Dynamic Waveform Selection for Wireless Downlink Efficiency
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Solution Overview
Problem
Wireless communication networks face interference and congestion due to increasing demand for mobile broadband access, leading to degraded performance on both downlink and uplink transmissions, especially as more user equipment (UEs) access long-range wireless networks and short-range systems are deployed in communities.
Innovation Solution
User equipment (UEs) and base stations communicate to select and use multiple waveforms and decoders for downlink wireless communication, with UEs transmitting indications of supported waveforms and power consumption to base stations, which then select the most power-efficient and performance-optimal waveform or decoder for use, based on received indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple waveforms and decoders are supported for downlink communication, then spectral efficiency and data rates are improved, but device complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic waveform and decoder selection where the UE can indicate support for multiple waveforms (e.g., CP-OFDM, DFT-s-OFDM) and the network can select different waveforms based on current channel conditions, traffic type, and UE capabilities. This dynamic adaptation allows the system to optimize spectral efficiency for different scenarios while managing device complexity through selective activation rather than simultaneous operation of all waveform processors.
Solution Approach 2:
The patent changes the operational parameters of the communication system by introducing multiple waveform options and allowing the UE to indicate which waveforms it supports. The network then selects appropriate waveforms and decoders based on channel conditions, UE power consumption indications, and performance requirements, thereby optimizing spectral efficiency without permanently increasing device complexity.
2Productivity
If multiple waveforms and decoders are supported for downlink communication, then data rates and capacity are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic selection of waveforms and decoders based on current communication conditions. The UE can indicate power consumption associated with different waveform/decoder combinations, and the network selects the most power-efficient option that still meets the required data rate. This allows the system to achieve high data rates when needed while conserving power during normal operation, rather than continuously operating at maximum performance levels.
Solution Approach 2:
The patent introduces power consumption as a selectable parameter for different waveform and decoder configurations. By allowing the UE to indicate which waveforms it supports and their associated power consumption characteristics, the system can optimize the balance between data rate performance and power consumption based on current conditions, such as UE battery status and channel quality.
3Use of energy by moving object
If waveform selection is optimized for power efficiency, then power consumption is reduced, but may limit adaptability to different channel conditions
Solution Approach 1:
The patent implements a dynamic waveform selection mechanism where the UE indicates support for multiple waveforms (e.g., CP-OFDM for high data rates in good channels, DFT-s-OFDM for lower power consumption or specific channel conditions). The network can then adaptively select the most appropriate waveform based on real-time channel conditions, UE power consumption indications, and performance requirements, thereby maintaining both power efficiency and adaptability.
Solution Approach 2:
The patent makes the UE multi-functional by enabling support for multiple waveform types and decoder configurations. The UE can indicate which waveforms it supports and their associated characteristics, allowing the network to select from multiple options to match different channel conditions and performance requirements. This universality ensures the system can adapt to various scenarios while managing power consumption through selective operation rather than continuous maximum-performance operation.
Data Source
AI summary
Wireless communication techniques for supporting, selecting, and using multiple waveforms and/or multiple decoders for downlink wireless communication are discussed. A UE may transmit to a base station a request to use a first waveform during a first time period for downlink wireless communication. The UE may receive from the base station a response to the request that includes an indication of a selected waveform to use during the first time period for the downlink wireless communication.