MIMO Resource Allocation via Vector Symbol Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional resource allocation solutions for wireless communication systems fail to optimally allocate transmission resources between control information and user data when using MIMO techniques, leading to increased complexity and overhead, especially in LTE systems where control signaling and user data share transmission resources.
Innovation Solution
The solution involves separating control information and user data into distinct vector symbols for time multiplexing, allowing for efficient allocation of transmission resources without significant additional control overhead, and enabling the reuse of conventional uplink processing modules by implementing per-layer processing and specific mapping techniques to ensure consistent control information transmission across multiple layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO transmission techniques are used to transmit data on multiple layers simultaneously, then data throughput is significantly increased, but the complexity of managing radio channels and allocating transmission resources between control information and user data increases greatly
Solution Approach 1:
The patent segments control information and user data into separate vector symbols for independent processing and allocation. This segmentation allows conventional single-layer processing modules to be reused for each layer independently, reducing the complexity of managing multi-layer MIMO transmissions while maintaining high throughput
2Productivity
If control signaling and user data are multiplexed for transmission over PUSCH, then transmission resources are shared efficiently, but conventional resource allocation solutions fail to provide optimal allocation when MIMO techniques are utilized
Solution Approach 1:
The patent extends conventional single-layer resource allocation to multi-layer MIMO by introducing a layer dimension. Control information and user data are allocated across multiple layers using layer-specific mapping rules, enabling optimal resource allocation in the additional spatial dimension provided by MIMO while maintaining compatibility with existing allocation frameworks
3Speed
If control information and user data are transmitted in parallel on multiple layers, then data rates are increased, but processing complexity and control overhead increase significantly
Solution Approach 1:
The patent segments control information and user data into separate vector symbols that can be processed independently. This segmentation enables parallel processing of control and data streams across multiple layers using conventional processing modules, increasing data rates while avoiding the processing complexity that would result from joint processing
Solution Approach 2:
The patent designs processing modules that can handle both control information and user data universally across multiple layers. By creating layer-agnostic processing components that work with segmented vector symbols, the system achieves multi-layer transmission capabilities without requiring separate complex processing chains for each layer
Data Source
Figure 1
Figure 2~3
Figure 4A~4C
AI summary
A method for wirelessly transmitting user data and at least a first type of control information using a plurality of transmission layers including encoding bits of a first type of control information to form one or more control codewords and encoding bits of user data to form one or more user data codewords. The method also includes generating a plurality of vector symbols based on the control codewords and the user data codewords. Each vector symbol includes a plurality of modulation symbols that are each associated with a transmission layer over which the associated modulation symbol will be transmitted. Generating the plurality of vector symbols includes interleaving bits of the one or more control codewords and bits of the one or more user data codewords so that the first type of control information is carried in modulation symbols associated with the same transmission layers in all the vector symbols transmitted during the subframe that carry the first type of control information. The method also includes transmitting the plurality of vector symbols to a receiver over a plurality of transmission layers.