Uplink Grant Segmentation for Scheduling-Free Detection Accuracy
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Solution Overview
Problem
In the 5G communication system, there is a need to effectively indicate whether a scheduling-free transport block is correctly detected, as existing methods are inadequate in ensuring accurate detection and efficient resource utilization.
Innovation Solution
A method is provided where a transport block is sent to a communication device through a pre-configured period resource, and a correct response is received on a pre-configured correct response resource, allowing for accurate indication of transport block detection and reducing resource wastage by preventing unnecessary retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If scheduling-free data transmission is used to reduce delay and overhead, then transmission efficiency is improved, but the ability to accurately indicate transport block detection results deteriorates
Solution Approach 1:
The patent segments the response indication into multiple independent fields within the uplink grant: a first response indication field for HARQ-ACK and a second response indication field for scheduling-free transport block detection results. This segmentation allows each type of detection result to be indicated independently and accurately, resolving the contradiction by maintaining precision while preserving the scheduling-free transmission efficiency.
Solution Approach 2:
The patent adds a new dimension to the response indication mechanism by introducing a second response indication field specifically for scheduling-free transport block detection. This dimensional expansion allows the system to convey additional detection information without affecting the existing scheduling-free transmission efficiency, thereby resolving the accuracy deterioration issue.
2Loss of time
If pre-configured period resources are used for scheduling-free transmission, then transmission delay is reduced, but resource utilization efficiency deteriorates due to unnecessary retransmissions
Solution Approach 1:
The patent implements a feedback mechanism where the base station sends uplink grants containing response indication fields that inform the terminal whether the scheduling-free transport block was correctly detected. This feedback allows the terminal to determine whether retransmission is necessary, preventing unnecessary retransmissions and improving resource utilization efficiency while maintaining the low-delay benefits of scheduling-free transmission.
Solution Approach 2:
The terminal autonomously determines whether to perform retransmission based on the response indication received in the uplink grant. This self-service approach allows the terminal to make intelligent decisions about resource usage, avoiding unnecessary retransmissions and improving overall resource utilization while maintaining the fast transmission characteristics of scheduling-free mode.
3Device complexity
If no response indication mechanism is implemented, then system complexity is reduced, but detection accuracy deteriorates
Solution Approach 1:
The patent extracts the response indication functionality from the general uplink grant structure by dedicating specific fields within the uplink grant to carry detection result information. This extraction approach adds minimal complexity to the system while providing accurate detection indication, as the response information is embedded within existing control channel resources rather than requiring separate dedicated channels.
Data Source
AI summary
Provided are a response receiving and sending method, a retransmission method, a communication device, and a storage medium. The method includes: sending a transport block to a first communication device through a pre-configured period resource, and receiving a correct response corresponding to the transport block on a pre-configured correct response resource.