PDCP Multi-Path Routing for Differentiated XR Data Reliability
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Solution Overview
Problem
Existing communication technologies struggle to implement differentiated processing for data packets with varying degrees of importance within the same service flow, particularly in extended reality (XR) services, leading to inefficiencies in transmission reliability and resource utilization.
Innovation Solution
Configuring multiple primary paths for different types of data packets using packet data convergence protocol (PDCP) entities, allowing for differentiated quality of service (QoS) by routing high-importance data through specific paths and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all data packets in the same service flow are transmitted using the same path and processing, then the system operation is simple, but the transmission reliability of high-importance data cannot be improved
Solution Approach 1:
The patent segments data packets into different types (first type and second type) based on their importance, and assigns different transmission paths and processing methods to each type. High-importance data (first type) receives enhanced protection through duplicate transmission, while low-importance data (second type) uses standard single-path transmission, thus improving reliability for critical data without unnecessarily complicating the system for all data
Solution Approach 2:
The patent applies different quality levels of transmission processing to different data packets locally. Specifically, first data packets of the first type are transmitted through multiple paths with duplicate sending, while second data packets of the second type are transmitted through a single path. This localized differentiation ensures high reliability for important data while maintaining simple operation for less critical data
2Reliability
If high-importance data is transmitted with enhanced protection, then the transmission reliability improves, but the resource consumption increases
Solution Approach 1:
The patent segments data packets by importance level and applies differentiated transmission strategies. Only first data packets (high importance) receive enhanced protection through duplicate transmission on multiple paths, while second data packets (low importance) use standard single-path transmission. This segmentation ensures that additional radio resources are consumed only when necessary for high-importance data, avoiding wasteful resource usage for all data packets
3Reliability
If differentiated processing is applied to all data packets, then the transmission reliability of high-importance data improves, but the system complexity increases
Solution Approach 1:
The patent implements differentiated processing locally only for first data packets of the first type, applying enhanced protection mechanisms such as duplicate transmission and multiple path routing. For second data packets of the second type, standard uniform processing is maintained. This local quality approach ensures that the complexity of differentiated processing is introduced only where needed for high-importance data, rather than complicating the entire system uniformly
Data Source
AI summary
A data transmission method, an apparatus, and a system. The data transmission method includes: receiving, from a network device, configuration information for one packet data convergence protocol (PDCP) entity, where the configuration information indicates a plurality of primary paths of a plurality of types of data, and one type of data corresponds to one primary path; and transmitting, based on the configuration information, at least a first data packet on a first primary path, where the first primary path is a primary path that is in the plurality of primary paths and that corresponds to a first type of the first data packet.