WLAN Terminal Active Domain Scanning for Regulatory Compliance

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Solution Overview

Problem

Current WLAN terminal configurations, such as those adhering to the IEEE 802.11d standard, face inefficiencies in scanning times and regulatory compliance when operating across different regulatory domains, particularly for terminals that frequently move within the same domain, as they rely heavily on passive scanning to avoid regulatory violations.

Innovation Solution

A terminal that actively scans domain-independent channels to quickly obtain regulatory domain information before switching to passive scanning of domain-dependent channels, ensuring compliance and reducing scanning time by utilizing program instructions to configure itself for operation within unknown regulatory domains.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal uses passive scanning to avoid regulatory violations, then regulatory compliance is improved, but scanning time increases

Engineering Contradiction:

Improveregulatory complianceVSAvoidscanning time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The scanning process is segmented into two distinct phases: active scanning of domain-independent channels followed by passive scanning of domain-dependent channels. This segmentation allows the terminal to quickly identify regulatory domain information through active scanning while maintaining regulatory compliance through subsequent passive scanning, thereby resolving the contradiction between compliance and scanning time.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The terminal performs preliminary active scanning of domain-independent channels before engaging in passive scanning of domain-dependent channels. This preliminary action enables the terminal to quickly obtain regulatory domain information and configure itself appropriately, reducing the overall scanning time while ensuring compliance is maintained throughout the process.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the terminal actively scans domain-independent channels, then scanning speed is improved, but regulatory compliance risk increases

Engineering Contradiction:

Improvescanning speedVSAvoidregulatory compliance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

Different scanning methods are applied to different channel types: active scanning is used specifically for domain-independent channels where speed is prioritized, while passive scanning is used for domain-dependent channels where compliance is prioritized. This local differentiation allows the terminal to optimize scanning speed where safe while maintaining compliance where required.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Domain-independent channels serve as an intermediary mechanism that allows the terminal to quickly acquire regulatory domain information through active scanning without immediately engaging in potentially non-compliant transmissions. This intermediary approach enables speed optimization while maintaining a safety buffer for regulatory compliance.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the terminal relies on passive scanning, then regulatory compliance is maintained, but adaptability to unknown regulatory domains decreases

Engineering Contradiction:

Improveregulatory complianceVSAvoidadaptability to unknown regulatory domains

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The terminal performs preliminary active scanning of domain-independent channels before passive scanning to quickly identify and adapt to unknown regulatory domains. This preliminary action enables the terminal to rapidly configure itself for the specific regulatory domain it has detected, significantly improving adaptability while maintaining compliance through subsequent passive scanning.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The scanning methodology is made dynamic by switching between active and passive scanning modes based on the detected regulatory domain. When an unknown domain is detected, the terminal dynamically transitions from passive to active scanning to accelerate domain identification, then switches back to passive scanning for compliance-maintained operation, thereby enhancing adaptability without sacrificing reliability.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9974080B2Terminal configurable for use within an unknown regulatory domain

Publication Date: 2018.05.15 HAND HELD PRODS INC

AI summary

A terminal for use within an unknown regulatory domain, and a computer program product and method for configuring the terminal, are provided. The terminal can comprise first program instructions to actively scan one or more domain independent channels in a frequency band, second program instructions to configure the terminal for use in the unknown regulatory domain in response to the terminal receiving regulatory domain information as a result of actively scanning one or more of the domain independent channels, third program instructions to passively scan one or more domain dependent channels in the frequency band in response to the terminal not receiving the regulatory domain information as a result of actively scanning one or more of the domain independent channels, and fourth program instructions to configure the terminal for use in the unknown regulatory domain in response to passively scanning one or more domain dependent channels in the frequency band.