Wireless Resource Scheduling for Interference Mitigation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The increasing interference between wireless networks operating on the same frequencies poses a challenge for network providers, particularly in coordinating between different operators, as existing technologies struggle to effectively mitigate interference from external networks.

Innovation Solution

A method and system that determine portions of bandwidth subject to interference and schedule resource allocation for wireless devices within a network to avoid or utilize these interfered resources based on distance and channel conditions, allowing devices closer to the access node to use affected resources with increased power or modulation, while devices farther away are instructed to avoid them.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless networks operate on the same frequencies to increase network proliferation, then network coverage and accessibility are improved, but interference between different operators' networks increases

Engineering Contradiction:

Improvenetwork proliferationVSAvoidinterference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by differentiating resource allocation based on geographic location and interference conditions. Different wireless devices in different locations receive different instructions regarding interfered resources - devices closer to the access node are instructed to use interfered resources with higher power, while devices farther away are instructed to avoid them. This localized adaptation resolves the contradiction by allowing network proliferation while mitigating interference effects in specific local contexts.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes operational parameters (transmit power, resource allocation) based on interference conditions and device location. By dynamically adjusting these parameters, the system allows networks to operate on the same frequencies while adapting to local interference conditions, thus resolving the contradiction between network proliferation and interference mitigation.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If resource allocation is optimized for devices with good channel conditions, then network efficiency is improved, but devices with poor channel conditions experience degraded service quality

Engineering Contradiction:

Improvenetwork efficiencyVSAvoidservice quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies local quality by providing differentiated resource allocation instructions based on individual device channel conditions and location. Devices with good channel conditions closer to the access node receive instructions to use interfered resources with higher power, while devices with poor channel conditions farther away receive instructions to avoid interfered resources. This localized differentiation maintains network efficiency while ensuring service quality for all devices.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies partial action by selectively applying interference mitigation strategies to specific devices based on their needs. Not all devices receive the same treatment - only certain devices are instructed to use interfered resources with higher power, while others are instructed to avoid them. This partial application of resources resolves the contradiction by optimizing for both efficiency and reliability where applicable.

Inventive Principle:

Principle #16Partial or excessive action

3Ease of operation

If all wireless devices are instructed to avoid interfered resources, then interference mitigation is simplified, but overall network capacity and throughput are reduced

Engineering Contradiction:

Improveinterference mitigationVSAvoidnetwork capacity

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent applies local quality by providing differentiated instructions to different devices rather than a uniform approach. Devices closer to the access node with better channel conditions are instructed to use interfered resources with higher power, while devices farther away are instructed to avoid them. This localized differentiation maintains ease of operation through clear device-specific instructions while preserving network capacity by allowing useful transmissions on interfered resources.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies partial action by selectively instructing only certain devices to avoid interfered resources rather than all devices. This partial application maintains interference mitigation effectiveness while preserving network capacity by allowing devices in favorable positions to utilize interfered resources, thus resolving the contradiction between ease of operation and network capacity.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11197300B1Mitigating interference caused by external networks

Publication Date: 2021.12.07 SPRINT SPECTRUM LLC

AI summary

Mitigating interference caused by external networks includes identifying air interface resources within a wireless air interface that are subject to interference from the external network, scheduling resources for a first one or more wireless devices reporting channel conditions that meet a threshold or being a threshold distance from a serving access node to avoid using the identified air interface resources, and instructing a second one or more wireless devices reporting channel conditions that do not meet the threshold or within a threshold distance from the serving access node to use the identified air interface resources.