WLAN Access Point Simultaneous Uplink Downlink Transmission
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Solution Overview
Problem
Existing wireless local area network (WLAN) systems have low throughput due to the alternating use of transmit and receive paths, resulting in inefficient usage of channel resources.
Innovation Solution
A method and device that allow simultaneous uplink and downlink transmissions on different channels by using multiple transmit and receive paths, enabling concurrent data transmission and reception without increasing system complexity or costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time division multiplex is used for uplink and downlink transmission on one channel, then the system structure is simple and easy to implement, but the throughput is low due to alternating transmission paths
Solution Approach 1:
The patent transitions from time-division duplexing (TDD) to frequency-division duplexing (FDD) by introducing a frequency dimension. Multiple access points operate on different frequency channels simultaneously, allowing parallel uplink and downlink transmissions. This dimensional change enables the system to achieve higher throughput by utilizing frequency diversity while maintaining relatively simple time-synchronized operation.
Solution Approach 2:
The patent segments the wireless network into multiple access points operating on different frequency channels. Each access point independently manages its own transmit and receive paths on dedicated frequencies, allowing simultaneous operations across the network. This segmentation enables parallel processing and increases overall system throughput without requiring complex coordination between individual transmit-receive pairs.
2Productivity
If transmit and receive paths work alternately, then the system is easy to control and manage, but the usage efficiency of transmit and receive paths is low
Solution Approach 1:
The patent makes frequency channels universal by allowing different access points to use the same time resources for different purposes. A frequency channel that is downlink for one access point can simultaneously be uplink for another access point. This multi-functionality of frequency resources maximizes the utilization of transmit and receive paths across the network while maintaining simple time-synchronized control.
Solution Approach 2:
The patent creates multiple copies of the transmission system operating in parallel on different frequency channels. Each access point has its own independent transmit and receive paths that operate simultaneously on dedicated frequencies. This copying approach allows the system to achieve high path utilization through parallel operations while keeping each individual path's control simple and manageable.
Data Source
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AI summary
Embodiments of the present invention provide a data transmission method, a device, and a transceiver. The method is applied to a data transmission method for an access point. A transceiver of the access point includes m transmit paths and n receive paths. The method is applied to a wireless local area network WLAN, and includes: sending, by the access point, downlink data to at least one first station on a first channel by using at least one of the m transmit paths within a first time; and receiving, by the access point, uplink data sent by at least one second station on a second channel, by using at least one of the n receive paths within the first time; where a start time point and an end time point at which the access point sends the downlink data are respectively the same as those at which the access point receives the uplink data. In the embodiments of the present invention, uplink transmission and downlink transmission can be performed simultaneously on different channels, so that a transmit path and a receive path work simultaneously, increasing usage of the transmit path and the receive path and increasing a throughput of a system.