Wireless LAN Relay Device Frame Transmission
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Solution Overview
Problem
The efficiency of wireless local area network (WLAN) systems deteriorates as the distance between devices increases, leading to reduced communication efficiency and higher power consumption in terminals.
Innovation Solution
The implementation of a method that includes transmitting probe and association frames between terminals and access points, utilizing relay devices to enhance data transmission efficiency by optimizing the association process and acknowledging data frames, thereby improving signal quality and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If direct communication between terminal and access point is used, then communication speed is maintained, but communication efficiency deteriorates as distance increases
Solution Approach 1:
The patent introduces a relay device as an intermediary between the terminal and access point. The relay device receives frames from the terminal and forwards them to the access point, enabling communication over extended distances while maintaining communication efficiency. This mediator approach resolves the contradiction by allowing high-speed communication through the relay without the direct distance limitation between terminal and access point.
2Productivity
If relay devices are introduced to extend service area, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The relay device is designed to perform multiple functions: it acts as both a terminal (associating with access points) and a relay (forwarding frames between terminals and access points). This multi-functionality allows the system to extend service area and improve transmission efficiency without requiring separate dedicated relay infrastructure, thereby limiting the increase in device complexity.
Solution Approach 2:
The relay device automatically performs frame forwarding based on received frames from terminals. The system enables itself to extend coverage area through the relay's autonomous operation of receiving and transmitting frames without requiring complex external control mechanisms, thus improving productivity while keeping complexity manageable.
3Area of stationary object
If relay mode is implemented, then service area is extended, but power consumption in terminals increases
Solution Approach 1:
The relay device serves as an intermediary that handles the power-intensive communication tasks. Terminals can communicate with the relay over shorter distances, reducing their power consumption compared to direct long-distance communication with the access point. The relay absorbs the energy burden of extended range communication, allowing terminals to conserve power while still accessing the extended service area.
Data Source
AI summary
Disclosed are a method and a device for transmitting and receiving data in a wireless LAN system. A connection method performed in a terminal comprises the steps of: transmitting a probe request frame; receiving, from a main-access point, a probe response frame which is a response to the probe request frame; and transmitting, to the main-access point, an ACK frame which is a response to the probe response frame if it is determined that an operation is performed in an uplink relay mode on the basis of information included in the probe response frame. Thus, the wireless transmission efficiency of a wireless LAN system is capable of being improved.