Wi-Fi Backhaul Routing for Cable-Free Two-Box WLAN Setups
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Solution Overview
Problem
The reliance on Ethernet connectivity in two-box WLAN setups restricts the positioning of the home gateway device, leading to suboptimal Wi-Fi performance and the need for additional Wi-Fi extenders, while existing solutions are costly and inefficient.
Innovation Solution
Implementing a dedicated Wi-Fi backhaul connection between the WAN adaptor and home gateway devices, with traffic routing optimized through slowpath and fastpath processing to enable seamless traffic management without bridging, allowing the home gateway device's functionality to be duplicated on the WAN adaptor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Ethernet connectivity is used to connect the WAN adaptor and home gateway, then the connection is stable and reliable, but the positioning of the home gateway is restricted and Wi-Fi performance becomes suboptimal
Solution Approach 1:
The patent replaces the mechanical Ethernet cable connection with a wireless Wi-Fi backhaul connection between the WAN adaptor and home gateway. This substitution eliminates the physical constraint of cable length and routing, allowing the home gateway to be positioned optimally for Wi-Fi coverage while maintaining a stable wireless connection for control and management traffic.
2Ease of operation
If the home gateway is relocated to improve Wi-Fi coverage, then Wi-Fi performance improves, but the need for long Ethernet cables or structured wiring increases
Solution Approach 1:
The patent replaces the need for long Ethernet cables with a wireless Wi-Fi backhaul connection. The WAN adaptor and home gateway communicate wirelessly, eliminating the constraint of cable length and the need for structured wiring infrastructure, thereby enabling flexible placement of the home gateway for optimal Wi-Fi coverage.
3Area of stationary object
If a Wi-Fi extender is deployed to improve coverage, then Wi-Fi reach is extended, but the device complexity and cost increase
Solution Approach 1:
The patent makes the WAN adaptor multi-functional by enabling it to provide Wi-Fi access directly in addition to its existing function of providing wired Ethernet backhaul. This eliminates the need for separate Wi-Fi extenders, as the WAN adaptor itself can serve as a Wi-Fi access point, thereby reducing device complexity while extending coverage.
4Adaptability or versatility
If the 2-box solution is used to isolate broadband and Wi-Fi technologies, then technology independence is improved, but the overall cost increases by 20%
Solution Approach 1:
The patent enhances the functionality of the WAN adaptor by enabling it to provide both wired Ethernet backhaul and Wi-Fi access. This multi-functionality reduces the need for additional dedicated Wi-Fi equipment, thereby lowering the overall solution cost while maintaining the architectural benefit of technology isolation between broadband and Wi-Fi components.
Data Source
AI summary
Optimizing traffic routing operations in a two-box WLAN setup including a gateway device and a WAN adaptor device. The WAN adaptor device receives initial packets of a traffic flow from a client device, and sends the initial packets to the gateway device for slowpath (SP) processing. The gateway device creates fastpath (FP) processing rules for the traffic flow, including traffic modifications resulting from the SP processing, and sends the FP processing rules to the WAN adaptor device. The WAN adaptor device applies the FP processing rules to perform the traffic modifications on subsequent packets of the second traffic flow. The FP processing rules enable the WAN adaptor device to forward the subsequent packets of the traffic flow to the client device directly, without bridging to the gateway device for FP processing.