Split-Bearer Quality Reports for Dual Connectivity
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Solution Overview
Problem
Current dual-connectivity systems in wireless communication face challenges in optimizing data distribution between cell groups due to inadequate feedback mechanisms, leading to congestion and latency issues during split-bearer operations.
Innovation Solution
Implementing split-bearer quality reports and PDCP retransmissions across cell groups, allowing UEs to provide direct feedback to hosting base stations about link quality, enabling dynamic adjustment of data distribution and reducing unnecessary data forwarding to underperforming cell groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is distributed to multiple cell groups in dual-connectivity mode, then data delivery capacity is improved, but congestion and latency increase due to inadequate feedback mechanisms
Solution Approach 1:
The patent implements split-bearer quality reports that provide feedback from the UE to the base station about link quality and packet delivery status. This feedback mechanism enables the base station to adjust data distribution dynamically, reducing congestion and latency by steering traffic away from degraded links while maintaining high data delivery capacity through multiple cell groups.
Solution Approach 2:
The patent introduces dynamic adjustment of the data split ratio based on real-time link quality conditions. The base station can modify the distribution ratio between different cell groups according to changing network conditions, allowing the system to adapt to varying traffic patterns and link quality while maintaining optimal data delivery performance.
2Productivity
If split-bearer operation is implemented to utilize multiple cell groups, then data throughput is improved, but data distribution optimization becomes insufficient leading to wasted resources
Solution Approach 1:
The quality report mechanism provides the base station with information about packet delivery status and link quality for each cell group. This feedback enables automated optimization of data distribution without requiring complex manual configuration, allowing the system to automatically identify which cell groups are performing well and steer traffic accordingly, thus optimizing resource utilization while maintaining high throughput.
Solution Approach 2:
The system performs self-optimization by automatically adjusting data distribution based on reported link quality conditions. The base station uses the quality reports to autonomously modify the split ratio and steering decisions, eliminating the need for external intervention or complex optimization algorithms while achieving efficient resource allocation across multiple cell groups.
3Area of stationary object
If data is forwarded to all cell groups regardless of link quality, then coverage is maximized, but unnecessary data forwarding increases latency and consumes resources
Solution Approach 1:
The base station receives quality reports that indicate the actual link quality and packet delivery status for each cell group. Based on this feedback, the base station can identify which cell groups have degraded link conditions and adjust data distribution to exclude those groups from receiving new data, thereby reducing latency and resource consumption while maintaining coverage through the remaining healthy cell groups.
Solution Approach 2:
The system dynamically adjusts the active cell groups for data delivery based on real-time link quality conditions. When a cell group experiences poor link quality, the base station can dynamically reconfigure the data distribution to route traffic through alternative cell groups, maintaining service continuity and reducing latency without sacrificing overall coverage area.
Data Source
AI summary
Apparatuses, systems, and methods for split-bearer enhancements during dual-connectivity operation, e.g., in 5G NR systems and beyond (e.g., NextG, 6G, and so forth). A base station may set up a split-bearer for a UE operating in dual-connectivity and connected to the base station and one or more corresponding base stations, including setting up a ratio of a split of data to be delivered to the UE via the base station and the one or more corresponding base stations. The base station may transmit, based on the ratio of the split, a first portion of the data destined for the UE to the UE and a second portion of the data destined for the UE to the one or more corresponding base stations. The base station may adjust, based on one or more split-bearer quality reports received from the UE, the ratio of the split.