Random Access Occasion Index Reset for CSI-RS Based Procedures
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Solution Overview
Problem
Conventional methods for resetting random access occasion indices in CSI-RS based random access procedures are insufficient, leading to infinite indices over time and incorrect identification of random access occasions by user equipment (UE) if not periodically reset, resulting in system inefficiencies and potential communication failures.
Innovation Solution
A method where a base station configures user equipment (UE) with random access occasion indices and a reset time based on CSI-RS resources, allowing the UE to identify correct random access occasions by resetting indices after a fixed time period or a number of CSI-RS resources, ensuring efficient and reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If random access occasion indices are continuously incremented without reset, then the indexing system can accommodate an increasing number of random access occasions, but the indices eventually become infinite and cannot be correctly identified by the UE
Solution Approach 1:
The patent implements periodic resetting of random access occasion indices at predefined reset times. The base station determines reset time information based on the number of random access occasions, and both the base station and UE reset the indices simultaneously at these predetermined intervals. This periodic action prevents indices from becoming infinite while maintaining the ability to accommodate multiple random access occasions within each period.
2Productivity
If the base station configures multiple CSI-RS resources with corresponding random access occasions, then the system can support more UEs and random access procedures, but the signaling overhead and complexity of index management increase
Solution Approach 1:
The patent creates a universal mapping relationship between CSI-RS resources and random access occasions that applies regardless of the number of UEs or CSI-RS resources configured. The base station determines a single reset time information parameter based on the total number of random access occasions, and this same reset time applies to all UEs and all CSI-RS resources. This universal approach allows the system to support multiple UEs and numerous CSI-RS resources while using a simplified, unified index management mechanism rather than separate management for each UE or resource.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Generally, Generally, a base station may send to a user equipment (UE) a configuration message, which may include an indication of one or more CSI-RS resources and one or more random access occasion indices. The UE may identify one or more random access occasions associated with the UE based on the CSI-RS resources, the random access occasion indices for the UE, and a random access occasion index reset time. The random access occasion index rest time may be based on a fixed time period. The random access occasion index reset time may be based on a number of CSI-RS resources. In some examples, the random access occasion index reset time may be based on a number of actually transmitted synchronization signal blocks (SSBs).