Timing Measurement Method for Wireless Beam Selection
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Solution Overview
Problem
In multi-beam wireless communications systems, the delay differences between data and measurement channels cause intersymbol interference, affecting data demodulation due to different paths taken by these channels, which existing technologies fail to adequately address.
Innovation Solution
The method involves selecting beams based on reference signal received powers (RSRPs) to ensure that multipath information covers the data channel's status, determining a timing position using power delay profiles, and performing weighted combinations to identify the earliest arrival path, thereby synchronizing data and measurement channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different beams are used for data channel and measurement channel, then beam diversity and coverage are improved, but delay difference and intersymbol interference occur
Solution Approach 1:
The patent introduces a timing adjustment mechanism that acts as an intermediary between the data channel and measurement channel. The UE measures timing on the measurement channel and applies timing advance adjustments to the data channel transmission, mediating the delay difference caused by using different beams for the two channels.
Solution Approach 2:
The patent changes the timing parameter of the data channel based on measurements from the measurement channel. By adjusting the timing advance parameter dynamically, the system compensates for the delay differences introduced by using different beams, maintaining synchronization without requiring the same beam for both channels.
2Measurement precision
If timing measurement is performed on multiple beams, then timing accuracy is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies partial action by performing timing measurement on a selected subset of beams rather than all available beams. The UE identifies candidate beams and performs timing measurement on these partial set, which is sufficient to achieve accurate timing synchronization without the excessive complexity of processing all beams.
Solution Approach 2:
The patent segments the beam set into different groups (candidate beams, selected beams) and performs timing measurement selectively on specific segments. This segmentation allows the system to focus computational resources on the most relevant beams, improving timing accuracy while reducing overall processing complexity.
Data Source
AI summary
Example timing measurement methods and apparatus are described. One example method includes that user equipment receives M beams from a base station, where M is a positive integer. The user equipment performs timing measurement on N beams in the M beams, where the N beams are selected from the M beams based on reference signal received powers (RSRPs) of the M beams, and N is a positive integer less than or equal to M.