hrough pre-negotiated periodic absence of the MS from the serving BS. The pattern of such a periodic absence is referred to as Collocated Coexistence (CLC) class. The following CLC class parameters are defined: CLC Start Time: the start time of a CLC class; CLC Active Interval: the time duration of a CLC class designated for collocated non-IEEE 802.16m radio activities; CLC Active Cycle: the time interval corresponding to active pattern of a CLC class repeating; CLC Active Ratio: the time ratio of CLC active intervals to CLC active cycle of a CLC class; Number of Active CLC Classes: the number of active CLC classes of the same type of an MS. CHAPTER 6 The IEEE 802. 16m MAC CPS (Part I) Table 6-10 Collocated Coexistence Class Parameters [2] Active Active Start Cycle Interval Type I Microsecond Subframe Subframe 8 Subframes (5 ms) Type Il Frame Subframe Frame 64 Subframes (40 ms) Type III Superframe Superframe Applicable applicable applicable Superframes (3 seconds) The IEEE 802. 16m supports three CLC classes and they differ from each other in terms of the time unit of CLC start time, active cycle, and active interval, as shown in Table 6-10. Type I CLC class is recommended for non-IEEE 802.16m multi-radio activity that is low duty cycle and may not be aligned with the IEEE 802.16m radio frame boundary. Type II CLC class is recommended for scheduling flexibility. Type III CLC class is recommended for continuous non-IEEE 802.16m multi- radio activity that lasts in the order of a few seconds and has only one cycle. The MS determines CLC active interval and cycle based on the activities of its collocated non- IEEE 802.16 multi-radios. The MS determines CLC start time only for Type I CLC class and the BS determines CLC start time for Type II and III CLC classes to ensure scheduling flexibility. The serving BS does not schedule A-MAP, user data, and HARQ feedback associated with the mobile station in the CLC active interval of an active CLC class. The downlink or uplink or both transmissions may be prohibited depending