Self-Interference Measurement for Clutter Echo Detection
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in accurately measuring self-interference, especially due to clutter echo, which affects the performance of full-duplex communication and requires improved configuration methods to minimize interference.
Innovation Solution
A method and apparatus for performing self-interference measurement (SIM) with specific configurations for clutter echo detection, involving the transmission and reception of signals like uplink sounding reference signals, uplink demodulation reference signals, physical uplink shared channels, or physical uplink control channels, to identify and report beams with the largest self-interference reference signal receive power due to clutter echo.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard self-interference measurement is performed, then measurement procedure is simple, but clutter echo detection accuracy is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying SIM configuration parameters specifically for clutter echo detection. This includes adjusting measurement parameters such as reference signal types (SRS, DMRS), power levels, timing adjustments, and beam configuration to optimize detection of clutter echo while maintaining manageable system complexity through standardized configuration protocols.
2Productivity
If full-duplex communication is implemented, then spectrum efficiency is improved, but self-interference from clutter echo increases
Solution Approach 1:
The patent implements feedback mechanisms where the wireless device performs clutter echo detection, measures self-interference levels, and reports findings to the network. Based on this feedback, the network adjusts transmission parameters, beam directions, and power levels to minimize clutter echo interference while maintaining full-duplex operation and spectrum efficiency.
Solution Approach 2:
The patent applies preliminary action by performing clutter echo detection and self-interference measurement before actual full-duplex communication begins. This allows the system to identify problematic beams and adjust configurations in advance, preventing interference issues from affecting spectrum efficiency.
3Reliability
If beamforming is optimized, then communication reliability is improved, but detection of interfering beams becomes more difficult
Solution Approach 1:
The patent uses reference signals (such as SRS and DMRS) as intermediaries to detect and measure self-interference from clutter echo. These reference signals serve as mediators that allow the system to quantify interference levels from specific beams without directly observing the interfering signals, thereby maintaining beamforming optimization while enabling accurate interference detection through standardized measurement protocols.
Data Source
AI summary
A configuration to configure a first wireless device to detect clutter echo in order to improve a configuration for SIM. The apparatus receives a SIM configuration having one or more parameters specific to clutter echo detection. The apparatus performs SIM for the clutter echo detection based on the SIM configuration. The apparatus reports one or more beams having a largest self-interference RSRP due to clutter echo.