Base Station User Plane Data Priority Processing
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Solution Overview
Problem
The 5G mobile communication network faces challenges in achieving ultra-high speed, large throughput, and ultra-low latency due to high requirements for transmission latency and bandwidth, which affect the efficiency of user plane data processing and transmission in the 4G network architecture, particularly with the use of the CPRI interface.
Innovation Solution
A data transmission method that identifies the priority of user plane data packets and processes them accordingly, with higher priority packets (retransmitted or control type) being preferentially transmitted and buffered separately from lower priority packets (initially transmitted or data type), using a distributed unit in the base station to manage these priorities and optimize transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data packets are transmitted in advance packaging method is introduced, then transmission latency is reduced, but lower layer cannot distinguish and process user plane data, causing low transmission efficiency
Solution Approach 1:
The patent segments user plane data packets into different priority levels (first priority for retransmitted/control packets, second priority for initially transmitted/data packets). This segmentation allows the lower layer to distinguish and process different types of packets efficiently while maintaining the advance packaging method for reduced latency.
Solution Approach 2:
The patent applies different processing qualities to different packets based on their priority. High priority packets receive preferential treatment in buffering and transmission, while low priority packets follow standard processing. This local quality differentiation resolves the contradiction by enabling efficient processing of critical packets without sacrificing the overall advance packaging approach.
2Quantity of substance
If CPRI interface is used for transmitting IQ signal, then bandwidth requirements are met, but transmission latency and bandwidth requirements become excessively high
Solution Approach 1:
The patent implements preliminary action by packaging and transmitting user plane data in advance before scheduling decisions are made. Data packets are prepared and buffered at the lower layer beforehand, eliminating waiting time during scheduling operations. This preliminary action reduces transmission latency while maintaining the bandwidth efficiency of the CPRI interface.
Data Source
AI summary
A data transmission method includes: identifying a priority of a received user plane data packet, and transmitting and processing the received user plane data packet according to the identified priority. Also disclosed is a data transmission device and a base station.