URSP Identifier Checks for Correct PDU Session Establishment
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Solution Overview
Problem
In existing wireless communication systems, network devices struggle to verify the correctness of session establishment requests and data transmission by terminal devices, as the current methods lack effective mechanisms for validating the association between applications and PDU sessions.
Innovation Solution
The implementation of a UE Route Selection Policy (URSP) that includes a Route Selection Descriptor (RSD) ID or URSP rule ID, allowing the UE to verify the correctness of PDU session establishment and data transmission by associating session parameters with specific network elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device uses traditional session establishment methods, then the session can be established, but the network device cannot determine whether the session establishment requested by the terminal device or data transmitted through the session is correct
Solution Approach 1:
The patent applies preliminary action by pre-configuring URSP rules with unique identifiers (RSD ID or URSP rule ID) in the network device before session establishment. When the terminal device requests PDU session establishment, it includes these pre-defined identifiers in the request. The network device can then verify the correctness of the session establishment by checking whether the requested session parameters match the pre-configured URSP rules, enabling accurate verification without complex real-time analysis mechanisms.
2Reliability
If the network device implements verification mechanisms, then the correctness of session establishment can be determined, but the complexity of the verification mechanism increases
Solution Approach 1:
The patent applies copying by creating simplified verification copies of session parameters. The terminal device copies the RSD ID or URSP rule ID from the requested PDU session establishment or data transmission and includes it in the verification request. The network device then compares this copied identifier against the pre-configured URSP rules to determine correctness. This copying approach enables verification without requiring complex analysis of entire session parameter sets, thus reducing mechanism complexity while maintaining reliability.
3Measurement precision
If the UE sends detailed session parameters for verification, then the verification accuracy improves, but the signaling overhead increases
Solution Approach 1:
The patent applies extraction by isolating and extracting only the critical verification element (RSD ID or URSP rule ID) from the complete session parameters. Instead of transmitting all session parameters for verification, the terminal device extracts and sends only the relevant identifier in the session parameter. The network device uses this extracted identifier to efficiently verify session correctness by matching it against pre-configured URSP rules, thereby achieving accurate verification with minimal signaling overhead.
Data Source
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AI summary
The present application discloses a session verification method, comprising: UE receives a UE route selection policy sent by a policy control function entity; the UE route selection policy comprises a route selection descriptor identifier or a UE route selection policy rule identifier; the UE sends a session parameter to a first network element; the session parameter is used for verifying whether the session established by the UE or the data transmitted by using the session is correct. The present application further discloses another session verification method, an electronic device, and a storage medium.