DRX operation for UL/DL reconfiguration
View Patent ↗In embodiments, apparatuses, methods, and storage media may be described for identifying subframes in a radio frame on which a UE may receive a Physical Downlink Control Channel (PDCCH) or enhanced PDCCH (ePDCCH) transmission. Specifically, the UE may receive multiple indications of uplink/downlink (UL/DL) subframe configurations and identify one or more subframes in which the UE may receive the PDCCH or ePDCCH transmission. The UE may then monitor one or more of the identified subframes and base discontinuous reception (DRX) timer functionality on one or more of the identified subframes.
1. One or more non-transitory computer-readable media comprising instructions that, when executed by one or more processors, are to:
identify, based on an indication of a downlink-reference (DL-reference) uplink/downlink (UL/DL) subframe configuration received via one or more radio resource control (RRC) signals, a value of k subframes associated with an interval between a DL transmission and a UL hybrid automatic repeat request (HARQ) feedback related to the DL transmission in accordance with the DL-reference UL/DL configuration;
identify a HARQ round-trip time (RTT) of k+4 subframes based on the value of k subframes; and
perform a HARQ process related to the HARQ RTT of k+4 subframes.
2. The one or more non-transitory computer-readable media of claim 1 , wherein the DL transmission is a physical downlink shared channel (PDSCH) transmission.
3. The one or more non-transitory computer-readable media of claim 1 , wherein the DL transmission is a time division duplexed (TDD) DL transmission.
4. The one or more non-transitory computer-readable media of claim 1 , wherein the HARQ process includes activation of a timer related to retransmission of the DL transmission in response to the UL HARQ feedback.
5. An apparatus comprising:
means to receive an indication of a downlink-reference (DL-reference) uplink/downlink (UL/DL) subframe configuration via one or more radio resource control (RRC) signals;
means to identify, based on the indication, a value of k subframes associated with an interval between a DL transmission and a UL hybrid automatic repeat request (HARQ) feedback related to the DL transmission in accordance with the DL-reference UL/DL configuration;
means to identify a HARQ round-trip time (RTT) of k+4 subframes based on the value of k subframes; and
means to perform a HARQ process related to the HARQ RTT of k+4 subframes.
6. The apparatus of claim 5 , wherein the DL transmission is a physical downlink shared channel (PDSCH) transmission.
7. The apparatus of claim 5 , wherein the DL transmission is a time division duplexed (TDD) DL transmission.
8. The apparatus of claim 5 , wherein the HARQ process is a HARQ retransmission process.
9. A user equipment (UE) comprising:
a processor to:
identify, based on an indication of a downlink-reference (DL-reference) uplink/downlink (UL/DL) subframe configuration received via one or more radio resource control (RRC) signals, a first subframe associated with a DL transmission and a second subframe associated with a UL hybrid automatic repeat request (HARQ) feedback related to the DL transmission in accordance with the DL-reference UL/DL configuration;
identify, based on an interval between the first subframe and the second subframe, a value of k subframes; and
activate a timer related to a value of k+4 subframes; and
transceiver circuitry coupled with the processor, the transceiver circuitry to:
receive the DL transmission and the indication of the DL-reference UL/DL subframe configuration; and
transmit the UL HARQ feedback.
10. The UE of claim 9 , wherein the DL transmission is a time division duplexed (TDD) physical downlink shared channel (PDSCH) transmission.
11. The UE of claim 9 , wherein the value of k+4 subframes is related to a HARQ round-trip time (RTT).
12. The UE of claim 9 , wherein the timer is related to a HARQ retransmission.
13. The UE of claim 9 , where the DL transmission is a time division duplex (TDD) transmission.
14. An apparatus comprising:
one or more processors; and
one or more non-transitory computer-readable media comprising instructions, that when executed by the one or more processors, cause the one or more processors to:
identify, based on an indication of a downlink-reference (DL-reference) uplink/downlink (UL/DL) subframe configuration received via one or more radio resource control (RRC) signals, a value of k subframes associated with an interval between a DL transmission and a UL hybrid automatic repeat request (HARQ) feedback related to the DL transmission in accordance with the DL-reference UL/DL configuration;
identify a HARQ round-trip time (RTT) of k+4 subframes based on the value of k subframes; and
perform a timer related to the HARQ RTT of k+4 subframes.
15. The apparatus of claim 14 , wherein the DL transmission is a physical downlink shared channel (PDSCH) transmission.
16. The apparatus of claim 14 , wherein the DL transmission is a time division duplexed (TDD) DL transmission.
17. The apparatus of claim 14 , wherein the timer is related to retransmission of the DL transmission in response to the UL HARQ feedback.