SRS Overlap Handling in User Equipment for Channel Interference
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Solution Overview
Problem
The challenge in wireless communication systems is the unwanted interference between sounding reference signaling and other physical channel signaling, particularly in high-frequency and low-latency scenarios, which affects channel estimation and downlink throughput.
Innovation Solution
A method and user equipment are described to handle overlapping schedules by omitting scheduled sounding reference signaling in specific time intervals, using an omitting configuration to avoid interference, allowing partial or complete dropping of SRS based on predefined rules and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sounding reference signaling is transmitted according to schedule, then channel estimation quality is improved, but interference with physical channel signaling increases
Solution Approach 1:
The patent segments the time interval into multiple parts: a first time interval for sounding reference signaling and a second time interval for physical channel signaling. By dividing the time resources and assigning different signaling types to different segments, the patent eliminates interference while maintaining channel estimation quality.
Solution Approach 2:
The patent resolves the time-domain conflict by introducing frequency domain separation. Sounding reference signaling and physical channel signaling are transmitted in overlapping time intervals but on different frequency resources, thereby eliminating interference through dimensional separation.
2Productivity
If sounding reference signaling schedule overlaps with physical channel signaling schedule, then time resource utilization is improved, but signal interference occurs
Solution Approach 1:
The patent allows time interval overlap between sounding reference signaling and physical channel signaling schedules to improve resource utilization, but prevents interference by separating them in the frequency domain. Different frequency resources are assigned to each signaling type within the overlapping time period.
Solution Approach 2:
The patent applies different quality requirements to different parts of the signal transmission. Sounding reference signaling uses specific frequency resources with high precision requirements for channel estimation, while physical channel signaling uses other frequency resources with different characteristics, allowing both to coexist without interference.
Data Source
AI summary
There is described a method of operating a user equipment in a radio access network. The method comprises transmitting signaling based on a sounding reference signaling schedule, the sounding reference signaling schedule scheduling transmission of sounding reference signaling in a first time interval, wherein the first time interval overlaps, in an overlap time interval, with a second time interval, for which physical channel signaling is scheduled, wherein transmitting signaling comprises transmitting, in the overlap time interval, the physical channel signaling omitting the scheduled sounding reference signaling. The disclosure also pertains to related devices and methods.