HARQ Transmission With Selective Feedback for Power-Saving Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power saving signals in 5G NR protocols result in inefficient use of uplink control resources due to unnecessary HARQ feedback during inactive periods, leading to power wastage and resource overhead.
Innovation Solution
A method and apparatus for Hybrid Automatic Repeat Request (HARQ) transmission that dynamically adjusts HARQ feedback modes based on the presence of power saving signals, allowing terminals to optimize HARQ feedback by configuring a target codebook and selecting appropriate PUCCH resources, thereby reducing unnecessary HARQ feedback and conserving uplink control resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals continuously monitor PDCCH and send HARQ feedback for power saving signals, then reliability of power saving signal reception is improved, but uplink control resource overhead and power consumption increase
Solution Approach 1:
The patent extracts the HARQ feedback requirement specifically for power saving signals, separating it from general data transmission feedback. By identifying that power saving signals do not require HARQ feedback while data signals do, the system removes unnecessary feedback transmissions, reducing uplink control resource overhead and power consumption while maintaining reliable power saving signal reception through alternative acknowledgment mechanisms.
Solution Approach 2:
The patent implements dynamic adjustment of HARQ feedback behavior based on signal type detection. The terminal dynamically determines whether to send HARQ feedback by identifying whether the received signal is a power saving signal or data signal, thereby adaptively optimizing resource usage and power consumption according to the specific communication scenario.
2Reliability
If terminals send HARQ feedback for all received signals including power saving signals, then communication reliability is improved, but uplink control resource efficiency deteriorates
Solution Approach 1:
The patent introduces a selective feedback mechanism where the terminal provides differential HARQ feedback based on signal type. For power saving signals, the terminal uses implicit acknowledgment or no feedback, while for data signals, full HARQ feedback is maintained. This differentiated feedback approach ensures communication reliability for critical data while improving uplink control resource efficiency by eliminating redundant feedback for power saving signals.
Data Source
AI summary
A method of hybrid automatic repeat request (HARQ) transmission includes: determining a target signal requiring a HARQ feedback; and feeding back an HARQ result corresponding to the target signal in a preset first HARQ feedback mode, in response to determining that the target signal contains a power saving signal.