Wireless Network Bridging via Frequency-Division Duplexing
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Solution Overview
Problem
The transmission performance of wireless networks decreases exponentially as the bridging level increases due to the half-duplex communication method used in existing wireless network bridging technologies, leading to signal interference and reduced efficiency.
Innovation Solution
The method employs alternate use of different 5G and 2.4G transceiver units and channels across wireless network transmission devices to establish distinct uplink and downlink channels, preventing signal interference and maintaining transmission performance by interlacing frequency bands for serial connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If half-duplex communication method is used in wireless network bridging, then device complexity is reduced, but transmission performance decreases exponentially as bridge level increases
Solution Approach 1:
The patent divides the communication channels into separate uplink and downlink channels using different frequency bands. Each wireless network transmission device is configured with dedicated uplink channels and downlink channels, allowing simultaneous bidirectional communication without self-interference. This channel segmentation resolves the half-duplex limitation while maintaining manageable device complexity.
Solution Approach 2:
The patent introduces frequency dimension by using different frequency bands for uplink and downlink communications. Instead of time-division multiplexing in a single frequency band, the system operates in multiple frequency dimensions simultaneously, enabling full-duplex communication and preventing the exponential performance degradation that occurs in multi-bridge configurations.
2Area of stationary object
If multiple wireless networks are connected in series to extend coverage, then network coverage area increases, but signal interference increases and transmission performance decreases
Solution Approach 1:
The patent assigns different frequency bands to uplink and downlink channels at each bridge level. This frequency segmentation ensures that signals traveling in opposite directions do not interfere with each other, even when multiple bridges are connected in series. Each bridge can extend coverage while maintaining signal quality through this frequency-based isolation.
Solution Approach 2:
The patent introduces channel information as an intermediary mechanism that coordinates frequency band usage across multiple bridges. Each device scans and obtains channel information from adjacent devices, ensuring that uplink and downlink channels are properly configured to avoid interference. This intermediary coordination enables seamless multi-bridge connections without signal degradation.
3Device complexity
If same channels are used for uplink and downlink in wireless network transmission, then device complexity is reduced, but signal interference occurs and transmission reliability decreases
Solution Approach 1:
The patent applies different frequency band qualities to different communication directions. Uplink channels use one set of frequency bands while downlink channels use another set, optimizing each direction's transmission characteristics. This local quality differentiation prevents self-interference and improves transmission reliability without significantly increasing device complexity, as the frequency allocation is automatically managed through channel information exchange.
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AI summary
A wireless network bridging method and a wireless network transmission device using the same are provided. The wireless network bridging method includes the following steps. A first wireless network transmission device sets a downlink channel and at least one connection channel connected to at least one user equipment. A second wireless network transmission device sets an uplink channel. The second wireless network transmission device sets a downlink channel according to a channel information of the first wireless network transmission device. The downlink channel and the uplink channel of the second wireless network transmission device are different. The second wireless network transmission device sets at least one connection channel connected to at least one user equipment according to the channel information of the first wireless network transmission device. The connection channels of the second wireless network transmission device and the first wireless network transmission device are different.