Dynamic Spectrum Access via Frequency Access Manager
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Solution Overview
Problem
Current dynamic spectrum access techniques in wireless communications, particularly in network sharing contexts, face challenges such as inefficient interference management, inaccurate geo-localization, and pre-defined static resource allocation, which limit flexible spectrum access and lead to congestion and poor user experience, especially in dense access scenarios and heterogeneous networks.
Innovation Solution
A method that involves a frequency access manager to retrieve and analyze data from connected access nodes and requesting access nodes, determining mutual interference, and transmitting frequency access data to enable better management of frequency resources, using a combination of profile data including intrinsic and extrinsic features, geo-location, and state parameters to facilitate flexible spectrum access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pre-defined static resource allocation is used, then network management is simplified, but spectrum utilization efficiency deteriorates and congestion occurs in dense access scenarios
Solution Approach 1:
The patent implements dynamic spectrum allocation where the spectrum manager continuously adjusts resource allocation based on real-time network conditions, user demands, and interference levels. This transforms the static resource allocation into a dynamic system that adapts to changing conditions, improving spectrum utilization efficiency while maintaining manageable complexity through automated decision-making algorithms.
Solution Approach 2:
The system employs feedback mechanisms where the spectrum manager receives continuous information about network state, user experiences, and interference conditions, then uses this feedback to adjust spectrum allocation decisions. This closed-loop control enables the system to respond to congestion and optimize resource distribution without requiring complex manual management.
2Productivity
If dynamic spectrum access is implemented, then spectrum utilization improves, but interference management complexity increases
Solution Approach 1:
The patent introduces a spectrum manager as an intermediary entity that mediates between multiple access nodes and the spectrum resource. This intermediary centralizes interference management functions, collecting information from all nodes and making coordinated allocation decisions, thereby reducing the overall system complexity compared to distributed interference management approaches.
Solution Approach 2:
The system manages interference by dynamically changing key parameters such as allocation factors, power levels, and resource block assignments based on real-time conditions. The spectrum manager adjusts these parameters to balance spectrum utilization with interference control, enabling dynamic access while maintaining manageable complexity through parameter-based control.
3Measurement precision
If geo-localization data is used for spectrum allocation, then interference assessment accuracy improves, but measurement and data processing requirements increase
Solution Approach 1:
The patent implements preliminary geo-localization and profiling of access nodes during network setup and planning phases. This preliminary action creates a database of node locations, characteristics, and interference patterns that can be reused for spectrum allocation decisions, reducing the need for real-time measurements and data processing while maintaining accurate interference assessment.
Solution Approach 2:
The system uses geo-localization data to create virtual models or copies of the physical network environment, including node positions, propagation conditions, and interference characteristics. These virtual models enable the spectrum manager to simulate and assess interference scenarios without requiring extensive real-time measurements, reducing data processing requirements while maintaining assessment accuracy.
Data Source
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AI summary
It is proposed a method for enabling a requesting access node to use at least one radio frequency associated to at least one wireless communication network comprising at least one connected access node. Such method is remarkable in that it comprises, executed by a frequency access manager comprised in said wireless communication network, the following steps of : retrieving at least one piece of data related to said at least one connected access node and related to said requesting access node; determining a mutual interference information between said requesting access node and said at least one connected access node in function of said at least one piece of data related to said at least one connected access node and related to said requesting access node; transmitting, to said requesting access node of a frequency access data in function of said determined mutual interference information.