Spatially Indexed AFC Queries for Multi-AP Channel Management
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Solution Overview
Problem
Conventional automated frequency coordination (AFC) systems require each wireless access point (AP) to periodically query a central registry for wireless parameters, leading to wasteful and redundant queries, especially in deployments where APs are co-located, and regulatory database changes are infrequent.
Innovation Solution
A spatially-indexed approach where a wireless deployment's enclosing polygon is used to query a regulatory database, allowing efficient querying for the entire deployment, with notifications based on regulatory changes, reducing redundant queries and computational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each AP queries the AFC system independently on a per-AP basis, then each AP can obtain its own wireless parameters, but the computational cost and bandwidth consumption increase significantly
Solution Approach 1:
The patent merges multiple individual AP queries into a single spatial query using an enclosing polygon that represents the entire deployment. This combining approach maintains frequency coordination accuracy for all APs while dramatically reducing the number of queries sent to the AFC system, thereby improving query efficiency and reducing bandwidth consumption.
Solution Approach 2:
The enclosing polygon serves as a universal representation that can be used to query wireless parameters for multiple APs simultaneously. This multi-functional approach allows the same spatial query to provide frequency coordination information for the entire deployment rather than requiring separate queries for each individual AP.
2Ease of operation
If each AP performs independent AFC computation, then each AP can determine its own channel and power settings, but the computational resources and time are wasted
Solution Approach 1:
The patent performs preliminary spatial querying at the deployment level to obtain wireless parameters for the entire area before individual AP configuration. This preliminary action retrieves all necessary frequency coordination information in advance, eliminating the need for repeated computations and reducing the time required for individual AP configuration.
Solution Approach 2:
The patent uses the enclosing polygon as a copy or representation of the entire AP deployment. By querying this spatial representation once, the system obtains parameter sets that can be copied and applied to multiple APs within the deployment, avoiding redundant computation for each individual AP while maintaining configuration appropriateness.
3Reliability
If multiple APs in co-located deployments query the registry periodically, then each AP can update its parameters, but redundant queries are generated
Solution Approach 1:
The patent merges periodic parameter updates for multiple co-located APs into a single spatial query using the enclosing polygon. This approach ensures that all APs receive accurate updated parameters from the registry while consuming significantly less bandwidth compared to individual periodic queries from each AP.
Solution Approach 2:
The patent implements periodic parameter updates at the deployment level rather than at the individual AP level. The enclosing polygon is queried periodically to retrieve updated wireless parameters, and these updates are then distributed to all APs within the deployment. This periodic action maintains parameter accuracy while reducing the frequency and volume of registry queries.
Data Source
AI summary
Techniques for improved wireless configuration are provided. One or more enclosing polygons of a deployment of access points (APs) are determined, and a first query for a regulatory database is generated based on the one or more enclosing polygons, where the regulatory database is spatially-indexed. In response to the first query, a set of spatial regions is received, where each spatial region in the set of spatial regions is associated with a corresponding set of wireless parameters. A first set of wireless parameters is determined, for at least a first AP in the deployment of APs, based on the set of spatial regions. The first AP is configured based on the first set of wireless parameters.