Network Slice Control Accuracy via UDM Segmentation
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately controlling network slice capacity and managing terminal mobility, leading to potential network overload and inefficient resource allocation.
Innovation Solution
The proposed method involves a network slice control mechanism that uses a Unified Data Management (UDM) entity to manage subscription information and quota limits for each network slice, allowing for dynamic adjustment of slice capacity and terminal mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If network slice capacity is increased to meet growing data traffic demand, then service coverage and user capacity are improved, but network control accuracy deteriorates and resource allocation efficiency decreases
Solution Approach 1:
The patent segments the network slice management into distinct functional components: UDM entity for subscription information storage, network slice SMF for quota management, and separate counting mechanisms for different slice types. This segmentation enables precise control over each slice while managing overall capacity, resolving the contradiction between increased capacity and maintained control accuracy.
Solution Approach 2:
The patent introduces an intermediary counting mechanism that acts as a mediator between the UDM entity and network slice SMFs. This intermediary maintains accurate counts of UEs per slice and per DNN, enabling precise resource allocation and quota enforcement even as network capacity scales, thus preventing control accuracy deterioration.
2Reliability
If network slice quota limits are strictly enforced to prevent network overload, then network stability is improved, but terminal mobility management and service flexibility are restricted
Solution Approach 1:
The patent implements dynamic quota management where the network slice SMF can adjust quota limits based on current network conditions, UE mobility states, and service requirements. The system dynamically updates UE counts and enforces quotas only when necessary, maintaining network stability while allowing flexible terminal mobility management without rigid constraints.
Solution Approach 2:
The patent establishes a feedback mechanism where the counting mechanism continuously monitors UE distribution across network slices and DNNs, and this information is fed back to the network slice SMF for real-time quota adjustment. This feedback loop ensures network stability through proactive overload prevention while maintaining adaptability for mobile terminals.
3Productivity
If detailed subscription information is stored for each network slice to improve resource allocation accuracy, then resource allocation efficiency is improved, but system complexity and information management burden increase
Solution Approach 1:
The patent segments subscription information management by storing data at multiple hierarchical levels: general slice subscription information in the UDM entity, and specific per-UE per-DNN counts in the network slice SMF. This segmentation reduces the information management burden on any single component while maintaining comprehensive resource allocation accuracy.
Solution Approach 2:
The patent introduces an intermediary counting mechanism that aggregates and processes detailed subscription information, reducing the complexity burden on the UDM and SMF entities. This intermediary handles the detailed tracking and reporting, enabling efficient resource allocation without proportionally increasing system complexity.
Data Source
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AI summary
A method, performed by a first network entity, in a wireless communication system includes receiving, from a user equipment (UE), a registration request including network slice selection assistance information (NSSAI); transmitting, to a second network entity, a request for subscription information of the UE, based on the registration request; and in response to receiving a response including the subscription information, selecting a third network entity to which the first network entity is to be changed for processing the registration request for the UE, or for allowing a slice for the UE.