ulticast transmission will, on average, use more resources (e.g., higher transmission power) compared to a single unicast transmission. This means that the interference caused to neighbor cells by a multicast transmission will be higher and the tolerance to interfer- ence will be lower than in a unicast transmission. Therefore, the intercell interference coordination between neighbor cells can be equally, or even more, important for the multicast transmission case as compared to the unicast transmission. One difference, though, between the unicast and the multicast intercell interfer- ence coordination is that, although in the unicast case the coordination is more eas- ily done in the frequency domain than in the time domain, in the multicast case it is just the opposite. The MBMS transmissions are typically periodic in time (i.e., there is MBMS transmission in only every Nth subframe and, when there is MBMS trans- mission in the given subframe, all RBs in the subframe are used for MBMS-that is, no unicast data are sent in the same subframe). This is especially true for MBSFN transmission where, according to the L1 specification, MBSFN and non-MBSFN transmission cannot occur in the same subframe. For single-cell transmission, mul- ticast (non-MBSFN) and unicast transmission may occur in the same subframe. See also Section 4.2.5 for more details on intercell interference coordination. 4.3 Radio Resource Management Related Measurements Because the operation of E-UTRA-including channel-dependent scheduling, power control, idle and connected mode mobility, admission control, and radio resource management in general-relies on measured values, it is natural that the various physical layer measurements are instrumental in LTE. Recognizing this, the 3GPP has defined the basic measurement-related requirements and the physical layer measurements in 3GPP TR 36.801 [19] and 3GPP TS 36.214 [20], respec- tively. The most important measurement aspects include the usefulness, accuracy, and complexity of a particular measurement 