Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets

• US 10,237,042 B2
• Filed: 04/24/2017
• Issued: 03/19/2019
• Est. Priority Date: 11/05/2008
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Fan, Xiaoan, Liu, Guang, Li, Bo, Hou, Yunzhe
• Primary Examiner(s): Mered, Habte
• Application Number:
  US15/494,549
• Publication Number:
  US 20170346613A1
• Time in Patent Office: 694 Days
• CPC Class Codes: H04L 1/1614 using bitmaps
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling

Abstract

The application relates to radio communications and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method includes receiving downlink data packets and an uplink data assignment indicator (UL DAI) from a base station, wherein a value of the UL DAI indicates a number (N) of all scheduled downlink sub-frames which scheduled by the base station for the user equipment, the number N is greater than 1, and a number k (k<N) of the downlink data packets is/are semi-persistent scheduling (SPS) data packets; forming a feedback signal comprising N acknowledgements/negative acknowledgements (ACKs/NAKs) acknowledging the N downlink data packets, k ACKs/NAKs of the k SPS data packets is/are placed from (N−k+1)th to Nth positions of the N ACKs/NAKs; and sending the feedback signal to the base station starting from the ACK/NAK at the first position.

Claims

1. A method for a user equipment device (UE) to feedback acknowledgement (ACK) information or negative acknowledgement (NAK) information, comprising:

receiving a quantity N of physical downlink shared channel (PDSCH) sub-frames that are scheduled by a base station for the UE, wherein the N scheduled PDSCH sub-frames include a quantity M dynamic scheduling sub-frame(s) and a quantity k semi-persistent scheduling (SPS) sub-frame(s), wherein N, M, and k are integers, 0<

k<

N, and M≤

N−

k; and

feeding back to the base station a sequence of N bits in response to the N PDSCH sub-frames, wherein the ACK information or the NAK information of the k SPS sub-frame(s) comprises k bits, and they are arranged in the (N−

k+1)^th to the N^th bit of the N-bit sequence.

2. The method according to claim 1, wherein k=1, and the last bit of the N-bit sequence is arranged to carry the ACK or NAK information of the SPS sub-frame.

3. The method according to claim 1, wherein the first bit to the M^th bit of the N-bit sequence is/are arranged to carry the ACK or NAK information of the M dynamic scheduling sub-frame(s).

4. The method according to claim 1, further comprising:

receiving an uplink data assignment indicator (UL DAI) from the base station, wherein the UL DAI indicates the quantity N of the scheduled PDSCH sub-frames.

5. The method according to claim 1, wherein an SPS sub-frame is a sub-frame that carries a data packet without a resource scheduling index, and a dynamic scheduling sub-frame is a sub-frame that carries a data packet with a resource scheduling index.

6. A user equipment device (UE), comprising:

a receiver, configured to receive a quantity N of physical downlink shared channel (PDSCH) sub-frames that are scheduled by a base station for the UE, wherein the N scheduled PDSCH sub-frames include a quantity M dynamic scheduling sub-frame(s) and a quantity k semi-persistent scheduling (SPS) sub-frame(s), wherein N, M, and k are integers, 0<

k<

N, and M≤

N−

k; and

a transmitter, configured to send the base station a sequence of N bits, wherein the N-bit sequence carries acknowledgement (ACK) information or negative acknowledgement (NAK) information in response to the N PDSCH sub-frames, and wherein the ACK information or the NAK information of the k SPS sub-frame(s) comprises k bits, and they are arranged in the (N−

k+1)^th to the N^th bit of the N-bit sequence.

7. The UE according to claim 6, wherein k=1, and the last bit of the N-bit sequence is arranged to carry the ACK or NAK information of the SPS sub-frame.

8. The UE according to claim 6, wherein the first bit to the M^th bit of the N-bit sequence is/are arranged to carry the ACK or NAK information of the M dynamic scheduling sub-frame(s).

9. The UE according to claim 6, wherein the receiver is further configured to receive an uplink data assignment indicator (UL DAI) from the base station, wherein the UL DAI indicates the quantity N of the scheduled PDSCH sub-frames.

10. The UE according to claim 6, wherein an SPS sub-frame is a sub-frame that carries a data packet without a resource scheduling index, and a dynamic scheduling sub-frame is a sub-frame that carries a data packet with a resource scheduling index.

11. A non-transitory storage medium storing a computer program thereon, the program, when executed by a processor of a computer, causing the computer to:

receive a quantity N of physical downlink shared channel (PDSCH) sub-frames that are scheduled by a base station for the UE, wherein the N scheduled PDSCH sub-frames include a quantity M dynamic scheduling sub-frame(s) and a quantity k semi-persistent scheduling (SPS) sub-frame(s), wherein N, M, and k are integers, 0<

k<

N, and M≤

N−

k; and

send the base station a sequence of N bits, wherein the N-bit sequence carries acknowledgement (ACK) information or negative acknowledgement (NAK) information in response to the N PDSCH sub-frames, and wherein the ACK information or the NAK information of the k SPS sub-frame(s) comprises k bits, and they are arranged in the (N−

k+1)^th to the N^th bit of the N-bit sequence.

12. The non-transitory storage medium according to claim 11, wherein k=1, and the last bit of the N-bit sequence is arranged to carry the ACK or NAK information of the SPS sub-frame.

13. The non-transitory storage medium according to claim 11, wherein the first bit to the M^th bit of the N-bit sequence is/are arranged to carry the ACK or NAK information of the M dynamic scheduling sub-frame(s).

14. The non-transitory storage medium according to claim 11, the program, when executed by the processor, further causing the computer to:

receive an uplink data assignment indicator (UL DAI) from the base station, wherein the UL DAI indicates the quantity N of the scheduled PDSCH sub-frames.

15. The non-transitory storage medium according to claim 11, wherein an SPS sub-frame is a sub-frame that carries a data packet without a resource scheduling index, and a dynamic scheduling sub-frame is a sub-frame that carries a data packet with a resource scheduling index.

16. An apparatus, comprising:

at least one processor; and

a memory coupled to the at least one processor;

wherein the at least one processor is configured to;

obtain a quantity N of physical downlink shared channel (PDSCH) sub-frames that are scheduled by a base station for a user equipment, wherein the N scheduled PDSCH sub-frames include a quantity M dynamic scheduling sub-frame(s) and a quantity k semi-persistent scheduling (SPS) sub-frame(s), wherein N, M, and k are integers, 0<

k<

N, and M≤

N−

k; and

provide a feedback sequence of N bits, wherein the N-bit sequence carries acknowledgement (ACK) information or negative acknowledgement (NAK) information in response to the N PDSCH sub-frames, and wherein the ACK information or the NAK information of the k SPS sub-frame(s) comprises k bits, and they are arranged in the (N−

k+1)^th to the N^th bit of the N-bit sequence.

17. The apparatus according to claim 16, wherein k=1, and the last bit of the N-bit sequence is arranged to carry the ACK or NAK information of the SPS sub-frame.

18. The apparatus according to claim 16, wherein the first bit to the M^th bit of the N-bit sequence is/are arranged to carry the ACK or NAK information of the M dynamic scheduling sub-frame(s).

19. The apparatus according to claim 16, wherein the at least one processor is further configured to obtain an uplink data assignment indicator (UL DAI) from the base station, wherein the UL DAI indicates the quantity N of the scheduled PDSCH sub-frames.

20. The apparatus according to claim 16, wherein an SPS sub-frame is a sub-frame that carries a data packet without a resource scheduling index, and a dynamic scheduling sub-frame is a sub-frame that carries a data packet with a resource scheduling index.