MU-MIMO Access Point Dynamic Power Adjustment for Unequal Packet Lengths
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in managing unequal packet lengths in MU-MIMO frames, leading to suboptimal resource allocation and increased interference, as they either pad shorter packets with dummy data or shorten longer packets, resulting in transmission inefficiencies.
Innovation Solution
The system dynamically adjusts transmission resources, including power and modulation and coding schemes, based on signal-to-noise ratios to equalize packet lengths without padding or shortening, by reallocating resources to match the transmission duration of the longest packet, thereby optimizing MU-MIMO capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If shorter packets are padded with dummy data to equalize packet lengths, then packet length equality is improved, but transmission efficiency deteriorates due to wasted resources
Solution Approach 1:
The patent changes the transmission parameters (MCS and power) of shorter packets to extend their transmission duration dynamically, matching the longest packet duration without adding dummy data. This transforms the packet transmission problem from static length equalization to dynamic parameter adjustment, achieving both length equality and efficiency.
2Stability of the object's composition
If longer packets are shortened to match the shortest packet length, then packet length equality is improved, but data throughput deteriorates
Solution Approach 1:
Instead of reducing packet length, the patent adjusts transmission parameters (MCS and power) of shorter packets to match the longest packet's duration. This preserves all data while achieving length equality through parameter optimization rather than data reduction.
3Device complexity
If transmission resources are allocated equally to all users, then resource allocation simplicity is improved, but overall MU-MIMO capacity deteriorates due to unequal packet lengths
Solution Approach 1:
The patent implements dynamic resource allocation where transmission parameters (MCS and power) are adjusted based on each user's packet length and channel conditions. This dynamic approach allows the system to adapt to varying packet lengths and maximize overall capacity rather than using static equal allocation.
Solution Approach 2:
The system dynamically changes transmission parameters (MCS index and power levels) based on packet length comparisons and channel conditions. By adjusting these parameters, the system optimizes resource allocation to match transmission durations and maximize overall MU-MIMO capacity.
4Stability of the object's composition
If dummy data is added to shorter packets, then packet length equality is improved, but interference management deteriorates due to increased transmission time
Solution Approach 1:
The patent adjusts transmission parameters (MCS and power) to extend shorter packet transmissions to match the longest packet duration. This dynamic parameter adjustment achieves length equality without adding dummy data, thereby avoiding the increased interference that would result from extended transmissions with padding.
Data Source
AI summary
In some aspects, the disclosure is directed to methods and systems for transmitting packets (including but not limited to MU-MIMO packets). An access point communicating wirelessly with a plurality of devices can determine that a first packet for a first device of the plurality of devices has a first transmission duration. The access point can determine that a second packet for a second device of the plurality of devices has a second transmission duration shorter than the first transmission duration. The access point can adjust, based on the determination, a transmission power or a modulation and coding scheme to transmit the second packet during a third transmission duration. The third transmission duration can be greater than the second transmission duration.