Access Network Context Update for Radio Capability Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the context of cellular internet of things (CIoT) devices, when a user equipment (UE) changes its radio capability in a suspend state, the current suspend/resume mechanism fails to update the access network, leading to abnormal communication and efficiency reduction due to the retention of outdated context information.
Innovation Solution
The method involves an access network apparatus receiving indication information to update or request the current radio capability of a UE, allowing it to delete or update the stored context information, ensuring successful resumption of radio resources and improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the access network apparatus retains the context information of the UE before the radio capability changes, then the radio resource can be resumed quickly based on the retained context, but the resumption may fail or cause abnormal communication due to the outdated context not reflecting the current radio capability
Solution Approach 1:
The access network apparatus performs preliminary actions by retaining context information in advance when the UE enters suspend state. However, it also implements a mechanism to detect capability changes and triggers context deletion or updates when changes are detected, ensuring the retained context remains valid for successful resumption.
Solution Approach 2:
The system implements feedback mechanisms where the access network apparatus monitors for radio capability changes of the UE. When a capability change is detected (through indication information from the UE or core network), the system provides feedback by deleting or updating the retained context, ensuring the context information remains synchronized with the current radio capability for reliable communication.
2Reliability
If the access network apparatus deletes the retained context information when the radio capability changes, then the communication reliability is improved, but the connection resumption speed is reduced due to the need to re-establish context
Solution Approach 1:
The system changes the state parameter of the retained context information based on radio capability changes. Instead of always deleting context, the system updates specific parameters (radio capability information) within the context when changes are detected, maintaining the overall context structure for quick resumption while ensuring capability synchronization.
Solution Approach 2:
The system implements dynamic management of retained context information. The context is retained during suspend state for quick resumption, but the system dynamically detects radio capability changes and adjusts the context accordingly (deletion or update) only when necessary, optimizing both resumption speed and reliability based on current conditions.
3Productivity
If the access network apparatus continuously monitors and updates the radio capability information, then the communication efficiency is improved, but the system complexity and signaling overhead increase
Solution Approach 1:
Instead of continuous monitoring, the system implements periodic updates triggered by specific events. The access network apparatus monitors for radio capability changes at key moments (when the UE sends indication information or when the core network provides updates), reducing continuous monitoring overhead while maintaining communication efficiency.
Solution Approach 2:
The UE actively participates in the capability update process by sending indication information when its radio capability changes. This self-service approach allows the UE to notify the access network apparatus of changes, reducing the need for the network to continuously monitor and query the UE for capability status.
Data Source
AI summary
This application provides a method for processing a change in a radio capability of a terminal apparatus and an apparatus. The method includes: receiving, by an access network apparatus, indication information, where the access network apparatus stores radio capability information of a terminal apparatus, and the indication information is used to indicate that a radio capability of the terminal apparatus changes, or is used to request a current radio capability of the terminal apparatus from the access network apparatus; and obtaining, by the access network apparatus, radio capability information of the terminal apparatus according to the indication information. According to this application, communication efficiency of a radio control resource connection performed when a radio capability of the UE changes in a suspend state can be improved.