PDCP Reordering Time for Split Data Transmission
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Solution Overview
Problem
In data transmission systems using Packet Data Convergence Protocol (PDCP) splitting technology, differences in processing speeds among network elements lead to delays and packet loss due to varying arrival times of split data packets at the terminal.
Innovation Solution
Configuring a PDCP reordering time for terminals and communicating this time between network elements to determine transmission priorities, allowing for timely data packet delivery and reducing congestion by adjusting the quantity of data packets sent based on channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data packets are split and sent through different network elements, then data transmission capacity is improved, but packet loss increases due to varying arrival times
Solution Approach 1:
The patent applies preliminary action by configuring the terminal with a PDCP reordering time parameter before data transmission occurs. This pre-configured time window allows the terminal to buffer and reorder packets arriving at different times, preventing packet loss while maintaining the benefits of split data transmission through multiple network elements.
Solution Approach 2:
The patent implements beforehand cushioning by introducing a time window (PDCP reordering time) that cushions against the variability in packet arrival times. This time buffer absorbs the discrepancies caused by different network element processing speeds, ensuring reliable packet reassembly at the terminal without sacrificing transmission capacity.
2Productivity
If data packets are transmitted at high speed, then transmission efficiency is improved, but channel congestion increases leading to packet loss
Solution Approach 1:
The patent applies feedback mechanisms where network elements monitor channel conditions and adjust transmission parameters accordingly. The PDCP reordering time configuration enables feedback-based flow control, allowing the system to maintain high transmission efficiency while preventing channel congestion by adapting to real-time network conditions.
Data Source
AI summary
The present application discloses a data transmission method, including: configuring, by a first network element, a Packet Data Convergence Protocol (PDCP) reordering time for a terminal; sending, by the first network element, the PDCP reordering time of the terminal to a second network element; sending, by the first network element, a PDCP data packet of the terminal to the second network element, where the PDCP reordering time of the terminal is used to determine a transmission priority of the PDCP data packet of the terminal on the second network element. According to embodiments of the present application, a data packet loss can be reduced.