Cognitive Wireless Frequency Allocation via Minimum ROI Selection
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Solution Overview
Problem
Current cognitive wireless communication systems face challenges in maximizing the opportunistic utilization efficiency of idle frequencies without interfering with primary systems, leading to suboptimal frequency resource management.
Innovation Solution
A method and apparatus that select a cognitive wireless communication device with the minimum Range of Interference (ROI) from multiple devices to allocate idle frequencies, using a receiver to gather ROI information and a frequency allocator to determine the optimal allocation, thereby minimizing interference and enhancing frequency utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cognitive wireless communication devices opportunistically use idle frequencies of primary systems, then frequency utilization efficiency is improved, but interference with primary systems increases
Solution Approach 1:
The system performs preliminary actions by having secondary devices report their ROI values before frequency allocation occurs. The allocator uses these pre-collected ROI information to make informed decisions about which device should receive the idle frequency, ensuring interference is minimized from the outset rather than addressing interference after it occurs.
Solution Approach 2:
The invention changes the parameter of frequency allocation decision-making from a random or first-come-first-served approach to a parameter-based selection approach using ROI values. By selecting devices with minimum ROI values, the system optimizes the balance between frequency utilization efficiency and interference minimization.
2Productivity
If multiple cognitive wireless communication devices compete for idle frequencies, then frequency resource management becomes more complex, but opportunistic utilization efficiency increases
Solution Approach 1:
The invention extracts the critical decision-making complexity from the overall system by isolating it into a dedicated frequency allocation mechanism that uses simple ROI comparison criteria. This separates the complex multi-device coordination problem into a manageable selection process based on minimum ROI values.
Solution Approach 2:
The system implements feedback by having secondary devices report their ROI values to the allocator, which then uses this information to make allocation decisions. This feedback mechanism simplifies management complexity by providing structured information about device characteristics, enabling more transparent and manageable frequency allocation.
3Ease of operation
If idle frequencies are allocated without considering interference ranges, then allocation process is simplified, but collision likelihood with primary systems increases
Solution Approach 1:
The system performs preliminary action by collecting ROI information from all competing devices before the allocation process begins. This pre-preparation of interference range data allows the allocator to make reliable decisions without adding complexity during the actual allocation moment, maintaining simplicity while improving reliability.
Data Source
AI summary
An apparatus and method for sharing a frequency are provided. A cognitive wireless communication device having a minimum ROI may be selected from among a plurality of cognitive wireless communication devices, and an idle frequency of a primary system may be allocated to the selected cognitive wireless communication device, thereby increasing an opportunistic utilization efficiency of the idle frequency.