UE Capability Encoding for Compact Multicarrier Signaling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently encoding and communicating User Equipment (UE) capabilities in multicarrier systems, leading to large message sizes that exceed packet limits and require exhaustive processing, with potential over-reporting of configurations that operators and networks may not support.
Innovation Solution
A mechanism is introduced to split UE capability signaling into baseband and RF capabilities, allowing networks to reconstruct UE capabilities by bridging these indications using bandwidth classes, reducing message size and processing requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If UE capability signaling reports all possible configurations including fallback configurations, then completeness of capability information is improved, but message size increases and exceeds packet limits
Solution Approach 1:
The patent extracts and separates fallback capability information from the main capability message. Instead of including all possible fallback configurations in the capability report, the network is enabled to derive fallback capabilities implicitly from the reported capabilities and predefined rules, thereby removing unnecessary data from the message while preserving complete capability information.
Solution Approach 2:
The patent establishes universal rules and algorithms at the network side that can generate any fallback configuration from the reported capabilities. These universal derivation rules replace the need to explicitly signal each fallback configuration, allowing the network to universally determine all possible fallback scenarios from a compact capability report.
2Adaptability or versatility
If UE capability signaling includes all band combinations and fallback configurations, then capability coverage is improved, but processing complexity increases
Solution Approach 1:
The patent performs preliminary establishment of capability relationships and derivation rules during network configuration and UE capability reporting. By pre-defining the rules for deriving fallback capabilities from reported capabilities, the system avoids complex real-time processing when evaluating all possible band combinations and fallback scenarios, as the framework for derivation is already in place.
Solution Approach 2:
The patent introduces an intermediary derivation framework that mediates between the compact reported capabilities and the comprehensive fallback configurations. This intermediary layer of algorithms and rules enables the network to systematically generate complete capability information without directly processing all possible combinations, thereby reducing processing complexity while maintaining capability coverage.
3Measurement precision
If UE reports capabilities for all supported band combinations, then accuracy of capability representation is improved, but over-reporting of unsupported configurations occurs
Solution Approach 1:
The patent enables the network to self-determine which fallback configurations are actually supported by the UE based on the reported capabilities and predefined derivation rules. Instead of relying on potentially inaccurate explicit reporting of all fallback configurations, the network independently evaluates and identifies the true capability set, thereby eliminating over-reporting while maintaining accuracy.
Data Source
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AI summary
A UE apparatus determines UE capability and signals UE capability information to a base station. The UE may signal RF capability information to the base station with reference to at least one band combination and signal other baseband parameter(s) (obp(s)) to the base station. The RF capability information indicate RF capability with reference to at least one other band combination parameter. The obp may be indicated on a per UE basis, a per band basis, a per band combination basis, a per band, per band combination basis; and/or a per CC, per band, per band combination basis. Each band combination may indicate a combination of a numerology, a layer and a bandwidth. In another example, a plurality of basebands may be defined, each baseband indicating a combination of a numerology, a layer and a bandwidth.