Dedicated Discovery Channel for Faster 6 GHz AP Detection
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Solution Overview
Problem
The increasing number of operating channels in unlicensed frequency bands, such as the 6 GHz band, makes it time-consuming and power-consuming for stations (STAs) to determine the proper operating channel for wireless access to an access point (AP) using traditional active and passive scanning methods.
Innovation Solution
Implementing a dedicated discovery channel within the unlicensed frequency band for transmitting discovery information, including identifiers of operating channels, which is periodically broadcast and managed by APs to reduce the need for individual channel scanning by STAs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional active and passive scanning methods are used to determine operating channels, then STAs can identify available APs and their operating channels, but the process becomes time-consuming and power-consuming as the number of operating channels increases
Solution Approach 1:
A dedicated discovery channel is introduced as an intermediary between APs and STAs. This discovery channel carries discovery information that enables STAs to identify available APs and their operating channels without scanning all individual operating channels, thereby resolving the contradiction between accurate channel identification and reduced scanning time
2Measurement precision
If traditional active and passive scanning methods are used to determine operating channels, then STAs can identify available APs and their operating channels, but the process becomes power-consuming as the number of operating channels increases
Solution Approach 1:
The discovery channel serves as a mediator that delivers channel identification information directly to STAs, eliminating the need for STAs to actively scan multiple operating channels. This significantly reduces the power consumption of STAs while maintaining accurate channel identification
3Productivity
If a dedicated discovery channel is implemented within the unlicensed frequency band, then the time and power consumption for channel identification is reduced, but the system complexity increases
Solution Approach 1:
The discovery channel is designed to carry discovery information that serves multiple functions: identifying available APs, determining their operating channels, and enabling rapid association. This multi-functionality approach consolidates multiple operations into a single channel, reducing overall system complexity while improving productivity
Data Source
AI summary
This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for advertising operating channels that are being operated in an unlicensed frequency band. One or more access points (APs) may transmit discovery information on a dedicated discovery channel for the unlicensed frequency band. The discovery information may indicate at least one operating channel that is being used by an AP for providing wireless access. The discovery information also may include other information useful for a station (STA) to discover APs, operating channels, and operating parameters. The STA may monitor the dedicated discovery channel to obtain the discovery information without conducting an active scanning or passive scanning procedure.