Network Node Channel Reconfiguration via RSSI Feedback
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Solution Overview
Problem
Communications networks face challenges in achieving efficient channel selection and spectral efficiency, particularly in the Citizen's Broadband Radio Service (CBRS) band, due to interference from incumbent and opportunistic users, which affects the reliability of channel selection and spectrum usage.
Innovation Solution
A method and network node that utilize Received Signal Strength Indicator (RSSI) measurements from both wireless devices and the network node to trigger and perform channel reconfiguration, selecting a new channel based on RSSI measurements to minimize interference and ensure reliable frequency selection without requiring changes to standardized interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel selection is performed in CBRS band, then spectrum utilization is improved, but interference from incumbent and opportunistic users increases
Solution Approach 1:
The patent implements a feedback mechanism where the network node continuously monitors RSSI measurements from wireless devices and uses this information to dynamically adjust channel selection. The system collects RSSI data, determines interference levels, and triggers channel reconfiguration when interference exceeds thresholds, creating a closed-loop control system that adapts to changing interference conditions in real-time
Solution Approach 2:
The patent applies dynamics by making the channel selection process adaptive rather than static. The network node continuously monitors RSSI measurements and dynamically reconfigures channels based on current interference conditions. This dynamic approach allows the system to respond to changing incumbent and opportunistic user activities, optimizing spectrum utilization while managing interference over time
2Reliability
If channel reconfiguration is performed based on RSSI measurements, then reliability of frequency selection is improved, but complexity of channel management increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple frequency intervals and channels before operation. The network node has a pool of available channels prepared in advance, and when interference is detected, it can quickly switch to a pre-prepared alternative channel without complex real-time calculations, reducing the complexity of channel management while maintaining reliable frequency selection
Solution Approach 2:
The network node performs self-service by autonomously monitoring RSSI measurements, determining interference levels, and selecting new channels without requiring external intervention. The system automatically triggers channel reconfiguration when interference thresholds are exceeded, eliminating the need for manual channel management and reducing operational complexity while improving reliability through consistent automated decision-making
Data Source
AI summary
Embodiments include methods for channel reconfiguration by a network node in a communications network. Such methods include obtaining received signal strength indicator (RSSI) measurements from wireless devices served by the network node at a current channel in a current frequency interval within a current frequency band. the RSSI measurements trigger perform channel reconfiguration to select a new channel for serving the wireless device. the new channel is the current frequency interval in the current frequency band, a new frequency interval in the current frequency band, or a new frequency interval in a new frequency band. The new channel is selected based on RSSI measurements are performed by the network node on one or more of the following: the current channel in the current frequency interval, a different channel in the current frequency interval, or a different channel in the new frequency interval.