Frequency Resource Allocation in Shared Spectrum Wireless Networks
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing data rates and quality of service, particularly in utilizing shared spectrum bands due to interference and regulatory complexities, which limits their ability to meet increasing data traffic demands.
Innovation Solution
A method and apparatus for allocating frequency resources on shared spectrum by acquiring a frequency hopping pattern for control data and defining a user data band based on the control data band, allowing for efficient communication of both control and user data on a total frequency band, utilizing listen-before-talk techniques to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If unlicensed spectrum bands are utilized to increase capacity, then data traffic support is improved, but interference control and regulatory compliance become more complex
Solution Approach 1:
The system performs preliminary actions by acquiring information about frequency hopping patterns for control data before allocating resources for user data. This advance planning allows the system to identify suitable frequency resources and define user data bands in advance, reducing interference through proactive resource management rather than reactive control
Solution Approach 2:
The frequency spectrum is segmented into distinct control data bands and user data bands. The control data band is identified through frequency hopping patterns, while the user data band is defined as a function of the control data band according to predetermined criteria. This segmentation allows independent optimization of each band while maintaining overall system coordination
2Productivity
If frequency resources are allocated dynamically to improve efficiency, then communication efficiency is improved, but resource allocation complexity increases
Solution Approach 1:
The system implements dynamic resource allocation where the user data band is defined as a function of the control data band according to predetermined criteria. This allows the resource allocation to adapt dynamically to changing conditions while maintaining a structured relationship between control and user data bands, balancing flexibility with manageability
Solution Approach 2:
The system uses feedback mechanisms where the definition of the user data band is based on the acquired control data band information. This feedback loop allows the system to optimize resource allocation based on actual channel conditions and interference patterns while maintaining a systematic approach to resource management
3Quantity of substance
If control data and user data are communicated on overlapping bands, then spectrum utilization is improved, but interference management becomes more difficult
Solution Approach 1:
The system performs preliminary identification of the control data band through frequency hopping patterns before defining the user data band. This advance knowledge allows the system to allocate user data resources in frequency resources that are free from control data transmissions, preventing interference before it occurs
Solution Approach 2:
The system applies local quality by allowing overlapping of control and user data bands in frequency domain while maintaining separation in time domain through frequency hopping. The user data band is defined to be at least partly overlapping with the control data band, but interference is avoided by transmitting user data only on free frequency resource units not currently used by control data
Data Source
AI summary
A wireless communications method comprises: acquiring, by a radio apparatus, information indicating a frequency hopping pattern for control data in order to perform communication of the control data on at least one frequency resource unit hopping in frequency, wherein the frequency hopping pattern defines a control data band within the shared spectrum; acquiring knowledge of a user data band defined as a function of the control data band according to a predetermined criterion in order to per-form communication of user data on at least one free frequency resource unit within the user data band, wherein the user data band is within the shared spectrum and at least partly overlapping with the control data band; acquiring knowledge of a total frequency band comprising the control data band and the user data band; and causing communication of both the control data and the user data on the total frequency band.