Access Control Method for 5G NR User Equipment
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Solution Overview
Problem
In 5G NR systems, the existing access control methods face inefficiencies due to high reservation and signaling overheads between the Non-Access Stratum (NAS) and Access Stratum (AS), which impact the performance and flexibility of user equipment (UE) access control.
Innovation Solution
The method involves a UE acquiring and initiating uplink access using access category information independently defined by the AS, reducing the reliance on NAS for access category information and thereby minimizing inter-layer signaling overheads, and enabling efficient access control by performing access barring operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access category information is obtained from NAS for uplink access requests, then access control can be performed, but signaling overheads between NAS and AS increase
Solution Approach 1:
The AS entity is enabled to independently obtain and manage access category information for uplink access requests without requiring NAS involvement. The AS entity stores access category information locally and performs access control autonomously, eliminating the need for inter-layer signaling between NAS and AS for this purpose.
Solution Approach 2:
The access category information management function is extracted from the NAS layer and relocated to the AS layer. This separation allows the AS entity to independently handle access control without relying on NAS signaling, thereby reducing inter-layer overhead while maintaining access control functionality.
2Loss of information
If AS independently manages access category information, then signaling overheads are reduced, but access control efficiency may be impacted
Solution Approach 1:
The AS entity pre-obtains and stores access category information locally before uplink access requests occur. This preliminary action ensures that when access control is needed, the AS entity can immediately perform the control function using pre-stored information, maintaining high efficiency without NAS signaling overhead.
Solution Approach 2:
The AS entity autonomously manages access category information including obtaining, storing, and applying the information for access control decisions. This self-service capability ensures that access control efficiency is maintained while eliminating dependency on NAS signaling.
Data Source
AI summary
Disclosed in embodiments of the present invention are an access control method and a related product. The method comprises: a user equipment obtains access category information of an access policy for uplink access, the access category information at least comprising first access category information separately defined by an access layer AS entity; and the user equipment initiates uplink access according to the access category information. The embodiments of the resent invention help to reduce reservation overheads of access policy information of an NAS layer, reduce signaling over heads between the NAS layer and an AS layer and improve the access control efficiency of a user equipment in an NR system.