US-12627427-B2 - Method for HARQ transmission

Abstract

This document generally relates to transmitting a feedback message from a first node to a second node, where the message indicates both a detection result of receiving at least a portion of a transport block, and addition information that indicates to the second node how to set one or more parameters for a subsequent transmission. In various embodiments, the message includes a value, such as an M-bit binary value that indicates both the detection result and the additional information.

Inventors

• Chulong LIANG
• Jin Xu
• Liguang LI
• Qiang Fu
• Jian Kang

Assignees

• ZTE CORPORATION

Dates

Publication Date

20260512

Application Date

20220630

Claims (20)

1. 1 . A method for wireless communication, comprising: receiving, with a first node, at least one portion of a first transport block from a second node; and transmitting, with the first node, a message to the second node, the message comprising a value that indicates both a detection result of receiving the at least one portion of the first transport block, and additional information indicating to the second node how to set one or more parameters for a subsequent transmission to the first node, wherein the detection result indicates acknowledgement information regarding receipt of the at least one portion by the first node, wherein the value comprises an M-bit binary value where M is selected from among a plurality of values for M by the first node or the second node, wherein each of the plurality of values of M corresponds to a respective one of a plurality of message type sets, wherein each of the plurality of message type sets comprises at least one of a plurality of message types comprising a detection state information type, a transmission resource type, or an error rate type, and wherein each of the plurality of message type sets comprises a different one or a different combination of two or more of the plurality of message types from other of the plurality of message type sets; and receiving, with the first node, at least one portion of a second transport block of the subsequent transmission that is transmitted according to a setting of the one or more parameters performed by the second node for the subsequent transmission.
2. 2 . A method of wireless communication, comprising: transmitting, with a second node, at least one portion of a first transport block to a first node; receiving, with the second node, a message from the first node, the message comprising a value that indicates both a detection result of receiving the at least one portion of the first transport block, and additional information indicating to the second node how to set one or more parameters for a subsequent transmission to the first node, wherein the detection result indicates acknowledgement information regarding receipt of the at least one portion by the first node, wherein the value comprises an M-bit binary value where M is selected from among a plurality of values for M by the first node or the second node, and wherein each of the plurality of values of M corresponds to a respective one of a plurality of message type sets, wherein each of the plurality of message type sets comprises at least one of a plurality of message types comprising a detection state information type, a transmission resource type, or an error rate type, and wherein each of the plurality of message type sets comprises a different one or a different combination of two or more of the plurality of message types from other of the plurality of message type sets; setting, with the second node, the one or more parameters based on the value in the message; and transmitting, with the second node, at least one portion of a second transport block of the subsequent transmission to the first node according to the setting.
3. 3 . The method of claim 2 , wherein the at least one portion of the first transport block and the at least one portion of the second transport block are a same at least one portion of a same transport block.
4. 4 . The method of claim 2 , wherein the at least one portion of the first transport block and the at least one portion of the second transport block are different portions of a same transport block.
5. 5 . The method of claim 2 , wherein the first transport block and the second transport block are different transport blocks.
6. 6 . The method of claim 2 , wherein the additional information comprises a detection state information value of the at least one portion of the first transport block.
7. 7 . The method of claim 2 , wherein the additional information comprises a relative value between a detection state information value of the at least one portion of the first transport block and an associated reference value.
8. 8 . The method of claim 7 , wherein the one or more parameters comprises one or more transmission resources for the subsequent transmission, and wherein the relative value indicates, to the second node, to increase or decrease one or more amounts of the one or more transmission resources for the subsequent transmission.
9. 9 . The method of claim 2 , wherein the additional information comprises a relative value between a first detection state information value of the at least one portion of the first transport block and a second detection state information value of a prior transmission.
10. 10 . The method of claim 6 , wherein the detection state information value depends on at least one of: one or more receive powers of the at least one portion of the first transport block, one or more input signal-to-noise ratios of a multiple antenna detector of the first node, one or more output signal-to-noise ratios of the multiple antenna detector, at least one output signal statistic of the multiple antenna detector, at least one input signal statistic of the multiple antenna detector, one or more input signal-to-noise ratios of a demodulator of the first node, one or more output signal-to-noise ratios of the demodulator, at least one output signal statistic of the demodulator, at least one input signal statistic of the demodulator, one or more input signal-to-noise ratios of a decoder of the first node, one or more output signal-to-noise ratios of the decoder, at least one output signal statistic of the decoder, or at least one input signal statistic of the decoder.
11. 11 . The method of claim 10 , wherein the detection state information value depends on: the at least one output signal statistic of the multiple antenna detector, the at least one input signal statistic of the multiple antenna detector, the at least one output signal statistic of the demodulator, the at least one input signal statistic of the demodulator, the at least one output signal statistic of the decoder and the at least one input signal statistic of the decoder, and wherein each of the at least one input signal statistic and the at least one output signal statistic of each of the multiple antenna detector, the demodulator, and the decoder comprises at least one of a respective a mean, a variance, a second-order moment, or at least one moment higher than the second-order moment.
12. 12 . The method of claim 2 , wherein the additional information comprises a transmission resource number.
13. 13 . The method of claim 2 , wherein the additional information comprises a relative value between a first transmission resource number for the subsequent transmission and a second transmission resource number of the at least one portion of the first transport block.
14. 14 . The method of claim 2 , wherein the additional information comprises a relative value between a first transmission resource number of the at least one portion of the first transport block and a second transmission resource number for a prior transmission.
15. 15 . The method of claim 2 , wherein the additional information comprises a relative value between a first transmission resource number for the subsequent transmission and a second transmission resource number of an earliest transmission of the at least one portion of the first transport block.
16. 16 . The method of claim 12 , wherein the transmission resource number depends on at least one of: a transmission bandwidth, a transmission duration, a number of resource blocks, a number of subcarriers, a number of resource elements, a number of modulation symbols, or a number of output bits of an encoder of the second node.
17. 17 . The method of claim 2 , wherein the additional information comprises an error rate of the at least one portion of the first transport block.
18. 18 . The method of claim 17 , wherein the error rate comprises at least one of a bit error rate or a transport block portion error rate.
19. 19 . The method of claim 18 , wherein the transport block portion error rate comprises a code block error rate.
20. 20 . A wireless communications apparatus comprising: a memory storing a plurality of instructions; and a processor configured to execute the plurality of instructions, and upon execution of the plurality of instructions, is configured to: transmit at least one portion of a first transport block to a first node; receive a message from the first node, the message comprising a value that indicates both a detection result of receiving the at least one portion of the first transport block, and additional information indicating to the wireless communications apparatus how to set one or more parameters for a subsequent transmission to the first node, wherein the detection result indicates acknowledgement information regarding receipt of the at least one portion by the first node, wherein the value comprises an M-bit binary value where M is selected from among a plurality of values for M by the first node or the wireless communications apparatus, and wherein each of the plurality of values of M corresponds to a respective one of a plurality of message type sets, wherein each of the plurality of message type sets comprises at least one of a plurality of message types comprising a detection state information type, a transmission resource type, or an error rate type, and wherein each of the plurality of message type sets comprises a different one or a different combination of two or more of the plurality of message types from other of the plurality of message type sets; set the one or more parameters based on the value in the message; and transmit at least one portion of a second transport block of the subsequent transmission to the first node according to the setting.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Patent Application No. PCT/CN2020/084138, filed Apr. 10, 2020. The contents of International Patent Application No. PCT/CN2020/084138 are herein incorporated by reference in their entirety. TECHNICAL FIELD This document is directed generally to configuring feedback messages for responding to transport blocks. BACKGROUND Hybrid automatic repeat request (HARQ) is a method for improving transmission efficiency in communication systems. This method can automatically adapt to the channel variation to increase transmission efficiency in a system. As a result, HARQ has been widely used in wireless communication systems. For many of such communication systems, only a single-bit of information is used for indicating transmission correctness in a HARQ process. For example, when a first node responds to a second node upon receipt of a packet from the second node, the single-bit is used to indicate a receive state, including either a positive acknowledgment (ACK) or a negative acknowledgement (NACK) of the packet. However, for complicated and varying communication channels, single-bit feedback conveys limited messaging on the receive state, which in turn may lower the transmission rate. With increasing demand on communications, cellular systems are facing more and more complicated communication environments. In the New Radio (NR) access technology of the 3rd Generation Partnership Project (3GPP), i.e., the 5th generation cellular system, a new type of transmission method called code block group (CBG) transmission is used for increasing transmission efficiency. CBG transmission is a mechanism for supporting multi-bit HARQ feedback information. For example, to transmit a transport block, a second node may divide the transport block of N code blocks of M CBGs, and send the M CBGs to a first node. In turn, the first node feeds back M-bits of information, with each of the M bits corresponding to one of the M CBGs. In addition, along with the transport block, the second node needs M bits to indicate which CBG is sent for reducing resource usage in retransmissions. However, current CBG methods have drawbacks, including: CBG is only valid when large amounts of information are transmitted, the control overhead of CBG is large, and though CBG may reduce retransmission resources compared to the single-bit method, CBG does not offer reliability improvement for subsequent transmissions. As a result, current CBG methods are unable to meet ultra-reliable low-latency communication (URLLC) requirements. As such, ways to improve feedback messaging in wireless communications that enhances flexibility, reliability, and efficiency of subsequent transmissions may be desirable. SUMMARY This document relates to methods, systems, and devices for generation and communication of feedback messages for wireless communication. In some implementations, a method for wireless communication is disclosed. The method includes: receiving, with a first node, at least one portion of a transport block from a second node; and transmitting, with the first node, a message to the second node, the message comprising a value that indicates both a detection result of receiving the at least one portion of the transport block, and additional information indicating to the second node how to set one or more parameters for a subsequent transmission to the first node. In some other implementations, a method of wireless communication is disclosed. The method includes: transmitting, with a second node, at least one portion of a first transport block to a first node; receiving, with the second node, a message from the first node, the message comprising a value that indicates both a detection result of receiving the at least one portion of the transport block, and additional information indicating to the second node how to set one or more parameters for a subsequent transmission to the first node; setting, with the second node, the one or more parameters based on the value in the message; and transmitting, with the second node, at least one portion of a second transport block of the subsequent transmission to the first node according to the setting. In some other implementations, a device, such as a network device, is disclosed. The device may include one or more processors and one or more memories, wherein the one or more processors are configured to read computer code from the one or more memories to implement any one of the methods above. In yet some other implementations, a computer program product is disclosed. The computer program product may include a non-transitory computer-readable program medium with computer code stored thereupon, the computer code, when executed by one or more processors, causing the one or more processors to implement any one of the methods above. The above and other aspects and their implementations are described in greater detail in the drawings, the de