UE Capability Signaling Across FR1 FR2 and FDD TDD Modes
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Solution Overview
Problem
Current wireless communications terminals are limited in their ability to report capabilities across all work modes, particularly in frequency division duplex (FDD)/time division duplex (TDD) and frequency range 1 (FR1)/frequency range 2 (FR2), leading to incomplete network configuration and suboptimal communication performance.
Innovation Solution
Implementing new mapping relationships for reporting user equipment (UE) capabilities in six distinct work scenarios by reusing existing fields and defining new values for signaling, along with the use of first and second indication information to ensure compatibility between new and old network devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing reporting rules are used to report UE capabilities, then the reporting process is simple, but the UE can report capabilities only in some work modes and fails to report capabilities in other work modes
Solution Approach 1:
The capability reporting is segmented into different work mode scenarios (FDD-FR1, FDD-FR2, TDD-FR1, TDD-FR2, etc.), with each scenario having dedicated indication fields. This allows the UE to report capabilities for specific work modes separately, achieving comprehensive coverage across all work modes while maintaining clear structure
Solution Approach 2:
The patent adds a new dimension to capability reporting by introducing work mode indication fields that combine duplex mode (FDD/TDD) and frequency range (FR1/FR2) dimensions. This multi-dimensional approach enables the UE to indicate capabilities across different work mode combinations without requiring a completely new reporting mechanism
2Loss of information
If new mapping relationships are introduced to report capabilities in all work scenarios, then complete capability reporting is achieved, but signaling overhead increases
Solution Approach 1:
Existing capability indication fields are made universal by reusing them across different work mode scenarios. The same field structures are used for FDD and TDD modes, as well as for different frequency ranges, reducing the need for additional signaling elements while maintaining complete capability information
Solution Approach 2:
The patent changes the parameter values in existing fields to represent different work mode scenarios. By reusing field structures and only changing the mapping relationships between field values and work modes, the signaling overhead is minimized while achieving complete capability reporting across all scenarios
3Measurement precision
If new mapping relationships are used for capability reporting, then accurate parsing by new network devices is achieved, but compatibility with old network devices is lost
Solution Approach 1:
The patent creates a mapping relationship that acts as a copy or translation layer between new and old network devices. The new mapping relationships are designed to be interpreted by new devices with high precision, while old devices can still process the signaling using their existing interpretation rules, ensuring backward compatibility
Solution Approach 2:
The mapping relationships serve as an intermediary layer that bridges new and old network devices. New devices use the new mapping relationships for accurate parsing, while old devices can still understand the signaling through their existing interpretation methods, allowing seamless interaction between different device generations
Data Source
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AI summary
Embodiments of this application disclose a user equipment capability transmission method, an information transmission method, and related products. When applied to user equipment, the method includes: sending capability information to an access network device, where the capability information is used to indicate capabilities of the user equipment in different work scenarios, and the work scenarios are obtained by combining frequency range 1 and frequency range 2 with frequency division duplex and time division duplex. Each work scenario includes at least two work modes, and the at least two work modes include, for example, a work mode of frequency division duplex-frequency range 2 and a work mode of time division duplex-frequency range 1. Generally, according to a reporting rule in the , only related capabilities in work scenarios that are obtained by combining no more than three of frequency range 1, frequency range 2, frequency division duplex, and time division duplex can be reported. This application resolves the prior-art problem that only related capabilities of UE in some work modes can be reported.