SD-WAN Edge Adaptive Path Control for 5G Application Quality
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Solution Overview
Problem
Conventional wireless communication systems lack real-time transmission control technologies that can monitor and improve the quality of individual application layers in wireless networks, especially in 5G networks, where network slicing is introduced but not sufficient for managing multiple services with similar characteristics and ensuring application layer quality.
Innovation Solution
A software-defined wide area network (SD-WAN) technology is applied to 4G & 5G wireless networks, enabling real-time adaptive multilink control by generating multiple IP links between the SD-WAN edge and gateway, monitoring packet loss and throughput, and selecting optimal paths based on policy and quality metrics to ensure application quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing is introduced in 5G wireless networks, then service differentiation and resource allocation are improved, but the system cannot sufficiently manage multiple services with similar characteristics and ensure application layer quality
Solution Approach 1:
The patent segments the transmission path into multiple IP links (primary and secondary paths) and divides packet transmission into different modes (single-path and multi-path). This segmentation allows fine-grained control over individual application layer packets while maintaining service differentiation, resolving the contradiction between service variety and application quality assurance.
Solution Approach 2:
The patent implements dynamic path selection and switching based on real-time packet loss and throughput monitoring. The system can switch between single-path and multi-path transmission modes dynamically, and select optimal paths based on current network conditions, enabling reliable application layer quality control while maintaining service adaptability.
2Device complexity
If conventional wireless communication systems are used, then system simplicity is maintained, but real-time transmission control and application layer quality monitoring are lacking
Solution Approach 1:
The patent creates a universal path control mechanism that handles multiple functions: packet loss monitoring, throughput measurement, path selection, and transmission mode switching. By integrating these functions into a unified SD-WAN-based control system, the patent achieves real-time transmission control without proportionally increasing system complexity.
Solution Approach 2:
The patent implements a feedback loop where packet loss and throughput information from IP links is continuously monitored and fed back to the SD-WAN controller. This feedback enables real-time adaptive path control, allowing the system to adjust transmission parameters dynamically based on actual performance data while maintaining manageable system architecture.
3Device complexity
If single IP link transmission is used, then system complexity is minimized, but packet loss and throughput optimization are insufficient
Solution Approach 1:
The patent applies local quality control by monitoring and optimizing individual IP links based on their specific packet loss and throughput characteristics. Each link is evaluated independently, and transmission parameters are adjusted locally for each link rather than applying uniform policies, thereby optimizing performance without requiring complex centralized control of all links simultaneously.
Data Source
AI summary
The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A device in a wireless communication system, which is a software defined (SD)-wide area network (WAN) edge device, is provided. The device includes at least one transceiver and at least one processor, wherein the at least one processor is configured to generate a plurality of wireless internet protocol (IP) links between the SD-WAN edge and an SD-WAN gateway (GW), and select at least one wireless IP link from among the plurality of wireless IP links on the basis of a policy and wireless quality, wherein the wireless quality includes information on a packet loss of each of the plurality of wireless IP links and information on a throughput (Tput) of each of the plurality of wireless IP links.