate IPDL. This indicates that IPDL is not a network function, interface, or technology itself, but rather a set of configuration settings used in the OTDOA Radio Interface timing process.
section_title: 7.3	OTDOA Idle Periods
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biotag_Description: B-Parameter,I-Parameter,I-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,B-Interface,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,B-Technology,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O