Wireless Terminal Multi-User Uplink Trigger Frame Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In high-density wireless LAN environments, existing technologies face challenges in efficiently scheduling simultaneous uplink transmissions from multiple terminals, leading to potential data collisions and instability in data communication.
Innovation Solution
A wireless communication method and terminal that utilize a trigger frame with a predetermined field indicating the presence of additional trigger frames, allowing terminals to manage their awake or doze states and perform multi-user uplink transmissions efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals perform simultaneous uplink transmissions in high-density wireless LAN environments, then the data transmission speed and network throughput are improved, but data collisions occur and communication stability deteriorates
Solution Approach 1:
The access point performs preliminary scheduling of uplink transmissions by allocating specific time slots and frequency resources to multiple terminals before actual data transmission. This preliminary resource allocation prevents data collisions while enabling simultaneous transmissions, thus improving both throughput and reliability
Solution Approach 2:
The available time and frequency resources are segmented into distinct allocation units, with each terminal assigned specific segments for uplink transmission. This segmentation allows multiple terminals to transmit simultaneously without collision by using different resource segments, resolving the contradiction between high throughput and communication stability
2Speed
If terminals continuously monitor the channel for uplink transmission opportunities, then the responsiveness to transmission requests is improved, but energy consumption increases
Solution Approach 1:
Terminals transition between active monitoring and sleep states in periodic cycles, waking up only at scheduled transmission opportunities indicated by the access point. This periodic action maintains responsiveness to transmission requests while significantly reducing energy consumption during non-transmission periods
Solution Approach 2:
The access point provides scheduling information and transmission opportunities to terminals, allowing terminals to self-manage their wake/sleep cycles based on received scheduling directives. This self-service mechanism enables terminals to optimize energy consumption while maintaining system responsiveness
3Adaptability or versatility
If the access point sends multiple separate trigger frames for multi-user uplink transmissions, then the resource allocation flexibility is improved, but the overhead and complexity increase
Solution Approach 1:
Multiple trigger frames that would otherwise be sent separately are merged into a single composite trigger frame containing scheduling information for multiple terminals. This merging reduces overhead and complexity while maintaining resource allocation flexibility through embedded terminal-specific allocation fields within the unified frame structure
Data Source
AI summary
The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling simultaneous uplink transmissions of a plurality of terminals. To this end, provided are a wireless communication terminal, the terminal including: a transceiver; and a processor, wherein the processor receives, through the transceiver, a trigger frame transmitted by a base wireless communication terminal, and performs a multi-user uplink transmission based on the received trigger frame, wherein the trigger frame includes a predetermined field indicating whether an additional trigger frame is present or not, and a wireless communication method using the same.