Split Bearer Data Transfer Path Selection
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Solution Overview
Problem
Current split bearer configurations in wireless communication networks face challenges in reducing latency when the primary path becomes unavailable, especially when the data volume is less than the configured threshold, as they often restrict data transmission to a single path, limiting the benefits of dual-path configurations and failing to efficiently handle temporary path unavailability.
Innovation Solution
A method for user equipment (UE) that supports a split bearer with a primary and secondary path, where PDCP PDUs are submitted to either path based on availability, with the primary path being used if available and the secondary path if not, and optionally submitting to both paths if the primary path is temporarily unavailable, to enhance data transfer efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the primary path is restricted for data transmission when data volume is less than the threshold, then resource usage efficiency is improved, but latency increases when the primary path becomes unavailable
Solution Approach 1:
The patent implements dynamic path selection by monitoring the availability status of the primary path and automatically switching to the secondary path when the primary path becomes unavailable. This dynamic adaptation allows the system to maintain low latency performance by transitioning from a static single-path approach to a flexible multi-path approach based on real-time conditions.
2Loss of energy
If the secondary path is not utilized when data volume is less than the threshold, then resource usage efficiency is improved, but data transfer reliability deteriorates when the primary path is unavailable
Solution Approach 1:
The patent prepares the secondary path in advance as a backup transmission path, keeping it ready for immediate use when the primary path fails. This preliminary preparation of alternative resources ensures that the system can quickly switch to the secondary path without interruption, thereby maintaining data transfer reliability while avoiding continuous resource consumption during normal operation.
3Loss of energy
If dual-path configuration is not utilized for small data volumes, then resource usage efficiency is improved, but the benefit of path diversity is lost
Solution Approach 1:
The patent makes the secondary path multi-functional by using it both as a primary transmission path for large data volumes and as a backup path for small data volumes when the primary path fails. This universal design allows the same resource to serve multiple purposes, providing path diversity benefits without continuously consuming resources, thereby achieving both efficiency and adaptability.
Data Source
AI summary
There is provided an apparatus configured to perform method comprising: supporting a split bearer involving a first entity associated with a primary path of the split bearer and a second entity associated with secondary path of the split bearer, wherein the first entity and the second entity are configured for data transfer; determining a total amount of data volume for the data transfer; if the total amount of data volume for the data transfer is greater than or equal to a threshold value of the split bearer, submitting a Packet Data Convergence Protocol, PDCP, protocol data unit, PDU, to either the first entity or the second entity; if the total amount of data volume for the data transfer is less than the threshold value of the split bearer, submitting the PDCP PDU to the first entity if the primary path is available to use, and submitting the PDCP PDU to the second entity if the primary path is not available to use.