UE Capability Indication for Frequency Range and Duplex Mode Combinations
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Solution Overview
Problem
In 5G NR systems, there is ambiguity in scenarios where a communication feature is associated with both frequency range and duplex mode differentiation, as UEs are required to separately indicate their support for multiple frequency ranges and duplex modes, leading to unclear capability reporting.
Innovation Solution
A method where a UE determines its capability to support multiple frequency range and duplex mode combinations associated with a communication feature and transmits a UE capability indication to a core network component, which receives and responds to this indication to clarify the UE's support for specific combinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If UEs separately indicate support for multiple frequency ranges and duplex modes, then the capability reporting covers all possible combinations, but the reporting becomes ambiguous and unclear when both frequency range and duplex mode differentiation are associated with a communication feature
Solution Approach 1:
The patent combines frequency range indication and duplex mode indication into a unified capability reporting structure. Instead of separate indications for frequency ranges (FR1, FR2) and duplex modes (FDD, TDD), the UE provides a single capability indication that simultaneously covers all combinations, eliminating ambiguity while maintaining comprehensive coverage.
Solution Approach 2:
The capability indication mechanism is designed to universally handle all frequency range and duplex mode combinations through a single reporting structure. This multi-functional approach allows the same indication to cover FR1-FDD, FR1-TDD, FR2-FDD, and FR2-TDD scenarios without requiring separate specialized indications for each case.
2Reliability
If UEs provide separate capability indications for each frequency range and duplex mode, then complete capability information is provided, but the signaling overhead and processing complexity increase
Solution Approach 1:
Multiple capability indications (for different frequency ranges and duplex modes) are merged into a single unified indication. This reduces the quantity of signaling messages while maintaining complete capability information, as the unified indication inherently covers all combinations of frequency ranges and duplex modes.
Solution Approach 2:
The unified capability indication serves multiple functions simultaneously: it indicates support for FR1, FR2, FDD, TDD, and all their combinations through a single signaling message, thereby reducing overall signaling overhead while preserving complete capability information.
Data Source
AI summary
In an aspect, a UE may determine a capability of the UE to support two or more frequency range and duplex mode combinations associated with a communication feature, wherein the communication feature is associated with a plurality of frequency ranges and is further associated with a plurality of duplex modes on at least one of the plurality of frequency ranges. The UE may transmit, to a core network component, a UE capability indication that indicates the determined capability. The core network component may receive the UE capability indication. The core network component may perform at least one action in response to the UE capability indication.