Method and apparatus for determining a hybrid automatic repeat request-acknowledge codebook in mobile communications

By receiving and analyzing the parameters of downlink control information, the user equipment determines the hybrid automatic repeat request-acknowledgment codebook, which solves the problem of insufficient efficiency of traditional codebooks in multi-carrier and multi-cell scenarios, and achieves more efficient data transmission reliability.

CN122122835APending Publication Date: 2026-05-29MEDIATEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MEDIATEK INC
Filing Date
2024-10-24
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In newly developed mobile communication networks, the traditional hybrid automatic repeat request-acknowledgment codebook is inefficient or lacks flexibility, making it difficult to meet the needs of multi-carrier and multi-cell scenarios.

Method used

By receiving downlink control information, including parameters of the physical downlink control channel and the physical downlink shared channel, the user equipment can determine the hybrid automatic repeat request-acknowledgment codebook and send it to the network node so that the network node can track the transmission status and lost channels.

Benefits of technology

It improves the efficiency and flexibility of the hybrid automatic repeat request-acknowledgment codebook, enabling more accurate feedback on data transmission status and ensuring the reliability of data transmission.

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Abstract

Various solutions for a device determining a hybrid automatic repeat request-acknowledgment (HARQ-ACK) codebook in mobile communications are described. The device can receive downlink control information (DCI). The downlink control information can include a physical downlink control channel (PDCCH) parameter indicating a count of one or more transmitted physical downlink control channels and a physical downlink shared channel (PDSCH) parameter indicating a count of one or more allocated physical downlink shared channels. The device can determine a hybrid automatic repeat request-acknowledgment codebook corresponding to the one or more allocated physical downlink shared channels based on the physical downlink control channel parameter and the physical downlink shared channel parameter. The device can transmit the hybrid automatic repeat request-acknowledgment codebook.
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