RSSI-Based Interference Mapping for Heterogeneous Services
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Solution Overview
Problem
Communication systems face interference issues between heterogeneous wireless networks, leading to disrupted services, particularly in fixed receiving devices like those for satellite broadcasts, due to spatial separation inefficiencies.
Innovation Solution
A method and apparatus for determining interference by measuring RSSIs, setting acceptable interference levels, and calculating protection separation distances and areas using virtual installations on GIS maps to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spatial separation between heterogeneous devices is increased to prevent interference, then service reliability is improved, but space utilization deteriorates
Solution Approach 1:
The patent performs preliminary interference assessment by measuring RSSI values at multiple sample installation points before base station deployment. This allows prediction of potential interference issues in advance, enabling proactive selection of installation locations that satisfy protection separation distance requirements, thus preventing service disruption without requiring excessive spatial separation
Solution Approach 2:
The patent creates a virtual model of the base station installation environment using GIS maps and simulates interference scenarios. By copying real-world geographic features and calculating virtual RSSI values, the system can assess interference risks without physical deployment, optimizing space utilization while ensuring service reliability
2Area of stationary object
If spatial separation between heterogeneous devices is minimized to improve space utilization, then space utilization is improved, but service reliability deteriorates due to increased interference
Solution Approach 1:
The patent replaces physical spatial separation (mechanical approach) with signal-based interference assessment using RSSI measurements and packet loss rate calculations. By substituting the mechanical separation requirement with a signal quality threshold (acceptable packet loss rate), the system can determine minimum protection separation distances that enable closer device placement while maintaining service reliability
Solution Approach 2:
The patent transforms the interference assessment from a binary presence/absence criterion to a quantitative parameter-based assessment using RSSI values and packet loss rates. By changing the assessment parameter from qualitative to quantitative, the system can precisely determine protection separation distances, optimizing both space utilization and service reliability
Data Source
AI summary
An operating method of a receiving device of a communication system may comprise: receiving an identical signal from an identical transmitting device; receiving interference signals from heterogeneous transmitting devices installed at sample installation points in a base station installation target area; and setting an acceptable interference level on the basis of received signal strength indicators (RSSIs) of the interference signals.