Configured Grant Feedback for Unused Transmission Occasion Reallocation
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Solution Overview
Problem
In wireless communication systems, especially for XR services, data frames are transmitted in a semi-persistent scheduling manner, leading to unused transmission occasions, which results in wasted resources due to inefficient resource allocation.
Innovation Solution
A communication method where a terminal notifies an access network device of unused transmission occasions, allowing the access network device to allocate these resources to other terminals, optimizing resource utilization by reducing signaling overheads and enhancing flexibility through implicit configuration of transmission occasions and time periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-persistent scheduling is used for data frame transmission, then transmission reliability is improved, but resource utilization deteriorates due to unused transmission occasions
Solution Approach 1:
The terminal device feeds back information about unused transmission occasions to the access network device. This feedback mechanism enables the network to identify and reallocate wasted resources, resolving the contradiction between maintaining transmission reliability through semi-persistent scheduling and improving resource utilization by eliminating unused transmission occasions.
2Productivity
If multiple transmission occasions are configured for data frame transmission, then transmission capacity is improved, but resource waste increases due to unused occasions
Solution Approach 1:
The terminal device reports unused transmission occasions back to the access network device, enabling the network to reallocate these resources to other users or purposes. This feedback mechanism maintains the configured transmission capacity while eliminating resource waste from unused occasions.
3Manufacturing precision
If configuration information is provided for each transmission occasion and time period, then allocation precision is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts and reports only the essential information about unused transmission occasions (occasion indices and time period identifiers) rather than providing complete configuration information for each occasion. This selective extraction maintains allocation precision while significantly reducing signaling overhead.
Solution Approach 2:
Instead of the access network device configuring each transmission occasion individually (which creates high signaling overhead), the terminal device autonomously identifies unused occasions and reports them back. This inverted approach maintains precision in resource allocation while minimizing signaling requirements.
Data Source
AI summary
A configured grant-based communication method and apparatus are provided. The method includes: An access network device sends configuration information to a terminal, where the configuration information is used to configure a first configured grant (CG) transmission occasion that carries indication information and a first time period in which the indication information functions; and the terminal then sends the indication information on the first transmission occasion based on the configuration information, where the indication information indicates a used or unused CG transmission occasion in the first time period.