Basic Service Set Load Information for WLAN Network Selection
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Solution Overview
Problem
Wireless devices experience performance degradation due to the time-consuming process of finding a suitable wireless network, particularly affecting low-latency and high-reliability communications in wireless local area networks (WLANs).
Innovation Solution
Providing detailed basic service set load information, including channel utilization, load history, and power save operation details, to assist wireless devices in selecting the most suitable access point for connection, thereby reducing scanning time and enhancing the precision of network selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless devices perform comprehensive scanning to find suitable access points, then network selection accuracy is improved, but scanning time increases
Solution Approach 1:
The access point collects and publishes load information for multiple basic service sets in advance through beacon frames and probe response frames. This preliminary action allows wireless devices to obtain comprehensive network status information without performing extensive active scanning, thereby improving network selection accuracy while reducing scanning time.
Solution Approach 2:
The access point acts as an intermediary that aggregates load information from multiple basic service sets and makes it available to wireless devices. Instead of devices directly scanning and evaluating each access point individually, the serving access point mediates by providing consolidated load information, reducing the overall scanning burden while maintaining selection accuracy.
2Measurement precision
If wireless devices perform detailed scanning of multiple access points, then network selection precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the complex task of collecting and analyzing load information from multiple access points and relocates it to the serving access point. The serving access point extracts and publishes load information for multiple basic service sets, relieving wireless devices from the complexity of performing detailed scanning and analysis across multiple access points while maintaining high selection precision.
3Measurement precision
If access points provide detailed load information for multiple basic service sets, then network selection accuracy is improved, but information overhead increases
Solution Approach 1:
The patent applies partial action by selectively including load information for multiple basic service sets in beacon and probe response frames based on relevance and current network conditions. Rather than providing exhaustive information for all possible service sets, the system provides sufficient load information to enable accurate network selection while controlling the amount of information overhead through targeted inclusion of pertinent load data.
Data Source
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AI summary
This disclosure relates to methods for providing detailed basic service set load information in a wireless local area network. A wireless device may receive basic service set load information including one or more of overlapping basic service set channel utilization information, in basic service set channel utilization information for a basic service set, or load history information for the basic service set. The wireless device may select a basic service set with which to associate based at least in part on the load information for the basic service set.