Dynamic Physical Resource Block Blanking for Satellite Interference
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Solution Overview
Problem
Noise and interference from nearby user devices communicating with terrestrial access points using overlapping radio frequency spectra can degrade communications between user devices and aerospace access points.
Innovation Solution
A method where a server identifies overlapping base stations and generates instructions to automatically blank specific physical resource blocks on the uplink channel between these base stations and other user devices, reducing interference by matching the radio frequencies used by the user device and aerospace access point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If physical resource blocks are shared between terrestrial and aerospace access points, then spectrum utilization efficiency is improved, but communication reliability deteriorates due to interference
Solution Approach 1:
The physical resource blocks are segmented into different sets: some PRBs are allocated to terrestrial access points while others are reserved for aerospace access points. This segmentation allows both systems to operate simultaneously on the same frequency spectrum without mutual interference, thereby maintaining both high spectrum utilization and reliable communications.
Solution Approach 2:
The system dynamically adjusts the allocation of physical resource blocks based on real-time conditions. When aerospace access points are active, their required PRBs are identified and protected from terrestrial allocations. This dynamic adaptation ensures that spectrum resources are efficiently utilized while preventing interference that would compromise communication reliability.
2Productivity
If terrestrial base stations use all available physical resource blocks, then data transmission capacity is improved, but interference to aerospace communications increases
Solution Approach 1:
The system performs preliminary identification of physical resource blocks that may be used by aerospace access points before allocating them to terrestrial base stations. By proactively identifying and protecting these PRBs in advance, the system prevents interference from occurring, allowing terrestrial base stations to maximize their data transmission capacity on remaining PRBs without harming aerospace communications.
Solution Approach 2:
The network equipment acts as an intermediary that coordinates resource block allocation between terrestrial and aerospace access points. It receives information about aerospace PRB usage, processes this information to identify conflicting allocations, and generates control messages to prevent interference, thereby enabling both systems to operate at optimal capacity levels.
3Reliability
If physical resource blocks are dynamically blanked to reduce interference, then communication quality for aerospace access points is improved, but spectrum resource utilization decreases
Solution Approach 1:
Instead of blanking all physical resource blocks during aerospace communications, the system applies blanking only to the specific PRBs that would cause or receive interference. This localized approach protects communication quality for aerospace access points while allowing terrestrial base stations to continue utilizing other non-conflicting PRBs, thereby maintaining higher overall spectrum resource utilization.
Data Source
AI summary
Aspects herein provide systems, methods, and media for mitigating uplink degradation, noise, and/or other interference experienced between a user device and a satellite by blanking of physical resource blocks that are being used on the same or an overlapping radio frequency spectrum by user devices communicating with terrestrial base stations via a telecommunications network. When the uplink degradation, noise, and/or other interference is below a signal quality threshold, the telecommunications network identifies base stations with coverage areas that overlap with the coverage area of the satellite. The telecommunications network instructs and causes those base stations to blank physical resource blocks on the uplink channel(s) that correspond to the portions of the radio frequency spectrum at issue. This blanking technique reduces or prevents uplink degradation, noise, and/or other interference experienced between a user device and a satellite and caused by communications between other user devices and the terrestrial base stations.