UE Capability Synchronization via Idle State Transition
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Solution Overview
Problem
Existing electronic devices face issues with mismatched user equipment (UE) capabilities between the device and the network, leading to potential operational problems or severe heating due to outdated capability information.
Innovation Solution
The electronic device identifies events requiring UE capability changes, transmits a tracking area update (TAU) request, enters an idle state, establishes a new radio resource control (RRC) connection, and then transfers the updated UE capability information to the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the network does not transmit a UE capability enquiry message when receiving a TAU request message in RRC connected state, then the existing RRC connection is maintained, but the UE capability information becomes outdated and mismatched
Solution Approach 1:
The electronic device performs preliminary actions by entering idle state and establishing a new RRC connection before the network can potentially send a UE capability enquiry message. This ensures that the UE capability information is updated and transmitted proactively, preventing information loss while maintaining connection stability.
Solution Approach 2:
The electronic device uses feedback mechanisms by monitoring whether a UE capability enquiry message is received after sending the TAU request. Based on this feedback, the device decides whether to enter idle state and establish a new RRC connection to update UE capability information, ensuring synchronization between device and network.
2Duration of action of stationary object
If the electronic device maintains existing RRC connection without updating UE capability, then connection continuity is preserved, but operational mismatches and heating problems occur
Solution Approach 1:
The electronic device takes preliminary action by entering idle state and establishing a new RRC connection before operational mismatches can cause severe heating problems. This proactive approach ensures UE capability information is updated in advance, maintaining both connection duration and operational reliability.
Solution Approach 2:
The electronic device applies preliminary anti-action by preventing the harmful effect of operational mismatches before they occur. By proactively updating UE capability information through idle state transition and new RRC connection establishment, the device prevents heating problems and operational failures before they can manifest.
3Loss of information
If the electronic device enters idle state and establishes new RRC connection to update UE capability, then capability synchronization is achieved, but additional protocol procedures are required
Solution Approach 1:
The electronic device performs preliminary actions by entering idle state and establishing a new RRC connection before the network sends a UE capability enquiry message. This proactive approach ensures capability synchronization is achieved through standard procedures, avoiding the need for complex additional protocols.
Solution Approach 2:
The electronic device performs self-service by autonomously monitoring whether a UE capability enquiry message is received and independently deciding to enter idle state and establish a new RRC connection if needed. This self-managed approach achieves capability synchronization without requiring complex network coordination or additional protocol procedures.
Data Source
AI summary
According to various embodiments, an electronic device includes: at least one processor, and the at least one processor is configured to: check at least one event requiring a change in user equipment (UE) capability of the electronic device, change the UE capability of the electronic device based on the at least one event and transmit a TAU request message indicating that UE capability information update is requested, enter an idle state, based on receiving a TAU acceptance message corresponding to the TAU request message in a state in which the UE capability enquiry message corresponding to the TAU request is not received, establish a new RRC connection with the network in the idle state, receive a UE capability enquiry message based on the new RRC connection, and transmit a UE capability information message including the changed UE capability, based on the reception of the UE capability enquiry message.