Wireless Station Response Message Range Extension
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Solution Overview
Problem
Wireless communication devices face range extension challenges due to asymmetric communication capabilities between access points and station devices, where station devices may not transmit signals with sufficient power to overcome path loss, leading to unsuccessful communication.
Innovation Solution
Configuring station devices to transmit at least two response messages in different wireless signals with varying formats, power levels, bandwidths, or frequencies to improve the likelihood of successful reception by the access point, thereby extending the communication range and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If station devices transmit with higher power to overcome path loss, then communication range is extended, but device complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic transmit power adjustment where the access point sends a power adjustment indication to the station device, which then modifies its transmit power level accordingly. This allows the station device to adapt its transmission power dynamically based on channel conditions and distance from the access point, extending communication range without requiring the device to always operate at maximum power, thus avoiding unnecessary complexity and power consumption.
Solution Approach 2:
The patent changes the power parameter of the wireless signal by having the access point determine and communicate a power adjustment indication to the station device. The station device then adjusts its transmit power based on this indication, allowing flexible modification of the transmission parameter to overcome path loss and extend range without permanently increasing device complexity.
2Length of stationary object
If station devices transmit with higher power to overcome path loss, then communication range is extended, but power consumption increases
Solution Approach 1:
The system implements dynamic power adjustment where the station device only increases transmit power when the access point sends a power adjustment indication. This dynamic approach allows the device to maintain lower power consumption during normal operation while extending range temporarily when needed, avoiding continuous high power consumption.
Solution Approach 2:
The transmit power parameter is adjusted on-demand based on the power adjustment indication from the access point rather than being permanently increased. This allows the station device to extend communication range when necessary while minimizing overall power consumption by returning to lower power levels after the adjustment period.
3Length of stationary object
If the access point uses higher sensitivity receiver to detect weak signals, then communication range is extended, but device complexity increases
Solution Approach 1:
Instead of making the station device more complex with higher sensitivity receivers, the patent inverts the approach by having the access point (which already has higher capabilities) send power adjustment indications to control the station device's transmit power. This shifts the complexity burden to the access point rather than the station device, extending range without increasing station device complexity.
Solution Approach 2:
The access point acts as an intermediary that controls the transmit power of the station device through power adjustment indications. Rather than requiring the station device to have high sensitivity or high power capabilities, the access point mediates the communication by managing the power levels, thus extending range without increasing station device complexity.
Data Source
AI summary
In some aspects, the disclosure is directed to methods and systems for extending a range of wireless communication. In one aspect, a first station device from one or more stations receives a trigger frame comprising a predetermined bit from an access point. The first station device may transmit to the access point a first response message in a first format during a first time period, in response to detecting the predetermined bit in the trigger frame. The first station device may transmit to the access point, a second response message in a second format during a second time period, in response to detecting the predetermined bit in the trigger frame. The first station device may receive, from the access point, a downlink frame during a third time period after the first time period and the second time period.