Dynamic Spectrum Allocation in Multi-RAN Systems

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Solution Overview

Problem

Conventional methods for managing frequency resources in multiple radio access networks, such as fixed spectrum allocation and dynamic spectrum allocation, are inefficient as they do not consider priority between radio access networks and service classes, nor do they account for negotiation and auction among networks, leading to suboptimal resource management.

Innovation Solution

A system and method that employs local resource managers to estimate load values by service classes, spectrum managers to calculate and allocate frequency bandwidths based on network and service class priorities, and a spectrum relay apparatus to manage frequency resources through negotiation and auction, ensuring efficient allocation and management of frequency resources across multiple radio access networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If dynamic spectrum allocation method is used to allocate frequency resources based on measured load, then resource allocation efficiency is improved, but the ability to consider priority between radio access networks and service classes deteriorates

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidpriority consideration capability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent segments the frequency resource allocation process into multiple independent components: load measurement module, priority determination module, and allocation decision module. This segmentation allows each component to specialize in one aspect, enabling the system to simultaneously consider both load conditions and priority levels when allocating frequency resources, thereby resolving the contradiction between allocation efficiency and priority consideration capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic priority adjustment where the priority levels of radio access networks and service classes can be changed in real-time based on network conditions and requirements. This dynamic mechanism allows the system to adapt to changing conditions while maintaining efficient resource allocation, as the priority weights can be adjusted without disrupting the overall allocation framework.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If fixed spectrum allocation method is used to allocate frequency resources in the same ratio, then allocation simplicity is maintained, but resource management efficiency deteriorates

Engineering Contradiction:

Improveallocation simplicityVSAvoidresource management efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent transitions from static fixed ratio allocation to dynamic proportional allocation where the allocation ratio is determined by real-time load measurements and priority levels. This dynamic approach maintains the simplicity of proportional distribution while significantly improving resource management efficiency by adapting to actual network conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the allocation parameters from fixed ratios to variable parameters based on load values and priority weights. By making the allocation parameters dynamic rather than static, the system maintains ease of operation through straightforward proportional allocation while achieving superior resource management efficiency through condition-based parameter adjustment.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If frequency resource allocation is performed considering only loads measured according to radio access networks, then allocation process is simplified, but the ability to consider priority between service classes and negotiation between networks deteriorates

Engineering Contradiction:

Improveallocation process complexityVSAvoidpriority and negotiation consideration capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent segments the allocation decision-making process into distinct functional modules: load measurement, priority determination, and allocation execution. This segmentation allows the system to handle complex considerations of service class priorities and network negotiations through dedicated modules while keeping the overall allocation process manageable and systematic.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces priority levels as an intermediary parameter that mediates between load measurements and final allocation decisions. This intermediary mechanism allows the system to incorporate complex priority considerations and negotiation outcomes without directly complicating the basic allocation process, as priorities serve as a bridging layer that translates complex requirements into allocation guidance.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS7764967B2System for managing frequency resources in multiple radio access networks and method thereof

Publication Date: 2010.07.27 SAMSUNG ELECTRONICS CO LTD

AI summary

Disclosed is a system and method for managing frequency resources, that is, a system and method for dynamically allocating and managing frequency resources in multiple radio access networks (RAN). In multiple radio access networks, the system and method manages frequency resources in consideration of the priorities of radio access networks and the priorities of service classes of each radio access network, and manages the frequency resources through negotiation and auction for frequency resources among the radio access networks.