IDC Interference Elimination via Proactive Inter-Frequency Measurement
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Solution Overview
Problem
In-device coexistence (IDC) interference in wireless communication systems, particularly in LTE systems, occurs due to the operation of multiple communication modules within user equipment at neighboring frequencies, leading to potential service quality deterioration and delayed handovers.
Innovation Solution
A method where the first communication module in user equipment receives measurement setup information from a base station, performs inter-frequency measurements based on this information, and reports results to the base station, disregarding threshold values when other coexisting communication modules start or stop operations, to quickly address IDC interference and prevent service quality deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication modules operate at neighboring frequencies to provide diverse services, then service versatility and adaptability improve, but in-device coexistence interference increases causing service quality deterioration
Solution Approach 1:
The patent applies preliminary action by having the first communication module perform inter-frequency measurements in advance before handover is needed. When IDC interference is detected or anticipated, the module proactively measures alternative frequencies and prepares handover parameters, enabling fast handover execution without waiting for interference to worsen service quality.
Solution Approach 2:
The patent implements feedback mechanisms where the first communication module continuously monitors interference levels from coexisting modules and reports measurement results to the base station. This feedback loop enables dynamic adjustment of operating parameters and triggers handover procedures when interference thresholds are exceeded, thereby maintaining service quality while allowing multiple modules to operate.
2Measurement precision
If traditional measurement methods use threshold-based triggering, then measurement precision is maintained, but handover response time increases causing service quality deterioration
Solution Approach 1:
The patent applies preliminary action by performing inter-frequency measurements proactively when IDC interference is detected or anticipated, rather than waiting for threshold-based conditions to trigger measurements. This advance preparation ensures that measurement results are ready when handover is needed, reducing handover response time while maintaining measurement precision through structured measurement procedures.
Solution Approach 2:
The patent implements dynamic measurement triggering that adapts to real-time interference conditions. Instead of static threshold-based triggering, the system dynamically adjusts measurement initiation based on detected interference levels, module operational states, and network conditions. This dynamic approach enables fast handover response while maintaining precision by triggering measurements only when necessary based on current system state.
3Reliability
If the first communication module continuously performs measurements to detect interference, then service quality is maintained, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by implementing discontinuous measurement procedures where the first communication module performs inter-frequency measurements at specific intervals or triggered by particular events (such as module startup, interference detection, or handover requirements) rather than continuously. This periodic measurement approach maintains service quality reliability while significantly reducing energy consumption compared to continuous monitoring.
Solution Approach 2:
The patent implements self-service mechanisms where the measurement and handover procedures are autonomously managed by the communication modules based on detected interference conditions. The system self-triggers measurements and executes handovers without requiring constant external control, reducing the energy consumption of control signaling while maintaining service quality through autonomous response to interference conditions.
Data Source
AI summary
The present invention discloses a method for a first communication module of a user equipment measuring for eliminating in-device coexistence (IDC) interference in a wireless communication system. More particularly, the present invention comprises the following steps: receiving a message from one or more second communication modules which coexists in the terminal; performing inter-frequency measurement based on the setting information related to measuring when the message indicates the beginning of the operation of the second communication module; and reporting to the base station the result of the inter-frequency measurement.