 on the configuration of the CLC class, where the default action is that both DL and UL allocations are prohibited (see Figure 6-26). The support of all three types of CLC classes is mandatory for the BS and optional for the MS. The serving BS manages each type of CLC class with the following three limits: R: maximum CLC active ratio (%); Ti: maximum CLC active interval; N: maximum number of active CLC classes. Where index i is set to 1, 2, or 3 to indicate Type I, II, and III CLC class, respectively. The BS may include the CLC limits in AAI_REG-RSP. The higher value of a limit indicates more support for non- IEEE 802.16m multi-radio activities. The CLC limits must exceed the default values in Table 6-10. In the example shown in Figure 6-26, the pre-allocated first re-transmission falls in a CLC active interval and the serving BS reschedules the HARQ re-transmission in the next available subframe. The static time relevance to the initial transmission is no longer valid and the serving BS sends A-MAP to notify the MS where the rescheduled HARQ feedback is located. The serving BS synchronously schedules the second re-transmission according to the rescheduled first re-transmission. A CLC class remains active until it is deactivated by the MS in one of the Connected State modes. The MS may skip scanning operation in a scan interval, if it overlaps with a CLC active interval. The MS and the serving BS locally deactivate all CLC classes after the MS enters Idle State. During handover preparation, the new BS may obtain information about active CLC classes from the previous Rescheduled Initial First A-MAP First Second A-MAP Transmission Retransmission Retransmission Retransmission CLC Active Interval Subframe (No Transmission) Radio Frame k Radio Frame k+1 Radio Frame k+2 Radio Frame k+3 Rescheduling Synchronous HARQ Retransmissions to Avoid CLC Active Interval ULUULDLDLDL UL UL Subframe CLC Active Interval CLC Active Interval (No Transmission) (No Transmission) Radio Frame k Radio Frame k+1 Radio Frame p Radio Frame p+1