Wireless LAN Channel Selection for Uplink Interference Management
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Solution Overview
Problem
In wireless LAN systems, managing industrial use cases with uplink traffic as the main communication can lead to a decrease in throughput when using management methods designed for public use scenarios, where downlink traffic is predominant.
Innovation Solution
A wireless communication management apparatus that includes a determination unit to assess interference relationships between bandwidth and channels, an evaluation unit to calculate an evaluation value for each combination, and a selection unit to choose the optimal combination based on these values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a management method designed for public use wireless LAN (downlink traffic predominant) is applied to industrial use wireless LAN (uplink traffic main communication), then the management complexity is reduced, but the throughput decreases
Solution Approach 1:
The invention changes the management parameters from base-station-centric to terminal-centric. Specifically, it changes which entity generates control information (from base station to terminal), which entity selects bandwidth and channel (from base station to terminal), and how interference is evaluated (from base station environment to terminal environment). These parameter changes enable the system to adapt to uplink traffic patterns while maintaining manageable complexity through standardized protocols.
2Device complexity
If control information is generated only on the basis of base station wireless environment (public use approach), then the control information generation is simplified, but the throughput in uplink traffic scenarios decreases
Solution Approach 1:
The invention inverts the traditional control information generation approach. Instead of the base station generating control information based on its own environment, the terminal generates control information based on its wireless environment. This inversion allows the system to optimize for uplink traffic where the terminal is the primary data source, while the base station simply forwards these control information to manage downlink transmissions.
3Device complexity
If bandwidth and channel selection is based on base station environment only, then the selection process is simplified, but the interference management for multiple terminals deteriorates
Solution Approach 1:
The invention segments the bandwidth and channel selection process into terminal-specific evaluations. Each terminal independently evaluates its own wireless environment and selects optimal bandwidth and channel combinations based on its specific interference conditions. This segmentation allows each terminal to optimize its uplink transmission, while the base station coordinates these selections to manage overall system interference and resource allocation.
Data Source
AI summary
A wireless communication management apparatus includes a determination unit, an evaluation unit, and a selection unit. The determination unit determines an interference relationship of a combination of bandwidth and channel on the basis of wireless environment information collected from one or more terminals capable of wireless communication with a base station. The evaluation unit calculates an evaluation value for each combination of bandwidth and channel on the basis of the interference relationship. The selection unit selects one combination from the combinations of bandwidth and channel on the basis of the evaluation value.