Method, apparatus, and system for transmitting a HARQ-ACK codebook in a wireless communication system.

By optimizing HARQ-ACK codebook transmission through modified K1 sets and time-domain bundling, the method enhances signal efficiency and reduces latency in 3GPP NR systems, addressing resource limitations and latency challenges in advanced communication systems.

JP7873880B2Active Publication Date: 2026-06-15WILUS INSTITUTE OF STANDARDS & TECHNOLOGY INC
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Patent Information

Application Number
JP2024189108
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-05-20
Filing Date
2024-10-28
Publication Date
2026-06-15
Estimated Expiration
2042-03-31

AI Technical Summary

Technical Problem

The existing 3GPP LTE(-A) communication systems face inefficiencies in signal transmission and decoding due to resource limitations and long decoding times for PDCCH, which are exacerbated by the need for advanced 5G technologies to support lower latency and higher data rates, particularly in ultra-high frequency bands.

Method used

The proposed method involves optimizing the transmission and reception of HARQ-ACK codebooks by using a modified K1 set for PDSCH-to-HARQ slot timing, incorporating a union of K sets based on TDRA table entries, and applying the same subcarrier spacing for PDCCH and HARQ-ACK codebooks, with time-domain bundling to enhance efficiency.

Benefits of technology

This approach enables more efficient signal transmission and reception in wireless communication systems, particularly in 3GPP NR systems, by reducing latency and improving resource utilization, thus addressing the challenges of high-frequency band propagation and increasing data throughput.

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Abstract

To provide a method and apparatus for efficiently transmitting and receiving signals in a wireless communication system.SOLUTION: The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus therefor, the method comprising the steps of: receiving a PDCCH for multi-slot scheduling; determining a PDSCH candidate for each slot on the basis of information in the PDCCH; and transmitting a semi-static HARQ-ACK codebook on the basis of the determined PDSCH candidate of each slot.SELECTED DRAWING: Figure 20
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Citation Information

Patent Citations

  • Method, apparatus and system for transmitting HARQ-ACK codebook in wireless communication system

    JP2025010269A

  • Base station

    WO2020017056A1