Wireless UE Signal Quality Reporting with Delay and Collision Handling
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Solution Overview
Problem
Current mechanisms for wireless user equipment (UE) devices to report signal quality information, such as SINR, are inefficient, leading to suboptimal beam selection and communication performance due to delays and collisions in reporting processes.
Innovation Solution
The method involves performing measurements of SINR and interference levels at multiple instances, averaging these measurements, and transmitting beam quality information to a base station with controlled delay, while also handling collisions by prioritizing the transmission of signal quality information to minimize peak-to-average power ratio (PAPR) and ensuring only relevant beams are reported.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE device performs measurements and reports beam quality information using conventional mechanisms, then the reporting process is simple, but delays and collisions occur leading to suboptimal beam selection and communication performance
Solution Approach 1:
The base station pre-configures the UE with reporting parameters including time intervals and resource allocations before measurement and reporting occur. This preliminary configuration enables the UE to perform measurements and report at optimized times without real-time coordination delays, directly addressing the reporting delay issue while maintaining accurate beam selection
Solution Approach 2:
The system implements a feedback mechanism where the base station receives beam quality information from the UE and uses this feedback to make informed beam selection decisions. The feedback loop is optimized by controlling the timing and content of reports, ensuring that the most relevant beam quality information is provided without unnecessary delays
2Measurement precision
If the UE device transmits signal quality information frequently to improve accuracy, then beam quality reporting accuracy improves, but peak-to-average power ratio increases and collisions occur
Solution Approach 1:
The UE determines beam quality information locally at the UE based on measurements, and only transmits this processed quality information rather than raw measurement data. This local processing reduces the amount of data transmitted, lowering the peak-to-average power ratio while maintaining the accuracy needed for beam selection
Solution Approach 2:
The system uses periodic reporting where the UE transmits beam quality information at predetermined time intervals configured by the base station. This periodic action ensures consistent accuracy in beam quality reporting while avoiding excessive transmission frequency that would increase power consumption and cause collisions
3Reliability
If multiple beams are monitored and reported to improve communication performance, then beam selection quality improves, but reporting complexity and collision probability increase
Solution Approach 1:
The UE extracts and reports only the most relevant beam quality information, such as the quality of the best beam or beams above a certain threshold, rather than reporting all measured beams. This extraction approach maintains communication performance by ensuring the base station receives sufficient information for beam selection while reducing reporting complexity and collision probability
Data Source
AI summary
A wireless user equipment (UE) may employ any of various mechanisms for reporting signal quality measurements to a wireless network. The UE may impose a time delay between measurement and reporting, based on a delay parameter K. The UE may average measurements obtained at different measurement instances. The UE may employ any of various schemes for prioritizing transmission of one type of report over another, when temporal collisions occur between different types of report. The UE may employ a differential report that includes a state for indicating that a beam is not workable. The UE may employ a beam index that includes a state for indicating an invalid beam. A base station may receive a signal quality report and determine workability of a beam, e.g., by triggering a report of channel state information.