LC-MTC UE Capability Matching via Network Signaling
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Solution Overview
Problem
In communication technologies, user equipment (UE) supporting low cost machine type communication (LC-MTC) experiences capability mismatches with network side devices that do not support LC-MTC, leading to resource wastage and power consumption issues during data transmission.
Innovation Solution
The UE identifies the capability of a network side device before initiating a random access process and reselects to access another device if it does not support LC-MTC, by checking for capability indication information in master information blocks, system information blocks, or scheduling information, and sends non-access stratum signaling to release resources and receive reselection configuration from the core network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a UE that supports LC-MTC accesses a cell that does not support LC-MTC using existing random access process, then the UE can establish connection with the network, but a capability mismatch occurs leading to resource wastage and extra power consumption
Solution Approach 1:
The network side device performs capability indication in advance by broadcasting capability information (such as LC-MTC support status) through system information blocks or other signaling before the UE attempts random access. This preliminary action allows the UE to identify compatible cells beforehand, avoiding capability mismatches and the associated energy waste from failed access attempts.
Solution Approach 2:
The system implements feedback mechanism where the network side device provides capability information to the UE through broadcasting or dedicated signaling. The UE uses this feedback to make informed cell selection decisions, ensuring capability compatibility before initiating random access, thereby preventing resource wastage and reducing power consumption.
2Adaptability or versatility
If a UE that supports LC-MTC is reselected to a cell that does not support LC-MTC according to existing cell reselection process, then the UE can camp on a cell, but capability mismatch occurs causing data transmission interruption
Solution Approach 1:
The network side device broadcasts capability indication information (such as LC-MTC support status) in system information blocks before the UE performs cell reselection. This preliminary action enables the UE to identify and select only those cells that support its LC-MTC capabilities, ensuring uninterrupted data transmission after reselection.
Solution Approach 2:
The system provides feedback through capability information broadcasting, allowing the UE to make informed cell reselection decisions. The UE uses this feedback to select cells with matching capabilities, ensuring reliable data transmission continuity after reselection.
3Speed
If a UE that supports LC-MTC is handed over to a cell that does not support LC-MTC according to existing handover process, then the handover can be executed, but capability mismatch occurs resulting in waste of authorized resources
Solution Approach 1:
The network side device performs capability indication in advance through handover preparation signaling, informing the target cell's capability status before handover execution. This preliminary action ensures that the UE is only handed over to cells that support its LC-MTC capabilities, preventing resource wastage while maintaining fast handover execution.
Solution Approach 2:
The system implements feedback mechanism where capability information is provided during handover preparation. The network side device uses this feedback to make informed handover decisions, ensuring capability compatibility and preventing resource wastage while maintaining efficient handover execution.
4Device complexity
If the network side device does not broadcast capability indication information, then the existing access and reselection processes can proceed without modification, but the UE cannot identify LC-MTC support status leading to capability mismatches
Solution Approach 1:
The system uses existing broadcasting mechanisms (system information blocks, random access response messages) to convey capability indication information. This multi-functional approach allows the same broadcasting infrastructure to serve both traditional system information dissemination and new capability indication purposes, minimizing system complexity while preventing capability mismatches.
Solution Approach 2:
The patent introduces capability indication information as an intermediary element that bridges the gap between network capabilities and UE requirements. This intermediary is transmitted through existing signaling channels, enabling the UE to identify LC-MTC support status without requiring fundamental changes to the system architecture.
Data Source
AI summary
Embodiments of the present invention provide a capability matching method, an apparatus, and a system. The method includes: before a user equipment (UE) initiates a random access process, identifying, by the UE, a capability of a network side device, and when the UE identifies that the network side device is a network side device that does not support low cost machine type communication (LC-MTC), reselecting, by the UE, to access another network side device. By means of the capability matching method, the apparatus, and the system provided in the embodiments of the present invention, a problem that a capability mismatch occurs between a UE and a network side device is avoided, and a waste of authorized resources, extra power consumption of a UE, and an interruption of data transmission are avoided.