BWP Hopping Configuration Suspension for RLF Recovery
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently recovering from radio link failures during bandwidth part hopping, particularly due to the complexity of coordinating random access procedures across varying frequency allocations and the risk of synchronization loss during BWP hopping.
Innovation Solution
The method involves receiving a bandwidth part (BWP) hopping configuration, identifying radio link failures, disabling the BWP hopping configuration, and initiating a random access procedure on a specific BWP associated with the random access procedure, allowing for efficient resource allocation and maintaining synchronization with the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If BWP hopping configuration is maintained during radio link failure, then frequency diversity and resource allocation flexibility are improved, but coordination complexity and synchronization loss risk increase
Solution Approach 1:
The patent extracts the BWP hopping configuration from the active communication state during RLF recovery. By suspending BWP hopping when radio link failure is detected, the system isolates the random access procedure from the dynamic frequency switching mechanism, thereby reducing coordination complexity while preserving resource allocation flexibility during normal operation.
Solution Approach 2:
The system dynamically adjusts the BWP hopping configuration based on the radio link state. When RLF is detected, the BWP hopping is suspended to simplify coordination; when the link is healthy, BWP hopping continues to provide frequency diversity. This dynamic switching resolves the contradiction between adaptability and complexity.
2Stability of the object's composition
If BWP hopping is suspended during random access procedure, then synchronization stability is improved, but frequency diversity benefit is reduced
Solution Approach 1:
The patent applies preliminary action by detecting radio link failure and suspending BWP hopping before the random access procedure begins. This preemptive measure ensures that the frequency allocation remains stable throughout the entire random access process, preventing synchronization issues that would arise from mid-procedure frequency changes.
Solution Approach 2:
The system applies different quality requirements to different phases of communication: during normal operation, frequency diversity (reliability) is prioritized through active BWP hopping; during RLF recovery, synchronization stability is prioritized by suspending hopping. This localized application of different operational qualities resolves the contradiction.
3Productivity
If random access procedure uses current BWP during hopping, then resource allocation efficiency is improved, but synchronization loss risk increases
Solution Approach 1:
The patent applies preliminary anti-action by counteracting the potential synchronization loss before it occurs. When RLF is detected, the system preemptively suspends BWP hopping to eliminate the source of synchronization risk, even though this temporarily reduces resource allocation efficiency. The random access procedure then proceeds on a stable frequency allocation.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a bandwidth part (BWP) hopping configuration indicating a set of hops for a BWP of the UE. The UE may identify a radio link failure (RLF) during a time period configured by the set of hops. The UE may disable the BWP hopping configuration based at least in part on identifying the RLF. The UE may initiate a random access procedure on a BWP that is associated with the random access procedure. Numerous other aspects are described.