PDAP Layer Mapping for 5G QoS Data Splitting and Handover
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Solution Overview
Problem
Current mobile communication technologies, particularly in the transition from LTE to 5G, lack effective methods for data processing and handover that accommodate the new Quality of Service (QoS) mechanisms and the increased network throughput, device connections, and low-latency requirements of 5G systems.
Innovation Solution
Implementing a method for data splitting and handover processing through the exchange of PDU session and QoS flow information between network elements, utilizing a packet data association protocol (PDAP) to manage data radio bearers and coordinate QoS mechanisms, and involving a computer storage medium for executing these methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data processing methods are implemented for the new QoS mechanism in next-generation systems, then QoS management capability is improved, but system complexity increases due to multiple PDU sessions and QoS flows mapping to DRBs
Solution Approach 1:
The patent segments the QoS management by introducing a PDAP layer that separates PDU session management from DRB management. The PDAP entity in the base station handles mapping relationships between multiple QoS flows and DRBs, dividing the complex QoS control function into modular components that can be managed independently.
Solution Approach 2:
The PDAP protocol acts as an intermediary layer between the PDCP layer and the QoS management functions. It mediates the mapping relationships between QoS flows and DRBs, coordinating the interaction between core network QoS requirements and radio access network resource allocation, thereby simplifying the overall system architecture.
2Productivity
If multiple QoS flows are mapped to the same DRB to improve resource utilization, then network throughput increases, but data processing complexity increases due to flow differentiation requirements
Solution Approach 1:
The patent segments data processing by introducing the PDAP layer that separately manages QoS flow identification and DRB mapping. This allows multiple QoS flows to be multiplexed on the same DRB while maintaining individual flow control through the PDAP entity, which handles flow differentiation and QoS parameter management independently.
Solution Approach 2:
The DRB is designed with multi-functionality to carry multiple QoS flows simultaneously. The PDAP entity provides universal mapping capabilities that can accommodate different QoS requirements (eGBR, non-GBR flows) on the same transport bearer, enabling resource sharing while maintaining service differentiation.
3Adaptability or versatility
If data splitting and handover processing are implemented without standardized methods, then system flexibility is maintained, but implementation difficulty increases due to lack of protocols
Solution Approach 1:
The patent implements dynamic data splitting and handover processing through the PDAP protocol. The mapping relationships between QoS flows and DRBs can be dynamically adjusted during handover scenarios, allowing the system to adapt to changing network conditions while following standardized procedures for flow migration and bearer reconfiguration.
Solution Approach 2:
The standardized PDAP protocol incorporates feedback mechanisms for handover and data splitting operations. The base station receives QoS flow information from the core network, processes mapping decisions, and provides status feedback, enabling coordinated data splitting and handover execution according to established protocols rather than ad-hoc implementations.
Data Source
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AI summary
Provided is a method, network element and system for implementing data processing. The method includes: transmitting, by a first network element, a request message to a second network element; feeding, by the second network element, a response message back to the first network element according to the request message received from the first network element; receiving, by the first network element, the response message fed back by the second network element, and transmitting an indication message to a third network element; and receiving, by the third network element, the indication message transmitted by the first network element, and processing data according to the indication message. The embodiments of the present application implement data splitting and handover processing for a next-generation mobile communication technology.