Access Point MU-MIMO Bandwidth Allocation for Mixed-Bandwidth Stations
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Solution Overview
Problem
In wireless communication systems with diverse station device operating bandwidths, the use of multi-user transmission results in inefficient bandwidth utilization due to mismatched bandwidths between access point and station devices, leading to reduced spectrum efficiency.
Innovation Solution
Implementing a multi-user multiple-input multiple-output (MU-MIMO) operating mode that adapts to the individual operating bandwidths of each station device, enabling unequal bandwidth transmissions to optimize spectrum usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-user transmission is performed with a common bandwidth, then all station devices can participate in the transmission, but station devices with smaller operating bandwidths waste bandwidth resources
Solution Approach 1:
The patent segments the bandwidth allocation by dividing the set of station devices into different groups based on their operating bandwidth capabilities. Each group is allocated appropriate bandwidth resources, allowing station devices with smaller operating bandwidths to use only the bandwidth they need rather than being forced to use a common larger bandwidth, thereby reducing bandwidth waste and improving spectrum efficiency.
Solution Approach 2:
The patent applies local quality by allowing different station devices to operate with different bandwidth allocations according to their individual capabilities. Instead of applying a uniform bandwidth to all station devices, the system tailors the bandwidth allocation to each station device's operating bandwidth, ensuring that each device uses bandwidth locally optimized for its capabilities and reducing overall bandwidth waste.
2Productivity
If a common bandwidth is used for all station devices, then bandwidth allocation is simplified, but spectrum efficiency is reduced due to bandwidth waste
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the bandwidth assigned to each station device or group can be adjusted based on their operating bandwidth capabilities and transmission needs. This dynamic approach allows the system to optimize spectrum efficiency by matching bandwidth allocation to actual requirements while maintaining manageable complexity through automated group formation and bandwidth assignment mechanisms.
Solution Approach 2:
The patent changes the bandwidth parameter allocation from a fixed common value to variable values based on station device operating bandwidths. By allowing the bandwidth parameter to vary according to device capabilities and transmission requirements, the system improves spectrum efficiency without requiring complex manual configuration, as the bandwidth parameters are automatically adjusted based on device characteristics.
Data Source
AI summary
A wireless communication method includes: transmitting, by an access point device, first indication information to a plurality of station devices, the first indication information being used to indicate whether to enable an MU-MIMO operating mode based on operating bandwidths of the plurality of station devices, where in a case where the MU-MIMO operating mode based on the operating bandwidths of the plurality of station devices is enabled, a bandwidth for uplink transmission and/or downlink transmission of each station device in the plurality of station devices is an operating bandwidth of the station device.