URSP Policy for Wi-Fi Multi-Link Traffic Routing
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Solution Overview
Problem
Current User Equipment Route Selection Policies (URSP) cannot effectively bind applications to Wi-Fi links, lacking precise characterization of non-3GPP access links, and are insufficient for managing multi-link capabilities in Wi-Fi access.
Innovation Solution
The proposed solution defines a comprehensive User Equipment Route Selection Policy (URSP) based on Wi-Fi multi-link operation, enabling a singular application policy to dictate traffic exchange among multiple radio access technologies like 5G and Wi-Fi 6/7, and specifies extensions for activating/deactivating Wi-Fi multi-link based on URSP policy elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional URSP is used for route selection, then policy management is simple, but it cannot effectively bind applications to Wi-Fi links or manage multi-link capabilities
Solution Approach 1:
The URSP rule structure is segmented into distinct components including rule ID, application identifier, traffic routing rules, and Wi-Fi specific parameters. This segmentation allows the policy to bind applications to specific Wi-Fi links while maintaining manageable complexity through modular organization of policy elements.
Solution Approach 2:
The patent extends traditional URSP by adding a new dimension for Wi-Fi multi-link operation parameters. This includes link identification, link preference indicators, and multi-link specific routing rules, transforming the policy structure from single-link to multi-link capability without completely redesigning the base framework.
2Ease of operation
If multi-link operation is implemented, then traffic routing control is enhanced, but policy management complexity increases
Solution Approach 1:
The network controller pre-configures URSP rules with Wi-Fi multi-link parameters before user equipment needs to route traffic. This preliminary action includes pre-establishing link preferences, pre-identifying suitable applications for multi-link operation, and pre-defining traffic routing patterns, thereby simplifying real-time policy management while maintaining enhanced routing control.
Solution Approach 2:
The network controller acts as an intermediary that manages the complexity of Wi-Fi multi-link policies on behalf of user equipment. It receives capability information from UE, determines appropriate URSP rules, and transmits them to UE, thereby shielding user equipment from policy management complexity while enabling sophisticated traffic routing control.
3Productivity
If Wi-Fi multi-link capability is supported, then network performance is improved, but characterization of non-3GPP access links becomes more difficult
Solution Approach 1:
The patent introduces specific parameters for characterizing Wi-Fi multi-link connections including link ID, link type identification, bandwidth indicators, and latency characteristics. These parameter changes enable systematic detection and measurement of non-3GPP access links, transforming the difficulty of link characterization into a structured parameter-based approach that improves network performance.
Solution Approach 2:
The patent replaces manual or complex heuristic-based link characterization with an automated parameter-based identification system. By substituting the mechanical process of analyzing various link properties with a standardized parameter extraction and comparison mechanism, the system efficiently characterizes non-3GPP access links while maintaining high network performance.
Data Source
AI summary
The present disclosure is directed to a comprehensive Route Selection Policy (URSP) based on Wi-Fi multi-link operation. In one aspect, a method includes identifying a user device connected to an enterprise network that provides network connectivity to user devices over multiple radio access technologies; receiving network capability information indicating that the user device is capable of a multi-link operation over a Wi-Fi network, the Wi-Fi network being one of the multiple radio access technologies; determining a URSP for the user device, wherein the URSP is a singular route selection policy for the user device to send and receive data over the multiple radio access technologies and defines, in part, a per-application traffic routing rule for routing a portion of traffic for an application used on the user device, over one of multiple links available on the Wi-Fi network; and transmitting the URSP to the user device.