PDCP Entity Interrupts RLC Processing to Prevent Buffer Overflow
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Solution Overview
Problem
In 5G mobile communication networks, data buffer overflow occurs in the RLC entity due to incomplete processing of data packets, leading to security and reliability issues in data transmission, especially when carrier channel conditions differ between RLC entities.
Innovation Solution
A method where the PDCP-layer entity, upon detecting complete delivery of an RLC PDU by the first RLC-layer entity, interrupts the processing of the second RLC SDU, ensuring that data duplication and transmission functions are managed to prevent buffer overflow and enhance security by discarding incompletely processed packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data duplication is implemented across multiple RLC entities to improve transmission reliability, then data transmission reliability is improved, but data buffer overflow occurs in the second RLC entity due to incomplete processing
Solution Approach 1:
The patent implements a feedback mechanism where the first RLC entity notifies the PDCP entity when data is successfully delivered. The PDCP entity then provides feedback to the second RLC entity to interrupt processing of duplicate data, preventing buffer overflow while maintaining transmission reliability through coordinated feedback loops between entities
Solution Approach 2:
The patent applies preliminary action by having the first RLC entity detect successful delivery before the second RLC entity completes its processing. This early detection triggers a preemptive interruption signal to stop further processing in the second entity, preventing buffer overflow before it occurs
2Productivity
If duplicate PDCP PDUs are continuously transmitted to multiple RLC entities, then data throughput is improved, but security of data transmission deteriorates due to incomplete processing and buffer overflow
Solution Approach 1:
The feedback mechanism ensures that when the first RLC entity successfully delivers data, it notifies the PDCP entity which then interrupts the second RLC entity. This coordinated feedback maintains data integrity and security by ensuring only properly processed data is transmitted, while still achieving high throughput through efficient duplication
Data Source
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AI summary
Data processing methods and related products are provided. The data processing method includes that: a first device (600), responsive to detecting that a first Radio Link Control (RLC) Protocol Data Unit (PDU) associated with a first RLC Service Data Unit (SDU) and processed by a first RLC-layer entity is completely transmitted, interrupts processing of a second RLC SDU, a data duplication and transmission function of a Packet Data Convergence Protocol (PDCP)-layer entity being in an active state, the first RLC PDU being an RLC PDU in at least one RLC PDU corresponding to the first RLC SDU and the first RLC SDU being the same as the second RLC SDU. According to the embodiments, buffer overflow of a second RLC-layer entity can be avoided and improved security of data transmission can be achieved.