Grant-Free Resource Selection for 5G Uplink Feedback
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Solution Overview
Problem
Current 5G mobile communication technologies face challenges in defining grant-free resources for uplink data transmission, particularly in scenarios like eMBB, mMTC, and URLLC, leading to inefficiencies and increased power consumption due to lack of effective feedback mechanisms.
Innovation Solution
The method involves selecting a grant-free resource as K continuous time slots of a frequency band for data packet transmission and using terminal-device-specific signals for feedback, allowing for successful decoding confirmation without demodulation and decoding processes, thereby reducing power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional feedback mechanisms are used for data packet transmission confirmation, then decoding accuracy can be verified, but terminal devices must perform demodulation and decoding processes which increase power consumption
Solution Approach 1:
The patent extracts only the essential feedback information (ACK/NACK) from the complex demodulation and decoding processes. Instead of requiring full signal processing, the terminal device sends simplified feedback indicators that confirm whether data packet transmission was successful, eliminating the need for power-intensive demodulation and decoding while maintaining transmission reliability
Solution Approach 2:
The patent inverts the traditional feedback approach by using reference signals for feedback transmission instead of using data signals. The base station sends reference signals that terminal devices can detect to determine transmission status, reversing the conventional direction and method of feedback communication to reduce processing requirements and power consumption
2Productivity
If grant-free resources are allocated for uplink data transmission in 5G scenarios, then transmission efficiency is improved, but resource definition and management become complex
Solution Approach 1:
The patent segments the uplink transmission resources into distinct grant-free resource sets for different terminal devices and service types. Each terminal device is assigned specific time-frequency resources within these sets, allowing efficient parallel transmission while simplifying resource management through structured partitioning of the available spectrum and time slots
Solution Approach 2:
The patent creates universal grant-free resource sets that can serve multiple terminal devices and different 5G scenarios (eMBB, mMTC, URLLC) simultaneously. These resource sets are designed to be multi-functional, supporting various transmission types and service requirements without requiring separate dedicated resources for each scenario, thereby reducing overall system complexity
3Adaptability or versatility
If multiple terminal devices share the same grant-free resource set, then resource utilization is improved, but resource collision and interference increase
Solution Approach 1:
The patent applies local quality by assigning different terminal devices to different subsets or portions of the grant-free resource sets based on their specific requirements, locations, or service types. This localized allocation within the shared resource framework reduces collision probability while maintaining overall resource sharing benefits, as each device uses resources optimized for its specific context
Data Source
AI summary
Provided are a data transmitting and feedback method and apparatus, a device and a storage medium. The data transmitting method includes: selecting a grant-free resource to send a data packet, where the grant-free resource is K continuous time slots of one frequency band, where the K is an integer greater than 0.