Resolving Ambiguous UE Capability Signaling in Wireless Networks
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Solution Overview
Problem
Ambiguous user equipment (UE) capability signaling in wireless communication networks leads to unclear communication settings between UEs and base stations, particularly when UEs signal multiple capabilities for the same band combination, causing ambiguity in feature usage.
Innovation Solution
Implementing a method where UEs determine and signal their capabilities for multiple-input multiple-output (MIMO) or coordinated multipoint (CoMP) features across different frequency bands, allowing the base station to identify a specific combination of capabilities using deterministic rules, such as alphabetical ordering or network signaling, to resolve ambiguity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE signals multiple capability combinations for the same band combination, then the adaptability and versatility of the UE are improved, but the ambiguity in capability signaling increases
Solution Approach 1:
The patent applies preliminary action by having the UE signal multiple capability combinations in advance, allowing the network to select the appropriate one later. This resolves the contradiction by preparing multiple options beforehand (improving adaptability) while maintaining clear signaling through structured capability reports (preserving information clarity).
Solution Approach 2:
The patent implements dynamics by enabling the UE capability configuration to change based on different band combinations and network selections. The UE can dynamically adapt its signaled capabilities to match network requirements, resolving the contradiction between versatility (multiple capability options) and signaling clarity (deterministic selection).
2Adaptability or versatility
If the network selects from multiple signaled capability combinations, then the adaptability of the communication system is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the capability signaling into separate capability reports for different band combinations. Each report contains specific capability combinations, allowing the network to process and select from organized segments rather than a single complex block, thus reducing processing complexity while maintaining adaptability.
Solution Approach 2:
The patent implements partial action by having the UE signal capability combinations only for relevant band combinations rather than all possible combinations. This reduces the overall complexity for the network while maintaining sufficient adaptability for actual deployment scenarios.
3Reliability
If deterministic rules are used to select capability combinations, then the reliability of capability interpretation is improved, but the flexibility in capability selection is reduced
Solution Approach 1:
The patent applies preliminary action by establishing deterministic selection rules in advance (e.g., selecting the first capability combination in a reported list, or using alphabetical ordering). This ensures reliable and consistent capability interpretation across different UEs and networks while the UE maintains flexibility in preparing multiple capability options for selection.
Data Source
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AI summary
Certain aspects of the present disclosure generally relate to resolving ambiguous user equipment (UE) capability signaling. According to certain aspects, a method for wireless communications by a UE is provided. The method generally includes determining capabilities of the UE to support at least one of multiple-input multiple-output (MIMO) or coordinated multipoint (CoMP) features on different operating frequency bands of a radio access network (RAN), signaling, to a base station (BS) of the RAN, a first combination of capabilities of the UE for a combination of bands, signaling, to the BS, a second combination of capabilities, different than the first combination of capabilities, for the combination of bands, and identifying, based on or more criteria, a particular combination of capabilities to be used to communicate with the BS. In certain aspects, the UE may identify the combination of capabilities to use by applying a deterministic rule.