C-RNTI Allocation Randomization for Carrier Aggregation Conflict Resolution
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Solution Overview
Problem
In carrier aggregation (CA) technology, cell radio network temporary identifiers (C-RNTI) conflicts occur when a secondary component carrier (SCC) allocates a C-RNTI to another user equipment (UE) due to inconsistent allocation across primary and secondary carriers.
Innovation Solution
A method and device for randomly determining a start position within a C-RNTI value range to select a C-RNTI for user equipment (UE) from a smaller interval range, ensuring that each serving cell allocates unique C-RNTIs to prevent conflicts by randomizing the allocation interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the SCC allocates C-RNTI independently from the PCC, then the SCC can autonomously manage resources, but C-RNTI conflicts occur between different UEs
Solution Approach 1:
The PCC performs preliminary C-RNTI allocation before the SCC needs to allocate C-RNTI. The allocated C-RNTI is then transferred to the SCC, ensuring consistency is established in advance before potential conflicts can occur during SCC operations
Solution Approach 2:
The PCC acts as an intermediary between the C-RNTI pool and the SCC. It receives C-RNTI allocations, manages them centrally, and distributes them to the SCC, preventing direct conflicts by routing all C-RNTI management through a single coordinating entity
2Adaptability or versatility
If the C-RNTI value range is divided into multiple intervals, then allocation flexibility increases, but the complexity of managing multiple ranges increases
Solution Approach 1:
The C-RNTI value range is segmented into multiple intervals, with each interval designated for specific purposes (e.g., first interval for PCC allocation, second interval for SCC allocation). This segmentation provides flexibility in resource distribution while maintaining clear boundaries that simplify management
Solution Approach 2:
Different intervals of the C-RNTI range are assigned different qualities or purposes. The first interval is optimized for PCC operations while the second interval is optimized for SCC operations, allowing each carrier type to use C-RNTIs with properties suited to its specific requirements
Data Source
AI summary
A cell radio network temporary identifier (C-RNTI) allocation method and device are disclosed. The method includes: when UE accesses a serving cell, randomly determining, by an entity at which the serving cell is located, a start position for selecting a C-RNTI, selecting a C-RNTI for the UE within a C-RNTI interval range starting from the start position, and allocating the selected C-RNTI to the UE. So the entity at which the serving cell is located randomizes the start position of allocation performed by the entity and uses the start position as a start position of an allocation interval, so that allocation of the C-RNTI is randomized.