Dynamic Split-Uplink Control for Wireless Resource Availability
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Solution Overview
Problem
In wireless communication systems with dual-connectivity, the use of split-uplink mode by master nodes can lead to air-interface resource limitations for UEs served in single-connection-uplink mode, affecting standalone and non-split-uplink-capable UEs, especially during high uplink loads.
Innovation Solution
An access node dynamically controls the use of split-uplink mode based on the number of UEs that do not support split-uplink mode and those that do, operating in either split-uplink-mode enabled or disabled modes depending on the ratio of these UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If split-uplink mode is enabled for dual-connectivity UEs, then uplink data rate and resource utilization are improved, but air-interface resource availability for non-split-uplink UEs deteriorates
Solution Approach 1:
The access node dynamically adjusts the split-uplink mode configuration based on real-time monitoring of uplink resource utilization and UE distribution. The system transitions between static and dynamic states by enabling or disabling split-uplink mode according to current network conditions, thereby optimizing resource allocation between split-uplink and non-split-uplink UEs while maintaining high uplink data rates when conditions permit
Solution Approach 2:
The system changes the operational parameter of split-uplink mode (enabled/disabled state) based on measured network conditions including uplink resource utilization threshold and ratio of split-uplink-capable UEs. This parameter change allows the system to adapt resource allocation strategies dynamically, ensuring sufficient resources remain available for non-split-uplink UEs while maximizing throughput for capable UEs when resources are abundant
2Adaptability or versatility
If split-uplink mode is enabled to support more UEs, then network capacity and service coverage are improved, but resource allocation complexity increases
Solution Approach 1:
The access node implements a feedback mechanism that continuously monitors uplink resource utilization and UE capability distribution, then uses this feedback to automatically adjust split-uplink mode configuration. This closed-loop control simplifies resource allocation by replacing complex manual configuration with automated decisions based on real-time network state, thereby increasing network capacity without proportionally increasing operational complexity
Solution Approach 2:
The system performs self-configuration by automatically determining whether to enable or disable split-uplink mode based on pre-defined thresholds and current network conditions. This self-service capability eliminates the need for complex external management and manual resource allocation, allowing the network to adaptively scale capacity while keeping operational complexity manageable through autonomous decision-making
Data Source
AI summary
A method and system for controlling application of split-uplink mode in a wireless communication system including an access node. In an example implementation, a method includes determining a first count defining how many user equipment devices (UEs) are connected with the access node and do not support a split-uplink-mode operation in which uplink user-plane data flow is split between air-interface transmission to the access node and air-interface transmission to another access node. Further, the method includes determining a second count defining how many UEs are connected with the access node as part of dual connectivity and support the split-uplink-mode operation. And the method includes, based on the first count and the second count, controlling whether the access node will allow the split-uplink-mode operation, such as whether the access node will allow new activation of the split-uplink-mode operation.