Multi-layer Modulated Streams for Wireless Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless communication techniques using MIMO are limited in data transmission rates and efficiency, particularly in achieving higher redundancy and adaptability in multi-layer modulated streams.
Innovation Solution
A wireless device splits data streams into sub-streams, maps them to multiple layers, encodes, rate matches, modulates, and scrambles them before combining, applying pseudorandom sequences and phase rotations, and synchronizes layers for transmission, enabling flexible mapping configurations and increased redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional MIMO techniques are used for data transmission, then the system maintains simplicity in implementation, but the data transmission rate and efficiency are limited
Solution Approach 1:
The patent segments a single data stream into multiple data sub-streams, which are then mapped to multiple layers for parallel transmission. This segmentation enables higher data transmission rates by utilizing multiple spatial layers simultaneously while maintaining manageable complexity through systematic processing of each sub-stream
Solution Approach 2:
The patent introduces a new dimension to MIMO transmission by implementing multi-layer modulated streams with configurable layer mappings. This dimensional expansion allows data to be transmitted across multiple layers with different mapping configurations (one-to-one, one-to-many, many-to-one), thereby increasing transmission efficiency without proportionally increasing system complexity
2Reliability
If data streams are mapped to multiple layers with configurable mappings, then redundancy and adaptability are improved, but the complexity of mapping configurations increases
Solution Approach 1:
The patent implements dynamic and flexible mapping configurations that can be adapted to different transmission conditions. The system supports configurable layer mappings (one-to-one, one-to-many, many-to-one) that can be dynamically selected based on channel conditions, enabling improved reliability through redundancy while managing complexity through adaptive configuration rather than fixed complex structures
Solution Approach 2:
The patent changes key parameters such as the number of layers, mapping configurations, and redundancy levels to optimize transmission reliability. By allowing these parameters to be configured and adjusted, the system achieves higher redundancy and adaptability without requiring a permanently complex mapping structure, as the complexity can be scaled according to needs
3Reliability
If pseudorandom scrambling sequences are applied to each layer, then orthogonality between layers is achieved, but the processing complexity increases
Solution Approach 1:
The patent applies pseudorandom scrambling sequences to each layer as a preliminary processing step before transmission. This preliminary action ensures orthogonality between layers is established in advance, which simplifies the reception and separation process. The scrambling is performed systematically on each layer, achieving reliable orthogonality while managing complexity through a standardized preprocessing approach
4Productivity
If data streams are split into sub-streams and mapped to multiple layers, then transmission efficiency is improved, but the processing time and synchronization requirements increase
Solution Approach 1:
The patent segments data streams into sub-streams that are processed and transmitted in parallel across multiple layers. This segmentation enables simultaneous processing of multiple data portions, which improves overall transmission efficiency. The systematic segmentation approach manages processing time by distributing work across parallel channels rather than sequential processing
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Methods, systems, and devices for wireless communications are described. A wireless device may divide a data stream into multiple data sub-streams. The wireless device may map the data sub-streams to a set of layers of a multi-layer modulated stream. The wireless device may encode, rate match, modulate, spread and scramble the set of layers before combining them into a combined data stream. The number of layers in the set of layers may be configurable. The wireless device may apply scrambling sequences to the layers. An additional phase rotation or power scaling factor may be applied to each layer. The layers may then be synchronized and combined into a combined data stream. A set of combined data streams may be mapped to multiple-input, multiple-output (MIMO) layers. The wireless device may precode the MIMO layers, map the MIMO layers to tones, and transmit the combined data streams.