Radio Node Spectrum Exchange for Grant Approval
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Solution Overview
Problem
In shared-license-access bands of frequencies, such as CBRS, higher-priority users like the U.S. Government or satellite services can disrupt communication by occupying channels, leading to rejected grant requests and increased time delays for radio nodes to obtain spectrum authorization, impacting communication performance.
Innovation Solution
A radio node dynamically exchanges information about available spectrum by notifying other nodes of rejected requests and determining used portions, allowing it to avoid higher-priority user channels and increase the likelihood of grant approvals, reducing the need for additional requests and maintaining communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radio node submits multiple grant requests to reserve spectrum in the shared-license-access band, then the likelihood of obtaining spectrum authorization increases, but the time delay increases and communication performance deteriorates
Solution Approach 1:
The radio node performs preliminary actions by notifying other nodes of rejected requests and determining used portions of spectrum before submitting new grant requests. This advance information gathering allows the node to select better spectrum portions, reducing the need for multiple retry requests and thereby decreasing time delay while maintaining or improving authorization success rate.
Solution Approach 2:
The system implements feedback mechanisms where radio nodes share information about rejected grant requests and spectrum usage with each other. This feedback loop enables nodes to learn from previous rejections, avoid previously rejected spectrum portions, and make more informed decisions about which spectrum to request,ไป่ reducing repeated failures and time delays.
2Productivity
If a radio node requests spectrum portions that overlap with higher-priority users, then the grant request may be approved, but the request will be rejected when higher-priority users are actually using the channel
Solution Approach 1:
Before submitting grant requests, the radio node performs preliminary detection by notifying other nodes of rejected requests and determining which portions of the shared-license-access band are currently in use. This advance knowledge allows the node to avoid requesting spectrum portions that higher-priority users are actively using, thereby preventing future rejections and improving the reliability of grant requests.
Solution Approach 2:
The radio node takes preliminary anti-action by proactively avoiding spectrum portions that are likely to be occupied by higher-priority users. By sharing rejection information and determining used portions in advance, the node preemptively prevents the harmful effect of requesting already-occupied spectrum, thereby improving grant request success rate without sacrificing productivity.
Data Source
AI summary
A radio node that dynamically exchanges information specifying available spectrum in a shared-license-access band of frequencies is described. During operation, the radio node may provide a first grant request to a computer, where the first grant request includes a request to reserve a first portion of the shared-license-access band of frequencies for use by the radio node. Then, the radio node may receive from the computer a grant response. When the grant response indicates that the first grant request is denied, the radio node may provide to a second radio node a first notification that the request for a first portion of the shared-license-access band of frequencies was rejected. Similarly, the radio node may receive from the second radio node a second notification that a request for a second portion of the shared-license-access band of frequencies was rejected.