Non-Orthogonal Data Transmission via Logic Resource Element Mapping
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Solution Overview
Problem
Current wireless communication technologies lack a scheme for resource mapping in non-orthogonal access modes, which limits the potential for improving spectrum efficiency and resource utilization in multiple-user communication systems.
Innovation Solution
A data transmission method and device that classify and encode data symbols for each user based on logic resource element groups determined by encoding matrices, and map these groups to physical resource blocks using various mapping modes, including time-domain and frequency-domain orders, and inter-group frequency-hopping treatments, to enable efficient resource mapping in non-orthogonal access systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If orthogonal multiple access techniques (FDMA, TDMA, CDMA, SDMA) are used to share wireless resources, then resource allocation is simple and reliable, but spectrum efficiency is limited and cannot exceed the inner bound of multiple user capacity
Solution Approach 1:
The patent segments the transmission process into distinct stages: data symbol generation, encoding with user-specific matrices, mapping to logic resource elements, and physical resource block allocation. This segmentation allows non-orthogonal multiplexing while maintaining manageable complexity through structured processing steps.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by using logic resource elements as an intermediate layer between data symbols and physical resource blocks. This additional mapping dimension enables non-orthogonal access patterns that transcend traditional time-frequency resource division, allowing multiple users to share the same physical resources through different logical mappings.
2Productivity
If non-orthogonal access techniques are used to improve spectrum efficiency, then multiple user capacity exceeds orthogonal mode limits, but resource mapping schemes are currently unavailable
Solution Approach 1:
The patent performs preliminary encoding of data symbols using user-specific encoding matrices before mapping to physical resources. This preliminary action establishes distinct logical resource element mappings for each user, enabling non-orthogonal multiplexing while simplifying the subsequent physical resource allocation process through pre-organized data structures.
Solution Approach 2:
The patent introduces logic resource elements as an intermediary layer between data symbols and physical resource blocks. This intermediary structure mediates the complex non-orthogonal mapping relationships, providing a structured intermediate representation that simplifies both transmission and reception processing while enabling flexible resource allocation.
3Productivity
If multiple users share identical physical resources through non-orthogonal coding, then resource utilization improves, but interference cancellation complexity increases at the receiving end
Solution Approach 1:
The patent segments the received signal processing into distinct cancellation stages corresponding to different users. By maintaining structured encoding matrices and logic resource element mappings for each user, the receiver can systematically cancel user signals in sequence, reducing the complexity of interference cancellation through organized processing steps rather than handling all users simultaneously.
Solution Approach 2:
The patent performs preliminary encoding with user-specific matrices at the transmitter, which creates structured signal representations that facilitate systematic interference cancellation at the receiver. This preliminary structuring of transmitted signals enables the receiver to efficiently identify and cancel user signals in a predetermined sequence, reducing overall processing complexity.
Data Source
AI summary
A data transmission method and a data transmission device are provided. A transmission device classifies data symbols for each scheduled user into groups based on logic resource element groups determined based on encoding matrices each multiplexed by multiple users, encodes respective groups of data symbols for each user in accordance with the encoding matrices to determine groups of encoded data symbols for each user, subjects respective groups of encoded data symbols for each user to a mapping treatment based on logic resource elements, maps respective logic resource element groups to a physical resource block in accordance with a mapping mode, and transmits data to a reception device based on the physical resource block.