Method for transmitting uplink data, user equipment, and base station
View Patent ↗Embodiments of the present invention provide a method for transmitting uplink data, user equipment, and a base station. The method includes: when user equipment UE correctly receives, in a subframe n, downlink control signaling used for instructing the UE to transmit a physical uplink shared channel PUSCH, determining, by the UE according to the downlink control signaling and a subframe bundling configuration, a bundled subframe for transmitting the PUSCH, where the subframe bundling configuration includes a quantity of bundled subframes; and transmitting the PUSCH in the bundled subframe. In the embodiments of the present invention, a bundled subframe is introduced, which increases scheduling resources for a PUSCH, and enhances coverage performance of a signal.
1. A method for transmitting uplink data, the method comprising:
when user equipment (UE) correctly receives, in a subframe n, downlink control signaling used for instructing the UE to transmit a physical uplink shared channel (PUSCH), determining, by the UE according to the downlink control signaling and a subframe bundling configuration, a bundled subframe for transmitting the PUSCH, wherein the subframe bundling configuration comprises a quantity of bundled subframes;
when the UE does not correctly receive the downlink control signaling, determining, by the UE, the bundled subframe according to a physical hybrid automatic repeat request indicator channel (PHICH) used for instructing the UE to transmit the PUSCH and the subframe bundling configuration, wherein a receiving subframe of the PHICH is the l th subframe before the subframe n; and
transmitting, by the UE, the PUSCH in the bundled subframe.
2. The method according to claim 1 , wherein a current uplink/downlink subframe configuration is a configuration 0, a quantity of bundled subframes is an integer greater than or equal to 1 and less than or equal to 12, a start subframe of the bundled subframe is the k th subframe located after a subframe n, and n and k meet:
when n=0, k=4 or 7;
when n=5, k=4 or 7;
when n=1, k=6 or 7; or
when n=6, k=6 or 7.
3. The method according to claim 2 , wherein the quantity of bundled subframes is 12, and a quantity of hybrid automatic repeat request (HARQ) processes or a quantity of subframe bundling configurations of the UE is 1.
4. The method according to claim 2 , wherein:
the quantity of bundled subframes is less than 12, and a quantity of HARQ processes or a quantity of subframe bundling configurations of the UE is greater than 1.
5. The method according to claim 1 , wherein:
a current uplink/downlink subframe configuration is a configuration 1, the quantity of bundled subframes is 2, a quantity of HARQ processes or a quantity of subframe bundling configurations is 3, and a start subframe of the bundled subframe is the k th subframe located after a subframe n.
6. The method according to claim 5 , wherein n, l, and k meet:
when n=6, k=6 and l=2; or
when n=1, k=6 and l=2.
7. The method according to claim 5 , wherein n, k, and l meet:
when n=4, k=4 and l=3; or
when n=9, k=4 and l=3.
8. The method according to claim 1 , wherein a current uplink/downlink subframe configuration is a configuration 2, the quantity of bundled subframes is an integer greater than or equal to 1 and less than or equal to 4, a start subframe of the bundled subframe is the k th subframe located after a subframe n, and a quantity of HARQ processes or a quantity of subframe bundling configurations of the UE is 3.
9. The method according to claim 8 , wherein:
the quantity of bundled subframes is 1; and
the method further comprises:
receiving, in the (l+k) th subframe after the subframe n, a physical hybrid automatic repeat request indicator channel (PHICH) used for indicating whether the PUSCH needs to be retransmitted, wherein n, k, and l meet:
when n=3, k=4 and l=11; or
when n=8, k=4 and l=11.
10. The method according to claim 8 , wherein the quantity of bundled subframes is 4, and an interval of two uplink subframes exists between adjacent subframes in the bundled subframe.
11. User equipment (UE), comprising:
a processor configured to:
when the UE correctly receives, in a subframe n, downlink control signaling used for instructing the UE to transmit a physical uplink shared channel (PUSCH), determine, according to the downlink control signaling and a subframe bundling configuration, a bundled subframe for transmitting the PUSCH, wherein the subframe bundling configuration comprises a quantity of bundled subframes;
when the UE does not correctly receive the downlink control signaling, determining, by the UE, the bundled subframe according to a physical hybrid automatic repeat request indicator channel (PHICH) used for instructing the UE to transmit the PUSCH and the subframe bundling configuration, wherein a receiving subframe of the PHICH is the l th subframe before the subframe n; and
a transmitter configured to: transmit the PUSCH in the bundled subframe determined by the processor.
12. The UE according to claim 11 , wherein a current uplink/downlink subframe configuration is a configuration 0, the quantity of bundled subframes is an integer greater than or equal to 1 and less than or equal to 12, a start subframe of the bundled subframe is the k th subframe located after a subframe n, and n and k meet:
when n=0, k=4 or 7;
when n=5, k=4 or 7;
when n=1, k=6 or 7; or
when n=6, k=6 or 7.
13. The UE according to claim 12 , wherein the quantity of bundled subframes is 12, and a quantity of hybrid automatic repeat request (HARQ) processes or a quantity of subframe bundling configurations of the UE is 1.
14. The UE according to claim 12 , wherein:
the quantity of bundled subframes is less than 12, and a quantity of HARQ processes or a quantity of subframe bundling configurations of the UE is greater than 1.
15. The UE according to claim 11 , wherein:
a current uplink/downlink subframe configuration is a configuration 1, the quantity of bundled subframes is 2, a quantity of HARQ processes or a quantity of subframe bundling configurations is 3, and a start subframe of the bundled subframe is the k th subframe located after a subframe n.
16. The UE according to claim 15 , wherein n, l, and k meet:
when n=6, k=6 and l=2; or
when n=1, k=6 and l=2.
17. The UE according to claim 15 , wherein n, k, and l meet:
when n=4, k=4 and l=3; or
when n=9, k=4 and l=3.
18. The UE according to claim 11 , wherein a current uplink/downlink subframe configuration is a configuration 2, the quantity of bundled subframes is an integer greater than or equal to 1 and less than or equal to 4, a start subframe of the bundled subframe is the k th subframe located after a subframe n, and a quantity of HARQ processes or a quantity of subframe bundling configurations of the UE is 3.
19. The UE according to claim 18 , wherein:
the quantity of bundled subframes is 1, and
the UE further comprises:
a receiver configured to receive, in the (l+k) th subframe after the subframe n, a physical hybrid automatic repeat request indicator channel (PHICH) used for indicating whether the PUSCH needs to be retransmitted, wherein n, k, and l meet:
when n=3, k=4 and l=11; or
when n=8, k=4 and l=11.
20. The UE according to claim 18 , wherein the quantity of bundled subframes is 4, and an interval of two uplink subframes exists between adjacent subframes in the bundled subframe.
21. A apparatus, comprising:
a memory storing instructions; and
a processor coupled to the memory to execute the instructions to:
when a UE correctly receives, in a subframe n, downlink control signaling used for instructing the UE to transmit a physical uplink shared channel (PUSCH), determine, according to the downlink control signaling and a subframe bundling configuration, a bundled subframe for transmitting the PUSCH, wherein the subframe bundling configuration comprises a quantity of bundled subframes;
when the UE does not correctly receive the downlink control signaling, determine the bundled subframe according to a physical hybrid automatic repeat request indicator channel (PHICH) used for instructing the UE to transmit the PUSCH and the subframe bundling configuration, wherein a receiving subframe of the PHICH is the lth subframe before the subframe n; and
cause the UE to transmit the PUSCH in the bundled subframe.