UE Capability Coordination Across RATs With Lower Signaling Overhead
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently coordinating user equipment (UE) capabilities across different radio access technologies (RATs), leading to increased signaling overhead and potential network attachment issues due to the large amount of capability information required for inter-RAT mobility and data aggregation decisions.
Innovation Solution
The method involves obtaining and determining compatible capability sets for a UE across multiple RATs, providing indications to each network, and configuring the UE to operate accordingly, thereby reducing the need for extensive signaling and improving inter-RAT mobility and data aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If comprehensive capability information is signaled for inter-RAT mobility decisions, then decision accuracy is improved, but signaling overhead increases
Solution Approach 1:
The UE capability information is segmented into RAT-specific capability sets (first RAT capability set and second RAT capability set) rather than transmitting a single comprehensive capability information. Each RAT network receives only the relevant capability set for its technology, reducing overall signaling overhead while maintaining decision accuracy for inter-RAT mobility.
Solution Approach 2:
Instead of having the UE provide complete capability information to all RAT networks and let them filter what is needed, the system inverts the approach by having each RAT network receive only its specific capability set. This inversion reduces the amount of information each network must process and transmit.
2Manufacturing precision
If comprehensive capability information is signaled for data aggregation decisions, then network configuration accuracy is improved, but connection procedure complexity increases
Solution Approach 1:
Capability information is segmented into distinct RAT-specific sets that are provided to respective networks independently. This segmentation simplifies the connection procedure by allowing each RAT network to process only relevant capability information, reducing procedural complexity while maintaining configuration accuracy for data aggregation.
3Reliability
If detailed capability sets are provided for each RAT, then inter-RAT mobility decision quality is improved, but information processing load increases
Solution Approach 1:
The capability information is segmented into RAT-specific sets that are tailored to each network's requirements. This segmentation reduces the information processing load on the UE by eliminating the need to generate and transmit redundant capability information for multiple RATs, while still providing detailed capability sets that ensure high-quality mobility decisions.
Data Source
AI summary
Certain aspects of the present disclosure relate to methods and apparatus for coordinating UE capabilities across RATs. In some cases, a UE may provide an indication of one or more first sets of capabilities of the UE to operate in a first RAT network that are compatible with one or more second sets of capabilities of the UE to operate in a second RAT network. Indicating the sets of capabilities may require less signaling overhead than explicitly signaling all possible combinations of capabililites.