UE PDCP Duplication and RLC Failure Handling
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in duplication handling, particularly in activating and deactivating duplication of transmissions across multiple paths, leading to delays and resource misallocation, and struggle with flexible handling of radio link control failures, which can disrupt communication.
Innovation Solution
A user equipment (UE) device autonomously determines whether to duplicate transmissions across multiple paths based on radio link conditions, service attributes, and uplink grants, and handles radio link control failures by suspending affected bearers while continuing to transmit on other paths, allowing for dynamic adaptation and reduced disruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE autonomously determines duplication activation/deactivation, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The UE autonomously determines whether to activate or deactivate duplication based on evaluating radio link conditions, service attributes, and uplink grant availability without requiring network intervention. This self-service mechanism improves transmission reliability while avoiding the complexity of continuous network signaling for duplication control.
2Reliability
If duplication is activated across multiple paths, then transmission reliability is improved, but resource utilization deteriorates
Solution Approach 1:
The duplication configuration is dynamically adjusted based on current radio link conditions, service attributes, and uplink grant availability. The UE can activate duplication only when necessary and deactivate it when conditions improve, optimizing the balance between transmission reliability and resource utilization rather than maintaining static duplication settings.
Solution Approach 2:
The system changes the duplication parameter (activated/deactivated) based on varying conditions including radio link quality, service requirements, and uplink grant availability. This parameter adjustment allows the system to maintain reliability when needed while conserving resources when duplication is not necessary.
3Reliability
If the UE suspends transmission on a failed bearer, then communication disruption is minimized, but transmission speed deteriorates
Solution Approach 1:
When a radio link control failure is detected on a specific bearer, the UE extracts or suspends transmission only on that failed bearer while continuing transmission on other bearers. This selective approach isolates the failure impact to a single bearer rather than suspending all transmissions, thereby maintaining communication reliability on affected paths while preserving transmission speed through alternative paths.
Data Source
AI summary
Apparatuses, systems, and methods for a wireless device to perform enhanced duplication handling and/or failure handling procedures with a network, including one or more base station. The wireless device may connect to a network using multiple paths. The wireless device may autonomously determine whether to duplicate one or more transmissions to the network on the multiple paths. In the event of a radio link control failure associated with one bearer, the wireless device may suspend transmission of the failed bearer while continuing to use one or more other bearers for transmission.