ANQP Group Versioning for Wi-Fi Resource Optimization
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Solution Overview
Problem
In Wi-Fi systems, stations frequently transmit unnecessary ANQP queries, consuming resources and bandwidth, as they lack a mechanism to determine when network attributes have changed, leading to inefficient network selection and re-selection processes.
Innovation Solution
Implementing a common ANQP group versioning system where a unique version is associated with a common ANQP group, allowing stations to compare versions and transmit queries only when changes occur, thereby reducing unnecessary queries and conserving resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If stations frequently transmit ANQP queries to obtain network attributes, then network attribute information can be obtained, but resource consumption and bandwidth usage increase
Solution Approach 1:
The system performs preliminary action by providing stations with a common ANQP group version number that indicates whether network attributes have changed. This allows stations to determine in advance whether an ANQP query is necessary, preventing unnecessary queries and reducing resource consumption while ensuring network attribute information is obtained only when changes occur.
2Loss of information
If stations transmit ANQP queries frequently to ensure current network attributes, then network attribute currency is maintained, but bandwidth consumption increases
Solution Approach 1:
The system implements feedback by broadcasting the common ANQP group version number to stations, which then use this version information to determine whether network attributes have changed. This feedback mechanism allows stations to maintain current network attribute information by querying only when necessary, thereby reducing bandwidth consumption while ensuring attribute currency.
3Loss of information
If stations transmit ANQP queries to check for network attribute changes, then network attribute updates are obtained, but unnecessary queries are transmitted
Solution Approach 1:
The system performs preliminary action by providing stations with version number information before stations transmit ANQP queries. This allows stations to pre-determine whether network attributes have changed based on version comparison, eliminating unnecessary query transmissions and reducing the time lost to redundant communication while ensuring network attribute updates are obtained when needed.
Data Source
AI summary
A system and method of ANQP querying using a common ANQP group version. One embodiment of the method includes associating an original common ANQP group version with a common ANQP group, transmitting a message containing the original common ANQP group version to at least one station, associating a new common ANQP group version with the common ANQP group when an element therein is changed, and transmitting another message containing the new common ANQP group version to the at least one station.