Selective Non-Linearity Correction for Wireless UE Power and Latency
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Solution Overview
Problem
Current wireless communication systems face challenges in reducing power consumption and latency due to the need for default non-linearity correction in user equipment (UE) for all downlink communications, which is not optimized based on the non-linearity level of network node transmit antennas.
Innovation Solution
The UE selectively performs non-linearity correction for downlink communications based on an indication of the non-linearity level received from the network node, comparing it with the channel noise level and error vector magnitude (EVM), thereby reducing unnecessary power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-linearity correction is performed for all downlink communications, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The system changes the operational parameters of non-linearity correction by introducing a non-linearity level indicator that allows the UE to dynamically adjust whether to apply non-linearity correction processing. When the indicated non-linearity level is below a threshold, the UE skips correction to save power; when above the threshold, correction is applied to ensure reliability.
Solution Approach 2:
The system makes the non-linearity correction process dynamic rather than static. The UE continuously monitors the non-linearity level indicator from the network and adaptively switches between performing and skipping non-linearity correction based on current channel conditions, optimizing the balance between reliability and power consumption in real-time.
2Reliability
If non-linearity correction is performed for all downlink communications, then communication reliability is improved, but latency increases
Solution Approach 1:
The system modifies the processing parameters by conditionally enabling or disabling non-linearity correction based on the non-linearity level indicator. This parameter change allows the UE to skip unnecessary correction processing when channel conditions are good, thereby reducing latency while maintaining reliability when needed.
Solution Approach 2:
The system implements dynamic control of non-linearity correction where the UE adjusts its processing behavior in real-time based on the indicated non-linearity level. This dynamic approach eliminates fixed processing delays by only applying correction when the non-linearity level warrants it, thus reducing overall latency.
3Use of energy by moving object
If non-linearity correction is skipped, then power consumption is reduced, but communication reliability deteriorates
Solution Approach 1:
The system uses the non-linearity level indicator as a control parameter to determine when skipping non-linearity correction is safe. By comparing the indicated level against a threshold, the system dynamically adjusts the correction behavior to maintain reliability when needed while saving power when conditions permit.
Solution Approach 2:
The system implements a dynamic decision-making process where the UE continuously evaluates the non-linearity level indicator and adjusts its correction behavior accordingly. This ensures that reliability is maintained when the indicator shows high non-linearity levels while allowing power savings when levels are low.
4Loss of time
If non-linearity correction is skipped, then processing latency is reduced, but communication reliability deteriorates
Solution Approach 1:
The system changes the processing parameter of non-linearity correction by using the non-linearity level indicator to conditionally enable or disable the correction function. This parameter-based control reduces latency by skipping unnecessary processing while maintaining reliability when the indicator shows correction is needed.
Solution Approach 2:
The system implements dynamic processing where the UE adjusts its correction behavior in real-time based on the non-linearity level indicator. This dynamic approach minimizes processing latency by only applying correction when channel conditions indicate it is necessary, thus balancing speed and reliability.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, an indication of a non-linearity level associated with transmit antennas of the network node. The UE may selectively perform non-linearity correction for a downlink communication received from the network node based at least in part on the indication of the non-linearity level. Numerous other aspects are described.