UE Capability ID Signaling for Lower Radio Capability Overhead

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Solution Overview

Problem

The increasing size of UE radio capabilities due to additional bands supported in NR Rel-15 leads to significant signaling overhead in reporting UE radio capabilities, necessitating an efficient approach to signal UE Radio Capability information.

Innovation Solution

Implementing UE capability ID based signaling, where a set of UE radio capabilities is mapped to an ID, allowing the UE to report the ID instead of detailed capabilities, reducing signaling overhead and bandwidth usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If detailed UE radio capabilities are reported, then capability information completeness is improved, but signaling overhead increases

Engineering Contradiction:

Improvecapability information completenessVSAvoidsignaling overhead

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent creates a simplified copy (capability ID) that represents the complete capability set. Instead of transmitting the full detailed capability information, a compact identifier is sent that maps to the complete capability profile stored in the network's capability database, significantly reducing signaling overhead while preserving information completeness.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent introduces an intermediary mapping mechanism between capability IDs and detailed capability information. The network maintains a capability database that acts as an intermediary, allowing the system to transmit compact IDs while retrieving complete capability details on demand, thus resolving the contradiction between information completeness and signaling efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If UE capability ID signaling is implemented, then bandwidth usage is reduced, but compatibility with legacy UEs must be maintained

Engineering Contradiction:

Improvebandwidth usageVSAvoidlegacy UE compatibility

Core Design Contradiction:

Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic capability reporting mechanism where the reporting mode (detailed capabilities vs. capability ID) is flexibly selected based on UE type and network configuration. New UEs can use compact capability ID signaling to reduce bandwidth usage, while legacy UEs automatically fall back to detailed capability reporting, ensuring backward compatibility through adaptive behavior.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent creates a universal capability signaling framework that supports both detailed capability reporting and compact capability ID reporting within the same system. The network can universally handle both reporting modes, allowing new UEs to benefit from reduced bandwidth usage while legacy UEs maintain compatibility through their traditional detailed reporting method.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12501255B2Device capability identifier signaling

Publication Date: 2025.12.16 ZTE CORP

AI summary

Various techniques for device capability identifier signaling are presented. One example method of wireless communication includes receiving, by a wireless device from a network node, a request for a capability identifier of the wireless device that identifies capabilities of the wireless device and transmitting, in response to the request, the capability identifier or detailed capabilities.