UE Route Selection Policy Feedback for Efficient URSP Enforcement
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Solution Overview
Problem
In 5G wireless communication systems, user equipment (UE) faces inefficiencies and resource wastage due to the evaluation of inapplicable UE Route Selection Policy (URSP) rules, leading to power consumption, latency, and potential procedure errors, as the network is unaware of the UE's support for specific policies.
Innovation Solution
The UE provides status information on its support or lack of support for URSP rules to the core network, allowing the network to efficiently configure policies and reducing evaluation delays by indicating this information in registration requests or configuration update procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE evaluates all provisioned URSP rules to ensure proper routing, then the routing accuracy is improved, but the power consumption and processing time increase
Solution Approach 1:
The UE performs capability indication upfront during registration or policy delivery, informing the network of supported URSP rule types before actual policy evaluation. This preliminary action allows the network to pre-filter and provision only applicable rules, avoiding subsequent waste of UE resources on evaluating unsupported rules.
Solution Approach 2:
The URSP rule set is segmented into supported and unsupported rule types based on UE capability. The network separates applicable rules from inapplicable ones, provisioning only the relevant subset to the UE. This segmentation eliminates the need for the UE to evaluate and discard unsupported rules, reducing processing overhead and power consumption.
2Measurement precision
If the UE evaluates all provisioned URSP rules to ensure proper routing, then the routing accuracy is improved, but the processing time and latency increase
Solution Approach 1:
The UE performs capability indication upfront during registration or policy delivery, informing the network of supported URSP rule types before actual policy evaluation. This preliminary action allows the network to pre-filter and provision only applicable rules, avoiding subsequent waste of UE resources on evaluating unsupported rules.
Solution Approach 2:
The URSP rule set is segmented into supported and unsupported rule types based on UE capability. The network separates applicable rules from inapplicable ones, provisioning only the relevant subset to the UE. This segmentation eliminates the need for the UE to evaluate and discard unsupported rules, reducing processing overhead and power consumption.
3Adaptability or versatility
If the network provisions comprehensive URSP rules without knowing UE capabilities, then the policy coverage is improved, but the procedure complexity and error rate increase
Solution Approach 1:
The UE provides capability feedback to the network during registration or policy delivery, indicating which URSP rule types it supports. The network uses this feedback to adaptively provision an optimized subset of rules. This feedback mechanism enables the network to maintain comprehensive policy coverage while tailoring the actual provisioned rules to match UE capabilities, reducing procedural complexity and errors.
4Productivity
If the UE skips unsupported URSP rules without notification, then the processing efficiency is improved, but the network awareness and policy optimization are worsened
Solution Approach 1:
The UE provides capability feedback to the network during registration or policy delivery, indicating which URSP rule types it supports. The network uses this feedback to adaptively provision an optimized subset of rules. This feedback mechanism enables the network to maintain comprehensive policy coverage while tailoring the actual provisioned rules to match UE capabilities, reducing procedural complexity and errors.
Data Source
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AI summary
A user equipment (UE) that communicates with a core network (CN) via a radio access network (RAN) can implement a method of facilitating rule enforcement for UE route selection policies. The method includes receiving (434) from the CN a first non-access stratum (NAS) transport message for delivery of UE policies in a UE configuration update procedure and, in response, transmitting (444) to the CN a second NAS transport message indicating a result of the delivery of UE policies. The method also includes transmitting (464) to the CN a third NAS transport message including route selection policy status information, the route selection policy status information indicating support or lack of support, by the UE, for one or more rules specifying route selection for UE traffic.