Wireless Terminal Uplink Multi-User Scheduling via Trigger Frames
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently scheduling simultaneous transmission of multiple terminals in high-density environments, leading to suboptimal resource utilization and performance degradation.
Innovation Solution
A wireless communication method and terminal that employ a processor to select an access category for transmitting a trigger frame, perform a backoff procedure, and transmit the trigger frame when a backoff counter expires, thereby efficiently scheduling uplink and downlink multi-user transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional wireless communication scheduling methods are used in high-density environments, then system complexity is reduced, but resource utilization efficiency deteriorates and performance degrades
Solution Approach 1:
The patent segments the scheduling process into distinct phases: uplink multi-user transmission scheduling using trigger frames, downlink multi-user transmission scheduling, and single-user transmission scheduling. Each phase has dedicated resource allocation mechanisms, allowing the system to manage complex high-density environments through structured division of scheduling tasks rather than monolithic control
Solution Approach 2:
The access point performs preliminary scheduling actions by sending trigger frames to multiple terminals simultaneously, pre-allocating uplink resources before actual data transmission. This advance scheduling preparation enables efficient resource utilization in high-density environments by resolving contention issues before they affect throughput
2Productivity
If simultaneous transmission of multiple terminals is scheduled without advanced scheduling mechanisms, then system complexity is low, but transmission efficiency and resource utilization deteriorate
Solution Approach 1:
The access point acts as an intermediary that coordinates simultaneous transmissions between multiple terminals. It sends trigger frames to initiate uplink multi-user transmissions and manages downlink multi-user transmissions, mediating resource allocation and timing to enable efficient simultaneous communications without terminal-to-terminal interference
Solution Approach 2:
The scheduling system dynamically adapts to varying channel conditions and traffic demands by adjusting resource allocation for multi-user transmissions. The access point can flexibly switch between uplink and downlink multi-user modes, and adjust the number of terminals participating in simultaneous transmissions based on real-time system state
Data Source
AI summary
The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling uplink multi-user transmission.To this end, provided are a base wireless communication terminal, including: a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the transceiver, wherein the processor selects an access category for transmitting a trigger frame which solicits an uplink multi-user transmission, performs a backoff procedure for transmitting the trigger frame based on the selected access category, and transmits the trigger frame when a backoff counter of the backoff procedure expires and a wireless communication method using the same.