Wireless Terminal TIM and Trigger Frame Collision Reduction
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Solution Overview
Problem
In high-density wireless communication environments, existing technologies face challenges in efficiently operating data transmission and reception while minimizing power consumption and reducing the likelihood of data transmission collisions among multiple terminals.
Innovation Solution
A wireless communication method and terminal that utilize a traffic indicator map (TIM) and trigger frames to manage data transmission, allowing multiple terminals to perform distributed data transmission using multiple channels, thereby reducing collision likelihood and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals transmit data simultaneously in a high-density environment, then data transmission throughput is improved, but collision probability increases
Solution Approach 1:
The patent segments the transmission medium into multiple virtual channels by dividing the frequency spectrum into multiple bandwidths (e.g., 20MHz, 40MHz, 80MHz, 160MHz). This allows multiple terminals to transmit data simultaneously on different virtual channels without collision, while maintaining high throughput. The segmentation is achieved through channel bonding and virtual channel assignment mechanisms.
Solution Approach 2:
The patent introduces a virtual dimension to the physical transmission medium by creating multiple virtual channels through frequency division. This dimensional transformation allows simultaneous transmissions without physical interference, converting a one-dimensional collision-prone medium into a multi-dimensional collision-free transmission space.
2Use of energy by moving object
If terminals operate in power saving mode, then power consumption is reduced, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements preliminary action by having the access point transmit a Trigger Frame before actual data transmission. This Trigger Frame notifies power-saving terminals of upcoming transmissions and allows them to wake up in advance or prepare reception buffers, reducing the need for continuous monitoring while maintaining transmission efficiency.
Solution Approach 2:
The patent employs feedback mechanisms where terminals send PS-Poll frames to the access point to indicate their reception status and power state. This feedback loop allows the access point to dynamically adjust transmission schedules, ensuring efficient data delivery while optimizing power consumption by avoiding unnecessary wake-ups or retransmissions.
Data Source
AI summary
The present invention relates to a wireless communication method for power saving and a wireless communication terminal using the same, and more particularly, to a wireless communication method for efficiently operating data transmission/reception of each terminal in a high-density environment and a wireless communication terminal using the same.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 base wireless communication terminal, wherein the processor is configured to: transmit a traffic indicator map (TIM) including identifier information of at least one station which is to receive downlink data, transmit a trigger frame triggering a PS-Poll transmission of the at least one station indicated by the TIM, receive at least one PS-Poll transmitted in response to the trigger frame, and transmit downlink data to a station that transmitted the PS-Poll and a wireless communication method using the same.