Granted Patent B2

US 12,425,170 · App. 18/098,341 · Granted Sep 23, 2025

Inventors: Xing Liu (Shenzhen, CN); Peng Hao (Shenzhen, CN); Xingguang Wei (Shenzhen, CN); Jing Shi (Shenzhen, CN)

Assignee: ZTE Corporation

H04L5/0055H04W72/232

Abstract

Claims (72)

1. A wireless communication method, comprising:

receiving, by a wireless communication device from a base station, at least one of (1) first scheduling indicators and (2) second scheduling indicators, wherein each of the first scheduling indicators schedules a transmission, and each of the second scheduling indicators schedules two or more transmissions;

generating, by the wireless communication device, at least one of a first sub-codebook and a second sub-codebook, wherein

the first sub-codebook comprising one or more first feedback bits indicative of reception status of the transmission scheduled by each of the first scheduling indicators; and

the second sub-codebook comprising second feedback bits indicative of reception status of the two or more transmissions scheduled by each of the second scheduling indicators; and

generating, by the wireless communication device, a codebook by combining the first sub-codebook and the second sub-codebook.

2. The wireless communication method of claim 1 , wherein

each of the first scheduling indicators comprises a first index identifying a bit in the first sub-codebook that corresponds to the reception status of the transmission scheduled by each of the first scheduling indicators;

each of the second scheduling indicators comprises a second index identifying bits in the second sub-codebook that corresponds to the reception status of the two or more transmissions scheduled by each of the second scheduling indicators; and

the first indexes of the first scheduling indicators are counted independently from the second indexes of the second scheduling indicators.

3. The wireless communication method of claim 2 , wherein

each of the first scheduling indicators and the second scheduling indicators is in Downlink Control Information (DCI);

the transmission is a Physical Downlink Shared Channel (PDSCH) with which the wireless communication device receives downlink data from the base station; and

each of the first indexes and the second indexes is a Downlink Assignment Index (DAI).

4. The wireless communication method of claim 3 , wherein

the DAI in each of the second scheduling indicators comprises a Counter DAI (C-DAI) and a Total DAI (T-DAI); and

each count of the C-DAI or the T-DAI corresponds to a number of bits in the second sub-codebook, the number of bits is based on a number of the two or more transmissions scheduled by each of the second scheduling indicators.

5. The wireless communication method of claim 4 , wherein

the C-DAI for each of the second scheduling indicators is determined based on a carrier index of each of the one of the two or more transmissions; and

the second feedback bits are arranged according to the C-DAI for each of the second scheduling indicators.

6. The wireless communication method of claim 5 , wherein

the one of the two or more transmissions is the transmission on a carrier with a lower carrier index than any other one of the two or more transmissions; or

the one of the two or more transmissions is the transmission on a carrier with a higher carrier index than any other one of the two or more transmissions.

7. The wireless communication method of claim 4 , wherein

the C-DAI for each of the second scheduling indicators is determined based on a carrier index of each of the second scheduling indicators; and

the second feedback bits are arranged according to the C-DAI for each of the second scheduling indicators.

8. The wireless communication method of claim 1 , wherein the second feedback bits corresponding to the two or more transmissions scheduled by the second scheduling indicator are continuous in the codebook.

9. The wireless communication method of claim 1 , wherein

the first sub-codebook comprises at least one of two first sub-codebooks, a first one of the first sub-codebooks comprising feedback bits corresponding to a first type of transmission scheduled by a first one of the first scheduling indicators, the first type comprises Code Block Group (CBG), and a second one of the first sub-codebooks comprising feedback bits corresponding to a second type of transmission scheduled by a second one of the first scheduling indicators, the second type comprises Transmission Block (TB); and

the second sub-codebook comprises at least one of two second sub-codebooks, a first one of the second sub-codebooks comprising feedback bits corresponding to the first type of transmission scheduled by a first one of the second scheduling indicators, and a second one of the second sub-codebooks comprising feedback bits corresponding to the second type of transmission scheduled by a second one of the second scheduling indicators.

10. The wireless communication method of claim 9 , wherein generating the codebook comprises combining the first sub-codebook and the second sub-codebook by bit cascading the first sub-codebooks and the second sub-codebooks according to the first type of transmission, the second type of transmission, the first scheduling indicators, and the second scheduling indicators.

11. The wireless communication method of claim 1 , wherein

the first sub-codebook comprises at least one of two first sub-codebooks, a first one of the first sub-codebooks comprising feedback bits corresponding to a first type of transmission scheduled by a first one of the first scheduling indicators, the first type comprises Code Block Group (CBG), and a second one of the first sub-codebooks comprising feedback bits corresponding to a second type of transmission scheduled by a second one of the first scheduling indicators, the second type comprises Transmission Block (TB); and

the second sub-codebook comprises at least one of three second sub-codebooks, a first one of the second sub-codebooks comprising feedback bits corresponding to the first type of transmission scheduled by a first one of the second scheduling indicators, a second one of the second sub-codebooks comprising feedback bits corresponding to the second type of transmission scheduled by a second one of the second scheduling indicators, and a third one of the second sub-codebooks comprising feedback bits corresponding to the first type and the second type of transmission scheduled by a third one of the second scheduling indicators.

12. The wireless communication method of claim 11 , wherein generating the codebook comprises combining the first sub-codebook and the second sub-codebook by bit cascading the first sub-codebooks and the second sub-codebooks according to the first type of transmission, the second type of transmission, the first scheduling indicators, and the second scheduling indicators.

13. A wireless communication device, comprising:

at least one processor configured to:

receive, via a receiver from a base station, at least one of (1) first scheduling indicators and (2) second scheduling indicators, wherein each of the first scheduling indicators schedules a transmission, and each of the second scheduling indicators schedules two or more transmissions;

generate at least one of a first sub-codebook and a second sub-codebook, wherein

the first sub-codebook comprising one or more first feedback bits indicative of reception status of the transmission scheduled by each of the first scheduling indicators; and

the second sub-codebook comprising second feedback bits indicative of reception status of the two or more transmissions scheduled by each of the second scheduling indicators; and

generate a codebook by combining the first sub-codebook and the second sub-codebook.

14. Abase station, comprising:

at least one processor configured to:

transmit, via a transceiver to a wireless communication device, at least one of (1) first scheduling indicators and (2) second scheduling indicators, wherein each of the first scheduling indicators schedules a transmission, and each of the second scheduling indicators schedules two or more transmissions;

receive, via the transceiver from the wireless communication device, a codebook generated based on at least one of a first sub-codebook and a second sub-codebook, wherein

the first sub-codebook comprising first feedback bits indicative of reception status of the transmission scheduled by each of the first scheduling indicators; and

the second sub-codebook comprising second feedback bits indicative of reception status of the two or more transmissions scheduled by each of the second scheduling indicators; and

determine, based on the codebook, the reception status of the transmission scheduled by each of the first scheduling indicators and the reception status of the two or more transmissions scheduled by each of the second scheduling indicators.

15. A wireless communication method, comprising:

transmitting, by a base station to a wireless communication device, at least one of (1) first scheduling indicators and (2) second scheduling indicators, wherein each of the first scheduling indicators schedules a transmission, and each of the second scheduling indicators schedules two or more transmissions;

receiving, by the base station from the wireless communication device, a codebook generated based on at least one of a first sub-codebook and a second sub-codebook, wherein

the first sub-codebook comprising first feedback bits indicative of reception status of the transmission scheduled by each of the first scheduling indicators; and

the second sub-codebook comprising second feedback bits indicative of reception status of the two or more transmissions scheduled by each of the second scheduling indicators; and

determining, by the base station based on the codebook, the reception status of the transmission scheduled by each of the first scheduling indicators and the reception status of the two or more transmissions scheduled by each of the second scheduling indicators.

16. The wireless communication method of claim 15 , wherein

each of the first scheduling indicators comprises a first index identifying a bit in the first sub-codebook that corresponds to the reception status of the transmission scheduled by each of the first scheduling indicators;

each of the second scheduling indicators comprises a second index identifying bits in the second sub-codebook that corresponds to the reception status of the two or more transmissions scheduled by each of the second scheduling indicators; and

the first indexes of the first scheduling indicators are counted independently from the second indexes of the second scheduling indicators.

17. The wireless communication method of claim 16 , wherein

each of the first scheduling indicators and the second scheduling indicators is in Downlink Control Information (DCI);

the transmission is a Physical Downlink Shared Channel (PDSCH) with which the wireless communication device receives downlink data from the base station; and

each of the first indexes and the second indexes is a Downlink Assignment Index (DAI).

18. The wireless communication method of claim 17 , wherein

the DAI in each of the second scheduling indicators comprises a Counter DAI (C-DAI) and a Total DAI (T-DAI); and

each count of the C-DAI or the T-DAI corresponds to a number of bits in the second sub-codebook, the number of bits is based on a number of the two or more transmissions scheduled by each of the second scheduling indicators.

19. The wireless communication method of claim 18 , wherein

the C-DAI for each of the second scheduling indicators is determined based on a carrier index of each of the one of the two or more transmissions; and

the second feedback bits are arranged according to the C-DAI for each of the second scheduling indicators.

20. The wireless communication method of claim 19 , wherein

the one of the two or more transmissions is the transmission on a carrier with a lower carrier index than any other one of the two or more transmissions; or

the one of the two or more transmissions is the transmission on a carrier with a higher carrier index than any other one of the two or more transmissions.

Assignments (1)

Continuity (2)

References Cited (14)