having RS and SCH subcarrier power higher than -124 to -121 dBm (depending on band) and subcarrier SNR of >-4 dB. The values are for one layer, and for multiple layers the requirements are multiplied by the number of layers. Table Minimum requirements for LTE measurements when UE is in idle mode or CELL_PCH in 3G measureE-UTRA TevaluateEUTRA DRX cycle length TdetectE-UTRA (seconds) (number of (seconds) (number of (seconds) (seconds) DRX cycles) DRX cycles) 2.56 (32) 7.68 (96) 2.56 (16) 7.68 (48) 5.12 (16) 15.36 (48) 5.12 (8) 15.36 (24) 6.4 (5) 19.2 (15) 7.68 (3) 23.04 (9) 10.24 (2) 30.72 (6) LTE Small Cell Optimization new PCIs found in cell search 120 se seconds seconds seconds seconds seconds seconds seconds seconds pci157 pci405 pci157 pci405 pci157 pci157 pci405 pci157 pci405 pci157 pci201 pci447 pci201 pci447 pci201 pci201 pci447 pci201 pci447 pci201 pci127 pci199 pci127 pci199 pci310 pci310 Figure 14.7 Idle mode and CELL_PCH search and measurement schedule for a commercial UE when accelerated high-priority search is not used. Two LTE layers broadcast in SIB19. New PCIs found in the second search step are shown in bold The third column in the table is the minimum measurement interval of cells that have been found in the search step. The last column is the maximum cell measurement time before the cell reselection decision must be made if a suitable candidate exists. In other words it can be interpreted as the maximum allowed averaging time of measurements. Figure 14.7 shows an example of a LTE search and measurement schedule of a commer- cial UE with two higher priority LTE layers (LTE800, LTE2600) when the UE is camping in one 3G cell without cell reselection triggered. In this case, Sprioritysearch = 0 and Sprioritysearch2 = 0 and consequently the search interval is 2 X 60 = 120 seconds; the UE under test searches both layers at one go once every 120 seconds which satisfies the 3GPP requirement. With three higher priority layers the corresponding search interval would be 180 seconds. The cell measurements a