UE Radio Capability ID Mapping for 5G Core Network Signaling
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Solution Overview
Problem
In 5G mobile communication systems, the inefficiency in utilizing UE radio capabilities due to increased message size and the need for more band combinations and functions leads to resource wastage, as existing methods do not effectively manage and recognize UE radio capabilities within the core network.
Innovation Solution
A method and device that enable the core network to recognize UE radio capabilities by using a representative representation, such as a radio capability ID, which is configured and managed by the UE manufacturer or service provider, allowing efficient signaling and storage in the Unified Data Repository (UDR) and Access and Mobility Management Function (AMF), thereby reducing resource loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE radio capability information is fully transmitted in each message, then the core network can recognize the UE radio capability, but the message size increases and radio resources are wasted
Solution Approach 1:
The patent applies preliminary action by pre-configuring and storing UE radio capability information in the core network before actual communication occurs. The AMF retrieves and stores UE radio capability data in advance, so that when the UE connects, the capability information is already available, eliminating the need to transmit full capability messages during connection establishment.
Solution Approach 2:
The patent uses copying by creating and storing copies of UE radio capability information in the core network's AMF. Instead of transmitting the original full capability data repeatedly, the system maintains replicated copies of the capability information that can be quickly accessed and used for multiple UEs with similar capabilities, reducing message size while maintaining recognition accuracy.
2Loss of energy
If the UE radio capability information is compressed to reduce message size, then radio resources are utilized more efficiently, but the core network may lose recognition accuracy of the UE radio capability
Solution Approach 1:
The system performs preliminary retrieval and validation of UE radio capability information from stored data before communication begins. The AMF proactively fetches complete capability information from the UE capability database in advance, ensuring full accuracy is available when needed, while only transmitting minimal identifiers during actual communication.
Solution Approach 2:
The patent introduces an intermediary mechanism where the AMF acts as a mediator between the compressed capability identifiers transmitted in messages and the full UE radio capability information stored in the database. The AMF maintains the mapping relationship and retrieves complete capability data when needed, ensuring no loss of recognition accuracy while benefiting from compressed message transmission.
3Measurement precision
If the core network stores complete UE radio capability information, then the recognition accuracy is maintained, but the storage requirements and system complexity increase
Solution Approach 1:
The patent applies segmentation by dividing UE radio capability information into two parts: a compact identifier that is transmitted in messages and a detailed capability description that is stored in the database. The AMF manages these segmented components separately, storing only essential mapping relationships in memory while keeping full capability data in persistent storage, thereby reducing active memory requirements and system complexity.
Solution Approach 2:
The patent implements universality by creating a standardized UE radio capability information structure that can serve multiple purposes: it acts as a storage reference, a transmission identifier, and a configuration template. This multi-functional design allows the same data structure to be used across different network functions and scenarios, reducing the need for separate storage mechanisms and lowering overall system complexity.
4Loss of energy
If the message size is reduced by not including full UE radio capability information, then radio resource utilization improves, but the UE radio capability cannot be fully transmitted in one message requiring additional signaling
Solution Approach 1:
The patent applies preliminary action by pre-establishing the UE radio capability information in the core network before the UE actually connects. The AMF retrieves and caches capability information in advance, so that during connection establishment, only minimal reference identifiers need to be exchanged. This eliminates the need for additional capability transmission messages that would otherwise be required.
Data Source
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AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates in a Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, a network node in a wireless communication system may include: receiving, from an application function (AF) via a network exposure function (NEF), user equipment (UE) radio capability information on UE radio capability identifier (ID) and at least one UE radio capability mapping to the UE radio capability ID; receiving, from an access and mobility management function (AMF), a request for information on at least one UE radio capability mapping to a specific UE radio capability ID; and transmitting, to the AMF, the information on at least one UE radio capability mapping to the specific UE radio capability ID.