LTE Resource Block Scheduling for Satellite Interference Mitigation
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Solution Overview
Problem
Long Term Evolution (LTE) systems experience satellite interference due to high power spectral density (PSD) in certain resource blocks, which existing technologies fail to effectively mitigate, leading to communication disruptions.
Innovation Solution
A computer-implemented system and method where base stations in an LTE network monitor and manage resource blocks by calculating power spectral density (PSD) and distance from wireless devices to tower, reducing interference by reserving problematic resource blocks for devices close to the tower and limiting their use across multiple sites when PSD thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource blocks are allocated to wireless devices regardless of location, then network capacity and resource utilization are improved, but satellite interference increases due to high power spectral density from distant devices
Solution Approach 1:
The patent applies local quality by differentiating resource block allocation based on the geographic location and distance of wireless devices from the base station. Devices at different locations are assigned different resource blocks, with closer devices able to use higher-power blocks that would cause satellite interference when used by distant devices. This location-specific allocation resolves the contradiction by maintaining high network capacity while preventing satellite interference through spatially differentiated resource assignment.
2Area of stationary object
If high power spectral density is used to extend coverage area, then service range is improved, but satellite interference increases
Solution Approach 1:
The patent changes the parameter of power spectral density allocation based on device location. Instead of using uniformly high power across all resource blocks to extend coverage, the system dynamically adjusts which devices receive high-power resource blocks based on their distance from the base station. Distant devices are assigned lower-power resource blocks, preventing satellite interference while still providing extended coverage through appropriate resource allocation.
3Object-affected harmful factors
If resource blocks are reserved for close devices only, then satellite interference is reduced, but resource utilization efficiency decreases
Solution Approach 1:
The patent applies universality by creating a resource block allocation system that serves multiple functions simultaneously: it reduces satellite interference for distant devices while maintaining high resource utilization through efficient allocation to close devices. The same resource block allocation mechanism universally applies to all devices but adapts its assignment based on location, achieving both interference reduction and optimal resource utilization through a single multi-functional system.
Data Source
AI summary
A computer-implemented method, system, and computer-readable storage media for scheduling physical resource blocks are provided. Base stations, of a communication radio access network, may be configured with schedulers that assign one or more physical resource blocks to a communication channel of a wireless device based on distance or power. The physical resource blocks allow the wireless device to communicate with the base station. Some resource blocks may be monitored across multiple sites to determine whether an aggregate power for the resource blocks exceeds a threshold. When the aggregate power threshold is surpassed, the schedulers may limit or prevent use of the identified resource blocks.