[5GNR]NR中Discontinuous Reception for paging（DRX）一些困惑

sj_123456

在38.304中协议中有一段这样的描述：
When SearchSpaceId other than 0 is configured for pagingSearchSpace, the UE monitors the (i_s + 1)th PO. A PO is a set of 'S' consecutive PDCCH monitoring occasions where 'S' is the number of actual transmitted SSBs determined according to ssb-PositionsInBurst in SIB1. The Kth PDCCH monitoring occasion for paging in the PO corresponds to the Kth transmitted SSB. The PDCCH monitoring occasions for paging which do not overlap with UL symbols are sequentially numbered from zero starting from the first PDCCH monitoring occasion in the PF. When firstPDCCH-MonitoringOccasionOfPO is present, the starting PDCCH monitoring occasion number of (i_s + 1)th PO is the (i_s + 1)th value of the firstPDCCH-MonitoringOccasionOfPO parameter; otherwise, it is equal to i_s * S.
这段话我理解起来仍然有几个疑惑：
1、当SearchSpaceId 不为 0时,PO是一组S个PDCCH监控时机，S又是SSB的数量，那是不是说每个SSB后面都有一个paging 的SearchSpace？
2、如果1为真，pagingSearchSpace定义的周期跟SSB的周期一样的了，这样一来pagingSearchSpace中的monitoringSlotPeriodicityAndOffset也会定义一个周期，不会冲突吗？
3、协议上为什么要说一句The PDCCH monitoring occasions for paging which do not overlap with UL symbols are sequentially numbered from zero starting from the first PDCCH monitoring occasion in the PF（从PF中的第一PDCCH监视时机开始，从零开始顺序编号不与UL符号重叠的用于寻呼的PDCCH监视时机）这样的话？为什么要避开上行重复的symbol？

来来来，大牛们请开始表演，谢谢！