5G Uplink Waveform Selection via Network-Assisted Filtering
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Solution Overview
Problem
5G wireless communication systems face challenges in selecting optimal radio waveforms for uplink communications, requiring high spectral efficiency, low latency, and limited complexity, while managing different numerologies and interference mitigation across sub-bands.
Innovation Solution
The system facilitates network-assisted and UE-based waveform selection, allowing for dynamic configuration of filtering schemes such as wideband, time domain windowing, or sub-band filtering based on current network conditions, using multi-carrier waveforms like OFDM, F-OFDM, and UFMC, to optimize waveform parameters and numerologies for each sub-band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple numerologies and waveform filtering schemes are deployed to handle diverse 5G requirements, then spectral efficiency and system adaptability are improved, but device complexity and waveform selection difficulty increase
Solution Approach 1:
The patent implements dynamic waveform selection where the network device determines and signals the waveform filtering scheme (wideband, time domain windowing, or sub-band filtering) based on current network conditions and UE requirements. This allows the system to adapt to different 5G use cases (eMBB, MTC, URLLC) while managing complexity through centralized network control rather than distributed UE decisions
Solution Approach 2:
The patent changes waveform parameters dynamically by selecting different filtering schemes (wideband, time domain windowing, sub-band filtering) and numerologies based on network conditions. The network device determines appropriate waveform parameters and signals them to the UE, enabling the system to optimize spectral efficiency and latency for different traffic types without requiring the UE to independently evaluate multiple waveform options
2Productivity
If dynamic waveform filtering schemes are applied to optimize spectral efficiency, then data throughput is improved, but processing latency and complexity increase
Solution Approach 1:
The network device determines the waveform filtering scheme in advance based on network conditions and UE capabilities, then signals this decision to the UE before data transmission begins. This preliminary waveform selection eliminates the need for real-time waveform evaluation during data transmission, reducing processing latency while maintaining high spectral efficiency through optimized waveform choices
Solution Approach 2:
The system implements feedback mechanisms where the network device monitors network conditions and UE performance, then adjusts waveform filtering scheme selections accordingly. This allows the system to maintain optimal spectral efficiency across varying conditions without requiring complex real-time waveform reprocessing at the UE
3Object-affected harmful factors
If sub-band filtering is used to mitigate interference between numerologies, then interference leakage is reduced, but device complexity and computational requirements increase
Solution Approach 1:
The patent applies sub-band filtering that divides the frequency spectrum into separate sub-bands, each with its own filtering characteristics optimized for specific numerologies. This segmentation approach mitigates interference leakage between different numerologies by isolating them in frequency domains while keeping the filtering complexity manageable through structured sub-band organization rather than full-band complex filtering
4Productivity
If network-assisted waveform selection is implemented to optimize system performance, then spectral efficiency and latency are improved, but signaling overhead and network complexity increase
Solution Approach 1:
The network device performs multiple functions through the waveform selection signaling mechanism: it determines waveform filtering schemes, selects appropriate numerologies, and provides UE configuration all through integrated RRC signaling. This multi-functionality approach reduces overall signaling overhead compared to separate signaling for each parameter, while maintaining system efficiency through centralized optimization
Data Source
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AI summary
The disclosed subject matter relates to facilitating uplink communication waveform selection in wireless communication systems, and more particularly Fifth Generation (5G) wireless communication systems. In one or more embodiments, a system is provided comprising a processor and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations. These operations can comprise facilitating establishing a wireless communication link between a first device and a second network device of a wireless communication network, and determining a waveform filtering protocol for application by the first device in association with performance of uplink data transmissions from the first device to the second network device.