5G Network Slice Selection During UE Registration
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Solution Overview
Problem
In 5G networks, user equipment (UE) faces challenges in instantly selecting the most appropriate network slice that matches its service requirements and working state, leading to delayed service access.
Innovation Solution
A user equipment registration method that involves receiving a registration request with slice selection information, determining capabilities, and transmitting network function discovery requests to select the appropriate network function for registration settings, or releasing interface connections to access nodes if necessary, ensuring seamless service access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE registers to the 5G network before selecting network slices, then the registration procedure is completed, but the service access is delayed due to inability to immediately connect to the required network slice
Solution Approach 1:
The patent applies preliminary action by enabling the UE to indicate preferred network slice information during the registration procedure, allowing the network to prepare and select appropriate network slices in advance. This ensures that when the UE needs service, the network slice is already selected and ready, eliminating delays while maintaining reliable registration completion.
2Adaptability or versatility
If the network selects network slices based on UE service requirements, then service matching is improved, but the registration procedure complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the network slice selection process into distinct phases: (1) UE indicates preferred network slice information during registration, (2) Network selects appropriate network slice based on this information, and (3) Network establishes connection. This segmentation simplifies the overall procedure while maintaining adaptability for service matching.
Solution Approach 2:
The patent uses network slice selection assistance information as an intermediary mechanism. This information element acts as a mediator between the UE's service requirements and the network's slice selection capability, enabling flexible service matching without increasing procedural complexity by providing a standardized interface for slice indication.
3Productivity
If the UE indicates preferred network slice information during registration, then service access is accelerated, but the registration request structure becomes more complex
Solution Approach 1:
The patent applies universality by integrating network slice indication into the existing registration request structure as a standardized information element. This allows the same registration procedure to handle both traditional registration and slice-aware registration, accelerating service access for slice-enabled scenarios without creating separate complex procedures.
Data Source
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AI summary
A user equipment registration method for network slice selection, and a network controller and a network communication system are provided. The method includes: receiving a registration request of a UE; in response to receiving the registration request including slice selection information, determining whether having a capability for serving the UE according to the slice selection information, so as to transmit a first network function discovery request including the slice selection information or transmit a second network function discovery request for searching a target AMF; and selecting a network function for serving the UE according to a network function discovery response to perform a registration setting operation after receiving the network function discovery response corresponding to the first network function discovery request, or transmitting an interface connection release message to an access node after receiving another network function discovery response corresponding to the second network function discovery request.