RedCap UE Capability Signaling for Network Identification
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Solution Overview
Problem
The existing 5G NR systems lack an effective mechanism for Redcap UE to indicate its reduced capabilities, such as bandwidth and maximum transmission power, to the network device, necessitating further study in capability reporting schemes.
Innovation Solution
A signaling method and apparatus for Redcap UE to explicitly or implicitly indicate its reduced capabilities to the network device using dedicated capability indication domains, allowing for efficient differentiation and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If no capability indication mechanism is provided for Redcap UE, then the existing 5G NR system maintains simplicity, but the network device cannot accurately identify and allocate resources for reduced capability terminal devices
Solution Approach 1:
The patent extracts the capability indication function from the general UE capability reporting framework by introducing a dedicated capability indication domain. This domain specifically carries Redcap UE capability information, separating it from legacy UE capability reporting. The extraction allows the network device to clearly identify Redcap UEs without complicating the overall capability reporting mechanism for all UEs.
Solution Approach 2:
The patent introduces a capability indication domain as an intermediary element between the Redcap UE and the network device. This domain acts as a mediator that carries capability information and enables the network device to identify Redcap UEs. The intermediary structure allows capability indication without requiring fundamental changes to the existing 5G NR capability reporting framework.
2Measurement precision
If a dedicated capability indication domain is introduced for Redcap UE, then accurate capability reporting is enabled, but the signaling overhead and system complexity increase
Solution Approach 1:
The capability indication domain is designed with multi-functionality to reduce signaling overhead. It can indicate both the presence of Redcap UE capability and convey specific capability parameters. The domain structure allows it to serve multiple purposes: identifying Redcap UE type, indicating supported capabilities, and enabling appropriate network resource allocation, all within a single signaling element.
Solution Approach 2:
The patent employs parameter changes within the capability indication domain to efficiently convey information. By varying parameters such as the domain presence, domain value, or domain combination, the system can indicate different Redcap UE capability states without requiring separate signaling elements for each capability parameter, thus reducing overall signaling overhead.
Data Source
AI summary
The present application discloses a signaling transmitting method, a signaling receiving method, an apparatus, a device, and a storage medium, and relates to the field of communication technology. The method includes: transmitting, by a terminal device, a first signaling to a network device, where the first signaling is used to report a first capability supported by the terminal device and indicate whether the terminal device is a reduced capability terminal device. According to the present application, when performing capability reporting to a network device, a terminal device indicates, to the network device, whether the terminal device is a reduced capability terminal device, thereby achieving reporting indication related to a Redcap UE. Moreover, the present application further provides two indication modes, i.e., explicit indication and implicit indication.