NTN Terminal RRC Re-establishment Triggering via Target Information
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Solution Overview
Problem
In Non-Terrestrial Networks (NTN), existing methods for triggering Radio Resource Control (RRC) re-establishment operations in terminals are inadequate, leading to service interruptions due to delayed detection of Radio Link Failures (RLF) and inability to perform neighboring cell measurements.
Innovation Solution
A method where a terminal receives target information from a network device to determine a trigger condition for performing RRC re-establishment or neighboring cell measurement operations, allowing timely execution of these operations based on satisfied trigger conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods for triggering RRC re-establishment operations are used in NTN, then the terminal can maintain basic connectivity, but service interruptions occur due to delayed detection of Radio Link Failures
Solution Approach 1:
The patent applies preliminary action by configuring the terminal with target information (reference signal configuration, time offset, distance threshold) in advance before RLF occurs. This enables the terminal to proactively monitor and detect RLF conditions earlier than conventional methods, reducing detection delay and improving service continuity in NTN environments where propagation delays are significant
2Reliability
If existing methods are used, then the terminal can operate with simple protocols, but neighboring cell measurements cannot be performed leading to service interruptions
Solution Approach 1:
The patent enables neighboring cell measurements by configuring the terminal with target information in advance, including reference signal configuration for neighboring cells. This preliminary configuration allows the terminal to perform measurements before service interruption occurs, improving service availability without requiring complex on-the-fly measurement mechanisms
Solution Approach 2:
The patent introduces target information as an intermediary element that mediates between the network device and terminal. This target information (containing reference signal configuration, time offset, distance threshold) enables the terminal to perform neighboring cell measurements by providing the necessary measurement parameters, thus bridging the gap between simple terminal operation and complex measurement requirements
Data Source
AI summary
A method for triggering an operation includes: receiving target information sent by a network device; wherein the target information is used by the terminal to determine a trigger condition for triggering at least one of a radio resource control (RRC) re-establishment operation or a neighboring cell measurement operation; and determining that the trigger condition is satisfied, and performing the at least one of the RRC re-establishment operation or the neighboring cell measurement operation.