HARQ sequences in wireless networks

Patent metadata

Field	Value
Publication number	US-12323254-B2
Application number	US-202217581735-A
Country	US
Kind code	B2
Filing date	Jan 21, 2022
Priority date	Apr 23, 2019
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

This disclosure provides systems, methods and apparatuses for data retransmissions in a wireless network. In some implementations, a wireless communication device may transmit a first data unit to a receiving device, may receive a first hybrid automatic repeat request (HARQ) feedback frame indicating that a portion of the first data unit was not successfully decoded by the receiving device, may retransmit the indicated portion of the first data unit to the receiving device in response to the first HARQ feedback frame, and may transmit a second data unit, different than the first data unit, to the receiving device concurrently with the retransmission of the indicated portion of the first data unit.

First claim

What is claimed is:

1. A method for wireless communication by a wireless communication device, comprising:
receiving, from a transmitting device, a first physical-layer protocol data unit (PPDU) including a number of codewords representing a number of first medium access control (MAC) protocol data units (MPDUs);
comparing a first decoding quality of the received codewords with a second decoding quality of the first MPDUs, wherein the first decoding quality of the received codewords is associated with a physical layer of the wireless communication device, and wherein the second decoding quality of the first MPDUs is associated with a MAC layer of the wireless communication device; and
selecting, responsive to comparing the first decoding quality associated with the physical layer with the second decoding quality associated with the MAC layer, one of a hybrid automatic repeat request (HARQ) sequence or an automatic repeat request (ARQ) sequence as feedback, the selected HARQ sequence or the selected ARQ sequence indicating whether or not portions of the first PPDU were successfully decoded by the wireless communication device.

2. The method of claim 1 , further comprising:
transmitting a first HARQ feedback frame to the transmitting device, the first HARQ feedback frame indicating that one or more codewords or groups of codewords of the first PPDU were not successfully decoded by the wireless communication device responsive to selecting the HARQ sequence as the feedback.

3. The method of claim 2 , wherein the first HARQ feedback frame includes:
a codeword-based bitmap indicating the one or more codewords that were not successfully decoded by the wireless communication device; and
an MPDU-based bitmap indicating one or more MPDUs that were not successfully decoded by the wireless communication device.

4. The method of claim 2 , further comprising:
receiving, from the transmitting device, a retransmission of the one or more indicated codewords or groups of codewords of the first PPDU responsive to the first HARQ feedback frame concurrently with receiving a second PPDU from the transmitting device, wherein the second PPDU is different than the first PPDU.

5. The method of claim 4 , wherein the one or more indicated codewords or groups of codewords of the first PPDU are received on first wireless resources, and the second PPDU is received on second wireless resources that are different than the first wireless resources.

6. The method of claim 5 , further comprising:
transmitting a second HARQ feedback frame to the transmitting device, the second HARQ feedback frame indicating that one or more codewords or groups of codewords of the second PPDU were not successfully decoded by the wireless communication device; and
receiving, from the transmitting device, a retransmission of the one or more indicated codewords or groups of codewords of the second PPDU responsive to the second HARQ feedback frame concurrently with receiving a third PPDU from the transmitting device, wherein the third PPDU is different than the second PPDU.

7. The method of claim 1 , further comprising:
transmitting a block acknowledgement (BA) frame to the transmitting device, the BA frame indicating that one or more of the first MPDUs of the first PPDU were not successfully decoded by the wireless communication device responsive to selecting the ARQ sequence as the feedback.

8. A wireless communication device comprising:
at least one processor; and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to:
receive, from a transmitting device, a first physical-layer protocol data unit (PPDU) including a number of codewords representing a number of first medium access control (MAC) protocol data units (MPDUs);
compare a first decoding quality of the received codewords with a second decoding quality of the first MPDUs, wherein the first decoding quality of the received codewords is associated with a physical layer of the wireless communication device, and wherein the second decoding quality of the first MPDUs is associated with a MAC layer of the wireless communication device; and
select, responsive to comparison of the first decoding quality associated with the physical layer with the second decoding quality associated with the MAC layer, one of a hybrid automatic repeat request (HARQ) sequence or an automatic repeat request (ARQ) sequence as feedback, the selected HARQ sequence or the selected ARQ sequence indicating whether or not portions of the first PPDU were successfully decoded by the wireless communication device.

9. The wireless communication device of claim 8 , wherein execution of the processor-readable code is further configured to:
transmit a first HARQ feedback frame to the transmitting device, the first HARQ feedback frame indicating that one or more codewords or groups of codewords of the first PPDU were not successfully decoded by the wireless communication device responsive to selecting the HARQ sequence as the feedback.

10. The wireless communication device of claim 9 , wherein the first HARQ feedback frame includes:
a codeword-based bitmap indicating the one or more codewords that were not successfully decoded; and
an MPDU-based bitmap indicating one or more MPDUs that were not successfully decoded.

11. The wireless communication device of claim 9 , wherein execution of the processor-readable code is further configured to:
receive, from the transmitting device, a retransmission of the one or more indicated codewords or groups of codewords of the first PPDU responsive to the first HARQ feedback frame concurrently with receiving a second PPDU from the transmitting device, wherein the second PPDU is different than the first PPDU.

12. The wireless communication device of claim 11 , wherein the one or more indicated codewords or groups of codewords of the first PPDU are received on first wireless resources, and the second PPDU is received on second wireless resources that are different than the first wireless resources.

13. The wireless communication device of claim 12 , wherein the first wireless resources include one or more first resource units (RU), and the second wireless resources include one or more second RUs that are different than the one or more first RUs.

14. The wireless communication device of claim 12 , wherein the first wireless resources include a first set of spatial streams, and the second wireless resources include a second set of spatial streams that are different than the first set of spatial streams.

15. The wireless communication device of claim 11 , wherein execution of the processor-readable code is further configured to:
transmit a second HARQ feedback frame to the transmitting device, the second HARQ feedback frame indicating that one or more codewords or groups of codewords of the second PPDU were not successfully decoded by the wireless communication device; and
receive, from the transmitting device, a retransmission of the one or more indicated codewords or groups of codewords of the second PPDU concurrently with receiving a third PPDU from the transmitting device, wherein the third PPDU is different than the second PPDU.

16. The wireless communication device of claim 8 , wherein execution of the processor-readable code is further configured to:
transmit a block acknowledgement (BA) frame to the transmitting device, the BA frame indicating that one or more of the first MPDUs of the first PPDU were not successfully decoded by the wireless communicati

Assignees

• Qualcomm Inc

Inventors

• Chen Jialing Li
• Shellhammer Stephen Jay
• Asterjadhi Alfred
• Doan Dung Ngoc
• Tian Bin
• Kim Youhan

Classifications

• H04L1/0057

  Block codes (H04L1/0061, H04L1/0064 take precedence) · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L1/1864

  ARQ related signaling (H04L1/1607 takes precedence) · CPC title

• H04W28/04

  Error control · CPC title

• H04L1/1819 Primary

  with retransmission of additional or different redundancy · CPC title