Method and apparatus for improving ACK/NACK bundling
AssigneeInnovative Sonic Limited
InventorKo-Chiang Lin
Life of this patent
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Abstract
A method for improving ACK/NACK bundling in a user equipment (UE) of a wireless communication system is disclosed. The method includes steps of receiving an uplink grant allocated to an uplink sub-frame, the sub-frame being utilized for transmitting an HARQ feedback corresponding to a plurality of downlink sub-frame, a TDD UL/DL configuration of the UE being set to 0; and determining whether the UE misses any downlink assignment is missing according to a downlink assignment index (DAI) carried in a latest received Physical Downlink Control Channel (PDCCH) for downlink assignment.
Claims16
A method for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the method comprising:
- receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) sub-frame;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 0, determining whether the UE misses any downlink assignment according to a downlink assignment index (DAI) carried in latest received Physical Downlink Control Channel (PDCCH) signaling for downlink assignment;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 1-6, determining whether the UE misses any downlink assignment according to a DAI carried in a received PDCCH signaling for the uplink grant;
- and
- transmitting the HARQ (Hybrid Automatic Repeat Request) feedback based on the determination whether the UE misses any downlink assignment.
A communication device for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the communication device comprising:
- a control circuit;
- a processor installed in the control circuit;
- a memory installed in the control circuit and coupled to the processor;
- wherein the processor is configured to execute a program code stored in the memory for improving ACK/NACK bundling by:
- receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) sub-frame;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 0, determining whether the UE misses any downlink assignment according to a downlink assignment index (DAI) carried in a latest received Physical Downlink Control Channel (PDCCH) signaling for downlink assignment;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 1-6, determining whether the UE misses any downlink assignment according to a DAI carried in a received PDCCH signaling for the uplink grant;
- and
- transmitting the HARQ (Hybrid Automatic Repeat Request) feedback based on the determination whether the UE misses any downlink assignment.
A method for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the method comprising:
- receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) sub-frame;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 0, determining the number of downlink sub-frames generating the HARQ feedback within the downlink sub-frames according to the number of PDSCH (Physical Downlink Shared Channel) transmissions detected by the UE within the downlink sub-frame;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 1-6, determining the number of assigned subframes according to a downlink assignment index (DAI) carried in a received Physical Downlink Control Channel (PDCCH) signaling for the uplink grant;
- and
- transmitting the HARQ (Hybrid Automatic Repeat Request) feedback based on the determination of the number of downlink sub-frames generating the HARQ feedback.
A communication device for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the communication device comprising:
- a control circuit;
- a processor installed in the control circuit;
- a memory installed in the control circuit and coupled to the processor;
- wherein the processor is configured to execute a program code stored in the memory for improving ACK/NACK bundling by:
- receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) subframe;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 0, determining the number of downlink sub-frame generating the HARQ feedback within the downlink sub frame according to the number of PDSCH (Physical Downlink Shared Channel) transmissions detected by the UE within the downlink sub-frame;
- if a time division duplex (TDD) UL/DL configuration of the UE is set to 1-6, determining the number of assigned subframes according to a downlink assignment index (DAI) carried in a received Physical Downlink Control Channel (PDCCH) signaling for the uplink grant;
- and
- transmitting the HARQ (Hybrid Automatic Repeat Request) based on the determination of the number of downlink sub-frame, generating the HARQ feedback.
A method for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the method comprising:
- receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) sub-frame;
- determining whether a PDCCH (Physical Downlink Control Channel) carrying the uplink grant has a downlink assignment index (DAI);
- if the uplink grant has a downlink assignment index (DAI), determining whether the UE misses any downlink assignment and the number of assigned subframes according to the DAI of PDCCH carrying the uplink grant;
- if the uplink grant does not have a downlink assignment index (DAI), determining whether the UE misses any downlink assignment according to a downlink assignment index (DAI) carried in a latest received Physical Downlink Control Channel (PDCCH) signaling for downlink assignment and determining the number of assigned subframes according to the number of PDSCH (Physical Downlink Shared Channel) transmissions detected by the UE within the downlink sub-frame;
- and
- transmitting the HARQ (Hybrid Automatic Repeat Request) feedback based on the determination whether the UE misses any downlink assignment.
A communication device for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the communication device comprising:
- a control circuit;
- a processor installed in the control circuit;
- a memory installed in the control circuit and coupled to the processor;
- wherein the processor is configured to execute a program code stored in the memory for improving ACK/NACK bundling by:
- receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) sub-frame;
- determining whether a PDCCH (Physical Downlink Control Channel) carrying the uplink grant has a downlink assignment index (DAI);
- if the uplink grant has a downlink assignment index (DAI), determining whether the UE misses any downlink assignment and the number of assigned subframes according to the DAI of PDCCH carrying the uplink grant;
- if the uplink grant does not have a downlink assignment index (DAI), determining whether the UE misses any downlink assignment according to a downlink assignment index (DAI) carried in a latest received Physical Downlink Control Channel (PDCCH) signaling for downlink assignment and determining the number of assigned subframes according to the number of PDSCH (Physical Downlink Shared Channel) transmissions detected by the UE within the downlink sub-frame;
- and
- transmitting the HARQ (Hybrid Automatic Repeat Request) feedback based on the determination whether the UE misses any downlink assignment.
Dependencies are inferred from the claim text.