Multi-Modal Data Transmission Using Spaced Subcarriers for Reliability
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Solution Overview
Problem
Current data transmission methods for multi-modal services, which include data types such as video and haptic data, suffer from significant block interference in the frequency domain, leading to low data transmission reliability.
Innovation Solution
Distribute data with different reliability requirements on subcarriers that are spaced at intervals within a transmission block RB, using varying modulation and coding schemes to optimize transmission for each data type, and map haptic data to subcarriers corresponding to demodulation reference signals to reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data with different reliability requirements are transmitted on contiguous subcarriers, then resource utilization is high, but block interference in frequency domain increases and transmission reliability decreases
Solution Approach 1:
The patent segments the frequency domain resources by distributing data with different reliability requirements on non-contiguous subcarriers. Specifically, first data and second data are mapped to different subcarrier sets within the same resource block, creating frequency-domain separation that reduces block interference while maintaining resource utilization efficiency.
Solution Approach 2:
The patent applies local quality by assigning different modulation and coding schemes to different subcarrier locations based on the reliability requirements of the transmitted data. First data with higher reliability requirements uses more robust modulation and coding on specific subcarriers, while second data uses less robust schemes on other subcarriers, optimizing transmission performance for each data type.
2Reliability
If uniform modulation and coding schemes are used for all data types, then system complexity is low, but transmission reliability for critical data is insufficient
Solution Approach 1:
The patent implements local quality by configuring different modulation and coding schemes for different data types transmitted on different subcarriers. The network device sends indication information specifying the modulation and coding parameters for first data and second data, allowing critical data to receive enhanced protection while non-critical data uses standard schemes, thereby improving overall reliability without excessive complexity.
3Reliability
If data are mapped to subcarriers corresponding to demodulation reference signals, then interference is reduced and reliability improves, but resource availability for data transmission decreases
Solution Approach 1:
The patent segments the available subcarriers into different sets for different purposes. Some subcarriers are allocated for data transmission while others are reserved or avoided near demodulation reference signal locations. This segmentation reduces interference between data and reference signals, improving demodulation accuracy and transmission reliability while maintaining sufficient resource availability through efficient allocation of remaining subcarriers.
Data Source
AI summary
A multi-modal service data transmission method and apparatus are provided. The multi-modal service data transmission method includes: receiving first indication information; determining a first resource and a second resource based on the first indication information; receiving first data on the first resource; and receiving second data on the second resource. The first resource and the second resource are located in a same resource block (RB). The first resource includes at least two subcarriers that are spaced in frequency domain, and/or the second resource includes at least two subcarriers that are spaced in frequency domain. According to the foregoing method, data transmission reliability can be improved.