Small Data Transmission Time-Domain Resource Positioning
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Solution Overview
Problem
Existing communication technologies face challenges in efficiently determining the time-domain resource transmission position for small data transmission (SDT) in wireless communication systems, particularly in identifying the optimal beam direction and repetition transmission occasions.
Innovation Solution
The method involves a terminal device performing synchronization signal and PBCH block (SSB) measurements to determine a target SSB index corresponding to a target beam direction, and then determining a target repetition transmission occasion (TO) based on this index. The terminal device then performs SDT according to the target repetition TO, which corresponds to an N-th repetition in the SDT, where N is a positive integer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If small data transmission is performed in inactive state without optimized beam direction determination, then transmission can be performed quickly, but time-frequency resources are wasted and spectral efficiency is poor
Solution Approach 1:
The terminal performs SSB measurements and determines the target SSB index before performing SDT. This preliminary beam direction determination ensures that subsequent data transmission occurs on the optimal beam, improving spectral efficiency without delaying the transmission process. The target repetition TO is also determined in advance based on the target SSB index.
2Reliability
If multiple repetition transmissions are performed without optimized resource allocation, then transmission reliability is improved, but time-frequency resource consumption increases
Solution Approach 1:
The patent changes the parameter of transmission occasion selection by determining the target repetition TO based on the target SSB index. This parameter optimization ensures that repetition transmissions occur at the most efficient time-frequency positions, maintaining reliability while reducing overall resource consumption. The N-th repetition is specifically targeted to optimize resource usage.
3Ease of operation
If beam direction is not optimized for SDT, then transmission setup is simpler, but spectral efficiency deteriorates
Solution Approach 1:
The patent uses the existing SSB measurement mechanism, which is already universally performed for beam management, to simultaneously determine the target SSB index for SDT. This multi-functional use of the SSB measurement process maintains operational simplicity while achieving optimized beam direction and improved spectral efficiency for small data transmissions.
Data Source
AI summary
A method for determining a time-domain resource transmission position is performed by a terminal device. The method includes: performing a synchronization signal and PBCH block (SSB) measurement to determine a target SSB index; determining a target repetition transmission occasion (TO) according to the target SSB index; and performing small data transmission (SDT) according to the target repetition TO, wherein the target repetition TO corresponds to an N-th repetition in the SDT, and N is a positive integer.