Terminal Feedback Acknowledge Multiplexing in Single Slot
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Solution Overview
Problem
Current methods in the New Radio (NR) system do not provide a solution for a terminal device to multiplex and transmit multiple pieces of feedback acknowledge information in a single slot, limiting the ability to efficiently handle multiple feedbacks simultaneously.
Innovation Solution
The solution involves using downlink control information with a first information field indicating the timing of feedback acknowledge information and a second information field providing a downlink assignment index, allowing the terminal device to determine the maximum bit number of feedback acknowledge information to be transmitted in a target transmission unit, enabling simultaneous transmission of multiple feedbacks in one slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal device transmits feedback acknowledge information corresponding to one PDSCH in one slot according to the current NR system method, then the transmission process is simple and clear, but the terminal device cannot multiplex and transmit multiple pieces of feedback acknowledge information in one slot, limiting the efficiency of handling multiple feedbacks simultaneously
Solution Approach 1:
The patent segments feedback acknowledgment information into multiple independent pieces, each associated with a specific PDSCH and identified by a unique feedback acknowledgment index. This allows the terminal device to separately manage and multiplex multiple feedback pieces within a single slot, resolving the contradiction between transmission efficiency and multiplexing capability.
Solution Approach 2:
The patent introduces a new dimension for feedback multiplexing by utilizing multiple physical uplink channels (PUCCH and PUSCH) and time-frequency resources. By mapping different feedback pieces to different channels and resource elements, the system enables simultaneous transmission of multiple feedbacks without increasing processing complexity at the terminal.
2Adaptability or versatility
If the access network device dynamically indicates HARQ timing for each PDSCH, then the timing flexibility is improved, but there is no solution for how the terminal device multiplexes and transmits multiple pieces of feedback acknowledge information in one slot
Solution Approach 1:
The patent applies preliminary action by pre-configuring feedback acknowledgment indexes and associated timing information in downlink control information (DCI). The terminal device uses these pre-indicated indexes to automatically determine the multiplexing pattern and transmission timing for multiple feedback pieces, eliminating the need for complex real-time multiplexing decisions and maintaining ease of operation despite enhanced adaptability.
3Loss of information
If multiple feedback acknowledge information need to be transmitted in one slot, then the feedback information completeness is improved, but the current method lacks the capability to handle multiple feedbacks simultaneously in one slot
Solution Approach 1:
The patent merges multiple feedback acknowledgment information pieces into a single transmission opportunity by allocating them to the same uplink slot with distinct resource elements or channel structures. This combining approach ensures all feedback information is transmitted together in one slot, improving both information completeness and simultaneous transmission capability without requiring separate transmissions for each feedback piece.
Data Source
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AI summary
Provided in the embodiments of the present invention are a transmission method, apparatus and system for feedback acknowledge information, relating to the technical field of communications. The method comprises: receiving by a terminal device downlink control information sent by an access network device, the downlink control information comprising a first information field and a second information field, wherein the first information field is used for indicating a timing relationship of a feedback acknowledge information corresponding to the downlink control information and the second information field is used to indicate a downlink allocation index; and determining, according to the first information field and the second information field, the number of first bits of the feedback acknowledge information transmitted in a target transmission unit. In the embodiments of the present invention, the terminal device determines, according to the first information field and the second information field indicated by the access network device, the maximum number of bits of a feedback acknowledge information transmitted in the target transmission unit, so that the terminal device can simultaneously feed multiple pieces of feedback acknowledge information back to the access network device in one target transmission unit according to the maximum number of bits.