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Feedback processing method and system of harq‑ack

A technology of feedback processing and feedback mode, which is applied in the field of communication and can solve problems such as large bit sequence size

Active Publication Date: 2017-07-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The main purpose of the present invention is to provide a HARQ-ACK feedback processing scheme to solve the situation in the related art that the size of the binding window is 1, and the size of the HARQ-ACK bit sequence sent by the UE is larger than the actual feedback required by the base station. question

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  • Feedback processing method and system of harq‑ack
  • Feedback processing method and system of harq‑ack

Examples

Experimental program
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Embodiment 1

[0054] The embodiment of the present invention discloses a HARQ-ACK feedback processing method, which can be used in an LTE-ATDD system, image 3 is a flowchart of a HARQ-ACK feedback processing method according to an embodiment of the present invention, such as image 3 As shown, the method includes:

[0055] Step S302, when the UE is configured with multiple serving cells, the uplink and downlink subframe configuration is 1 or 6, and the binding window size is 1, the base station sends DCI format 0 and / or 4 to the UE, wherein DCI format 0 and / or Or the two-bit DAI information in 4 is used to indicate the downlink scheduling situation of the current subframe;

[0056] In step S304, the UE determines the HARQ-ACK bit sequence fed back on the PUSCH and / or determines the number of REs occupied by the HARQ-ACK bit sequence according to the DAI information.

[0057] In this embodiment, the base station notifies the UE of the downlink scheduling situation, and the UE determines t...

Embodiment 2

[0103] This embodiment is applicable to the case where the downlink transmission modes of the primary serving cell and the secondary serving cell are both dual-codeword stream transmission modes. In this case, the following method is used to determine the HARQ-ACK bit sequence fed back on the PUSCH and / or the HARQ-ACK bit sequence fed back on the PUSCH The number of REs occupied by the ACK bit sequence.

[0104] Such as Figure 4 As shown, when the above two-bit downlink allocation indication information is A, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 4, and the bit sequence is in, corresponding to the HARQ-ACK response message of the primary serving cell, Corresponding to the HARQ-ACK response message of the secondary serving cell; the UE uses O=4 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH.

[0105] Such as Figure 5 As shown, when the above two-bit downlink allocation indic...

Embodiment 3

[0109] This embodiment is applicable to the case where the downlink transmission modes of the primary serving cell and the secondary serving cell are both single-codeword stream transmission modes. In this case, the following method is used to determine the HARQ-ACK bit sequence fed back on the PUSCH and / or the HARQ-ACK bit sequence fed back on the PUSCH The number of REs occupied by the ACK bit sequence.

[0110] Such as Figure 8 As shown, when the above two-bit downlink allocation indication information is A, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 2, and the bit sequence is in, corresponding to the HARQ-ACK response message of the primary serving cell, Corresponding to the HARQ-ACK response message of the secondary serving cell; the UE uses O=2 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH.

[0111] Such as Figure 9 As shown, when the above two-bit downlink allocation ind...

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Abstract

Disclosed are a HARQ-ACK feedback processing method and system. The method comprises: when a UE is configured with multiple serving cells, one or six uplink and downlink sub-frames are configured, and a size of a bundling window is 1, a base station sending a DCI format 0 and / or 4 to the UE, two-bit downlink allocation indication (DAI) information in the DCI format 0 and / or 4 being used to indicate a downlink scheduling condition of a current sub-frame; and the UE determining, according to the DAI information, an HARQ-ACK bit sequence fed back on a PUSCH and / or determining the number of REs occupied by the HARQ-ACK bit sequence. The present invention achieves the effect that the size and occupied resource units of a HARQ-ACK bit sequence sent by a UE meet the actual requirements.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a hybrid automatic repeat acknowledgment (HARQ Acknowledgment, HARQ-ACK for short) feedback processing method and system. Background technique [0002] In a Hybrid Automatic Repeat Request (HARQ for short) mode, the codeword sent by the sender can not only detect errors, but also have certain error correction capabilities. After the decoder at the receiving end receives the codeword, it first checks the error situation, and if it is within the error correction capability of the codeword, it will automatically correct the error; if there are many errors and exceeds the error correction capability of the codeword, it can still be detected When an error occurs, the receiving end sends a decision signal to the sending end through the feedback channel, requiring the sending end to resend the information. In an Orthogonal Frequency Division Multiplex (OFDM for short) system, a HARQ ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16
CPCH04L1/1896H04W88/02
Inventor 戴博梁春丽张禹强
Owner ZTE CORP
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