User Equipment Capability Reporting in 5G Wireless Systems
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Solution Overview
Problem
Current wireless communication systems lack an efficient method for reporting user equipment (UE) capability, particularly in 5G networks, which hinders accurate bandwidth class information transmission and leads to ambiguities in uplink and downlink operations.
Innovation Solution
A method and apparatus for generating candidate band combinations to report UE capability, where the UE receives a request message from the base station, determines its capability information based on multiple radio access technology types and frequency bands, and transmits this information, including bandwidth class details for uplink or downlink, to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE capability reporting method is not optimized, then bandwidth class information transmission is inaccurate, but communication efficiency is reduced
Solution Approach 1:
The UE capability reporting is segmented into multiple containers organized by RAT types. Each container contains specific capability information for a particular RAT type, allowing the base station to selectively process only the relevant containers needed for current operation, thereby improving both accuracy and efficiency
Solution Approach 2:
The patent introduces a new dimension of organization by grouping UE capability information according to RAT types (E-UTRA, NR, E-UTRA-NR DC) rather than traditional flat structures. This dimensional reorganization enables more precise targeting of capability information and reduces unnecessary processing
2Loss of information
If comprehensive UE capability information is reported, then ambiguity is reduced, but message size and processing complexity increase
Solution Approach 1:
The comprehensive UE capability information is segmented into multiple RAT-type-specific containers. The base station receives all containers but only processes those relevant to current operations, reducing processing complexity while maintaining information completeness for future use
Solution Approach 2:
The UE proactively reports all capability information across different RAT types in advance, organizing it by container. This preliminary action ensures complete information availability while allowing the base station to selectively process only what is needed at each moment
Data Source
AI summary
A method of operating a user equipment (UE) in a wireless communication system, and an apparatus therefor are provided. The method includes receiving, from a base station, a request message for reporting of UE capability, wherein the request message comprises information for a plurality of radio access technology (RAT) types and information for a frequency band list, determining UE capability information corresponding to at least one RAT type among the plurality of RAT types, based on the information for the plurality of RAT types and the information for the frequency band list, and transmitting, to the base station, the UE capability information, wherein the UE capability information corresponding to at least one RAT type comprises information for a frequency band corresponding to the at least one RAT type and information for bandwidth class of the frequency band corresponding to the at least one RAT type, and wherein the information for bandwidth class of the frequency band corresponding to the at least one RAT type comprises at least one bandwidth class corresponds to at least one of uplink or downlink.