PDCP Layer Data Duplication and Buffer Status Reporting Optimization
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Solution Overview
Problem
Current data processing methods for the Packet Data Convergence Protocol (PDCP) layer in mobile terminals face issues with repeated data transmission and inefficient buffer status reporting, leading to resource wastage due to inconsistent data duplication and reporting across different logical channels.
Innovation Solution
A data processing method that receives indication information for duplicating buffer data in the PDCP layer, performing predetermined processing to transmit duplication data through multiple corresponding transmission paths and accurately reporting data amounts, thereby preventing repeated data transmission and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If PDCP data transmission is performed by using a data transmission scheme in the related art, then data transmission is simplified, but repeated data packets are sent through one transmission path which is inconsistent with the PDCP duplication function requirement
Solution Approach 1:
The patent segments PDCP data into multiple PDCP Protocol Data Units (PDUs) and distributes them across multiple logical channels (LCGs) for parallel transmission. This segmentation allows the system to achieve both simplified operation and reliable duplication by dividing the data stream into manageable units that can be independently transmitted and acknowledged
Solution Approach 2:
The patent introduces a new dimension of control by implementing selective acknowledgment at the PDCP layer based on receiving status from multiple RLC layers. This dimensional addition allows the system to track and acknowledge data reception across multiple transmission paths without complicating the underlying transmission scheme
2Reliability
If PDCP duplication is enabled with multiple logical channels, then data transmission redundancy is improved, but repeated data packets are counted in different logical channels leading to doubling reporting data amount
Solution Approach 1:
The patent merges the acknowledgment and reporting functions at the PDCP layer, consolidating status information from multiple logical channels into a single selective acknowledgment process. This merging prevents duplicate counting of reported data while maintaining the redundancy benefits of multi-channel transmission
Solution Approach 2:
The patent creates a centralized copy of reception status information at the PDCP layer that tracks data receipt across all logical channels. This single source of truth allows the system to generate accurate, non-duplicated reports while maintaining copies of data across multiple transmission paths for redundancy
3Loss of information
If buffer status report BSR is performed with PDCP duplication, then comprehensive buffer status information is obtained, but transmission resources are wasted due to doubled reporting data amount
Solution Approach 1:
The patent extracts the essential buffer status information from multiple logical channels and consolidates it into a single selective acknowledgment message at the PDCP layer. This extraction process removes redundant information while preserving comprehensive buffer status data, thereby reducing transmission resource consumption
Data Source
AI summary
The present disclosure provides a data processing method, a mobile terminal, and a computer-readable storage medium. The method of the present disclosure comprises: receiving indication information, the indication information being used for indicating whether to duplicate cached data in a PDCP layer; and if the indication information indicates duplicating the cached data in the PDCP layer, performing predetermined processing on the cached data in the PDCP layer.