HARQ-ACK Codebook Feedback Using Subcodebooks for Multi-Channel Scheduling
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Solution Overview
Problem
Existing communication systems lack an effective solution for HARQ-ACK codebook feedback in scenarios where multiple physical channels are scheduled using a single piece of control information, particularly in high-frequency bands like FRX (52.6 GHz to 71 GHz).
Innovation Solution
A method for HARQ-ACK codebook feedback is provided, allowing a device to send a HARQ-ACK codebook corresponding to multiple physical channels scheduled by a single control information format, using a feedback resource that includes subcodebooks with varying numbers of bits for different types of feedback information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one piece of control information schedules multiple physical channels, then scheduling efficiency is improved, but codebook feedback complexity increases
Solution Approach 1:
The patent divides the HARQ-ACK codebook into multiple subcodebooks, where each subcodebook corresponds to a specific physical channel or channel group. This segmentation allows the terminal device to generate and feedback different subcodebooks separately, reducing the complexity of handling a single large codebook while maintaining the efficiency of scheduling multiple channels through one control information
Solution Approach 2:
The patent introduces a new dimension for codebook organization by creating subcodebooks with different bit lengths corresponding to different physical channel types. This dimensional change in codebook structure enables more flexible and efficient feedback mechanisms, resolving the complexity issue while preserving scheduling efficiency
2Productivity
If subcodebooks with varying bits are used for different feedback information, then feedback efficiency is improved, but codebook structure complexity increases
Solution Approach 1:
The patent applies local quality by assigning different bit lengths to different subcodebooks based on the specific feedback requirements of each physical channel type. Each subcodebook is optimized locally with appropriate bit allocation, improving overall feedback efficiency while the modular structure manages complexity through localized optimization rather than uniform design
3Reliability
If HARQ-ACK codebook feedback is implemented for multiple physical channels, then communication reliability is improved, but processing requirements on terminal devices increase
Solution Approach 1:
By segmenting the codebook feedback into multiple subcodebooks, the processing burden on terminal devices is divided into smaller, more manageable tasks. Each subcodebook can be generated and transmitted independently, reducing the overall processing complexity while maintaining comprehensive HARQ-ACK feedback for multiple physical channels, thus preserving communication reliability
Data Source
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AI summary
The present application discloses a method, apparatus and device for feeding back a codebook, and a storage medium, and relates to the technical field of communications. The method is executed by a first device, and the method comprises: receiving first control information sent by a second device, the first control information scheduling the transmission by at least one physical channel, the first control information corresponding to a first control information format on a first cell, the maximum number of transmissions by physical channels scheduled by the first control information format on the first cell not being less than two, the at least one physical channel transmitting a corresponding HARQ-ACK codebook, and the HARQ-ACK codebook corresponding to a first feedback resource; and sending the HARQ-ACK codebook on the first feedback resource. In the embodiments of the present application, provided is a method for feeding back a codebook for a scheduling means of newly introduced control information scheduling a plurality of physical channels.