Wireless Communication Node HARQ-ACK Timing Across Active BWP Changes
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Solution Overview
Problem
The challenge of efficiently processing Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) feedback in wireless communication systems, particularly in scenarios involving network energy saving enhancements, has not been adequately addressed, leading to inefficiencies and increased energy consumption.
Innovation Solution
A method for wireless communication that involves sending and receiving HARQ-ACK bit blocks on a Physical Uplink Control Channel (PUCCH) within a specified slot, where the timing is determined by a chronological order relative to a frequency band resource change in an active Bandwidth Part (BWP), optimizing HARQ-ACK feedback efficiency and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network energy saving enhancement is implemented with denser layout and more antennas, then transmission data rates are improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring of HARQ-ACK feedback instead of continuous monitoring, allowing the base station to enter low-power states between monitoring periods. This reduces energy consumption while maintaining adequate transmission performance through periodic updates of the HARQ-ACK bit block.
Solution Approach 2:
The patent extracts only the essential HARQ-ACK feedback information that is truly necessary for maintaining transmission performance, rather than processing all possible feedback data. By selectively monitoring only critical feedback bits, the system reduces processing energy while preserving transmission data rate.
2Productivity
If HARQ-ACK feedback processing is enhanced for network energy saving, then feedback efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the HARQ-ACK feedback processing into distinct stages: generation at the terminal, transmission through PUCCH, and selective monitoring at the base station. Each segment operates independently with simplified logic, reducing overall system complexity while improving feedback efficiency through specialized processing at each stage.
3Adaptability or versatility
If frequency band resource changes are implemented in active BWP, then resource utilization is improved, but HARQ-ACK feedback timing becomes complex
Solution Approach 1:
The patent establishes predetermined timing relationships between frequency band resource changes and HARQ-ACK feedback transmission. By pre-defining the timing offset and association rules before actual transmission occurs, the system handles dynamic resource allocation without introducing complex real-time timing calculations.
Data Source
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AI summary
The present application discloses a method and device for a node used for wireless communication. A first receiver receives first signaling; and a first transmitter sends a first PUCCH in a first time slot, wherein the first PUCCH carries a target HARQ-ACK bit block; the first signaling is used for determining the first time slot; a first change occasion comprises the time occupied by one first type configuration change, the first type configuration change comprises the change in frequency band resources, and the first type configuration change occurs in the same activated BWP; the target HARQ-ACK bit block depends on the chronological order among the first time slot, a target time slot, and the first change occasion, and the target time slot is a downlink time slot.