MTRP Cell Failure Recovery Without Serving Cell Information
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Solution Overview
Problem
Existing wireless communication systems face challenges in quickly recovering from connection failures, particularly when there is no serving cell information, leading to significant data interruptions during the connection re-establishment procedure.
Innovation Solution
The method and apparatus utilize a multiple transmit/receive point (MTRP) for fast connection failure recovery, enabling recovery mechanisms without requiring serving cell information, thereby avoiding lengthy RRC Re-establishment procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs a connection re-establishment procedure to recover from radio link failure, then the connection can be recovered, but the data interruption time increases significantly (up to 30 seconds)
Solution Approach 1:
The network pre-configures the UE with multiple candidate cells and recovery parameters before radio link failure occurs. When failure is detected, the UE can immediately use the pre-configured information to perform fast recovery without needing to search for cells or negotiate parameters during the recovery process, thus reducing data interruption time while ensuring reliable connection recovery
2Reliability
If the UE performs RRC Re-establishment procedure when no serving cell information is available, then connection recovery is possible, but the recovery time is extended significantly
Solution Approach 1:
The network provides the UE with pre-configured candidate cell information and recovery parameters before service interruption occurs. When radio link failure is detected and no serving cell information is available, the UE can directly utilize the pre-configured candidate cells to establish connection quickly, avoiding the time-consuming cell search and RRC re-establishment negotiation process
3Loss of time
If the UE uses MTRP for fast failure recovery, then data interruption time is reduced, but the device complexity increases
Solution Approach 1:
The MTRP mechanism is designed to serve multiple functions: it provides fast failure recovery, enables connection maintenance during handover, and supports load balancing. By making the recovery mechanism multi-functional and integrating it into existing LTE infrastructure, the added complexity is minimized while achieving significant reduction in data interruption time
Data Source
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AI summary
The present disclosure is related to a failure recovery in wireless communications. According to an embodiment of the present disclosure, when a user equipment (UE) detects a failure of a cell related to a first transmit/receive point (TRP), the UE may perform a recovery procedure to recovery the failure of the cell related to the first TRP based on a cell related to a second TRP.