C-DF Identifier Storage for 5G RAN Data Transmission
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Solution Overview
Problem
In 5G wireless communication networks, managing and optimizing massive data generated by terminal devices during movement within a coverage area is challenging, as existing technologies do not effectively facilitate the transmission of data between terminal devices and radio access network (RAN) devices, particularly in optimizing network performance and handover processes.
Innovation Solution
The implementation of an intelligent RAN architecture that includes cluster-data functions (C-DFs) for data collection, processing, and management, allowing terminal devices to learn and report C-DF identifiers for both current and historical data storage, enabling efficient data transmission between terminal devices and RAN devices, and facilitating optimized network performance through machine learning and artificial intelligence algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If terminal devices move within coverage area generating massive data, then data quantity increases, but data management and transmission complexity increases
Solution Approach 1:
The patent segments data management by introducing multiple C-DFs (Cluster Data Functions) distributed across different RAN devices. Each C-DF manages a specific cluster of data, allowing the system to handle massive data quantities by dividing the management burden into smaller, manageable segments. This is evident in the embodiment where different C-DFs (e.g., C-DF 102, C-DF 104) manage data from different terminal devices or data clusters independently.
Solution Approach 2:
The patent adds a new dimension to data management by introducing the C-DF identifier as an additional indexing layer. Instead of managing data solely through terminal device identifiers, the system now uses C-DF identifiers to organize and locate data across the network. This dimensional addition enables efficient routing and management of massive data flows without proportionally increasing management complexity.
2Reliability
If C-DF information is transmitted during handover, then network resilience improves, but signaling overhead increases
Solution Approach 1:
The patent applies preliminary action by having terminal devices obtain and store C-DF identifiers in advance, before handover occurs. The terminal device receives C-DF information from the serving RAN device and stores it locally. During handover, this pre-obtained C-DF information is reused, eliminating the need to transmit C-DF details again and reducing signaling overhead while maintaining network resilience.
Solution Approach 2:
The patent uses copying by having terminal devices store local copies of C-DF identifier information. Instead of repeatedly transmitting C-DF details during each handover signaling exchange, the terminal device maintains a local copy of the C-DF identifier received earlier, which can be referenced and transmitted efficiently during handover procedures.
3Quantity of substance
If data is stored across multiple C-DFs, then network capacity increases, but data location complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where RAN devices and C-DFs exchange information about data storage locations and terminal device associations. The serving RAN device provides feedback to the terminal device about which C-DF stores which data, enabling the terminal device to efficiently locate and retrieve data from the appropriate C-DF. This feedback loop reduces the complexity of locating data across multiple distributed C-DFs.
Solution Approach 2:
The patent introduces RAN devices as intermediaries between terminal devices and C-DFs. The RAN device maintains knowledge of the mapping between terminal devices and C-DFs, and facilitates data location by translating terminal device identifiers into C-DF identifiers. This intermediary role simplifies the data location process for terminal devices while enabling efficient distribution across multiple C-DFs.
Data Source
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AI summary
This application provides an information transmission method. A terminal device accesses a serving radio access network RAN device. The terminal device receives an identifier of a first cluster-data function C-DF associated with the serving RAN device that is sent by the serving RAN device, where the first C-DF is located in an access network and stores current data of the terminal device. When duration in which the terminal device camps on the serving RAN device is greater than or equal to a first threshold, the terminal device stores the identifier of the first C-DF.