herwise. The values in the table apply to 'raw' physical layer measurement before any L3 filtering. The actual event triggering delay depends on the L3 filtering coefficient and time to trigger for the event. So far the discussion has revolved around physical layer measurement requirements. The raw measurement values provided by the UE physical layer are passed to RRC layer at the interval given in Table 15.7. RRC layer then processes the measurements in two steps: Filtering raw measurement results based on a recursive filter where the amount of averaging can be controlled by the filter coefficient parameter that can be optionally sent to the UE in measurement configuration For the filtered measurements, continuously evaluating if entry condition for any of the events configured to be reported is satisfied; if yes, then sending a measurement report to the eNodeB The L3 filtering is defined for physical layer log-scale measurement samples Mn, 0,1,2, , as [4] Fn=(1-a)Fn-1+aMn where a = 2^ ((fc/4) is the filter coefficient. The value of fc is optionally signalled to the UE in measurement configuration, the default value being fc = 4 (a = 0.5). The filtered measurement quantity (e.g. RSRP, RSRQ, RSCP) F is used in the evaluation of event triggering. Since E- UTRA measurement bandwidth is at least 1.4 MHz, and typically much larger, there is usually no motivation to use long averaging since small-scale fading is already averaged by the large measurement bandwidth. This is in contrast to narrow-band RATs, such as GSM, where the amount of signal power fading is stronger and consequently either longer time averaging or larger handover margins (or both) are required. Figure 15.5 illustrates the L3 filtering with two different coefficients, fc = 4 and fc = 13. Also the continuous wideband power and the raw measurement sampling points at 480-ms interval are shown; the sampling points correspond to L3 filter with fc = 0. The first measurement sample at time = 0 ms sets the initial filter value. The signal filtered with the c