Spectrum Controller Routing for Dense Radio Networks

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing technologies lack active and dynamic assessment of spectrum resource quality and availability, hindering effective spectrum management and routing in dense radio network deployments.

Innovation Solution

A method and apparatus for communicating channel assessment and routing information between a spectrum controller and a radio resource manager, where the spectrum controller obtains channel information, assigns availability tags, and generates a channel list indicating available, partially available, or unavailable channels, facilitating improved routing decisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If spectrum sharing is implemented in dense radio networks, then network capacity and routing flexibility improve, but spectrum resource quality assessment and availability management deteriorate due to lack of active monitoring

Engineering Contradiction:

Improverouting flexibilityVSAvoidspectrum resource quality assessment

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent introduces a spectrum controller as an intermediary component between radio networks and the spectrum environment. This mediator actively monitors spectrum conditions, assesses resource quality, and provides routing recommendations, thereby resolving the information loss problem while maintaining routing flexibility in dense deployments

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system implements continuous feedback loops where the spectrum controller monitors spectrum usage, assesses channel quality, and dynamically adjusts routing decisions. This feedback mechanism ensures that spectrum resource quality information is continuously updated and integrated into routing operations, preventing information loss

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If multiple routes are established between node pairs in ultra-dense networks, then network topology flexibility improves, but routing functionality complexity increases

Engineering Contradiction:

Improvenetwork topology flexibilityVSAvoidrouting functionality

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the routing functionality into distinct components: a spectrum controller that handles high-level spectrum assessment and route recommendation, and individual radio networks that execute specific routing decisions. This segmentation reduces the complexity burden on any single component while maintaining overall topology flexibility

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The spectrum controller serves as an intermediary that simplifies routing functionality by centralizing spectrum assessment and route recommendation tasks. Individual radio networks only need to execute pre-evaluated routing decisions, reducing their complexity while enabling multiple flexible routes through coordinated control

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If binary spectrum sharing is used in TVWS or Licensed Shared Access, then spectrum sharing capability improves, but performance degradation occurs due to interference from disparate systems

Engineering Contradiction:

Improvespectrum sharing capabilityVSAvoidsystem performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements active feedback mechanisms where the spectrum controller continuously monitors actual spectrum conditions and interference levels. Based on this real-time feedback, the system dynamically adjusts spectrum allocation and routing decisions to minimize interference, thereby maintaining reliable performance while enabling sophisticated spectrum sharing

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The spectrum controller acts as an intermediary that coordinates spectrum sharing between disparate systems. It actively manages spectrum allocation, monitors interference conditions, and makes intelligent routing decisions that balance the needs of different networks, improving overall system reliability compared to uncoordinated binary sharing approaches

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3097724B1Internetworking between radio resource management and spectrum controller

Publication Date: 2019.07.24 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Figure 1
Figure 2
Figure 3

AI summary

Methods, apparatuses, and computer program products for communicating channel assessment, channel information, and routing information between a spectrum controller (210) and radio resource manager (220). A spectrum controller obtains channel information and classifies a number of radio channels of a network as available, partially available, or unavailable. The availability information is sent to a radio resource manager, which can use the information to determine a routing solution. The radio resource manager can request that the spectrum controller perform an access negotiation for a partially available channel. Based on the result of the negotiation, the radio resource manager may re-route information in the network.