Sounding Reference Signal Omission During Channel Overlap
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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 scenarios where their schedules overlap, which can degrade channel estimation and downlink throughput.
Innovation Solution
A method and user equipment are described to handle such overlaps by omitting the scheduled sounding reference signaling in specific time intervals, allowing efficient channel sounding while minimizing interference, using an omitting configuration based on predefined rules and operational parameters.
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 when schedules overlap
Solution Approach 1:
The network node determines an omitting configuration in advance that identifies time intervals where sounding reference signaling should be omitted. This preliminary determination prevents scheduling conflicts before they occur, allowing the system to proactively avoid interference while maintaining channel estimation quality in non-overlapping intervals
Solution Approach 2:
The patent extracts or removes sounding reference signaling from specific time intervals where it would overlap with physical channel signaling. By taking out the problematic signaling instances and transmitting only in non-overlapping intervals, the system eliminates interference while preserving channel estimation functionality
2Object-affected harmful factors
If sounding reference signaling is omitted in overlapping time intervals, then interference with physical channel signaling is reduced, but channel estimation quality may deteriorate
Solution Approach 1:
Instead of completely eliminating sounding reference signaling, the system applies partial action by omitting it only in specific overlapping time intervals while maintaining transmission in non-overlapping intervals. This partial approach reduces interference while preserving sufficient channel estimation quality through the remaining signaling instances
Solution Approach 2:
The system changes the temporal parameters of sounding reference signaling transmission by dynamically adjusting which time intervals are used based on the omitting configuration. This parameter adjustment allows optimization of both interference reduction and channel estimation quality by selecting appropriate transmission intervals
3Productivity
If sounding reference signaling schedule overlaps with physical channel signaling schedule, then resource utilization efficiency is improved, but unwanted interference occurs
Solution Approach 1:
The patent segments the sounding reference signaling transmission into separate time intervals based on the omitting configuration. By dividing the signaling into segments that are transmitted only in non-overlapping intervals, the system maintains resource utilization while avoiding interference through temporal separation
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.