Access Point Transmission Control Under Grid-Based Interference Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing interference mitigation techniques for access points in communication networks often assume worst-case scenarios, leading to tighter than necessary restrictions and inefficient use of spectrum due to conservative interference limits, especially for safety-critical systems with movable or stationary victims.
Innovation Solution
A method and control node that utilize geographical deployment and traffic information to estimate interference at geographically spread grid points, allowing adjustments to transmission settings to meet prescribed limits, thereby optimizing interference suppression and reducing unnecessary power restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If worst-case scenario assumptions are used for interference limits, then victim system protection is improved, but access point transmission efficiency deteriorates
Solution Approach 1:
The patent implements dynamic interference management by transitioning from static worst-case assumptions to real-time interference estimation. The control node continuously monitors actual interference levels and adjusts access point transmission parameters dynamically, allowing the system to adapt to changing conditions while maintaining victim protection and optimizing transmission efficiency.
Solution Approach 2:
The patent changes the parameter of interference limit calculation from fixed worst-case values to variable values based on actual network conditions. By estimating real interference levels and adjusting transmission power and resource allocation accordingly, the system achieves both victim protection and improved transmission efficiency.
2Object-affected harmful factors
If conservative interference limits are imposed on access points, then interference protection is improved, but spectrum utilization deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the control node receives information about actual interference levels from victim systems and adjusts access point transmission parameters accordingly. This closed-loop approach allows the system to maintain adequate protection while utilizing spectrum more efficiently by avoiding overly conservative limits.
Solution Approach 2:
The patent performs preliminary interference estimation and transmission parameter optimization before actual data transmission occurs. By pre-calculating appropriate transmission levels based on current network conditions, the system avoids both excessive interference and unnecessary spectrum underutilization.
3Object-generated harmful factors
If maximum power restrictions are applied to access points, then interference control is improved, but network throughput deteriorates
Solution Approach 1:
The patent applies dynamic power control where access point transmission power is adjusted in real-time based on actual interference conditions rather than being restricted to fixed maximum levels. This allows the network to achieve high throughput during low-interference periods while maintaining adequate interference control when needed.
Solution Approach 2:
The patent changes transmission power from fixed maximum restrictions to variable power levels based on real interference estimation. By adjusting power parameters dynamically according to network conditions, the system achieves both effective interference control and optimized network throughput.
Data Source
AI summary
There is provided techniques for interference-limited transmission from access points in a communication network. Access point information is obtained. Traffic information is obtained. An estimate of interference per each grid point in a set of geographically spread grid points for the access points is obtained. Adjustments are specified to transmission settings of at least one of the access points based on an aggregate of the obtained estimates of interference for all the access points per each of the grid points. The adjustments are conditioned on a prescribed interference limit for the subset of the grid points and on the traffic information. Control commands defined by the specified adjustments are provided to the transmission settings towards the at least one of the access points.