URSP Satellite Access Policy for 5G Core Network Selection
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Solution Overview
Problem
Existing communication systems lack a solution for selecting an access mode by a terminal and network in converged satellite and 5G communication systems, due to their different technical systems and transmission methods.
Innovation Solution
A method for generating a UE route selection policy (URSP) that includes satellite access indication information, allowing terminals to access a core network via satellite mode, and transmitting this policy through network elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If satellite communication system and 5G communication system use different technical systems, then each system can be optimized independently, but there is no solution for policy control of access mode selection in converged systems
Solution Approach 1:
The patent creates a universal policy control mechanism that works across both satellite and 5G communication systems. The PCF generates URSP rules that can indicate different access modes (satellite, 5G, or both) in a unified manner, allowing the same policy control architecture to serve multiple communication systems without requiring separate control mechanisms for each system.
Solution Approach 2:
The patent segments the access mode selection policy into discrete URSP rules with specific indicators. Each URSP rule can independently indicate satellite access mode, 5G access mode, or combinations thereof, allowing flexible and granular control over access mode selection without requiring a monolithic complex policy system.
2Adaptability or versatility
If satellite access mode is added to URSP rule, then terminal can access core network via satellite, but URSP rule structure becomes more complex
Solution Approach 1:
The patent merges the satellite access mode indication with the existing URSP rule structure by utilizing the access type preference field. Instead of creating a separate complex structure for satellite access, the solution combines satellite access indication with the standard access type preference (3GPP, non-3GPP, or multi-access), thereby adding satellite capability without significantly increasing structural complexity.
3Area of stationary object
If different access modes are supported in converged system, then coverage area is enhanced, but transmission method compatibility becomes problematic
Solution Approach 1:
The patent implements dynamic access mode selection through URSP rules that can adapt to different transmission scenarios. The terminal can dynamically choose between satellite access mode, 5G access mode, or multi-access mode based on the URSP policy received from the network, allowing the system to maintain transmission method compatibility across different coverage areas and operational conditions.
Data Source
AI summary
Provided are a method, apparatus, a non-transitory computer-readable storage medium for data transmission in a 5G communication system. The process may include generating a UE route selection policy (URSP), the URSP comprising a URSP rule, the URSP rule comprising a route selection descriptor (RSD), the RSD comprising satellite access indication information, and the satellite access indication information indicating that a terminal selects a satellite access mode to access a core network; and transmitting the URSP to the terminal through a second network element.