MIMO Spatial Resource Allocation for SC-FDMA Uplink
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Solution Overview
Problem
In Multiple-Input Multiple-Output (MIMO) wireless communication systems, existing methods face challenges in efficiently allocating resources for transmitting uplink signals, particularly in optimizing the use of spatial resources across SC-FDMA symbols to enhance data transfer rates and reliability.
Innovation Solution
The method involves allocating spatial resources to transport blocks in a MIMO wireless communication system by assigning specific frequency resources to SC-FDMA symbols, allowing for flexible shifting of resources as the number of symbols increases, thereby optimizing resource utilization across multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial resources are allocated to multiple transport blocks in MIMO uplink transmission, then data transfer rate is improved, but resource allocation complexity increases
Solution Approach 1:
The patent segments spatial resources into distinct sets for different transport blocks, with each transport block assigned specific spatial resources corresponding to SC-FDMA symbols. This segmentation allows multiple transport blocks to be transmitted simultaneously over different spatial paths, improving data transfer rate while managing complexity through structured resource division
Solution Approach 2:
The patent implements dynamic spatial resource allocation where the assignment of spatial resources to transport blocks can be adjusted based on channel conditions, traffic requirements, and system state. This dynamic approach enables flexible adaptation to varying conditions, optimizing throughput while maintaining manageable allocation complexity through standardized procedures
2Reliability
If spatial resources are allocated to multiple transport blocks, then transmission reliability is improved, but resource management complexity increases
Solution Approach 1:
The patent divides spatial resources into separate sets for different transport blocks, enabling diversified transmission paths. This segmentation provides transmission diversity, improving reliability by ensuring that if one spatial path experiences fading or interference, other paths can maintain successful transmission
Solution Approach 2:
The patent changes spatial resource allocation parameters dynamically, adjusting which spatial resources are assigned to which transport blocks based on channel conditions and system requirements. This parameter adjustment enables optimized reliability-performance tradeoffs while maintaining systematic resource management
3Productivity
If spatial resources are flexibly shifted across SC-FDMA symbols, then resource utilization is optimized, but allocation procedure complexity increases
Solution Approach 1:
The patent implements flexible shifting of spatial resources across SC-FDMA symbols, allowing spatial resource assignments to change dynamically from one symbol to another. This dynamic shifting optimizes resource utilization by adapting to time-varying channel conditions and traffic patterns while maintaining systematic allocation procedures
Solution Approach 2:
The patent employs periodic patterns in spatial resource allocation across SC-FDMA symbols, where spatial resources are assigned in systematic periodic intervals. This periodic approach simplifies the allocation procedure by establishing predictable patterns that reduce computational complexity while maintaining high resource utilization efficiency
Data Source
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AI summary
A method of allocating resources for transmitting a signal in a Multiple-Input Multiple-Output (MIMO) wireless communication system is disclosed. The method includes allocating one or more spatial resources of a plurality of spatial resources corresponding to first Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols to a first transport block, allocating one or more other spatial resources of the plurality of spatial resources corresponding to the first SC-FDMA symbols to a second transport block, and allocating spatial resources corresponding to second SC-FDMA symbols to the first transport block and the second transport block.