NR/5G - PDSCH调度的一些限制
协议描述中经常可以看到这样的描述“The UE is not extpected to ……”,UE不期望接收到……的调度,是对调度做了一些限制。 在38.214的5.1节中,对PDSCH的调度也做了一系列的限制。 For any HARQ process ID(s) in a given scheduled cell, the UE is not expected to receive a PDSCH that overlaps in time with another PDSCH. 这里针对的主要是需要进行HARQ-ACK反馈的PDSCH,在HARQ-ACK的Semi-static反馈方式介绍( TypeI -- Semi-static HARQ-ACK比特数确定 )中,为了减少反馈比特数,会把PDSCH时域重叠的Candidate进行一些合并处理。 The UE is not expected to receive another PDSCH for a given HARQ process until after the end of the expected transmission of HARQ-ACK for that HARQ process, where the timing is given by Subclause 9.2.3 of [6].