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请教DRX问题。
提问者:erbozi   |  提问时间:2011-8-2 17:33
1、UE处于DRX Sleep状态不监控PDCCH,其他信道是否监控,比如PHICH? 2、使能DRX情况下,UE接收eNB NACK和UL grant的TTI处于Active状态,接收ACK可以处于Sleep状态,UE是如何做到的? 多谢。
上行重传分为自适应和非自适应两种,如果是下发UL Grant或NACK+UL Grant,那么是自适应重传,如果只下发NACK,则为非自适应重传。
对于DRX来说,是不是UE sleep时,只下发NACK触发非自适应重传;而在UE active时,下发UL Grant或者NACK+UL Grant触发自适应重传?
这个在协议文本里也有体现:
36.213
For FDD and normal HARQ operation, the UE shall upon detection of a PDCCH with DCI format 0 and/or a PHICH transmission in subframe n intended for the UE, adjust the corresponding PUSCH transmission in subframe n+4 according to the PDCCH and PHICH information. 注意其中的and/or
36.321

For each TTI, the HARQ entity shall:
- identify the HARQ process associated with this TTI;
- if an uplink grant has been indicated for this TTI:
。。。

- else:
- deliver the uplink grant and the HARQ information (redundancy version) to the identified HARQ process;
- instruct the identified HARQ process to generate an adaptive retransmission.
- else, if the HARQ buffer of the HARQ process corresponding to this TTI is not empty:
- instruct the identified HARQ process to generate a non-adaptive retransmission.
回答时间:2011-8-3 11:19
 
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