IEEE 802.11ax Measurement Apparatus Resource Unit Selection
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Solution Overview
Problem
There is a lack of methods to easily and definitively designate sub-channels for measurement in IEEE 802.11ax wireless LAN communication, which uses orthogonal frequency division multiple access (OFDMA), where multiple users share the same frequency bandwidth.
Innovation Solution
A measurement apparatus with a display unit and control unit that displays resource unit graphic forms illustrating frequency bandwidths, allowing users to select and differentiate between unselected, selected, and pre-selection states, enabling easy identification and designation of desired measurement targets within the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If OFDMA is adopted to allow multiple users to share frequency bandwidth, then communication efficiency is improved, but it becomes difficult to designate and identify specific sub-channels for measurement
Solution Approach 1:
The patent segments the frequency bandwidth into distinct resource units (sub-channels) and provides separate display elements for each unit. This segmentation allows users to easily identify and select specific measurement targets among multiple divided frequency resources, resolving the difficulty of designating measurement targets in OFDMA systems.
Solution Approach 2:
The patent adds a visual display dimension to represent resource units in the frequency bandwidth. By displaying resource units as graphical elements arranged along a frequency axis, the system transforms the abstract frequency division into a visual spatial representation, making it easy to identify and select specific sub-channels for measurement.
2Adaptability or versatility
If resource units are divided and allocated to multiple users, then frequency bandwidth utilization is improved, but measurement target identification becomes complex
Solution Approach 1:
The patent uses different display states (differentiated visual appearances) to represent different selection states of resource units. By visually distinguishing selected resource units from unselected ones through display state changes, the system simplifies measurement target identification even when multiple resource units are divided and allocated.
3Device complexity
If no sub-channel designation method is provided, then system simplicity is maintained, but measurement precision and target specificity are insufficient
Solution Approach 1:
The patent performs preliminary selection of measurement targets by allowing users to visually select and designate specific resource units before measurement begins. The control unit stores the selected resource unit information in advance, ensuring precise measurement target specification while maintaining a simple operational interface.
Data Source
AI summary
There is provided a measurement apparatus capable of easily and definitely designating a desired measurement target when measuring communication in IEEE 802.11ax. There is provided a control unit that selectably displays a plurality of resource unit display graphic forms which are graphic forms illustrating resource units arranged in a frequency bandwidth of a channel on a display unit, selects a resource unit which is the measurement target by selecting at least one resource unit display graphic form of the plurality of resource unit display graphic forms, and varies a display of the resource unit display graphic form between an unselected state, a selected state, and a state before selection different from each other, in a case where communication in accordance with a standard of IEEE 802.11ax is measured.